Intelligent environment-friendly gas insulation ring main unit

Abstract

The invention relates to the technical field of gas insulation ring main units, discloses an intelligent environment-friendly gas insulation ring main unit, and solves the problem that when a gas leakage part of an environment-friendly gas tank is positioned, environment-friendly gas cannot be smoothly and sensitively captured by a gas monitor, so that the positioning difficulty of the gas leakage part of the gas tank is relatively high. Air flow generated during air leakage in the sealing cover drives the fan blades to deflect, the position of a connecting piece where air leakage occurs in the air box is determined according to the position of the driven measuring assembly, the specific direction of the air leakage position on one side of the connecting piece is determined, later maintenance is facilitated, detection is not affected by physical or chemical properties of environment-friendly gas stored in the air box, and the detection accuracy is improved. The detection effect is reliable, tracer gas is further introduced into the rubber cover, when gas leakage at the assembly position of the connecting piece is slow, the tracer gas flows into the gas detection pipe and is detected by the gas detector, the gas leakage condition can be detected, and the safety and reliability of gas leakage detection of the gas tank are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-insulated ring main units, and specifically to an intelligent environmentally friendly gas-insulated ring main unit. Background Art

[0002] An environmentally friendly gas-insulated ring main unit is a new type of power switchgear that uses environmentally friendly gases (such as dry air or nitrogen) as the insulating medium, aiming to replace the traditional SF6 gas-insulated ring main unit.

[0003] The existing patent number CN119401259A discloses "an intelligent environmentally friendly gas-insulated ring main unit", which includes being able to extract and monitor the air inside the entire cabinet body through a fan and a gas monitoring and alarm device, and then through a driving mechanism, a connecting component, a gas guiding hose, an air inlet hose, a soft magnetic sticker, and an air suction hole, it can "one by one" check whether there is air leakage at each air leakage-prone part of the gas tank to determine whether there is air leakage at a certain part of the gas tank; to solve the problem that it is difficult for manual positioning of the air leakage part when there is air leakage in the gas tank.

[0004] However, considering that existing gas tanks mostly use gases that do not affect the atmospheric environment, such as dry air or nitrogen, as the protective gas, during the detection implemented by the above patent, when gas leaks at the assembly holes of the gas tank (for assembling inflation valves, pressure relief valves, terminal blocks, etc.), it cannot be well detected by the corresponding gas monitoring structure (because after dry air or nitrogen leaks into the atmospheric environment, it blends into the atmospheric environment and is difficult to detect again). Therefore, when positioning the air leakage part of the gas tank filled with environmentally friendly gas, it is difficult to smoothly detect the air leakage part of the gas tank because the environmentally friendly gas is not easily captured sensitively by the gas monitoring. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent environmentally friendly gas-insulated ring main unit, which solves the problem that it is difficult to position the air leakage part of the gas tank filled with environmentally friendly gas because the environmentally friendly gas is not easily captured sensitively by the gas monitoring.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An intelligent environmentally friendly gas-insulated ring main unit, including a gas tank for power switches, a plurality of assembly holes are opened on the surface of the tank board of the gas tank, and the plurality of assembly holes are used for assembling corresponding connecting parts, and a detection mechanism for air leakage detection and position positioning is provided on the surface of the connecting parts.

[0007] The detection mechanism includes a sealing cover sleeved on the surface of the connecting piece. One side of the sealing cover is provided with a rubber cover that is hermetically connected to the surface of the connecting piece. The inner side of the sealing cover and the connecting piece form a sealed space. The inner side of the sealing cover is provided with a measuring assembly that rotates with the airflow. A plurality of the measuring assemblies are arranged along the circumferential direction of the connecting piece. The measuring assembly includes a fan blade pushed by the airflow, a carbon fiber rod driven to rotate by the fan blade, and a trigger piece for detecting the rotation action of the carbon fiber rod.

[0008] When air leakage occurs at the installation position of the connecting piece on the surface of the box board, the leakage airflow is used to push the adjacent fan blade, so that the rotation of the carbon fiber rod is detected by the trigger piece.

