A high voltage cabinet with rapid power-off function

Abstract

The present invention relates to the technical field of circuit breakers, and discloses a high-voltage cabinet with a rapid power-off function, comprising a cabinet, a vacuum circuit breaker assembly and an arc-extinguishing indication component, wherein a circuit breaker chamber is arranged in the cabinet, and the vacuum circuit breaker assembly and the arc-extinguishing indication component are arranged in the circuit breaker chamber, and the vacuum circuit breaker assembly comprises a static end conductive block, a static contact, a moving contact, an elastic bellows, a moving end cover plate, a moving conductive rod and an arc-extinguishing housing. The present invention specifically provides a high-voltage cabinet with a rapid power-off function that pre-confirms the vacuum degree of the vacuum circuit breaker before breaking the circuit and has a warning function.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and specifically refers to a high-voltage cabinet with a fast power-off function. Background Art

[0002] The main components of a high-voltage switchgear cabinet are a busbar chamber, a circuit breaker chamber, a cable chamber, and a relay and instrument chamber.

[0003] A patent for invention with the application number 202310430548.9 discloses an arc extinguishing device for the moving and static contacts of a 10KV medium-mounted cabinet handcart, and specifically discloses the technical solution of "supporting the main nozzle and the auxiliary nozzle through a support frame and supplying nitrogen to the main nozzle and the auxiliary nozzle through a gas supply cylinder, so that it is easy to fill nitrogen between the moving contact and the static contact, and it is not easy to generate an arc between the moving contact and the static contact".

[0004] Although the technical solution of this application has the function of enhancing the arc extinguishing ability between the moving and static contacts by spraying nitrogen, it is not applicable to high-voltage cabinets with vacuum circuit breakers. At the same time, the method of setting a nitrogen cylinder, a pressure vessel, outside the electrical cabinet will pose a risk of high-pressure gas leakage when the electrical cabinet catches fire or is impacted. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, the present invention provides a high-voltage cabinet with a fast power-off function. In order to solve the problem of insufficient breaking reliability of high-voltage cabinets with vacuum circuit breakers in the prior art, the present invention proposes a high-voltage cabinet with a fast power-off function that pre-confirms the vacuum degree of the vacuum circuit breaker before breaking and has a warning function.

[0006] The technical solution adopted by the present invention is as follows: A high-voltage cabinet with a fast power-off function includes a cabinet body, a vacuum circuit breaker assembly, and an arc extinguishing indication assembly. A circuit breaker chamber is provided inside the cabinet body, and the vacuum circuit breaker assembly and the arc extinguishing indication assembly are arranged in the circuit breaker chamber. The vacuum circuit breaker assembly includes a static end conductive block, a static contact, a moving contact, an elastic bellows, a moving end cover plate, a moving conductive rod, and an arc extinguishing housing.

[0007] Further, the static end conductive block is fixedly arranged in the circuit breaker chamber, one end of the static end conductive block extends through to the outside of the circuit breaker chamber, the static contact is fixedly arranged above the static end conductive block, the moving contact is attached to the static contact, the elastic bellows is fixedly arranged on the moving contact, the moving end cover plate is fixedly arranged on the elastic bellows, the moving conductive rod is fixedly arranged on the moving end cover plate, the top end of the moving conductive rod extends through to the outside of the circuit breaker chamber, the arc extinguishing housing is fixedly arranged on the static end conductive block, both the static contact and the moving contact are located inside the arc extinguishing housing, and the moving end cover plate is slidably attached to the inside of the arc extinguishing housing.

[0008] Further, the arc extinguishing indication assembly includes a pump, an input pipe, a through straight pipe, a lower semi-circular pipe, an inner elastic cover, an outer elastic cover, and a one-way exhaust valve. The pump is fixedly arranged outside the arc extinguishing housing. The input pipe is fixedly arranged at the output end of the pump and extends through and into the arc extinguishing housing. The through straight pipe is horizontally and fixedly arranged through the arc extinguishing housing. There are two lower semi-circular pipes. The two lower semi-circular pipes are respectively fixedly arranged at both ends of the through straight pipe. The lower semi-circular pipe located inside the arc extinguishing housing is fixedly connected to the input pipe. The inner elastic cover is fixedly arranged above the lower semi-circular pipe located inside the arc extinguishing housing. Both ends of the inner elastic cover are respectively fixedly connected to the through straight pipe and the input pipe. The one-way exhaust valve is fixedly arranged on the lower semi-circular pipe located outside the arc extinguishing housing. The outer elastic cover is fixedly arranged above the lower semi-circular pipe located outside the arc extinguishing housing. Both ends of the outer elastic cover are respectively fixedly connected to the one-way exhaust valve and the through straight pipe.

