CN214173618U - Device for detecting pipeline pressure based on gas meter - Google Patents
Device for detecting pipeline pressure based on gas meter Download PDFInfo
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- CN214173618U CN214173618U CN202120550712.6U CN202120550712U CN214173618U CN 214173618 U CN214173618 U CN 214173618U CN 202120550712 U CN202120550712 U CN 202120550712U CN 214173618 U CN214173618 U CN 214173618U
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Abstract
The utility model discloses a device based on gas table carries out pipeline pressure detection relates to gas safety technical field. The gas meter base meter is internally provided with a first pressure sensor, the gas meter base meter is externally provided with a second pressure sensor, a microcontroller module on the controller is used for controlling the valve control module, and the pipeline pressure is obtained according to the difference value of data detected by the first pressure sensor and the second pressure sensor, so that whether overpressure or underpressure exists in the gas pipeline or not is judged, and the valve is cut off in time. The utility model discloses a set up two pressure sensor, the internal and external pressure value of real-time test gas table judges whether there is superpressure or the under-voltage condition in the gas pipeline according to inside and outside pressure differential value, in time closes the valve operation to ensure gas table safety in utilization.
Description
Technical Field
The utility model relates to a device based on gas table carries out pipeline pressure detection.
Background
The safe use of the gas meter is vital, the gas used by the user is conveyed into a gas pipeline through a pressure regulating device at present, and when the pressure regulating device is abnormal, the pipeline is under-voltage or over-voltage; the pipeline of the gas appliance is fallen off or damaged, so that the pipeline is under-voltage, and a gas safety accident is caused, so that the pressure of the gas pipeline needs to be detected, and the safety of using gas by a user is improved. One of the existing technical solutions is to install a differential pressure sensor in a gas meter, seal and connect gas through one end of the differential pressure sensor, and contact air through the other end of the differential pressure sensor, so as to detect the pressure difference between the gas and the air in a pipeline, and close a valve when the pressure of the pipeline is in an under-pressure state; if the pipeline pressure exceeds the pressure-resistant range of the differential pressure sensor, two ports of the differential pressure sensor can be punctured and conducted, and gas leakage is caused. In order to solve the leakage risk of the differential pressure sensor, another prior art scheme is to install an absolute pressure sensor in the gas safety valve, obtain an atmospheric pressure value at the initial stage of installation, subtract a fixed atmospheric pressure value from a pressure value obtained by the absolute pressure sensor during detection, namely the pressure value of the gas pipeline; however, the measured atmospheric pressure value is measured once, and the atmospheric pressure value is a quantity which dynamically changes along with the changes of temperature, season and weather conditions in practice, so that the gas pipeline pressure value obtained by the method has a large error.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a technical scheme of device that pipeline pressure detected carries out based on gas table.
The device for detecting the pipeline pressure based on the gas meter is characterized by comprising a first pressure sensor arranged in a gas meter base meter and a second pressure sensor arranged outside the gas meter base meter, wherein the first pressure sensor is used for detecting the gas pressure value in the gas meter base meter, and the second pressure sensor is used for detecting the atmospheric pressure value of the current environment of the gas meter; a controller is arranged outside the gas meter base meter and comprises a microcontroller module and a valve control module, the first pressure sensor and the second pressure sensor are both connected with the microcontroller module, and the valve control module is connected with a valve; the microcontroller module judges whether the gas pipeline has overpressure or underpressure conditions by detecting the data difference value of the first pressure sensor and the second pressure sensor, and controls the valve to close through the valve control module.
The device for detecting the pipeline pressure based on the gas meter is characterized in that the second pressure sensor is arranged on the controller.
The device for detecting the pipeline pressure based on the gas meter is characterized in that the first pressure sensor is arranged at the gas inlet and the gas outlet of the gas meter or at the position which can be contacted with the gas in the gas meter base.
The device for detecting the pipeline pressure based on the gas meter is characterized in that the first pressure sensor and the second pressure sensor adopt absolute pressure sensors.
