Gas meter and gas system
By integrating flow monitoring and switch status monitoring modules in the gas meter and combining the judgment logic of the processing module, the problem of low accuracy in existing gas meters when monitoring uncontrolled flow is solved, achieving higher monitoring accuracy and user Security.
Patent Information
- Application Number
- CN202311076724.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-23
- Publication Date
- 2025-02-25
AI Technical Summary
When monitoring uncontrolled flow, existing gas meters usually ignore the current operating status of the gas-using equipment, resulting in a decrease in monitoring accuracy and affecting the user's gas-using safety and interests.
Design a gas meter, including valves, flow monitoring modules, switch monitoring modules, processing modules and alarm modules. By communicating with the gas-using equipment, the switching status of the valve and gas-using equipment is monitored, and an alarm is issued when it occurs.
Improve the accuracy of uncontrolled traffic monitoring, enhance user air safety, and reduce user losses due to misjudgment.
Smart Images
Figure CN119509629A_ABST
Abstract
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] Gas meters are used in gas pipelines to record the actual amount of gas used. When the valve is opened during use, a flow rate that is not controlled by the user may be generated, which is defined as uncontrolled flow. The cause of uncontrolled flow may be that the user opens the valve without turning off the gas-using equipment or that the gas meter itself has a device problem that causes mismeasurement. The generation of uncontrolled flow will affect the user's gas safety.
[0003] When monitoring the uncontrolled flow of a gas meter in the prior art, the current operating status of the on-site gas-using equipment is usually ignored, so that in some cases normal gas usage is judged as uncontrolled flow, reducing the accuracy of uncontrolled flow monitoring and affecting the interests of users. Summary of the invention
[0004] In order to solve the deficiencies of the prior art, the present invention aims to provide a gas meter and a gas system capable of improving the accuracy of uncontrolled flow monitoring.
[0005] To achieve the above object, the present invention adopts the following technical solution:
[0006] A gas meter for gas monitoring, characterized in that the gas meter comprises: a valve; a flow monitoring module for monitoring the gas flow condition flowing through the gas meter; a switch monitoring module, which is communicatively connected to a gas-using device and is used to monitor a switch state switching signal of the gas-using device; a processing module, which obtains a valve switching signal, and when the valve switches from a closed state to an open state, within a preset time, if the switch monitoring module does not receive the switch state switching signal of the gas-using device, and the flow monitoring module monitors the gas flow, then the processing module determines that an uncontrolled flow occurs; and an alarm module, and when the processing module determines that an uncontrolled flow occurs, the alarm module sends an alarm message.
[0007] Furthermore, the switch monitoring module is connected to at least two gas-consuming devices for monitoring the switch state switching signal of each gas-consuming device and monitoring the switch state of each gas-consuming device. In response to the valve switching from the closed valve state to the open valve state, the processing module obtains the gas flow status within a preset time, and obtains the switch state and switch state switching signal of each gas-consuming device. If it is detected that there is gas flow passing through the gas meter within the preset time, and the switch state switching signal of a certain gas-consuming device is not received, and the gas-consuming device is in the open state, it is determined that uncontrolled flow occurs.
[0008] Furthermore, the switch state switching signal includes a first switching signal and a second switching signal, wherein the first switching signal is a signal generated when the gas-using device switches from an open state to a closed state, and the second switching signal is a signal generated when the gas-using device switches from a closed state to an open state; in response to the valve switching from a closed state to an open state, if within a preset time, the switch monitoring module detects that at least part of the gas-using devices sends a first switching signal and the remaining gas-using devices remain in a closed state, the flow monitoring module continuously monitors whether there is still gas flow; if there is still gas flow, the processing module determines that the gas-using device is abnormal and uncontrolled flow occurs.
[0009] Furthermore, the processing module is also provided with a flow threshold. When the gas flow value monitored by the flow monitoring module is greater than or equal to the flow threshold, the processing module determines whether the gas flow is an uncontrolled flow.
[0010] Furthermore, in response to the valve switching from a closed state to an open state, the processing module obtains the gas flow status within a preset time, and obtains the switch status and switch status switching signal of all gas-using equipment; if any gas-using equipment is in the open state, but the gas flow is not monitored through the gas meter within the preset time, it is judged that an equipment abnormality has occurred and an alarm is issued.
[0011] Furthermore, the preset time is greater than 0 and less than or equal to 60S.