[0009] As a further description of the above technical solution: A plurality of fittings for tightly attaching it to the surface of the box board are arranged around the circumference of the sealing cover. The fittings include a fixed seat fixedly assembled on the outer side of the sealing cover and a spring plate frame fixedly assembled on the outer surface of the box board. The fixed seat and the spring plate frame are fixedly connected by bolts.

[0010] As a further description of the above technical solution: A sealing gasket is provided on one side of the sealing cover close to the box board, and a bayonet for connecting with the rubber cover is provided on the other side. The rubber cover is hermetically connected to the bayonet through a clamp, and the other side of the rubber cover is hermetically connected to the surface of the connecting piece through another clamp.

[0011] As a further description of the above technical solution: A monitoring cavity for assembling the trigger piece is provided on the inner side of the sealing cover. A circuit board electrically connected to a plurality of trigger pieces is assembled in the monitoring cavity. The carbon fiber rod is rotationally assembled in the sealed space between the monitoring cavity and the inner side of the sealing cover through a bearing on the inner wall of the monitoring cavity.

[0012] As a further description of the above technical solution: The trigger piece includes an annular cover fixedly assembled on one side of the bearing. Two symmetric conductive rings are provided on the inner side of the annular cover. The conductive rings are electrically connected to the circuit board through wires. An insulating part is provided between the two conductive rings. The trigger piece further includes a conductive brush fixed on one side of the carbon fiber rod. The conductive brush makes sliding conductive contact with the two conductive rings.

[0013] As a further description of the above technical solution: A directional block is fixedly arranged on the surface of the carbon fiber rod inside the monitoring cavity. An iron block is fixedly arranged on one side of the directional block, and a counterweight block for balancing the iron block, the insulating part, and the weight of the fan blade is arranged on the other side, so that the carbon fiber rod maintains static balance during axial rotation.

[0014] As a further description of the above technical solution: A magnetic attraction plate magnetically attracted to the iron block is assembled on the inner side of the monitoring cavity. A metal column is provided on one side of the magnetic attraction plate, and a coil is spirally wound on the surface of the metal column.

[0015] As a further description of the above technical solution: The fan blade is arranged on one side of the carbon fiber rod.

[0016] As a further description of the above technical solution: A ventilation pipe is connected to the side of the rubber cover through a pressure valve. One end of the ventilation pipe is connected in parallel to the gas detection pipe above the box plate. A tracer gas is introduced into the inner side of the rubber cover during assembly, and a gas detector for detecting the tracer gas is assembled on the gas detection pipe.

[0017] As a further description of the above technical solution: A pressurizing assembly is provided on the upper side of the box plate, which cooperates with the gas detector assembled on the gas detection pipe to introduce pressurized gas into the gas tank. The pressurizing assembly includes a gas storage tank storing high-pressure gas, and the gas storage tank is connected to the inner side of the gas tank through a pressure relief valve.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: The airflow generated when the sealing cover leaks drives the fan blade to deflect. According to the position of the driven measurement assembly, the position of the connecting part where the gas tank leaks is determined, and the specific orientation of the leakage position on one side of the connecting part is determined, which is convenient for later maintenance. Moreover, this detection is not affected by the physical or chemical properties of the environmental protection gas stored in the gas tank, and the detection effect is reliable; at the same time, the fan blade is arranged on one side of the carbon fiber rod, and its plane is adjusted to be perpendicular to the airflow direction through the magnetic attraction plate, making it easier to rotate, further improving the sensitivity of the carbon fiber rod and the fan blade to detect the airflow, and enhancing the sensitivity of detecting the gas tank leakage; further, a tracer gas is introduced into the rubber cover. When the leakage at the assembly position of the connecting part is slow, the tracer gas flows into the gas detection pipe and is detected by the gas detector, and the leakage situation can also be detected, further improving the safety and reliability of detecting the gas tank leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the gas tank structure of the present invention;

[0021] Figure 3 is a schematic diagram of the installation position of the detection mechanism of the present invention;

[0022] Figure 4 is a schematic diagram of the disassembled structure of the detection mechanism of the present invention;

[0023] Figure 5 For the present invention Figure 4 is an enlarged schematic diagram of A;

[0024] Figure 6 is a schematic diagram of the structure of the measurement assembly of the present invention;

[0025] Figure 7Schematic diagram of the trigger structure of the present invention;

[0026] Figure 8 Schematic diagram of the magnetic attraction plate structure of the present invention;

[0027] Figure 9 Schematic diagram of the pressurizing assembly structure of the present invention.

