Gas pressure regulator maintenance diagnosis method and system

Abstract

The application provides a gas pressure regulator maintenance diagnosis method and system, which performs safety detection on each protection device in the gas pressure regulator, the safety detection including diffusion valve detection and cut-off valve detection; in response to the diffusion valve detection, a diffusion pressure curve after the gas pump charges the diffusion valve to be closed is acquired, a pressure detection strategy is called to detect the pressure value of the diffusion pressure curve, and a sealing detection result is obtained; in response to the cut-off valve detection, a cut-off pressure curve after the gas pump charges the cut-off valve is acquired, a feedback detection strategy is called to detect the feedback of the cut-off pressure curve, and a cut-off detection result is obtained; and early warning information is generated according to the sealing detection result and / or the cut-off detection result and is sent to a maintenance end, so that the accuracy and timeliness of the maintenance of the gas pressure regulator are greatly improved, and the maintenance cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to data processing technology, and more particularly to a method and system for maintenance and diagnosis of gas pressure regulators. Background Technology

[0002] Gas pressure regulators are crucial safety devices in gas supply systems. They adjust high-pressure gas to low-pressure gas suitable for users, ensuring a stable and safe gas supply. Therefore, maintaining and managing gas pressure regulators is essential for ensuring the normal operation of the gas supply.

[0003] In existing technologies, traditional voltage regulator maintenance requires maintenance personnel to bring testing tools to the site for inspection and data recording. This operation requires at least two people and demands a high level of skill from the maintenance personnel. This maintenance process is quite time-consuming, and the accuracy of the data cannot be guaranteed. Data analysis cannot be performed in a timely manner, thus hindering timely maintenance.

[0004] Therefore, how to quickly and accurately calculate the data from gas pressure regulator testing to determine whether the tested equipment meets the requirements, perform automatic diagnosis, and output diagnostic results has become an urgent problem to be solved. Summary of the Invention

[0005] This invention provides a method and system for the maintenance and diagnosis of gas pressure regulators. It can quickly and accurately calculate the data information of gas pressure regulator testing to determine whether the tested equipment meets the requirements, perform automatic diagnosis, and output diagnostic results, which greatly improves the accuracy and timeliness of gas pressure regulator maintenance and effectively reduces maintenance costs.

[0006] A first aspect of the present invention provides a maintenance and diagnostic method for a gas pressure regulator, comprising: Safety tests are performed on all protective devices in the gas pressure regulator, including tests on the vent valve and the shut-off valve. In response to the vent valve detection, the vent pressure curve after the air pump pressurizes and closes the vent valve is obtained, and the pressure detection strategy is retrieved to detect the pressure value of the vent pressure curve to obtain the sealing detection result. The system responds to the shut-off valve detection, acquires the shut-off pressure curve after the air pump pressurizes the shut-off valve, retrieves the feedback detection strategy to perform feedback detection on the shut-off pressure curve, and obtains the shut-off detection result. Based on the sealing test results and / or the cutting test results, an early warning message is generated and sent to the maintenance terminal.

[0007] Optionally, in one possible implementation of the first aspect, the response to the vent valve detection, acquiring the vent pressure curve after the air pump pressurizes and closes the vent valve, and retrieving a pressure detection strategy to detect the pressure value of the vent pressure curve to obtain a sealing detection result, includes: The system responds to the vent valve detection, obtains the vent pressure curve after the air pump pressurizes and closes the vent valve, and uses the corresponding time after the air pump pressurizes and closes the vent valve as the closing time. The termination time is determined based on the preset detection duration and the closing time, and the intermediate time is obtained based on the termination time and the closing time; The pressure value of the release pressure curve is detected based on the closing time, the intermediate time, and the termination time to obtain the sealing test result.

[0008] Optionally, in one possible implementation of the first aspect, the step of detecting the pressure value of the venting pressure curve based on the closing time, the intermediate time, and the termination time to obtain the sealing test result includes: The initial pressure value at the closing time in the venting pressure curve, the intermediate pressure value at the intermediate time in the venting pressure curve, and the termination pressure value at the termination time in the venting pressure curve are obtained. A first judgment value is obtained based on the difference between the initial pressure value and the intermediate pressure value, and a second judgment value is obtained based on the difference between the intermediate pressure value and the final pressure value. When the first judgment value is greater than or equal to the preset judgment value and / or the second judgment value is greater than or equal to the preset judgment value, a sealing abnormality result is generated; When it is determined that the first judgment value is less than the preset judgment value and the second judgment value is less than the preset judgment value, the pressure change value is obtained based on the difference between the initial pressure value and the termination pressure value; If the pressure change value is greater than the preset change value, a sealing abnormality result is generated.

[0009] Optionally, in one possible implementation of the first aspect, the response to the shut-off valve detection, acquiring the shut-off pressure curve after the air pump pressurizes the shut-off valve, and retrieving the feedback detection strategy to perform feedback detection on the shut-off pressure curve to obtain the shut-off detection result, includes: The shut-off valve is detected, and the shut-off pressure curve after the air pump pressurizes the shut-off valve is obtained, as well as the time when the shut-off valve performs the shut-off action, are used as the shut-off time. The pressure value at the cutting moment in the cutting pressure curve is extracted as the cutting pressure value, and the maximum pressure value in the cutting pressure curve is also extracted. When it is determined that the cutting pressure value is not equal to the maximum pressure value, the time feedback strategy is invoked to perform feedback detection on the cutting pressure curve to obtain the cutting detection result; When the cut-off pressure value is determined to be equal to the maximum pressure value, the rate feedback strategy is invoked to perform feedback detection on the cut-off pressure curve to obtain the cut-off detection result. The feedback detection strategy includes a time feedback strategy and a rate feedback strategy.

[0010] Optionally, in one possible implementation of the first aspect, when it is determined that the cutting pressure value is not equal to the maximum pressure value, invoking a time feedback strategy to perform feedback detection on the cutting pressure curve to obtain a cutting detection result includes: When it is determined that the cutting pressure value is not equal to the maximum pressure value, the moment when the maximum pressure value is in the cutting pressure curve is obtained as the comparison moment; The time feedback value is obtained based on the difference between the comparison time and the cutting time corresponding to the cutting pressure value; If the time feedback value is greater than 2 seconds, a cutoff anomaly result is generated.

[0011] Optionally, in one possible implementation of the first aspect, if the time feedback value is less than or equal to 2s, a normal cut-off result is generated, and the cut-off detection result includes both an abnormal cut-off result and a normal cut-off result.

