阅读说明：本技术 一种气体流量计 (Gas flowmeter ) 是由 不公告发明人 于 2019-09-11 设计创作，主要内容包括：本发明属于计量技术领域,具体的说是一种气体流量计；包括连接筒,所述连接筒顶部设置有核心件,所述核心件底部连接有传感元件,传感元件底端设置在连接筒内侧中部,传感元件包括速度传感器和温度传感器；所述连接筒底部连接有U型管,U型管两端分别设置在传感元件两侧,且远离传感元件；本发明通过设置U型管,在传感元件下方设置有U型管,U型管两端分别设置在传感元件两侧,且远离传感元件,同时在传感元件与U型管右端之间的连接筒内壁底部固连有挡板,这样通过管道运输而来的液化水到达传感元件底部之前进入到U型管左端,不会从传感元件底部的连接筒内壁经过,从而不会吸收温度传感器的热量,保证了测量的精度。(The invention belongs to the technical field of metering, and particularly relates to a gas flowmeter; the temperature sensor comprises a connecting cylinder, wherein a core piece is arranged at the top of the connecting cylinder, a sensing element is connected to the bottom of the core piece, the bottom end of the sensing element is arranged in the middle of the inner side of the connecting cylinder, and the sensing element comprises a speed sensor and a temperature sensor; the bottom of the connecting cylinder is connected with a U-shaped pipe, and two ends of the U-shaped pipe are respectively arranged on two sides of the sensing element and are far away from the sensing element; according to the invention, the U-shaped pipe is arranged below the sensing element, two ends of the U-shaped pipe are respectively arranged at two sides of the sensing element and are far away from the sensing element, and the baffle is fixedly connected to the bottom of the inner wall of the connecting cylinder between the sensing element and the right end of the U-shaped pipe, so that liquefied water conveyed by a pipeline enters the left end of the U-shaped pipe before reaching the bottom of the sensing element and cannot pass through the inner wall of the connecting cylinder at the bottom of the sensing element, the heat of the temperature sensor cannot be absorbed, and the measurement accuracy is ensured.)

1. A gas flowmeter comprising a connecting cylinder (1), characterized in that: the top of the connecting cylinder (1) is provided with a core piece (2), the bottom of the core piece (2) is connected with a sensing element (3), the bottom end of the sensing element (3) is arranged in the middle of the inner side of the connecting cylinder (1), and the sensing element (3) comprises a speed sensor (31) and a temperature sensor (32); the bottom of the connecting cylinder (1) is connected with a U-shaped pipe (4), and two ends of the U-shaped pipe (4) are respectively arranged on two sides of the sensing element (3) and are far away from the sensing element (3); and a baffle (5) is fixedly connected to the bottom of the inner wall of the connecting cylinder (1) between the sensing element (3) and the right end of the U-shaped pipe (4), and the baffle (5) is close to the U-shaped pipe (4).

2. A gas meter as claimed in claim 1, wherein: the inner part of the U-shaped pipe (4) is provided with a buoyancy ball (6), the inner wall of the connecting cylinder (1) at the top of one end of the U-shaped pipe (4) is fixedly connected with a top plate (7), and the bottom of the top plate (7) is provided with a button (8).

3. A gas meter as claimed in claim 2, wherein: the inner wall of the vertical section of the U-shaped pipe (4) at the bottom of the top plate (7) is connected with two corrugated cushions (9), the distance between the adjacent wave crests on different corrugated cushions (9) is gradually reduced when the two corrugated cushions (9) are lifted up, and a plurality of friction balls are arranged inside the wave crests of the corrugated cushions (9).

4. A gas meter as claimed in claim 3, wherein: the top plate (7) is made of rubber material.

5. A gas meter as claimed in claim 1, wherein: the connecting cylinder (1) bottom center department intercommunication has delivery pipe (10), and delivery pipe (10) inside is provided with retaining ring (11), and only contact ring (12) are established at retaining ring (11) top, and it has action bars (13) to peg graft on contact ring (12), and action bars (13) bottom sets up in delivery pipe (10) outside bottom.

6. A gas meter as claimed in claim 5, wherein: the top of the operating rod (13) is provided with an extrusion bag (14), the contact ring (12) is provided with an annular bag (15) at the position contacted with the retainer ring (11), and the extrusion bag (14) is communicated with the annular bag (15) through a hose (16).

