Air-insulated high-voltage vacuum ring main unit

Abstract

The invention relates to the technical field of vacuum ring main units, and provides an air-insulated high-voltage vacuum ring main unit which comprises a ring main unit body, the inner wall of the ring main unit body is fixedly connected with an air pressure sensor and a positioning seat, and the inner side of the positioning seat is rotatably connected with an air collecting pipe; the support frame is fixedly connected to one side of the ring main unit main body, one side of the support frame is fixedly connected with a concentration box, and one end of the concentration box is fixedly connected with a control panel; the gas guide assembly is arranged at the top end of the concentration box and used for being matched with the supporting frame to guide the SF gas out of the ring main unit body; and the warning assembly is assembled at the top end of the concentration box and used for warning nearby personnel, and the air guide assembly comprises an air guide fan. According to the technical scheme, the problems that in the prior art, when SF gas in the device leaks, due to the lack of effective treatment measures, it is difficult for surrounding operators to find the leakage in time, and accidents are extremely likely to happen are solved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum ring main unit, and in particular to an air-insulated high-voltage vacuum ring main unit. Background Art

[0002] Air-insulated high-voltage vacuum ring main unit is mainly used to switch on and off load current, short-circuit current and transformer no-load current, and charging current of overhead lines and cable lines at a certain distance, and plays a control and protection role; In the cabinet, the load switches with air insulation are mainly gas-generating type, compressed air type, and vacuum type. The load switches with SF6 insulation are SF6 type. Since the SF6 gas is sealed in the shell, the partition fracture formed by it is invisible. The load switch in the ring network cabinet generally requires three positions, namely cutting off the load, isolating the circuit, and grounding. It is an important switchgear for ring network power supply and terminal power supply; However, when the SF6 gas leaks inside the air-insulated high-voltage vacuum ring main unit in the traditional technology, it is difficult for the surrounding workers to find it in time due to the lack of effective treatment measures, which can easily lead to accidents. Based on this, we propose an air-insulated high-voltage vacuum ring main unit. Summary of the invention

[0003] The present invention proposes an air-insulated high-voltage vacuum ring main unit, which solves the problem in the related art that when SF6 gas leaks inside the air-insulated ring main unit, due to the lack of effective treatment measures, it is difficult for surrounding workers to discover the leakage in time, which easily leads to accidents.

[0004] The technical solution of the present invention is as follows: an air-insulated high-voltage vacuum ring network cabinet, comprising: A ring main unit body, the inner wall of which is fixedly connected with an air pressure sensor and a positioning seat, and the inner side of the positioning seat is rotatably connected with a gas collecting pipe; A support frame, wherein the support frame is fixedly connected to one side of the ring network cabinet body, one side of the support frame is fixedly connected to a centralizing box, and one end of the centralizing box is fixedly connected to a control panel; A gas guide assembly, which is arranged at the top of the central box and is used to cooperate with the support frame to guide SF gas out of the ring main unit body; The warning component is installed on the top of the central box to warn nearby people.

[0005] Preferably, the air guide component comprises: A gas guiding fan is fixedly connected to the top of the centralized box. The output end of the gas guiding fan is fixedly connected with a transmission pipe A, and one end of the transmission pipe A far away from the gas guiding fan is communicated with the centralized box. The input end of the gas guiding fan is fixedly connected with a transmission pipe B, and one end of the transmission pipe B far away from the gas guiding fan is communicated with the gas collecting pipe; A guiding plate A is fixedly connected to the outside of the gas collecting pipe, and a through groove A is formed in the middle of the guiding plate A; A transmission frame is fixedly connected to the top of the centralized box. A transmission shaft rod is rotatably connected to the top of the transmission frame. An eccentric plate and a transmission spur gear are fixedly connected to the outside of the transmission shaft rod. One end of the eccentric plate far away from the transmission shaft rod is rotatably connected with a linkage rod; A transmission rod is slidably connected to one side of the ring main unit close to the positioning seat. One end of the transmission rod located inside the ring main unit is fixedly connected with a guiding pin, and the guiding pin is also movably connected inside the through groove A. One end of the linkage rod far away from the eccentric plate is also rotatably connected with one end of the transmission rod. A transmission motor is fixedly connected to one side of the top of the transmission frame, and the output end of the transmission motor is fixedly connected with the transmission shaft rod.