[0009] Further, the arc extinguishing indication assembly further includes a liquid storage U-shaped pipe, a trigger switch, and two floating buoys. The liquid storage U-shaped pipe is fixedly arranged through the arc extinguishing housing. Both ends of the liquid storage U-shaped pipe are respectively in through communication with the two lower semi-circular pipes. The two floating buoys are respectively vertically slidably arranged at both ends of the liquid storage U-shaped pipe. The trigger switch is fixedly arranged inside the liquid storage U-shaped pipe and directly above the floating buoy. The trigger switch is located outside the arc extinguishing housing.

[0010] Further, a substrate is fixedly arranged inside the circuit breaker chamber. A monitoring and execution switch is fixedly arranged on the substrate. An indicator light is fixedly arranged on the monitoring and execution switch. The monitoring and execution switch is electrically connected to the pump. The indicator light is electrically connected to the trigger switch.

[0011] Further, a trolley is slidably arranged on the substrate. A lower wedge-shaped splitting and combining block is fixedly arranged on the trolley. A U-shaped opening adapted to the moving conductive rod is formed on the lower wedge-shaped splitting and combining block. An upper wedge-shaped splitting and combining block is fixedly arranged through the moving conductive rod. The upper wedge-shaped splitting and combining block is fitted on the lower wedge-shaped splitting and combining block.

[0012] Further, multiple groups of the vacuum circuit breaker assembly, the trolley, the lower wedge-shaped splitting and combining block, the upper wedge-shaped splitting and combining block, the arc extinguishing indication assembly, the monitoring and execution switch, and the indicator light are linearly arrayed.

[0013] Further, an independent monitoring battery is arranged inside the circuit breaker chamber. The independent monitoring battery is used to supply power to the pump and the monitoring and execution switch. The independent monitoring battery is used to supply power to the trigger switch and the indicator light.

[0014] Further, both the inner elastic cover and the outer elastic cover are made of slow rebound materials.

[0015] The beneficial effects achieved by the present invention with the above structure are as follows:

[0016] 1. Through the design of the arc extinguishing indication component and the monitoring execution switch, it is possible to monitor the vacuum degree of the arc extinguishing housing in each vacuum circuit breaker assembly after opening the circuit breaker chamber, and indicate whether there is a good vacuum degree in the arc extinguishing housing through the electrical connection relationship between the trigger switch and the indicator light, so as to give a safety prompt before the operator disconnects the circuit breaker by the trolley.

[0017] 2. In the arc extinguishing component, both ends of the through straight pipe are respectively arranged inside and outside the arc extinguishing housing, and an inner elastic cover and an outer elastic cover are respectively arranged at both ends of the through straight pipe. When the vacuum degree of the arc extinguishing housing is good, the vacuum environment inside the arc extinguishing housing has a much smaller pressure on the outside of the inner elastic cover than the air pressure in the circuit breaker chamber on the outside of the outer elastic cover. Therefore, the diameter of the outer elastic cover and the connected lower semicircular pipe is much smaller than that of the inner elastic cover and the connected lower semicircular pipe. When the pump machine inputs air, the air flow returns to the circuit breaker chamber through the input pipe, inner elastic cover, through straight pipe, outer elastic cover and one-way exhaust valve. During this process, because the diameter of the outer elastic cover and the connected lower semicircular pipe is much smaller than that of the inner elastic cover and the connected lower semicircular pipe, according to Bernoulli's theorem, the flow velocity of the air flow passing through the outer elastic cover is greater than that passing through the inner elastic cover, and the pressure between the inner side of the outer elastic cover and the connected lower semicircular pipe is greater than the pressure between the inner side of the inner elastic cover and the connected lower semicircular pipe, so that the fluid in the liquid storage U-shaped pipe flows under the action of the pressure difference at both ends of the pipe orifice, causing the trigger switch located outside the arc extinguishing housing to be triggered by the float, so that the indicator light lights up, and indicates to the operator the safe working state of "the vacuum degree in the arc extinguishing housing is good, the risk of arc ignition is small, and the circuit breaker can be disconnected by the trolley". BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a high-voltage cabinet with a fast power-off function according to the present invention.

[0019] Figure 2 It is a sectional schematic diagram of a high-voltage cabinet with a fast power-off function according to the present invention.

