Method for improving SF6 gas supplementing efficiency of GIS equipment

Abstract

The invention provides a method for improving the SF6 gas supplementing efficiency of GIS equipment, and relates to the technical field of GIS equipment operation and maintenance. According to the method, a terrain-adaptive intelligent transportation system is designed, the terrain limitation of a traditional carrying mode is broken through, and the transportation efficiency is improved; a PID closed-loop temperature control and inflation cooperative control strategy is constructed, the temperature control precision is improved, the inflation time is shortened, and the gas utilization rate is increased; meanwhile, a full-process digital management platform is developed, gas supply operation total-factor digitalization is achieved, operation data full-life-cycle management is achieved, the recording accuracy is improved, and the fault tracing efficiency is improved; in addition, a standardized quick connector set is designed to be matched with interfaces of GIS equipment of multiple manufacturers, and the air supply efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of GIS equipment operation and maintenance technology, and in particular to a method for improving the SF6 gas replenishment efficiency of GIS equipment. Background Technology

[0002] With the intelligent upgrading of power grids, GIS (Gas Insulated Metal-enclosed Switchgear) has become the mainstream equipment in substations due to its advantages of small footprint and high reliability. However, the SF6 gas leakage problem in its sealed gas chamber leads to an increase in the frequency of gas replenishment operations. Traditional manual gas replenishment methods have drawbacks such as low efficiency, high risk, and lagging data management. According to statistics, the annual SF6 gas replenishment volume in domestic substations is increasing at a rate of 15%, while the existing gas replenishment process takes an average of 82 minutes, which has become a bottleneck restricting the efficiency of equipment operation and maintenance. Therefore, exploring efficient gas replenishment technology has significant engineering application value. Summary of the Invention

[0003] In view of the above problems, this application is made in order to provide a method for improving the SF6 gas replenishment efficiency of GIS equipment to overcome or at least partially solve the above problems, thereby improving the operation and maintenance efficiency of GIS equipment.

[0004] This application provides a method for improving the SF6 gas supply efficiency of GIS equipment, the method comprising: Design an intelligent transportation system that adapts to terrain; Construct a PID closed-loop temperature control and inflation coordinated control strategy; Develop a full-process digital management platform to achieve full digitalization of all elements of gas replenishment operations; Design standardized quick-connect assemblies to match the interfaces of GIS equipment from multiple manufacturers.

[0005] In one possible implementation, an intelligent transportation system that adapts to terrain is designed, including: Design a single-axle, six-wheeled all-terrain transport vehicle for the complex micro-terrain of the substation; A weighing module and tilt sensor are integrated into a single-axle six-wheel all-terrain transport vehicle to achieve intelligent sensing and display the gas cylinder weight change curve in real time. When the tilt angle is greater than 12°, an audible and visual alarm is automatically triggered. The weighing module has an accuracy of ±0.5kg, and the tilt sensor has an accuracy of ±0.1°. The hydraulic lifting platform of the single-axle six-wheel all-terrain transport vehicle has a travel of 0.5-2.5 meters, supports stepless adjustment of the air cylinder height, is compatible with the installation height of the air replenishment port of GIS equipment, and can be lifted by a single person through a handheld terminal.

[0006] In one possible implementation, the complex micro-terrain includes steps, cable trenches, and gravel roads; the single-axle six-wheel all-terrain transport vehicle adopts six-wheel independent suspension and differential steering mechanism, with a minimum turning radius of 1.2 meters, can climb 30° steps, and has an equivalent height of 18cm; when passing through a 15cm wide cable trench, the chassis ground clearance is maintained at >5cm.

[0007] In one possible implementation, a PID closed-loop temperature control and inflation coordinated control strategy is constructed, including: Establish a multivariate coupled model of temperature, pressure, and flow rate, and design an intelligent temperature-controlled inflation system.

