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 invention relates to the technical field of circuit breakers, and in particular to a high-voltage cabinet with a rapid power-off function. Background Art

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

[0003] An invention patent with application number 202310430548.9 discloses an arc extinguishing device for the contacts of a 10KV center cabinet trolley, and specifically discloses the technical solution of "supporting the main nozzle and the auxiliary nozzle by a support frame and supplying nitrogen to the main nozzle and the auxiliary nozzle through a gas supply bottle, so that the space between the moving contact and the static contact is easily filled with nitrogen, making it difficult for an arc to be generated between the moving contact and the static contact."

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

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

[0006] The technical solution adopted by the present invention is as follows: a high-voltage cabinet with a quick power-off function, comprising a cabinet body, a vacuum circuit breaker assembly and an arc-extinguishing indication component, wherein a circuit breaker chamber is arranged in the cabinet body, 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.

[0007] Furthermore, the static end conductive block is fixedly arranged in the circuit breaker room, one end of the static end conductive block extends through and out of the circuit breaker room, the static contact is fixedly arranged above the static end conductive block, the moving contact is fitted on the static contact, the elastic bellows is fixedly arranged on the moving contact, the moving end cover is fixedly arranged on the elastic bellows, the moving conductive rod is fixedly arranged on the moving end cover, the top end of the moving conductive rod extends through and out of the circuit breaker room, the arc extinguishing housing is fixedly arranged on the static end conductive block, the static contact and the moving contact are both located in the arc extinguishing housing, and the moving end cover is slidably fitted in the arc extinguishing housing.

[0008] Furthermore, the arc extinguishing indication assembly includes a pump, an input pipe, a through straight pipe, a lower semicircular pipe, an inner elastic cover, an outer elastic cover and a one-way exhaust valve. The pump is fixedly arranged on the outside of the arc extinguishing shell, the input pipe is fixedly arranged on the output end of the pump and extends into the arc extinguishing shell, the through straight pipe is horizontally penetrated and fixed on the arc extinguishing shell, two lower semicircular pipes are provided, and the two lower semicircular pipes are respectively fixed at two ends of the through straight pipe, the lower semicircular pipe located in the arc extinguishing shell is fixedly connected to the input pipe, the inner elastic cover is fixedly arranged above the lower semicircular pipe located in the arc extinguishing shell, and the two 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 semicircular pipe outside the arc extinguishing shell, the outer elastic cover is fixedly arranged above the lower semicircular pipe outside the arc extinguishing shell, and the two ends of the outer elastic cover are respectively fixedly connected to the one-way exhaust valve and the through straight pipe.

[0009] Furthermore, the arc extinguishing indication assembly also includes a liquid storage U-shaped tube, a trigger switch and two buoys. The liquid storage U-shaped tube is fixedly arranged on the arc extinguishing outer shell, and the two ends of the liquid storage U-shaped tube are respectively connected with the two lower semicircular tubes. The two buoys are respectively vertically slidably arranged at the two ends of the liquid storage U-shaped tube. The trigger switch is fixed in the liquid storage U-shaped tube and is located directly above the buoy. The trigger switch is located outside the arc extinguishing outer shell.

[0010] Furthermore, a substrate is fixedly provided in the circuit breaker chamber, a monitoring execution switch is fixedly provided on the substrate, an indicator light is fixedly provided on the monitoring execution switch, the monitoring execution switch is electrically connected to the pump, and the indicator light is electrically connected to the trigger switch.

[0011] Furthermore, a trolley is slidably provided on the base plate, a lower wedge-shaped separating and combining block is fixedly provided on the trolley, a U-shaped opening adapted to the moving conductive rod is opened on the lower wedge-shaped separating and combining block, an upper wedge-shaped separating and combining block is fixedly provided through the moving conductive rod, and the upper wedge-shaped separating and combining block is fitted on the lower wedge-shaped separating and combining block.

[0012] Furthermore, 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 component, the monitoring execution switch and the indicator light are all provided in a linear array in multiple groups.

[0013] Furthermore, an independent monitoring battery is provided in the circuit breaker chamber, and the independent monitoring battery is used to supply power to the pump and the monitoring execution switch, and the independent monitoring battery is used to supply power to the trigger switch and the indicator light.

