Gas meter and gas monitoring system

Abstract

The invention discloses a gas meter. The gas meter comprises a gas inlet, a gas outlet, a pressure detection module, a communication module and a control module. The gas inlet is formed in the front end of the gas meter, the gas outlet is formed in the rear end of the gas meter, and the gas inlet and the gas outlet are connected in a gas pipeline in series; the valve is arranged at a gas outlet of the gas meter; the pressure detection module is arranged at the front end of the valve, and after the valve is closed, the pressure detection module can still detect the pressure in the gas pipeline; the communication module is in communication connection with the remote monitoring platform; after the gas leakage alarm is received, the control module controls the valve to be closed, detects the pressure change in the gas pipeline and judges whether the pressure in the gas pipeline rises or not; the control module sends a first alarm signal or a second alarm signal to a remote monitoring platform through the communication module. The pressure change in the pipeline can be detected after the valve is closed, gas leakage at the front end or the rear end of the valve is identified, a corresponding alarm signal is sent out, and the accident handling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of instruments, and in particular to a gas meter and a gas system. Background Art

[0002] In the related art, for household gas, a valve is installed at the outlet of the household gas supply pipeline. After a gas leak is detected, the valve can be closed remotely and an alarm can be sounded.

[0003] If the leak is at the back end of the valve, closing the valve can temporarily solve the problem, giving the personnel enough time to deal with it. However, if the leak occurs at the front end of the valve, even closing the valve cannot solve the leak problem, and the personnel need to be notified as soon as possible to prevent greater losses.

[0004] In the related technology, it is impossible to determine whether the leakage occurs at the front end or the rear end of the valve, which poses a safety hazard. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, an object of the present invention is to provide a gas meter capable of determining the location of a gas leak and a gas monitoring system including the gas meter and an alarm.

[0006] To achieve the above object, the present invention provides a gas meter, comprising an air inlet and an air outlet, wherein the air inlet is arranged at the front end of the gas meter, and the air outlet is arranged at the rear end of the gas meter, and the air inlet and the air outlet of the gas meter are connected in series in a gas pipeline, and the gas meter further comprises:

[0007] Valve, which is arranged at the gas outlet of the gas meter;

[0008] The pressure detection module is arranged at the front end of the valve. After the valve is closed, the pressure detection module can still detect the pressure in the gas pipeline;

[0009] A communication module, the communication module is connected to the remote monitoring platform;

[0010] The control module controls the valve to close after receiving the gas leakage alarm, and detects the pressure change in the gas pipeline to determine whether the pressure in the gas pipeline rises. If so, it is determined that the gas pipeline at the rear end of the gas meter is leaking. If not, it is determined that the gas pipeline at the front end of the gas meter is leaking.

[0011] The control module also sends a first alarm signal or a second alarm signal to the remote monitoring platform through the communication module. The first alarm signal is generated when the control module determines that a leak occurs in the gas pipeline located at the rear end of the gas meter, and the second alarm signal is generated when the control module determines that a leak occurs in the gas pipeline located at the front end of the gas meter.

[0012] Furthermore, the pressure detection module increases the sampling frequency after the valve is closed;

[0013] The control module fits the pressure fluctuation condition in the gas pipeline according to the pipeline pressure data detected by the pressure detection module, and determines whether the pressure in the gas pipeline rises according to the pressure fluctuation condition.

[0014] Furthermore, the control module performs filtering processing on the pipeline pressure data before fitting the pipeline pressure data.

[0015] Furthermore, the communication module has remote transmission capability and can communicate directly with the remote monitoring platform;

[0016] The communication module is also connected to the alarm through short-range communication technology, and the alarm communicates with the remote monitoring platform through the communication module of the gas meter.

[0017] Furthermore, the communication module is also connected to the alarm through short-range communication technology. The alarm includes a remote transmission module. The communication module of the gas meter communicates with the remote monitoring platform through the remote transmission module of the alarm.

[0018] Furthermore, the pressure detection module includes a differential pressure sensor or an absolute pressure sensor.