The device for detecting the pipeline pressure based on the gas meter is characterized in that a wire outlet with a sealing function is formed in the gas meter base, and a lead of the first pressure sensor is led out from the wire outlet and is connected with a controller.
Compared with the prior art, the beneficial effects of the utility model are that: pressure sensors are respectively arranged on the gas meter base meter and the controller, and the second pressure sensor can obtain a dynamically changed atmospheric pressure value, so that the obtained pipeline pressure value is more accurate, the valve closing time can be further accurately judged, and the use safety of the gas meter is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-a first pressure sensor, 2-a second pressure sensor, 3-a base meter, 4-a controller, 5-a microcontroller module, 6-a valve control module, 7-a valve, 8-a remote communication module and 9-a background system.
Detailed Description
The invention will be further explained with reference to the drawings in the following description:
in order to solve the lower technical problem of pressure sensor detection pipeline pressure precision among the background art, the utility model provides a device based on gas table carries out pipeline pressure detection through the inside and outside pressure detection data of gas table, calculates the accurate pressure of current pipeline to ensure the safe handling of gas table.
The utility model discloses a first pressure sensor 1 that sets up in gas table base table 3 and the second pressure sensor 2 of setting outside gas table base table, the gas pressure value in first pressure sensor 1 detection gas table base table, the atmospheric pressure value of the current environment of gas table of second pressure sensor 2 detection, gas table base table is provided with controller 4 outward, the controller includes microcontroller module 5, valve control module 6 and remote communication module 8, first pressure sensor and second pressure sensor all link to each other with microcontroller module 5, valve control module 6 links to each other with valve 7; the microcontroller module judges whether the gas pipeline has overpressure or underpressure conditions by detecting the data difference value of the first pressure sensor and the second pressure sensor, and controls the valve to close through the valve control module.
In order to improve the detection accuracy, the first pressure sensor and the second pressure sensor may employ absolute pressure sensors.
For ease of installation, a second pressure sensor may be provided on the controller; the first pressure sensor can be arranged at a gas inlet and a gas outlet of the gas meter or at a position which can be contacted with the gas in the gas meter base meter, a wire outlet with a sealing function is formed in the gas meter base meter, and a lead of the first pressure sensor is led out from the wire outlet and is connected with the controller; the first pressure sensor can pass through I2The signal C transmits the acquired pressure data to the microcontroller module, the microcontroller module transmits the next relevant signal to the valve control module according to the pressure values of the first pressure sensor 1 and the second pressure sensor 2, and the valve control module directly controls the opening and closing state of the valve.
As shown in fig. 1, the pressure value measured by the first pressure sensor 1 in the meter is the gas pressure value in the gas meter base meter, and is marked as P1; the pressure value measured by the second pressure sensor 2 on the controller is the atmospheric pressure value of the current environment of the gas meter, which is marked as P2, and the value changes along with the change of the external environment and is a dynamic value. The method comprises the following steps that a microcontroller module obtains pressure values of a first pressure sensor 1 and a second pressure sensor 2 at intervals of a certain time, numerical values Pg = P1-P2 of pipeline pressure are obtained through gas pressure values P1 and P2, when Pg > PS, overpressure of a gas pipeline is indicated, the pipeline pressure is in an abnormal state at the moment, relevant signals are immediately transmitted to a valve control module through the microcontroller module, a valve closing instruction is executed by a valve, and abnormal information is transmitted to a background system through a remote communication module; if the pipeline pressure Pg is less than PX, it represents that the gas pipeline is under-pressure, and if the pipeline pressure is in abnormal state, the related signal is immediately transmitted to the valve control module through the microcontroller module, so that the valve executes the valve closing instruction, and the abnormal information is transmitted to the background system 9 through the remote communication module; wherein PS and PX represent the upper and lower pressure limits, respectively, that are preset by the microcontroller. The upper limit values of overpressure and underpressure of the pipeline are set differently under different use environments of residential users or commercial gas and the like, for example, the upper limit value PS of the pressure can be set to be 5kPa under the use environment of the residential users; referring to industry standards, when gas pressure is continuously detected to be lower than 0.4kPa, gas should be shut off, so PX may be set to 0.4kPa in this embodiment. Through the embodiment, the absolute pressure sensor is arranged in the base meter, so that the risk of gas leakage is reduced; an absolute pressure sensor is arranged on the controller, so that the external atmospheric pressure value can be tested in real time, and the calculated pipeline pressure value is more accurate; through setting up the critical value of reasonable superpressure or under-pressure for gas pressure just carries out the action of opening the valve only in normal range in the gas pipeline, with the gas safety of guaranteeing the user.
