Power equipment based on stored gas and intelligent gas sealing monitoring method and equipment thereof

Abstract

The invention relates to power equipment based on stored gas and a gas sealing intelligent monitoring method and equipment thereof. The method comprises the following steps: acquiring a first gas concentration, a second gas concentration and accumulated acquisition time in a gas cavity in the power equipment, and acquiring temperature data of an environment where a fusion detection element is located; dew-point temperature is calculated according to the temperature data; calculating the gas relative leakage rate according to the first gas concentration, the second gas concentration and the accumulated collection time; and judging whether the stored gas in the gas cavity in the power equipment leaks or not according to the dew point temperature or the gas relative leakage rate. According to the method, the gas tightness of the electrical equipment can be detected without dismounting a gas flange valve port through arranging a magnetic attraction coupling sealing cover fused with a detection element; according to the obtained gas concentration and temperature data, the dew point temperature and the gas relative leakage rate for judging whether the stored gas in the gas cavity in the power equipment leaks or not are obtained through calculation, monitoring of the gas tightness of the power equipment based on the stored gas is achieved, and the monitoring efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of gas monitoring technology, and in particular to a power device based on stored gas and a method and device for intelligent monitoring of gas sealing. Background Technology

[0002] Sulfur hexafluoride (SF6) gas sampling valves are widely used in power equipment (such as gas-insulated switchgear, circuit breakers, etc.) for gas filling, composition detection, and trace moisture measurement. SF6 is widely used in high-voltage switchgear, circuit breakers, and other power equipment due to its excellent insulation and arc-quenching properties. However, SF6 is a potent greenhouse gas (with a global warming potential 23,900 times that of CO2), and its leakage not only leads to equipment performance degradation but also causes serious environmental problems. Therefore, airtightness monitoring, leak sealing, and condition assessment of power equipment containing SF6 gas are core requirements for power operation and maintenance.

[0003] Power equipment containing SF6 gas requires regular testing and maintenance of the SF6 gas inside its gas chambers, necessitating the extraction or injection of SF6 gas through the chamber interface. For GIS combined electrical equipment with a three-screw fastening structure and a check valve, SF6 gas maintenance requires unscrewing to open the chamber interface and installing screws to connect the maintenance device, resulting in time-consuming and inefficient processes. Furthermore, a single power equipment containing SF6 gas often has multiple chambers, leading to numerous screw-installing and uninstalling operations during maintenance, significantly limiting work efficiency, increasing workload, extending working hours, and posing a risk of damaging the interface seal due to improper operation. In particular, the three-screw fastening structure with a check valve, where the three screws are symmetrically distributed at 120°, can cause uneven stress on the valve body if not tightened in the correct sequence, leading to deformation of the sealing surface or screw jamming. Additionally, operators may not follow the diagonal alternating tightening principle when loosening the screws, further contributing to uneven stress on the valve body and increasing disassembly difficulty. Using a manual wrench is time-consuming, while using an electric wrench can easily strip the threads, affecting sealing performance. Electrical equipment containing SF6 gas operates outdoors for extended periods, making its screws susceptible to corrosion from moisture and SF6 decomposition products (such as HF). This can cause check valve threads to seize, and repeated disassembly and reassembly of the check valve can lead to thread wear and screw seizure, requiring forceful disassembly or even replacement of the valve body. The confined spaces within SF6-containing electrical equipment often result in concealed screw locations, making operation inconvenient. Furthermore, the orientation of some screws may hinder tool application, necessitating repeated angle adjustments.

[0004] Current methods for monitoring SF6 gas inside the gas chambers of power equipment containing SF6 gas involve comprehensive monitoring using multiple sensors such as temperature, humidity, and gas concentration. Advanced data fusion and processing technologies are used to analyze the ventilation status of the power equipment. However, this method requires external data acquisition equipment, resulting in poor portability. Summary of the Invention

[0005] This application provides a power equipment based on stored gas and a method and device for intelligent monitoring of gas sealing, which solves the technical problems of difficult interface disassembly and assembly and low monitoring efficiency in the existing monitoring of SF6 gas in power equipment containing SF6 gas.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] On one hand, a smart gas sealing monitoring method for power equipment based on stored gas is provided, applied to power equipment storing gas, wherein the gas flange valve port of the gas chamber in the power equipment is snapped together with a magnetically coupled sealing cover, and a fusion detection element is set inside the magnetically coupled sealing cover. The smart gas sealing monitoring method includes the following steps:

[0008] The fusion detection element is used to obtain the first gas concentration, the second gas concentration, and the cumulative acquisition time in the gas cavity of the power equipment, as well as the temperature data of the environment where the fusion detection element is located.

[0009] The dew point temperature is calculated based on the temperature data.

[0010] The relative gas leakage rate is calculated based on the first gas concentration, the second gas concentration, and the cumulative collection time.

[0011] Whether the gas stored in the gas chamber of the power equipment is leaking is determined based on the dew point temperature or the relative gas leakage rate.

[0012] Preferably, the dew point temperature is calculated based on the temperature data, including:

[0013] Obtain the first temperature coefficient and the second temperature coefficient, and calculate the temperature and humidity correlation coefficient based on the first temperature coefficient, the second temperature coefficient and the temperature data;

[0014] The dew point temperature is calculated based on the first temperature coefficient, the second temperature coefficient, and the temperature-humidity correlation coefficient.