[0020] Figure 3 It is a sectional schematic diagram of the vacuum circuit breaker assembly according to the present invention.

[0021] Figure 4 It is a three-dimensional schematic diagram of the trolley, lower wedge-shaped split block and upper wedge-shaped split block according to the present invention.

[0022] Figure 5 It is a three-dimensional schematic diagram of the arc extinguishing indication component according to the present invention.

[0023] Figure 6 It is a sectional schematic diagram of the arc extinguishing indication component according to the present invention.

[0024] Figure 7It is a three-dimensional schematic diagram of the through straight pipe and the lower semi-circular pipe of the present invention.

[0025] Figure 8 It is a three-dimensional schematic diagram of the through straight pipe, the lower semi-circular pipe, the inner elastic cover and the outer elastic cover of the present invention.

[0026] Figure 9 It is a three-dimensional schematic diagram of the substrate, the handcart, the monitoring and execution switch, the indicator light and the independent monitoring battery of the present invention.

[0027] Wherein, 1. Cabinet body, 101. Circuit breaker chamber, 2. Vacuum circuit breaker assembly, 201. Static end conductive block, 202. Static contact, 203. Moving contact, 204. Elastic corrugated pipe, 205. Moving end cover plate, 206. Moving conductive rod, 207. Arc extinguishing housing, 3. Substrate, 4. Handcart, 5. Lower wedge-shaped separating and combining block, 501. U-shaped opening, 6. Upper wedge-shaped separating and combining block, 7. Arc extinguishing indication assembly, 701. Pump, 702. Input pipe, 703. Through straight pipe, 704. Lower semi-circular pipe, 705. Inner elastic cover, 706. Outer elastic cover, 707. One-way exhaust valve, 708. Liquid storage U-shaped pipe, 709. Float, 710. Trigger switch, 8. Monitoring and execution switch, 9. Indicator light, 10. Independent monitoring battery.

[0028] The attached drawings are used to provide further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. 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 attached 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 of 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 belong to the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] Such as Figures 1 to 9As shown in the figure, a high-voltage cabinet with a fast power-off function includes a cabinet body 1, a vacuum circuit breaker assembly 2, and an arc extinguishing indication assembly 7. A circuit breaker chamber 101 is provided inside the cabinet body 1. The vacuum circuit breaker assembly 2 and the arc extinguishing indication assembly 7 are arranged inside the circuit breaker chamber 101. The vacuum circuit breaker assembly 2 includes a static end conductive block 201, a static contact 202, a moving contact 203, an elastic bellows 204, a moving end cover plate 205, a moving conductive rod 206, and an arc extinguishing housing 207.

[0032] As Figures 1 to 9 shown in the figure, the static end conductive block 201 is fixedly arranged inside the circuit breaker chamber 101. One end of the static end conductive block 201 extends through to the outside of the circuit breaker chamber 101. The static contact 202 is fixedly arranged above the static end conductive block 201. The moving contact 203 is fitted on the static contact 202. The elastic bellows 204 is fixedly arranged on the moving contact 203. The moving end cover plate 205 is fixedly arranged on the elastic bellows 204. The moving conductive rod 206 is fixedly arranged on the moving end cover plate 205. The top end of the moving conductive rod 206 extends through to the outside of the circuit breaker chamber 101. The arc extinguishing housing 207 is fixedly arranged on the static end conductive block 201. Both the static contact 202 and the moving contact 203 are located inside the arc extinguishing housing 207. The moving end cover plate 205 is slidably fitted inside the arc extinguishing housing 207.

[0033] As Figures 1 to 9 shown in the figure, the arc extinguishing indication assembly 7 includes a pump 701, an input pipe 702, a through straight pipe 703, a lower semi-circular pipe 704, an inner elastic cover 705, an outer elastic cover 706, and a one-way exhaust valve 707. The pump 701 is fixedly arranged outside the arc extinguishing housing 207. The input pipe 702 is fixedly arranged on the output end of the pump 701 and extends through to the inside of the arc extinguishing housing 207. The through straight pipe 703 is horizontally and fixedly arranged on the arc extinguishing housing 207. There are two lower semi-circular pipes 704. The two lower semi-circular pipes 704 are respectively fixedly arranged at both ends of the through straight pipe 703. The lower semi-circular pipe 704 located inside the arc extinguishing housing 207 is fixedly connected to the input pipe 702. The inner elastic cover 705 is fixedly arranged above the lower semi-circular pipe 704 located inside the arc extinguishing housing 207. Both ends of the inner elastic cover 705 are respectively fixedly connected to the through straight pipe 703 and the input pipe 702. The one-way exhaust valve 707 is fixedly arranged on the lower semi-circular pipe 704 located outside the arc extinguishing housing 207. The outer elastic cover 706 is fixedly arranged above the lower semi-circular pipe 704 located outside the arc extinguishing housing 207. Both ends of the outer elastic cover 706 are respectively fixedly connected to the one-way exhaust valve 707 and the through straight pipe 703.