[0006] Preferably, the warning component includes: An extension seat is fixedly connected to the other side of the transmission frame. An electric push rod is fixedly connected to one side of the extension seat. The output end of the electric push rod is fixedly connected with a push plate. A push rod is slidably connected to the side of the extension seat far away from the electric push rod, and the push rod is also fixedly connected to one end of the push plate. Assembly seats and blocking frames are respectively fixedly connected to both ends of the push rod; A warning shaft rod is rotatably connected to one end of the assembly seat. An accelerating spur gear and a guiding plate B are fixedly connected to the outside of the warning shaft rod, and the accelerating spur gear is meshed with the transmission spur gear. A displacement plate is vertically slidably connected to the bottom end of the assembly seat. A knocking plate is fixedly connected to the bottom end of the displacement plate. A guiding plate C is fixedly connected to the top end of the displacement plate. A through groove B is formed in the middle of the guiding plate C. One end of the guiding plate B far away from the warning shaft rod is also movably connected inside the through groove B; A carrying seat is fixedly connected to one side of the top of the centralized box. One end of the top of the carrying seat is fixedly connected with an assembly ear. A positioning shaft rod is rotatably connected to the top end of the assembly ear. A warning sign is fixedly connected to the outside of the positioning shaft rod. A limiting rod is fixedly connected to the inside of the carrying seat. A sliding block is slidably connected to the outside of the limiting rod. A spiral spring is fixedly connected between one side of the sliding block and the carrying seat. A pushing bar is rotatably connected to the top end of the sliding block. One end of the pushing bar far away from the sliding block is also rotatably connected with the warning sign.

[0007] Preferably, a plurality of air outlet holes are formed in the outer side of the gas collecting pipe, and a gas collecting nozzle is fixedly connected to the inside of each air outlet hole.

[0008] Preferably, one end of the transmission pipe B far from the air guiding fan is made of a flexible material, and a sealing ring is fixedly connected to the connection part between the transmission pipe B and the main body of the ring main unit.

[0009] Preferably, an avoidance hole is formed in one side of the main body of the ring main unit close to the positioning seat, and the transmission rod is connected to the inside of the avoidance hole through a linear bearing.

[0010] Preferably, a sealing piece is fixedly connected to the middle of the transmission rod, and the sealing piece is made of rubber.

[0011] Preferably, a warning bell is fixedly connected to the bottom end of the transmission frame, and the warning bell is made of metal.

[0012] Preferably, the air pressure sensor, the air guiding fan, the transmission motor and the electric push rod are all electrically connected to the control panel.

[0013] Preferably, a conduction column is fixedly connected to one end of the guiding plate B far from the warning shaft rod, and the guiding plate B is connected to the inside of the through groove B through the conduction column.

[0014] The working principle and beneficial effects of the present invention are as follows: In the present invention, through the structural cooperation of the air guiding component and the support frame, when SF6 gas leaks, the SF6 gas in the main body of the ring main unit can be transferred, avoiding suffocation of nearby personnel caused by the dispersion of SF6 gas.

[0015] In the present invention, through the structural cooperation of the warning component, when transferring SF6 gas, it can timely remind non-operating personnel nearby, greatly improving the overall application safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is an internal structural diagram of the main body of the ring main unit of the present invention; Figure 3 is a schematic structural diagram of the air guiding component of the present invention; Figure 4 is an assembled structural diagram of the guiding plate of the present invention; Figure 5 is a transmission structural diagram of the linkage rod of the present invention; Figure 6 is a connection structural diagram of the pushing plate and the pushing rod of the present invention; Figure 7 Schematic diagram of the separation structure of the guide plate and the through groove B of the present invention; Figure 8 Schematic diagram of the transmission structure of the push bar of the present invention.

[0018] In the figure: 1, the main body of the ring main unit; 2, the air pressure sensor; 3, the positioning seat; 4, the gas collecting pipe; 5, the support frame; 6, the centralized box; 7, the control panel; 8, the air guiding component; 9, the warning component; 10, the air guiding fan; 11, the transmission pipe A; 12, the transmission pipe B; 13, the guide plate A; 14, the through groove A; 15, the transmission frame; 16, the transmission shaft rod; 17, the eccentric plate; 18, the transmission spur gear; 19, the linkage rod; 20, the transmission rod; 21, the guide pin; 22, the transmission motor; 23, the extension seat; 24, the electric push rod; 25, the push plate; 26, the push rod; 27, the assembly seat; 28, the blocking frame; 29, the warning shaft rod; 30, the accelerating spur gear; 31, the guide plate B; 32, the displacement plate; 33, the knocking plate; 34, the guide plate C; 35, the through groove B; 36, the warning bell; 37, the mounting seat; 38, the assembly ear; 39, the positioning shaft rod; 40, the warning sign; 41, the limiting rod; 42, the slider; 43, the spiral spring; 44, the push bar. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present invention.

