CN216386185U - Gas circuit system for checking gas meter sealing performance and ventilating detection - Google Patents
Gas circuit system for checking gas meter sealing performance and ventilating detection Download PDFInfo
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- CN216386185U CN216386185U CN202123185634.3U CN202123185634U CN216386185U CN 216386185 U CN216386185 U CN 216386185U CN 202123185634 U CN202123185634 U CN 202123185634U CN 216386185 U CN216386185 U CN 216386185U
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Abstract
The utility model relates to a gas circuit system for checking gas meter tightness and ventilation detection. The device is characterized in that the high-pressure air source interface, the air source air inlet valve, the left pressurizing valve and the right pressurizing valve are connected to a left air port and a right air port of the meter to be detected through air pipes, and form a gas loop at the detected end for tightness detection with a stop valve arranged in the meter to be detected; the high-pressure air source interface, the air source air inlet valve, the communicating valve and the standard end pressurizing valve are connected to a left air port of the standard meter through an air pipe, and form a standard end air loop for tightness detection with a stop valve arranged in the standard meter; the communicating valve is connected with the differential pressure sensor in parallel, one end of the communicating valve is connected with the measured meter through the left pressurizing valve and the right pressurizing valve, and the other end of the communicating valve is connected with the standard meter through the standard end pressurizing valve, so that a pressure detection loop for detecting the sealing performance is formed. The utility model combines the tightness detection gas circuit and the ventilation detection gas circuit to improve the efficiency; replace current big small standard jar for the standard table for the volume tends to unanimity, is favorable to improving leakproofness testing stability.
Description
Technical Field
The utility model relates to a gas circuit system for checking gas meter tightness and ventilation detection.
Background
When the gas meter is used for sealing detection and ventilation measurement detection, a sealing detection gas circuit and a ventilation gas circuit are required to be built to provide a detection environment. The existing tightness detection gas circuit needs to selectively use a sealing cover to seal a left gas port or a right gas port of the measured meter according to the gas flow direction of the measured meter, so that the integral sealing of the measured meter is realized, and the sealing cover is removed after the detection is finished to realize the exhaust of the detection gas circuit. And a ventilation detection gas circuit provides a ventilation gas source through a vortex fan and a reversing valve, and ventilation detection of the meter to be detected is realized by selecting the state of the reversing valve according to the gas flow direction of the meter to be detected.
In summary, the conventional inspection system has the following disadvantages:
firstly, the tightness detection and the ventilation detection are respectively carried out on two stations, the detected meter needs to be circulated, and the efficiency is low;
secondly, the gas outlet of the meter to be detected needs to be sealed according to the gas flow direction of the meter to be detected, and the meter to be detected needs to be disassembled after the detection is finished, so that the labor intensity is high and the efficiency is low;
and thirdly, the standard tank can not be consistent with the volumes of all models of measured meters, so that the detection stability is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a technical scheme of a gas path system for checking the tightness of a gas meter and detecting the ventilation.
The gas path system for checking the sealing performance and ventilation detection of the gas meter is characterized by comprising a high-pressure gas source interface, a gas source air inlet valve, a communication valve, a left pressurizing valve, a right pressurizing valve, a left vent valve, a right vent valve, a left axial flow fan, a right axial flow fan, a standard end pressurizing valve, an exhaust valve, a measured meter and a standard meter, wherein the high-pressure gas source interface can be externally connected with a gas source, the high-pressure gas source interface is connected with the gas source air inlet valve through a gas pipe, the gas source air inlet valve is connected with the left pressurizing valve, the right pressurizing valve and the communication valve through gas pipes, the left pressurizing valve and the left vent valve are connected with a left gas port of the measured meter through gas pipes, the right pressurizing valve and the right vent valve are connected with a right gas port of the measured meter through gas pipes, the left vent valve is connected with the left fan through a gas pipe, the right vent valve is connected with the right fan through a gas pipe, and the communication valve is provided with a differential pressure sensor in parallel, one end of the communicating valve is connected with the air source air inlet valve, the left pressurizing valve and the right pressurizing valve, the other end of the communicating valve is connected with the standard end pressurizing valve, the standard end pressurizing valve is connected with a left air port of the standard meter through an air pipe, and the exhaust valve is connected with a right air port of the standard meter through an air pipe.