[0019] The present application also provides a gas monitoring system, the system comprising the above gas meter and alarm;

[0020] The alarm is used to detect the gas concentration in the environment. When the gas concentration in the environment exceeds the preset threshold, the alarm will issue a gas leak alarm;

[0021] The gas meter closes the valve after receiving a gas leak alarm.

[0022] Furthermore, the system also includes a remote monitoring platform;

[0023] The remote monitoring platform is set with at least two accident levels. When the remote monitoring platform receives the first alarm signal, the remote monitoring platform classifies the current gas leakage as the first accident level. When the remote monitoring platform receives the second alarm signal, the remote monitoring platform classifies the current gas leakage as the second accident level. When a gas leakage accident of the second accident level occurs, the remote monitoring platform notifies the handling personnel to arrive at the gas leakage accident site within the specified time for disposal.

[0024] Furthermore, the remote monitoring platform records the pipeline pressure detected by the gas meter when there is no gas used. When the pipeline pressure is lower than the preset pressure threshold within a preset time range, the remote monitoring platform marks that the pipeline where the gas meter is located may have a leak and notifies the processing personnel to inspect the pipeline here.

[0025] Furthermore, the remote monitoring platform is also used to receive a request for permission to open the valve sent by the processing personnel. After the remote monitoring platform receives the request for permission to open the valve, the remote monitoring platform sends a valve opening instruction to the gas meter. The gas meter is allowed to open the valve only after receiving the valve opening instruction.

[0026] The gas meter provided by the present invention can detect the pressure change in the pipeline after closing the valve through the cooperation of the pressure detection module, the control module and the communication module, thereby identifying the gas leakage at the front end or rear end of the valve and issuing a corresponding alarm signal to improve the efficiency of handling accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the gas provided in the embodiment of the present application;

[0028] Figure 2 A flow chart of a gas leak detection method provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of a gas monitoring system provided in one embodiment of the present application;

[0030] Figure 4 A schematic diagram of a control flow of a gas monitoring system provided in one embodiment of the present application;

[0031] Figure 5 A schematic diagram of a gas monitoring system provided in accordance with another embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the specific implementation modes of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation modes of the present invention.

[0033] like Figure 1 As shown, the present application provides a gas meter 100, which includes an air inlet 11, an air outlet 12, a valve 13, a pressure detection module 14, a communication module 15 and a control module 16. The air inlet 11 is arranged at the front end of the gas meter 100, and the air outlet 12 is arranged at the rear end of the gas meter 100. The air inlet 11 and the air outlet 12 of the gas meter 100 are connected in series in the gas pipeline 200. The gas enters the gas meter 100 from the air inlet 11 of the gas meter 100, and then returns to the gas pipeline 200 through the air outlet 12 of the gas meter 100, so as to realize the metering of the gas supply by the gas meter 100.

[0034] As an optional implementation, after the gas meter 100 receives a gas leak alarm, the gas meter can control the valve 13 to close to stop the gas leak. It is understandable that, in the case of a leak in the gas pipeline 200 at the rear end of the gas meter 100, closing the valve 13 of the gas meter 100 can temporarily stop the gas leak, but if the gas pipeline 200 at the front end of the gas meter 100 leaks, for example, the gas pipeline is damaged, then the gas meter 100 closing the valve 13 cannot stop the gas leak, so it is necessary to quickly notify personnel to handle it.

[0035] As an optional implementation method, in an embodiment of the present application, after the gas meter 100 receives a gas leak alarm, the control module 16 controls the valve 13 to close, and detects the pressure change in the gas pipeline 200 to determine whether the pressure in the gas pipeline 200 has recovered. If so, it is determined that the gas pipeline 200 located at the rear end of the gas meter 100 has leaked. If not, it is determined that the gas pipeline 200 located at the front end of the gas meter 100 has leaked.