[0015] Preferably, the intelligent monitoring method for gas sealing of power equipment based on stored gas further includes: calculating a temperature-humidity correlation coefficient using a correlation coefficient formula based on the first temperature coefficient, the second temperature coefficient, and the temperature data; and calculating a dew point temperature using a temperature formula based on the first temperature coefficient, the second temperature coefficient, and the temperature-humidity correlation coefficient; the correlation coefficient formula is:

[0016]

[0017] The temperature formula is:

[0018]

[0019] In the formula, α(T, RH) is the temperature-humidity correlation coefficient, a is the first temperature coefficient, b is the second temperature coefficient, and T is the temperature data. d This is the dew point temperature.

[0020] Preferably, the intelligent gas sealing monitoring method for power equipment based on stored gas further includes: calculating the relative gas leakage rate using a leakage rate formula based on the first gas concentration, the second gas concentration, and the cumulative acquisition time; the leakage rate formula is:

[0021]

[0022] In the formula, γ is the relative gas leakage rate, C1 is the first gas concentration, C2 is the second gas concentration, and Δt is the cumulative sampling time between the first gas concentration and the second gas concentration.

[0023] Preferably, a micro-adsorption element for sealing the gas flange valve port is provided between the gas flange valve port and the magnetic coupling sealing cover. The intelligent gas sealing monitoring method further includes: if the relative gas leakage rate is greater than the leakage rate threshold, it is determined that there is a leak in the gas stored in the gas chamber of the power equipment, and the micro-adsorption element is controlled to release sealing material to seal the leakage gap of the gas flange valve port.

[0024] On the other hand, a gas-based power device is provided, including a gas chamber for storing gas, a gas flange valve port of the gas chamber being snap-fitted to a magnetically coupled sealing cover, a micro-adsorption element for sealing the gas flange valve port being disposed between the gas flange valve port and the magnetically coupled sealing cover, the micro-adsorption element including a composite filter element for adsorbing leaked gas and a filler for sealing gas leak gaps, and a fusion detection element and an intelligent monitoring module being disposed inside the magnetically coupled sealing cover;

[0025] The fusion detection element is used to collect gas data in the gas cavity and temperature data of the environment in which the fusion detection element is located.

[0026] The intelligent monitoring module is used to process the gas data and the temperature data according to the gas sealing intelligent monitoring method for power equipment based on stored gas, as described above, to obtain the dew point temperature and the relative gas leakage rate for determining whether the gas in the gas cavity is leaking.

[0027] Preferably, the fusion detection element is a detection element composed of a miniature sensor array formed by multiple sensor elements, and a micron-level flow channel network matching the multiple sensor elements is provided inside the magnetic coupling sealing cover. The flow channels of the micron-level flow channel network are used to guide the gas flow out of the gas flange valve port.

[0028] Preferably, the fusion detection element is transmitted via I 2 The C / SPI bus is connected to the intelligent monitoring module, and the I 2 A signal anti-interference module is provided on the C / SPI bus. The signal anti-interference module includes a pull-up resistor and a decoupling capacitor connected in parallel with the pull-up resistor.

[0029] Preferably, the intelligent monitoring module includes a leakage monitoring submodule, a blasting triggering submodule, a sealing execution submodule, and an alarm and communication submodule connected in sequence.

[0030] The leakage monitoring submodule is used to process the gas data and the temperature data according to the above-described intelligent gas sealing monitoring method for power equipment based on stored gas, to obtain the dew point temperature and relative gas leakage rate for determining whether the gas in the gas cavity is leaking.

[0031] The explosion triggering submodule is used to determine that there is a leak in the gas stored in the gas chamber of the power equipment when the relative gas leakage rate is greater than the leakage rate threshold.

[0032] The sealing execution submodule is used to control the micro-adsorption element to release sealing material to seal the leakage gap of the gas flange valve port;

[0033] The alarm and communication submodule is used to issue an alarm based on the determination that there is a leak of stored gas in the gas chamber of the power equipment.

[0034] On the other hand, a terminal device is provided, including a processor and a memory;

[0035] The memory is used to store program code and transmit the program code to the processor;

[0036] The processor is used to execute the above-described intelligent gas sealing monitoring method for power equipment based on stored gas, according to the instructions in the program code.

[0037] This invention relates to a gas-storage power equipment and its intelligent gas sealing monitoring method and device. Applied to a gas-storage power equipment, the gas flange valve of the gas chamber in the power equipment is snap-fitted to a magnetically coupled sealing cover. A fusion detection element is installed inside the magnetically coupled sealing cover. The intelligent gas sealing monitoring method includes acquiring the concentration of a first gas, the concentration of a second gas, and the cumulative acquisition time within the gas chamber of the power equipment through the fusion detection element, as well as acquiring the temperature data of the environment where the fusion detection element is located; calculating the dew point temperature based on the temperature data; calculating the relative gas leakage rate based on the first gas concentration, the second gas concentration, and the cumulative acquisition time; and determining whether the stored gas in the gas chamber of the power equipment is leaking based on the dew point temperature or the relative gas leakage rate.