The gas circuit system for checking the tightness of the gas meter and detecting the ventilation is characterized in that a check valve arranged in the measured meter is arranged in the measured meter, and a check valve arranged in the standard meter is arranged in the standard meter.
The gas circuit system for checking the tightness of the gas meter and detecting the ventilation is characterized in that the high-pressure gas source interface is connected to a left gas port and a right gas port of the measured meter through a gas source gas inlet valve, a left pressurizing valve and a right pressurizing valve through gas pipes, and forms a gas circuit at the measured end for detecting the tightness with a stop valve arranged in the measured meter.
The gas path system for checking the tightness and the ventilation detection of the gas meter is characterized in that the high-pressure gas source interface is connected to a left gas port of the standard meter through a gas source gas inlet valve, a communication valve and a standard end pressurization valve through a gas pipe, and forms a standard end gas loop for tightness detection with a stop valve arranged in the standard meter.
The gas circuit system for checking the tightness of the gas meter and detecting the ventilation is characterized in that the communication valve and one end of the differential pressure sensor are connected with a measured meter through the left pressurizing valve and the right pressurizing valve, and the communication valve and the other end of the differential pressure sensor are connected with a standard meter through the standard end pressurizing valve to form a pressure detection loop for detecting the tightness.
The gas circuit system for checking the gas meter tightness and the ventilation detection is characterized in that the left fan, the left vent valve, the right fan, the right vent valve and the measured meter form a gas circuit for the ventilation detection.
The gas path system for checking the tightness of the gas meter and detecting the ventilation is characterized in that the exhaust valve, the standard meter, the standard end pressurizing valve, the communicating valve, the left pressurizing valve, the right pressurizing valve and the measured meter form an exhaust loop for detecting the tightness.
The utility model has the following advantages:
1. the tightness detection gas circuit and the ventilation detection gas circuit are combined, and the states of the gas circuits are switched under the control of a valve so as to provide different detection environments, thereby improving the efficiency;
2. the vortex fan and the reversing valve adopted in ventilation detection in the prior art are replaced by the left axial flow fan and the right axial flow fan, so that the volume and the power consumption of equipment are reduced;
3. the size standard tank in the tightness detection gas circuit of the existing scheme is replaced by a standard meter, so that the volumes of the detected end and the standard end tend to be consistent, and the tightness detection stability is favorably improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-high-pressure air source interface, 2-air source air inlet valve, 3-communication valve, 4-left pressurizing valve, 4-1-right pressurizing valve, 5-left vent valve, 5-1 right vent valve, 6-left axial flow fan, 6-1-right axial flow fan, 7-standard end pressurizing valve, 8-exhaust valve, 9-measured meter built-in stop valve, 9-1 standard meter built-in stop valve, 10-measured meter, 11-standard meter and 12-differential pressure sensor.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which:
a gas circuit system for verifying gas meter sealing performance and detecting of ventilating, comprising: the high-pressure air source interface 1, the air source air inlet valve 2, the communicating valve 3, the left pressurizing valve 4, the right pressurizing valve 4-1, the left vent valve 5, the right vent valve 5-1, the left axial flow fan 6, the right axial flow fan 6-1, the standard end pressurizing valve 7, the exhaust valve 8, the tested meter built-in stop valve 9, the standard meter built-in stop valve 9-1, the tested meter 10, the standard meter 11 and the differential pressure sensor 12 are connected with the left air port and the right air port of the tested meter 10 through air pipes, and a tested end air loop for detecting the sealing performance is formed by the high-pressure air source interface 1, the air source air inlet valve 2, the left pressurizing valve 4 and the right pressurizing valve 4-1 and the tested meter built-in stop valve 9;
the high-pressure air source interface 1, the air source air inlet valve 2, the communicating valve 3 and the standard end pressurizing valve 7 are connected to a left air port of the standard meter 11 through an air pipe, and form a standard end air loop for tightness detection with a built-in stop valve 9-1 of the standard meter;
the differential pressure sensor 12 is connected with the communicating valve 3 in parallel through an air pipe, one end of the communicating valve 3 is connected with the measured meter 10 through the left pressurizing valve 4 and the right pressurizing valve 4-1, and the other end of the communicating valve 3 is connected with the standard meter 11 through the standard end pressurizing valve 7, so that a pressure detection loop for detecting the sealing performance is formed.