[0036] Specifically, the valve 13 is arranged near the gas outlet 12 of the gas meter 100, and the pressure detection module 14 is arranged at the front end of the valve 13, so that when the valve 13 is closed, the pressure detection module 14 can still detect the pressure change in the gas pipeline 200. If the pressure detection module 14 detects that the pressure in the gas pipeline 200 has not recovered, it means that the pipe section between the gas pipeline 200 and the valve 13 is damaged after the valve 13 is closed, and the gas can still escape from the damaged part, that is, it can be judged that the gas pipeline 200 at the front end of the gas meter 100 is leaking. If the pressure detection module 14 detects that the pressure in the gas pipeline 200 has recovered, it means that the pipe section between the gas pipeline 200 and the valve 13 forms a closed space after the valve 13 is closed, and the gas stops leaking, and then it can be judged that the gas leakage alarm may be caused by the leakage of the gas pipeline 200 at the rear end of the gas meter 100. In this way, the location of the gas leak can be determined.

[0037] As an optional implementation, the gas meter 100 in the embodiment of the present application can generate a first alarm signal according to the leakage of the gas pipeline 200 at the rear end of the gas meter 100, and can also generate a second alarm signal according to the leakage of the gas pipeline 200 at the front end of the gas meter 100. When a gas leak occurs, the gas meter 100 sends the first alarm signal or the second alarm signal to the remote monitoring platform according to the specific judgment situation, and the remote monitoring platform can notify the processing personnel to handle the gas leak situation. The processing personnel can determine the approximate location of the gas leak based on the received alarm signal and have some understanding of the emergency situation of the accident, thereby improving the efficiency of handling gas leak accidents.

[0038] Through the above arrangement, the user or maintenance personnel can check the gas meter 100 in time and handle it according to the specific situation of the gas meter 100, which greatly reduces the loss of the user and improves the efficiency of handling gas leakage accidents.

[0039] As an optional implementation method, the pressure detection module 14 increases the sampling frequency after closing the valve, and the control module 16 fits the pressure fluctuation condition in the gas pipeline 200 according to the pipeline pressure data detected by the pressure detection module 14, and determines whether the pressure in the gas pipeline 200 has recovered according to the pressure fluctuation condition.

[0040] like Figure 2 As shown, the gas meter 100 provided in the embodiment of the present application may include the following detection steps:

[0041] S11, the valve 13 is closed, and the pressure detection module 14 increases the frequency of pressure detection (due to power consumption considerations, the sampling frequency of pressure detection is generally low) to obtain multiple sets of pipeline pressure data. For example, the sampling frequency is increased to once per second within 30 seconds to obtain 30 sets of pressure data.

[0042] S12: The pressure detection module 14 performs filtering processing on the data.

[0043] S13, the pressure detection module 14 performs fitting based on the obtained pipeline pressure data to determine whether there is a pressure rising trend. If so, it is determined that the gas pipeline located at the rear end of the gas meter 100 is leaking. Otherwise, it is determined that the gas pipeline located at the front end of the gas meter 100 is leaking.

[0044] Through the above settings, when the gas meter is closed, the pressure detection module 14 can determine whether closing the valve can effectively stop gas leakage by sampling the pressure value in the gas pipeline 200, thereby avoiding the occurrence of continuous gas leakage. In addition, the control module 16 also performs filtering on the pipeline pressure data before fitting the pipeline pressure data, which can further avoid the interference of errors and ensure the safety of the user's processing process.

[0045] As an implementation method, the pressure detection module 14 includes a differential pressure sensor or an absolute pressure sensor, and both the differential pressure sensor and the pressure sensor can detect the pressure at both ends of the gas meter 100 and output the signal size. The setting of the pressure detection module 14 in the present application can meet the detection requirements of the gas meter 100 under different pressure conditions. The setting of the pressure detection module 14 can meet the detection requirements of the gas meter 100 when the pressure is relatively high, and can also meet the detection requirements of the gas meter 100 when the pressure change is relatively small. The pressure detection module 14 in the present application has a relatively wide range of applications.