[0012] Furthermore, the gas meter also includes a gas-consuming equipment control module, which is connected to the gas-consuming equipment and is used to send a switch state switching signal to control the gas-consuming equipment to switch the switch state; in response to the valve being converted from an open valve state to a closed valve state, the gas-consuming equipment control module sends a switch state switching signal to control the gas-consuming equipment to close.
[0013] Furthermore, when the gas equipment control module sends a switch state switching signal to control the gas equipment to shut down, the switch monitoring module monitors the switch state of the gas equipment after switching. If any gas equipment is still in the on state, the processing module determines that the equipment is abnormal and controls the alarm module to issue an alarm.
[0014] Furthermore, a gas system comprises: a gas meter including a valve; gas-using equipment; a monitoring platform, wherein the monitoring platform is communicatively connected to the gas meter and the gas-using equipment respectively, and the monitoring platform is used to monitor the on-off state of the gas meter valve and the on-off state switching signal of the gas-using equipment; the monitoring platform is also used to obtain the valve switching signal, when the valve switches from a closed state to an open state, within a preset time, if the monitoring platform does not receive the on-off state switching signal of the gas-using equipment, and the gas meter detects the gas flow, the monitoring platform determines that uncontrolled flow occurs and issues an alarm message.
[0015] Furthermore, the monitoring platform is also used to send a switch state switching signal to control the gas-consuming equipment to switch the switch state; in response to the valve being converted from an open state to a closed state, the monitoring platform sends a switch state switching signal to control the gas-consuming equipment to shut down.
[0016] A gas meter and a gas system provided by the present invention can improve the accuracy of uncontrolled flow monitoring, thereby improving the gas use safety of users and safeguarding the interests of users. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of the gas meter of the present invention.
[0018] Figure 2 It is a flow chart of the gas meter of the present invention for determining the occurrence of uncontrolled flow.
[0019] Figure 3 Another schematic diagram of a flow chart of the gas meter of the present invention for determining the occurrence of uncontrolled flow.
[0020] Figure 4 It is a schematic diagram of a flow chart of a gas meter judging device abnormality according to the present invention.
[0021] Figure 5 Schematic diagram of the gas system of the present invention. DETAILED DESCRIPTION
[0022] 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.
[0023] like Figure 1 As shown, a gas meter 100 is used for gas monitoring. The gas meter 100 includes: a valve 11, a flow monitoring module 12, a switch monitoring module 13, a processing module 14 and an alarm module 15. The flow monitoring module 12 is used to monitor the gas flow condition flowing through the gas meter 100. The switch monitoring module 13 is connected to the gas-consuming device 200 for communication, and is used to monitor the switch state switching signal of the gas-consuming device 200. The processing module 14 obtains the valve 11 switching signal. When the valve 11 switches from the closed valve state to the open valve state, within the preset time, if the switch monitoring module 13 does not receive the switch state switching signal of the gas-consuming device 200, and the flow monitoring module 12 detects the gas flow, the processing module 14 determines that an uncontrolled flow occurs. When the processing module 14 determines that an uncontrolled flow occurs, the alarm module 15 sends an alarm message. Among them, the preset time can be set according to actual needs.
[0024] like Figure 2 As shown, specifically, the steps for the gas meter 100 to determine the occurrence of uncontrolled flow are as follows:
[0025] S1: Detect the state of the valve 11. When the processing module 14 obtains that the valve 11 is switched from the closed state to the open state, enter S2. If it is detected that the valve 11 is in other states, no processing is performed.
[0026] S2: Within the preset time, the flow monitoring module 12 detects that the gas flow enters S3.
[0027] S3: Determine whether the switch monitoring module 13 receives the switch state switching signal of the gas-using device 200. When the switch monitoring module 13 receives the switch state switching signal of the gas-using device 200, no processing is performed. When the switch monitoring module 13 does not receive the switch state switching signal of the gas-using device 200, it is determined that the uncontrolled flow situation occurs and enters S4.
[0028] S4: When the gas meter 100 determines that an uncontrolled flow occurs, the alarm module 15 sends an alarm message and issues an alarm prompt to the user.
[0029] Among them, in the present application, the preset time is greater than 0S and less than or equal to 60S, so as to avoid the preset time being set too long, which will reduce the accuracy of uncontrolled flow monitoring.