[0012] Optionally, in one possible implementation of the first aspect, when the cut-off pressure value is determined to be equal to the maximum pressure value, a rate feedback strategy is invoked to perform feedback detection on the cut-off pressure curve to obtain a cut-off detection result, including: When the cutting pressure value is determined to be equal to the maximum pressure value, the time 1 second after the cutting time is taken as the first time, the time 2 seconds after the cutting time is taken as the second time, and the time 3 seconds after the cutting time is taken as the third time. The pressure value at the first moment in the cutting pressure curve is extracted as the first pressure value, the pressure value at the second moment in the cutting pressure curve is extracted as the second pressure value, and the pressure value at the third moment in the cutting pressure curve is extracted as the third pressure value. A first pressure difference is obtained based on the absolute value of the difference between the second pressure value and the first pressure value, and a second pressure difference is obtained based on the absolute value of the difference between the second pressure value and the third pressure value. The difference change value is obtained based on the difference between the first pressure difference value and the second pressure difference value, and the rate feedback value is obtained based on the ratio of the difference change value to the first pressure difference value. If the rate feedback value is greater than the preset rate value, a cutoff anomaly result is generated.

[0013] Optionally, in one possible implementation of the first aspect, if the rate feedback value is less than or equal to a preset rate value, a normal cutoff result is generated, and the cutoff detection result includes an abnormal cutoff result and a normal cutoff result.

[0014] Optionally, in one possible implementation of the first aspect, the step of generating early warning information based on the sealing detection result and / or the cutting-off detection result and sending it to the maintenance terminal includes: When the sealing test result is determined to be a sealing abnormality and / or the cutting test result is a cutting abnormality, an early warning message is generated and sent to the maintenance terminal; The maintenance team replaces the corresponding protection equipment based on the warning information.

[0015] A second aspect of the present invention provides a gas pressure regulator maintenance and diagnostic system, comprising: The detection module is used to perform safety tests on various protective devices in the gas pressure regulator, including vent valve detection and shut-off valve detection. The retrieval module is used to respond to the vent valve detection, acquire the vent pressure curve after the air pump pressurizes and closes the vent valve, retrieve the pressure detection strategy to detect the pressure value of the vent pressure curve, and obtain the sealing detection result. The feedback module is used to respond to the shut-off valve detection, obtain the shut-off pressure curve after the air pump pressurizes the shut-off valve, retrieve the feedback detection strategy to perform feedback detection on the shut-off pressure curve, and obtain the shut-off detection result. The sending module is used to generate early warning information based on the sealing detection result and / or the cutting detection result and send it to the maintenance terminal.

[0016] A third aspect of the present invention provides an electronic device, comprising: a memory, a processor, and a computer program, wherein the computer program is stored in the memory, and the processor executes the computer program to perform the methods described in the first aspect of the present invention and various possible methods related to the first aspect.

[0017] A fourth aspect of the present invention provides a storage medium storing a computer program, which, when executed by a processor, is used to implement the first aspect of the present invention and various methods possibly involved in the first aspect.

[0018] The beneficial effects of this invention are as follows: 1. This invention enables rapid and accurate calculation of data from gas pressure regulator testing to determine whether the tested equipment meets requirements, performs automatic diagnosis, and outputs diagnostic results. This significantly improves the accuracy and timeliness of gas pressure regulator maintenance, effectively reducing maintenance costs. First, this invention acquires the venting pressure curve and the cut-off pressure curve. It then uses a pressure detection strategy to detect the pressure value of the venting pressure curve, obtaining a sealing test result. Next, it uses a feedback detection strategy to perform feedback detection on the cut-off pressure curve, obtaining a cut-off test result. Automatic diagnosis is then performed, and diagnostic results are output, improving the timeliness of gas pressure regulator maintenance and effectively reducing repair time costs.

[0019] 2. This invention can automatically analyze the corresponding pressure curves obtained, making the calculation results more accurate, ensuring the accuracy of the maintenance results, and improving the maintenance efficiency of maintenance personnel. First, this invention obtains the corresponding closing time, termination time, and intermediate time through sensors and the release pressure curve. Second, it obtains the corresponding pressure value based on the corresponding time, and then quickly calculates the corresponding first judgment value and second judgment value. When the first judgment value and / or the second judgment value is greater than or equal to the preset judgment value, a sealing abnormality result is generated. When the first judgment value and the second judgment value are less than the preset judgment value, the corresponding pressure change value is calculated, thereby automatically determining the detection result of the release valve. Similarly, this invention automatically determines whether the cut-off pressure value in the cut-off pressure curve is equal to or not equal to the maximum pressure value, and then calls the corresponding feedback strategy for feedback detection. When the cut-off pressure value is not equal to the maximum pressure value, the time feedback value is calculated based on the cut-off pressure curve. When the time feedback value is greater than 2 seconds, a cut-off abnormality result is generated. When the cut-off pressure value is equal to the maximum pressure value, the pressure value at the corresponding time is obtained based on the cut-off pressure curve, thereby calculating the rate feedback value, and thus obtaining the corresponding cut-off detection result. Through automatic analysis and calculation of the data in the cut-off pressure curve, the accuracy and timeliness of the diagnostic results are improved.

[0020] 3. This invention can generate early warning information based on the detection results and send it to the maintenance terminal, so that maintenance personnel can intuitively receive the corresponding early warning information and replace or repair the corresponding components in a timely manner to ensure the normal operation of the gas pressure regulator. Attached Figure Description

[0021] Figure 1 A schematic diagram of the gas pressure regulator maintenance and diagnostic device for the technical solution provided by the present invention; Figure 2 A flowchart of a gas pressure regulator maintenance and diagnostic method provided by the present invention; Figure 3 A schematic diagram of a relief pressure curve provided by the present invention; Figure 4A schematic diagram of a cutting pressure curve provided by the present invention; Figure 5 This is a schematic diagram of the structure of a gas pressure regulator maintenance and diagnostic system provided by the present invention; Figure 6 This is a schematic diagram of the hardware structure of an electronic device provided by the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0024] It should be understood that in the various embodiments of the present invention, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0025] It should be understood that in this invention, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0026] It should be understood that in this invention, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains A, B, and C", "Contains A, B, and C" means that all three A, B, and C are contained; "Contains A, B, or C" means that one of A, B, and C is contained; "Contains A, B, and / or C" means that any one, two, or three of A, B, and C are contained.

[0027] It should be understood that in this invention, "B corresponding to A", "B corresponding to A", "A and B correspond", or "B and A correspond" means that B is associated with A, and B can be determined based on A. Determining B based on A does not mean determining B solely based on A; B can also be determined based on A and / or other information. Matching A and B is defined as a similarity between A and B that is greater than or equal to a preset threshold.

[0028] Depending on the context, "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection."

[0029] The technical solution of the present invention will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0030] like Figure 1 The diagram shows a gas pressure regulator maintenance and diagnostic device according to the technical solution provided by this invention. The device includes a sampling mechanism, a display mechanism, a communication mechanism, a pressurization mechanism, and a voice mechanism. The communication circuit uses a 485 circuit. Pressure values ​​are acquired using a 0.5-level pressure sensor and converted into a 4-20mA current. This current is then converted to a digital value via a 12-bit high-precision AD converter and displayed on an LCD screen. The sampling mechanism is implemented by a sampling circuit with a 4-20mA interface. The display mechanism uses an LCD display with a resolution of two decimal places and a display unit of kPa. When pressure is detected, the display has a self-locking function and displays the final test value for verification. The communication mechanism uses a Bluetooth circuit to transmit data between the device and a mobile phone. The system transmits data via 4G signal to the mobile phone, allowing for real-time data transfer. The Bluetooth circuit samples data at a millisecond frequency (once every 100 milliseconds), collecting 600 data points per minute. This data is displayed in real-time via curves, ensuring accuracy and continuity and providing strong data support for diagnostic analysis and calculation. The LCD display shows the battery voltage, preventing malfunctions due to insufficient power. The pressurization mechanism includes a DC air pump with a throttle valve on the panel for precise pressure adjustment. The pressure value is displayed for maintenance personnel. A voice prompt mechanism provides voice guidance when maintenance personnel set pressure values ​​via Bluetooth using a mobile app.

