阅读说明：本技术 差压式计量装置、流量计量方法、装置及存储介质 (Differential pressure type metering device, flow metering method, device and storage medium ) 是由 任桂山 秦腾 苏锋 孙凯 李红艳 王存博 方睿 米立飞 于 2018-05-23 设计创作，主要内容包括：本发明公开了一种差压式计量装置、流量计量方法、装置及存储介质,属于工业计量技术领域。该差压式计量装置包括：阀体、闸板、阀杆和止推轴承。本发明实施例中,对于流经该差压式计量装置的流体,在不需要对该流体进行计量时,可以通过阀杆控制闸板向上运动,从而避免流体对闸板的边缘产生磨损。另外,由于闸板的侧面与第三接头的内壁抵接,从而可以对闸板的侧面产生刮除作用。在需要对该流体进行计量时,可以通过阀杆控制闸板向下运动,以通过闸板对流体产生节流作用,进而实现对流体的计量。由于避免了流体对闸板边缘的磨损钝化,以及闸板侧面污垢的累积,提高了对该流体计量的准确性。(The invention discloses a kind of differential pressure type metering device, flow metering method, device and storage mediums, belong to industry measurement technical field.The differential pressure type metering device includes: valve body, flashboard, valve rod and thrust bearing.In the embodiment of the present invention, for flowing through the fluid of the differential pressure type metering device, when not needing to measure the fluid, flashboard can be controlled by valve rod and moved upwards, so that fluid be avoided to generate abrasion to the edge of flashboard.In addition, the side due to flashboard is abutted with the inner wall of third connector, the effect of striking off is generated so as to the side to flashboard.When needing to measure the fluid, flashboard can be controlled by valve rod and moved downward, to generate throttling action to fluid by flashboard, and then realize the metering to fluid.Due to avoiding abrasion passivation and the accumulation of flashboard side dirt of the fluid to flashboard edge, the accuracy to the fluid metering is improved.)

1. a kind of differential pressure type metering device, which is characterized in that the differential pressure type metering device includes: valve body (1), flashboard (2), valve Bar (3) and thrust bearing (4)；

The valve body (1) is in three-port structure, is provided with the first pressure tappings (5), institute on the first connector (11) on the valve body (1) It states and is provided with the second pressure tappings (6) on the second connector (12) of valve body (1), first connector (11) and second connector (12) it is located at same straight line, the third connector (13) of the valve body (1) is fixedly connected with the thrust bearing (4)；

The centerline direction of third connector (13) on the thrust bearing (4) along the valve body (1) is provided with central through hole (41), and the central through hole (41) is connected to the inner cavity of the third connector (13), and one end of the valve rod (3) passes through described Central through hole (41) and the exposed outside in the thrust bearing (4), the valve rod (3) and the thrust bearing (4) sealing connect It connecing, the other end of the valve rod (3) is fixedly connected with the flashboard (2), and the flashboard (2) is located at the inner cavity of the valve body (1), When the valve rod (3) is along the centerline direction movement of the third connector (13), drive the flashboard (2) movement to described the Connection area between one connector (11) and second connector (12) is adjusted, the side of the flashboard (2) and described the The inner wall of three connectors (13) abuts.

2. differential pressure type metering device as described in claim 1, which is characterized in that the differential pressure type metering device further includes electronic Valve (7), the motor-driven valve (7) connect with one end of the outside in the thrust bearing (4) exposed on the valve rod (3), with band The centerline direction that the valve rod (3) is moved along the third connector (13) moves.

3. differential pressure type metering device as claimed in claim 1 or 2, which is characterized in that the differential pressure type metering device further includes Sealing ring (8), the sealing ring (8) are located between the end face and the thrust bearing (4) of the third connector (13).

4. a kind of method for carrying out flow measurement using any differential pressure type metering device of claim 1-3, feature exist In, which comprises

First object pressure and the second goal pressure are obtained, the first object pressure is that target fluid flows through the differential pressure type meter The pressure of the first connector of device is measured, second goal pressure is that the target fluid flows through the differential pressure type metering device The pressure of second connector；

When the difference between the first object pressure and second goal pressure is located at pressure scales, described in determination The practical aperture for the flashboard that differential pressure type metering device includes；

According to the corresponding relationship between the practical aperture of the flashboard and pre-stored flashboard aperture and efflux coefficient, institute is determined State the practical efflux coefficient of flashboard；

Obtain the expansion property coefficient of the target fluid and the caliber of density and Target pipe, the Target pipe for institute State the connection of differential pressure type metering device and the pipeline for conveying the target fluid；

Based on the first object pressure, second goal pressure, the practical aperture of the flashboard and practical efflux coefficient, institute The expansion property coefficient of target fluid and the caliber of density and the Target pipe are stated, determines the flow of the target fluid.

5. method as claimed in claim 4, which is characterized in that described to be based on the first object pressure, second target Pressure, the practical aperture of the flashboard and practical efflux coefficient, the expansion property coefficient of the target fluid and density and described The caliber of Target pipe determines the flow of the target fluid, comprising:

The equivalent opening diameter of reality of the flashboard is determined based on the practical aperture of the flashboard；

Based on the first object pressure, second goal pressure, the equivalent opening diameter of reality of the flashboard and reality stream The caliber of coefficient, the expansion property coefficient of the target fluid and density and the Target pipe out is determined according to the first formula The flow of the target fluid:

First formula are as follows:

Wherein, in first formula, Q_vRefer to that the flow of the target fluid, C refer to the practical outflow system of the flashboard Number, ε refer to that the expansion property coefficient of the target fluid, d refer to that the equivalent opening diameter of the reality of the flashboard, D refer to the mesh The caliber of pipeline is marked, P refers to the first object pressure, and p refers to second goal pressure, and ρ refers to the target fluid Density.

6. method as described in claim 4 or 5, which is characterized in that the practical aperture according to the flashboard and deposit in advance Corresponding relationship between the flashboard aperture and efflux coefficient of storage, before the practical efflux coefficient for determining the flashboard, further includes:

The aperture of the flashboard is divided into N-1 equal part, obtains N number of simulation aperture, the N is the positive integer greater than 1；

For any simulation aperture A in N number of simulation aperture, the corresponding at least one set of simulation of the simulation aperture A is obtained Parameter, every group of analog parameter include simulating flow, the first simulated pressure and the second simulated pressure of fluid, and every group of simulation is joined The flow of the simulation fluid that number includes is different, the first simulated pressure that every group of analog parameter includes be the simulation fluid with The flow that every group of analog parameter includes flows through the pressure of the first connector of the differential pressure type metering device, and every group of analog parameter includes The second simulated pressure be that the simulation fluid with the flow that every group of analog parameter includes flows through the differential pressure type metering device The pressure of second connector；

Based on the simulation aperture A, the expansion property coefficient of the simulation fluid and density, simulate the caliber of pipeline and described The corresponding at least one set of analog parameter of aperture A is simulated, determines the corresponding simulation efflux coefficient of the simulation aperture A, the simulation Pipeline is to connect with the differential pressure type metering device and for conveying the pipeline for simulating fluid；

The simulation aperture A and the corresponding simulation efflux coefficient of the simulation aperture A are stored to the flashboard aperture and outflow In corresponding relationship between coefficient.