[0028] In the figure: 10, gas tank; 11, tank plate; 12, connecting piece; 20, detection mechanism; 21, sealing cover; 211, monitoring chamber; 212, sealing gasket; 213, bayonet; 22, fitting; 221, fixed seat; 222, shrapnel holder; 23, rubber cover; 231, clamp; 24, ventilation pipe; 25, measuring assembly; 251, carbon fiber rod; 252, bearing; 253, trigger; 2531, annular cover; 2532, conductive brush; 2533, conductive ring; 2534, wire; 2535, insulating part; 254, orientation block; 2541, iron block; 2542, counterweight block; 255, fan blade; 26, circuit board; 27, magnetic attraction plate; 271, metal column; 272, coil; 30, pressurizing assembly; 31, gas storage tank; 32, air release valve; 40, gas measuring pipe. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0031] Combined with Figures 1-9 , an intelligent environmentally friendly gas-insulated ring main unit includes a gas tank 10 for a power switch. A plurality of assembly holes are provided on the surface of the tank plate 11 of the gas tank 10. The plurality of assembly holes are used to assemble corresponding connecting pieces 12. The connecting pieces 12 include an inflation valve, a pressure relief valve, a wiring terminal, etc., which are structures for establishing an electrical connection between the gas tank 10 and the ring main unit. A detection mechanism 20 for leak detection and position positioning is provided on the surface of the connecting piece 12;

[0032] The detection mechanism 20 includes a sealing cover 21 sleeved on the surface of the connecting piece 12. One side of the sealing cover 21 is provided with a rubber cover 23 that is hermetically connected to the surface of the connecting piece 12. A sealed space is formed between the inner side of the sealing cover 21 and the connecting piece 12. Inside the sealing cover 21, there is a measuring assembly 25 that rotates with the airflow. A plurality of measuring assemblies 25 are arranged along the circumferential direction of the connecting piece 12. The measuring assembly 25 includes a fan blade 255 pushed by the airflow, a carbon fiber rod 251 driven to rotate by the fan blade 255, and a trigger 253 for detecting the rotation action of the carbon fiber rod 251.

[0033] When air leaks at the installation position of the connecting piece 12 on the surface of the box board 11, the leaking air flow is used to push the adjacent fan blade 255, causing the carbon fiber rod 251 to rotate and be detected by the trigger 253. While determining that the air tank 10 leaks, the specific side of the leaking position relative to the connecting piece 12 is accurately positioned.

[0034] Specifically, the sealing cover 21 covers the outside of the connecting piece 12, forming a sealed space with the connecting piece 12. The measuring assembly 25 is assembled in the sealed space to prevent the air flow outside the sealing cover 21 from affecting the sensitivity of the measuring assembly 25. The rotational resistance of the carbon fiber rod 251 is small. When air leaks at the assembly position of the connecting piece 12, an air flow will be generated in the corresponding sealed space, driving the fan blade 255 to deflect, further driving the corresponding carbon fiber rod 251 to rotate, and being detected by the corresponding trigger 253. According to the position of the driven measuring assembly 25, the position of the connecting piece 12 where the air tank 10 leaks is determined, and the specific orientation of the leaking position on one side of the connecting piece 12 is determined, providing great convenience for later manual maintenance. Moreover, the leaking position is automatically located by the leaking air flow, without being affected by the physical or chemical properties of the environmental protection gas stored in the air tank 10, making the air leakage detection of the air tank 10 and the positioning of the leaking part more reliable, and ensuring the use safety of the environmental protection gas insulated ring main unit.

[0035] Combined Figures 2-4 With, a plurality of fitting parts 22 for tightly attaching the sealing cover 21 to the surface of the box board 11 are arranged around the circumference of the sealing cover 21. The fitting parts 22 include a fixed seat 221 fixedly assembled on the outside of the sealing cover 21 and a spring piece holder 222 fixedly assembled on the outer surface of the box board 11. The fixed seat 221 and the spring piece holder 222 are fixedly connected by bolts.

