Sulfur hexafluoride on-site recovery operation monitoring system

Abstract

The utility model provides a sulfur hexafluoride on-site recovery operation monitoring system, which is respectively connected with sulfur hexafluoride electrical equipment and a sulfur hexafluoride recovery device, and comprises a measurement base which is provided with a gas inlet end, a gas outlet end and an inner cavity, the gas inlet end is communicated with a recovery port of the sulfur hexafluoride electrical equipment and the inner cavity, and the gas outlet end is communicated with a gas outlet of the sulfur hexafluoride electrical equipment; the gas outlet end is communicated with a recovery pipeline of the sulfur hexafluoride recovery device and the inner cavity; the pressure sensor is mounted on the measuring base, is connected with the inner cavity and is used for detecting the pressure of the sulfur hexafluoride gas in the inner cavity in real time so as to obtain recovery pressure data; and the controller is connected with the pressure sensor and is used for processing the recovery pressure data to obtain the dynamic recovery rate of the sulfur hexafluoride gas in the whole recovery process. Therefore, real-time monitoring of the sulfur hexafluoride gas recovery operation process is realized, and the recovery rate data in the recovery process can be obtained in time, so that when the recovery rate data does not reach the standard, further countermeasures can be taken in time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sulfur hexafluoride gas recovery, and particularly relates to a sulfur hexafluoride field recovery operation monitoring system. BACKGROUND

[0002] Sulfur hexafluoride gas is widely used in power equipment, such as gas insulated switchgear, circuit breaker and the like, due to its excellent insulation and arc extinguishing performance. However, sulfur hexafluoride gas is a strong greenhouse gas, and its global warming potential (GWP) is 23900 times that of carbon dioxide. Therefore, the recovery and treatment of sulfur hexafluoride gas are of great significance for environmental protection and greenhouse gas emission reduction.

[0003] The existing sulfur hexafluoride gas recovery operation mode is generally to directly connect the recovery pipeline of a sulfur hexafluoride recovery device with a recovery port of a sulfur hexafluoride electrical equipment to perform recovery of sulfur hexafluoride gas. Therefore, the existing sulfur hexafluoride gas recovery operation mode lacks effective real-time monitoring means, so that key indicators in the recovery process, such as recovery rate, cannot be learned in time whether they meet the standard requirements. CONTENT OF THE UTILITY MODEL

[0004] Embodiments of the present application provide a sulfur hexafluoride field recovery operation monitoring system to solve the problem of the lack of effective real-time monitoring means in the existing sulfur hexafluoride gas recovery operation mode.

[0005] Embodiments of the present application provide a sulfur hexafluoride field recovery operation monitoring system, which is connected with a sulfur hexafluoride electrical equipment and a sulfur hexafluoride recovery device respectively, and comprises:

[0006] A measurement base has an air inlet end, an air outlet end and an inner cavity. The air inlet end is communicated with the recovery port of the sulfur hexafluoride electrical equipment and the inner cavity. The air outlet end is communicated with the recovery pipeline of the sulfur hexafluoride recovery device and the inner cavity.

[0007] A pressure sensor is installed on the measurement base and connected with the inner cavity, and is used for real-time detection of the pressure of sulfur hexafluoride gas in the inner cavity to obtain recovery pressure data. The recovery pressure data includes a pre-recovery pressure value, a post-recovery pressure value and at least one mid-recovery pressure value.

[0008] A controller is connected with the pressure sensor and is used for processing the recovery pressure data to obtain a dynamic recovery rate of sulfur hexafluoride gas in the entire recovery process.

[0009] Further, the system further comprises:

[0010] a flow meter installed between the gas outlet end of the measuring base and the recovery pipeline of the sulfur hexafluoride recovery device and connected with the controller, for detecting the flow of the sulfur hexafluoride gas flowing through the gas outlet end in real time to obtain recovery flow data, the recovery flow data including at least one flow value during recovery;

[0011] Correspondingly, the controller is further configured to process the recovery flow data to obtain a dynamic recovery amount of the sulfur hexafluoride gas during the entire recovery process.

[0012] Further, the system further comprises:

[0013] a gas comprehensive analyzer installed on a sampling branch between the gas outlet end of the measuring base and the recovery pipeline of the sulfur hexafluoride recovery device and connected with the controller, for detecting the quality of the sulfur hexafluoride gas flowing through the gas outlet end in real time to obtain recovery quality data, the recovery quality data including at least one quality value during recovery;

[0014] Correspondingly, the controller is further configured to process the recovery quality data to obtain a dynamic quality value of the sulfur hexafluoride gas during the entire recovery process.

