A high-voltage ac vacuum circuit breaker

Abstract

This utility model discloses a high-voltage AC vacuum circuit breaker, specifically relating to the field of circuit breaker technology. It includes a housing, a circuit breaker control console, and a three-position isolator control console. The circuit breaker control console is located at the bottom of the three-position isolator control console. A second sealing plate is bolted to one side of the housing, and both the circuit breaker control console and the three-position isolator control console are fixedly installed on one side of the second sealing plate. Multiple circuit breaker bodies are fixedly installed on one side of the circuit breaker control console, inside the housing. This utility model fills the gas tank with sulfur hexafluoride through an inflation valve seat until the pressure gauge shows the rated pressure. When maintenance of the gas tank is required, a gas recovery device is connected through the inflation valve seat, and the first sealing plate is bolted to the other side of the housing. Opening the explosion-proof pressure relief port reduces the pressure inside the tank. The structure is simple, facilitates the detection of gas pressure inside the tank, and offers high safety performance.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and more specifically, to a high-voltage AC vacuum circuit breaker. Background Technology

[0002] Circuit breakers are one of the most important control and protection devices in power systems. Their core function is to connect or disconnect circuits under normal and fault conditions, and they have the ability to extinguish arcs to safely cut off current. Gas-insulated switchgear seals circuit breakers, disconnectors, busbars and other components in the same gas chamber through a gas box, forming a compact and highly reliable power distribution unit. The circuit breaker is responsible for completing the opening and closing operations in the gas box, and at the same time, it shares the insulation function with the gas box.

[0003] When using existing high-voltage AC vacuum circuit breakers, the gas box generally needs to maintain good overall sealing. However, it is inconvenient to monitor the gas pressure inside the gas box. The gas box needs to be disassembled regularly for inspection, but frequent disassembly causes wear on the seals, further weakening the gas box's sealing performance. At the same time, it is inconvenient to release the gas pressure inside the gas box, which poses certain safety hazards. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-voltage AC vacuum circuit breaker, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage AC vacuum circuit breaker, comprising a housing, a circuit breaker control console, and a three-position isolator control console, wherein the circuit breaker control console is located at the bottom of the three-position isolator control console. A second sealing plate is fixedly connected to one side of the housing by bolts, and both the circuit breaker control console and the three-position isolator control console are fixedly installed on one side of the second sealing plate. Multiple circuit breaker bodies are fixedly installed on one side of the circuit breaker control console and inside the housing, and the tops of the multiple circuit breaker bodies are threadedly connected to three-position isolator bodies. An inflation valve seat is fixedly connected to one side of the housing and at the top position of the second sealing plate. A pressure gauge is movably arranged on one side of the inflation valve seat and is fixedly installed on one side of the housing. A first sealing plate is fixedly connected to the other side of the housing by bolts, and an explosion-proof pressure relief port is fixedly installed on the first sealing plate.

[0006] Furthermore, multiple fixing plates are fixedly connected to the outside of the box, which serve to facilitate the fixing and reinforcement of the box.

[0007] Furthermore, a sealing aluminum plate is fixedly connected to the top of the box body by bolts.

[0008] Furthermore, a plurality of second busbar terminals are fixedly installed at the bottom of the enclosure, and a plurality of first busbar terminals are fixedly installed on both the front and rear sides of the enclosure, and a busbar is provided between the plurality of first busbar terminals and the plurality of second busbar terminals.

[0009] Furthermore, the bottom of the enclosure is fixedly connected to multiple surge arrester plug terminals, and the multiple surge arrester plug terminals are connected to multiple second busbar terminals via busbars.

[0010] It can be seen that the above technical solution provides overvoltage protection for the circuit.

[0011] Furthermore, a support frame is fixedly connected inside the enclosure, a PT is fixedly connected to the support frame, and a PT aviation connector is fixedly installed on the PT, with the PT aviation connectors all located at the bottom of the enclosure.

[0012] As can be seen, the above technical solution allows for real-time monitoring of the bus voltage.