[0008] In one possible implementation, a multivariate coupled model of temperature, pressure, and flow rate is established to design an intelligent temperature-controlled inflation system, including: The gas cylinder is wrapped with a carbon fiber heating blanket and equipped with a PT100 temperature sensor. A PID controller is used to achieve a temperature control accuracy of ±1℃. A pressure sensor is used to collect the air chamber pressure in real time. When it approaches the rated value, it automatically switches to a micro-inflation mode of 0.05L / min to avoid over-inflation. The pressure sensor has a range of 0-1.6MPa and an accuracy of 0.25. The system integrates a micro-moisture detection module, with a dew point temperature measurement range of -60℃ to +20℃ and an accuracy of ±2℃. When the dew point is detected to be greater than -40℃, the system automatically closes the inflation valve and sounds an alarm to prevent excessive moisture from causing equipment corrosion.

[0009] In one possible implementation, a full-process digital management platform is developed to digitize all elements of the gas replenishment operation, including: Construct a three-in-one data interconnection system integrating QR code identification, cloud database, and mobile terminal to achieve full digitalization of gas replenishment operations.

[0010] In one possible implementation, a three-in-one data interconnection system integrating QR code identification, cloud database, and mobile terminal is constructed to achieve full digitization of gas replenishment operations, including: A unique QR code is generated for each substation, and multiple parameters are stored in a cloud database; When the plan is to replenish the gas supply to the GIS equipment of the target substation, the mobile terminal downloads the QR code of the target substation from the cloud database, then scans the QR code, automatically retrieves historical data and generates a work order, and the tool list automatically matches the GIS equipment model.

[0011] In one possible implementation, the method further includes: By integrating a positioning module onto the gas cylinder, the location trajectory of the gas cylinder can be displayed in real time on a mobile terminal. An automatic warning is issued if the cylinder remains abnormally for more than 10 minutes, solving the problem of gas cylinder loss or misplacement in the traditional mode.

[0012] In one possible implementation, a standardized quick-connect assembly is designed to match interfaces of GIS equipment from multiple manufacturers, including: To address the interface differences between GIS equipment from various manufacturers, a six-in-one universal adapter was developed and designed as a standardized quick-connect assembly.

[0013] In one possible implementation, the six-in-one universal adapter integrates six preset mainstream interfaces, passes the API 6A standard sealing test, and has a leakage rate of <5×10⁻⁶. -9 Pa m 3 / s; adopts a spring self-sealing structure, insertion and extraction force <20N, replacement time <30 seconds; built-in one-way valve, automatically closes the air path when disconnected.

[0014] By employing the above technical solutions, the SF6 gas replenishment efficiency improvement method for GIS equipment provided in this application embodiment designs an intelligent transportation system that adapts to terrain, breaking through the terrain limitations of traditional handling modes and achieving improved transportation efficiency; it constructs a PID closed-loop temperature control and gas filling collaborative control strategy to improve temperature control accuracy, shorten gas filling time, and increase gas utilization; simultaneously, it develops a full-process digital management platform to realize the digitization of all elements of gas replenishment operations, achieve full lifecycle management of operation data, improve recording accuracy, and enhance fault tracing efficiency; in addition, it designs standardized quick-connect couplings to match interfaces of GIS equipment from multiple manufacturers, thereby improving gas replenishment efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below.

[0016] Figure 1 A flowchart of the method for improving SF6 gas replenishment efficiency of GIS equipment provided in this application embodiment is shown.

[0017] Figure 2 The comparison between the gas replenishment process before and after optimization provided in the embodiments of this application is shown. Detailed Implementation

[0018] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the term "comprising" and its variations should be interpreted as open-ended terms meaning "including but not limited to."

[0020] Through field research, the inventors discovered that traditional Qi replenishment procedures include the following core steps: ① Equipment identification and connector matching: Relying on manual querying of paper ledgers or historical records, it takes 6 minutes to complete model confirmation. Due to the lack of uniformity in manufacturer interface standards, 6-8 types of connectors need to be carried, and the matching error rate reaches 15%.