[0015] Further, the system further comprises:

[0016] a gas comprehensive analyzer installed on a sampling branch between the flow meter and the recovery pipeline of the sulfur hexafluoride recovery device and connected with the controller, for detecting the quality of the sulfur hexafluoride gas flowing through the gas outlet end in real time to obtain recovery quality data, the recovery quality data including at least one quality value during recovery;

[0017] Correspondingly, the controller is further configured to process the recovery quality data to obtain a dynamic quality value of the sulfur hexafluoride gas during the entire recovery process.

[0018] Optionally, the flow meter is a volumetric flow meter or a mass flow meter.

[0019] Further, a shunt tee valve is arranged before the recovery pipeline of the sulfur hexafluoride recovery device, and the sampling branch is connected with one fluid outlet of the shunt tee valve.

[0020] Optionally, the shunt tee valve is an electric tee valve, and the shunt tee valve is connected with the controller to adjust the valve opening size according to the control of the controller.

[0021] Further, the system further comprises:

[0022] A user interface (UI) is connected to the controller and used to show the user the recycling operation data obtained by the controller and to obtain the operation instruction input by the user.

[0023] Further, the system further comprises:

[0024] A communication module is used to send the recycling operation data obtained by the controller to a power grid management background.

[0025] The embodiment of the utility model provides a kind of sulfur hexafluoride field recovery operation monitoring system, it is connected with sulfur hexafluoride electrical equipment and sulfur hexafluoride recovery device respectively, by setting measurement pedestal, on the one hand, the recovery port of sulfur hexafluoride electrical equipment and the recovery pipeline of sulfur hexafluoride recovery device are communicated, on the other hand, the hardware platform for real-time monitoring of sulfur hexafluoride gas in recovery process is provided;Then, by installing pressure sensor on measurement pedestal, the real-time detection of the pressure of the recovered sulfur hexafluoride gas can be realized;Further, the dynamic recovery rate of sulfur hexafluoride gas in the whole recovery process can be obtained by processing the pressure data collected by controller to pressure sensor.It is thus, the embodiment of the utility model realizes the real-time monitoring of sulfur hexafluoride gas recovery operation process, and recovery rate data in recovery process can be known in time, so that when recovery rate data is not up to standard, further response measure can be taken in time. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structure diagram of the sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is shown;

[0027] Figure 2 The structure diagram of another sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is shown;

[0028] Figure 3 The structure diagram of another sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is shown;

[0029] Figure 4 The structure diagram of another sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is shown;

[0030] Figure 5 The structure diagram of another sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is shown. DETAILED DESCRIPTION

[0031] The utility model will be made further detailed description in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not limit the utility model. In addition, the examples in the utility model and the features in the examples can be combined with each other without conflict. In addition, it needs to be explained that only the part related to the utility model is shown in the drawings for convenience of description, not all structures.

[0032] Figure 1 The structure diagram of a kind of sulfur hexafluoride field recovery operation monitoring system provided for the utility model embodiment. As Figure 1 It is shown that the system is connected with sulfur hexafluoride electrical equipment and sulfur hexafluoride recovery device respectively, specifically includes:

[0033] Measuring pedestal 101 has air inlet end, air outlet end and inner cavity, the air inlet end is communicated with the recovery port of the sulfur hexafluoride electrical equipment and the inner cavity, the air outlet end is communicated with the recovery pipeline of the sulfur hexafluoride recovery device and the inner cavity.

[0034] Optionally, the air inlet end and the air outlet end of measuring pedestal 101 are all sealed joint, measuring pedestal 101 has good sealing property, to prevent sulfur hexafluoride gas from leaking to external environment in recovery process.

[0035] It needs to be explained that the utility model does not limit the appearance of measuring pedestal 101, just meet the characteristics of having air inlet end, air outlet end and inner cavity.

[0036] Pressure sensor 102 is installed on measuring pedestal 101, is connected with the inner cavity, for the pressure of sulfur hexafluoride gas in the inner cavity is detected in real time, to obtain recovery pressure data, the recovery pressure data includes pre-recovery pressure value, post-recovery pressure value and at least one recovery pressure value.

[0037] Optionally, all recovery pressure data are absolute pressure value.

[0038] Controller 103 is connected with pressure sensor 102, for the recovery pressure data is handled, obtains the dynamic recovery rate of sulfur hexafluoride gas in entire recovery process.