[0038] As can be seen from the above technical solutions, this application has the following advantages: The intelligent gas sealing monitoring method for power equipment based on stored gas achieves gas sealing performance detection of power equipment without disassembling the gas flange valve by setting a magnetically coupled sealing cover with a fusion detection element; it monitors the gas concentration in the gas cavity of the power equipment and the temperature data of the monitoring environment in real time by using the fusion detection element, and then calculates the dew point temperature and relative gas leakage rate to determine whether the stored gas in the gas cavity of the power equipment is leaking based on the acquired gas concentration and temperature data, thereby realizing the monitoring of gas sealing performance of power equipment based on stored gas and improving monitoring efficiency; it solves the technical problems of difficult interface disassembly and assembly and low monitoring efficiency in the existing monitoring of SF6 gas in power equipment containing SF6 gas.

[0039] The magnetically coupled sealing cover of this gas-based power device uses magnetic materials coupled with an electromagnetic device to achieve rapid adsorption and release of the magnetically coupled sealing cover without the need for screws. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart illustrating the steps of the intelligent gas sealing monitoring method for power equipment based on stored gas, as described in an embodiment of this application.

[0042] Figure 2 This is a schematic diagram of the connection between the gas flange valve port and the magnetic coupling sealing cover in the gas-based power equipment described in the embodiments of this application;

[0043] Figure 3This is a cross-sectional view of the connection between the gas flange valve port and the magnetic coupling sealing cover in the gas-based power equipment described in this application embodiment.

[0044] Figure 4 This is a schematic diagram of the rotating cross-sectional structure of the connection between the gas flange valve port and the magnetic coupling sealing cover in the gas-based power equipment described in the embodiments of this application;

[0045] Figure 5 This is a schematic diagram of the data transmission framework for fused detection elements in a gas-based power device according to an embodiment of this application.

[0046] Figure 6 This is a schematic diagram of the framework of the intelligent monitoring module in the gas-based power equipment described in the embodiments of this application;

[0047] Figure 7 This is a schematic diagram of the terminal device described in an embodiment of this application.

[0048] Reference numerals: Magnetic coupling sealing cover 101, gas flange valve port 102, test joint 103. Detailed Implementation

[0049] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0052] This application provides a power equipment based on stored gas and a method and device for intelligent monitoring of its gas sealing, which solves the technical problems of difficult interface disassembly and assembly and low monitoring efficiency in the existing monitoring of SF6 gas in power equipment containing SF6 gas.

[0053] Example 1:

[0054] Figure 1 This is a flowchart illustrating the steps of the intelligent gas sealing monitoring method for power equipment based on stored gas, as described in an embodiment of this application.

[0055] like Figure 1 As shown, this application provides a gas sealing intelligent monitoring method for power equipment based on stored gas. The method is applied to power equipment storing gas, where the gas flange valve of the gas chamber in the power equipment is snap-fitted to a magnetically coupled sealing cover. A fusion detection element is installed inside the magnetically coupled sealing cover. The gas sealing intelligent monitoring method includes the following steps:

[0056] S1. Obtain the first gas concentration, the second gas concentration, and the cumulative acquisition time in the gas chamber of the power equipment through the fusion detection element, as well as the temperature data of the environment where the fusion detection element is located.

[0057] It should be noted that in step S1, data is acquired through a fusion detection element to provide data for subsequent steps to calculate the dew point temperature and relative gas leakage. In this embodiment, the first gas concentration is the concentration of gas in the gas chamber of the power equipment during the first sampling, the second gas concentration is the concentration of gas in the gas chamber of the power equipment during the second sampling, and the time interval between the first and second sampling is used as the cumulative sampling time. The power equipment can be a gas-insulated switchgear or a circuit breaker, etc.

[0058] S2. Calculate the dew point temperature based on the temperature data.

[0059] It should be noted that in step S2, the dew point temperature of the gas flange valve port of the power equipment is calculated based on the temperature data obtained in step S1, which provides one of the judgment data for subsequent steps to determine whether the gas stored in the gas chamber of the power equipment is leaking.

[0060] S3. Calculate the relative gas leakage rate based on the first gas concentration, the second gas concentration, and the cumulative sampling time.

[0061] It should be noted that in step S3, the relative gas leakage rate of the gas inside the power equipment is calculated based on the first gas concentration, the second gas concentration and the cumulative collection time obtained in step S1. This provides one of the judgment data for subsequent steps to determine whether the gas stored in the gas chamber of the power equipment is leaking.

[0062] S4. Determine whether the gas stored in the gas chamber of the power equipment is leaking based on the dew point temperature or the relative gas leakage rate.

[0063] It should be noted that in step S4, the leakage of the stored gas in the gas chamber of the power equipment is determined based on the dew point temperature obtained in step S2 or the relative gas leakage rate obtained in step S3. In this embodiment, if the dew point temperature is greater than a temperature threshold or the relative gas leakage rate is greater than a leakage rate threshold, it is determined that the stored gas in the gas chamber of the power equipment is leaking; if the dew point temperature is not greater than a temperature threshold or the relative gas leakage rate is not greater than a leakage rate threshold, it is determined that the stored gas in the gas chamber of the power equipment is not leaking, thus realizing the monitoring of the gas tightness of the power equipment based on the stored gas. The temperature threshold and leakage rate threshold can be set according to requirements and are not specifically limited here.

[0064] In this embodiment of the application, the intelligent gas sealing monitoring method for power equipment based on stored gas can monitor the gas concentration in the gas cavity of the power equipment and the temperature data of the monitoring environment in real time. Then, based on the acquired gas concentration and temperature data, the dew point temperature and relative gas leakage rate are calculated to determine whether the stored gas in the gas cavity of the power equipment is leaking, thereby realizing the monitoring of the gas sealing performance of power equipment based on stored gas.