Claims (5)
1. A device for detecting pipeline pressure based on a gas meter is characterized by comprising a first pressure sensor arranged in a gas meter base meter and a second pressure sensor arranged outside the gas meter base meter, wherein the first pressure sensor is used for detecting the gas pressure value in the gas meter base meter, and the second pressure sensor is used for detecting the atmospheric pressure value of the current environment of the gas meter; a controller is arranged outside the gas meter base meter and comprises a microcontroller module and a valve control module, the first pressure sensor and the second pressure sensor are both connected with the microcontroller module, and the valve control module is connected with a valve; the microcontroller module judges whether the gas pipeline has overpressure or underpressure conditions by detecting the data difference value of the first pressure sensor and the second pressure sensor, and controls the valve to close through the valve control module.
2. The device for detecting the pressure of the pipeline based on the gas meter as claimed in claim 1, wherein the second pressure sensor is arranged on the controller.
3. The device for detecting the pressure of the pipeline based on the gas meter according to claim 1, wherein the first pressure sensor is installed at a gas inlet and a gas outlet of the gas meter or at a position which can be contacted with the gas in a base meter of the gas meter.
4. The device for detecting the pressure of the pipeline based on the gas meter as claimed in claim 1, wherein the first pressure sensor and the second pressure sensor are absolute pressure sensors.
5. The device for detecting the pressure of the pipeline based on the gas meter as claimed in claim 1, wherein the gas meter base is provided with an outlet with a sealing function, and a lead of the first pressure sensor is led out from the outlet and connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120550712.6U CN214173618U (en) | 2021-03-17 | 2021-03-17 | Device for detecting pipeline pressure based on gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120550712.6U CN214173618U (en) | 2021-03-17 | 2021-03-17 | Device for detecting pipeline pressure based on gas meter |
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| Publication Number | Publication Date |
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| CN214173618U true CN214173618U (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120550712.6U Active CN214173618U (en) | 2021-03-17 | 2021-03-17 | Device for detecting pipeline pressure based on gas meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560927A (en) * | 2022-08-12 | 2023-01-03 | 荣成市宇翔实业有限公司 | Gas leakage detection method and gas system |
| CN116379363A (en) * | 2023-04-10 | 2023-07-04 | 广州研测安全技术有限公司 | Remote valve closing device for gas leakage alarm |
| CN118090025A (en) * | 2024-04-28 | 2024-05-28 | 航宇星物联科技(辽宁)有限公司 | Intelligent gas meter pressure abnormality alarm detection and judgment method |
-
2021
- 2021-03-17 CN CN202120550712.6U patent/CN214173618U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560927A (en) * | 2022-08-12 | 2023-01-03 | 荣成市宇翔实业有限公司 | Gas leakage detection method and gas system |
| CN115560927B (en) * | 2022-08-12 | 2024-05-31 | 荣成市宇翔实业有限公司 | Gas leakage detection method and gas system |
| CN116379363A (en) * | 2023-04-10 | 2023-07-04 | 广州研测安全技术有限公司 | Remote valve closing device for gas leakage alarm |
| CN116379363B (en) * | 2023-04-10 | 2024-02-09 | 广州研测安全技术有限公司 | Remote valve closing device for gas leakage alarm |
| CN118090025A (en) * | 2024-04-28 | 2024-05-28 | 航宇星物联科技(辽宁)有限公司 | Intelligent gas meter pressure abnormality alarm detection and judgment method |
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