An intelligent environmentally friendly gas-insulated ring main unit

Abstract

The invention discloses an intelligent environmentally friendly gas insulated ring network cabinet, which specifically relates to the technical field of gas insulated ring network cabinets, including a cabinet body and an air box constituting the gas insulated ring network cabinet, wherein the air box is installed at the back of the cabinet body, and the front surface of the air box extends to the interior of the cabinet body, and the air inside the entire cabinet body can be extracted and monitored through a fan and a gas monitoring alarm, and then various parts of the air box that are prone to air leakage can be checked "one by one" for air leakage through a driving mechanism, a connecting component, an air guide hose, an air intake hose, a soft magnetic sticker and an air suction hole. When it is determined that a certain part of the air box has an air leakage, an LED light strip is electrically connected to a power adapter, so that the LED light strip outside the current part that is prone to air leakage is illuminated, and guidance of the air box leakage part is provided to the staff, so that the staff can quickly and accurately detect the air box leakage part after arriving at the scene as soon as possible, thereby improving the intelligence and efficiency of the gas insulated ring network cabinet maintenance.

Description

Technical Field

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

[0002] When producing gas-insulated ring main units, relevant monitoring equipment is required to detect the gas box of the gas-insulated ring main unit to check whether there is leakage. Only qualified gas-insulated ring main units can be put into use.

[0003] However, as the use time of gas-insulated ring main unit increases, it will leak after long-term use. Generally, a gas monitoring alarm will be installed in the room where the gas-insulated ring main unit is located. When the gas monitoring alarm detects the specific gas contained in the gas box, it will send an alarm to the staff. At this time, the staff must cut off the power supply of the current gas-insulated ring main unit, and then immediately detect the gas box leakage position, and conduct investigation and repair;

[0004] During the detection process, a handheld gas detector is needed to find the leaking gas-insulated ring main unit, and then the probe of the gas detector is moved close to the parts of the gas box that are prone to leaks one by one. Then soapy water is applied to the suspected leaks for monitoring. When bubbles appear in the soapy water, the leaking part is determined. In the process of checking one by one with the gas detector, it is necessary to manually hold the gas detector to check the leaking positions of each gas box in each insulating cabinet, which is extremely time-consuming and inefficient. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent environmentally friendly gas-insulated ring main unit to solve the above-mentioned deficiencies in the technology.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an intelligent environmentally friendly gas-insulated ring network cabinet, comprising a cabinet and a gas box constituting the gas-insulated ring network cabinet, wherein the gas box is installed on the back of the cabinet, and the front surface of the gas box extends to the interior of the cabinet, an air inlet is opened on the front surface of the cabinet, a main pipeline is fixed on one side of the cabinet above the gas box, a branch pipeline is connected to one side of the main pipeline, the end of the branch pipeline extends to the interior of the gas box, and an electromagnetic control valve is installed on the branch pipeline, a gas monitoring alarm is installed on the main pipeline, and a fan and a sealing cover are installed at both ends of the main pipeline respectively;

[0007] A fixing frame is fixed on the front surface of the air box, a connecting block is installed inside the fixing frame through a driving mechanism, an upper butt joint pipe is fixed inside the connecting block, and a connecting hose is connected between the top end of the upper butt joint pipe and the branch pipe;

[0008] The bottom of the fixing frame is located below the upper docking tube, and a fixing tube is fixed thereon. A lower docking tube that can move up and down is arranged inside the fixing tube. The lower docking tube passes through the fixing frame. The bottom of the lower docking tube is connected to an air guide hose through a connecting assembly. The bottom of the air guide hose is connected to an air intake hose. A soft magnetic patch is fixed to the back of the air intake hose by glue, and a plurality of air suction holes are opened on one side of the air intake hose.

[0009] Preferably, a magnetic ring is fixed to the outer side of the bottom of the upper butt joint tube, and an iron ring is fixed to the top of the lower butt joint tube.

[0010] Preferably, the magnetic ring and the iron ring are of the same size, and a ring-shaped groove for receiving the iron ring is provided on the surface wall of the fixing frame.

