CN209820562U - Gas meter detection device with temperature and pressure compensation - Google Patents
Gas meter detection device with temperature and pressure compensation Download PDFInfo
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- CN209820562U CN209820562U CN201920789441.2U CN201920789441U CN209820562U CN 209820562 U CN209820562 U CN 209820562U CN 201920789441 U CN201920789441 U CN 201920789441U CN 209820562 U CN209820562 U CN 209820562U
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Abstract
The utility model discloses a gas meter detection device with temperature and pressure compensation, which comprises a standard device and a high-low temperature alternating box, wherein a heat exchanger is arranged between the standard device and the high-low temperature alternating box; the detection device also comprises a compressed air source, a dryer and a pressure stabilizing tank, wherein the compressed air source is connected with the inlet end of the dryer, the outlet end of the dryer is connected with the inlet end of the pressure stabilizing tank through a pipeline, and the outlet end of the pressure stabilizing tank is connected with the inlet end of the high-low temperature alternating box through a pipeline; a pressure reducing valve is arranged on a pipeline between the pressure stabilizing tank and the high-low temperature alternating box; and the front end of the standard is provided with a pressure regulating valve. The utility model discloses an adjust relief pressure valve and pressure regulating valve and realize pressure regulation's function, carry out temperature regulation through high low temperature reversal case, satisfied the demand of each temperature point of gas table, the rethread etalon carries out gas table and detects, has realized the detection of gas table under different pressure and the temperature.
Description
Technical Field
The utility model relates to a gas table detection device technical field, especially a gas table detection device with temperature and pressure compensation.
Background
At present, gas meters used in the market are all ordinary gas meters, and have no temperature and pressure correction function, and the measurement of gas is detected under the condition that the standard atmospheric pressure and the ambient temperature are 20 ℃.
The traditional detection device is divided into a bell-type error detection table and a sonic nozzle type error detection table, the two devices work under the environment of 20 ℃, and detection is carried out according to the standard of 20 ℃ under the condition that the environment temperature is lower than or higher than 20 ℃, so that the detection is inaccurate; however, the minimum temperature fluctuation range of the gas meter with the temperature and pressure compensation functions is-10 ℃ to 40 ℃, so that the traditional detection equipment cannot meet the requirements of new products.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a detection apparatus of gas table with temperature and pressure compensation function, can adjust the pressure and the gas temperature that get into the gas table to satisfy different detection demands.
In order to solve the technical problem, the utility model adopts the following technical proposal.
The gas meter detection device with temperature and pressure compensation comprises a standard device for detecting the precision of a gas meter and a high-low temperature alternating box for adjusting the temperature range, wherein a heat exchanger for changing the temperature of the gas is arranged between the standard device and the high-low temperature alternating box; the detection device also comprises a compressed air source for providing fuel gas, a dryer for reducing the moisture of the fuel gas and a pressure stabilizing tank for storing the dried fuel gas, wherein the compressed air source is connected with the inlet end of the dryer; a pressure reducing valve for regulating gas pressure is arranged on a pipeline between the pressure stabilizing tank and the high-low temperature alternating tank; and the front end of the standard device is provided with a pressure regulating valve for regulating the flow of the inlet air.
According to the gas meter detection device with the temperature and pressure compensation function, the 3-station meter hanging frame compatible with the connectors of the M30 × 2, G11/4 and G3/4 gas meters is arranged in the high-low temperature alternating box.
Due to the adoption of the technical scheme, the utility model has the following technical progress.
The utility model discloses when the pressure of gas is greater than atmospheric pressure, adjust the gas pressure who gets into the gas table through adjusting the relief pressure valve, when the pressure of gas is less than atmospheric pressure, adjust the inlet flow through the adjusting pressure governing valve to realized pressure regulation's function, carry out temperature regulation through high low temperature reversal case, satisfied the demand of each temperature point of gas table, the rethread etalon carries out gas table and detects, the detection of gas table under different pressure and the temperature has been realized.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein: 1. the device comprises a standard device, 2 oil-free vacuum pumps, 3 heat exchangers, 4 high and low temperature alternating boxes, 5.3 station meter hanging frames, 6 pressure reducing valves, 7 compressed air sources, 8 dryers, 9 surge tanks and 10 pressure regulating valves.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The gas meter detection device with temperature and pressure compensation is structurally shown in figure 1 and comprises a standard device 1, an oil-free vacuum pump 2, a heat exchanger 3, a high-low temperature alternating box 4, a pressure reducing valve 6, a compressed air source 7, a dryer 8, a pressure stabilizing tank 9 and a pressure regulating valve 10. The standard device 1 is used for detecting the accuracy of a gas meter, the oil-free vacuum pump 2 is used for extracting gas, the heat exchanger 3 is used for changing the temperature of the gas, the high-low temperature alternating box 4 is used for adjusting the temperature range, the pressure reducing valve 6 is used for adjusting the pressure of the gas, the compressed air source 7 is used for providing the gas, the dryer 8 is used for reducing the moisture in the compressed gas, the pressure stabilizing tank 9 is used for storing the dried gas, and the pressure adjusting valve 10 is used for adjusting the air inlet flow. Compressed air source 7 is connected at the entrance point of desiccator 8, the exit end of desiccator 8 passes through the entrance point of pipe connection at surge tank 9, the exit end of surge tank 9 passes through the entrance point of pipe connection at high low temperature alternation case 4, the entrance point of high low temperature alternation case 4 is provided with heat exchanger 3, be provided with heat exchanger 3 between high low temperature alternation case 4 and the etalon 1, pressure regulating valve 10 sets up on the pipeline between etalon 1 and heat exchanger 3, the exit end of etalon 1 is connected on oil-free vacuum pump 2.