7. method as claimed in claim 6, which is characterized in that it is described based on it is described simulation aperture A, it is described simulation fluid it is swollen Swollen property coefficient and density, the caliber of simulation pipeline and the corresponding at least one set of analog parameter of the simulation aperture A, determine institute State the corresponding simulation efflux coefficient of simulation aperture A, comprising:

The analog equivalent opening diameter of the flashboard is determined based on the simulation aperture A；

Any group of analog parameter B at least one set of analog parameter corresponding for the simulation aperture A, based on the flashboard The caliber and the mould of analog equivalent opening diameter, the expansion property coefficient of the simulation fluid and density, the simulation pipeline Flow, the first simulated pressure and the second simulated pressure for the simulation fluid that quasi- parameter B includes, determine institute according to the second formula State the corresponding simulation efflux coefficient of analog parameter B；

Second formula are as follows:

Wherein, in second formula, C_ABRefer to the corresponding simulation efflux coefficient of the analog parameter B, Q_ABRefer to the mould The flow for the simulation fluid that quasi- parameter B includes, d_ARefer to the analog equivalent opening diameter of the flashboard, D_lRefer to the mould The caliber of quasi- pipeline, ε_lRefer to the expansion property coefficient of the simulation fluid, ρ_lRefer to the density of the simulation fluid, P_ABRefer to institute State the first simulated pressure that analog parameter B includes, p_ABRefer to the second simulated pressure that the analog parameter B includes；

Determine the average value of the corresponding simulation efflux coefficient of the corresponding at least one set analog parameter of the simulation aperture A, and The average value is determined as the corresponding simulation efflux coefficient of the simulation aperture A.

8. a kind of device for being carried out flow measurement using any differential pressure type metering device of claim 1-3, feature are existed In described device includes:

First obtains module, and for obtaining first object pressure and the second goal pressure, the first object pressure is target stream Body flows through the pressure of the first connector of the differential pressure type metering device, and second goal pressure flows through institute for the target fluid State the pressure of the second connector of differential pressure type metering device；

First determining module, for being located at number pressure when the difference between the first object pressure and second goal pressure When being worth range, the practical aperture for the flashboard that the differential pressure type metering device includes is determined；

Second determining module, between the practical aperture and pre-stored flashboard aperture and efflux coefficient according to the flashboard Corresponding relationship, determine the practical efflux coefficient of the flashboard；

Second obtains module, for obtaining the expansion property coefficient of the target fluid and the caliber of density and Target pipe, institute Stating Target pipe is the pipeline for connecting with the differential pressure type metering device and be used to convey the target fluid；

Third determining module, for based on the first object pressure, second goal pressure, the practical aperture of the flashboard With the caliber of practical efflux coefficient, the expansion property coefficient of the target fluid and density and the Target pipe, determine described in The flow of target fluid.

9. device as claimed in claim 8, which is characterized in that the third determining module includes:

First determination unit determines the equivalent opening diameter of reality of the flashboard for the practical aperture based on the flashboard；

Second determination unit, for equivalent based on the first object pressure, second goal pressure, the reality of the flashboard The caliber of opening diameter and practical efflux coefficient, the expansion property coefficient of the target fluid and density and the Target pipe, The flow of the target fluid is determined according to the first formula:

First formula are as follows:

Wherein, in first formula, Q_vRefer to that the flow of the target fluid, C refer to the practical outflow system of the flashboard Number, ε refer to that the expansion property coefficient of the target fluid, d refer to that the equivalent opening diameter of the reality of the flashboard, D refer to the mesh The caliber of pipeline is marked, P refers to the first object pressure, and p refers to second goal pressure, and ρ refers to the target fluid Density.

10. a kind of computer readable storage medium, which is characterized in that computer program is stored in the storage medium, it is described Claim 4-7 any method is realized when computer program is executed by processor.

Technical field

The present invention relates to industry measurement technical field, in particular to a kind of differential pressure type metering device, flow metering method, dress It sets and storage medium.

Background technique

In the production process of oil/gas well, for the well yield of clear oil/gas well, differential pressure type metering device is mainly used Carry out one-well metering.Specifically, when fluid flows through differential pressure type metering device, the throttling set that differential pressure type metering device includes can To promote the fluid flowed through to generate pressure difference before and after the throttling set.Later, pressure value before and after the throttling set, stream are obtained The technological parameter of the physical parameter of body, throttling set, and the caliber of pipeline connecting with the differential pressure type metering device, pass through primary Exert the well yield that sharp equation determines oil/gas well.Wherein, the physical parameter of fluid includes expansion property coefficient and density, throttling set Technological parameter include equivalent opening diameter and efflux coefficient.

In the use process of differential pressure type metering device, throttling set mainly includes orifice plate, nozzle and Venturi tube etc..Its In, orifice plate refers to that one piece of sheet metal with through-hole, the equivalent opening diameter of orifice plate refer to the face of the circulation of area and through-hole The equal diameter of a circle of product.Since the differential pressure type metering device of installation abacus has, structure is simple, low cost, and measures essence Higher advantage is spent, is widely used in the Trade Measures field of oil and gas industry.

However, orifice plate is after prolonged use, the through-hole on orifice plate is easy to there is a phenomenon where wearing to be passivated, to make to lead to The circulation area in hole becomes larger, and the equivalent opening diameter in turn resulting in orifice plate changes, and reduces the precision of one-well metering.Separately Outside, due to the easy buildup of debris in the upstream of orifice plate, it is likely that there is a phenomenon where Partial Blockings for the through-hole for causing on orifice plate, to make to lead to The circulation area in hole becomes smaller, and the equivalent opening diameter in turn resulting in orifice plate changes, and reduces the precision of one-well metering.

Summary of the invention

The present invention provides a kind of differential pressure type metering device, flow metering method, device and storage mediums, and list can be improved The precision of well metering, increases the range of flow of one-well metering, the technical solution is as follows:

In a first aspect, provide a kind differential pressure type metering device, the differential pressure type metering device include: valve body, flashboard, Valve rod and thrust bearing；

The valve body is in three-port structure, is provided with the first pressure tappings on the first connector on the valve body, the valve body The second pressure tappings are provided on second connector, first connector and second connector are located at same straight line, the valve body Third connector is fixedly connected with the thrust bearing；

Centerline direction on the thrust bearing along the third connector of the valve body is provided with central through hole, and it is described in Heart through-hole is connected to the inner cavity of the third connector, and one end of the valve rod passes through the central through hole and exposed in the thrust The outside of bearing, the valve rod and the thrust bearing are tightly connected, and the other end of the valve rod is fixedly connected with the flashboard, The flashboard is located at the inner cavity of the valve body, when the valve rod is moved along the centerline direction of the third connector, described in drive Ram movement to be adjusted to the connection area between first connector and second connector, the side of the flashboard with The inner wall of the third connector abuts.

Optionally, the differential pressure type metering device further includes motor-driven valve, exposed in institute on the motor-driven valve and the valve rod One end connection of the outside of thrust bearing is stated, to drive the valve rod to move along the centerline direction of the third connector.

Optionally, the differential pressure type metering device further includes sealing ring, and the sealing ring is located at the end of the third connector Between face and the thrust bearing.

Second aspect is provided a kind of differential pressure type metering device provided using above-mentioned first aspect and carries out flow measurement Method, which comprises

First object pressure and the second goal pressure are obtained, the first object pressure is that target fluid flows through the differential pressure The pressure of first connector of formula metering device, second goal pressure are that the target fluid flows through the differential pressure type metering dress The pressure for the second connector set；

When the difference between the first object pressure and second goal pressure is located at pressure scales, determine The practical aperture for the flashboard that the differential pressure type metering device includes；

According to the corresponding relationship between the practical aperture of the flashboard and pre-stored flashboard aperture and efflux coefficient, really The practical efflux coefficient of the fixed flashboard；

The expansion property coefficient of the target fluid and the caliber of density and Target pipe are obtained, the Target pipe is The pipeline of the target fluid is connect and is used to convey with the differential pressure type metering device；

Based on the first object pressure, second goal pressure, the practical aperture of the flashboard and practical outflow system The expansion property coefficient of several, the described target fluid and the caliber of density and the Target pipe, determine the stream of the target fluid Amount.

Optionally, it is described based on the first object pressure, second goal pressure, the practical aperture of the flashboard and The caliber of practical efflux coefficient, the expansion property coefficient of the target fluid and density and the Target pipe, determines the mesh Mark the flow of fluid, comprising:

The equivalent opening diameter of reality of the flashboard is determined based on the practical aperture of the flashboard；

Based on the first object pressure, second goal pressure, the equivalent opening diameter of reality of the flashboard and reality The caliber of border efflux coefficient, the expansion property coefficient of the target fluid and density and the Target pipe, according to the first formula Determine the flow of the target fluid:

First formula are as follows:

Wherein, in first formula, Q_vRefer to that the flow of the target fluid, C refer to the practical stream of the flashboard Coefficient out, ε refer to that the expansion property coefficient of the target fluid, d refer to that the equivalent opening diameter of the reality of the flashboard, D refer to institute The caliber of Target pipe is stated, P refers to the first object pressure, and p refers to second goal pressure, and ρ refers to the target stream The density of body.