[0036] On one side of the sealing cover 21 close to the box board 11, there is a sealing gasket 212. The sealing cover 21 is elastically pushed by the fixing seat 221, so that the sealing gasket 212 is tightly attached to the surface of the box board 11 for the side of the sealing cover 21 to be in sealed contact with the surface of the box board 11. On the other side, there is a bayonet 213 connected to the rubber cover 23. The rubber cover 23 is hermetically connected to the bayonet 213 through a clamp 231. The other side of the rubber cover 23 is hermetically connected to the surface of the connecting member 12 through another clamp 231. Due to the easily deformable characteristic of the rubber cover 23, when dealing with various connecting members 12, the rubber cover 23 can be appropriately adjusted to be hermetically connected to the surface of the corresponding connecting member 12, so as to meet the condition of forming a sealed space inside the sealing cover 21.

[0037] Combined Figures 4-7 , inside the sealing cover 21, there is a monitoring cavity 211 for assembling the trigger member 253. Inside the monitoring cavity 211, there is a circuit board 26 electrically connected to a plurality of trigger members 253. The carbon fiber rod 251 is rotationally assembled inside the monitoring cavity 211 and the sealed space inside the sealing cover 21 through a bearing 252 on the inner wall of the monitoring cavity 211. The monitoring cavity 211 assembles the trigger member 253 for detecting the rotation of the carbon fiber rod 251 and the circuit board 26 inside, and the internal space is sealed to prevent the trigger member 253 from contacting the air and oxidizing during later maintenance, further extending the service life of the trigger member 253 and the circuit board 26.

[0038] The trigger member 253 includes an annular cover 2531 fixedly assembled on one side of the bearing 252. Inside the annular cover 2531, there are two symmetrically arranged conductive rings 2533. The conductive rings 2533 are electrically connected to the circuit board 26 through wires 2534. There is an insulating part 2535 between the two conductive rings 2533. The trigger member 253 also includes a conductive brush 2532 fixed on one side of the carbon fiber rod 251. The conductive brush 2532 makes sliding contact with the two conductive rings 2533 to achieve conduction.

[0039] Under normal conditions, the conductive brush 2532 is located on one side of the insulating part 2535, and the two conductive rings 2533 are in an open circuit state. When air leakage occurs at the installation part of the connecting member 12, causing a flowing air current in the sealed space inside the sealing cover 21, and the carbon fiber rod 251 is driven to rotate by the fan blade 255, the conductive brush 2532 connected to one side of the carbon fiber rod 251 will slide along the inner wall of the annular cover 2531. When making conductive contact with the two conductive rings 2533, the two conductive rings 2533 are in a conducting state. When the circuit board 26 receives the circuit conducting signal of the trigger member 253, it can obtain that the carbon fiber rod 251 has rotated. There is a signal processor on the circuit board 26, which can convert the signal of the connected circuit of the corresponding trigger member 253 into a signal corresponding to the position of the measurement component 25, so as to further determine the problem of air leakage at the corresponding side position of the connecting member 12 and ensure the safe use of the environmentally friendly gas-insulated ring main unit.

[0040] Combined with Figures 6-7 , on the inner side of the monitoring cavity 211 of the carbon fiber rod 251, a directional block 254 is fixedly arranged. On one side of the directional block 254, an iron block 2541 is fixedly arranged, and on the other side, a counterweight block 2542 for balancing the weights of the iron block 2541, the insulating part 2535, and the fan blade 255 is provided, so that the carbon fiber rod 251 rotates along the axis to maintain static balance;

[0041] A magnetic attraction plate 27 magnetically attracted to the iron block 2541 is assembled inside the monitoring cavity 211. On one side of the magnetic attraction plate 27, a metal column 271 is provided, and a coil 272 is spirally wound around the surface of the metal column 271.