[0039] Optionally, controller 103 can be programmable logic controller (PLC), microcontroller unit (MCU), digital signal processor (DSP) or other any type of processor.

[0040] Optionally, the communication connection between the controller 103 and the pressure sensor 102 can be wired or wireless. Wireless communication includes but is not limited to Wi-Fi, Bluetooth, 4G / 5G mobile communication; wired communication includes but is not limited to Ethernet, serial communication.

[0041] The controller 103 can be arranged inside the measuring base 101, or outside the measuring base 101. Figure 1 For example, the controller 103 is arranged outside the measuring base 101.

[0042] In one embodiment, when the controller 103 is connected to the pressure sensor through wireless communication, the controller 103 can also be deployed remotely.

[0043] It can be understood that according to the pressure method recovery rate calculation method recorded in the GB / T 44653-2024 Guidelines for On-site Recycling of Sulfur Hexafluoride (SF6) Gas, when the initial absolute pressure value and the final absolute pressure value of the sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment before and after the recovery operation are known, the recovery rate of the sulfur hexafluoride gas can be calculated according to the following formula:

[0044]

[0045] In the formula, R is the recovery rate of the sulfur hexafluoride gas, P 初 is the initial absolute pressure value of the sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment before the recovery operation, and P 终 is the final absolute pressure value of the sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment after the recovery operation. Therefore, by obtaining the pressure value at a certain time during the recovery process, and combining the above formula, the recovery rate corresponding to that time can be obtained. By continuously obtaining the pressure value of the sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment during the recovery process, the dynamic recovery rate can be obtained. The dynamic recovery rate can be understood as the recovery rate that changes dynamically with time during the entire recovery process.

[0046] The embodiment of the utility model provides a kind of sulfur hexafluoride field recovery operation monitoring system, it is connected with sulfur hexafluoride electrical equipment and sulfur hexafluoride recovery device respectively, by setting measurement pedestal, on the one hand, the recovery port of sulfur hexafluoride electrical equipment and the recovery pipeline of sulfur hexafluoride recovery device are communicated, on the other hand, the hardware platform for real-time monitoring of sulfur hexafluoride gas in recovery process is provided;Then, by installing pressure sensor on measurement pedestal, the real-time detection of the pressure of the recovered sulfur hexafluoride gas can be realized;Further, the dynamic recovery rate of sulfur hexafluoride gas in the entire recovery process can be obtained by processing the pressure data collected by controller to pressure sensor. Thus, the embodiment of the utility model realizes the real-time monitoring of sulfur hexafluoride gas recovery operation process, and the recovery rate data in recovery process can be known in time. When recovery rate data is not up to standard, further response measures can be taken in time.

[0047] Figure 2 It is another embodiment of the utility model provides a kind of sulfur hexafluoride field recovery operation monitoring system's structure schematic view, the embodiment is further optimized on the basis of above-mentioned embodiment.

[0048] As Figure 2 Indicated, the sulfur hexafluoride field recovery operation monitoring system provided by the embodiment is further optimized and increased on the basis of including measurement pedestal 201, pressure sensor 202 and controller 203: flowmeter 204. Among them,

[0049] Flowmeter 204 is installed between the gas outlet end of measurement pedestal 201 and the recovery pipeline of sulfur hexafluoride recovery device, and is connected with controller 203, for the flow of sulfur hexafluoride gas flowing through the gas outlet end is detected in real time, to obtain recovery flow data, the recovery flow data includes at least one recovery flow value;

[0050] Correspondingly, controller 203 is also used to process the recovery flow data, to obtain the dynamic recovery amount of sulfur hexafluoride gas in the entire recovery process.

[0051] Optionally, flowmeter 204 can be volumetric flowmeter, or mass flowmeter.

[0052] It can be understood that by setting flowmeter between the gas outlet end of measurement pedestal 201 and the recovery pipeline of sulfur hexafluoride recovery device, the flow of sulfur hexafluoride gas flowing through the gas outlet end of measurement pedestal 201 can be monitored in real time, after the summary and processing of controller 203, the recovery amount changing with time in the entire recovery process, i.e. the dynamic recovery amount, can be obtained.

[0053] In an embodiment, the flow meter is also configured to obtain a flow value before the recovery and a flow value after the recovery. In theory, the flow value before the recovery and the flow value after the recovery should be zero under normal circumstances. If the flow value before the recovery is not zero and / or the flow value after the recovery is not zero, it indicates that the sulfur hexafluoride electrical equipment has a sulfur hexafluoride leakage before the recovery and / or after the recovery, which can be used as a basis for sulfur hexafluoride leakage, so that timely measures can be taken.