[0013] Furthermore, two support plates are fixedly connected to the bottom of the box, wherein the support plates serve to increase the load-bearing capacity of the bottom of the box.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model achieves operational linkage through the mechanical interlocking structure of the circuit breaker control panel and the three-position isolator control panel. Sulfur hexafluoride is charged into the gas box through the charging valve seat until the pressure gauge shows that the rated pressure has been reached. When it is necessary to inspect the inside of the gas box, the gas recovery device is connected through the charging valve seat, and the first sealing plate is installed on the other side of the box with bolts. Opening the explosion-proof pressure relief port can reduce the pressure inside the box. The structure is simple, convenient for detecting, repairing and maintaining the gas pressure inside the gas box, and has high safety performance.

[0016] 2. This utility model connects to the surge arrester plug-in terminal via the busbar, allowing external surge arresters to be connected to the circuit for overvoltage protection. The PT connector allows the PT to monitor the busbar voltage in real time, providing data support for voltage monitoring and protection of the circuit. It has a simple structure and is easy to use. Attached Figure Description

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a rear view of the overall structure of this utility model;

[0020] Figure 3 This is a bottom view of the overall structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the assembly structure of the circuit breaker control console and the circuit breaker body of this utility model.

[0022] Figure 5 This is a schematic diagram of the main structure of the circuit breaker control console and the three-position isolator of this utility model.

[0023] In the diagram: 1. Enclosure; 2. Circuit breaker control panel; 3. Three-position isolator control panel; 4. Inflation valve seat; 5. Pressure gauge; 6. Sealing aluminum plate; 7. Fixing plate; 8. First busbar terminal; 9. Second busbar terminal; 10. Surge arrester plug-in terminal; 11. First sealing plate; 12. Explosion-proof pressure relief port; 13. PT aviation plug interface; 14. Support plate; 15. Support frame; 16. Busbar; 17. PT; 18. Three-position isolator body; 19. Circuit breaker body; 20. Second sealing plate. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Refer to the instruction manual appendix Figure 1-4This embodiment of a high-voltage AC vacuum circuit breaker includes a housing 1, a circuit breaker control console 2, and a three-position isolator control console 3. The circuit breaker control console 2 is located at the bottom of the three-position isolator control console 3. A second sealing plate 20 is fixedly connected to one side of the housing 1 by bolts. Both the circuit breaker control console 2 and the three-position isolator control console 3 are fixedly installed on one side of the second sealing plate 20. Multiple circuit breaker bodies 19 are fixedly installed on one side of the circuit breaker control console 2 inside the housing 1. The top of each of the multiple circuit breaker bodies 19 is threadedly connected to a three-position isolator body 18. An inflation valve seat 4 is fixedly connected to one side of the housing 1 at the top position of the second sealing plate 20. A pressure gauge 5 is movably arranged on one side of the inflation valve seat 4 and is fixedly installed on one side of the housing 1. A first sealing plate 11 is fixedly connected to the other side of the housing 1 by bolts, and an explosion-proof pressure relief port 12 is fixedly installed on the first sealing plate 11.

[0026] Furthermore, multiple fixing plates 7 are fixedly connected to the outside of the box 1, wherein the fixing plates 7 serve to facilitate the fixing and reinforcement of the box 1.

[0027] Furthermore, a sealing aluminum plate 6 is fixedly connected to the top of the enclosure 1 by bolts. The sealing aluminum plate 6 is disassembled, and then the electronic components are installed inside the enclosure 1.

[0028] Furthermore, multiple second busbar terminals 9 are fixedly installed at the bottom of the enclosure 1, and multiple first busbar terminals 8 are fixedly installed on both the front and rear sides of the enclosure 1. A busbar 16 is provided between the multiple first busbar terminals 8 and the multiple second busbar terminals 9. Multiple surge arrester plug terminals 10 are fixedly connected to the bottom of the enclosure 1, and the multiple surge arrester plug terminals 10 are connected to the multiple second busbar terminals 9 through the busbar 16. A support frame 15 is fixedly connected inside the enclosure 1. A PT17 is fixedly connected to the support frame 15. A PT aviation plug interface 13 is fixedly installed on the PT17, and the PT aviation plug interfaces 13 are all located at the bottom of the enclosure 1. Two support plates 14 are fixedly connected to the bottom of the enclosure 1. The support plates 14 serve to increase the load-bearing capacity of the bottom of the enclosure 1.