[0046] like Figure 3As shown, the present application also provides a gas monitoring system 300, which includes a gas meter 100 and an alarm 400. The alarm 400 is used to detect the gas concentration in the environment. When the gas concentration in the environment exceeds a preset threshold, the alarm 400 issues a gas leak alarm. The gas meter 100 closes the valve 13 after receiving the gas leak alarm. In addition, the alarm 400 can prompt surrounding personnel that a gas leak accident has occurred here through a screen display or an alarm.

[0047] Through the above configuration, the alarm 400 cooperates with the gas meter 100, and the alarm 400 can generate an alarm signal to remind the user to deal with the accident in time. The gas meter 100 can close the valve in time to avoid more serious accidents.

[0048] As an implementation method, the gas monitoring system 300 also includes a remote monitoring platform 500, which is connected to the gas meter 100 and the alarm 400 for communication, and the remote monitoring platform 500 can remotely monitor the switch state of the valve 13 of the gas meter 100 and the alarm signal of the alarm 400. The control module 16 sends a first alarm signal or a second alarm signal to the remote monitoring platform 500 through the communication module 15. The first alarm signal is generated when the control module 15 determines that the gas pipeline 200 located at the rear end of the gas meter 100 leaks, and the second alarm signal is generated when the gas pipeline 200 located at the front end of the gas meter 100 leaks. The remote monitoring platform 500 is provided with at least two accident levels. When the remote monitoring platform 500 receives the first alarm signal, the remote monitoring platform 500 classifies the current gas leakage as the first accident level. When the remote monitoring platform 500 receives the second alarm signal, the remote monitoring platform 500 classifies the current gas leakage as the second accident level. When a gas leakage accident of the second accident level occurs, the remote monitoring platform 500 notifies the handling personnel to arrive at the gas leakage accident site within a specified time to handle the situation.

[0049] Specifically, when a gas leakage accident of the first accident level occurs, controlling the gas meter 100 to close the valve can temporarily stop the gas leakage, and the handling personnel can be notified to agree with the user on the time for on-site maintenance. When a gas leakage accident of the second accident level occurs, controlling the gas meter 100 to close the valve cannot temporarily stop the gas leakage, and gas still leaks from the gas pipeline 200. At this time, it is necessary to notify the handling personnel to arrive at the gas leakage accident site within the specified time to urgently handle the gas leakage accident. Through the above settings, the handling personnel can remotely and accurately determine the location of the gas leakage according to the accident level, and then determine the emergency situation of the accident, so as to reasonably arrange time to deal with the accident. At the same time, it also avoids more serious accidents due to negligence of personnel, thereby improving the safety of gas use.

[0050] like Figure 4 As shown, it shows a schematic diagram of the control process of the gas monitoring system. The control process of the gas monitoring system includes the following steps:

[0051] S21. The alarm 400 detects the gas concentration in the environment. When the gas concentration in the environment exceeds a preset threshold, the alarm 400 issues a gas leak alarm.

[0052] S22, the gas meter 100 closes the valve and detects the pipeline pressure data to determine whether the pipeline pressure is on the rise. If so, the gas meter 100 sends a first alarm signal to the remote monitoring platform 500, otherwise, it sends a second alarm signal to the remote monitoring platform 500.

[0053] S23. When the remote monitoring platform receives the first alarm signal, the remote monitoring platform classifies the current gas leakage as the first accident level. When the remote monitoring platform receives the second alarm signal, the remote monitoring platform classifies the current gas leakage as the second accident level. When a gas leakage accident of the second accident level occurs, the remote monitoring platform notifies the handling personnel to arrive at the gas leakage accident site within the specified time for disposal.

[0054] Through the above settings, when the alarm 400 detects a gas leak, the gas meter 100 can promptly determine whether the gas leak is at the front end or the rear end of the valve 13, and classify the accident levels of the two situations, quickly send a corresponding alarm signal to the user, and improve the efficiency of handling leakage alarm accidents.