[0034] As Figures 1 to 9As shown, the arc extinguishing indication component 7 further includes a liquid storage U-shaped tube 708, a trigger switch 710, and two floaters 709. The liquid storage U-shaped tube 708 is fixedly arranged through the arc extinguishing housing 207. Both ends of the liquid storage U-shaped tube 708 are communicated with the two lower semi-circular tubes 704 through penetration. The two floaters 709 are respectively arranged to slide vertically at both ends of the liquid storage U-shaped tube 708. The trigger switch 710 is fixedly arranged inside the liquid storage U-shaped tube 708 and is located directly above the floater 709. The trigger switch 710 is located outside the arc extinguishing housing 207.

[0035] As Figures 1 to 9 shown, a substrate 3 is fixedly arranged inside the circuit breaker chamber 101. A monitoring and execution switch 8 is fixedly arranged on the substrate 3. An indicator light 9 is fixedly arranged on the monitoring and execution switch 8. The monitoring and execution switch 8 is electrically connected to the pump 701. The indicator light 9 is electrically connected to the trigger switch 710.

[0036] As Figures 1 to 9 shown, a trolley 4 is slidably arranged on the substrate 3. A lower wedge-shaped separating and combining block 5 is fixedly arranged on the trolley 4. A U-shaped opening 501 adapted to the moving conducting rod 206 is formed on the lower wedge-shaped separating and combining block 5. An upper wedge-shaped separating and combining block 6 is fixedly arranged through the moving conducting rod 206. The upper wedge-shaped separating and combining block 6 is attached to the lower wedge-shaped separating and combining block 5.

[0037] As Figures 1 to 9 shown, multiple groups of the vacuum circuit breaker assembly 2, the trolley 4, the lower wedge-shaped separating and combining block 5, the upper wedge-shaped separating and combining block 6, the arc extinguishing indication component 7, the monitoring and execution switch 8, and the indicator light 9 are linearly arrayed.

[0038] As Figures 1 to 9 shown, an independent monitoring battery 10 is arranged inside the circuit breaker chamber 101. The independent monitoring battery 10 is used to supply power to the pump 701 and the monitoring and execution switch 8. The independent monitoring battery 10 is used to supply power to the trigger switch 710 and the indicator light 9.

[0039] As Figures 1 to 9 shown, both the inner elastic cover 705 and the outer elastic cover 706 are made of slow rebound materials.

[0040] During specific use, the static end conducting block 201 and the moving conducting rod 206 are respectively connected to different electrical components in the busbar chamber and the cable chamber. Under normal conditions, the lower wedge-shaped separating and combining block 5 tightly presses on the upper wedge-shaped separating and combining block 6, and presses the moving conducting rod 206, the moving end cover plate 205, the elastic corrugated pipe 204, and the moving contact 203 through pressure, so that the moving contact 203 is in contact and conduction with the static contact 202.

[0041] When opening the circuit breaker, the operator pulls the trolley 4, causing the trolley 4 and the lower wedge-shaped separating and combining block 5 to slide horizontally. As a result, the pressure on the upper wedge-shaped separating and combining block 6 decreases, prompting the moving contact 203 to separate from the static contact 202, thus achieving the opening of the circuit breaker.

[0042] Before opening the circuit breaker, the operator pre-monitors the vacuum degree of the vacuum circuit breaker assembly 2 to conduct a rapid safety assessment. Specifically, the operator presses the monitoring execution switch 8 to control the pump 701 to start working.