Optionally, between the practical aperture and pre-stored flashboard aperture and efflux coefficient according to the flashboard Corresponding relationship, before the practical efflux coefficient for determining the flashboard, further includes:

The aperture of the flashboard is divided into N-1 equal part, obtains N number of simulation aperture, the N is the positive integer greater than 1；

For any simulation aperture A in N number of simulation aperture, the corresponding at least one set of the simulation aperture A is obtained Analog parameter, every group of analog parameter include simulating flow, the first simulated pressure and the second simulated pressure of fluid, and every group of mould The flow for the simulation fluid that quasi- parameter includes is different, and the first simulated pressure that every group of analog parameter includes is the analog stream Body flows through the pressure of the first connector of the differential pressure type metering device, every group of analog parameter with the flow that every group of analog parameter includes Including the second simulated pressure be that the simulation fluid flows through differential pressure type metering with the flow that every group of analog parameter includes and fills The pressure for the second connector set；

Based on the simulation aperture A, the expansion property coefficient of the simulation fluid and density, the caliber for simulating pipeline, and The corresponding at least one set of analog parameter of the simulation aperture A, determines the corresponding simulation efflux coefficient of the simulation aperture A, described Simulation pipeline is to connect with the differential pressure type metering device and for conveying the pipeline for simulating fluid；

By the simulation aperture A and the corresponding simulation efflux coefficient of the simulation aperture A store to the flashboard aperture with In corresponding relationship between efflux coefficient.

Optionally, described based on the simulation aperture A, the expansion property coefficient of the simulation fluid and density, simulation pipeline Caliber and the corresponding at least one set of analog parameter of the simulation aperture A, determine the corresponding analog stream of the simulation aperture A Coefficient out, comprising:

The analog equivalent opening diameter of the flashboard is determined based on the simulation aperture A；

Any group of analog parameter B at least one set of analog parameter corresponding for the simulation aperture A, is based on the lock The caliber of the analog equivalent opening diameter of plate, the expansion property coefficient of the simulation fluid and density, the simulation pipeline, Yi Jisuo Flow, the first simulated pressure and the second simulated pressure of the simulation fluid that analog parameter B includes are stated, it is true according to the second formula Determine the corresponding simulation efflux coefficient of the analog parameter B；

Second formula are as follows:

Wherein, in second formula, C_ABRefer to the corresponding simulation efflux coefficient of the analog parameter B, Q_ABRefer to institute State the flow for the simulation fluid that analog parameter B includes, d_ARefer to the analog equivalent opening diameter of the flashboard, D_lRefer to institute State the caliber of simulation pipeline, ε_lRefer to the expansion property coefficient of the simulation fluid, ρ_lRefer to the density of the simulation fluid, P_ABIt is Refer to the first simulated pressure that the analog parameter B includes, p_ABRefer to the second simulated pressure that the analog parameter B includes；

Determine being averaged for the simulation corresponding at least one set of corresponding simulation efflux coefficient of analog parameter of aperture A Value, and the average value is determined as the corresponding simulation efflux coefficient of the simulation aperture A.

The third aspect is provided a kind of differential pressure type metering device provided using above-mentioned first aspect and carries out flow measurement Device, described device include:

First obtains module, and for obtaining first object pressure and the second goal pressure, the first object pressure is mesh Mark fluid flows through the pressure of the first connector of the differential pressure type metering device, and second goal pressure is the target fluid stream The pressure of the second connector through the differential pressure type metering device；

First determining module, for being located at pressure when the difference between the first object pressure and second goal pressure When power numberical range, the practical aperture for the flashboard that the differential pressure type metering device includes is determined；

Second determining module, for according to the practical aperture of the flashboard and pre-stored flashboard aperture and efflux coefficient Between corresponding relationship, determine the practical efflux coefficient of the flashboard；

Second obtains module, for obtaining the expansion property coefficient of the target fluid and the pipe of density and Target pipe Diameter, the Target pipe are the pipeline for connecting with the differential pressure type metering device and be used to convey the target fluid；

Third determining module, for based on the first object pressure, second goal pressure, the reality of the flashboard The caliber of aperture and practical efflux coefficient, the expansion property coefficient of the target fluid and density and the Target pipe determines The flow of the target fluid.

Optionally, the third determining module includes:

First determination unit determines that the equivalent aperture of reality of the flashboard is straight for the practical aperture based on the flashboard Diameter；

Second determination unit, for based on the first object pressure, second goal pressure, the reality of the flashboard Equivalent opening diameter and practical efflux coefficient, the expansion property coefficient of the target fluid and density and the Target pipe Caliber determines the flow of the target fluid according to the first formula:

First formula are as follows:

Wherein, in first formula, Q_vRefer to that the flow of the target fluid, C refer to the practical stream of the flashboard Coefficient out, ε refer to that the expansion property coefficient of the target fluid, d refer to that the equivalent opening diameter of the reality of the flashboard, D refer to institute The caliber of Target pipe is stated, P refers to the first object pressure, and p refers to second goal pressure, and ρ refers to the target stream The density of body.

Optionally, described device further include:

Division module obtains N number of simulation aperture, the N is big for the aperture of the flashboard to be divided into N-1 equal part In 1 positive integer；

Third obtains module, for obtaining the simulation and opening for any simulation aperture A in N number of simulation aperture The corresponding at least one set of analog parameter of A is spent, every group of analog parameter includes flow, the first simulated pressure and second for simulating fluid Simulated pressure, and the flow of every group of analog parameter simulation fluid for including is different, the first mould that every group of analog parameter includes Pseudopressure is the first connector that the simulation fluid flows through the differential pressure type metering device with the flow that every group of analog parameter includes Pressure, the second simulated pressure that every group of analog parameter includes is the simulation fluid traffic flow that includes with every group of analog parameter The pressure of the second connector through the differential pressure type metering device；

4th determining module, for expansion property coefficient and density, mould based on the simulation aperture A, the simulation fluid The corresponding at least one set of analog parameter of the caliber and the simulation aperture A of quasi- pipeline, determines that the simulation aperture A is corresponding Efflux coefficient is simulated, the simulation pipeline is to connect with the differential pressure type metering device and for conveying the pipe for simulating fluid Road；

Memory module, for storing the simulation aperture A and the corresponding simulation efflux coefficient of the simulation aperture A to institute It states in the corresponding relationship between flashboard aperture and efflux coefficient.

Optionally, the 4th determining module includes:

Third determination unit, for determining the analog equivalent opening diameter of the flashboard based on the simulation aperture A；

4th determination unit, for any group of mould at least one set of analog parameter corresponding for the simulation aperture A Quasi- parameter B, the expansion property coefficient and density, the mould of analog equivalent opening diameter, the simulation fluid based on the flashboard Flow, the first simulated pressure and the second simulation for the simulation fluid that the caliber and the analog parameter B of quasi- pipeline include Pressure determines the corresponding simulation efflux coefficient of the analog parameter B according to the second formula；

Second formula are as follows:

Wherein, in second formula, C_ABRefer to the corresponding simulation efflux coefficient of the analog parameter B, Q_ABRefer to institute State the flow for the simulation fluid that analog parameter B includes, d_ARefer to the analog equivalent opening diameter of the flashboard, D_lRefer to institute State the caliber of simulation pipeline, ε_lRefer to the expansion property coefficient of the simulation fluid, ρ_lRefer to the density of the simulation fluid, P_ABIt is Refer to the first simulated pressure that the analog parameter B includes, p_ABRefer to the second simulated pressure that the analog parameter B includes；

5th determination unit, for determining the corresponding mould of the corresponding at least one set analog parameter of the simulation aperture A The average value of quasi- efflux coefficient, and the average value is determined as the corresponding simulation efflux coefficient of the simulation aperture A.