[0065] This application provides a gas-tight intelligent monitoring method for power equipment based on stored gas. The method is applied to power equipment storing gas, where a gas flange valve in the gas chamber of the power equipment is snapped together with a magnetically coupled sealing cover. A fusion detection element is installed inside the magnetically coupled sealing cover. The intelligent gas-tight monitoring method includes acquiring the concentration of a first gas, the concentration of a second gas, and the cumulative acquisition time in the gas chamber of the power equipment through the fusion detection element, as well as acquiring the temperature data of the environment where the fusion detection element is located; calculating the dew point temperature based on the temperature data; calculating the relative gas leakage rate based on the first gas concentration, the second gas concentration, and the cumulative acquisition time; and determining whether the stored gas in the gas chamber of the power equipment is leaking based on the dew point temperature or the relative gas leakage rate. This intelligent monitoring method for gas tightness of power equipment based on stored gas achieves gas tightness testing without disassembling the gas flange valve by using a magnetically coupled sealing cover equipped with a fusion detection element. The fusion detection element monitors the gas concentration within the gas chamber of the power equipment and the ambient temperature in real time. Based on the acquired gas concentration and temperature data, the dew point temperature and relative leakage rate are calculated to determine whether the stored gas in the gas chamber is leaking. This method improves monitoring efficiency and solves the technical problems of difficult interface disassembly and assembly and low monitoring efficiency in existing monitoring of SF6 gas in power equipment containing SF6 gas.

[0066] In one embodiment of this application, the dew point temperature is calculated based on temperature data, including:

[0067] Obtain the first temperature coefficient and the second temperature coefficient, and calculate the temperature and humidity correlation coefficient based on the first temperature coefficient, the second temperature coefficient and the temperature data;

[0068] The dew point temperature is calculated based on the first temperature coefficient, the second temperature coefficient, and the temperature-humidity correlation coefficient.

[0069] Specifically, the temperature-humidity correlation coefficient is calculated using the correlation coefficient formula based on the first temperature coefficient, the second temperature coefficient, and temperature data; the dew point temperature is calculated using the temperature formula based on the first temperature coefficient, the second temperature coefficient, and the temperature-humidity correlation coefficient; the correlation coefficient formula is as follows:

[0070]

[0071] The temperature formula is:

[0072]

[0073] In the formula, α(T, RH) is the temperature-humidity correlation coefficient, a is the first temperature coefficient, b is the second temperature coefficient, and T is the temperature data. d This refers to the dew point temperature. RH refers to the relative humidity inside the gas flange valve port.

[0074] It should be noted that the first temperature coefficient 'a' can be selected as 17.27, and the second temperature coefficient 'b' can be selected as 237.7.

[0075] In one embodiment of this application, the intelligent gas sealing monitoring method for power equipment based on stored gas further includes: calculating the relative gas leakage rate using a leakage rate formula based on a first gas concentration, a second gas concentration, and cumulative sampling time; the leakage rate formula is:

[0076]

[0077] In the formula, γ is the relative gas leakage rate, C1 is the first gas concentration, C2 is the second gas concentration, and Δt is the cumulative sampling time between the first gas concentration and the second gas concentration.

[0078] In one embodiment of this application, a micro-adsorption element for sealing the gas flange valve port is provided between the gas flange valve port and the magnetic coupling sealing cover. The intelligent gas sealing monitoring method further includes: if the relative gas leakage rate is greater than the leakage rate threshold, it is determined that there is a leak in the gas stored in the gas chamber of the power equipment, and the micro-adsorption element is controlled to release sealing material to seal the leakage gap of the gas flange valve port.

[0079] It should be noted that this intelligent gas sealing monitoring method for power equipment based on stored gas determines whether there is a gas leak in the gas chamber of the power equipment by using the relative gas leakage rate. It controls the micro-adsorption element to release sealing material to seal the leak gap at the gas flange valve port, thereby preventing gas leakage from the gas chamber into the air and causing environmental pollution.

[0080] In one embodiment of this application, the intelligent monitoring method for gas sealing of power equipment based on stored gas further includes:

[0081] The system acquires the initial relative gas leakage rate, real-time relative gas leakage rate, real-time dew point temperature, and real-time gas concentration of the power equipment; and acquires the first weighting coefficient, second weighting coefficient, and third weighting coefficient of the micro-adsorption element.

[0082] The degradation index data is obtained by using the degradation index formula based on the initial relative gas leakage rate, real-time relative gas leakage rate, real-time dew point temperature, real-time gas concentration, first weighting coefficient, second weighting coefficient, and third weighting coefficient.

[0083] Determine whether the micro-adsorption element has reached its service life based on degradation index data;

[0084] The degradation index formula is as follows:

[0085]

[0086] In the formula, γ0 is the initial relative gas leakage rate, γ t Let T be the real-time relative gas leakage rate at time t. dmax T is the temperature threshold. dt Let C be the real-time dew point temperature at time t. SF6 For real-time gas concentration, C crit ω1 represents the critical concentration of SO2; ω2, ω3 are the first, second, and third weighting coefficients, respectively, which can be set according to requirements; DHI represents the degradation index data.