[0020] Embodiment 1 As Figures 1 to 8 shown, this embodiment proposes an air-insulated high-voltage vacuum ring main unit, including: The main body 1 of the ring main unit, the inner wall of the main body 1 of the ring main unit is fixedly connected with an air pressure sensor 2 and a positioning seat 3, and the inner side of the positioning seat 3 is rotatably connected with a gas collecting pipe 4; The support frame 5, the support frame 5 is fixedly connected to one side of the main body 1 of the ring main unit, one side of the support frame 5 is fixedly connected with a centralized box 6, and one end of the centralized box 6 is fixedly connected with a control panel 7; The air guiding component 8, the air guiding component 8 is arranged at the top of the centralized box 6 and is used to cooperate with the support frame 5 to export SF6 gas from the main body 1 of the ring main unit; The warning component 9, the warning component 9 is assembled at the top of the centralized box 6 and is used to warn nearby personnel; In this embodiment, the air pressure sensor 2 is an instrument for measuring the absolute pressure of a gas. The main sensing element is a thin film sensitive to the strength of air pressure and a thimble for control. In terms of the circuit, it is connected to a flexible resistor. When the pressure of the measured gas decreases or increases, the thin film deforms to drive the thimble, and at the same time the resistance value of the resistor will change. The resistance value of the resistor changes. A signal voltage of 0-5V is obtained from the sensing element, received by the data acquisition device after A / D conversion, and then the data acquisition device transmits the result to the control panel 7 in an appropriate form. This is a mature existing technology and will not be elaborated here; In this embodiment, a plurality of air outlet holes are provided on the outer side of the gas collecting pipe 4, and a gas collecting nozzle is fixedly connected to the inside of each air outlet hole. Through the arrangement of the air outlet holes and the gas collecting nozzles, the gas collecting range of the gas collecting pipe 4 can be greatly improved, and the operation blind area of the gas collecting pipe 4 can be reduced; The air guiding assembly 8 includes: An air guiding fan 10, the air guiding fan 10 is fixedly connected to the top of the centralized box 6. The output end of the air guiding fan 10 is fixedly connected to a transmission pipe A11, and one end of the transmission pipe A11 far away from the air guiding fan 10 communicates with the centralized box 6. The input end of the air guiding fan 10 is fixedly connected to a transmission pipe B12, and one end of the transmission pipe B12 far away from the air guiding fan 10 communicates with the gas collecting pipe 4; A guiding plate A13, the guiding plate A13 is fixedly connected to the outer side of the gas collecting pipe 4, and a through groove A14 is provided in the middle of the guiding plate A13; A transmission frame 15, the transmission frame 15 is fixedly connected to the top of the centralized box 6. The top of the transmission frame 15 is rotatably connected to a transmission shaft rod 16. An eccentric plate 17 and a transmission spur gear 18 are fixedly connected to the outer side of the transmission shaft rod 16. One end of the eccentric plate 17 far away from the transmission shaft rod 16 is rotatably connected to a linkage rod 19; A transmission rod 20, the transmission rod 20 is slidably connected to one side of the ring main unit 1 close to the positioning seat 3. One end of the transmission rod 20 located inside the ring main unit 1 is fixedly connected to a guiding pin 21, and the guiding pin 21 is also movably connected to the inside of the through groove A14. One end of the linkage rod 19 far away from the eccentric plate 17 is also rotatably connected to one end of the transmission rod 20. One side of the top of the transmission frame 15 is fixedly connected to a transmission motor 22, and the output end of the transmission motor 22 is fixedly connected to the transmission shaft rod 16; In this embodiment, one end of the transmission pipe B12 far away from the air guiding fan 10 is made of a flexible material, and a sealing ring is fixedly connected to the connection part of the transmission pipe B12 and the ring main unit 1. Through the material characteristics of the transmission pipe B12, effective gas transmission can be realized without affecting the rotation of the gas collecting pipe 4; In this embodiment, an avoidance hole is formed on one side of the main body 1 of the ring main unit close to the positioning seat 3. The transmission rod 20 is connected inside the avoidance hole through a linear bearing. Through the setting of the linear bearing, the friction force during the sliding of the transmission rod 20 can be effectively reduced, making the transmission rod 20 smoother; In this embodiment, a sealing piece is fixedly connected to the middle of the transmission rod 20, and the material of the sealing piece is rubber. Through the setting of the sealing piece, when the sealing piece fits with the main body 1 of the ring main unit, the connection part between the transmission rod 20 and the main body 1 of the ring main unit can be blocked, preventing the gas inside the main body 1 of the ring main unit from leaking out from the connection part; Embodiment 2 As Figures 1 to 8 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes a warning component 9; In this embodiment, the warning component 9 includes: An extension seat 23, the extension seat 23 is fixedly connected to the other side of the transmission frame 15. An electric push rod 24 is fixedly connected to one side of the extension seat 23. The output end of the electric push rod 24 is fixedly connected to a push plate 25. A push rod 26 is slidably connected to the side of the extension seat 23 away from the electric push rod 24, and the push rod 26 is also fixedly connected to one end of the push plate 25. Assembly seats 27 and blocking frames 28 are respectively fixedly connected to both ends of the push rod 26; A warning shaft rod 29, the warning shaft rod 29 is rotatably connected to one end of the assembly seat 27. An accelerating spur gear 30 and a guide plate B31 are fixedly connected to the outer side of the warning shaft rod 29, and the accelerating spur gear 30 is meshed with the transmission spur gear 18. A displacement plate 32 is vertically slidably connected to the bottom end of the assembly seat 27. A knocking plate 33 is fixedly connected to the bottom end of the displacement plate 32. A guide plate C34 is fixedly connected to the top end of the displacement plate 32. A through groove B35 is formed in the middle of the guide plate C34. One end of the guide plate B31 away from the warning shaft rod 29 is also movably connected inside the through groove B35; A mounting seat 37, the mounting seat 37 is fixedly connected to one side of the top of the centralized box 6. One end of the top of the mounting seat 37 is fixedly connected to an assembly ear 38. A positioning shaft rod 39 is rotatably connected to the top end of the assembly ear 38. A warning sign 40 is fixedly connected to the outer side of the positioning shaft rod 39. A limiting rod 41 is fixedly connected to the inside of the mounting seat 37. A slider 42 is slidably connected to the outer side of the limiting rod 41. A spiral spring 43 is fixedly connected between one side of the slider 42 and the mounting seat 37. A push bar 44 is rotatably connected to the top end of the slider 42. One end of the push bar 44 away from the slider 42 is also rotatably connected to the warning sign 40; In this embodiment, a warning bell 36 is fixedly connected to the bottom end of the transmission frame 15, and the material of the warning bell 36 is metal. Through the setting of the warning bell 36, when the knocking plate 33 knocks on the warning bell 36, a louder sound can be generated to warn the nearby personnel that the gas is leaking; In this embodiment, the air pressure sensor 2, the air guiding fan 10, the driving motor 22 and the electric push rod 24 are all electrically connected to the control panel 7. Through the settings of the control panel 7, the air pressure sensor 2, the air guiding fan 10, the driving motor 22 and the electric push rod 24 can be centrally controlled, thereby improving the overall linkage; In this embodiment, a conduction column is fixedly connected to one end of the guiding plate B31 away from the warning shaft rod 29, and the guiding plate B31 is connected to the inside of the through groove B35 through the conduction column. Through the setting of the conduction column, during the continuous rotation of the guiding plate B31, the displacement of the conduction column inside the through groove B35 can be utilized to push the displacement plate 32 to slide back and forth.