[0030] Through the above settings, the gas meter 100 can monitor the uncontrolled flow, avoid misjudgment of the uncontrolled flow caused by the normal gas use of the gas-using equipment, and improve the accuracy of the monitoring of the uncontrolled flow. In addition, through the setting of the alarm module 15, the gas meter 100 can immediately upload the occurrence of the uncontrolled flow to the user, which is conducive to the user or maintenance personnel to check the gas meter 100 and the gas-using equipment 200 in time, reducing the loss of the user.
[0031] As an implementation method, the switch monitoring module 13 is connected to at least two gas-consuming devices 200 for communication, and is used to monitor the switch state switching signal of each gas-consuming device 200, and monitor the switch state of each gas-consuming device 200. In response to the valve 11 switching from the closed valve state to the open valve state, the processing module 14 obtains the gas flow status within a preset time, and obtains the switch state and switch state switching signal of each gas-consuming device 200. If it is monitored that there is gas flow flowing through the gas meter 100 within the preset time, and the switch state switching signal of a gas-consuming device 200 is not received, and the gas-consuming device 200 is in the open state, it is determined that uncontrolled flow occurs.
[0032] like Figure 3 As shown, specifically, the steps for the gas meter 100 to determine the occurrence of uncontrolled flow are as follows:
[0033] S11: Detect the state of the valve 11. When the processing module 14 obtains that the valve 11 is switched from the closed state to the open state, it enters S12. If it is detected that the valve 11 is in other states, no processing is performed.
[0034] S12: If the flow monitoring module 12 detects the gas flow within the preset time, the process goes to S13.
[0035] S13: Determine whether the switch monitoring module 13 receives a switch state switching signal of the gas-consuming device 200 .
[0036] S14: When the switch monitoring module 13 receives the switch state switching signal of the gas-consuming device 200, it can be considered that the gas flow at this time is generated by the normal gas consumption of the gas-consuming device and no processing is required.
[0037] S15: When the switch monitoring module 13 does not receive the switch state switching signal of the gas-using device 200, it is determined that an uncontrolled flow occurs, and the switch state of the gas-using device 200 is obtained. If the gas-using device 200 is in the on state, it is determined that the uncontrolled flow occurs because the switch of the gas-using device 200 is in the on state. For example, in the last normal gas use process, the gas meter 100 is closed due to some reasons (such as arrears in gas fees) and the user forgets to close the gas-using device 200. If the gas meter 100 opens the valve again, the gas can pass directly from the gas-using device 200 to the outside world, resulting in uncontrolled flow.
[0038] If the gas-using device 200 is in the off state, it is determined that the gas meter 100 has an uncontrolled flow due to other problems such as problems with the device itself, for example, the gas meter 100 fails, or the switch signal used to determine the switch state of the gas-using device 200 is wrong, or the gas-using device itself leaks, or the pipeline leaks, etc.
[0039] Through the above settings, the user can determine whether uncontrolled flow occurs when the gas meter 100 switches from a closed valve state to an open valve state due to failure to shut down the user device, thereby narrowing the scope of the causes of the uncontrolled flow and improving the efficiency of maintenance, which is beneficial to safeguarding the interests of the user.
[0040] As an optional implementation, the switch state switching signal includes a first switching signal and a second switching signal, wherein the first switching signal is a signal generated when the gas-using device 200 switches from an open state to a closed state, and the second switching signal is a signal generated when the gas-using device 200 switches from a closed state to an open state. In response to the valve 11 switching from a closed state to an open state, if within a preset time, the switch monitoring module 13 detects that at least part of the gas-using devices 200 send the first switching signal and the remaining gas-using devices 200 remain in a closed state, it continuously monitors whether there is still gas flow, and if there is still gas flow, it is determined that the gas-using device 200 is abnormal and an uncontrolled flow occurs.
[0041] Through the above settings, the present application can actively detect the flow when the gas meter opens the valve to preliminarily determine whether there is a possibility of uncontrolled flow. In the case of uncontrolled flow, the on-off state of the gas-using equipment can be actively switched to make the gas-using equipment in a closed state, thereby avoiding the occurrence of uncontrolled flow. In addition, continuous monitoring can be performed for a period of time after the gas-using equipment is turned off to determine whether there is a fault in the gas-using equipment and ensure the safety of gas use.
[0042] As an implementation method, in response to the valve 11 switching from a closed state to an open state, the processing module 14 obtains the gas flow status within a preset time, and obtains the switch state and the switch state switching signal of any gas-using device 200 and any gas-using device 200 is in the open state. If any gas-using device 200 is in the open state, but the gas flow is not monitored flowing through the gas meter 100 within the preset time, it is determined that an equipment abnormality has occurred and an alarm is issued.