[0087] It should be noted that when the degradation index data DHI is greater than 0.8, it indicates that the micro-adsorption element has reached the end of its service life and needs to be replaced.

[0088] Example 2:

[0089] Figure 2 This is a schematic diagram of the connection between the gas flange valve port and the magnetic coupling sealing cover in the gas-based power equipment described in this application embodiment. Figure 3 This is a cross-sectional view of the connection between the gas flange valve port and the magnetically coupled sealing cover in the gas-based power equipment described in this application embodiment.

[0090] like Figure 2 and Figure 3 As shown, this application embodiment provides a power device based on gas storage, including a gas chamber for storing gas. The gas flange valve port 102 of the gas chamber is snapped together with a magnetic coupling sealing cover 101. A micro adsorption element for sealing the gas flange valve port 102 is provided between the gas flange valve port 102 and the magnetic coupling sealing cover 101. The micro adsorption element includes a composite filter for adsorbing leaked gas and a filler for sealing gas leakage gaps. A fusion detection element and an intelligent monitoring module are provided inside the magnetic coupling sealing cover 101.

[0091] The fusion detection element is used to collect gas data within the gas chamber and temperature data of the environment in which the fusion detection element is located.

[0092] The intelligent monitoring module is used to process gas data and temperature data according to the above-mentioned intelligent monitoring method for gas sealing of power equipment based on stored gas, and obtain the dew point temperature and relative gas leakage rate to determine whether the gas in the gas chamber is leaking.

[0093] It should be noted that the steps of the intelligent gas sealing monitoring method for power equipment based on stored gas have already been described in the steps of Embodiment 1, and will not be repeated in this embodiment. In this embodiment, the gas data includes first gas concentration data, second gas concentration data, and cumulative acquisition time. The micro-adsorption element is internally filled with a composite filter element of activated carbon and molecular sieve to adsorb leaked SF6. A catalytic decomposition layer is simultaneously designed within the composite filter element using loaded nano-TiO2, which, activated by an ultraviolet LED, decomposes SF6 into harmless fluoride solids. The filler can be high-viscosity silica gel.

[0094] In this embodiment, the gas-based power device is connected to the magnetically coupled sealing cover 101 via a gas flange valve 102 in the gas chamber. This allows the power device to perform gas filling, component detection, and micro-moisture measurement without removing or installing screws on the magnetically coupled sealing cover 101. Specifically, the openings of the gas flange valve 102 and the magnetically coupled sealing cover 101 are coaxially aligned. The inner diameter of the magnetically coupled sealing cover 101 is interference-fitted with the outer diameter of the gas flange valve 102 (tolerance ±0.05mm). The height of the magnetically coupled sealing cover 101 is flush with the gas flange valve 102, ensuring complete coverage of the sealing surface.

[0095] It should be noted that the gas flange valve port 102 is made of a soft magnetic alloy. For example... Figure 2 and Figure 3As shown, a ring electromagnet is embedded in the bottom of the magnetic coupling sealing cover 101. When energized, it generates an attraction force of ≥50N, ensuring that the compression of the inner sealing ring of the magnetic coupling sealing cover 101 remains stable between 0.8mm and 1.2mm. During attraction, it automatically adheres to the gas flange valve port 102, ensuring the airtightness of the gas flange valve port 102 in the power equipment. Simultaneously, the sealing status of the magnetic coupling sealing cover 101 is monitored in real time through the electromagnetic induction attraction area S and the air gap magnetic flux density B. The criterion for judging whether the attraction force F(N) meets the standard is: if F(N) ≥ 50N, then the sealing performance of the magnetic coupling sealing cover 101 meets the standard. Wherein, F(N) = 2S × B² / μ0, where μ0 is the vacuum permeability (a constant, μ0 = 4π × 10⁻⁶). -7 F(N) represents the adsorption force of the magnetically coupled sealing cover 101. This magnetically coupled sealing cover 101 for gas-storage electrical equipment uses magnetic materials coupled with an electromagnetic device to achieve rapid adsorption and release of the magnetically coupled sealing cover 101 without the need for screws. It also uses electromagnetic induction to detect the adsorption force, ensuring airtightness, and has a built-in elastic sealing ring that automatically fits the valve port.

[0096] Figure 4 This is a rotating cross-sectional view of the connection between the gas flange valve port and the magnetically coupled sealing cover in the gas-based power equipment described in this application embodiment.

[0097] like Figure 4 As shown in the embodiments of this application, the gas flange valve port 102 of the gas chamber is snapped together with the magnetic coupling sealing cover 101. When the magnetic coupling sealing cover 101 is connected to the gas flange valve port 102 in place, a rotating pin is designed on the magnetic coupling sealing cover 101. By rotating at a specific angle, the gas chamber of the power equipment is connected to the pipeline of the test joint 103. When the joint is rotated to 30°, the internal pin opens the check valve. The pin surface is coated with PTFE-graphite composite material with a rotational friction coefficient ≤0.1. The pin tail has an M4 fine thread, which extends or retracts 0.5mm for every 90° rotation, adapting to different valve body depths (adjustment range 4-10mm).

[0098] It should be noted that the gas-based power equipment is connected to the gas flange valve port 102 via a rotating snap-fit ​​of the magnetically coupled sealing cover 101. After rotation into place, the pin opens the check valve, enabling pipeline connection. The adjustable pin length, which can be adjusted via threads, accommodates different check valve depth requirements. Simultaneously, the pin surface is coated with a wear-resistant sealing material to keep the edges of the gas flange valve port 102 clean.