The left vent valve 5 and the left axial flow fan 6 are connected to a left air port of the tested meter 10 through air pipes, the right vent valve 5-1 and the right fan 6-1 are connected to a right air port of the tested meter 10 through air pipes, and the left vent valve 5, the left axial flow fan 6, the right vent valve 5-1, the right axial flow fan 6-1 and the tested meter 10 form an air loop for ventilation detection.
The exhaust valve 8 is connected with a right air port of the standard meter 11, and forms an exhaust loop for detecting the sealing performance with the measured meter 10, the left pressurizing valve 4, the right pressurizing valve 4-1, the communicating valve 3, the standard end pressurizing valve 7 and the standard meter 11.
Specifically, when the overall tightness of the tested meter 10 needs to be detected, the air source air inlet valve 2 is opened, the internal stop valve 9 of the tested meter and the internal stop valve 9-1 of the standard meter are opened, the left pressurizing valve 4 or the right pressurizing valve 4-1 is opened according to the air flow direction of the tested meter, the left vent valve 5 and the right vent valve 5-1 are closed, the pressurizing valve 7 of the standard meter is opened, the communication valve 3 is opened, and the vent valve 8 is closed, at the moment, high-pressure air enters the tested meter 10 from the high-pressure air source interface 1 through the air source air inlet valve 2, the left pressurizing valve 4 or the right pressurizing valve 4-1, and because the internal stop valve 9 of the tested meter is in an opened state, the air in the overall internal space of the tested meter 10 is gradually pressurized to the pressure required for detection; meanwhile, high-pressure gas enters the standard meter 11 through the communication valve 3 and the standard meter pressurization valve 7, and the gas in the whole internal space of the standard meter 11 is gradually pressurized to the pressure required by detection due to the fact that the built-in stop valve 9-1 of the standard meter is in an open state. After pressurization is completed, the air source air inlet valve 2 is closed, the communication valve 3 is closed after the air in the meter to be measured 10 and the standard meter 11 is stable, and the pressure change of the meter to be measured 10 relative to the standard meter 11 can be obtained through the differential pressure sensor 12, so that the overall sealing performance of the meter to be measured 10 is judged. And after the detection is finished, the exhaust valve 8 is opened, and the high-pressure gas in the detection loop is exhausted and returns to the normal pressure.
Specifically, when the tightness of the built-in stop valve 9 of the measured meter needs to be detected, the air source air inlet valve 2 is opened, the built-in stop valve 9 of the measured meter, the built-in stop valve 9-1 of the standard meter, the right pressurizing valve 4-1 and the left vent valve 5 are closed, the left pressurizing valve 4 and the right vent valve 5-1 are opened, and the standard end pressurizing valve 7, the communicating valve 3 and the exhaust valve 8 are opened. At the moment, high-pressure gas enters the tested meter 10 from the high-pressure gas source interface 1 through the gas source air inlet valve 2 and the left pressurizing valve 4, and gas in a gas path space formed by the left pressurizing valve 4, the left vent valve 5 and the standard meter built-in stop valve 9 is gradually pressurized to the detection pressure because the standard meter built-in stop valve 9 is closed; meanwhile, high-pressure gas enters the standard meter 11 from the high-pressure gas source interface 1 through the communication valve 3 and the standard end pressurization valve 7, and gas in a gas path space formed by the standard end pressurization valve 7 and the standard meter built-in valve 9-1 is gradually pressurized to detection pressure due to the fact that the standard meter built-in valve 9-1 is closed. After pressurization is completed, the air source air inlet valve 2 is closed, the communicating valve 3 is closed after the gas in the two spaces tends to be stable, and the pressure change of the gas in the two spaces can be obtained through the differential pressure sensor 11, so that the integral sealing performance of the built-in stop valve 9 of the measured meter is judged. And opening the stop valve 9 built in the measured meter and the stop valve 9-1 built in the standard meter, discharging the high-pressure gas in the detection loop, and recovering to the normal pressure.