[0011] Preferably, the driving mechanism includes a forward and reverse motor, which is installed inside a fixed frame, a screw rod is installed on the transmission shaft of the forward and reverse motor, the end of the screw rod is rotatably connected to the fixed frame via a bearing, the screw rod is threadedly connected to a slider, a slide rail is installed on the surface wall of the fixed frame on the side close to the slider, the slider is slidably connected to the slide rail, and the connecting block is fixed to the outside of the slider.

[0012] Preferably, the connecting assembly includes an upper connecting ring, a lower connecting ring and a plurality of connecting rods, the upper connecting ring is located above the lower connecting ring, the plurality of connecting rods are connected between the upper connecting ring and the lower connecting ring, the upper connecting ring is threadedly connected to the bottom of the fixed tube, the internal thread of the lower connecting ring is connected to a connecting head, a corrugated tube is connected between the top of the connecting head and the bottom of the lower connecting tube, and the air guide hose is connected to the bottom of the connecting head.

[0013] Preferably, a power adapter and a battery are arranged inside the fixing frame on one side of the forward and reverse motors, and a limiting frame is fixed on both sides of the fixing tube at the bottom of the fixing frame, and conductive copper bars are fixed inside the two limiting frames, and the two conductive copper bars are respectively connected to the positive and negative poles of the output end of the power adapter through wires.

[0014] Preferably, an insulating pad is provided between the limiting frame and the conductive copper bar.

[0015] Preferably, connecting plates are fixed on both sides of the outside of the lower docking tube, one end of the connecting plate extends to the outside of the fixed tube, and the outer wall of the fixed tube is provided with a movable groove for the connecting plate to move up and down, an insulating sleeve is fixed to the inside of the connecting plate below the conductive copper bar, a conductive rod is fixed to the inside of the insulating sleeve, and the top of the conductive rod extends to the top of the insulating sleeve, and an LED light strip is fixed to the front surface of the air intake hose, and the positive and negative poles of the LED light strip are respectively connected to the two conductive rods through wires.

[0016] Preferably, a filter is installed inside the air inlet.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0018] 1. The air inside the entire cabinet can be extracted and monitored through the fan and gas monitoring alarm. Then, through the driving mechanism, connecting components, air guide hose, air intake hose, soft magnetic stickers and air suction holes, each part of the gas box that is prone to air leakage can be checked "one by one" for air leakage. When it is determined that a certain part of the gas box is leaking, the LED light strip is electrically connected to the power adapter, so that the LED light strip outside the current part that is prone to air leakage can light up, providing guidance for the staff to the leaking part of the gas box, so that the staff can quickly and accurately detect the leaking part of the gas box after arriving at the scene as soon as possible, thereby improving the intelligence and efficiency of gas insulated ring network cabinet maintenance;

[0019] 2. When multiple gas insulated ring main units are used in parallel, the fan is kept working. When the gas monitoring alarm sounds an alarm, all the solenoid control valves except the solenoid control valve on the first cabinet on the left remain open. At this time, when the gas monitoring alarm detects that there is no insulating gas leakage in the leftmost cabinet, the solenoid control valve on the second cabinet on the left is opened, and the solenoid control valve on the first cabinet on the left is closed at the same time, and so on, until the gas monitoring alarm sounds an alarm again; then the leakage parts of each cabinet are checked "one by one" to complete the operation from determining the cabinet to determining the approximate location of the leakage, which greatly improves the intelligence and convenience of the gas insulated ring main unit in the leakage detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the structure of a single gas insulated ring main unit of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the air box of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the fixing frame of the present invention;

[0024] Figure 4 A bottom view of the fixing frame of the present invention;

[0025] Figure 5 is a cross-sectional view of a fixed pipe of the present invention;

[0026] Figure 6 for Figure 5 A magnified view of part A in FIG.

[0027] Figure 7 A schematic diagram of the structure of the air intake hose of the present invention;

[0028] Figure 8 This is one of the structural schematic diagrams of a plurality of gas-insulated ring main units after being combined according to the present invention;

[0029] Fig. 9 This is the second structural schematic diagram of multiple gas insulated ring main units after being combined in the present invention.