Fourth aspect provides a kind of computer readable storage medium, is stored with computer program in the storage medium, The computer program realizes any method that above-mentioned second aspect provides when being executed by processor.

Technical solution bring beneficial effect provided by the invention at least may include:

In the embodiment of the present invention, for flowing through the fluid of the differential pressure type metering device, do not needing to count the fluid When amount, flashboard can be controlled by valve rod and be moved upwards along the centerline direction of third connector, to guarantee the lower end surface of flashboard not Choked flow effect can be generated to fluid, so that the edge abrasion for avoiding fluid from leading to flashboard is passivated.In addition, being moved upwards in flashboard When, since the side of flashboard is abutted with the inner wall of third connector, the effect of striking off is generated so as to the side to flashboard, to remove The dirt of flashboard side.When needing to measure the fluid, flashboard can be controlled by valve rod along the center of third connector Line direction moves downward, to generate throttling action to fluid by flashboard, to realize the metering to fluid.Due to avoiding stream Body is passivated the abrasion at flashboard edge, and avoids the accumulation of flashboard side dirt, improves the accuracy of fluid metering.Separately Outside, since the connection area between the first connector and the second connector can be adjusted by flashboard, it that is to say, lock can be passed through Plate adjusts the area of passage for flowing through the differential pressure type metering device, to improve the measures range of fluid.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is a kind of structural schematic diagram of differential pressure type metering device provided in an embodiment of the present invention；

Fig. 2 is a kind of knot of the differential pressure type metering device of connection upstream line and downstream line provided in an embodiment of the present invention Structure schematic diagram；

Fig. 3 is a kind of structural schematic diagram of differential pressure type metering device provided in an embodiment of the present invention；

Fig. 4 is a kind of flow diagram of flow metering method provided in an embodiment of the present invention；

Fig. 5 is the process of the corresponding relationship between a kind of determining flashboard aperture provided in an embodiment of the present invention and efflux coefficient Schematic diagram；

Fig. 6 is a kind of structural representation of the connection area between first connector and the second connector provided in an embodiment of the present invention Figure；

Fig. 7 is a kind of structural schematic diagram of flow measurement device provided in an embodiment of the present invention；

Fig. 8 is a kind of structural schematic diagram of flow measurement device provided in an embodiment of the present invention；

Fig. 9 is a kind of structural schematic diagram of flow measurement device provided in an embodiment of the present invention；

Figure 10 is a kind of structural schematic diagram of flow measurement device provided in an embodiment of the present invention；

Figure 11 shows the structural schematic diagram of the terminal of an illustrative embodiment of the invention offer.

Appended drawing reference:

1: valve body；2: flashboard；3: valve rod；4: thrust bearing；5: the first pressure tappings；6: the second pressure tappings；7: motor-driven valve；8: Sealing ring；

11: the first connectors；12: the second connectors；13: third connector；41: central through hole.

Specific embodiment

To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.

Fig. 1 is a kind of structural schematic diagram of differential pressure type metering device provided in an embodiment of the present invention.Referring to Fig. 1, the differential pressure Formula metering device includes: valve body 1, flashboard 2, valve rod 3 and thrust bearing 4.Valve body 1 is in three-port structure, the first connector on valve body 1 It is provided with the first pressure tappings 5 on 11, the second pressure tappings 6 are provided on the second connector 12 of valve body 1, the first connector 11 and second connect First 12 are located at same straight line, and the third connector 13 of valve body 1 is fixedly connected with thrust bearing 4, along the of valve body 1 on thrust bearing 4 The centerline direction of three connectors 13 is provided with central through hole 41, and central through hole 41 is connected to the inner cavity of third connector 13, valve rod 3 One end pass through central through hole 41 and the exposed outside in thrust bearing 4, valve rod 3 and thrust bearing 4 are tightly connected, valve rod 3 The other end is fixedly connected with flashboard 2, and flashboard 2 is located at the inner cavity of valve body 1, and valve rod 3 is moved along the centerline direction of third connector 13 When, drive the movement of flashboard 2 to be adjusted to the connection area between the first connector 11 and the second connector 12, the side of flashboard 2 It is abutted with the inner wall of third connector 13.

Wherein, the first pressure tappings 5 are for installing the first pressure obtaning device, to obtain when fluid flows through the differential pressure type metering device The pressure at the first connector 11 is taken, the second pressure tappings 6 are for installing the second pressure obtaning device, to flow through differential pressure type metering in fluid The pressure at the second connector 12 is obtained when device.Certainly, pressure difference can also be installed between the first pressure tappings 5 and the second pressure tappings 6 Device, to directly acquire the pressure at the first connector 11 and the difference between the pressure at the second connector 12 by the Differential Pressure Unit Value.Wherein, the first pressure obtaning device and the second pressure obtaning device all can be pressure gauges, or pressure sensor.Differential Pressure Unit It can be differential pressure pickup etc..

The center line of straight line and third connector 13 where first connector 11 and the second connector 12 can be mutually perpendicular to, when So, the angle between the straight line at 12 place of the first connector 11 and the second connector and the center line of third connector 13 can also be located at angle Numberical range is spent, which may range from more than or equal to 75 degree and less than 90 degree, as long as valve rod 3 is along third connector 13 Centerline direction movement when, flashboard 2 can be driven to adjust the connection area between the first connector 11 and the second connector 12 Whole, it is not limited in the embodiment of the present invention.

It should be noted that can pass through when valve rod 3 drives flashboard 2 to move along the centerline direction of third connector 13 The end face connecting on thrust bearing 4 with valve body 1 limits flashboard 2, and the upper end of the lower end surface of thrust bearing 4 and flashboard 2 When face contact, the connection area between the first connector 11 and the second connector 12 is maximum, that is to say, the edge of flashboard 2 will not convection current Fluid through the differential pressure type metering device generates blocking circuit phenomenon.The lower end surface of thrust bearing 4 refers to the end face connecting with valve body 1, The upper surface of flashboard 2 refers to the end face connecting with valve rod 3.

For flowing through the fluid of the differential pressure type metering device, referring to fig. 2, the first connector 11 of the differential pressure type metering device can To be tightly connected with upstream line, the second connector 12 can be tightly connected with downstream line, not need to measure fluid When, the upper surface of flashboard 2 can be with the lower end face contact of thrust bearing 4, so that flashboard 2 be avoided to generate blocking circuit phenomenon to fluid. This way it is possible to avoid to the edge of flashboard 2 abrasion passivation occurs for fluid, and then guarantee that the equivalent opening diameter of flashboard 2 will not be sent out Changing, to guarantee the accuracy of fluid metering.Wherein, between the first connector 11 and upstream line, the second connector 12 is under It can be connected and sealed using stud between play pipe road.The equivalent opening diameter of flashboard 2 refers to flashboard 2 certain When aperture, the diameter of a circle of the connection area equation between area and the first connector 11 and the second connector 12.

When needing to measure fluid, it is downward along the center line of third connector 13 flashboard 2 can be controlled by valve rod 3 Movement, to generate throttling action to fluid, to guarantee that the pressure at the first connector 11 is different from the pressure at the second connector 12. Since the pressure at the first connector 11 is different from the difference between the pressure at the second connector 12, the result that may cause metering is deposited It, therefore, can be in the pressure at the first connector 11 and the pressure at the second connector 12 in order to improve the accuracy of metering in deviation Between difference when meeting pressure scales, realize the metering to fluid.Wherein, pressure scales can be to be greater than or wait In 1 kPa and less than or equal to 40 kPas, certainly, pressure scales are also possible to other numberical ranges.