[0099] In one embodiment of this application, the fusion detection element is a detection element composed of a micro-sensor array formed by multiple sensor elements. A micron-level flow channel network matching the multiple sensor elements is provided in the magnetic coupling sealing cover 101. The flow channels of the micron-level flow channel network are used to guide the flow of gas flowing out of the gas flange valve port 102.

[0100] It should be noted that the fusion detection element within the magnetically coupled sealing cover 101 employs multi-parameter fusion sensing technology. This element uses a highly integrated micro-sensor array to synchronously monitor key parameters such as humidity, SF6 gas concentration, pressure fluctuations, and temperature in real time. The parameters of the fusion detection element are shown in Table 1. Specifically, humidity monitoring utilizes a capacitive digital humidity sensor with an accuracy of ±1.5%RH, directly embedded in the inner wall of the magnetically coupled sealing cover 101. SF6 concentration detection integrates a non-dispersive infrared sensor or an electrochemical sensor, with a detection range of 0-3000ppm and an anti-cross-interference design. Pressure monitoring employs a MEMS piezoresistive pressure sensor with a range of 0-1MPa and dynamic response to pressure fluctuations. Temperature monitoring utilizes a surface-mount PT1000 platinum resistance thermometer or a digital temperature sensor, covering a range of -40℃ to 85℃. This gas-based power device can simultaneously monitor humidity (capacitive), SF6 concentration (NDIR / electrochemical), pressure (MEMS), and temperature (PT1000) through a fusion detection element. The 3D-printed layered layout is anti-interference. The microchannel gas guidance of the fusion detection element is achieved by etching micron-level channels inside the magnetically coupled sealing cover 101 to guide gas flow and improve the detection accuracy of local parameters (such as condensation risk).

[0101] Table 1 shows the chip parameters of the fusion detection element.

[0102]

[0103] In this embodiment, the sensor elements of the fusion detection element are arranged in a compact layout. Each sensor element is layered within a 3D-printed cavity inside the magnetically coupled sealing cover 101 to avoid signal interference. The outer shell adopts an IP67 protection design. A micron-level flow channel network is etched on the inner surface of the magnetically coupled sealing cover 101 to integrate a capacitive humidity sensor array. The flow channels guide gas flow near the valve port, and the sensor elements capture local humidity gradient changes in real time to accurately determine the risk of condensation or water leakage. Data from each sensor element is acquired through multi-channel acquisition and synchronously sampled by the ADC module of a low-power MCU, with a sampling frequency ≥10Hz and timestamp alignment. A 12-bit or higher ADC module supporting up to 16 channels is selected, with a built-in hardware multiplexer capable of scanning multiple channels and supporting dual ADC mode, allowing simultaneous sampling of two signals. The analog outputs of each sensor element are connected to the ADC pin of the MCU. If the output signal of each sensor element is weak, an instrumentation amplifier is added to amplify it to the ADC range. The TRGO signal of an advanced timer is used to trigger the ADC to ensure a strictly periodic sampling interval.

[0104] Figure 5 This is a schematic diagram of the framework for data transmission of fused detection elements in a gas-based power device according to an embodiment of this application.

[0105] like Figure 5 As shown, in one embodiment of this application, the fusion detection element is transmitted via I... 2 The C / SPI bus connects to the intelligent monitoring module, I 2 The C / SPI bus is equipped with a signal anti-interference module, which includes a pull-up resistor and a decoupling capacitor connected in parallel with the pull-up resistor.

[0106] It should be noted that the individual sensor elements of the fusion detection element adopt I... 2 C / SPI bus time-division multiplexing technology reduces wiring complexity. 2 The C / SPI bus shares three lines: SCK (clock), MOSI (master-output, slave-in), and MISO (master-in, slave-output). Each sensor element has its own dedicated CS (chip select) line, accessed through a unique I / O pin. 2 Address differentiation is used; if address conflicts occur, a multiplexer is used for expansion. The MCU activates communication by pulling the CS pin of the target sensor low via GPIO, while other sensor elements remain in a high-impedance state. This fusion detection element for the gas-storage power device ensures interference resistance and synchronization in data acquisition through a signal anti-interference module; for example, it uses a bus with a 10kΩ pull-up resistor (I...). 2 C) or a termination matching resistor. A 0.1μF decoupling capacitor is connected in parallel to the power supply pin of the sensor element to reduce noise. The RTC time is recorded at the beginning of each polling cycle to ensure data timing consistency. Bus collision detection (I) 2C) Automatic retransmission when CS fails.

[0107] In the embodiments of this application, before processing the gas and temperature data, the intelligent monitoring module uses a neural network-based (Tiny ML) approach to denoise and compensate for the multi-source data, fusing and calculating the data to improve the accuracy of the sensor elements. Raw sensor data under different operating conditions is collected in a standard environment, and the true values ​​are labeled using a high-precision reference instrument. Inputting data into the neural network, such as [temperature T, humidity TH, SF6raw (representing the raw data from the SF6 sensor)], outputs the corrected SF6 concentration. Extreme temperature and humidity combinations (e.g., -40℃, 95%RH) are input to check the reasonableness of the SF6 output. This is called in real-time within the intelligent monitoring module, and the data correction formula is: SF6corrected == NN(T, TH, SF6raw).