[0043] Specifically, when the valve 11 switches from the closed state to the open state, if the processing module receives that any gas-using device 200 is in the open state, but the processing module does not obtain the second switching signal, it may be that the user forgets to turn off the gas-using device 200, or the gas-using device 200 is faulty. At this time, it is detected whether there is flow. If there is flow, it can be determined that the user forgot to turn off the gas-using device 200. If there is no flow, it can be determined that the gas-using device 200 is faulty, which may be a switch state display fault, or it may be that the gas-using device 200 fails to send the second switching signal to the processing module.
[0044] When the valve 11 switches from the closed state to the open state, if the processing module receives that any gas-using device 200 is in the open state, and the processing module does not receive the first switching signal, the flow rate is detected at this time. If there is flow rate, it can be determined that the gas-using device 200 cannot be closed, and the gas-using device 200 has a fault and needs manual processing. If there is no flow rate, it can also be determined that the gas-using device 200 has a fault, the processing module cannot receive the first switching signal sent by the gas-using device 200, and manual maintenance is required.
[0045] As an implementation method, the processing module 14 is also provided with a flow threshold. When the gas flow value monitored by the flow monitoring module 12 is greater than or equal to the flow threshold, the processing module 14 determines whether the gas flow is an uncontrolled flow. By reasonably setting the flow threshold, it is possible to avoid misjudgment of the uncontrolled flow caused by pipe network fluctuations, improve the accuracy of the gas meter 100 in monitoring the uncontrolled flow, and facilitate the normal operation of the gas meter 100.
[0046] In this embodiment, the gas meter 100 also includes a gas-using equipment control module (not shown), which is connected to the gas-using equipment 200 and is used to send a switch state switching signal to control the gas-using equipment 200 to switch the switch state. In response to the valve 11 being switched from an open valve state to a closed valve state, the gas-using equipment control module sends a switch state switching signal to control the gas-using equipment 200 to close.
[0047] Through the above arrangement, when the gas meter valve 11 is closed, the gas-consuming device 200 that is still in the open state can be actively closed through the gas-consuming device control module, thereby avoiding the occurrence of uncontrolled flow when the gas meter valve 11 is opened again.
[0048] As an implementation method, when the gas-using equipment control module sends a switch state switching signal to control the gas-using equipment 200 to be turned off, the switch monitoring module 13 monitors the switch state of the gas-using equipment 200 after switching. If any gas-using equipment 200 is still in the on state, the processing module 14 determines that the equipment is abnormal, and the control alarm module 15 sends an alarm.
[0049] like Figure 4 Specifically, the steps for the gas meter 100 to determine the abnormality of the device are as follows:
[0050] S21: Detect the state of the valve 11. When the processing module 14 obtains that the valve 11 is switched from the open state to the closed state, the process proceeds to S22.
[0051] S22: The switch monitoring module 13 obtains the switch state of the gas-consuming device 200, and enters S23 when the gas-consuming device 200 is in the on state.
[0052] S23: The gas-consuming device control module sends a switch state switching signal to control the gas-consuming device 200 to shut down.
[0053] S24: The switch monitoring module 13 obtains the switch status of the gas-consuming device 200 again, and enters S25 when the gas-consuming device 200 is in the on state.
[0054] S25: The processing module 14 determines that the device is abnormal and controls the alarm module 15 to issue an alarm.
[0055] like Figure 5 As shown, the present application also provides a gas system 400, which includes a gas meter 100, a gas-using device 200 and a monitoring platform 300. The gas meter 100 includes a valve 11, and the monitoring platform 300 is respectively connected to the gas meter 100 and the gas-using device 200 for communication. The monitoring platform 300 can remotely monitor the switch state of the valve 11 of the gas meter 100 and the switch state switching signal of the gas-using device 200. The monitoring platform 300 is also used to obtain the valve 11 switching signal. When the valve 11 switches from the closed valve state to the open valve state, within a preset time, if the monitoring platform 300 does not receive the switch state switching signal of the gas-using device 200, and the gas meter 100 detects the gas flow, the monitoring platform 300 determines that an uncontrolled flow occurs and issues an alarm message.
[0056] The monitoring platform is also used to send a switch state switching signal to control the gas-using equipment to switch the switch state. Specifically, in response to the valve being switched from the open state to the closed state, the monitoring platform sends a switch state switching signal to control the gas-using equipment to close.