[0055] like Figure 3 As shown, as an optional implementation method, the communication module 15 has remote transmission capability and can communicate directly with the remote monitoring platform 500. The communication module 15 is also connected to the alarm 400 through short-range communication technology, and the alarm 400 communicates with the remote monitoring platform 500 through the communication module 15 of the gas meter 100. Among them, the short-range communication technology can be wired or wireless such as Bluetooth, wifi, etc. When the alarm 400 detects a gas leak, the alarm 400 will interact with the gas meter 100 through Bluetooth or wired form to trigger the remote transmission module of the gas meter 100 to work, and then transmit the information to the remote monitoring platform 500.

[0056] Through the above configuration, the alarm 400 shares the remote transmission module of the gas meter 100, which can reduce the overall manufacturing cost of the monitoring system and enhance the rational use of resources.

[0057] like Figure 5As shown, as another optional implementation, the communication module 15 is connected to the alarm 400 through short-distance communication technology. The alarm 400 includes a remote transmission module, and the communication module 15 of the gas meter 100 communicates with the remote monitoring platform 500 through the remote transmission module of the alarm 400. When the alarm 400 detects a gas leak, it directly transmits information to the remote monitoring platform 500 through the remote transmission module, and at the same time interacts with the communication module 15 through short-distance communication technology to control the switch state of the valve 13.

[0058] Through the above configuration, the gas meter 100 shares the remote transmission module of the alarm 400 , which can reduce the power consumption of the gas meter 100 and the overall manufacturing cost of the monitoring system.

[0059] As an optional implementation, the remote monitoring platform 500 can record the pipeline pressure detected by the gas meter 100 when there is no gas. When the pipeline pressure is lower than the preset pressure threshold within the preset time range, the remote monitoring platform 500 marks that the pipeline where the gas meter 100 is located may have a leak, and notifies the processing personnel to inspect the pipeline. The preset time can be set according to actual needs, so as to avoid reducing the accuracy of the pipeline pressure data due to setting the preset time too long.

[0060] It is understandable that when there is no gas, the pressure in the gas pipeline 200 is maintained at a high level. If a leak occurs at this time, the pressure in the gas pipeline 200 will continue to decrease. In the case of a small leak in the gas pipeline, if the surrounding ventilation conditions are good, it is difficult for the indoor gas concentration to accumulate to the gas concentration that causes the alarm to sound. That is, although a gas leak occurs, the indoor gas concentration does not reach the alarm threshold, so the alarm will not sound. In the embodiment of the present application, by recording the pipeline pressure detected by the gas meter 100 when there is no gas, if the pipeline pressure is lower than the preset pressure threshold within a preset time range, the remote monitoring platform 500 marks that the pipeline where the gas meter 100 exists may have a leak, thereby improving the safety of gas use.

[0061] According to the above description, the remote monitoring platform 500 can actively monitor the pressure in the gas pipeline 200 to determine whether there is a possibility of gas leakage, and promptly feedback to the user to avoid continuous gas leakage. In addition, the remote monitoring platform 500 can also perform continuous monitoring for a period of time after closing the gas pipeline 200, which is conducive to improving maintenance efficiency.

[0062] As an optional implementation method, the remote monitoring platform 500 is also used to receive a request for allowing valve opening sent by the processing personnel. After the remote monitoring platform 500 receives the request for allowing valve opening, the remote monitoring platform 500 sends a valve opening instruction to the gas meter 100. The gas meter 100 is allowed to open the valve only after receiving the valve opening instruction.

[0063] Specifically, after the processing personnel complete the on-site maintenance, the remote processing personnel can send a request to allow the valve to be opened to the remote monitoring platform 500. After the remote monitoring platform 500 receives the request to allow the valve to be opened, the remote monitoring platform 500 sends a valve opening instruction to the gas meter 100. The gas meter 100 is allowed to open the valve only after receiving the valve opening instruction. Through the above settings, it can be prevented that the user opens the valve privately without completing the maintenance, ensuring the safety of gas use. In summary, the present application provides a gas meter 100 and a gas monitoring system 300, which can detect the pressure change in the gas pipeline 200 after closing the valve 13, and can identify whether the gas is leaking at the front end or the rear end of the valve 13, thereby improving the efficiency of handling accidents. In addition, the gas meter 100 and the alarm 400 share the remote transmission module, which can reduce costs.