[0029] The busbar 16 is connected to the first busbar terminal 8 and the second busbar terminal 9 respectively, and the surge arrester plug terminal 10 is connected through the busbar 16. The external surge arrester can be connected to the circuit to realize the overvoltage protection of the circuit. The PT connector 13 and PT17 enable PT17 to monitor the voltage of the busbar 16 in real time, providing data support for voltage monitoring and protection of the circuit. The structure is simple and easy to use.

[0030] The usage method of this embodiment is as follows:

[0031] In use, the three-position isolator body 18 is installed on the circuit breaker body 19, and then the second sealing plate 20 is installed on one side of the housing 1 by bolts, thereby fixing the circuit breaker control console 2 and the three-position isolator control console 3 to the housing 1. The operation is linked by the mechanical interlocking structure of the circuit breaker control console 2 and the three-position isolator control console 3. Sulfur hexafluoride is filled into the gas box through the gas filling valve seat 4 until the pressure gauge 5 shows that the rated pressure has been reached. When it is necessary to inspect the inside of the gas box, the gas recovery device is connected through the gas filling valve seat 4, and the first sealing plate 11 is installed on the other side of the housing 1 by bolts. The explosion-proof pressure relief port 12 is opened to reduce the pressure inside the housing 1. The structure is simple, convenient for detecting the gas pressure inside the gas box, and has high safety performance.

[0032] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-voltage alternating-current vacuum circuit breaker comprising a box (1), a circuit breaker control console (2) and a three-position disconnector control console (3), and the circuit breaker control console (2) is located at the bottom of the three-position disconnector control console (3), characterized in that: A second sealing plate (20) is fixedly connected to one side of the enclosure (1) by bolts, and the circuit breaker control console (2) and the three-position isolator control console (3) are both fixedly installed on one side of the second sealing plate (20). Multiple circuit breaker bodies (19) are fixedly installed on one side of the circuit breaker control console (2) and inside the enclosure (1). The top of the multiple circuit breaker bodies (19) is threadedly connected to the three-position isolator bodies (18). An inflation valve seat (4) is fixedly connected to one side of the enclosure (1) and at the top position of the second sealing plate (20). A pressure gauge (5) is movably installed on one side of the inflation valve seat (4), and the pressure gauge (5) is fixedly installed on one side of the enclosure (1). A first sealing plate (11) is fixedly connected to the other side of the enclosure (1) by bolts, and an explosion-proof pressure relief port (12) is fixedly installed on the first sealing plate (11).

2. The high voltage AC vacuum circuit breaker according to claim 1, characterized in that: Multiple fixing plates (7) are fixedly connected to the outside of the box (1), wherein the fixing plates (7) serve to facilitate the fixing and reinforcement of the box (1).

3. The high voltage AC vacuum circuit breaker according to claim 1, characterized in that: The top of the box (1) is fixedly connected to a sealing aluminum plate (6) by bolts.

4. The high voltage AC vacuum circuit breaker according to claim 1, characterized in that: Multiple second busbar terminals (9) are fixedly installed at the bottom of the enclosure (1), and multiple first busbar terminals (8) are fixedly installed on both the front and rear sides of the enclosure (1), and a busbar (16) is provided between the multiple first busbar terminals (8) and the multiple second busbar terminals (9).

5. The high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The bottom of the enclosure (1) is fixedly connected to multiple surge arrester plug terminals (10), and the multiple surge arrester plug terminals (10) are connected to multiple second bus terminals (9) through bus (16).

6. The high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The housing (1) is fixedly connected to a support frame (15), and a PT (17) is fixedly connected to the support frame (15). A PT aviation connector (13) is fixedly installed on the PT (17), and the PT aviation connector (13) is located at the bottom of the housing (1).

7. The high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The bottom of the box (1) is fixedly connected to two support plates (14), wherein the support plates (14) serve to increase the load-bearing capacity of the bottom of the box (1).

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