[0030] Description of reference numerals:

[0031] 1. Cabinet; 2. Gas box; 3. Fan; 4. Gas monitoring alarm; 5. Main pipeline; 6. Branch pipeline; 7. Solenoid control valve; 8. Fixing bracket; 9. Forward and reverse motor; 10. Power adapter; 11. Battery; 12. Connecting hose; 13. Screw rod; 14. Slider; 15. Connecting block; 16. Upper butt pipe; 17. Fixing pipe; 18. Magnetic ring; 19. Iron ring; 20. Annular groove; 21. Connecting plate; 22. Bellows; 23. Connector; 24. Air guide hose; 25. Movable groove; 26. Upper connecting ring; 27. Lower connecting ring; 28. Connecting rod; 29. ​​Limiting frame; 30. Conductive copper strip; 31. Insulating pad; 32. Conductive rod; 33. Lower docking tube; 34. Air intake hose; 35. Soft magnetic sticker; 36. LED light strip; 37. Air intake hole; 38. Air intake hole; 39. Sealing cover; 40. Insulating sleeve. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Embodiment 1:

[0034] The present invention provides Figure 1-7 An intelligent environmentally friendly gas-insulated ring main unit shown in the figure comprises a cabinet 1 and an air box 2 constituting the gas-insulated ring main unit, the air box 2 being mounted on the back of the cabinet 1, and the front surface of the air box 2 extending to the interior of the cabinet 1, an air inlet 38 being provided on the front surface of the cabinet 1, a main pipeline 5 being fixed on one side of the cabinet 1 above the air box 2, a branch pipeline 6 being connected to one side of the main pipeline 5, the end of the branch pipeline 6 extending to the interior of the air box 2, an electromagnetic control valve 7 being mounted on the branch pipeline 6, a gas monitoring alarm 4 being mounted on the main pipeline 5, and a fan 3 and a sealing cover 39 being mounted on both ends of the main pipeline 5, respectively;

[0035] A fixing frame 8 is fixed on the front surface of the air box 2, a connecting block 15 is installed inside the fixing frame 8 through a driving mechanism, an upper butt joint pipe 16 is fixed inside the connecting block 15, and a connecting hose 12 is connected between the top end of the upper butt joint pipe 16 and the branch pipe 6;

[0036] The bottom of the fixing frame 8 is located below the upper docking tube 16 and is fixed with a fixing tube 17. A lower docking tube 33 that can move up and down is arranged inside the fixing tube 17. The lower docking tube 33 passes through the fixing frame 8. The bottom of the lower docking tube 33 is connected to the air guide hose 24 through a connecting assembly. The bottom of the air guide hose 24 is connected to the air intake hose 34. A soft magnetic sticker 35 is fixed to the back of the air intake hose 34 by glue. A plurality of air suction holes 37 are opened on one side of the air intake hose 34 (a controller is installed on the cabinet 1 in this case to control the working process of each component, including controlling the forward and reverse motors 9, the electromagnetic control valve 7, and the gas monitoring alarm 4).

[0037] Furthermore, a magnetic ring 18 is fixed to the outer side of the bottom of the upper docking tube 16, and an iron ring 19 is fixed to the top of the lower docking tube 33. The magnetic ring 18 and the iron ring 19 can make the upper docking tube 16 and the lower docking tube 33 fit tightly together to prevent external air from entering through the gap between the upper docking tube 16 and the lower docking tube 33.

[0038] Furthermore, the magnetic ring 18 and the iron ring 19 are of the same size, and an annular groove 20 for accommodating the iron ring 19 is provided on the surface wall of the fixing frame 8. When the magnetic ring 18 is separated from the iron ring 19, the iron ring 19 can fall into the annular groove 20 for accommodation. At the same time, the iron ring 19 cooperates with the annular groove 20 to limit the lower docking tube 33 to prevent the lower docking tube 33 from falling under the fixing frame 8.

[0039] Furthermore, the driving mechanism includes a forward and reverse motor 9, which is installed inside the fixed frame 8. A screw rod 13 is installed on the transmission shaft of the forward and reverse motor 9. The end of the screw rod 13 is rotatably connected to the fixed frame 8 through a bearing. The screw rod 13 is threadedly connected to a slider 14. A slide rail is installed on the surface wall of the fixed frame 8 on the side close to the slider 14. The slider 14 is slidably connected to the slide rail, and a connecting block 15 is fixed to the outside of the slider 14.