[0021] A specific application of the above two embodiments is that during the overall application, the air pressure sensor 2 is used to continuously monitor the gas pressure inside the main body 1 of the ring network cabinet. When the air pressure inside the main body 1 of the ring network cabinet gradually decreases, it means that the main body 1 of the ring network cabinet has a leak. At the same time, the control panel 7 will first control the electric push rod 24 to start, so as to drive the push rod 26 to slide under the support of the extension seat 23 by means of the push plate 25, prompting the blocking frame 28 to move away from the warning sign 40, and at the same time making the assembly seat 27 approach the transmission shaft rod 16. When the accelerating spur gear 30 meshes with the driving spur gear 18, the blocking frame 28 will synchronously move out from the top of the warning sign 40, releasing the block on the warning sign 40. Subsequently, with the contraction of the spiral spring 43, the slider 42 can be driven to displace at the limiting rod 41. And since the push bar 44 is connected between the slider 42 and the warning sign 40, when the slider 42 displaces, the warning sign 40 can be pushed through the push bar 44, thereby driving the warning sign 40 to flip under the support of the positioning shaft rod 39, so as to stand up the warning sign 40 and remind the surrounding personnel that the main body 1 of the ring network cabinet has a leak; At the same time, the control panel 7 controls the driving motor 22 and the air guiding fan 10 to start. Through the operation of the air guiding fan 10, the SF6 gas inside the main body 1 of the ring network cabinet can be pumped out through the gas collecting pipe 4, and injected into the central box 6 through the transmission pipe B12 and the transmission pipe A11 for concentration. In cooperation with the connection between the driving motor 22 and the transmission shaft rod 16, the transmission shaft rod 16 can drive the eccentric plate 17 to rotate. Since the linkage rod 19 is connected between the eccentric plate 17 and the transmission rod 20, when the eccentric plate 17 rotates, the transmission rod 20 can be pushed to reciprocate through the linkage rod 19. And since the guiding pin 21 is also connected to the inside of the through groove A14, when the transmission rod 20 displaces, the guiding plate A13 can be pushed by means of the guiding pin 21. And since the guiding plate A13 is supported by the gas collecting pipe 4, the gas collecting direction of the gas collecting pipe 4 can be adjusted, reducing the operation blind area of the gas collecting pipe 4; The connection between the mating transmission spur gear 18 and the accelerating spur gear 30 can transmit the power at the transmission shaft rod 16 to the warning shaft rod 29, prompting the warning shaft rod 29 to drive the guide plate B31 to rotate. Under the connection between the guide plate B31 and the through groove B35, the displacement plate 32 can follow the rotation of the guide plate B31 and drive the knocking plate 33 to repeatedly knock the warning bell 36, causing the warning bell 36 to sound, thereby warning the nearby personnel.