[0031] like Figure 2 As shown, the present invention provides a maintenance and diagnostic method for a gas pressure regulator, including steps S1-S4: S1, Perform safety tests on each protection device in the gas pressure regulator, including tests on the vent valve and the shut-off valve.

[0032] It should be noted that the vent valve and shut-off valve are two important safety protection devices in a gas pressure regulator. The vent valve mainly ensures that the pressure in the gas pipeline does not exceed the specified value. When the gas pressure exceeds the set value, the valve automatically opens to release the excess gas, thereby ensuring the safe operation of pipelines, equipment, and appliances. In addition, the vent valve can also effectively prevent pipeline damage caused by overpressure, thus maintaining the stability and safety of the gas system. The shut-off valve's main function is to automatically cut off the gas supply immediately when the outlet pressure of the gas pressure regulator rises or falls for any reason and reaches the shut-off valve's set start pressure, protecting downstream equipment from damage. Therefore, in daily maintenance, it is necessary to check whether its shut-off function is normal to ensure that it can work properly.

[0033] It is understood that the present invention is to perform safety tests on various protective devices in a gas pressure regulator, and the safety tests include tests on the vent valve and the shut-off valve.

[0034] Among them, the diverging valve test is the test of the diverging valve in the gas pressure regulator, and the shut-off valve test is the test of the shut-off valve in the gas pressure regulator.

[0035] Through the above embodiments, the present invention performs safety testing on the diverging valve and the shut-off valve to ensure the normal operation of the gas pressure regulator, thereby ensuring the stability and safety of the gas supply.

[0036] S2, respond to the vent valve detection, obtain the vent pressure curve after the air pump pressurizes and closes the vent valve, retrieve the pressure detection strategy to detect the pressure value of the vent pressure curve, and obtain the sealing detection result.

[0037] It should be noted that, in order to accurately calculate the pressure value of the gas pressure regulator and achieve automatic diagnosis to determine whether the divergence valve meets the requirements, the present invention can continuously measure the pressure value of the divergence valve at different times by a sensor, generate a corresponding divergence pressure curve based on the measured pressure value, and then use a pressure detection strategy to judge the seal based on the divergence pressure curve.

[0038] Understandably, in response to the vent valve detection, the vent pressure curve after the air pump pressurizes and closes the vent valve is obtained, and the pressure detection strategy is used to detect the pressure value of the vent pressure curve to obtain the sealing detection result.

[0039] Among them, the divergence pressure curve is the curve corresponding to the pressure value of the divergence valve, and the sealing test result is the result of the sealing test of the vent valve.

[0040] For example: Figure 3 As shown, the divergent pressure curve contains continuous divergent pressure values ​​and corresponds one-to-one with each moment of the detection.

[0041] Through the above embodiments, the present invention can detect continuous pressure values, thereby accurately calculate the corresponding detection results, and automatically diagnose and obtain sealing detection results, which greatly improves the accuracy and timeliness of gas pressure regulator maintenance and effectively reduces maintenance costs.

[0042] In some embodiments, step S2 (the response to the vent valve detection, obtaining the vent pressure curve after the air pump pressurizes and closes the vent valve, retrieving the pressure detection strategy to detect the pressure value of the vent pressure curve, and obtaining the sealing detection result) includes steps S21-S23: S21, respond to the vent valve detection, obtain the vent pressure curve after the air pump pressurizes and closes the vent valve, and use the corresponding time after the air pump pressurizes and closes the vent valve as the closing time.

[0043] It should be noted that during on-site maintenance, the pressure tap of this device should be connected to the pressure testing valve of the vent pipe. The device can be connected via Bluetooth using a mobile app to start measuring the pressure of the vent pipe. First, the air pump is turned on to pressurize the vent pipe until the vent valve opens. Second, in order to check whether the vent valve is properly sealed, the vent valve needs to be opened for a period of time and then the air pump is turned off to detect the change in vent pressure during this period. Finally, after a period of time, a set of continuous pressure curves can be obtained. Then, the vent valve can be analyzed and judged based on the obtained pressure curves.

[0044] It is easy to understand that the sealing of the relief valve is judged by measuring the relief pressure curve. When analyzing the relief pressure curve, it is necessary to determine the corresponding time, so that the moment when the air pump pressurizes and closes the relief valve is taken as the closing time.

[0045] It is understandable that, in response to the vent valve detection, the vent pressure curve after the air pump pressurizes and closes the vent valve, as well as the corresponding time after the air pump pressurizes and closes the vent valve, are obtained, and the time when the air pump closes is taken as the closing time.

[0046] Among them, pressurization refers to the act of using an air pump to pressurize the vent valve.

[0047] For example: if the obtained venting pressure curve and the time corresponding to the air pump pressurizing and closing the venting valve are 14:34:02, then 14:34:02 will be taken as the closing time.

[0048] Through the above embodiments, the present invention can obtain the corresponding time when the air pump is shut down, which facilitates subsequent pressure value detection of the release pressure curve, thereby obtaining the corresponding sealing test results.

[0049] S22, determine the termination time based on the preset detection duration and the closing time, and obtain the intermediate time based on the termination time and the closing time.

[0050] It should be noted that the valve rebound and closes after a certain period of time. Therefore, when testing the pressure value of the vent valve, the testing time needs to be preset. At the same time, in the subsequent process of obtaining the sealing test results, it is necessary to judge the changing trend of the vent pressure curve. Then, the midpoint of the corresponding pressure value testing process will be obtained based on the termination time and the closing time.

[0051] Understandably, the corresponding termination time can be determined based on the preset detection duration and the closing time, and the intermediate time can be obtained based on the termination time and the closing time.

[0052] The preset detection time is the time that needs to be detected for the vent valve in advance. It can be 20s, 30s, etc. It is set manually in advance. For the convenience of comparing pressure value data, it will not be elaborated here. The termination time is the time value at which the detection of the vent valve ends, and the intermediate time is the time value at the intermediate time of the detection process of the vent valve.

[0053] It is easy to understand that by adding the preset detection duration to the shut-off time of the air pump, the corresponding detection termination time can be obtained. For example, if the shut-off time is 14:34:02 and the preset detection duration is 30s, then the termination time is 14:34:02 + 30s = 14:34:32, thus obtaining the intermediate time as 14:34:17.

[0054] Through the above embodiments, the present invention can obtain the termination time and intermediate time of detecting the pressure value of the relief valve, which facilitates the subsequent judgment of the pressure value and the obtaining of the sealing test result.