Technical Field

The invention belongs to the technical field of metering, and particularly relates to a gas flowmeter.

Background

a gas flow meter is a meter that meters the flow of gas. The installation was in the line to record the amount of gas flowing through. It is possible to measure gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine, fuel gas, biogas, carbon dioxide, oxygen, compressed air, argon, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia gas, and the like. The thermal gas mass flowmeter adopts a thermal diffusion principle, and the thermal diffusion technology is a technology with excellent performance and high reliability under severe conditions. Its typical sensing element consists of two thermal resistors (platinum RTDs), one being a speed sensor and one being a temperature sensor that automatically compensates for changes in gas temperature. When two RTDs are placed in a medium, where the speed sensor is heated to a constant temperature above ambient temperature, the other temperature sensor is used to sense the medium temperature. The mass flow of gas through the velocity sensor is calculated by the amount of heat transferred through the sensing element. The gas flow rate increases and the amount of heat carried away by the media increases. Causing the sensor temperature to decrease. In order to keep the temperature constant, the operating current through the sensor must be increased, the magnitude of this increased partial current being proportional to the flow rate of the medium.

In view of the above, the present invention provides a gas flowmeter capable of reducing the influence of liquefied water and ensuring the measurement accuracy, in which a gas flowmeter is installed on a transmission pipeline for measuring some gases containing hot steam, the hot steam in the gases is liquefied on the pipeline, liquefied water reaches the bottom of the inner side of the gas flowmeter through the pipeline, and the liquefied water takes away a part of heat generated by a temperature sensor during heating, thereby causing the reduction of the measurement accuracy.

Disclosure of Invention

In view of the disadvantages of the prior art, the present invention provides a gas flowmeter, which mainly uses a U-shaped pipe to guide the liquefied water flowing through the bottom of a sensing element through the U-shaped pipe, and then the liquefied water passes through the U-shaped pipe far away from the sensing element, so as to solve the problems in the background art.

in order to achieve the purpose, the invention provides the following technical scheme: a gas flowmeter comprises a connecting cylinder, wherein a core piece is arranged at the top of the connecting cylinder, a sensing element is connected to the bottom of the core piece, the bottom end of the sensing element is arranged in the middle of the inner side of the connecting cylinder, and the sensing element comprises a speed sensor and a temperature sensor; the bottom of the connecting cylinder is connected with a U-shaped pipe, and two ends of the U-shaped pipe are respectively arranged on two sides of the sensing element and are far away from the sensing element; a baffle is fixedly connected to the bottom of the inner wall of the connecting cylinder between the sensing element and the right end of the U-shaped pipe, and the baffle is close to the U-shaped pipe; when the device works, the connecting cylinder is arranged on a transmission pipeline and is used for measuring some gases containing hot steam, the hot steam in the gases can be liquefied on the pipeline, liquefied water can reach the bottom of the inner side of the connecting cylinder through the pipeline, and the liquefied water can take away part of heat generated when a temperature sensor is heated, so that the measurement accuracy is reduced, therefore, a U-shaped pipe is arranged below a sensing element, two ends of the U-shaped pipe are respectively arranged at two sides of the sensing element and are far away from the sensing element, meanwhile, a baffle is fixedly connected at the bottom of the inner wall of the connecting cylinder between the sensing element and the right end of the U-shaped pipe, so that the liquefied water conveyed through the pipeline enters the left end of the U-shaped pipe before reaching the bottom of the sensing element and cannot pass through the inner wall of the connecting cylinder at the bottom of the sensing element, the heat of the temperature sensor cannot be absorbed, the measurement accuracy, liquid enters from the left end of the U-shaped pipe completely, overflows from the right end of the U-shaped pipe finally, and moves to the next process from the right end of the connecting cylinder finally.

Preferably, a buoyancy ball is arranged inside the U-shaped pipe, a top plate is fixedly connected to the inner wall of the connecting cylinder at the top of one end of the U-shaped pipe, and a button is arranged at the bottom of the top plate; the button can electric connection have the alarm, the alarm can be installed on duty, when the intraductal liquefied water of U type is gradual to be increased more, can promote the buoyancy ball and rise, the buoyancy ball rises when U type pipe left end top, when the liquefied water is still incessant reachs, can promote the buoyancy ball and extrude the button, final button can trigger the alarm and report to the police, a large amount of steam have been produced when explaining source department gas produces, in time remind whether the staff to look over the trouble when source, the security of during operation has been improved.