[0043] Both ends of the through straight pipe 703 are respectively arranged inside and outside the arc extinguishing housing 207. At the same time, an inner elastic cover 705 and an outer elastic cover 706 are respectively arranged at both ends of the through straight pipe 703. When the vacuum degree of the arc extinguishing housing 207 is good, the vacuum environment inside the arc extinguishing housing 207 has a much lower pressure on the outside of the inner elastic cover 705 than the air pressure in the circuit breaker chamber 101 on the outside of the outer elastic cover 706. Therefore, the pipe diameters of the outer elastic cover 706 and the connected lower semi-circular pipe 704 are much smaller than those of the inner elastic cover 705 and the connected lower semi-circular pipe 704. When the pump 701 inputs air, the air flow returns to the circuit breaker chamber 101 through the input pipe 702, the inner elastic cover 705, the through straight pipe 703, the outer elastic cover 706, and the one-way exhaust valve 707. During this process, because the pipe diameters of the outer elastic cover 706 and the connected lower semi-circular pipe 704 are much smaller than those of the inner elastic cover 705 and the connected lower semi-circular pipe 704, according to Bernoulli's theorem, the flow velocity of the air flow passing through the outer elastic cover 706 is greater than that passing through the inner elastic cover 705, and the pressure inside the outer elastic cover 706 and the connected lower semi-circular pipe 704 is greater than the pressure inside the inner elastic cover 705 and the connected lower semi-circular pipe 704. As a result, the fluid in the liquid storage U-shaped pipe 708 flows under the action of the pressure difference between the two ends of the pipe orifice, causing the trigger switch 710 located outside the arc extinguishing housing 207 to be triggered by the float 709, thus turning on the indicator light 9 and indicating to the operator the safe working state of "the vacuum degree inside the arc extinguishing housing 207 is good, the risk of arc ignition is small, and the circuit breaker can be opened by the trolley 4".

[0044] When the vacuum degree of the arc extinguishing housing 207 is poor, a certain amount of air infiltrates into the arc extinguishing housing 207. As a result, both the outer side of the inner elastic cover 705 and the outer side of the outer elastic cover 706 are subjected to air pressure and have an approximate degree of shrinkage. When the pump 701 inputs air, the pipe diameter between the inner side of the inner elastic cover 705 and the lower semicircular pipe 704 is approximately the same as the pipe diameter between the inner side of the outer elastic cover 706 and the lower semicircular pipe 704. Thus, the flow velocity of the air above the two ends of the liquid storage U-shaped pipe 708 is approximately the same, and the fluid in the liquid storage U-shaped pipe 708 does not flow significantly. The trigger switch 710 located outside the arc extinguishing housing 207 is not triggered by the buoy 709, and the indicator light 9 does not light up. Therefore, the staff can learn the warning working state of "the vacuum degree in the arc extinguishing housing 207 is poor, and the vacuum circuit breaker assembly 2 needs to be repaired under good protection" according to the situation that the indicator light 9 does not light up after pressing the monitoring execution switch 8.

[0045] In the arc extinguishing indication assembly 7, it is worth noting that the inner elastic cover 705 and the outer elastic cover 706 made of slow rebound materials can deform according to the pressure conditions in the arc extinguishing housing 207 and the breaker chamber 101 during a sufficiently long standby time to adjust the pipe diameters at the two ends of the through straight pipe 703. At the same time, when the pump 701 supplies air to the input pipe 702 and the through straight pipe 703, the inner elastic cover 705 and the outer elastic cover 706 made of slow rebound materials can maintain the previous deformation state during a short air supply test process, preventing the air flow input by the pump 701 from affecting the pipe diameters at the two ends of the through straight pipe 703, so that the arc extinguishing indication assembly 7 cannot normally indicate whether the vacuum degree of the vacuum circuit breaker assembly 2 is good.