[0014] Furthermore, the inner elastic cover and the outer elastic cover are both made of slow-rebound material.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: 1. Through the design of the arc extinguishing indication component and the monitoring execution switch, the vacuum degree of the arc extinguishing shell in each group of vacuum circuit breaker assemblies can be monitored after the circuit breaker chamber is opened, and the electrical connection relationship between the trigger switch and the indicator light can be used to indicate whether there is a good vacuum degree in the arc extinguishing shell, so as to provide safety reminders before the staff use the trolley to break the circuit.

[0016] 2. In the arc extinguishing assembly, the two ends of the through straight pipe are respectively arranged inside and outside the arc extinguishing shell, and the two ends of the through straight pipe are respectively provided with an inner elastic cover and an outer elastic cover. When the vacuum degree of the arc extinguishing shell is good, the pressure of the vacuum environment in the arc extinguishing shell on the outside of the inner elastic cover is much smaller than the pressure of the air in the circuit breaker room 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 the diameter of the inner elastic cover and the connected lower semicircular pipe. When the pump inputs air, the airflow returns to the circuit breaker room through the path of the input pipe, the inner elastic cover, the through straight pipe, the outer elastic cover and the one-way exhaust valve. During this process, because the diameter of the outer elastic cover and the connected lower semicircular tube is much smaller than the diameter of the inner elastic cover and the connected lower semicircular tube, according to Bernoulli's theorem, the flow rate of the airflow through the outer elastic cover is greater than the flow rate through the inner elastic cover, and the pressure between the inner side of the outer elastic cover and the connected lower semicircular tube is greater than the pressure between the inner side of the inner elastic cover and the connected lower semicircular tube. As a result, the fluid in the liquid storage U-shaped tube flows under the action of the pressure difference at the two end pipe openings, so that the trigger switch located outside the arc extinguishing shell is triggered by the buoy, so that the indicator light comes on, and indicates to the staff the safe working state of "the vacuum in the arc extinguishing shell is good, the risk of arc fire is small, and the switch can be cut off by a trolley". BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a high-voltage cabinet with a rapid power-off function according to the present invention.

[0018] Figure 2 The present invention is a cross-sectional schematic diagram of a high-voltage cabinet with a rapid power-off function.

[0019] Figure 3 It is a cross-sectional schematic diagram of the vacuum circuit breaker assembly of the present invention.

[0020] Figure 4 It is a three-dimensional schematic diagram of the handcart, the lower wedge-shaped separating and combining block and the upper wedge-shaped separating and combining block of the present invention.

[0021] Figure 5 It is a three-dimensional schematic diagram of the arc extinguishing indication assembly of the present invention.

[0022] Figure 6 It is a cross-sectional schematic diagram of the arc extinguishing indication assembly of the present invention.

[0023] Figure 7It is a three-dimensional schematic diagram of the through straight tube and the lower semicircular tube of the present invention.

[0024] Figure 8 It is a three-dimensional schematic diagram of the through straight tube, the lower semicircular tube, the inner elastic cover and the outer elastic cover of the present invention.

[0025] Fig. 9 It is a three-dimensional schematic diagram of the base plate, the trolley, the monitoring execution switch, the indicator light and the independent monitoring battery of the present invention.

[0026] Among them, 1. cabinet, 101. circuit breaker chamber, 2. vacuum circuit breaker assembly, 201. static end conductive block, 202. static contact, 203. moving contact, 204. elastic bellows, 205. moving end cover, 206. moving conductive rod, 207. arc extinguishing shell, 3. base plate, 4. trolley, 5. lower wedge-shaped separation and combination block, 501. U-shaped opening, 6. upper wedge-shaped separation and combination block, 7. arc extinguishing indication assembly, 701. pump, 702. input pipe, 703. through straight pipe, 704. lower semicircular pipe, 705. inner elastic cover, 706. outer elastic cover, 707. one-way exhaust valve, 708. liquid storage U-shaped tube, 709. buoy, 710. trigger switch, 8. monitoring execution switch, 9. indicator light, 10. independent monitoring battery.

[0027] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 on the present invention.