[0021] ② Tool preparation: Estimate the gas replenishment amount based on experience. 23% of the operations result in insufficient or excessive gas filling, requiring secondary gas replenishment. At the same time, it is necessary to manually check tools such as pressure gauges and wrenches, which takes an average of 8 minutes.

[0022] ③ Gas cylinder transportation: Two-wheeled handcarts or manual carrying are used. In scenarios with a slope greater than 15° or the presence of cable trenches, about 40% of the 15-minute transportation time is spent overcoming terrain obstacles. Even with three people working together, there is still a risk of tipping over.

[0023] ④ Inflation operation: For every 5°C decrease in ambient temperature, the saturated vapor pressure of SF6 gas decreases by about 12%, resulting in a 30%-50% decrease in inflation speed. Multiple pauses are required to adjust the pressure reducing valve. Operational errors may cause the gas chamber pressure to exceed the limit.

[0024] ⑤ Data Management: Manually filling out the gas replenishment operation record sheet takes an average of 5 minutes. 18% of the records have problems with missing information or illegible handwriting. Historical data tracing takes more than 30 minutes.

[0025] Root cause analysis of the work process using quality management tools revealed four core bottlenecks as follows: At the equipment level: insufficient terrain adaptability of transportation vehicles (accounting for 28% of efficiency loss), low accuracy of temperature control equipment (±3℃), and poor standardization of connectors (compatibility rate of only 72%).

[0026] At the process level: data is isolated in each stage and lacks a real-time linkage mechanism. For example, the inflation volume cannot be dynamically adjusted according to the remaining gas volume in the cylinder.

[0027] Environmental factors: The temperature difference in the outdoor working area of ​​the substation can reach 15℃ / day. Traditional water bath heating methods have a slow response and a temperature control delay of up to 20 minutes.

[0028] Management level: There is a lack of an operation quality traceability system, the gas replenishment effect needs to be confirmed by the next day's inspection, and the handling of abnormalities is delayed.

[0029] To address the aforementioned technical problems, this application provides a method for improving the SF6 gas replenishment efficiency of GIS equipment, such as... Figure 1 As shown, the method for improving the SF6 gas supply efficiency of the GIS equipment may include the following steps S101 to S104: Step S101: Design an intelligent transportation system that adapts to terrain; Step S102: Construct a PID closed-loop temperature control and inflation coordinated control strategy; In this step, PID stands for Proportional-Integral-Derivative. Step S103: Develop a full-process digital management platform to realize the digitalization of all elements of gas replenishment operations; Step S104: Design standardized quick connector assemblies to match the interfaces of GIS equipment from multiple manufacturers.

[0030] This embodiment designs an intelligent transportation system that adapts to terrain, breaking through the terrain limitations of traditional handling modes and improving transportation efficiency. It constructs a PID closed-loop temperature control and inflation-coordinated control strategy to improve temperature control accuracy, shorten inflation time, and increase gas utilization. Simultaneously, it develops a full-process digital management platform to digitize all elements of the gas replenishment operation, enabling full lifecycle management of operation data, improving recording accuracy, and enhancing fault tracing efficiency. Furthermore, it designs standardized quick-connect couplings to match interfaces with GIS equipment from multiple manufacturers, further improving gas replenishment efficiency.

[0031] This application provides a possible implementation method. Step S101 involves designing an intelligent transportation system that adapts to terrain, which may specifically include the following steps: Design a single-axle, six-wheeled all-terrain transport vehicle for the complex micro-terrain of the substation; A weighing module and tilt sensor are integrated into a single-axle six-wheel all-terrain transport vehicle to achieve intelligent sensing and display the gas cylinder weight change curve in real time. When the tilt angle is greater than 12°, an audible and visual alarm is automatically triggered. The weighing module has an accuracy of ±0.5kg, and the tilt sensor has an accuracy of ±0.1°. The hydraulic lifting platform of the single-axle six-wheel all-terrain transport vehicle has a travel range of 0.5-2.5 meters and supports stepless adjustment of the air cylinder height, adapting to the installation height of the air inlet of GIS equipment. A single person can complete the lifting operation via a handheld terminal. The common range for the installation height of the air inlet of GIS equipment is 1.2-2.0 meters.