[0040] Furthermore, the connecting assembly includes an upper connecting ring 26, a lower connecting ring 27 and a plurality of connecting rods 28. The upper connecting ring 26 is located above the lower connecting ring 27. The plurality of connecting rods 28 are connected between the upper connecting ring 26 and the lower connecting ring 27. The upper connecting ring 26 is threadedly connected to the bottom of the fixed tube 17. The internal thread of the lower connecting ring 27 is connected to a connecting head 23. A bellows 22 is connected between the top of the connecting head 23 and the bottom of the lower docking tube 33. The air guide hose 24 is connected to the bottom of the connecting head 23.

[0041] Furthermore, a power adapter 10 and a battery 11 are provided inside the fixing frame 8 on one side of the forward and reverse motor 9, and a limit frame 29 is fixed on both sides of the fixing tube 17 at the bottom of the fixing frame 8, and a conductive copper bar 30 is fixed inside the two limit frames 29, and the two conductive copper bars 30 are respectively connected to the positive and negative poles of the output end of the power adapter 10 through wires.

[0042] Specifically, an insulating pad 31 is provided between the limiting frame 29 and the conductive copper bar 30 .

[0043] Specifically, connecting plates 21 are fixed on both sides of the outside of the lower docking tube 33, one end of the connecting plate 21 extends to the outside of the fixed tube 17, and the outer wall of the fixed tube 17 is provided with a movable groove 25 for the connecting plate 21 to move up and down, and an insulating sleeve 40 is fixed inside the connecting plate 21 below the conductive copper bar 30, and a conductive rod 32 is fixed inside the insulating sleeve 40, and the top of the conductive rod 32 extends to the top of the insulating sleeve 40, and an LED light strip 36 is fixed on the front surface of the air intake hose 34, and the positive and negative poles of the LED light strip 36 are respectively connected to the two conductive rods 32 through wires (the conductive method of the conductive rod 32 and the conductive copper bar 30 is the same as the conductive principle of the track light, which is the prior art).

[0044] Specifically, a filter is installed inside the air inlet 38, and the cleanliness inside the cabinet 1 can be further improved by the filter.

[0045] The working principle of this case is as follows:

[0046] During the operation of the gas insulated ring main unit, the fan 3 will "exhaust" the main pipeline 5, and the main pipeline 5 is connected with the branch pipeline 6, the connecting hose 12, and the upper butt joint 16. The cabinet 1 is connected with the external environment through the air inlet 38. Therefore, the fan 3 can extract the air inside the entire cabinet 1 (initially, the driving mechanism will move the slider 14 and the connecting block 15 as a whole to the leftmost side of the fixing frame 8, so the air inside the cabinet 1 will all enter the upper butt joint 16 through the gap between the upper butt joint 16 and the bracket of the fixing frame 8). The air extracted from the cabinet 1 will be monitored by the gas monitoring alarm 4 when it flows out through the main pipeline 5 (the gas monitoring alarm in this case The probe of 4 extends into the main pipeline 5, and the gas monitoring alarm 4 in this case can be understood as an SF6 gas alarm. Most of the existing gas-insulated ring network cabinets use SF6 gas for insulation. The insulating gas part is described below with SF6 gas). When the SF6 gas component inside the gas box 2 exceeds the sulfur hexafluoride concentration alarm value, the gas monitoring alarm 4 will alarm, which is convenient for the staff to grasp the information in time for subsequent remediation (generally, the sulfur hexafluoride concentration alarm value of the ring network cabinet is set as follows: low alarm value: usually set to 250ppm, high alarm value: often set to 500ppm);

[0047] When the gas monitoring alarm 4 completes the alarm, the staff can cut off the power of the current gas-insulated ring main unit to ensure the safety of subsequent maintenance. After the gas-insulated ring main unit is cut off, the battery 11 will supply power to the electrical components in this case (the battery 11 in this case can be understood as a backup power supply, and the charging process of the backup power supply access device is a prior art and will not be repeated here);