[0030] like Figure 1 to Figure 9As shown, a high-voltage cabinet with a rapid power-off function includes a cabinet body 1, a vacuum circuit breaker assembly 2 and an arc-extinguishing indication component 7. A circuit breaker chamber 101 is provided in the cabinet body 1, and 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 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.

[0031] like Figure 1 to Figure 9 As shown, 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 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 205 is fixedly arranged on the elastic bellows 204, the moving conductive rod 206 is fixedly arranged on the moving end cover 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, the static contact 202 and the moving contact 203 are both located in the arc extinguishing housing 207, and the moving end cover 205 is slidably fitted in the arc extinguishing housing 207.

[0032] like Figure 1 to Figure 9 As shown, the arc extinguishing indication assembly 7 includes 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 arc extinguishing housing 207, the through straight pipe 703 is horizontally penetrated and fixed on the arc extinguishing housing 207, and two lower semicircular pipes 704 are provided, and the two lower semicircular pipes 704 are respectively fixedly arranged at both ends of the through straight pipe 703, and are located outside the arc extinguishing housing. The lower semicircular tube 704 in the shell 207 is fixedly connected to the input pipe 702, the inner elastic cover 705 is fixedly arranged above the lower semicircular tube 704 in the arc-extinguishing outer shell 207, and the two 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 semicircular tube 704 outside the arc-extinguishing outer shell 207, and the outer elastic cover 706 is fixedly arranged above the lower semicircular tube 704 outside the arc-extinguishing outer shell 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 pipe 703.

[0033] like Figure 1 to Figure 9As shown, the arc extinguishing indication component 7 also includes a liquid storage U-shaped tube 708, a trigger switch 710 and two buoys 709. The liquid storage U-shaped tube 708 is fixedly arranged on the arc extinguishing housing 207, and the two ends of the liquid storage U-shaped tube 708 are respectively connected with the two lower semicircular tubes 704. The two buoys 709 are respectively vertically slidably arranged at the two ends of the liquid storage U-shaped tube 708. The trigger switch 710 is fixedly arranged in the liquid storage U-shaped tube 708 and is located directly above the buoy 709. The trigger switch 710 is located outside the arc extinguishing housing 207.

[0034] like Figure 1 to Figure 9 As shown, a substrate 3 is fixedly provided in the circuit breaker chamber 101, a monitoring execution switch 8 is fixedly provided on the substrate 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.

[0035] like Figure 1 to Figure 9 As shown, a trolley 4 is slidably provided on the base plate 3, a lower wedge-shaped separating 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 separating and combining block 5, an upper wedge-shaped separating and combining block 6 is fixedly penetrated on the movable conductive rod 206, and the upper wedge-shaped separating and combining block 6 is fitted on the lower wedge-shaped separating and combining block 5.

[0036] like Figure 1 to Figure 9 As shown, 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 multiple groups in a linear array.

[0037] like Figure 1 to Figure 9 As shown, 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 .

[0038] like Figure 1 to Figure 9 As shown, the inner elastic cover 705 and the outer elastic cover 706 are both made of slow rebound material.

[0039] When in use, the static end conductive block 201 and the dynamic conductive rod 206 are connected to different electrical components in the busbar room and the cable room respectively. Under normal conditions, the lower wedge-shaped split-and-close block 5 is pressed tightly against the upper wedge-shaped split-and-close block 6, and the dynamic conductive rod 206, the dynamic end cover plate 205, the elastic bellows 204 and the dynamic contact 203 are pressed tightly by pressure, so that the dynamic contact 203 is in contact with the static contact 202 and is conductive.

[0040] When the circuit breaker is disconnected, the staff pulls the trolley 4 to make the trolley 4 and the lower wedge-shaped separating and combining block 5 slide horizontally, thereby reducing the pressure on the upper wedge-shaped separating and combining block 6 and causing the moving contact 203 to separate from the static contact 202, thereby achieving circuit breaker pulling.

[0041] Before breaking the circuit breaker, the staff monitors the vacuum degree of the vacuum circuit breaker assembly 2 in advance, so as to conduct a quick safety assessment. Specifically, the staff presses the monitoring execution switch 8 to control the pump 701 to start working.