[0042] Specifically, considering that when the force-receiving surface of the fan blade 255 is perpendicular to the air flow direction, the carbon fiber rod 251 is more likely to be pushed by the air flow and rotate. Therefore, after the sealing cover 21 is assembled outside the connecting member 12, the plane of the fan blade 255 should also be adjusted to be perpendicular to the air flow direction. In this embodiment, by first controlling the current passing through the coil 272 to make the metal column 271 magnetic, attracting the iron block 2541 by magnetic force, further controlling the synchronous rotation of multiple carbon fiber rods 251, so that the corresponding multiple fan blades 255 are synchronously adjusted to the preset position. Subsequently, after the air flow in the sealed space inside the sealing cover 21 is stabilized, the current in the coil 272 is cut off, so that the carbon fiber rod 251 is in a freely rotating state, so that the fan blade 255 can be used to detect the air leakage of the air box 10.

[0043] Combined with Figure 6 , the fan blade 255 is arranged on one side of the carbon fiber rod 251, so that when the air flow pushes the fan blade 255, the thrust is easily applied to one side of the carbon fiber rod 251, so that the carbon fiber rod 251 is more likely to rotate, further improving the sensitivity of the carbon fiber rod 251 to detect the air flow in cooperation with the fan blade 255, thereby improving the sensitivity of detecting the air leakage of the air box 10 and further ensuring the use safety of the environmentally friendly gas insulated ring main unit.

[0044] Combined with Figures 2-4 , the side of the rubber cover 23 is connected with a ventilation pipe 24 through a pressure valve. One end of the ventilation pipe 24 is connected in parallel to the gas detection pipe 40 above the box plate 11. When the rubber cover 23 is assembled, a tracer gas such as helium, which is commonly used as a tracer gas, is introduced into the inside. A gas detector for detecting the tracer gas is assembled on the gas detection pipe 40, not shown in the figure. The pressure valve connected to one end of the ventilation pipe 24 is automatically connected to the ventilation pipe 24 when the pressure in the cavity of the rubber cover 23 increases;

[0045] Specifically, when the air leakage at the assembly position of the connecting member 12 is extremely slow, making the generated airflow difficult to push the fan blade 255 to cause the carbon fiber rod 251 to rotate, as the pressure in the cavity of the sealing cover 21 increases due to air leakage, the pressure valve opens the valve to communicate with the ventilation pipe 24. Subsequently, the tracer gas in the reservoir of the rubber cover 23 flows into the gas measuring pipe 40 through the ventilation pipe 24 and is detected by the gas detector. Subsequently, the gas detector issues an alarm, indicating that there is an air leakage problem in the alarm gas box 10, further ensuring the safe use of the environmentally friendly gas-insulated ring main unit.

[0046] Combined with Figure 2 , Figure 9 , on the upper side of the box board 11, there is a pressurizing assembly 30 that cooperates with the gas detector assembled on the gas measuring pipe 40 to introduce pressurized gas into the gas box 10. The pressurizing assembly 30 includes a gas storage tank 31 storing high-pressure gas, and the gas storage tank 31 is connected to the inner side of the gas box 10 through a pressure relief valve 32.

[0047] Specifically, when the gas detector assembled on the gas measuring pipe 40 detects an air leakage problem in the gas box 10, it has not yet detected which connecting member 12 has an air leakage and the specific location of the air leakage of the connecting member 12. In this embodiment, when the gas detector issues an alarm, simultaneously, the pressure relief valve 32 is opened to prompt the high-pressure gas in the gas storage tank 31 to be injected into the gas box 10 to increase the gas pressure in the gas box 10, so as to accelerate the air leakage speed of the connecting member 12 with an air leakage problem and accelerate the gas flow rate, so as to smoothly push the fan blade 255 and enable the measurement assembly 25 to successfully detect the connecting member 12 with an air leakage and the specific part with an air leakage.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An intelligent environmentally friendly gas-insulated ring main unit, comprising a gas tank (10) for a power switch, wherein a plurality of connectors (12) are provided on the surface of the tank plate (11) of the gas tank (10), and it is characterized in that: The surface of the connecting piece (12) is provided with a detection mechanism (20) for air leakage detection and position positioning; The detection mechanism (20) includes a sealing cover (21) sleeved on the surface of the connecting piece (12). One side of the sealing cover (21) is provided with a rubber cover (23) hermetically connected to the surface of the connecting piece (12). A sealed space is formed between the inner side of the sealing cover (21) and the connecting piece (12). The inner side of the sealing cover (21) is provided with a measuring assembly (25) that rotates with the airflow. A plurality of the measuring assemblies (25) are arranged along the circumferential direction of the connecting piece (12). The measuring assembly (25) includes a fan blade (255) pushed by the airflow, a carbon fiber rod (251) driven to rotate by the fan blade (255), and a trigger (253) for detecting the rotation action of the carbon fiber rod (251); When air leakage occurs at the installation position of the connecting piece (12) on the surface of the box board (11), the leakage airflow is used to push the adjacent fan blade (255), so that the rotation of the carbon fiber rod (251) is detected by the trigger (253).