[0057] In summary, the present application provides a gas meter and a gas system 400, which can improve the accuracy of uncontrolled flow monitoring and can actively shut down gas-using equipment when the gas meter closes the valve, thereby improving the safety of gas use.
[0058] 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 for gas monitoring, characterized in that: The gas meter comprises: valve; A flow monitoring module, used to monitor the gas flow condition flowing through the gas meter; A switch monitoring module, which is in communication connection with the gas-consuming device and is used to monitor a switch state switching signal of the gas-consuming device; The processing module obtains a valve switching signal. When the valve is switched from a closed state to an open state, if the switch monitoring module does not receive a switch state switching signal of the gas-consuming device within a preset time, and the flow monitoring module detects a gas flow, the processing module determines that an uncontrolled flow occurs; The alarm module sends out an alarm message when the processing module determines that uncontrolled flow occurs.
2. The gas meter according to claim 1, characterized in that: The switch monitoring module is in communication connection with at least two gas-consuming devices, and is used to monitor the switch state switching signal of each gas-consuming device, and monitor the switch state of each gas-consuming device; In response to the valve being switched from a closed state to an open state, the processing module obtains the gas flow status within the preset time, and obtains the switch state and switch state switching signal of each gas-consuming device. If gas flow is monitored to flow through the gas meter within the preset time, and the switch state switching signal of a gas-using device is not received, and the gas-using device is in the on state, it is determined that uncontrolled flow occurs.
3. The gas meter according to claim 2, characterized in that: The switch state switching signal includes a first switching signal and a second switching signal, wherein the first switching signal is a signal generated when the gas-using device is switched from an open state to a closed state, and the second switching signal is a signal generated when the gas-using device is switched from a closed state to an open state; In response to the valve switching from a closed state to an open state, if within a preset time, the switch monitoring module detects that at least part of the gas-using equipment sends the first switching signal and the remaining gas-using equipment remains in a closed state, the flow monitoring module continuously monitors whether there is still gas flow; if there is still gas flow, the processing module determines that the gas-using equipment is abnormal and uncontrolled flow occurs.
4. The gas meter according to claim 3, characterized in that: The processing module is also provided with a flow threshold. When the gas flow value monitored by the flow monitoring module is greater than or equal to the flow threshold, the processing module determines whether the gas flow is an uncontrolled flow.
5. The gas meter according to claim 1, characterized in that: In response to the valve being switched from a closed state to an open state, the processing module obtains the gas flow status within the preset time, and obtains the switch status and switch status switching signal of all gas-consuming devices; If any gas-using device is in the on state, but the gas flow is not detected flowing through the gas meter within the preset time, it is determined that an equipment abnormality has occurred and an alarm is issued.
6. The gas meter according to any one of claims 1 to 5, characterized in that: The preset time is greater than 0 and less than or equal to 60S.
7. The gas meter according to claim 1, characterized in that: The gas meter further comprises a gas-consuming device control module, which is connected to the gas-consuming device and is used to send a switch state switching signal to control the gas-consuming device to switch the switch state; In response to the valve being switched from an open state to a closed state, the gas-consuming device control module sends the switch state switching signal to control the gas-consuming device to be closed.
8. The gas meter according to claim 7, characterized in that: When the gas-using equipment control module sends the switch state switching signal to control the gas-using equipment to shut down, the switch monitoring module monitors the switch state of the gas-using equipment after switching. If any gas-using equipment is still in the on state, the processing module determines that the equipment is abnormal and controls the alarm module to issue an alarm.
9. A gas system, characterized in that: The gas system comprises: Gas meters, including valves; Gas-using equipment; A monitoring platform, the monitoring platform is respectively connected to the gas meter and the gas-consuming equipment for communication, and the monitoring platform is used to monitor the switch state of the gas meter valve and the switch state switching signal of the gas-consuming equipment; The monitoring platform is also used to obtain the valve switching signal. When the valve switches from a closed state to an open state, within a preset time, if the monitoring platform does not receive the switch state switching signal of the gas-consuming equipment, and the gas meter monitors the gas flow, the monitoring platform determines that uncontrolled flow occurs and issues an alarm message.
10. The gas system according to claim 9, characterized in that: The monitoring platform is also used to send a switch state switching signal to control the gas-using equipment to switch the switch state; In response to the valve being switched from an open state to a closed state, the monitoring platform sends out the switch state switching signal to control the gas-consuming equipment to be closed.