[0064] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A gas meter, comprising an air inlet and an air outlet, wherein the air inlet is arranged at the front end of the gas meter, and the air outlet is arranged at the rear end of the gas meter, and the air inlet and the air outlet of the gas meter are connected in series in a gas pipeline, characterized in that: The gas meter also includes: A valve, wherein the valve is arranged at a gas outlet of the gas meter; A pressure detection module, which is arranged at the front end of the valve. After the valve is closed, the pressure detection module can still detect the pressure in the gas pipeline; A communication module, wherein the communication module is connected to the remote monitoring platform for communication; A control module, after receiving a gas leakage alarm, the control module controls the valve to close, and detects the pressure change in the gas pipeline to determine whether the pressure in the gas pipeline rises, if so, it is determined that the gas pipeline at the rear end of the gas meter is leaking, if not, it is determined that the gas pipeline at the front end of the gas meter is leaking; The control module also sends a first alarm signal or a second alarm signal to the remote monitoring platform through the communication module. The first alarm signal is generated when the control module determines that a leak occurs in the gas pipeline located at the rear end of the gas meter, and the second alarm signal is generated when the control module determines that a leak occurs in the gas pipeline located at the front end of the gas meter.

2. The gas meter according to claim 1, characterized in that: The pressure detection module increases the sampling frequency after closing the valve; The control module fits the pressure fluctuation condition in the gas pipeline according to the pipeline pressure data detected by the pressure detection module, and determines whether the pressure in the gas pipeline rises according to the pressure fluctuation condition.

3. The gas meter according to claim 2, characterized in that: The control module further performs filtering processing on the pipeline pressure data before fitting the pipeline pressure data.

4. The gas meter according to claim 1, characterized in that: The communication module has remote transmission capability and can directly communicate with the remote monitoring platform; The communication module is also connected to the alarm through short-range communication technology, and the alarm communicates with the remote monitoring platform through the communication module of the gas meter.

5. The gas meter according to claim 1, characterized in that: The communication module is also connected to the alarm through short-range communication technology. The alarm includes a remote transmission module. The communication module of the gas meter communicates with the remote monitoring platform through the remote transmission module of the alarm.

6. The gas meter according to claim 1, characterized in that: The pressure detection module includes a differential pressure sensor or an absolute pressure sensor.

7. A gas monitoring system, characterized in that: The system comprises a gas meter as claimed in any one of claims 1 to 6 and an alarm; The alarm is used to detect the gas concentration in the environment. When the gas concentration in the environment exceeds a preset threshold, the alarm sends a gas leak alarm; The gas meter closes the valve after receiving the gas leakage alarm.

8. The gas monitoring system according to claim 7, characterized in that: The system also includes a remote monitoring platform; The remote monitoring platform is provided with at least two accident levels. When the remote monitoring platform receives the first alarm signal, the remote monitoring platform classifies the current gas leakage as the first accident level. When the remote monitoring platform receives the second alarm signal, the remote monitoring platform classifies the current gas leakage as the second accident level. When a gas leakage accident of the second accident level occurs, the remote monitoring platform notifies the handling personnel to arrive at the gas leakage accident site within the specified time for handling.

9. The gas monitoring system according to claim 8, characterized in that: The remote monitoring platform records the pipeline pressure detected by the gas meter when there is no gas used. When the pipeline pressure is lower than the preset pressure threshold within a preset time range, the remote monitoring platform marks that the pipeline where the gas meter is located may have a leak and notifies the processing personnel to inspect the pipeline here.

10. The gas monitoring system according to claim 8, characterized in that: The remote monitoring platform is also used to receive a request for allowing valve opening sent by a processing personnel. After the remote monitoring platform receives the request for allowing valve opening, the remote monitoring platform sends a valve opening instruction to the gas meter. The gas meter allows the valve to be opened only after receiving the valve opening instruction.

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