It should be noted that since flashboard 2 can be controlled by valve rod 3, with to the first connector 11 and the second connector 12 it Between connection area be adjusted, that is to say, the aperture of flashboard 2 is adjustable.It, can be in this way, when the flow of fluid is smaller Reduce the aperture of flashboard 2, so that the difference between the pressure at the pressure and the second connector 12 at the first connector 11 meets pressure Numberical range；Alternatively, the aperture of flashboard 2 can be increased when the flow of fluid is larger so that the pressure at the first connector 11 with The difference between pressure at second connector 12 meets pressure scales, and then increases the differential pressure type metering device fluid Measures range.

In addition, flashboard 2 can be controlled by valve rod 3 along the center line of third connector 13 after completing to the metering of fluid It moves upwards, to guarantee the lower end surface of thrust bearing 4 and the upper end face contact of flashboard 2.During flashboard 2 moves upwards, Since the side of flashboard 2 is abutted with the inner wall of third connector 13, it can be by the inner wall of third connector 13 to flashboard 2 Side generates the effect of striking off, and to remove the dirt of the side accumulation of flashboard 2, dirt is avoided to produce the equivalent opening diameter of flashboard 2 It is raw to influence, to guarantee the accuracy of follow-up measurement.

For the fluid with certain flow, when being measured by differential pressure type metering device in the prior art, such as The flow of fruit fluid is smaller, and the pressure difference before and after the device that causes to throttle is when being insufficient for pressure scales, then cannot achieve pair The metering of fluid.And in differential pressure type metering device provided in an embodiment of the present invention, can by adjusting the aperture of flashboard 2, thus Guarantee that the pressure difference before and after throttling device meets pressure scales, and then realizes the metering to fluid.

Referring to Fig. 3, when being moved by the control flashboard 2 of valve rod 3 along the centerline direction of third connector 13, for the ease of behaviour Make the operation of personnel, reduces the operating time, improve the measurement efficiency of fluid, which can also include motor-driven valve 7.Motor-driven valve 7 is connect with one end of the outside in thrust bearing 4 exposed on valve rod 3, in this way, needing to control lock by valve rod 3 Plate 2 move when, can the centerline direction by motor-driven valve 7 with ovable valve stem 3 along third connector 13 move, and then drive flashboard 2 Centerline direction along third connector 13 moves.

It should be noted that when fluid flows through the differential pressure type metering device, in order to avoid fluid leaks, referring to figure 3, the differential pressure type metering device can also include sealing ring 8, sealing ring 8 be located at third connector 13 end face and thrust bearing 4 it Between.In this way, when thrust bearing 4 is fixed on third connector 13 by bolt extruding can be generated to sealing ring 8, with reality Sealing between the lower end surface of existing thrust bearing 4 and the end face of third connector 13.

In the embodiment of the present invention, for flowing through the fluid of the differential pressure type metering device, do not needing to count the fluid When amount, flashboard can be controlled by valve rod and be moved upwards along the centerline direction of third connector, to guarantee the lower end surface of flashboard not Choked flow effect can be generated to fluid, so that the edge abrasion for avoiding fluid from leading to flashboard is passivated.In addition, being moved upwards in flashboard When, since the side of flashboard is abutted with the inner wall of third connector, the effect of striking off is generated so as to the side to flashboard, to remove The dirt of flashboard side.When needing to measure the fluid, flashboard can be controlled by valve rod along the center of third connector Line direction moves downward, to generate throttling action, and the pressure and second obtained in the first pressure obtaning device to fluid by flashboard When the difference between pressure that device obtains meets pressure difference value range, the metering to fluid is realized.Due to not needing to measure When, it avoids fluid and the abrasion at flashboard edge is passivated, it is thus also avoided that the accumulation of flashboard side dirt improves fluid metering Accuracy.In addition, that is to say since the connection area between the first connector and the second connector can be adjusted by flashboard, The area of passage for flowing through the differential pressure type metering device can be adjusted by flashboard, to improve the measures range of fluid.

Fig. 4 is that a kind of differential pressure type metering device provided using above-mentioned first embodiment provided in an embodiment of the present invention is carried out The flow diagram of the method for flow measurement.Referring to fig. 4, this method comprises the following steps.

Step 401: obtaining first object pressure and the second goal pressure.

Wherein, first object pressure be target fluid flow through the differential pressure type metering device the first connector pressure, second Goal pressure is the pressure for the second connector that target fluid flows through the differential pressure type metering device

It, can be by this when flowing through the differential pressure type metering device in target fluid, and needing to measure target fluid The valve rod control flashboard of differential pressure type metering device moves downward, to generate throttling action to target fluid, to promote target stream Pressure of the body before flashboard is different from the pressure after flashboard.At this moment, it in order to realize the metering to target fluid, can obtain respectively Take the second goal pressure of the first object pressure and the second joint that flow through the first joint of the differential pressure type metering device.

Step 402: when the difference between first object pressure and the second goal pressure is located at pressure scales, determining The practical aperture for the flashboard that the differential pressure type metering device includes.

Before flashboard moves downward, first object pressure is equal with the second goal pressure, that is to say first object pressure Difference between the second goal pressure is 0, with the movement that flashboard is downward, between first object pressure and the second goal pressure Difference will be slow increase.For the target fluid with certain flow, in order to avoid first object pressure and the second target pressure Difference between power is smaller, the inaccuracy for causing target fluid to measure, can be to the of acquisition while flashboard moves downward Difference between one goal pressure and the second goal pressure carries out real-time judge.When first object pressure and the second goal pressure it Between difference so that flashboard is maintained at current location when meeting pressure scales, and determine reality of the flashboard at current location Aperture.

Wherein, pressure scales can be configured in advance by operator, pressure scales can be greater than or Equal to 1 kPa and it is less than or equal to 40 kPas, certainly, pressure scales can also be other ranges, the embodiment of the present invention pair This is without limitation.The practical aperture of gate refers to the center line downwardly direction for the valve rod for including along the differential pressure type metering device On, the maximum distance between the inner surface for the valve body that the lower end surface of gate and the differential pressure type metering device include.

Step 403: according to the corresponding pass between the practical aperture of flashboard and pre-stored flashboard aperture and efflux coefficient System, determines the practical efflux coefficient of the flashboard.

Due to flashboard aperture difference when, connected surface between the first connector and the second connector of the differential pressure type metering device Product is different, and then causes the efflux coefficient of flashboard different, and therefore, different flashboard apertures corresponds to different efflux coefficients.True After the practical aperture for having determined current time flashboard, in order to realize the metering to target fluid, it can be opened from pre-stored flashboard Degree determines the corresponding efflux coefficient of practical aperture of flashboard, and the efflux coefficient is determining with the corresponding relationship of efflux coefficient For the practical efflux coefficient of flashboard.

It further,, can also be as follows referring to Fig. 5 before determining the practical efflux coefficient of the flashboard 4031- step 4034 determines the corresponding relationship between flashboard aperture and efflux coefficient.

Step 4031: the aperture of flashboard being divided into N-1 equal part, obtains N number of simulation aperture.

When being measured by the differential pressure type metering device to target flow, the flashboard of the differential pressure type metering device may It can be in advance to flashboard in order to determine the practical efflux coefficient of flashboard flashboard in any opening degree in any opening degree Aperture divided.

Wherein, N is the positive integer greater than 1, the aperture of flashboard can be evenly dividing to obtain N number of simulation aperture, In one possible implementation, flashboard aperture can be divided into 0.1D_l、0.2D_l、0.3D_l、0.4D_l、0.5D_l、0.6D_l、 0.7D_l、0.8D_lAnd 0.9D_l, obtain 9 simulation apertures.Wherein, D_lRefer to and is connect with the differential pressure type metering device and for conveying Simulate the caliber of fluid.It is of course also possible to which the aperture of gate valve is carried out any division, it is not limited in the embodiment of the present invention.

Step 4032: for any simulation aperture A in N number of simulation aperture, obtaining the corresponding at least one set of simulation aperture A Analog parameter, every group of analog parameter include simulating flow, the first simulated pressure and the second simulated pressure of fluid, and every group of mould The flow for the simulation fluid that quasi- parameter includes is different.