[0022] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An air-insulated high-voltage vacuum ring main unit, characterized in that, Including: The main body of the ring main unit (1), an air pressure sensor (2) and a positioning seat (3) are fixedly connected to the inner wall of the main body of the ring main unit (1), and a gas collecting pipe (4) is rotatably connected to the inside of the positioning seat (3); A support frame (5), the support frame (5) is fixedly connected to one side of the main body of the ring main unit (1), a centralized box (6) is fixedly connected to one side of the support frame (5), and a control panel (7) is fixedly connected to one end of the centralized box (6); An air guiding component (8), the air guiding component (8) is arranged at the top of the centralized box (6) and is used to cooperate with the support frame (5) to export SF6 gas from the main body of the ring main unit (1); A warning component (9), the warning component (9) is assembled at the top of the centralized box (6) and is used to warn nearby personnel.

2. The air-insulated high-voltage vacuum ring main unit according to claim 1, wherein The air guiding component (8) includes: An air guiding fan (10), the air guiding fan (10) is fixedly connected to the top of the centralized box (6), an output end of the air guiding fan (10) is fixedly connected to a transmission pipe A (11), and one end of the transmission pipe A (11) far from the air guiding fan (10) is communicated with the centralized box (6), an input end of the air guiding fan (10) is fixedly connected to a transmission pipe B (12), and one end of the transmission pipe B (12) far from the air guiding fan (10) is communicated with the gas collecting pipe (4); A guiding plate A (13), the guiding plate A (13) is fixedly connected to the outside of the gas collecting pipe (4), and a through groove A (14) is formed in the middle of the guiding plate A (13); A transmission frame (15), the transmission frame (15) is fixedly connected to the top of the centralized box (6), a transmission shaft rod (16) is rotatably connected to the top of the transmission frame (15), an eccentric plate (17) and a transmission spur gear (18) are fixedly connected to the outside of the transmission shaft rod (16), and one end of the eccentric plate (17) far from the transmission shaft rod (16) is rotatably connected to a linkage rod (19); A transmission rod (20), the transmission rod (20) is slidably connected to one side of the main body of the ring main unit (1) close to the positioning seat (3), one end of the transmission rod (20) located inside the main body of the ring main unit (1) is fixedly connected to a guiding pin (21), and the guiding pin (21) is also movably connected to the inside of the through groove A (14), one end of the linkage rod (19) far from the eccentric plate (17) is also rotatably connected to one end of the transmission rod (20), and a transmission motor (22) is fixedly connected to one side of the top of the transmission frame (15), and an output end of the transmission motor (22) is fixedly connected to the transmission shaft rod (16).