[0108] In the embodiments of this application, the gas-based power device can calibrate the fusion detection elements non-contactly. For example, using Near Field Communication (NFC) technology, a handheld terminal can automatically read the parameters of each sensor element and complete the calibration by approaching the magnetically coupled sealing cover 101, avoiding the cumbersome process of traditional disassembly and calibration. A self-test button is designed, which, when triggered, automatically performs airtightness tests, sensor element function verification, and data transmission tests. The results are fed back through LED indicators or mobile devices, simplifying maintenance complexity. Alternatively, an NFC tag can be embedded on the outside of the magnetically coupled sealing cover 101. After maintenance personnel scan the tag with AR glasses, a digital twin model is automatically retrieved, overlaying and displaying the real-time status of the valve port, operation instructions, and historical maintenance records. Combined with gesture recognition technology, contactless operation log entry is supported. Reference is made to microelectromechanical systems (MEMS) technology in semiconductor manufacturing.

[0109] Figure 6 This is a schematic diagram of the framework of the intelligent monitoring module in the gas-based power equipment described in the embodiments of this application.

[0110] like Figure 6 As shown, in one embodiment of this application, the intelligent monitoring module includes a leakage monitoring submodule, a blasting triggering submodule, a sealing execution submodule, and an alarm and communication submodule connected in sequence.

[0111] The leakage monitoring submodule is used to process gas data and temperature data according to the above-mentioned intelligent gas sealing monitoring method for power equipment based on stored gas, and obtain the dew point temperature and relative gas leakage rate to determine whether the gas in the gas chamber is leaking.

[0112] The blast triggering submodule is used to determine if there is a leak in the gas stored in the gas chamber of the power equipment when the relative gas leakage rate is greater than the leakage rate threshold.

[0113] The sealing execution submodule is used to control the micro-adsorption element to release sealing material to seal the leakage gaps at the gas flange valve port;

[0114] The alarm and communication submodule is used to issue an alarm based on the detection of a leak in the gas stored in the gas chamber of the power equipment.

[0115] It should be noted that the magnetically coupled sealing cap 101 has a built-in micro-rupture disc that automatically breaks and triggers sealing and alarm. When the fusion detection element inside the magnetically coupled sealing cap 101 detects that the relative gas leakage rate exceeds the leakage rate threshold, the built-in micro-rupture disc automatically breaks the micro-adsorption element, releasing high-viscosity silica gel filler to seal the leakage path, and simultaneously triggering an audible and visual alarm. In this embodiment, the micro-rupture disc is typically made of brittle materials or a pre-cracked metal film, and its rupture pressure is precisely calibrated. When a sudden pressure change is detected, an electrical signal triggers a micro-electric detonator EBW or heating element to actively rupture the micro-rupture disc, rather than relying on pressure difference for rupture. The filler is pre-compressed and stored in a capsule cavity inside the magnetically coupled sealing cap 101, and is typically a two-component silica gel (remaining inert when unmixed). After the micro-rupture disc breaks, a piston is pushed by a built-in spring or compressed gas, squeezing out the silica gel filler. The silica gel expands upon contact with air / moisture, quickly filling the leak gap. The cavity outlet is designed as a capillary channel or guide groove to ensure that the silicone preferentially flows to the leakage path. When the miniature rupture disc breaks, a linked miniature switch closes, activating the alarm circuit. An integrated RFID or LoRa module allows the antenna circuit to open / close when the miniature rupture disc breaks, sending a signal to the remote monitoring system.

[0116] Example 3:

[0117] Figure 7 This is a schematic diagram of the terminal device described in an embodiment of this application.

[0118] like Figure 7 As shown, this application provides a terminal device, including a processor and a memory;

[0119] Memory is used to store program code and transfer the program code to the processor;

[0120] The processor is used to execute the aforementioned intelligent gas sealing monitoring method for power equipment based on stored gas, according to instructions in the program code.

[0121] It should be noted that the processor is used to execute the steps in the above-described embodiment of an intelligent monitoring method for gas sealing of power equipment based on stored gas, according to the instructions in the program code. Alternatively, when the processor executes the computer program, it implements the functions of each module / unit in the above-described system / device embodiments.

[0122] For example, a computer program can be divided into one or more modules / units, one or more of which are stored in memory and executed by a processor to complete this application. One or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in a terminal device.

[0123] Terminal devices can be computing devices such as desktop computers, laptops, handheld computers, and cloud servers. Terminal devices may include, but are not limited to, processors and memory. Those skilled in the art will understand that this does not constitute a limitation on the terminal device, which may include more or fewer components than illustrated, or combinations of certain components, or different components. For example, a terminal device may also include input / output devices, network access devices, buses, etc.

[0124] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0125] Memory can be an internal storage unit of a terminal device, such as a hard drive or RAM. Memory can also be an external storage device, such as a plug-in hard drive, SmartMedia Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, memory can include both internal and external storage units. Memory is used to store computer programs and other programs and data required by the terminal device. Memory can also be used to temporarily store data that has been output or will be output.