Specifically, for any simulation aperture A in N number of simulation aperture, differential pressure type metering dress is flowed through in simulation fluid When setting, the aperture of flashboard is adjusted to simulation aperture A.Later, simulation fluid is flowed separately through down to a few different flow The differential pressure type metering device obtains the first mould that simulation fluid flows through the differential pressure type metering device for each different flow Pseudopressure and the second simulated pressure, and by each different flow, and the first simulation obtained in each different flow Pressure and the second simulated pressure are determined as one group of analog parameter, to obtain the corresponding at least one set of analog parameter of simulation aperture A.

Wherein, the first simulated pressure that every group of analog parameter includes is the flow simulated fluid and include with every group of analog parameter The pressure of the first connector of the differential pressure type metering device is flowed through, the second simulated pressure that every group of analog parameter includes is simulation fluid The pressure of the second connector of the differential pressure type metering device is flowed through with the flow that every group of analog parameter includes.

Continue the example above, when simulation aperture A is 0.1D_lWhen, the gate valve of the differential pressure type metering device is adjusted to 0.1D_l Aperture.Later, simulation fluid is made to flow through the differential pressure type metering device respectively with first flow, second flow and third flow, And when the flow for simulating fluid is first flow, corresponding first simulated pressure of first flow and the second simulated pressure are obtained, And corresponding first simulated pressure of first flow and first flow and the second simulated pressure are determined as first group of simulation ginseng Number；When the flow for simulating fluid is second flow, corresponding first simulated pressure of second flow and the second simulated pressure are obtained, And corresponding first simulated pressure of second flow and second flow and the second simulated pressure are determined as second group of simulation ginseng Number；When the flow for simulating fluid is third flow, corresponding first simulated pressure of third flow and the second simulated pressure are obtained, And third flow and corresponding first simulated pressure of third flow and the second simulated pressure are determined as third group simulation ginseng Number, and then obtain 0.1D_lCorresponding three groups of analog parameters.

Step 4033: based on simulation aperture A, the expansion property coefficient of simulation fluid and density, the caliber for simulating pipeline, and The corresponding at least one set of analog parameter of aperture A is simulated, determines the corresponding simulation efflux coefficient of simulation aperture A.

Wherein, simulation pipeline is to connect with the differential pressure type metering device and for conveying the pipeline for simulating fluid.Due to mould When pressure locating for fluid analogy and/or temperature change very little, the variable quantity of the expansion property coefficient and density of simulating fluid can be neglected Slightly disregard, that is to say, the expansion property coefficient and density for simulating fluid all can be constants.In addition, due to the caliber for simulating pipeline Also it is constant, therefore, before determining the corresponding simulation efflux coefficient of simulation aperture A, can obtains in advance and store analog stream The expansion property coefficient and density of body, and the caliber of simulation pipeline.Certainly, at least one set of simulation corresponding for simulation aperture A Every group of analog parameter in parameter can also obtain the pressure and temperature of simulation fluid in real time, and then determine the swollen of simulation fluid Swollen property coefficient and density.In one possible implementation, the pressure that simulation fluid can be obtained by pressure sensor, leads to Excess temperature transmitter obtain simulation fluid temperature, and then can by the prior art determine simulation fluid expansion property coefficient and Density.

Specifically, for simulating aperture A, (1)-(3) the corresponding analog stream of simulation aperture A can be determined in accordance with the following steps Coefficient out.

(1), the analog equivalent opening diameter of the flashboard is determined based on simulation aperture A.

Since the equivalent opening diameter of flashboard refers between the first connector and the second connector of the differential pressure type metering device Connection area equation diameter of a circle.Therefore, for any simulation aperture A in N number of simulation aperture, aperture is simulated determining When the analog equivalent opening diameter of A, the connection area between the first connector and the second connector can be first determined, and then pass through circle Area formula determines the equivalent diameter of the connection area, and the analog equivalent aperture that the equivalent diameter is determined as the flashboard is straight Diameter.

For example, along the conveying direction of simulation fluid, referring to Fig. 6, when the simulation aperture A of flashboard is 0.1D_lWhen, the first connector Connection area between the second connector is the difference between the area of sector OAB and the area of triangle OAB, be that is to say 0.037D_l ².Later, it can determine that the analog equivalent opening diameter of flashboard is approximately 0.21D according to round area formula_l。

(2), any group of analog parameter B at least one set of analog parameter corresponding for simulation aperture A, is based on the flashboard Analog equivalent opening diameter, simulation fluid expansion property coefficient and density, simulate pipeline caliber and analog parameter B packet Flow, the first simulated pressure and the second simulated pressure of the simulation fluid included determine analog parameter B corresponding simulation outflow system Number.

Specifically, the analog equivalent opening diameter based on flashboard, the simulation expansion property coefficient of fluid that is previously stored and close Flow, the first simulated pressure and the second simulation pressure for the simulation fluid that degree, the caliber of simulation pipeline and analog parameter B include Power determines the corresponding simulation efflux coefficient of analog parameter B according to following second formula.

Second formula are as follows:

Wherein, in the second formula, C_ABRefer to the corresponding simulation efflux coefficient of analog parameter B, Q_ABRefer to analog parameter B Including simulation fluid flow, d_ARefer to the analog equivalent opening diameter of the flashboard, D_lRefer to the caliber of simulation pipeline, ε_lIt is Refer to the expansion property coefficient of the simulation fluid, ρ_lRefer to the density of simulation fluid, P_ABRefer to the first simulation pressure that analog parameter B includes Power, p_ABRefer to the second simulated pressure that analog parameter B includes.

(3), being averaged for the simulation corresponding at least one set of corresponding simulation efflux coefficient of analog parameter of aperture A is determined Value, and the average value is determined as to simulate the corresponding simulation efflux coefficient of aperture A.

Specifically, the corresponding simulation efflux coefficient of at least one set of analog parameter corresponding to simulation aperture A is asked With, obtain simulation efflux coefficient summation, by the simulation efflux coefficient summation with simulate the corresponding analog parameter of aperture A group number it Between ratio be determined as simulating the corresponding simulation efflux coefficient of aperture A.

Continue the example above, simulation aperture A respectively corresponds first group of analog parameter, second group of analog parameter and third group mould Quasi- parameter, by the corresponding simulation efflux coefficient of first group of analog parameter, the corresponding simulation efflux coefficient of second group of analog parameter and The corresponding simulation efflux coefficient of third group analog parameter carries out addition summation, obtains simulation efflux coefficient summation, and then by the mould Intend efflux coefficient summation divided by 3, obtain the average value, which is determined as to simulate the corresponding simulation efflux coefficient of aperture A.

When simulation aperture A is 0.1D_lWhen, determining simulation efflux coefficient is a1, when simulation aperture A is 0.2D_lWhen, it determines Simulation efflux coefficient be a2, when simulation aperture A be 0.3D_lWhen, determining simulation efflux coefficient is a3, when simulation aperture A is 0.4D_lWhen, determining simulation efflux coefficient is a4, when simulation aperture A is 0.5D_lWhen, determining simulation efflux coefficient is a5, when Simulation aperture A is 0.6D_lWhen, determining simulation efflux coefficient is a6, when simulation aperture A is 0.7D_lWhen, determining simulation outflow Coefficient is a7, when simulation aperture A is 0.8D_lWhen, determining simulation efflux coefficient is a8, when simulation aperture A is 0.9D_lWhen, it determines Simulation efflux coefficient be a9.

Step 4034: simulation aperture A and the corresponding simulation efflux coefficient of simulation aperture A are stored to flashboard aperture and outflow In corresponding relationship between coefficient.

Aperture A, and the corresponding simulation efflux coefficient of simulation aperture A that (1)-(3) determine through the above steps will be simulated It stores into the corresponding relationship between flashboard aperture as shown in Table 1 and efflux coefficient.

Table 1

Flashboard aperture	Efflux coefficient
		0.1Dl	a1
0.2Dl	a2
		0.3Dl	a3
0.4Dl	a4
		0.5Dl	a5
0.6Dl	a6
		0.7Dl	a7
0.8Dl	a8
		0.9Dl	a9

Step 404: obtaining the expansion property coefficient of target fluid and the caliber of density and Target pipe.