[0054] The embodiment of the utility model further realizes the real-time monitoring of the recovery amount in the recovery process while realizing the real-time monitoring of the sulfur hexafluoride recovery rate in the sulfur hexafluoride gas recovery operation process on the basis of the foregoing embodiment.

[0055] Figure 3 Another structure diagram of the sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is provided, and the embodiment is further optimized on the basis of the foregoing embodiment.

[0056] As shown in Figure 3 The sulfur hexafluoride field recovery operation monitoring system provided by the embodiment further optimizes and adds a gas comprehensive analyzer 304 on the basis of the measurement base 301, the pressure sensor 302 and the controller 303. Among them,

[0057] The gas comprehensive analyzer 304 is installed on the sampling branch between the gas outlet end of the measurement base 301 and the recovery pipeline of the sulfur hexafluoride recovery device, and is connected with the controller 303, and is used for real-time detection of the quality of the sulfur hexafluoride gas flowing through the gas outlet end to obtain recovery quality data, the recovery quality data including at least one recovery quality value.

[0058] Correspondingly, the controller 303 is also used for processing the recovery quality data to obtain the dynamic quality value of the sulfur hexafluoride gas in the entire recovery process.

[0059] It can be understood that by setting the gas comprehensive analyzer, the recovered sulfur hexafluoride gas can be monitored and analyzed in real time. On the one hand, it can detect whether the sulfur hexafluoride gas contains other impurities or decomposition products such as SO2, HF, H2S, etc. On the other hand, it can detect the purity of the sulfur hexafluoride gas in real time. Therefore, the quality problems of the sulfur hexafluoride gas, such as insufficient purity or containing harmful impurities, can be found in time, so that timely measures can be taken. In addition, through real-time monitoring and analysis, the recovery process can be optimized, unnecessary operation steps can be reduced, and the recovery efficiency can be improved. For example, by finding the gas quality problem in advance, repeated operation and resource waste can be avoided. In addition, the gas comprehensive analyzer can also record the analysis results and data, so as to serve as a basis for gas quality control. These data can be used for subsequent audit and traceability to ensure that the recovered gas meets the environmental protection and safety requirements.

[0060] In an embodiment, the gas comprehensive analyzer is provided with an alarm function, when detecting abnormal gas composition or purity, the gas comprehensive analyzer can trigger the alarm system, and notify the operator through sound, light or text prompt and the like. For example, if the purity of SF6 gas is lower than the set value, the system will immediately issue a warning, prompting the operator to intervene.

[0061] In an embodiment, a split tee valve is arranged before the recovery pipeline of the sulfur hexafluoride recovery device, and the sampling branch is connected to one of the fluid outlets of the split tee valve.

[0062] Optionally, the split tee valve is an electric tee valve, and the split tee valve is connected to the controller 303 to adjust the valve opening size according to the control of the controller 303.

[0063] It can be understood that by arranging the split tee valve, a sampling node can be provided for the gas comprehensive analyzer. In addition, since the amount of gas used for gas analysis is small, the controller can send a control instruction to adjust the gas flow size on the sampling branch, thereby avoiding waste of gas.

[0064] The embodiment of the utility model further realizes real-time monitoring of the recovery quality in the recovery process, on the basis of the foregoing embodiment by additionally arranging the gas comprehensive analyzer, while realizing real-time monitoring of the sulfur hexafluoride recovery rate in the sulfur hexafluoride gas recovery operation process.

[0065] Figure 4 Another structure schematic view of the sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is provided, and the embodiment is further optimized on the basis of the foregoing embodiment.

[0066] As Figure 4 shown, the sulfur hexafluoride field recovery operation monitoring system provided by the embodiment is further optimized and increased by arranging a gas comprehensive analyzer 405 on the basis of the measuring base 401, the pressure sensor 402, the controller 403 and the flow meter 404. Among them,

[0067] The gas comprehensive analyzer 405 is arranged on the sampling branch between the flow meter 404 and the recovery pipeline of the sulfur hexafluoride recovery device, and is connected to the controller 403, and is used for real-time detection of the quality of the sulfur hexafluoride gas flowing through the gas outlet end, so as to obtain recovery quality data, and the recovery quality data includes at least one recovery quality value.

[0068] Correspondingly, the controller 403 is further used for processing the recovery quality data, so as to obtain the dynamic quality value of the sulfur hexafluoride gas in the whole recovery process.