[0042] The two ends of the through straight pipe 703 are respectively arranged inside and outside the arc extinguishing housing 207, and the two ends of the through straight pipe 703 are respectively provided with an inner elastic cover 705 and an outer elastic cover 706. When the vacuum degree of the arc extinguishing housing 207 is good, the pressure of the vacuum environment in the arc extinguishing housing 207 on the outside of the inner elastic cover 705 is much smaller than the pressure of the air in the circuit breaker chamber 101 on the outside of the outer elastic cover 706. Therefore, the diameter of the outer elastic cover 706 and the connected lower semicircular pipe 704 is much smaller than the diameter of the inner elastic cover 705 and the connected lower semicircular pipe 704. When the pump 701 inputs air, the airflow returns to the circuit breaker chamber 101 through the path of 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 diameter of the outer elastic cover 706 and the connected lower semicircular tube 704 is much smaller than the diameter of the inner elastic cover 705 and the connected lower semicircular tube 704, according to Bernoulli's theorem, the flow rate of the airflow through the outer elastic cover 706 is greater than the flow rate through the inner elastic cover 705, and the pressure between the inner side of the outer elastic cover 706 and the connected lower semicircular tube 704 is greater than the pressure between the inner side of the inner elastic cover 705 and the connected lower semicircular tube 704, so that the fluid in the liquid storage U-shaped tube 708 flows under the action of the pressure difference at the two end nozzles, so that the trigger switch 710 located on the outside of the arc extinguishing shell 207 is triggered by the buoy 709, so that the indicator light 9 lights up, and indicates to the staff that "the vacuum degree in the arc extinguishing shell 207 is good, the risk of arc fire is small, and the switch can be disconnected by the trolley 4" is in a safe working state.

[0043] When the vacuum degree of the arc-extinguishing housing 207 is poor, a certain amount of air infiltrates the arc-extinguishing housing 207, so that the outer side of the inner elastic cover 705 and the outer side of the outer elastic cover 706 are both subjected to air pressure and have a similar degree of contraction. When the pump 701 inputs air, the diameter between the inner side of the inner elastic cover 705 and the lower semicircular tube 704 is similar to the diameter between the inner side of the outer elastic cover 706 and the lower semicircular tube 704, so that the flow rate of the airflow above the two end openings of the liquid storage U-shaped tube 708 is similar, the fluid in the liquid storage U-shaped tube 708 does not flow significantly, the trigger switch 710 located on the outer side of the arc-extinguishing housing 207 is not triggered by the buoy 709, and the indicator light 9 is not on. Therefore, the staff can know 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 is not on after pressing the monitoring execution switch 8.

[0044] In the arc extinguishing indication assembly 7, it is worth pointing out that the inner elastic cover 705 and the outer elastic cover 706 made of slow-rebound material can be deformed according to the pressure conditions in the arc extinguishing housing 207 and the pressure conditions in the circuit breaker chamber 101 during a sufficiently long standby time to adjust the pipe diameters at the inlets and outlets of the through-through straight pipe 703. At the same time, when the pump 701 supplies gas to the input pipe 702 and the through-through straight pipe 703, the inner elastic cover 705 and the outer elastic cover 706 made of slow-rebound material can maintain the previous deformation state during the short gas supply test process, so as to prevent the airflow input by the pump 701 from affecting the pipe diameters at the inlets and outlets of the through-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.

[0045] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which 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).

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: 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 shell (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 shell (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 shell (207), and the outer elastic cover (706) is fixedly arranged above the lower semicircular tube (704) outside the arc extinguishing shell (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).

4. The high-voltage cabinet with rapid power-off function according to claim 3 is characterized in that: 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).

5. The high-voltage cabinet with rapid power-off function according to claim 4 is 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).

6. A high-voltage cabinet with a rapid power-off function according to claim 5, 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).

7. The high-voltage cabinet with rapid power-off function according to claim 6, 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.

8. The high-voltage cabinet with rapid power-off function according to claim 7, 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).

9. The high-voltage cabinet with rapid power-off function according to claim 8, characterized in that: The inner elastic cover (705) and the outer elastic cover (706) are both made of slow-rebound material.

Images