3. The air-insulated high-voltage vacuum ring main unit according to claim 2, wherein, The warning component (9) includes: An extension seat (23), the extension seat (23) is fixedly connected to the other side of the transmission frame (15), an electric push rod (24) is fixedly connected to one side of the extension seat (23), an output end of the electric push rod (24) is fixedly connected to a push plate (25), a push rod (26) is slidably connected to one side of the extension seat (23) far from the electric push rod (24), and the push rod (26) is also fixedly connected to one end of the push plate (25), and an assembly seat (27) and a blocking frame (28) are respectively fixedly connected to both ends of the push rod (26); Warning shaft rod (29), the warning shaft rod (29) is rotatably connected to one end of the assembly seat (27), an acceleration spur gear (30) and a guide plate B (31) are fixedly connected to the outer side of the warning shaft rod (29), and the acceleration spur gear (30) is meshed and connected with the transmission spur gear (18). The bottom end of the assembly seat (27) is vertically slidably connected with a displacement plate (32), a knocking plate (33) is fixedly connected to the bottom end of the displacement plate (32), a guide plate C (34) is fixedly connected to the top end of the displacement plate (32), a through groove B (35) is formed in the middle of the guide plate C (34), and the end of the guide plate B (31) away from the warning shaft rod (29) is also movably connected to the inside of the through groove B (35). Carrying seat (37), the carrying seat (37) is fixedly connected to one side of the top of the centralized box (6). An assembly ear (38) is fixedly connected to one end of the top of the carrying seat (37). A positioning shaft rod (39) is rotatably connected to the top end of the assembly ear (38). A warning sign (40) is fixedly connected to the outer side of the positioning shaft rod (39). A limiting rod (41) is fixedly connected to the inside of the carrying seat (37). A slider (42) is slidably connected to the outer side of the limiting rod (41). A spiral spring (43) is fixedly connected between one side of the slider (42) and the carrying seat (37). A pushing bar (44) is rotatably connected to the top end of the slider (42). The end of the pushing bar (44) away from the slider (42) is also rotatably connected to the warning sign (40).

4. An air-insulated high-voltage vacuum ring main unit according to claim 1, characterized in that, A plurality of air outlet holes are formed in the outer side of the gas collecting pipe (4), and a gas collecting nozzle is fixedly connected to the inside of each air outlet hole.

5. The air-insulated high-voltage vacuum ring main unit according to claim 2, characterized in that, The end of the transmission pipe B (12) away from the air guiding fan (10) is made of a flexible material, and a sealing ring is fixedly connected to the connection part of the transmission pipe B (12) and the ring main cabinet body (1).

6. The air-insulated high-voltage vacuum ring main unit according to claim 2, characterized in that, An avoidance hole is formed in one side of the ring main cabinet body (1) close to the positioning seat (3), and the transmission rod (20) is connected to the inside of the avoidance hole through a linear bearing.

7. An air-insulated high-voltage vacuum ring main unit according to claim 6, characterized in that, A sealing piece is fixedly connected to the middle of the transmission rod (20), and the material of the sealing piece is rubber.

8. The air-insulated high-voltage vacuum ring main unit according to claim 3, characterized in that, A warning bell (36) is fixedly connected to the bottom end of the transmission frame (15), and the material of the warning bell (36) is metal.

9. The air-insulated high-voltage vacuum ring main unit according to claim 3, characterized in that The air pressure sensor (2), the air guiding fan (10), the transmission motor (22) and the electric push rod (24) are all electrically connected to the control panel (7).

10. The air-insulated high-voltage vacuum ring main unit according to claim 3, wherein, A conduction column is fixedly connected to the end of the guide plate B (31) away from the warning shaft rod (29), and the guide plate B (31) is connected to the inside of the through groove B (35) through the conduction column.

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