[0048] After that, the driving mechanism starts to work, and the forward and reverse motor 9 drives the screw rod 13 to rotate, so that the slider 14 and the connecting block 15 start to move to the right as a whole (the length of the moving distance of the slider 14 can be controlled by controlling the number of rotations of the screw rod 13). When the upper butt joint 16 moves to the top of the lower butt joint 33, the slider 14 stops moving, and then the magnetic ring 18 at the bottom of the upper butt joint 16 will attract the iron ring 19 at the top of the lower butt joint 33 upward, thereby tightly fitting the upper butt joint 16 and the lower butt joint 33. At this time, the main pipe 5, the branch pipe 6, the connecting hose 12, and the upper butt joint 16 , the lower butt joint 33, the bellows 22, the air guide hose 24 and the air intake hose 34 are in a connected state, and the only "air intake inlet" is the air intake hole 37 on the air intake hose 34, therefore, the air intake hole 37 will inhale the air around the air intake hose 34, and since the back of the air intake hose 34 is provided with a soft magnetic patch 35, the air intake hose 34 can be magnetically attracted to the part of the air box 2 that is prone to air leakage. When air leakage occurs in this part, the SF6 gas concentration monitored by this "channel" is the highest. Since multiple channels can be installed, it is only necessary to adjust the position of the upper butt joint 16 through the driving mechanism to obtain the SF6 gas concentration information of each part of the air box 2 that is prone to air leakage (the parts of the air box 2 that are prone to air leakage, such as the pipe connection between the pressure gauge used to monitor the internal pressure of the air box 2 and the air box 2, the air charging interface of the air box 2, the valve stem inside the air box 2 for controlling the switch, the position where the valve stem passes through the air box 2, and other positions, which are not given examples one by one here);

[0049] When it is determined that the concentration of SF6 gas in a certain "channel" is the highest, the position of the slider 14 will no longer move. Due to the magnetic attraction between the magnetic ring 18 and the iron ring 19 in the "channel" at this time, the lower docking tube 33 moves upward. Therefore, when the lower docking tube 33 moves to the highest end, the connecting plate 21 will also move to the highest end of the movable groove 25. At this time, the two conductive rods 32 will respectively contact the two conductive copper bars 30, so that the LED light strip is electrically connected to the power adapter 10, and then the LED light strip 36 on the current "channel" will light up, providing guidance for the staff on the leaking part of the gas box 2, so that the staff can quickly and accurately detect the leaking part of the gas box after arriving at the scene as soon as possible, thereby improving the intelligence and efficiency of the maintenance of the gas insulated ring network cabinet.

[0050] Embodiment 2:

[0051] When multiple gas insulated ring main units are used in parallel (see Appendix Figure 8 And the instruction manual Fig. 9 ), at this time, several main pipelines 5 can be connected through flanges, and the fan 3 can be kept working during the operation of the gas insulated ring network cabinet. When the gas monitoring alarm 4 sounds an alarm, all the electromagnetic control valves 7 except the electromagnetic control valve 7 on the first cabinet 1 on the left remain in an open state. At this time, when the gas monitoring alarm 4 detects that there is no SF6 gas leakage in the cabinet 1 on the far left, the electromagnetic control valve 7 on the second cabinet 1 on the left is opened, and the electromagnetic control valve 7 on the first cabinet 1 on the left is closed at the same time, and so on, until the gas monitoring alarm 4 sounds an alarm again;

[0052] Afterwards, the detection steps of the single cabinet 1 in the first embodiment are performed again to complete the operation from determining the cabinet 1 to determining the approximate location of the gas leakage, which greatly improves the intelligence and convenience of the gas insulated ring main unit in the leakage detection process.

[0053] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An intelligent environmentally friendly gas-insulated ring main unit, comprising a cabinet (1) and a gas box (2) constituting the gas-insulated ring main unit, wherein the gas box (2) is mounted on the back of the cabinet (1), and the front surface of the gas box (2) extends to the interior of the cabinet (1), characterized in that: An air inlet hole (38) is provided on the front surface of the cabinet (1); a main pipeline (5) is fixed on one side of the cabinet (1) above the gas box (2); a branch pipeline (6) is connected to one side of the main pipeline (5); the end of the branch pipeline (6) extends to the interior of the gas box (2); an electromagnetic control valve (7) is installed on the branch pipeline (6); a gas monitoring alarm (4) is installed on the main pipeline (5); and a fan (3) and a sealing cover (39) are installed at both ends of the main pipeline (5); A fixing frame (8) is fixed on the front surface of the air box (2); a connecting block (15) is installed inside the fixing frame (8) through a driving mechanism; an upper butt joint pipe (16) is fixed inside the connecting block (15); a connecting hose (12) is connected between the top end of the upper butt joint pipe (16) and the branch pipe (6); The bottom of the fixing frame (8) is located below the upper butt joint pipe (16) and is fixed with a plurality of fixing pipes (17). A lower butt joint pipe (33) that can move up and down is arranged inside each of the fixing pipes (17). The lower butt joint pipe (33) passes through the fixing frame (8). The bottom of the lower butt joint pipe (33) is connected to an air guide hose (24) through a connecting assembly. The bottom of the air guide hose (24) is connected to an air intake hose (34). A soft magnetic patch (35) is fixed to the back of the air intake hose (34) by gluing. A plurality of air suction holes (37) are provided on one side of the air intake hose (34).

