Novel cabinet structure of circuit breaker

Abstract

The utility model relates to the field of circuit breakers, in particular to a novel cabinet structure of a circuit breaker, which comprises a cabinet body, a first isolating switch, a support plate, a fixed plate, a butt joint rod, a connecting plate, a fixed bedplate, the circuit breaker and a second isolating switch, a second isolating switch is arranged below the first isolating switch; according to the utility model, by adopting the circuit breaker controlled by the two groups of disconnecting switches, when the circuit breaker is switched on or switched off, double isolation can be provided, when the bus coupler cabinet circuit breaker needs to be overhauled, a section of bus needs to be disconnected, the requirement that the section of bus and a section of bus have obvious disconnection points is met, and the two groups of disconnecting switches can be independently controlled, so that the operation is simple and convenient. The circuit breaker is allowed to be operated more finely, different operation requirements are met, the accident range is prevented from being expanded, and operation and use under different conditions are achieved.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, in particular to a novel cabinet structure of a circuit breaker. Background Art

[0002] The circuit breaker cabinet is an important component of indoor metal-enclosed switchgear. When the system is operating normally, it can cut off and connect the no-load and load currents of the lines and various electrical equipment. When a system fault occurs, it cooperates with the relay protection to quickly cut off the fault current to prevent the scope of the accident from expanding. According to safety regulations, if the circuit breaker is shut down for maintenance, it needs to be used with an isolating switch because the isolating switch can provide a clear disconnection point. Usually, the isolating switch of the incoming line cabinet is placed at the bottom, and the isolating switch of the outgoing line cabinet is placed at the top, so that there is a clear disconnection point with the power supply point.

[0003] Due to structural limitations, existing circuit breaker cabinets can only be equipped with an isolating switch at one end to provide a clear disconnection point. When the busbar circuit breaker in the busbar tie cabinet needs to be repaired, a section of the busbar needs to be disconnected, which makes it difficult to meet the requirement of having a clear disconnection point for both the first and second busbar sections.

[0004] Therefore, for the above-mentioned existing circuit breaker cabinet, usually due to structural limitations, only one isolating switch can be set at one end to provide a clear disconnection point. When the busbar circuit breaker of the busbar cabinet needs to be repaired, it is necessary to disconnect a section of the busbar, which is difficult to meet the requirement of having a clear disconnection point for both the first and second busbars. A new circuit breaker cabinet structure can be designed to provide double isolation and meet the requirement of having a clear disconnection point for both the first and second busbars, so as to prevent the scope of the accident from expanding and realize operations for different situations. Utility Model Content

[0005] To overcome the problem.

[0006] The technical solution of the utility model is: a new cabinet structure of a circuit breaker, including a cabinet body, a first isolating switch, a support plate, a fixing plate, a docking rod, a connecting plate, a fixing platform, a circuit breaker, and a second isolating switch. The first isolating switch for isolating the power supply for switching operation and connection is installed inside the cabinet body, and the second isolating switch is provided below the first isolating switch.

[0007] Preferably, by adopting a circuit breaker controlled by two sets of isolating switches, double isolation can be provided when the circuit breaker is closed or opened. When the circuit breaker of the main coupling cabinet needs to be repaired, it is necessary to disconnect a section of the busbar, which meets the requirement that both the first section of the busbar and the second section of the busbar have obvious disconnection points. The two sets of isolating switches can be controlled independently, allowing more precise operation of the circuit breaker to adapt to different operating requirements to prevent the expansion of the scope of the accident and realize operation for different situations. The first isolating switch is fixed with a support plate to provide a stable support for the isolating switch, reduce displacement or damage caused by vibration or other external factors, and enhance the stability of the switch in the cabinet structure.

[0008] Preferably, a support plate is provided at the outer end of the first isolating switch, and the first isolating switch is fixedly connected to the cabinet body through the support plate. By fixing the first isolating switch with the support plate, a stable support is provided for the isolating switch, reducing displacement or damage caused by vibration or other external forces, and enhancing the stability of the switch in the cabinet structure.

[0009] Preferably, a fixing plate is provided at the lower end of the first isolating switch, and a plurality of sets of limiting bolts are provided at the outer end of the fixing plate. The fixing plate is fixedly connected to the support plate by the plurality of limit bolts. By using the fixing plate in combination with the limit bolts to assist in fixing the first isolating switch, additional support and limitation are provided, making the installation and disassembly of the isolating switch more convenient and quick, and also providing convenience for subsequent maintenance and inspection work.

[0010] Preferably, a docking rod is provided at the lower end of the first isolating switch, a connecting plate is provided at the bottom of the docking rod, and multiple sets of fixing buckles are provided below the connecting plate. The connecting plate is fixedly connected to the docking rod through the fixing buckles. By adopting multiple sets of fixing buckles in combination with the connection between the connecting plate and the first isolating switch and the circuit breaker, it is ensured that the first isolating switch and the circuit breaker are connected in the correct position, stable transmission between the two groups is achieved, misoperation is avoided, and the occurrence of safety accidents is reduced.

[0011] Preferably, a circuit breaker is provided inside the cabinet, and the circuit breaker is fixedly connected to the first disconnector through a connecting plate. A fixed platform is provided at the lower end of the circuit breaker, and the circuit breaker is fixedly connected to the cabinet through the fixed platform. By using the fixed platform to support the circuit breaker, a stable support platform is provided to ensure that the circuit breaker maintains a fixed position during installation, reduce installation errors, prevent the circuit breaker from accidentally falling off due to loosening during use, and improve the safety of personnel operation.