Wherein, Target pipe is the pipeline for connecting with the differential pressure type metering device and be used to convey target fluid.

When the pressure as locating for target fluid and/or temperature change very little, the expansion property coefficient and density of target fluid Variable quantity can be ignored, that is to say, the expansion property coefficient and density of target fluid all can be constants.In addition, due to The caliber of Target pipe is also constant, therefore, when measuring to target fluid, can obtain the expansion of target fluid in advance The caliber of property coefficient and density and Target pipe.Certainly, in order to improve the precision of metering, target stream can also be obtained in real time Body pressure and temperature, and then determine based on the pressure and temperature of acquisition the expansion property coefficient and density of target fluid.

In one possible implementation, the pressure that simulation fluid can be obtained by pressure sensor, passes through temperature Transmitter obtains the temperature of simulation fluid, and then the expansion property coefficient and density of simulation fluid can be determined by the prior art.

Step 405: based on first object pressure, the second goal pressure, the practical aperture of the flashboard and practical efflux coefficient, The expansion property coefficient and density of target fluid and the caliber of Target pipe, determine the flow of the target fluid.

Specifically, the equivalent opening diameter of reality of the flashboard is determined based on the practical aperture of the flashboard, is based on first object Pressure, the second goal pressure, the equivalent opening diameter of the reality of the flashboard and practical efflux coefficient, target fluid expansion property coefficient And the caliber of density and Target pipe, it determines the flow of target fluid, realizes the metering to target fluid.

Wherein, the equivalent opening diameter of reality of flashboard is determined based on the practical aperture of flashboard, it can be such as above-mentioned determining flashboard Analog equivalent opening diameter described in, details are not described herein for the embodiment of the present invention.

Wherein, based on first object pressure, the second goal pressure, the equivalent opening diameter of the reality of the flashboard and practical outflow The caliber of coefficient, the expansion property coefficient of target fluid and density and Target pipe determines target stream according to following first formula The flow of body.

First formula are as follows:

Wherein, in the first formula, Q_vRefer to that the flow of target fluid, C refer to that the practical efflux coefficient of the flashboard, ε are Refer to that the expansion property coefficient of target fluid, d refer to that the equivalent opening diameter of the reality of the flashboard, D refer to that the caliber of Target pipe, P are Refer to first object pressure, p refers to the second goal pressure, and ρ refers to the density of target fluid.

In the embodiment of the present invention, for flowing through the target fluid of the differential pressure type metering device, need to target fluid into When row metering, flashboard can be controlled by valve rod and be moved downward along the centerline direction of third connector, to pass through flashboard to target Fluid generates throttling action, and obtains the differential pressure type metering device in real time and connect in the first object pressure of the first joint and second The second goal pressure at head.It, can be in first object pressure and the second target in order to improve the metering accuracy of target fluid When difference between pressure meets pressure difference value range, target fluid is measured.When first object pressure and the second target When difference between pressure meets pressure difference value range, first object pressure and the second goal pressure are obtained, and obtain the differential pressure Practical aperture of the flashboard of formula metering device at current time determines in the corresponding relationship between flashboard aperture and efflux coefficient The corresponding practical efflux coefficient of the practical aperture of flashboard.Later, the expansion property coefficient and density and target tube of target fluid are obtained The caliber in road, and then based on first object pressure, the second goal pressure, the practical aperture of the flashboard and practical efflux coefficient, mesh The expansion property coefficient of fluid and the caliber of density and Target pipe are marked, determines the flow of target fluid, is realized to target fluid Metering.

Fig. 7 is that a kind of differential pressure type metering device provided using above-mentioned first embodiment provided in an embodiment of the present invention is carried out The structural schematic diagram of the device of flow measurement.Referring to Fig. 7, which includes:

First obtains module 701, and for obtaining first object pressure and the second goal pressure, first object pressure is target Fluid flows through the pressure of the first connector of the differential pressure type metering device, and the second goal pressure is that target fluid flows through the differential pressure type meter Measure the pressure of the second connector of device；

First determining module 702, for being located at number pressure when the difference between first object pressure and the second goal pressure When being worth range, the practical aperture for the flashboard that the differential pressure type metering device includes is determined；

Second determining module 703, for being according to the practical aperture of the flashboard and pre-stored flashboard aperture and outflow Corresponding relationship between number determines the practical efflux coefficient of the flashboard；

Second obtains module 704, for obtaining the expansion property coefficient of target fluid and the pipe of density and Target pipe Diameter, Target pipe are the pipeline for connecting with the differential pressure type metering device and be used to convey target fluid；

Third determining module 705, for based on first object pressure, the second goal pressure, the practical aperture of the flashboard and The caliber of practical efflux coefficient, the expansion property coefficient of target fluid and density and Target pipe, determines the stream of target fluid Amount.

Optionally, referring to Fig. 8, third determining module 705 includes:

First determination unit 7051 determines that the equivalent aperture of reality of the flashboard is straight for the practical aperture based on the flashboard Diameter；

Second determination unit 7052, for based on first object pressure, the second goal pressure, the reality of the flashboard is equivalent opens The caliber of bore dia and practical efflux coefficient, the expansion property coefficient of target fluid and density and Target pipe, according to the first public affairs Formula determines the flow of target fluid:

First formula are as follows:

Wherein, in the first formula, Q_vRefer to that the flow of target fluid, C refer to that the practical efflux coefficient of the flashboard, ε are Refer to that the expansion property coefficient of target fluid, d refer to that the equivalent opening diameter of the reality of the flashboard, D refer to that the caliber of Target pipe, P are Refer to first object pressure, p refers to the second goal pressure, and ρ refers to the density of target fluid.

Optionally, referring to Fig. 9, the device further include:

Division module 706 obtains N number of simulation aperture, N is greater than 1 for the aperture of the flashboard to be divided into N-1 equal part Positive integer；

Third obtains module 707, for obtaining A pairs of aperture of simulation for any simulation aperture A in N number of simulation aperture At least one set of analog parameter answered, every group of analog parameter include the flow for simulating fluid, the first simulated pressure and the second simulation Pressure, and the flow for simulating fluid that every group of analog parameter includes is different, the first simulated pressure that every group of analog parameter includes is Simulation fluid flows through the pressure of the first connector of the differential pressure type metering device, every group of simulation with the flow that every group of analog parameter includes The second simulated pressure that parameter includes is to simulate fluid to flow through the differential pressure type metering device with the flow that every group of analog parameter includes The second connector pressure；

4th determining module 708, for based on simulation aperture A, the expansion property coefficient for simulating fluid and density, simulation pipeline Caliber, and the corresponding at least one set of analog parameter of simulation aperture A determines the corresponding simulation efflux coefficient of simulation aperture A, mould Quasi- pipeline is to connect with the differential pressure type metering device and for conveying the pipeline for simulating fluid；

Memory module 709 is stored for that will simulate aperture A simulation efflux coefficient corresponding with simulation aperture A to the flashboard In corresponding relationship between aperture and efflux coefficient.

Optionally, referring to Figure 10, the 4th determining module 708 includes:

Third determination unit 7081, for determining the analog equivalent opening diameter of the flashboard based on simulation aperture A；

4th determination unit 7082, for any group of mould at least one set of analog parameter corresponding for simulation aperture A Quasi- parameter B, the expansion property coefficient and density, the pipe for simulating pipeline of analog equivalent opening diameter, simulation fluid based on the flashboard Flow, the first simulated pressure and the second simulated pressure for the simulation fluid that diameter and analog parameter B include, according to the second formula Determine the corresponding simulation efflux coefficient of analog parameter B；

Second formula are as follows:

Wherein, in the second formula, C_ABRefer to the corresponding simulation efflux coefficient of analog parameter B, Q_ABRefer to analog parameter B Including simulation fluid flow, d_ARefer to the analog equivalent opening diameter of the flashboard, D_lRefer to the caliber of simulation pipeline, ε_lIt is Refer to the expansion property coefficient of simulation fluid, ρ_lRefer to the density of simulation fluid, P_ABRefer to the first simulation pressure that analog parameter B includes Power, p_ABRefer to the second simulated pressure that analog parameter B includes；

5th determination unit 7083, for determining the corresponding mould of the corresponding at least one set analog parameter of simulation aperture A The average value of quasi- efflux coefficient, and the average value is determined as to simulate the corresponding simulation efflux coefficient of aperture A.