2. The intelligent environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that: A plurality of fittings (22) for tightly attaching it to the surface of the box board (11) are arranged around the circumference of the sealing cover (21). The fittings (22) include a fixed seat (221) fixedly assembled on the outer side of the sealing cover (21), and a spring piece holder (222) fixedly assembled on the outer surface of the box board (11). The fixed seat (221) and the spring piece holder (222) are fixedly connected by bolts.

3. The intelligent environmentally friendly gas-insulated ring main unit according to claim 2, characterized in that: One side of the sealing cover (21) close to the box board (11) is provided with a sealing gasket (212), and the other side is provided with a bayonet (213) connected to the rubber cover (23). The rubber cover (23) is hermetically connected to the bayonet (213) through a clamp (231). The other side of the rubber cover (23) is hermetically connected to the surface of the connecting piece (12) through another clamp (231).

4. An intelligent environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that: The inner side of the sealing cover (21) is provided with a monitoring cavity (211) for assembling the trigger (253). A circuit board (26) electrically connected to a plurality of triggers (253) is assembled in the monitoring cavity (211). The carbon fiber rod (251) is rotationally assembled in the sealed space between the monitoring cavity (211) and the inner side of the sealing cover (21) through a bearing (252) on the inner wall of the monitoring cavity (211).

5. An intelligent environmentally friendly gas-insulated ring main unit according to claim 4, characterized in that: The trigger (253) includes an annular cover (2531) fixedly assembled on one side of the bearing (252). Two symmetric conductive rings (2533) are arranged inside the annular cover (2531). The conductive rings (2533) are electrically connected to the circuit board (26) through wires (2534). An insulating part (2535) is arranged between the two conductive rings (2533). The trigger (253) further includes a conductive brush (2532) fixed on one side of the carbon fiber rod (251). The conductive brush (2532) makes sliding conductive contact with the two conductive rings (2533).

6. The intelligent environmentally friendly gas-insulated ring main unit according to claim 5, characterized in that: On the surface of the carbon fiber rod (251) and inside the monitoring cavity (211), a directional block (254) is fixedly arranged. On one side of the directional block (254), an iron block (2541) is fixedly arranged, and on the other side, there are a balancing iron block (2541), an insulating part (2535), and a counterweight block (2542) for the weight of the fan blade (255), so that the carbon fiber rod (251) maintains static balance during rotation along the axis.

7. An intelligent environmentally friendly gas-insulated ring main unit according to claim 6, characterized in that: Inside the monitoring cavity (211), a magnetic attraction plate (27) magnetically attracted to the iron block (2541) is assembled. On one side of the magnetic attraction plate (27), a metal column (271) is provided, and a coil (272) is spirally wound around the surface of the metal column (271).

8. An intelligent environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that: The fan blade (255) is arranged on one side of the carbon fiber rod (251).

9. An intelligent environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that: On the side of the rubber cover (23), an air vent pipe (24) is connected through a pressure valve. One end of the air vent pipe (24) is connected in parallel to a gas detection pipe (40) above the box board (11). When the rubber cover (23) is assembled, a tracer gas is introduced into the inside, and a gas detector for detecting the tracer gas is assembled on the gas detection pipe (40).

10. An intelligent environmentally friendly gas-insulated ring main unit according to claim 9, characterized in that: Above the box board (11), a pressurizing component (30) is provided, which cooperates with the gas detector assembled on the gas detection pipe (40) to introduce pressurized gas into the gas box (10). The pressurizing component (30) includes a gas storage tank (31) storing high-pressure gas, and the gas storage tank (31) is communicated with the inside of the gas box (10) through a pressure relief valve (32).

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