Preferably, the inner wall of the vertical section of the U-shaped pipe at the bottom of the top plate is connected with two corrugated cushions, the distance between adjacent wave crests on different corrugated cushions gradually decreases from bottom to top, and a plurality of friction balls are arranged inside the wave crests of the corrugated cushions; when the liquefied water is slowly accumulated in the initial U-shaped pipe, the liquefied water can push the buoyancy ball to rise, the buoyancy ball can reach between the two corrugated cushions when rising, the buoyancy ball can be extruded to the wave crests of the corrugated cushions when rising by the buoyancy of the liquefied water, the friction balls in the wave crests are extruded to be mutually staggered, abnormal sound is further generated, and workers can process the abnormal sound timely and simultaneously, the distance between the two adjacent wave crests on the different corrugated cushions is gradually reduced when the two corrugated cushions rise from bottom to top, when the buoyancy ball is extruded to press one wave crest when rising, the resistance of the wave crest at the moment is larger than that of the previous wave crest, the reaction force of the buoyancy ball to the wave crest at the moment is also larger, when the buoyancy ball extrudes the friction balls in the wave crests at the moment, the intensity of the generated abnormal sound is larger, and the workers can judge the height of the water level according to the past experience by combining the sound, and measures are taken to determine whether the maintenance is suspended, so that the probability of alarm alarming caused by the fact that the subsequent buoyancy ball rises to press the button is reduced, and energy is saved.

Preferably, the top plate is made of a rubber material; when the volume of liquefied water is more, just can make the buoyancy ball cross two ripple pad tops when the water level is gathered higher, this moment buoyancy ball has higher speed when locating to remove to the button, when striking the button, has stronger impact force to the button, because the roof is made by rubber materials, consequently when the buoyancy ball strikes the button, can be with roof extrusion deformation, play certain cushioning effect, improved the life of button.

Preferably, the center of the bottom of the connecting cylinder is communicated with a discharge pipe, a check ring is arranged in the discharge pipe, the top of the check ring is only provided with a contact ring, an operating rod is inserted into the contact ring, and the bottom end of the operating rod is arranged at the bottom of the outer side of the discharge pipe; after the process measurement of here is accomplished, when pulling down the connecting cylinder from the pipeline, can be with the connecting cylinder right-hand member down this moment, pour the intraductal water of U type through the connecting cylinder right-hand member, when this measurement finishes, when still needing follow-up measurement, the connecting pipe is still installed on the pipeline, can rise through promoting the action bars this moment, the action bars top drives contact ring and retaining ring after-separating, the inside liquefied water of U type pipe can be followed the delivery pipe bottom and discharged, carry out different operations according to the circumstances of difference, the practicality is high.

Preferably, the top of the operating rod is provided with a squeezing bag, the position on the contact ring, which is in contact with the retainer ring, is provided with an annular bag, and the squeezing bag is communicated with the annular bag through a hose; the extrusion bag on action bars top receives the pressure of liquefied water to extrude the action bars downwards on the one hand, and then drives the extrusion bag and pastes tight annular bag, and on the other hand the extrusion bag can pass through the hose with its inside gas and impress annular bag, and annular bag slightly rises, and annular bag after slightly rising can contact and carry out better sealed between circle and the retaining ring, has improved sealed effect.

The invention has the technical effects and advantages that:

1. according to the gas flowmeter provided by the invention, the U-shaped pipe is arranged below the sensing element, two ends of the U-shaped pipe are respectively arranged at two sides of the sensing element and are far away from the sensing element, and the baffle is fixedly connected to the bottom of the inner wall of the connecting cylinder between the sensing element and the right end of the U-shaped pipe, so that liquefied water conveyed by a pipeline enters the left end of the U-shaped pipe before reaching the bottom of the sensing element and cannot pass through the inner wall of the connecting cylinder at the bottom of the sensing element, the heat of the temperature sensor cannot be absorbed, and the measurement accuracy is ensured.