[0069] In an embodiment, a split tee valve is arranged before the recovery pipeline of the sulfur hexafluoride recovery device, and the sampling branch is connected to one of the fluid outlets of the split tee valve.

[0070] Optionally, the split tee valve is an electric tee valve, and the split tee valve is connected to the controller 403 to adjust the valve opening size according to the control of the controller 403.

[0071] The embodiment of the utility model further realizes real-time monitoring of the recovery amount and recovery quality in the recovery process, on the basis of the foregoing embodiment by additionally arranging the flowmeter and the gas comprehensive analyzer.

[0072] Figure 5 Another structure diagram of the sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is provided, and the embodiment is further optimized on the basis of the foregoing embodiment.

[0073] As shown in the formula, Figure 5 The sulfur hexafluoride field recovery operation monitoring system provided by the embodiment of the utility model is further optimized and arranged with a UI 507 and a communication module 508 on the basis of the measurement base 501, the pressure sensor 502, the controller 503, the flowmeter 504, the gas comprehensive analyzer 505 and the split tee valve 506.

[0074] The UI 507 is connected to the controller 503 and is used to show the recovery operation data obtained by the controller 503 to the user and obtain the operation instruction input by the user.

[0075] The communication module 508 is used to send the recovery operation data obtained by the controller 503 to the power grid management background.

[0076] It can be understood that the user interface UI can be used as a window for the system to interact with the user, on the one hand, to realize the display of the analyzed and processed data and the recorded and summarized data, for example, the current recovery state data can be displayed in real time through the UI, including the recovery rate time change curve, the recovery amount time change curve and the recovery quality time change curve; on the other hand, the platform for the user to operate and input the instruction is also provided, for example, when it is found that the recovery rate is not up to standard or the gas quality is not up to standard, the recovery process is terminated in time through the UI.

[0077] In an embodiment, the controller 503 generates a recovery operation report after the recovery operation is completed and shows the report to the user through the UI 507.

[0078] Through the setting of the communication module, data remote transmission can be realized, so that the monitoring and analysis data is uploaded to the power grid management background in real time or periodically. The management personnel can remotely view the analysis results and data of the system through the management background to perform remote monitoring and analysis, so that problems can be found and handled in time with the help of the more complete software and hardware facilities of the management background, and storage and analysis of historical data can also be realized to generate reports and trend analysis, thereby providing a basis for subsequent equipment maintenance and operation optimization.

[0079] In an embodiment, the pressure sensor 502, the flow meter 504, the gas comprehensive analyzer 505, and the split three-way valve 506 realize data communication with the controller 503 through the communication module 508.

[0080] In an embodiment, a special alarm module can also be added, so that when an abnormal situation occurs during the recycling process (such as substandard recycling rate or substandard recycling quality), the alarm module triggers an alarm through sound, light, or text prompt.

[0081] In an embodiment, to ensure that each device or module in the system can work normally and stably, a special power management module can also be provided. The power management module can be used to provide power support in the absence of external power supply, and can also realize automatic switching between external power supply and battery power supply, thereby ensuring stable work of the device in the case of voltage fluctuation.

[0082] For example, for the SF6 field recycling operation monitoring system shown in Figure 5 The following application examples are given for the SF6 field recycling operation monitoring system shown in

[0083] In a large substation, a SF6 gas insulated circuit breaker needs to be maintained regularly. During the maintenance process, the SF6 gas in the circuit breaker needs to be recycled and stored for subsequent use or disposal. The recycling operation process is as follows:

[0084] 1) Field arrangement:

[0085] Install the SF6 field recycling operation monitoring system shown in Figure 5 The inlet end of the measuring base is connected to the recycling port of the circuit breaker through a sealing joint, and the outlet end of the measuring base is connected to the flow meter and the split three-way valve through sealing joints in sequence, one output of the split three-way valve is connected to the gas comprehensive analyzer, and the other output is connected to the recycling pipeline of the SF6 recycling device.

[0086] Start the monitoring system and check whether each working module of the system is working normally.

[0087] 2) Operation information input:

[0088] The job information is input through the user interface, including device number, operator name, and estimated recovery amount.

[0089] 3) Recovery process monitoring:

[0090] The monitoring system automatically starts collecting data, including pressure, flow rate, gas purity, and other key parameters.

[0091] The data is uploaded in real time to the management background of the power grid company through the communication module, and the management personnel can remotely monitor the recovery process.