When the ventilation function of the tested meter 10 needs to be detected, the air source air inlet valve 2, the left pressurizing valve 4, the right pressurizing valve 4-1 and the communicating valve 3 are closed, the built-in stop valve 9 of the tested meter is opened, the left ventilation valve 5 or the right ventilation valve 5-1 is opened according to the air flow direction of the tested meter, the left axial flow fan 6 or the right axial flow fan 6-1 is started, and ventilation air flow passes through the tested meter 10 to complete ventilation detection.
Claims (7)
1. A gas path system for checking gas meter tightness and ventilation detection is characterized by comprising a high-pressure gas source interface, a gas source air inlet valve, a communication valve, a left pressurizing valve, a right pressurizing valve, a left vent valve, a right vent valve, a left axial flow fan, a right axial flow fan, a standard end pressurizing valve, an exhaust valve, a measured meter and a standard meter, wherein the high-pressure gas source interface can be externally connected with a gas source, the high-pressure gas source interface is connected with the gas source air inlet valve through a gas pipe, the gas source air inlet valve is connected with the left pressurizing valve, the right pressurizing valve and the communication valve through gas pipes, the left pressurizing valve and the left vent valve are connected with a left gas port of the measured meter through gas pipes, the right pressurizing valve and the right vent valve are connected with a right gas port of the measured meter through gas pipes, the left vent valve is connected with the left fan through gas pipes, the right vent valve is connected with the right fan through gas pipes, and the communication valve is provided with a differential pressure sensor in parallel connection, one end of the communicating valve is connected with the air source air inlet valve, the left pressurizing valve and the right pressurizing valve, the other end of the communicating valve is connected with the standard end pressurizing valve, the standard end pressurizing valve is connected with a left air port of the standard meter through an air pipe, and the exhaust valve is connected with a right air port of the standard meter through an air pipe.
2. The gas circuit system for checking gas meter tightness and ventilation detection as claimed in claim 1, wherein a stop valve is arranged in the measured meter, and a stop valve is arranged in the standard meter.
3. The gas circuit system for checking gas meter tightness and ventilation detection as claimed in claim 2, wherein the high pressure gas source interface is connected to the left and right gas ports of the meter under test through gas pipes via a gas source inlet valve and a left and right pressurizing valve, and forms a gas circuit at the end under test for tightness detection with a stop valve built in the meter under test.
4. The gas circuit system for checking tightness and ventilation detection of a gas meter as claimed in claim 2, wherein the high pressure gas source interface is connected to a left gas port of the standard meter through a gas source inlet valve, a communication valve and a standard end pressurization valve through a gas pipe, and forms a standard end gas loop for tightness detection with a stop valve built in the standard meter.
5. The gas circuit system for checking gas meter tightness and vent detection as claimed in claim 2, wherein said communication valve is connected to one end of the differential pressure sensor through a left pressurizing valve and a right pressurizing valve, and the communication valve is connected to the other end of the differential pressure sensor through a standard end pressurizing valve and a standard meter, so as to form a pressure detection loop for tightness detection.
6. The gas circuit system for checking gas meter tightness and vent detection according to claim 2, wherein the left blower and the left vent valve, the right blower and the right vent valve and the measured meter form a gas circuit for vent detection.
7. The gas circuit system for checking tightness of gas meter and detecting ventilation as claimed in claim 2, wherein said exhaust valve forms an exhaust circuit for tightness detection with a standard meter, a standard end pressurizing valve, a communication valve, a left pressurizing valve, a right pressurizing valve and a meter under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123185634.3U CN216386185U (en) | 2021-12-17 | 2021-12-17 | Gas circuit system for checking gas meter sealing performance and ventilating detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123185634.3U CN216386185U (en) | 2021-12-17 | 2021-12-17 | Gas circuit system for checking gas meter sealing performance and ventilating detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216386185U true CN216386185U (en) | 2022-04-26 |
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ID=81236841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123185634.3U Active CN216386185U (en) | 2021-12-17 | 2021-12-17 | Gas circuit system for checking gas meter sealing performance and ventilating detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216386185U (en) |
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2021
- 2021-12-17 CN CN202123185634.3U patent/CN216386185U/en active Active
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