[0046] The above is only the 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 and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A high-voltage cabinet with a rapid power-off function, characterized in that: The invention comprises a cabinet (1), a vacuum circuit breaker assembly (2) and an arc extinguishing indication component (7); a circuit breaker chamber (101) is provided in the cabinet (1); the vacuum circuit breaker assembly (2) and the arc extinguishing indication component (7) are arranged in the circuit breaker chamber (101); the vacuum circuit breaker assembly (2) comprises a static end conductive block (201), a static contact (202), a movable contact (203), an elastic bellows (204), a movable end cover plate (205), a movable conductive rod (206) and an arc extinguishing housing (207); The arc extinguishing indication assembly (7) comprises a pump (701), an input pipe (702), a through straight pipe (703), a lower semicircular pipe (704), an inner elastic cover (705), an outer elastic cover (706) and a one-way exhaust valve (707); the pump (701) is fixedly arranged on the outside of the arc extinguishing housing (207); the input pipe (702) is fixedly arranged on the output end of the pump (701) and extends through the inside of the arc extinguishing housing (207); the through straight pipe (703) is horizontally penetrated and fixedly arranged on the arc extinguishing housing (207); two lower semicircular pipes (704) are provided, and the two lower semicircular pipes (704) are respectively fixedly arranged at two ends of the through straight pipe (703) and are located in the arc extinguishing housing ( The lower semicircular tube (704) in the arc-extinguishing housing (207) is fixedly connected to the input tube (702), the inner elastic cover (705) is fixedly arranged above the lower semicircular tube (704) in the arc-extinguishing housing (207), and the two ends of the inner elastic cover (705) are respectively fixedly connected to the through straight tube (703) and the input tube (702), the one-way exhaust valve (707) is fixedly arranged on the lower semicircular tube (704) outside the arc-extinguishing housing (207), and the outer elastic cover (706) is fixedly arranged above the lower semicircular tube (704) outside the arc-extinguishing housing (207), and the two ends of the outer elastic cover (706) are respectively fixedly connected to the one-way exhaust valve (707) and the through straight tube (703); The arc extinguishing indication assembly (7) further comprises a liquid storage U-shaped tube (708), a trigger switch (710) and two buoys (709); the liquid storage U-shaped tube (708) is fixedly disposed on the arc extinguishing housing (207); two ends of the liquid storage U-shaped tube (708) are respectively connected to the two lower semicircular tubes (704); the two buoys (709) are respectively vertically slidably disposed on the two ends of the liquid storage U-shaped tube (708); the trigger switch (710) is fixedly disposed in the liquid storage U-shaped tube (708) and is located directly above the buoys (709); and the trigger switch (710) is located outside the arc extinguishing housing (207).

2. A high voltage cabinet with a rapid power-off function according to claim 1, characterized in that: The static end conductive block (201) is fixedly arranged in the circuit breaker chamber (101); one end of the static end conductive block (201) extends through and out of the circuit breaker chamber (101); the static contact (202) is fixedly arranged above the static end conductive block (201); the moving contact (203) is fitted on the static contact (202); the elastic bellows (204) is fixedly arranged on the moving contact (203); and the moving end cover plate (205) is fixedly arranged on the elastic bellows. The movable conductive rod (206) is fixedly mounted on the movable end cover plate (205), the top end of the movable conductive rod (206) extends through the outside of the circuit breaker chamber (101), the arc extinguishing housing (207) is fixedly mounted on the static end conductive block (201), the static contact (202) and the movable contact (203) are both located in the arc extinguishing housing (207), and the movable end cover plate (205) is slidably fitted in the arc extinguishing housing (207).

3. A high voltage cabinet with a rapid power-off function according to claim 2, characterized in that: A base plate (3) is fixedly provided in the circuit breaker chamber (101), a monitoring execution switch (8) is fixedly provided on the base plate (3), an indicator light (9) is fixedly provided on the monitoring execution switch (8), the monitoring execution switch (8) is electrically connected to the pump (701), and the indicator light (9) is electrically connected to the trigger switch (710).

4. The high-voltage cabinet with rapid power-off function according to claim 3 is characterized in that: A trolley (4) is slidably provided on the base plate (3), a lower wedge-shaped splitting and combining block (5) is fixedly provided on the trolley (4), a U-shaped opening (501) adapted to the movable conductive rod (206) is opened on the lower wedge-shaped splitting and combining block (5), an upper wedge-shaped splitting and combining block (6) is fixedly provided through the movable conductive rod (206), and the upper wedge-shaped splitting and combining block (6) is fitted on the lower wedge-shaped splitting and combining block (5).

5. The high-voltage cabinet with rapid power-off function according to claim 4 is characterized in that: The vacuum circuit breaker assembly (2), the trolley (4), the lower wedge-shaped splitting and combining block (5), the upper wedge-shaped splitting and combining block (6), the arc extinguishing indication component (7), the monitoring execution switch (8) and the indicator light (9) are all provided in a plurality of groups in a linear array.

6. A high-voltage cabinet with a rapid power-off function according to claim 5, characterized in that: An independent monitoring battery (10) is provided in the circuit breaker chamber (101), and the independent monitoring battery (10) is used to supply power to the pump (701) and the monitoring execution switch (8), and the independent monitoring battery (10) is used to supply power to the trigger switch (710) and the indicator light (9).

7. The high-voltage cabinet with rapid power-off function according to claim 6, characterized in that: The inner elastic cover (705) and the outer elastic cover (706) are both made of slow-rebound material.

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