In the embodiment of the present invention, for flowing through the target fluid of the differential pressure type metering device, need to target fluid into When row metering, flashboard can be controlled by valve rod and be moved downward along the centerline direction of third connector, to pass through flashboard to target Fluid generates throttling action, and obtains the differential pressure type metering device in real time and connect in the first object pressure of the first joint and second The second goal pressure at head.It, can be in first object pressure and the second target in order to improve the metering accuracy of target fluid When difference between pressure meets pressure difference value range, target fluid is measured.When first object pressure and the second target When difference between pressure meets pressure difference value range, first object pressure and the second goal pressure are obtained, and obtain the differential pressure Practical aperture of the flashboard of formula metering device at current time determines in the corresponding relationship between flashboard aperture and efflux coefficient The corresponding practical efflux coefficient of the practical aperture of flashboard.Later, the expansion property coefficient and density and target tube of target fluid are obtained The caliber in road, and then based on first object pressure, the second goal pressure, the practical aperture of the flashboard and practical efflux coefficient, mesh The expansion property coefficient of fluid and the caliber of density and Target pipe are marked, determines the flow of target fluid, is realized to target fluid Metering.

It should be understood that the device of flow measurement provided by the above embodiment is in the flow for determining target fluid, only The example of the division of the above functional modules, in practical application, can according to need and by above-mentioned function distribution by Different functional modules is completed, i.e., the internal structure of equipment is divided into different functional modules, described above complete to complete Portion or partial function.In addition, the device of flow measurement provided by the above embodiment and the embodiment of the method for flow measurement belong to Same design, specific implementation process are detailed in embodiment of the method, and which is not described herein again.

Figure 11 shows the structural schematic diagram of the terminal 1100 of an illustrative embodiment of the invention offer.Referring to Figure 11, The terminal 1100 may is that smart phone, tablet computer, laptop or desktop computer.Terminal 1100 is also possible to be referred to as Other titles such as user equipment, portable terminal, laptop terminal, terminal console.Referring to Figure 11, terminal 1100 may include place Manage device 1101 and memory 1102.

Processor 1101 may include one or more processing cores, such as 4 core processors, 8 core processors etc..Place Reason device 1101 can use DSP (Digital Signal Processing, Digital Signal Processing), FPGA (Field- Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array, may be programmed Logic array) at least one of example, in hardware realize.Processor 1101 also may include primary processor and coprocessor, master Processor is the processor for being handled data in the awake state, also referred to as CPU (Central Processing Unit, central processing unit)；Coprocessor is the low power processor for being handled data in the standby state.In In some embodiments, processor 1101 can be integrated with GPU (Graphics Processing Unit, image processor), GPU is used to be responsible for the rendering and drafting of content to be shown needed for display screen.In some embodiments, processor 1101 can also be wrapped AI (Artificial Intelligence, artificial intelligence) processor is included, the AI processor is for handling related machine learning Calculating operation.

Memory 1102 may include one or more computer readable storage mediums, which can To be non-transient.Memory 1102 may also include high-speed random access memory and nonvolatile memory, such as one Or multiple disk storage equipments, flash memory device.In some embodiments, the non-transient computer in memory 1102 can Storage medium is read for storing at least one instruction, at least one instruction performed by processor 1101 for realizing this Shen Please in embodiment of the method provide a kind of flow metering method.

In some embodiments, terminal 1100 is also optional includes: peripheral device interface 1103 and at least one periphery are set It is standby.It can be connected by bus or signal wire between processor 1101, memory 1102 and peripheral device interface 1103.It is each outer Peripheral equipment can be connected by bus, signal wire or circuit board with peripheral device interface 1103.Specifically, peripheral equipment includes: At least one of radio circuit 1104, display screen 1105, positioning component 1106 and power supply 1107.

Peripheral device interface 1103 can be used for I/O (Input/Output, input/output) is relevant outside at least one Peripheral equipment is connected to processor 1101 and memory 1102.In some embodiments, processor 1101, memory 1102 and periphery Equipment interface 1103 is integrated on same chip or circuit board；In some other embodiments, processor 1101, memory 1102 and peripheral device interface 1103 in any one or two can be realized on individual chip or circuit board, this implementation Example is not limited this.

Radio circuit 1104 is for receiving and emitting RF (Radio Frequency, radio frequency) signal, also referred to as electromagnetic signal. Radio circuit 1104 is communicated by electromagnetic signal with communication network and other communication equipments.Radio circuit 1104 is by telecommunications Number being converted to electromagnetic signal is sent, alternatively, the electromagnetic signal received is converted to electric signal.Optionally, radio circuit 1104 include: antenna system, RF transceiver, one or more amplifiers, tuner, oscillator, digital signal processor, volume solution Code chipset, user identity module card etc..Radio circuit 1104 can by least one wireless communication protocol come with it is other Terminal is communicated.The wireless communication protocol includes but is not limited to: WWW, Metropolitan Area Network (MAN), Intranet, each third generation mobile communication network (2G, 3G, 4G and 5G), WLAN and/or WiFi (Wireless Fidelity, Wireless Fidelity) network.In some implementations In example, radio circuit 1104 can also include that NFC (Near Field Communication, wireless near field communication) is related Circuit, the application are not limited this.

Display screen 1105 is for showing UI (User Interface, user interface).The UI may include figure, text, Icon, video and its their any combination.When display screen 1105 is display screen, display screen 1105 also there is acquisition to show The ability of the touch signal on the surface or surface of screen 1105.The touch signal can be used as control signal and be input to processor 1101 are handled.At this point, display screen 1105 can be also used for providing virtual push button and/or dummy keyboard, also referred to as soft button and/ Or soft keyboard.In some embodiments, display screen 1105 can be one, and the front panel of terminal 1100 is arranged；In other realities It applies in example, display screen 1105 can be at least two, be separately positioned on the different surfaces of terminal 1100 or in foldover design；Again In some embodiments, display screen 1105 can be flexible display screen, be arranged on the curved surface of terminal 1100 or on fold plane. Even, display screen 1105 can also be arranged to non-rectangle irregular figure, namely abnormity screen.Display screen 1105 can use LCD (Liquid Crystal Display, liquid crystal display), OLED (Organic Light-Emitting Diode, it is organic Light emitting diode) etc. materials preparation.

Positioning component 1106 is used for the current geographic position of positioning terminal 1100, to realize navigation or LBS (Location Based Service, location based service).Positioning component 1106 can be the GPS (Global based on the U.S. Positioning System, global positioning system), China dipper system or Russia Galileo system positioning group Part.

Power supply 1107 is used to be powered for the various components in terminal 1100.Power supply 1107 can be alternating current, direct current Electricity, disposable battery or rechargeable battery.When power supply 1107 includes rechargeable battery, which can be line charge Battery or wireless charging battery.Wired charging battery is the battery to be charged by Wireline, and wireless charging battery is to pass through The battery of wireless coil charging.The rechargeable battery can be also used for supporting fast charge technology.

It, can be with it will be understood by those skilled in the art that the restriction of the not structure paired terminal 1100 of structure shown in Figure 11 Including than illustrating more or fewer components, perhaps combining certain components or being arranged using different components.

In the above-described embodiments, a kind of non-transient computer readable storage medium including instruction, the meter are additionally provided Calculation machine readable storage medium storing program for executing for storing at least one instruction, at least one instruction for performed by processor to realize The method that Fig. 4 and embodiment illustrated in fig. 5 offer are provided.

Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..

The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.