[0032] This application provides a possible implementation method. The complex micro-terrain includes steps, cable trenches, and gravel roads. The single-axle six-wheel all-terrain transport vehicle adopts six-wheel independent suspension and differential steering mechanism, with a minimum turning radius of 1.2 meters, can climb 30° steps, and has an equivalent height of 18cm. When passing through a 15cm wide cable trench, the chassis ground clearance is maintained at >5cm.

[0033] This application embodiment provides a possible implementation method. Step S102, which constructs a PID closed-loop temperature control and inflation coordinated control strategy, may specifically include the following steps: Establish a multivariate coupled model of temperature, pressure, and flow rate, and design an intelligent temperature-controlled inflation system.

[0034] This application provides a possible implementation method, which involves establishing a multivariate coupled model of temperature, pressure, and flow rate, and designing an intelligent temperature-controlled inflation system. Specifically, this may include the following steps: The gas cylinder is wrapped with a carbon fiber heating blanket, and a PT100 temperature sensor is used in conjunction with a PID controller to achieve a temperature control accuracy of ±1℃. Here, the power density of the carbon fiber heating blanket is 800W / m². 2 The PT100 platinum resistance thermometer is a temperature sensor with a resistance of 100 ohms at 0℃. The accuracy of the PT100 temperature sensor is ±0.1℃. The PID controller has a proportional gain Kp=2.5, an integral time Ti=120s, and a derivative time Td=30s. A pressure sensor is used to collect the air chamber pressure in real time. When it approaches the rated value, it automatically switches to a micro-inflation mode of 0.05L / min to avoid over-inflation. The pressure sensor has a range of 0-1.6MPa and an accuracy of 0.25 grade. The rated value error here is ±0.02MPa. The system integrates a micro-moisture detection module, with a dew point temperature measurement range of -60℃ to +20℃ and an accuracy of ±2℃. When the dew point is detected to be greater than -40℃, the system automatically closes the inflation valve and sounds an alarm to prevent excessive moisture from causing equipment corrosion.

[0035] This application embodiment provides a possible implementation method. Step S103 involves developing a full-process digital management platform to realize the digitalization of all elements of gas replenishment operations, specifically including the following steps: Construct a three-in-one data interconnection system integrating QR code identification, cloud database, and mobile terminal to achieve full digitalization of gas replenishment operations.

[0036] This application provides a possible implementation method for constructing a three-in-one data interconnection system of QR code identification, cloud database, and mobile terminal to realize the full digitization of gas replenishment operations. Specifically, it may include the following steps: A unique QR code is generated for each substation, and multiple parameters are stored in the cloud database. Here, QR stands for Quick Response. The multiple parameters may include 47 parameters such as GIS equipment model, gas replenishment cycle (calculated based on GB / T26860-2011 standard), and historical gas replenishment records. When the plan is to replenish the gas supply to the GIS equipment of the target substation, the mobile terminal downloads the QR code of the target substation from the cloud database, then scans the QR code, automatically retrieves historical data and generates a work order, and the tool list automatically matches the GIS equipment model.

[0037] This application provides a possible implementation method that integrates a positioning module on the gas cylinder, displays the gas cylinder's location trajectory in real time on a mobile terminal, and automatically issues an early warning if the abnormal stay exceeds 10 minutes, thus solving the problem of gas cylinder loss or misplacement in the traditional mode.