[0055] S23, the pressure value of the release pressure curve is detected based on the closing time, the intermediate time and the termination time to obtain the sealing test result.

[0056] Understandably, in order to determine whether the venting pressure curve is continuously decreasing or remains stable during the testing period, it is necessary to test the pressure value of the venting pressure curve at the closing time, intermediate time, and termination time in order to obtain the sealing test result.

[0057] Through the above embodiments, the present invention can obtain sealing test results, automatically diagnose the vent valve, ensure the accuracy of test data, and greatly improve the timeliness of gas pressure regulator maintenance.

[0058] In some embodiments, step S23 (the step of detecting the pressure value of the venting pressure curve based on the closing time, the intermediate time, and the termination time to obtain the sealing detection result) includes steps S231-S235: S231, obtain the initial pressure value of the closing time in the venting pressure curve, the intermediate pressure value of the intermediate time in the venting pressure curve, and the termination pressure value of the termination time in the venting pressure curve.

[0059] It should be noted that in order to obtain the sealing test results, the pressure value of the release pressure curve needs to be measured. Therefore, it is necessary to obtain the pressure value at the corresponding time.

[0060] It is understandable that the initial pressure value in the relief pressure curve at the closing time, the intermediate pressure value in the relief pressure curve at the intermediate time, and the termination pressure value in the relief pressure curve at the termination time are obtained.

[0061] The initial pressure value is the pressure value corresponding to the closing moment in the release pressure curve, the intermediate pressure value is the pressure value corresponding to the intermediate moment in the release pressure curve, and the final pressure value is the pressure value corresponding to the final moment in the release pressure curve.

[0062] For example, in the pressure relief curve, the initial pressure value corresponding to the closing moment is 3.61 kPa, the intermediate pressure value corresponding to the intermediate moment is 3.5 kPa, and the termination pressure value corresponding to the termination moment is 3.49 kPa.

[0063] Through the above embodiments, the present invention obtains the pressure values ​​corresponding to the closing time, intermediate time and termination time in the release pressure curve, which facilitates the rapid and accurate acquisition of sealing test results.

[0064] S232, a first judgment value is obtained based on the difference between the initial pressure value and the intermediate pressure value, and a second judgment value is obtained based on the difference between the intermediate pressure value and the termination pressure value.

[0065] It should be noted that, in order to determine the changing trend of the release pressure curve, the pressure value can be detected and judged by the difference between the initial pressure value and the intermediate pressure value, as well as the difference between the intermediate pressure value and the final pressure value.

[0066] It is understood that the present invention can obtain a first judgment value based on the difference between the initial pressure value and the intermediate pressure value, and obtain a second judgment value based on the difference between the intermediate pressure value and the final pressure value.

[0067] The first judgment value is the difference between the initial pressure value and the intermediate pressure value, and the second judgment value is the difference between the intermediate pressure value and the final pressure value.

[0068] For example, when the initial pressure is 3.61 kPa, the intermediate pressure is 3.5 kPa, and the final pressure is 3.49 kPa, the first judgment value is 3.61 kPa - 3.5 kPa = 0.11 kPa, and the second judgment value is 3.5 kPa - 3.49 kPa = 0.01 kPa.

[0069] S233, when it is determined that the first judgment value is greater than or equal to the preset judgment value and / or the second judgment value is greater than or equal to the preset judgment value, a sealing abnormality result is generated.

[0070] It should be noted that in order to determine whether the pressure relief curve is in a downward or flat state, a preset judgment value is required as the judgment standard.

[0071] Understandably, when the difference between the initial pressure value and the intermediate pressure value and / or the difference between the intermediate pressure value and the final pressure value is calculated, i.e., the first judgment value and / or the second judgment value are greater than the preset judgment value, it indicates that the vent valve was not closed in time, resulting in air pressure leakage and a drop in pressure. If the valve does not rebound and close in time within the normal valve rebound time, it can be determined that the vent valve is abnormally sealed.

[0072] The preset judgment value is set manually and can be 0.2 kPa.

[0073] For example: when the preset judgment value is 0.2 kPa, the initial pressure value is 3.61 kPa, the intermediate pressure value is 3.5 kPa, and the final pressure value is 3 kPa, the first judgment value is 3.61 kPa - 3.5 kPa = 0.11 kPa, and the second judgment value is 3.5 kPa - 3 kPa = 0.5 kPa. Since the second judgment value is 0.5 kPa > 0.2 kPa, it indicates that the relief pressure curve is in a continuously decreasing state, and a sealing abnormality result is generated.

[0074] S234, when it is determined that the first judgment value is less than the preset judgment value and the second judgment value is less than the preset judgment value, the pressure change value is obtained based on the difference between the initial pressure value and the termination pressure value.

[0075] It is understandable that when the calculation determines that the first judgment value is less than the preset judgment value and the second judgment value is less than the preset judgment value, the pressure change value can be obtained based on the difference between the initial pressure value and the final pressure value.

[0076] For example, when the preset judgment value is 0.2 kPa, the initial pressure value is 3.61 kPa, the intermediate pressure value is 3.5 kPa, and the final pressure value is 3.4 kPa, the first judgment value is 3.61 kPa - 3.5 kPa = 0.11 kPa, and the second judgment value is 3.5 kPa - 3.4 kPa = 0.1 kPa. Since the first judgment value is 0.11 kPa < 0.2 kPa and the second judgment value is 0.1 kPa < 0.2 kPa, the pressure change value can be obtained as 3.61 kPa - 3.4 kPa = 0.21 kPa.

[0077] S235, if the pressure change value is greater than the preset change value, a sealing abnormality result is generated.

[0078] It should be noted that when the pressure change value is greater than the preset change value, it indicates that the amount of gas passing through the vent valve is too large during the detection time, resulting in a large pressure change. This indicates that the rebound time of the vent valve is too long, and its sealing performance is diagnosed as unqualified, generating a sealing abnormality result. When the pressure change value is not greater than the preset change value, it indicates that the amount of gas passing through the vent valve is normal during the detection time, and the pressure change is within the normal range. This indicates that the rebound time of the vent valve is normal, and its sealing performance is diagnosed as qualified, generating a sealing normal result.

[0079] It is understandable that when the pressure change value is greater than the preset change value, a sealing abnormality result is generated.

[0080] Among them, the preset change value is the boundary value set for judging the pressure change of the relief valve. It can be 0.2 kPa, which is set manually in advance. The sealing abnormality result is the result of abnormality obtained from the sealing test of the relief valve.

[0081] For example, if the preset change value is 0.2 kPa and the pressure change value is 0.21 kPa > 0.2 kPa, then the amount of gas passing through the vent valve is too large, resulting in a large pressure change. This indicates that the rebound time of the vent valve is too long, diagnosing its sealing performance as unqualified and generating a sealing abnormality result. When the initial pressure value is 3.61 kPa, the intermediate pressure value is 3.5 kPa, and the final pressure value is 3.49 kPa, the first judgment value is 0.11 kPa < 0.2 kPa, the second judgment value is 0.01 kPa < 0.2 kPa, and the pressure change value is 0.12 kPa < 0.2 kPa. Therefore, within the detection time, the amount of gas passing through the vent valve is normal, and the pressure change is within the normal range. This indicates that the rebound time of the vent valve is normal, diagnosing its sealing performance as qualified, and generating a sealing normal result.