2. The intelligent environmentally friendly gas insulated ring main unit according to claim 1, characterized in that: A magnetic ring (18) is fixed to the outer side of the bottom of the upper butt joint pipe (16), and an iron ring (19) is fixed to the top of the lower butt joint pipe (33).

3. The intelligent environmentally friendly gas insulated ring main unit according to claim 2, characterized in that: The magnetic ring (18) and the iron ring (19) are of the same size, and a ring groove (20) for receiving the iron ring (19) is provided on the surface wall of the fixing frame (8).

4. The intelligent environmentally friendly gas insulated ring main unit according to claim 3 is characterized by: The driving mechanism comprises a forward and reverse motor (9), the forward and reverse motor (9) is installed inside a fixed frame (8), a screw rod (13) is installed on the transmission shaft of the forward and reverse motor (9), the end of the screw rod (13) is rotatably connected to the fixed frame (8) through a bearing, the screw rod (13) is threadedly connected to a slider (14), a surface wall of the fixed frame (8) is installed with a slide rail on a side close to the slider (14), the slider (14) is slidably connected to the slide rail, and the connecting block (15) is fixed to the outside of the slider (14).

5. The intelligent environmentally friendly gas insulated ring main unit according to claim 4, characterized in that: The connection assembly comprises an upper connection ring (26), a lower connection ring (27) and a plurality of connection rods (28); the upper connection ring (26) is located above the lower connection ring (27); the plurality of connection rods (28) are connected between the upper connection ring (26) and the lower connection ring (27); the upper connection ring (26) is threadedly connected to the bottom of the fixed tube (17); the inner thread of the lower connection ring (27) is connected to a connection head (23); a bellows (22) is connected between the top of the connection head (23) and the bottom of the lower docking tube (33); and the air guide hose (24) is connected to the bottom of the connection head (23).

6. The intelligent environmentally friendly gas insulated ring main unit according to claim 5, characterized in that: A power adapter (10) and a battery (11) are arranged inside the fixing frame (8) on one side of the forward and reverse motor (9); a limit frame (29) is fixed on both sides of the fixing tube (17) at the bottom of the fixing frame (8); conductive copper bars (30) are fixed inside the two limit frames (29); and the two conductive copper bars (30) are respectively connected to the positive and negative electrodes of the output end of the power adapter (10) through wires.

7. The intelligent environmentally friendly gas insulated ring main unit according to claim 6, characterized in that: An insulating pad (31) is provided between the limiting frame (29) and the conductive copper strip (30).

8. The intelligent environmentally friendly gas insulated ring main unit according to claim 6, characterized in that: Connecting plates (21) are fixed on both sides of the outside of the lower butt-jointing tube (33), one end of the connecting plate (21) extends to the outside of the fixed tube (17), and the outer wall of the fixed tube (17) is provided with a movable groove (25) for the connecting plate (21) to move up and down. An insulating sleeve (40) is fixed inside the connecting plate (21) below the conductive copper strip (30), and a conductive rod (32) is fixed inside the insulating sleeve (40), and the top end of the conductive rod (32) extends to the top of the insulating sleeve (40). An LED light strip (36) is fixed on the front surface of the air intake hose (34), and the positive and negative electrodes of the LED light strip (36) are respectively connected to the two conductive rods (32) through wires.

9. The intelligent environmentally friendly gas insulated ring main unit according to claim 1, characterized in that: A filter screen is installed inside the air inlet (38).

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