[0038] This application embodiment provides a possible implementation method. Step S104 involves designing a standardized quick-connect assembly to match the interfaces of GIS equipment from multiple manufacturers. Specifically, this includes the following steps: To address the interface differences between GIS equipment from various manufacturers, a six-in-one universal adapter was developed and designed as a standardized quick-connect assembly.

[0039] This application provides a possible implementation method: a six-in-one universal adapter integrates six preset mainstream interfaces, passes the API6A standard sealing test, and has a leakage rate of <5×10⁻⁶. -9 Pa m 3 / s; It adopts a spring self-sealing structure, with an insertion and extraction force of <20N and a replacement time of <30 seconds; It has a built-in one-way valve that automatically closes the air path when disconnected, preventing residual gas leakage and significantly improving operational safety.

[0040] This application provides one possible implementation method, and can also achieve the following: Deep integration with the Internet of Things: Integrating 5G communication modules to establish a remote monitoring center for gas replenishment operations, acquiring more than 20 parameters such as temperature and pressure in real time, and enabling remote intervention in abnormal operating conditions.

[0041] Predictive maintenance expansion: Based on historical gas replenishment data, a leak prediction model is built, combined with online monitoring data of micro-leakage from GIS equipment, to provide early warning of gas replenishment needs 7-15 days in advance, transforming passive maintenance into proactive operation and maintenance.

[0042] Green technology extension: Develop SF6 gas regeneration and purification module, integrate it with gas replenishment system to achieve a waste gas recovery rate of >95%, and further reduce environmental impact.

[0043] The above introduces Figure 1The embodiments shown have various implementation methods for each step. The following will further explain the method for improving the SF6 gas replenishment efficiency of GIS equipment according to the embodiments of this application through specific embodiments.

[0044] In a specific embodiment, the method for improving the efficiency of gas replenishment is as follows: 1) Design an intelligent transportation system that adapts to terrain For substations with complex micro-terrain (steps, cable trenches, gravel roads), a single-axle six-wheel all-terrain transport vehicle was developed and designed, specifically including: Mechanical structure: It adopts a six-wheel independent suspension and differential steering mechanism, with a minimum turning radius of 1.2 meters, can climb 30° steps (equivalent height 18cm), and maintains a ground clearance of >5cm when passing through a 15cm wide cable trench.

[0045] Intelligent sensing: It integrates a high-precision weighing module (accuracy of ±0.5kg) and an tilt sensor (accuracy of ±0.1°) to display the gas cylinder weight change curve in real time. When the tilt angle is >12°, it automatically triggers an audible and visual alarm.

[0046] Ergonomics: The hydraulic lifting platform has a stroke of 0.5-2.5 meters, supports stepless adjustment of gas cylinder height, and is compatible with the installation height of the air inlet of GIS equipment (common range of 1.2-2.0 meters). A single person can complete the lifting operation through a handheld terminal.

[0047] 2) Construct a PID closed-loop temperature control and inflation coordinated control strategy Establish a multivariate coupled model of temperature, pressure, and flow rate, and design an intelligent temperature-controlled inflation system.

[0048] Temperature control module: Uses carbon fiber heating blanket (power density 800W / m³) 2 The gas cylinder is wrapped with a PT100 temperature sensor (accuracy ±0.1℃) and a PID controller (proportional coefficient Kp=2.5, integral time Ti=120s, derivative time Td=30s) to achieve a temperature control accuracy of ±1℃.

[0049] Inflation control: The pressure sensor (range 0-1.6MPa, accuracy 0.25) collects the air chamber pressure in real time. When it approaches the rated value (error ±0.02MPa), it automatically switches to the micro-inflation mode of 0.05L / min to avoid over-inflation.

[0050] Quality Assurance: Integrated micro-moisture detection module (dew point temperature measurement range -60℃~+20℃, accuracy ±2℃). When the dew point is detected to be >-40℃, the system automatically closes the inflation valve and sounds an alarm to prevent excessive moisture from causing equipment corrosion.