[0082] Through the above embodiments, the present invention obtains the continuous pressure value of the relief valve and automatically calculates the pressure value change state, thereby determining whether the device has or has not produced an abnormal result, realizing automatic diagnosis of the device, improving detection efficiency, avoiding errors in results caused by data deviations in human calculations, and greatly improving the accuracy of detection.

[0083] S3, respond to the shut-off valve detection, obtain the shut-off pressure curve after the air pump pressurizes the shut-off valve, retrieve the feedback detection strategy to perform feedback detection on the shut-off pressure curve, and obtain the shut-off detection result.

[0084] It should be noted that, in order to accurately calculate the pressure value of the gas pressure regulator and achieve automatic diagnosis to determine whether the shut-off valve meets the requirements, the present invention can continuously measure the pressure value of the shut-off valve at different times through a sensor, generate a corresponding shut-off pressure curve based on the measured pressure value, and then use a shut-off pressure detection strategy to make feedback judgment based on the shut-off pressure curve.

[0085] Understandably, in response to the shut-off valve detection, the shut-off pressure curve after the air pump pressurizes the shut-off valve is obtained, and the feedback detection strategy is invoked to perform feedback detection on the shut-off pressure curve to obtain the shut-off detection result.

[0086] Among them, the shut-off pressure curve is a curve generated by measuring the pressure of the shut-off valve, and the feedback detection is the process of analyzing and detecting the shut-off pressure curve generated by the shut-off valve.

[0087] For example: Figure 4 As shown, the cut-off pressure curve contains continuous cut-off pressure values ​​and corresponds one-to-one with each moment of the detection.

[0088] Through the above embodiments, the present invention can use a feedback detection strategy to perform feedback detection on the shut-off pressure curve, realize automatic diagnosis of the shut-off valve, and generate corresponding detection results.

[0089] In some embodiments, step S3 (the response to the shut-off valve detection, obtaining the shut-off pressure curve after the air pump pressurizes the shut-off valve, retrieving the feedback detection strategy to perform feedback detection on the shut-off pressure curve, and obtaining the shut-off detection result) includes steps S31-S34: S31, respond to the shut-off valve detection, obtain the shut-off pressure curve after the air pump pressurizes the shut-off valve, and the time corresponding to the shut-off valve performing the shut-off action as the shut-off time.

[0090] It should be noted that during on-site maintenance, the pressure tap of the device should be connected to the pressure tap of the outlet pipeline, and one end of the sensor signal line should be connected to the signal input port of the device. The magnetic end of the sensor (a vibration sensor) should be attached to the shut-off valve to detect the location of the shut-off vibration. The device can be connected to the mobile APP via Bluetooth to start measuring the pipeline pressure. First, turn on the air pump to pressurize the pipeline. In order to check whether the shut-off valve is properly sealed, continue until the sensor detects the shut-off valve vibrating and shutting off. Measure a set of continuous pressure curves for a certain period of time before and after the shut-off valve vibrates and shuts off. Thus, the shut-off valve can be monitored and tested using the measured shut-off pressure curves.

[0091] Understandably, in response to the shut-off valve detection, the shut-off pressure curve after the air pump pressurizes the shut-off valve, and the time corresponding to the shut-off valve performing the shut-off action are obtained as the shut-off time.

[0092] For example, when the sensor detects the shut-off valve's shut-off vibration, the corresponding time is 14:01:15, then 14:01:15 is taken as the shut-off time.

[0093] Through the above implementation methods, the present invention can determine the detection time range based on the obtained cutting time, thereby avoiding uncontrolled time detection.

[0094] S32, extract the pressure value in the cutting pressure curve at the cutting moment as the cutting pressure value, and the maximum pressure value in the cutting pressure curve.

[0095] It should be noted that when using an air pump to pressurize the pipeline to reach the pressure opening value of the shut-off valve, if the shut-off valve is functioning normally, when the shut-off valve opens, the gas will not pass through the shut-off valve in large quantities, and the gas in the pipeline at the other end of the shut-off valve will be lost. As a result, the detected pressure value will gradually decrease. The pressure value detected at the moment the shut-off valve is shut off should be the maximum value. Therefore, in order to detect the shut-off pressure curve and determine the feedback result, it is necessary to obtain the corresponding pressure value in the shut-off pressure curve.

[0096] It is understandable that the pressure value at the moment of cutting is extracted from the cutting pressure curve as the cutting pressure value, as well as the maximum pressure value in the cutting pressure curve.

[0097] The maximum pressure value is the highest pressure value in the cut-off pressure curve.

[0098] For example: if the sensor detects that the shut-off valve shut-off time 14:01:15 corresponds to a pressure value of 4.5 kPa, the shut-off pressure value of the shut-off pressure curve generated during the current detection process will be 4.5 kPa, and the maximum value of the shut-off pressure curve will be 4.73 kPa.

[0099] Through the above embodiments, the present invention can obtain the cutting pressure value corresponding to the cutting moment and the maximum pressure value in the cutting pressure curve, which facilitates subsequent feedback detection and judgment of the cutting valve.

[0100] S33, when it is determined that the cutting pressure value is not equal to the maximum pressure value, the time feedback strategy is invoked to perform feedback detection on the cutting pressure curve to obtain the cutting detection result.

[0101] Understandably, when it is determined that the cutting pressure value is not equal to the maximum pressure value, the time feedback strategy is invoked to perform feedback detection on the cutting pressure curve to obtain the cutting detection result.

[0102] The cut-off test result indicates whether the cut-off valve is functioning normally or abnormally.

[0103] In some embodiments, step S33 (when it is determined that the cutting pressure value is not equal to the maximum pressure value, the time feedback strategy is invoked to perform feedback detection on the cutting pressure curve to obtain the cutting detection result) includes steps S331-S333: S331, when it is determined that the cutting pressure value is not equal to the maximum pressure value, the moment of the maximum pressure value in the cutting pressure curve is obtained as the comparison moment.

[0104] Understandably, when it is determined that the cut-off pressure value is not equal to the maximum pressure value, the moment when the maximum pressure value is obtained in the cut-off pressure curve is used as the comparison moment.

[0105] For example, when 4.5 kPa ≠ 4.73 kPa, the maximum pressure value in the cut-off pressure curve is 4.73 kPa, and the corresponding time is 14:01:30. Then, 14:01:30 is taken as the comparison time.

[0106] Through the above embodiments, the present invention can determine the comparison time, which facilitates subsequent detection of whether the shut-off valve has functional abnormalities.

[0107] S332, based on the difference between the comparison time and the cutting time corresponding to the cutting pressure value, a time feedback value is obtained.