[0126] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0128] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0129] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0130] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0131] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for intelligent monitoring of gas tightness in power equipment based on stored gas, applied to power equipment storing gas, characterized in that, The gas flange valve port of the gas chamber in the power equipment is snapped together with the magnetic coupling sealing cover. A fusion detection element is installed inside the magnetic coupling sealing cover. The intelligent gas sealing monitoring method includes the following steps: The fusion detection element is used to obtain the first gas concentration, the second gas concentration, and the cumulative acquisition time in the gas cavity of the power equipment, as well as the temperature data of the environment where the fusion detection element is located. The dew point temperature is calculated based on the temperature data. The relative gas leakage rate is calculated based on the first gas concentration, the second gas concentration, and the cumulative collection time. Whether the gas stored in the gas chamber of the power equipment is leaking is determined based on the dew point temperature or the relative gas leakage rate.

2. The intelligent monitoring method for gas sealing of power equipment based on stored gas according to claim 1, characterized in that, Based on the temperature data, the dew point temperature is calculated as follows: Obtain the first temperature coefficient and the second temperature coefficient, and calculate the temperature and humidity correlation coefficient based on the first temperature coefficient, the second temperature coefficient and the temperature data; The dew point temperature is calculated based on the first temperature coefficient, the second temperature coefficient, and the temperature-humidity correlation coefficient.

3. The intelligent monitoring method for gas sealing of power equipment based on stored gas according to claim 2, characterized in that, Also includes: The temperature-humidity correlation coefficient is calculated using a correlation coefficient formula based on the first temperature coefficient, the second temperature coefficient, and the temperature data; the dew point temperature is calculated using a temperature formula based on the first temperature coefficient, the second temperature coefficient, and the temperature-humidity correlation coefficient; the correlation coefficient formula is as follows: The temperature formula is: In the formula, α(T, RH) is the temperature-humidity correlation coefficient, a is the first temperature coefficient, b is the second temperature coefficient, and T is the temperature data. d This is the dew point temperature.

4. The intelligent monitoring method for gas sealing of power equipment based on stored gas according to claim 1, characterized in that, Also includes: The relative gas leakage rate is calculated using the leakage rate formula based on the first gas concentration, the second gas concentration, and the cumulative collection time; the leakage rate formula is: In the formula, γ is the relative gas leakage rate, C1 is the first gas concentration, C2 is the second gas concentration, and Δt is the cumulative sampling time between the first gas concentration and the second gas concentration.

5. The intelligent monitoring method for gas tightness of power equipment based on stored gas according to any one of claims 1-4, characterized in that, A micro-adsorption element for sealing the gas flange valve port is provided between the gas flange valve port and the magnetic coupling sealing cover. The intelligent gas sealing monitoring method further includes: if the relative gas leakage rate is greater than the leakage rate threshold, it is determined that there is a leak in the gas stored in the gas chamber of the power equipment, and the micro-adsorption element is controlled to release sealing material to seal the leakage gap of the gas flange valve port.

6. A power device based on stored gas, characterized in that, It includes a gas chamber for storing gas, a gas flange valve port of the gas chamber is snapped to a magnetic coupling sealing cover, a micro adsorption element for sealing the gas flange valve port is provided between the gas flange valve port and the magnetic coupling sealing cover, the micro adsorption element includes a composite filter element for adsorbing leaked gas and a filler for sealing gas leak gaps, and a fusion detection element and an intelligent monitoring module are provided inside the magnetic coupling sealing cover; The fusion detection element is used to collect gas data in the gas cavity and temperature data of the environment in which the fusion detection element is located. The intelligent monitoring module is used to process the gas data and the temperature data according to the intelligent gas sealing monitoring method for power equipment based on stored gas as described in any one of claims 1-5, to obtain the dew point temperature and the relative gas leakage rate for determining whether the gas in the gas cavity is leaking.

7. The gas-based power device according to claim 6, characterized in that, The fusion detection element is a detection element composed of a miniature sensor array formed by multiple sensor elements. A micron-level flow channel network matching the multiple sensor elements is provided inside the magnetic coupling sealing cover. The flow channels of the micron-level flow channel network are used to guide the gas flow out of the gas flange valve port.

8. The gas-based power equipment according to claim 6, characterized in that, The fusion detection element is transmitted via I 2 The C / SPI bus is connected to the intelligent monitoring module, and the I 2 A signal anti-interference module is provided on the C / SPI bus. The signal anti-interference module includes a pull-up resistor and a decoupling capacitor connected in parallel with the pull-up resistor.

9. The power equipment based on stored gas according to claim 6, characterized in that, The intelligent monitoring module includes a leakage monitoring submodule, a blasting triggering submodule, a sealing execution submodule, and an alarm and communication submodule connected in sequence. The leakage monitoring submodule is used to process the gas data and the temperature data according to the intelligent gas sealing monitoring method for power equipment based on stored gas as described in any one of claims 1-5, to obtain the dew point temperature and the relative gas leakage rate for determining whether the gas in the gas cavity is leaking. The explosion triggering submodule is used to determine that there is a leak in the gas stored in the gas chamber of the power equipment when the relative gas leakage rate is greater than the leakage rate threshold. The sealing execution submodule is used to control the micro-adsorption element to release sealing material to seal the leakage gap of the gas flange valve port; The alarm and communication submodule is used to issue an alarm based on the determination that there is a leak of stored gas in the gas chamber of the power equipment.

10. A terminal device, characterized in that, Including the processor and memory; The memory is used to store program code and transmit the program code to the processor; The processor is configured to execute the intelligent gas sealing monitoring method for power equipment based on stored gas as described in any one of claims 1-5, according to the instructions in the program code.

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