[0092] If an abnormal situation occurs (such as recovery rate below the set value, gas purity unqualified), the monitoring system will immediately issue an alarm and notify the relevant personnel through the communication module.

[0093] 4) Job completion:

[0094] After the recovery is completed, the monitoring system generates a detailed recovery report, including dynamic recovery rate, dynamic recovery amount, dynamic recovery quality, and recovery time.

[0095] The report is displayed through the user interface and uploaded to the management background for subsequent audit and archiving.

[0096] The embodiments of the present application add UI and communication modules based on the foregoing embodiments, which not only realize real-time monitoring of sulfur hexafluoride recovery rate, recovery amount, and recovery quality during the sulfur hexafluoride recovery operation process, but also enhance the on-site interaction and remote management functions.

[0097] Note that the above is only a preferred embodiment of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments, and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A monitoring system for on-site sulfur hexafluoride (SF6) recovery operations, connected to both SF6 electrical equipment and SF6 recovery devices, characterized in that, include: The measuring base has an air inlet, an air outlet, and an inner cavity. The air inlet is connected to the recovery port of the sulfur hexafluoride electrical equipment and the inner cavity, and the air outlet is connected to the recovery pipe of the sulfur hexafluoride recovery device and the inner cavity. A pressure sensor, installed on the measuring base and connected to the inner cavity, is used to detect the pressure of sulfur hexafluoride gas in the inner cavity in real time to obtain recovery pressure data. The recovery pressure data includes the pressure value before recovery, the pressure value after recovery, and at least one pressure value during recovery. The controller, connected to the pressure sensor, is used to process the recovery pressure data to obtain the dynamic recovery rate of sulfur hexafluoride gas throughout the entire recovery process.

2. The on-site monitoring system for sulfur hexafluoride recovery operation according to claim 1, characterized in that, Also includes: A flow meter is installed between the outlet end of the measuring base and the recovery pipe of the sulfur hexafluoride recovery device, and is connected to the controller. It is used to detect the flow rate of sulfur hexafluoride gas flowing through the outlet end in real time to obtain recovery flow data. The recovery flow data includes at least one recovery flow value. Accordingly, the controller is also used to process the recovery flow data to obtain the dynamic recovery amount of sulfur hexafluoride gas during the entire recovery process.

3. The on-site monitoring system for sulfur hexafluoride recovery operation according to claim 1, characterized in that, Also includes: A gas comprehensive analyzer is installed on the sampling branch between the gas outlet of the measuring base and the recovery pipeline of the sulfur hexafluoride recovery device, and is connected to the controller. It is used to detect the quality of the sulfur hexafluoride gas flowing through the gas outlet in real time to obtain recovery quality data, which includes at least one recovery quality value. Accordingly, the controller is also used to process the recovery quality data to obtain the dynamic quality value of sulfur hexafluoride gas throughout the recovery process.

4. The on-site monitoring system for sulfur hexafluoride recovery operation according to claim 2, characterized in that, Also includes: A gas comprehensive analyzer is installed on the sampling branch between the flow meter and the recovery pipeline of the sulfur hexafluoride recovery device, and is connected to the controller. It is used to detect the quality of the sulfur hexafluoride gas flowing through the outlet in real time to obtain recovery quality data, which includes at least one recovery quality value. Accordingly, the controller is also used to process the recovery quality data to obtain the dynamic quality value of sulfur hexafluoride gas throughout the recovery process.

5. The on-site sulfur hexafluoride recovery operation monitoring system according to claim 2 or 4, characterized in that, The flow meter is a volumetric flow meter or a mass flow meter.

6. The on-site monitoring system for sulfur hexafluoride recovery operation according to claim 3 or 4, characterized in that, A diversion three-way valve is installed before the recovery pipeline of the sulfur hexafluoride recovery device, and the sampling branch is connected to one of the fluid outlets of the diversion three-way valve.

7. The on-site monitoring system for sulfur hexafluoride recovery operation according to claim 6, characterized in that, The diverting three-way valve is an electric three-way valve, and the diverting three-way valve is connected to the controller to adjust the valve opening according to the control of the controller.

8. The on-site monitoring system for sulfur hexafluoride recovery operation according to claim 1, characterized in that, Also includes: The user interface (UI), connected to the controller, is used to display the recycling operation data obtained by the controller to the user and to obtain the operation instructions input by the user.

9. The on-site monitoring system for sulfur hexafluoride recovery operation according to claim 1, characterized in that, Also includes: The communication module is used to send the recycling operation data obtained by the controller to the power grid management backend.

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