2. According to the gas flowmeter, the button is arranged, the button can be electrically connected with the alarm, the alarm can be installed in a duty room, when the liquefied water in the U-shaped pipe gradually increases, the buoyancy ball can be pushed to rise, when the buoyancy ball rises to the top of the left end of the U-shaped pipe, when the liquefied water continuously arrives, the buoyancy ball can be pushed to extrude the button, finally the button can trigger the alarm to give an alarm, a large amount of hot steam is generated when gas at the source, a worker is timely reminded of checking whether a fault occurs at the source, and the safety during working is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a principal cross-sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;

In the figure: the device comprises a connecting cylinder 1, a core 2, a sensing element 3, a speed sensor 31, a temperature sensor 32, a U-shaped pipe 4, a baffle plate 5, a buoyancy ball 6, a top plate 7, a button 8, a corrugated pad 9, a discharge pipe 10, a check ring 11, a contact ring 12, an operating rod 13, a squeezing bag 14, an annular bag 15 and a hose 16.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described below with reference to the specific embodiments, and the front, the back, the left, the right, the upper and the lower of the invention are all based on the view direction of fig. 2.

As shown in fig. 1 to 3, the gas flowmeter according to the present invention includes a connecting cylinder 1, a core member 2 is disposed on the top of the connecting cylinder 1, a sensing element 3 is connected to the bottom of the core member 2, the bottom end of the sensing element 3 is disposed in the middle of the inside of the connecting cylinder 1, and the sensing element 3 includes a speed sensor 31 and a temperature sensor 32; the bottom of the connecting cylinder 1 is connected with a U-shaped pipe 4, and two ends of the U-shaped pipe 4 are respectively arranged at two sides of the sensing element 3 and are far away from the sensing element 3; a baffle 5 is fixedly connected to the bottom of the inner wall of the connecting cylinder 1 between the sensing element 3 and the right end of the U-shaped pipe 4, and the baffle 5 is close to the U-shaped pipe 4; when the device works, when the connecting cylinder 1 is arranged on a transmission pipeline and used for measuring some gases containing hot steam, the hot steam in the gases can be liquefied on the pipeline, liquefied water can reach the bottom of the inner side of the connecting cylinder 1 through the pipeline, and the liquefied water can take away part of heat generated when the temperature sensor 32 is heated, so that the measurement precision is reduced, therefore, the U-shaped pipe 4 is arranged below the sensing element 3, two ends of the U-shaped pipe 4 are respectively arranged at two sides of the sensing element 3 and are far away from the sensing element 3, meanwhile, the baffle 5 is fixedly connected with the bottom of the inner wall of the connecting cylinder 1 between the sensing element 3 and the right end of the U-shaped pipe 4, so that the liquefied water transported through the pipeline enters the left end of the U-shaped pipe 4 before reaching the bottom of the sensing element 3 and cannot pass through the inner wall of the connecting cylinder 1 at the bottom of the sensing element 3, therefore, the heat, after the U-shaped pipe 4 is filled with more liquid, the liquid is blocked by the baffle 5, so that the liquid completely enters from the left end of the U-shaped pipe 4, finally overflows from the right end of the U-shaped pipe 4, and finally moves to the next process from the right end of the connecting cylinder 1.

A buoyancy ball 6 is arranged inside the U-shaped pipe 4, the inner wall of the connecting cylinder 1 at the top of one end of the U-shaped pipe 4 is fixedly connected with a top plate 7, and a button 8 is arranged at the bottom of the top plate 7; button 8 can electric connection have the alarm, the alarm can be installed on duty, when the liquefaction water in U type pipe 4 is progressively crescent many, can promote buoyancy ball 6 and rise, buoyancy ball 6 rises to when U type pipe 4 left end top, when the liquefaction water is still incessant reachs, can promote buoyancy ball 6 and extrude button 8, final button 8 can trigger the alarm and report to the police, a large amount of hot steam has been produced when explaining source department gas production, in time remind whether the trouble has taken place when the staff looks over the source, the security of during operation has been improved.