[0051] 3) Development of a full-process digital management platform Construct a three-in-one data interconnection system integrating QR code identification, cloud database, and mobile terminal to achieve full digitalization of gas replenishment operations.

[0052] Asset digitization: A unique QR code is generated for each substation, storing 47 parameters such as GIS equipment model, gas replenishment cycle (calculated based on GB / T26860-2011 standard), and historical gas replenishment records. The QR code recognition accuracy rate reaches 99.9%.

[0053] Intelligent work order system: By scanning a QR code through a mini-program, historical data is automatically retrieved and work orders are generated. The tool list is automatically matched with the equipment model, reducing preparation time from 8 minutes to 3 minutes and the error rate from 23% to 0.

[0054] Logistics tracking module: Integrates Beidou / GPS (Global Positioning System) dual-mode positioning (accuracy ≤5m), displays the real-time location trajectory of gas cylinders, and automatically issues an alert if abnormal lingering for more than 10 minutes, solving the problem of lost or misplaced gas cylinders in the traditional mode.

[0055] 4) Design standardized quick-connect assembly To address the differences in interface between equipment from various manufacturers, a six-in-one universal adapter has been developed, with the following technical specifications: Interface compatibility: Integrates 6 mainstream interfaces including DN20, M27×2, and G3 / 4, and passes the API6A standard sealing test with a leakage rate of <5×10⁻⁶. -9 Pa m 3 / s (better than the national standard requirement of 1×10) -8 Pa m 3 / s).

[0056] Ease of operation: It adopts a spring self-sealing structure, with insertion and extraction force <20N and replacement time <30 seconds, which improves efficiency by 80% compared with traditional threaded connections.

[0057] Safety features: Built-in one-way valve automatically closes the gas path when disconnected, preventing residual gas leakage and significantly improving operational safety.

[0058] A comparative test conducted at a 110kV substation, using data from 10 traditional operations and 10 optimized operations, showed that the optimized gas replenishment process significantly reduced the time required for each step (such as connector matching, tool preparation, cylinder transportation, filling operation, and data recording). Figure 2 As shown, this solution reduces the total gas replenishment time from 82 minutes to 51 minutes, improving efficiency by 37.8%.

[0059] This embodiment constructs a full-process optimization scheme for SF6 gas replenishment of GIS equipment through equipment intelligence and process reconstruction, achieving the following technical effects: Transportation equipment innovation: The single-axle six-wheel all-terrain transport vehicle breaks through the terrain limitations of traditional handling modes, achieving a 46.4% increase in transportation efficiency.

[0060] Breakthrough in temperature control technology: The PID closed-loop system improves temperature control accuracy to ±1℃, reduces inflation time by 26.8%, and increases gas utilization by 24%.

[0061] Digital management upgrade: The cloud-based QR code system enables full lifecycle management of work data, with a recording accuracy of 100% and a fault tracing efficiency improvement of over 90%.

[0062] It should be noted that the sequence numbers of the steps in the above embodiments do 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 this application. In practical applications, all the above possible implementation methods can be arbitrarily combined in a combined manner to form possible embodiments of this application, which will not be described in detail here.

[0063] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that within the spirit and principles of this application, 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 therein; and these modifications or substitutions do not cause the corresponding technical solutions to leave the protection scope of this application.

Claims

1. A method for improving the SF6 gas supply efficiency of GIS equipment, characterized in that, The method includes: Design an intelligent transportation system that adapts to terrain; Construct a PID closed-loop temperature control and inflation coordinated control strategy; Develop a full-process digital management platform to achieve full digitalization of all elements of gas replenishment operations; Design standardized quick-connect assemblies to match the interfaces of GIS equipment from multiple manufacturers.