[0108] Understandably, by obtaining the comparison time and the cut-off time corresponding to the cut-off pressure value, the difference between the comparison time and the cut-off time is obtained, and the obtained difference is used as the time feedback value.

[0109] For example, when the comparison time is 14:01:30 and the cutoff time is 14:01:15, the time feedback value is 15s.

[0110] Through the above implementation methods, the present invention obtains a time feedback value, which facilitates subsequent comparison with the standard time to obtain the detection result.

[0111] S333, if the time feedback value is greater than 2s, generate a cutoff anomaly result.

[0112] It should be noted that, according to the requirements of CJ / T335-2010 Urban Gas Shut-off Valve Industry Standard 6.1.7, the response time of the shut-off valve should not exceed 2 seconds. If it exceeds 2 seconds, it is deemed unqualified and poses a safety hazard.

[0113] Understandably, when the time feedback value is greater than 2 seconds, a cut-off anomaly result is generated, and the cut-off valve is determined to be unqualified.

[0114] Among them, the abnormal cut-off result refers to the detection result of an abnormality in the cut-off valve.

[0115] For example, when the time feedback value is 15s > 2s, the shut-off valve is determined to be unqualified, and a result of shut-off valve abnormality is generated.

[0116] It should be noted that the present invention generates a corresponding cutoff anomaly result when the time feedback value is greater than 2 seconds, and similarly, it also generates a corresponding detection result when the calculated time feedback value is not greater than 2 seconds. Therefore, in some embodiments, step S33 further includes step A1: A1, if the time feedback value is less than or equal to 2s, a normal cutting result is generated, and the cutting detection result includes a cutting abnormal result and a cutting normal result.

[0117] It is understandable that when the time feedback value is less than or equal to 2 seconds, a normal cut-off result is generated. The cut-off detection result includes both abnormal cut-off results and normal cut-off results.

[0118] Among them, the normal cut-off result is the normal detection result of the cut-off valve.

[0119] For example, when the comparison time is 14:01:15.529 and the cut-off time is 14:01:15, the calculated time feedback value is 0.529s. Since the time feedback value of 0.529s is less than 2s, the cut-off valve is deemed to be qualified.

[0120] Through the above embodiments, the present invention can calculate the corresponding time feedback value when the cut-off pressure value is not equal to the maximum pressure value, thereby determining whether the cut-off valve is functioning normally or abnormally.

[0121] S34, when it is determined that the cutting pressure value is equal to the maximum pressure value, the rate feedback strategy is invoked to perform feedback detection on the cutting pressure curve to obtain the cutting detection result. The feedback detection strategy includes a time feedback strategy and a rate feedback strategy.

[0122] It should be noted that when the cut-off pressure value is equal to the maximum pressure value, there is another corresponding detection method. Therefore, the rate feedback strategy is invoked to perform feedback detection on the cut-off pressure curve.

[0123] It is understandable that when the cut-off pressure value is determined to be equal to the maximum pressure value, the rate feedback strategy is invoked to perform feedback detection on the cut-off pressure curve to obtain the cut-off detection result. The feedback detection strategy includes a time feedback strategy and a rate feedback strategy.

[0124] For example, when the cut-off pressure value is 4.6 kPa and the maximum pressure value is 4.6 kPa, the corresponding time feedback strategy and rate feedback strategy are invoked to perform feedback detection on the cut-off pressure curve.

[0125] In some embodiments, step S34 (when the cut-off pressure value is determined to be equal to the maximum pressure value, the rate feedback strategy is invoked to perform feedback detection on the cut-off pressure curve to obtain the cut-off detection result) includes steps S341-S345: S341, when it is determined that the cutting pressure value is equal to the maximum pressure value, the time 1 second after the cutting time is obtained as the first time, the time 2 seconds after the cutting time is obtained as the second time, and the time 3 seconds after the cutting time is obtained as the third time.

[0126] It should be noted that, according to industry standards for shut-off valves, the response time of a shut-off valve should not exceed 2 seconds. Therefore, when testing and judging the shut-off pressure curve, the corresponding time value needs to be extracted.

[0127] It is understandable that when the cutting pressure value is determined to be equal to the maximum pressure value, the moment 1 second after the cutting moment is taken as the first moment, the moment 2 seconds after the cutting moment is taken as the second moment, and the moment 3 seconds after the cutting moment is taken as the third moment.

[0128] For example, when the cutoff time is 14:21:10, 14:21:11 is taken as the first time, 14:21:12 as the second time, and 14:21:13 as the third time.

[0129] Through the above embodiments, the present invention can obtain the first moment, the second moment and the third moment corresponding to the cut-off moment, which facilitates the subsequent detection of the cut-off valve and the generation of corresponding detection results.

[0130] S342, extract the pressure value in the cutting pressure curve at the first moment as the first pressure value, the pressure value in the cutting pressure curve at the second moment as the second pressure value, and the pressure value in the cutting pressure curve at the third moment as the third pressure value.

[0131] It is understandable that the pressure value at the first moment of the cutoff pressure curve is extracted as the first pressure value, the pressure value at the second moment of the cutoff pressure curve is extracted as the second pressure value, and the pressure value at the third moment of the cutoff pressure curve is extracted as the third pressure value.

[0132] For example, when the pressure values ​​corresponding to the 1st, 2nd, and 3rd seconds after the shut-off valve is cut off are obtained from the shut-off pressure curve, that is, the pressure value corresponding to the first moment is 4.59 kPa, the pressure value corresponding to the second moment is 4.57 kPa, and the pressure value corresponding to the third moment is 4.56 kPa, then the first pressure value is 4.59 kPa, the second pressure value is 4.57 kPa, and the third pressure value is 4.56 kPa.

[0133] Through the above embodiments, the present invention can obtain the pressure value at the corresponding required moment, which facilitates the subsequent calculation of the rate feedback value of the cut-off pressure value, thereby accurately determining the abnormality of the cut-off valve.

[0134] S343, a first pressure difference is obtained based on the absolute value of the difference between the second pressure value and the first pressure value, and a second pressure difference is obtained based on the absolute value of the difference between the second pressure value and the third pressure value.

[0135] Understandably, based on the obtained second and first pressure values, the absolute value of the difference between the two is calculated to obtain the first pressure difference. Based on the second and third pressure values, the absolute value of the difference between the two is calculated to obtain the second pressure difference.

[0136] The first pressure difference is the absolute value of the difference between the second pressure value and the first pressure value, and the second pressure difference is the absolute value of the difference between the second pressure value and the third pressure value.

[0137] For example, when the first pressure value is 4.59 kPa, the second pressure value is 4.57 kPa, and the third pressure value is 4.56 kPa, the calculated first pressure difference is |4.57 kPa - 4.59 kPa| = 0.02 kPa, and the second pressure difference is |4.57 kPa - 4.56 kPa| = 0.01 kPa.

[0138] Through the above embodiments, the present invention can obtain the corresponding first pressure difference value and second pressure difference value, thereby facilitating the subsequent calculation of the rate feedback value.

[0139] S344, based on the difference between the first pressure difference and the second pressure difference, a difference change value is obtained, and based on the ratio of the difference change value to the first pressure difference, a rate feedback value is obtained.