The temperature is adjusted through the high-low temperature alternating box 4, the heat exchanger 3 changes the temperature of the fuel gas entering the gas meter according to the temperature adjusted by the high-low temperature alternating box 4, the gas meter is detected by the standard device 1, the detection method of the standard device is the prior art, the detection method is disclosed in Chinese patent CN102928054B, the method for detecting the standard device is described in detail in the specification, and detailed description is not provided here. According to the detection requirements of each temperature point of the gas meter, the high-low temperature alternating box is adjusted, and then the corresponding gas temperature is adjusted to simulate a real environment, so that the metering error of the gas meter in each temperature environment is detected.
The pressure regulation is carried out through a pressure reducing valve 6 and a pressure regulating valve 10, and when the pressure of the gas is lower than the atmospheric pressure, the gas inlet flow is regulated through the pressure regulating valve 10 to control the pressure of the gas entering the gas meter; when the pressure of the gas is higher than the atmospheric pressure, the pressure of the gas entering the gas meter is adjusted by adjusting the pressure reducing valve 6. The positive pressure and the negative pressure are adjusted through the pressure adjusting valve 10 and the pressure reducing valve 6, so that the pressure adjustment of 60 kPa-130 KPa can be met, and the pressure adjustment of a pressure compensation function table can be met.
In order to realize the detection of different gas meters, a 3-station meter hanging frame 5 is arranged in the high-low temperature alternating box 4, and the three gas meter connectors of M30 × 2, G11/4 and G3/4 can be compatible, so that the detection device can be normally used in the extreme high-low temperature environment.
When the utility model is used, the gas meter is connected to the 3-station meter hanging frame according to the model of the gas meter, the compressed gas source provides compressed gas, the dryer removes moisture in the compressed gas and stores the compressed gas through the pressure stabilizing tank, and when the pressure of the gas is greater than the atmospheric pressure, the pressure of the gas entering the gas meter is adjusted through adjusting the pressure reducing valve; when the pressure of the fuel gas is smaller than the atmospheric pressure, the flow of the inlet gas is adjusted by adjusting the pressure adjusting valve, so that the function of adjusting the pressure is realized. The temperature is adjusted through the high-low temperature alternating box, the adjustable temperature range is-40 ℃ to 100 ℃, the requirements of each temperature point of the gas meter are met, the gas meter is detected through the standard device, and the detection of the gas meter under different pressures and temperatures is realized.
Claims (2)
1. The gas meter detection device with temperature and pressure compensation comprises a standard device (1) for detecting the precision of a gas meter and a high-low temperature alternating box (4) for adjusting the temperature range, wherein a heat exchanger (3) for changing the temperature of the gas is arranged between the standard device (1) and the high-low temperature alternating box (4); the method is characterized in that: the detection device further comprises a compressed air source (7) for providing fuel gas, a dryer (8) for reducing moisture of the fuel gas and a pressure stabilizing tank (9) for storing the dried fuel gas, wherein the compressed air source (7) is connected to the inlet end of the dryer (8), the outlet end of the dryer (8) is connected to the inlet end of the pressure stabilizing tank (9) through a pipeline, and the outlet end of the pressure stabilizing tank (9) is connected to the inlet end of the high-low temperature alternating box (4) through a pipeline; a pressure reducing valve (6) for adjusting gas pressure is arranged on a pipeline between the pressure stabilizing tank (9) and the high-low temperature alternating tank (4); the front end of the standard device (1) is provided with a pressure regulating valve (10) for regulating the flow of the inlet air.
2. The gas meter detection device with temperature and pressure compensation function according to claim 1, wherein: and a 3-station meter hanging frame (5) compatible with three gas meter connectors of M30 x 2, G11/4 and G3/4 is arranged in the high-low temperature alternating box (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789441.2U CN209820562U (en) | 2019-05-29 | 2019-05-29 | Gas meter detection device with temperature and pressure compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920789441.2U CN209820562U (en) | 2019-05-29 | 2019-05-29 | Gas meter detection device with temperature and pressure compensation |
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| Publication Number | Publication Date |
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| CN209820562U true CN209820562U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920789441.2U Active CN209820562U (en) | 2019-05-29 | 2019-05-29 | Gas meter detection device with temperature and pressure compensation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013928A (en) * | 2020-08-27 | 2020-12-01 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Gas meter temperature/pressure adaptability integrated detection device and method |
| CN113405585A (en) * | 2021-06-03 | 2021-09-17 | 河北华通燃气设备有限公司 | Temperature and pressure sensor detection system for gas meter |
| CN118010120A (en) * | 2024-04-10 | 2024-05-10 | 成都锦城学院 | Flow monitoring device |
-
2019
- 2019-05-29 CN CN201920789441.2U patent/CN209820562U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112013928A (en) * | 2020-08-27 | 2020-12-01 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Gas meter temperature/pressure adaptability integrated detection device and method |
| CN113405585A (en) * | 2021-06-03 | 2021-09-17 | 河北华通燃气设备有限公司 | Temperature and pressure sensor detection system for gas meter |
| CN118010120A (en) * | 2024-04-10 | 2024-05-10 | 成都锦城学院 | Flow monitoring device |
| CN118010120B (en) * | 2024-04-10 | 2024-06-21 | 成都锦城学院 | Flow monitoring device |
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