2. The method of claim 1, wherein, Design an intelligent transportation system that adapts to terrain, including: Design a single-axle, six-wheeled all-terrain transport vehicle for the complex micro-terrain of the substation; A weighing module and tilt sensor are integrated into a single-axle six-wheel all-terrain transport vehicle to achieve intelligent sensing and display the gas cylinder weight change curve in real time. When the tilt angle is greater than 12°, an audible and visual alarm is automatically triggered. The weighing module has an accuracy of ±0.5kg, and the tilt sensor has an accuracy of ±0.1°. The hydraulic lifting platform of the single-axle six-wheel all-terrain transport vehicle has a travel of 0.5-2.5 meters, supports stepless adjustment of the air cylinder height, is compatible with the installation height of the air replenishment port of GIS equipment, and can be lifted by a single person through a handheld terminal.

3. The method of claim 2, wherein, Complex micro-terrain includes steps, cable trenches, and gravel roads; the single-axle six-wheel all-terrain transport vehicle adopts six-wheel independent suspension and differential steering mechanism, with a minimum turning radius of 1.2 meters, can climb 30° steps, and has an equivalent height of 18cm; when passing through a 15cm wide cable trench, the chassis ground clearance is maintained at >5cm.

4. The method of claim 1, wherein, A PID closed-loop temperature control and inflation coordinated control strategy is constructed, including: Establish a multivariate coupled model of temperature, pressure, and flow rate, and design an intelligent temperature-controlled inflation system.

5. The method of claim 4, wherein, Establish a multivariate coupled model of temperature, pressure, and flow rate, and design an intelligent temperature-controlled inflation system, including: The gas cylinder is wrapped with a carbon fiber heating blanket and equipped with a PT100 temperature sensor. A PID controller is used to achieve a temperature control accuracy of ±1℃. A pressure sensor is used to collect the air chamber pressure in real time. When it approaches the rated value, it automatically switches to a micro-inflation mode of 0.05L / min to avoid over-inflation. The pressure sensor has a range of 0-1.6MPa and an accuracy of 0.

25. The system integrates a micro-moisture detection module, with a dew point temperature measurement range of -60℃ to +20℃ and an accuracy of ±2℃. When the dew point is detected to be greater than -40℃, the system automatically closes the inflation valve and sounds an alarm to prevent excessive moisture from causing equipment corrosion.

6. The method of claim 1, wherein, Develop a full-process digital management platform to achieve full digitalization of all elements of gas replenishment operations, including: Construct a three-in-one data interconnection system integrating QR code identification, cloud database, and mobile terminal to achieve full digitalization of gas replenishment operations.

7. The method of claim 6, wherein, Constructing a three-in-one data interconnection system integrating QR code identification, cloud database, and mobile terminals to achieve full digitization of gas replenishment operations, including: A unique QR code is generated for each substation, and multiple parameters are stored in a cloud database; When the plan is to replenish the gas supply to the GIS equipment of the target substation, the mobile terminal downloads the QR code of the target substation from the cloud database, then scans the QR code, automatically retrieves historical data and generates a work order, and the tool list automatically matches the GIS equipment model.

8. The method of claim 7, wherein, The method further includes: By integrating a positioning module onto the gas cylinder, the location trajectory of the gas cylinder can be displayed in real time on a mobile terminal. An automatic warning is issued if the cylinder remains abnormally for more than 10 minutes, solving the problem of gas cylinder loss or misplacement in the traditional mode.

9. The method of claim 1, wherein, Design standardization quick joint group, match the interface of multi-factory GIS equipment, including: In view of the interface difference of multi-factory GIS equipment, develop and design six-in-one universal conversion joint as standardization quick joint group.

10. The method of claim 9, wherein, The 6-in-1 universal adapter integrates six preset mainstream interfaces, passes the API 6A standard sealing test, and has a leakage rate of <5×10⁻⁶. -9 Pa m 3 / s; adopts a spring self-sealing structure, insertion and extraction force <20N, replacement time <30 seconds; built-in one-way valve, automatically closes the air path when disconnected.

Images