the inner wall of the vertical section of the U-shaped pipe 4 at the bottom of the top plate 7 is connected with two corrugated cushions 9, the distance between adjacent wave crests on different corrugated cushions 9 is gradually reduced when the two corrugated cushions 9 move from bottom to top, and a plurality of friction balls are arranged inside the wave crests of the corrugated cushions 9; when the liquefied water is slowly accumulated in the initial U-shaped pipe 4, the liquefied water pushes the buoyancy ball 6 to rise, the buoyancy ball 6 reaches between the two corrugated cushions 9 when rising, the buoyancy ball 6 extrudes the wave crests of the corrugated cushions 9 when rising by the buoyancy of the liquefied water, the friction balls in the wave crests are extruded to be mutually dislocated, abnormal sound is further emitted, and a worker can timely and simultaneously handle the abnormal sound, meanwhile, the distance between the adjacent wave crests on different corrugated cushions 9 is gradually reduced when the two corrugated cushions 9 rise from bottom to top, when one wave crest is extruded when the buoyancy ball 6 rises, the wave crest at the moment is larger than the previous wave crest and has larger resistance to the buoyancy ball 6, the counter-acting force of the buoyancy ball 6 to the wave crest at the moment is larger, and when the buoyancy ball 6 extrudes the friction balls in the wave crests at the moment, the intensity of the emitted abnormal sound is larger, and the worker can combine the sound and according to the past experience, the height of the water level is judged, measures are further taken to determine whether the maintenance is suspended, the probability that the alarm alarms due to the fact that the subsequent buoyancy ball 6 ascends to press the button 8 is reduced, and energy is saved.

The top plate 7 is made of a rubber material; when the volume of liquefied water is more, the water level is gathered and just can be made buoyancy ball 6 cross two ripple pads 9 tops when higher, and buoyancy ball 6 has higher speed when locating to remove to button 8 this moment, when striking button 8, has stronger impact force to button 8, because roof 7 is made by rubber materials, consequently when buoyancy ball 6 strikes button 8 on, can be with roof 7 extrusion deformation, play certain cushioning effect, improved button 8's life.

A discharge pipe 10 is communicated with the center of the bottom of the connecting cylinder 1, a check ring 11 is arranged inside the discharge pipe 10, only a contact ring 12 is arranged at the top of the check ring 11, an operating rod 13 is inserted into the contact ring 12, and the bottom end of the operating rod 13 is arranged at the bottom of the outer side of the discharge pipe 10; after the process measurement here is accomplished, when connecting cylinder 1 is pulled down from the pipeline, can be with connecting cylinder 1 right-hand member down this moment, pour the water in U type pipe 4 through connecting cylinder 1 right-hand member, when this measurement finishes, when still needing follow-up measurement, the connecting pipe still installs on the pipeline, can rise through promoting action bars 13 this moment, action bars 13 top drives contact ring 12 and retaining ring 11 after separating, the inside liquefied water of U type pipe 4 can be followed the discharge pipe 10 bottom and discharged, carry out different operations according to the condition of difference, and the practicality is high.

The top of the operating rod 13 is provided with a squeezing bag 14, the contact ring 12 is provided with an annular bag 15 at the position contacting with the retainer ring 11, and the squeezing bag 14 is communicated with the annular bag 15 through a hose 16; on the one hand, the extrusion bag 14 at the top end of the operating rod 13 is pressed downwards by the pressure of the liquefied water to extrude the operating rod 13, so that the extrusion bag 14 is driven to be attached to the annular bag 15, on the other hand, the extrusion bag 14 can press the gas in the extrusion bag into the annular bag 15 through the hose 16, the annular bag 15 slightly expands, the slightly expanded annular bag 15 can be in contact with the space between the ring 12 and the check ring 11 for better sealing, and the sealing effect is improved.

When the device works, when the connecting cylinder 1 is arranged on a transmission pipeline and used for measuring some gases containing hot steam, the hot steam in the gases can be liquefied on the pipeline, liquefied water can reach the bottom of the inner side of the connecting cylinder 1 through the pipeline, and the liquefied water can take away part of heat generated when the temperature sensor 32 is heated, so that the measurement precision is reduced, therefore, the U-shaped pipe 4 is arranged below the sensing element 3, two ends of the U-shaped pipe 4 are respectively arranged at two sides of the sensing element 3 and are far away from the sensing element 3, meanwhile, the baffle 5 is fixedly connected with the bottom of the inner wall of the connecting cylinder 1 between the sensing element 3 and the right end of the U-shaped pipe 4, so that the liquefied water transported through the pipeline enters the left end of the U-shaped pipe 4 before reaching the bottom of the sensing element 3 and cannot pass through the inner wall of the connecting cylinder 1 at the bottom of the sensing element 3, therefore, the heat, after the U-shaped pipe 4 is filled with more liquid, the liquid is blocked by the baffle 5, so that the liquid completely enters from the left end of the U-shaped pipe 4, finally overflows from the right end of the U-shaped pipe 4, and finally moves to the next process from the right end of the connecting cylinder 1.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.