[0140] Understandably, the difference between the first pressure difference and the second pressure difference is used to obtain the difference change value, and the rate feedback value is obtained based on the ratio of the difference change value to the first pressure difference value.

[0141] The difference change value is the difference between the first pressure difference and the second pressure difference, and the rate feedback value is the ratio of the difference change value to the first pressure difference.

[0142] For example, when the first pressure difference is 0.02 kPa and the second pressure difference is 0.01 kPa, the calculated change in the difference is 0.02 kPa - 0.01 kPa = 0.01 kPa, and the rate feedback value is 0.01 kPa / 0.02 kPa = 0.5.

[0143] S345, if the rate feedback value is greater than the preset rate value, a cutoff abnormal result is generated.

[0144] It is understandable that when the rate feedback value is greater than the preset rate value, an abnormal cutoff result is generated.

[0145] The preset rate value is the rate value set to determine if it meets the standard requirements.

[0146] For example: when the preset rate value is 0.5, and the first pressure value is 4.59 kPa, the second pressure value is 4.49 kPa, and the third pressure value is 4.45 kPa, the calculated first pressure difference is |4.49 kPa - 4.59 kPa| = 0.1 kPa, the second pressure difference is |4.49 kPa - 4.45 kPa| = 0.04 kPa, and the difference change is 0.1 kPa - 0.04 kPa = 0.06 kPa. Therefore, the rate feedback value is 0.06 kPa / 0.1 kPa = 0.6. Since the rate feedback value is 0.6 > 0.5, the time feedback value is determined to be greater than 2 seconds, and an abnormal cutoff result is generated.

[0147] It should be noted that the present invention generates a corresponding cutoff anomaly result when the rate feedback value is greater than the preset rate value, and similarly, generates a corresponding detection result when the calculated rate feedback value is not greater than the preset rate value. Therefore, in some embodiments, step S34 further includes step B1: B1, if the rate feedback value is less than or equal to the preset rate value, a normal cut-off result is generated, and the cut-off detection result includes an abnormal cut-off result and a normal cut-off result.

[0148] It is understandable that when the rate feedback value is less than or equal to the preset rate value, a normal cut-off result is generated, where the cut-off detection result includes both abnormal cut-off results and normal cut-off results.

[0149] For example: when the rate feedback value is 0.5 and the preset rate value is 0.5, the judgment time feedback value is less than 2s, and a normal cut-off result is generated.

[0150] Through the above embodiments, the present invention can further determine whether the time feedback value of the shut-off valve is greater than 2s or less than 2s by calculating the rate feedback value, thereby obtaining the corresponding shut-off detection result, completing the detection and diagnosis of important equipment in the gas pressure regulator, analyzing and judging the shut-off pressure curve, automatically calculating the data results to improve the accuracy of detection, and at the same time, performing diagnosis based on automatic calculation, which greatly improves the maintenance efficiency of the gas pressure regulator.

[0151] S4. Based on the sealing detection result and / or the cutting detection result, generate early warning information and send it to the maintenance terminal.

[0152] It should be noted that when the test results are abnormal, that is, when the various components of the gas pressure regulator are found to be non-compliant with the standard requirements, relevant warning information needs to be sent so that maintenance personnel can carry out repairs.

[0153] Understandably, warning information is generated and sent to the maintenance terminal based on the sealing test results and / or cut-off test results.

[0154] The maintenance terminal is the terminal corresponding to the repair personnel, which can be a mobile phone, computer, etc.

[0155] Through the above embodiments, the present invention can generate corresponding early warning information based on the sealing test results of the diverging valve and the shut-off test results of the shut-off valve, enabling maintenance personnel to accurately identify equipment abnormalities, carry out targeted inspections and maintenance, and improve the maintenance efficiency of gas pressure regulators.

[0156] In some embodiments, step S4 (generating early warning information based on the sealing detection result and / or the cutting detection result and sending it to the maintenance terminal) includes steps S41-S42: S41, when the sealing detection result is determined to be a sealing abnormality and / or the cutting detection result is a cutting abnormality, an early warning message is generated and sent to the maintenance terminal.

[0157] Understandably, when the sealing test result is determined to be an abnormal sealing result and / or the cutting test result is determined to be an abnormal cutting result, corresponding early warning information needs to be generated and sent to the maintenance terminal.

[0158] For example, when testing a diverging valve and diagnosing a sealing abnormality, the information about the diverging valve sealing abnormality is sent to the maintenance personnel's Bluetooth-connected mobile phone. When testing a shut-off valve and diagnosing a shut-off abnormality, the information about the shut-off valve shut-off function abnormality is sent to the maintenance personnel's Bluetooth-connected mobile phone.

[0159] Through the above implementation method, early warning information can be sent to the maintenance terminal to remind maintenance personnel to carry out repairs in a timely manner.

[0160] S42, the maintenance unit replaces the corresponding protection device based on the warning information.

[0161] Understandably, maintenance personnel receive the corresponding warning information on the maintenance terminal and promptly replace the relevant protection equipment.

[0162] Through the above-described embodiments, the present invention completes the diagnosis and repair of the gas pressure regulator, ensuring the normal operation of the gas pressure regulator, thereby ensuring the safety and stability of the gas supply system.

[0163] like Figure 5 The diagram shown is a structural schematic of a gas pressure regulator maintenance and diagnostic system provided in an embodiment of the present invention. The gas pressure regulator maintenance and diagnostic system includes: The detection module is used to perform safety tests on various protective devices in the gas pressure regulator, including vent valve detection and shut-off valve detection.

[0164] The retrieval module is used to respond to the vent valve detection, obtain the vent pressure curve after the air pump pressurizes and closes the vent valve, retrieve the pressure detection strategy to detect the pressure value of the vent pressure curve, and obtain the sealing detection result.

[0165] The feedback module is used to respond to the shut-off valve detection, obtain the shut-off pressure curve after the air pump pressurizes the shut-off valve, retrieve the feedback detection strategy to perform feedback detection on the shut-off pressure curve, and obtain the shut-off detection result.

[0166] The sending module is used to generate early warning information based on the sealing detection result and / or the cutting detection result and send it to the maintenance terminal.

[0167] like Figure 6 The diagram shown is a hardware structure schematic of an electronic device according to an embodiment of the present invention. The electronic device 60 includes: a processor 61, a memory 62, and a computer program; wherein... The memory 62 is used to store the computer program, and the memory may also be flash memory. The computer program is, for example, an application program or functional module that implements the above method.

[0168] The processor 61 is configured to execute the computer program stored in the memory to implement the various steps performed by the device in the above method. For details, please refer to the relevant descriptions in the preceding method embodiments.

[0169] Alternatively, the memory 62 can be either standalone or integrated with the processor 61.

[0170] When the memory 62 is a device independent of the processor 61, the device may further include: Bus 63 is used to connect the memory 62 and the processor 61.

[0171] The present invention also provides a readable storage medium storing a computer program, which, when executed by a processor, is used to implement the methods provided in the various embodiments described above.

