阅读说明：本技术 一种可变截面通道的流量测量装置及方法 (A kind of flow measurement device and method in variable cross section channel ) 是由 张凯 乔飞飞 魏璇 刘航 路小东 高雪 魏婷 于 2019-07-25 设计创作，主要内容包括：本发明公开了一种可变截面通道的流量测量装置,包括：测量模块(1),用于检测流量信息；压力传感器(2),用于检测压力信息；控制电路(3),连接所述测量模块(1)和所述压力传感器(2),用于根据所述压力信息控制所述测量模块(1)进行流量测量,并将所述流量信息通过通信电缆(4)发送给地面系统；其中,所述测量模块(1)包括开关阀片(11)。本发明提供的可变截面通道的流量测量装置具有较强的抗污能力、大的量程比和适应多种井况的优点。(The invention discloses a kind of flow measurement devices in variable cross section channel, comprising: measurement module (1) is used for detection flows information；Pressure sensor (2), for detecting pressure information；Control circuit (3), connect the measurement module (1) and the pressure sensor (2), flow measurement is carried out for controlling the measurement module (1) according to the pressure information, and the flow information is sent to ground system by communication cable (4)；Wherein, the measurement module (1) includes switch valve block (11).The flow measurement device in variable cross section channel provided by the invention has the advantages that stronger stain resistance, big range ratio and adapts to a variety of hole conditions.)

1. a kind of flow measurement device in variable cross section channel characterized by comprising

Flow adjustment module (1) is internally provided with flow rate adjustment feature (11), and the flow rate adjustment feature (11) is flowed through for adjusting The flow cross-sectional area of the flow rate adjustment feature (11)；

Pressure measuring module (2), for detecting the flow measurement device exterior fluid pressure value；

Control module (3) connects the pressure measuring module (2) and the flow adjustment module (1), for described when detecting When exterior fluid pressure value is consistent with initial pressure value, controls the flow rate adjustment feature (11) and stop adjusting the area of section；

Flow measurement module (4), for obtaining current fluid area of section when the flow rate adjustment feature (11) stop adjusting, And corresponding flow rate adjustment feature (11) the pressure at both sides difference of the current fluid area of section, and according to the current stream Body section area and the pressure difference value obtain flow value.

2. the flow measurement device in variable cross section channel according to claim 1, which is characterized in that the flow adjusts mould Block (1) further includes for installing the flow channels of the flow rate adjustment feature (11) (12).

3. the flow measurement device in variable cross section channel according to claim 1, which is characterized in that the flow rate adjustment feature It (11) include the moving valve plate (111) and fixed valve plate (112) being bonded to each other；At least one mistake is provided on the fixed valve plate (112) Discharge orifice.

4. the flow measurement device in variable cross section channel according to claim 3, which is characterized in that the flow adjusts mould Block (1) further includes driving mechanism (13), and the driving mechanism (13) connects the moving valve plate (111), for controlling the dynamic valve Piece (111) movement, to adjust the flow cross-sectional area for flowing through the flow channels (12).

5. the flow measurement device in variable cross section channel according to claim 1, which is characterized in that the flow measurement mould Block (4) includes pressure detector (41) and processor, and the pressure detector (41) connects the processor, described for detecting Corresponding flow rate adjustment feature (11) the pressure at both sides difference of current fluid area of section；The processor is for obtaining current stream Body section area simultaneously calculates flow value.

6. the flow measurement device in variable cross section channel according to claim 1, which is characterized in that further include communication module (5), the communication module (5) connects the pressure measuring module (2), control module (3) and the flow measurement module (4), For sending the control module (3) for the exterior fluid pressure value, and ground installation is sent by the flow value.

7. a kind of flow-measuring method in variable cross section channel, which comprises the following steps:

The area in flow channels section is adjusted to maximum, and detecting instrument exterior fluid pressure value obtains initial pressure value；

Liquid filling pressure is improved, while adjusting flow channels area of section to change exterior fluid pressure value；

Flow channels area of section is adjusted to fixed value according to the exterior fluid pressure value；

It obtains flow information and is uploaded to ground system.

8. the flow-measuring method in variable cross section channel according to claim 7, which is characterized in that according to the external stream Flow channels area of section is adjusted to fixed value by body pressure value

Real-time detection instrument exterior fluid pressure value, while continuing to adjust flow channels area of section；

When detecting that the exterior fluid pressure value is consistent with the initial pressure value, stop adjusting the flow channels section Area.

9. the flow-measuring method in variable cross section channel according to claim 7, which is characterized in that the acquisition flow letter It ceases and is uploaded to ground system and include:

Obtain current flow channels area of section and corresponding flow channels section front and back pressure difference value；

Current traffic information is obtained according to the flow channels area of section and the pressure difference value；

It reads the flow information and is uploaded to ground installation.

Technical field

The invention belongs to fluid measurement technical fields, and in particular to a kind of flow measurement device in variable cross section channel and side Method.

Background technique

With continually developing for oil gas field, formation pressure and oil content constantly reduce, and oil well output also persistently reduces.In order to Formation depletion caused by making up due to oil extraction improves crude output and estimates remaining oil reservoir content, so must oil supply Layer is filled the water.Oil-field flooding is in oilfield development process to stratum supplement energy, holding strata pressure, raising oil recovery rate With the important means for keeping oilfield stable production high yield.In the injecting process, need to carry out the water injection rate and oil reservoir quantum of output of each layer Accurate control, can effectively estimate oil reservoir situation in this way, to achieve the purpose that improve oil productivity.