[0172] The readable storage medium can be a computer storage medium or a communication medium. A communication medium includes any medium that facilitates the transfer of computer programs from one location to another. A computer storage medium can be any available medium accessible to a general-purpose or special-purpose computer. For example, a readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application-Specific Integrated Circuit (ASIC). Alternatively, the ASIC can be located in a user equipment. Of course, the processor and the readable storage medium can also exist as discrete components in a communication device. The readable storage medium can be a read-only memory (ROM), random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0173] The present invention also provides a program product including executable instructions stored in a readable storage medium. At least one processor of the device can read the executable instructions from the readable storage medium, and the at least one processor executes the executable instructions to cause the device to implement the methods provided in the various embodiments described above.

[0174] In the embodiments of the above-described device, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly manifested as execution by a hardware processor, or execution by a combination of hardware and software modules within the processor.

[0175] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for maintenance and diagnosis of a gas pressure regulator, characterized in that, include: Safety tests are performed on all protective devices in the gas pressure regulator, including tests on the vent valve and the shut-off valve. In response to the vent valve detection, the vent pressure curve after the air pump pressurizes and closes the vent valve is obtained, and the pressure detection strategy is retrieved to detect the pressure value of the vent pressure curve to obtain the sealing detection result. In response to the shut-off valve detection, the shut-off pressure curve after the air pump pressurizes the shut-off valve is acquired. A feedback detection strategy is then invoked to perform feedback detection on the shut-off pressure curve, yielding the shut-off detection result, including: The shut-off valve is detected, and the shut-off pressure curve after the air pump pressurizes the shut-off valve is obtained, as well as the time when the shut-off valve performs the shut-off action, are used as the shut-off time. The pressure value at the cutting moment in the cutting pressure curve is extracted as the cutting pressure value, and the maximum pressure value in the cutting pressure curve is also extracted. When it is determined that the cutting pressure value is not equal to the maximum pressure value, the time feedback strategy is invoked to perform feedback detection on the cutting pressure curve to obtain the cutting detection result; When the cut-off pressure value is determined to be equal to the maximum pressure value, the rate feedback strategy is invoked to perform feedback detection on the cut-off pressure curve, and the cut-off detection result is obtained, including: When the cutting pressure value is determined to be equal to the maximum pressure value, the time 1 second after the cutting time is taken as the first time, the time 2 seconds after the cutting time is taken as the second time, and the time 3 seconds after the cutting time is taken as the third time. The pressure value at the first moment in the cutting pressure curve is extracted as the first pressure value, the pressure value at the second moment in the cutting pressure curve is extracted as the second pressure value, and the pressure value at the third moment in the cutting pressure curve is extracted as the third pressure value. A first pressure difference is obtained based on the absolute value of the difference between the second pressure value and the first pressure value, and a second pressure difference is obtained based on the absolute value of the difference between the second pressure value and the third pressure value. The difference change value is obtained based on the difference between the first pressure difference value and the second pressure difference value, and the rate feedback value is obtained based on the ratio of the difference change value to the first pressure difference value. If the rate feedback value is greater than the preset rate value, a cutoff abnormal result is generated. The feedback detection strategy includes a time feedback strategy and a rate feedback strategy. Based on the sealing test results and / or the cutting test results, an early warning message is generated and sent to the maintenance terminal.

2. The method according to claim 1, characterized in that, The response to the vent valve detection involves acquiring the vent pressure curve after the air pump pressurizes and closes the vent valve, retrieving the pressure value from the vent pressure curve using a pressure detection strategy, and obtaining the seal detection result, including: The system responds to the vent valve detection, obtains the vent pressure curve after the air pump pressurizes and closes the vent valve, and uses the corresponding time after the air pump pressurizes and closes the vent valve as the closing time. The termination time is determined based on the preset detection duration and the closing time, and the intermediate time is obtained based on the termination time and the closing time; The pressure value of the release pressure curve is detected based on the closing time, the intermediate time, and the termination time to obtain the sealing test result.

3. The method according to claim 2, characterized in that, The step of detecting the pressure value of the venting pressure curve based on the closing time, the intermediate time, and the termination time to obtain the sealing test result includes: The initial pressure value at the closing time in the venting pressure curve, the intermediate pressure value at the intermediate time in the venting pressure curve, and the termination pressure value at the termination time in the venting pressure curve are obtained. A first judgment value is obtained based on the difference between the initial pressure value and the intermediate pressure value, and a second judgment value is obtained based on the difference between the intermediate pressure value and the final pressure value. When the first judgment value is greater than or equal to the preset judgment value and / or the second judgment value is greater than or equal to the preset judgment value, a sealing abnormality result is generated; When it is determined that the first judgment value is less than the preset judgment value and the second judgment value is less than the preset judgment value, the pressure change value is obtained based on the difference between the initial pressure value and the termination pressure value; If the pressure change value is greater than the preset change value, a sealing abnormality result is generated.

4. The method according to claim 1, characterized in that, When it is determined that the cutting pressure value is not equal to the maximum pressure value, a time feedback strategy is invoked to perform feedback detection on the cutting pressure curve to obtain a cutting detection result, including: When it is determined that the cutting pressure value is not equal to the maximum pressure value, the moment when the maximum pressure value is found in the cutting pressure curve is used as the comparison moment. The time feedback value is obtained based on the difference between the comparison time and the cutting time corresponding to the cutting pressure value; If the time feedback value is greater than 2 seconds, a cutoff anomaly result is generated.

5. The method according to claim 4, characterized in that, Also includes: If the time feedback value is less than or equal to 2s, a normal cutting result is generated. The cutting detection result includes both abnormal cutting results and normal cutting results.

6. The method according to claim 1, characterized in that, Also includes: If the rate feedback value is less than or equal to the preset rate value, a normal cut-off result is generated. The cut-off detection result includes both abnormal cut-off results and normal cut-off results.

7. The method according to claim 1, characterized in that, The step of generating and sending early warning information to the maintenance terminal based on the sealing detection result and / or the cutting detection result includes: When the sealing test result is determined to be a sealing abnormality and / or the cutting test result is a cutting abnormality, an early warning message is generated and sent to the maintenance terminal; The maintenance team replaces the corresponding protection equipment based on the warning information.

8. A gas pressure regulator maintenance and diagnostic system according to any one of claims 1-7, characterized in that, include: The detection module is used to perform safety tests on various protective devices in the gas pressure regulator, including vent valve detection and shut-off valve detection. The retrieval module is used to respond to the vent valve detection, acquire the vent pressure curve after the air pump pressurizes and closes the vent valve, retrieve the pressure detection strategy to detect the pressure value of the vent pressure curve, and obtain the sealing detection result. The feedback module is used to respond to the shut-off valve detection, obtain the shut-off pressure curve after the air pump pressurizes the shut-off valve, retrieve the feedback detection strategy to perform feedback detection on the shut-off pressure curve, and obtain the shut-off detection result. The sending module is used to generate early warning information based on the sealing detection result and / or the cutting detection result and send it to the maintenance terminal.

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