The main abacus flow measurement of the common flow-measuring method of petroleum gas field at present, electromagnetic flow are surveyed Amount, vortex flow measurement, ultrasonic flow rate measurement and volume flow measuring.

However, pore plate flow measurement method range is smaller, while being affected by electronic component；Electromagnetic flow For measurement method to the more demanding of hole condition, pollution resistance is poor；Vortex flow measurement requires hole condition and flow rate of liquid relatively high； Ultrasonic flow rate measurement requires height to hole condition, and pollution resistance is poor；Volume flow measuring method requires equipment volume big, general only suitable For ground installation.

Summary of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of surveys of the flow in variable cross section channel Measure device and method.

The technical problem to be solved in the present invention is achieved through the following technical solutions:

A kind of flow measurement device in variable cross section channel, comprising:

Flow adjustment module, is internally provided with flow rate adjustment feature, and the flow rate adjustment feature flows through the flow for adjusting The flow cross-sectional area of adjustment part；

Pressure measuring module, for detecting the flow measurement device exterior fluid pressure value；

Control module connects the pressure measuring module and the flow adjustment module, detects the outside for working as When fluid pressure value is consistent with preset pressure value, controls the flow rate adjustment feature and stop adjusting the area of section；

Flow measurement module is used to obtain current fluid area of section when the flow rate adjustment feature stops adjusting, and The corresponding flow rate adjustment feature pressure at both sides difference of the current fluid area of section, and according to current fluid section face The long-pending and pressure difference value obtains flow value.

In one embodiment of the invention, the flow adjustment module further includes for installing the flow rate adjustment feature Flow channels.

In one embodiment of the invention, flow rate adjustment feature includes the moving valve plate and fixed valve plate being bonded to each other；It is described fixed At least one flowing hole is provided on valve block.

In one embodiment of the invention, the flow adjustment module further includes driving mechanism, and the driving mechanism connects The moving valve plate is connect, for controlling the moving valve plate movement, to adjust the flow cross-sectional area for flowing through the flow channels.

In one embodiment of the invention, the flow measurement module includes pressure detector and processor, the pressure Difference detector connects the processor, for detecting corresponding two side pressure of flow rate adjustment feature of the current fluid area of section Power difference；The processor is for obtaining current fluid area of section.

It in one embodiment of the invention, further include communication module, the communication module connects the pressure measurement mould Block, control module and the flow measurement module, for sending the control module for the exterior fluid pressure value, and Ground installation is sent by the flow value.

A kind of flow-measuring method in variable cross section channel, comprising the following steps:

The area in flow channels section is adjusted to maximum；

Detecting instrument exterior fluid pressure value；

Flow channels area of section is adjusted to fixed value according to the instrument exterior fluid pressure value；

It obtains flow information and is uploaded to ground system.

In one embodiment of the invention, the face in flow channels section is adjusted according to the instrument exterior fluid pressure value Product includes:

Instrument exterior fluid pressure value described in real-time detection, while adjusting flow channels area of section；

When detecting that the exterior fluid pressure value is consistent with preset pressure value, stop adjusting the flow channels section Area.

In one embodiment of the invention, it the acquisition flow information and is uploaded to ground system and includes:

Obtain current flow channels area of section and corresponding flow channels section front and back pressure difference value；

Current traffic information is obtained according to the flow channels area of section and the pressure difference value；

It reads the flow information and is uploaded to ground installation.

Beneficial effects of the present invention:

1, the flow measurement device in variable cross section channel provided by the invention is superimposed by the expansion in multiple sections, so that whole The range ratio of a instrument is expanded, and can satisfy the measurement demand of wide range ratio；

2, the flow measurement device in variable cross section channel provided by the invention carries out flow channels section using moving component The adjustment of area, relative to stationary parts, movement parts are less susceptible to fouling, depositing contaminants and blocking, have good antifouling property；

3, the flow measurement device structure in variable cross section channel provided by the invention is simplified, and can satisfy making for different well's conditions Hole condition requirement with requiring, especially under the conditions of different medium pressure etc.；

4, the flow measurement device in variable cross section channel provided by the invention and method have better performance of control, can Apparatus measures regulation is set to become more effective, more acurrate.

The present invention is described in further details below with reference to accompanying drawings and embodiments.

Detailed description of the invention

Fig. 1 is a kind of flow measurement device structural schematic diagram in variable cross section channel provided in an embodiment of the present invention；

Fig. 2 is the flow measurement device structural schematic diagram in another variable cross section channel provided in an embodiment of the present invention；

Fig. 3 is flow rate adjustment feature structural schematic diagram provided in an embodiment of the present invention；

Fig. 4 is flow adjustment module provided in an embodiment of the present invention and flow measurement module structural schematic diagram；

Fig. 5 is that fluid provided in an embodiment of the present invention passes through section energy variation schematic diagram；

Fig. 6 is the changes in flow rate schematic diagram that fluid provided in an embodiment of the present invention passes through different cross section；

Fig. 7 is multiple cross section property curve graphs provided in an embodiment of the present invention.

Specific embodiment

Further detailed description is done to the present invention combined with specific embodiments below, but embodiments of the present invention are not limited to This.