[0012] Preferably, a fixing frame is provided at the outer end of the second isolating switch, and a terminal block is provided at the upper end of the second isolating switch. The second isolating switch is connected to the circuit breaker through the terminal block. By connecting the second isolating switch to the circuit breaker using the terminal block, the internal structure of the switch cabinet is optimized, which is convenient for subsequent maintenance and use.

[0013] Preferably, the outer wall of the cabinet is provided with multiple sets of docking holes, which extend through the cabinet to the interior. By using multiple sets of docking holes to connect cables, the removal and replacement of cables becomes more convenient and quick, ensuring the stable operation of the equipment.

[0014] Beneficial effects of the utility model:

[0015] 1. Compared with traditional circuit breakers, the circuit breaker controlled by two sets of disconnectors can provide double isolation when the circuit breaker is closed or opened. When the busbar is to be repaired, it is necessary to disconnect one section of the busbar, which meets the requirement of having obvious disconnection points for both the first and second sections of the busbar. In addition, the two sets of disconnectors can be controlled independently, allowing for more precise operation of the circuit breaker to adapt to different operating requirements, prevent the scope of the accident from being expanded, and realize operation and use in different situations. The support plate is used to fix the first disconnector, which provides a stable support for the disconnector, reduces displacement or damage caused by vibration or other external factors, and enhances the stability of the switch in the cabinet structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 What is shown is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 Shown is a schematic diagram of the internal structure of the cabinet of the present utility model;

[0018] Figure 3 Shown is a schematic diagram of the structure of the first isolating switch of the present utility model;

[0019] Figure 4 What is shown is a schematic diagram of the overall rear end structure of the present utility model.

[0020] Explanation of the accompanying reference numerals: 1. Cabinet; 2. First isolating switch; 3. Support plate; 4. Fixing plate; 5. Limit bolt; 6. Docking rod; 7. Connecting plate; 8. Fixing buckle; 9. Circuit breaker; 10. Fixing platform; 11. Fixing frame; 12. Second isolating switch; 13. Terminal block; 14. Docking hole. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4 The utility model provides an embodiment: a new circuit breaker cabinet structure, including a cabinet body 1, a first isolating switch 2, a support plate 3, a fixing plate 4, a docking rod 6, a connecting plate 7, a fixing platform 10, a circuit breaker 9, and a second isolating switch 12. The first isolating switch 2 for isolating the power supply for switching operation and connection is installed inside the cabinet body 1, and the second isolating switch 12 is provided below the first isolating switch 2.

[0023] See also Figure 1-Figure 2 In this embodiment, a support plate 3 is provided at the outer end of the first isolating switch 2, and the first isolating switch 2 is fixedly connected to the cabinet 1 through the support plate 3. By using the support plate 3 to fix the first isolating switch 2, a stable support is provided for the isolating switch, and displacement or damage caused by vibration or other external force factors is reduced, and the stability of the switch in the cabinet structure is enhanced. A fixing plate 4 is provided at the lower end of the first isolating switch 2, and a plurality of groups of limit bolts 5 are provided at the outer end of the fixing plate 4. The fixing plate 4 is fixedly connected to the support plate 3 through the plurality of limit bolts 5. The fixing plate 4 is combined with the limit bolts 5 to assist in fixing the first isolating switch 2, providing additional support and limit, making the installation and disassembly of the isolating switch more convenient and quick, and also providing convenience for subsequent maintenance and repair work.

[0024] See also Figure 1-Figure 3 In this embodiment, a docking rod 6 is provided at the lower end of the first disconnector 2, and a connecting plate 7 is provided at the bottom of the docking rod 6. A plurality of fixing buckles 8 are provided below the connecting plate 7. The connecting plate 7 is fixedly connected to the docking rod 6 through the fixing buckles 8. By adopting a plurality of fixing buckles 8 in combination with the connecting plate 7 and the connection between the first disconnector 2 and the circuit breaker 9, it is ensured that the first disconnector 2 and the circuit breaker 9 are connected in the correct position, stable transmission between the two groups is achieved, misoperation is avoided, and the occurrence of safety accidents is reduced. A circuit breaker 9 is provided inside the cabinet 1, and the circuit breaker 9 is fixedly connected to the first disconnector 2 through the connecting plate 7. A fixed platform 10 is provided at the lower end of the circuit breaker 9, and the circuit breaker 9 is fixedly connected to the cabinet 1 through the fixed platform 10. The circuit breaker 9 is supported by the fixed platform 10 to provide a stable support platform, ensuring that the circuit breaker 9 maintains a fixed position during installation, reducing installation errors, preventing the circuit breaker 9 from accidentally falling off due to loosening during use, and improving the safety of personnel operation.

[0025] See also Figure 2-Figure 4 In this embodiment, a fixing frame 11 is provided at the outer end of the second isolating switch 12, and a terminal block 13 is provided at the upper end of the second isolating switch 12. The second isolating switch 12 is connected to the circuit breaker 9 through the terminal block 13. By adopting the terminal block 13 to connect the second isolating switch 12 and the circuit breaker 9, the internal structure of the switch cabinet is optimized, which is convenient for subsequent maintenance and use. The outer wall of the cabinet body 1 is provided with multiple groups of docking holes 14, and the docking holes 14 extend through the cabinet body 1 to the interior. By adopting multiple groups of docking holes 14 to connect cables, the removal and replacement of cables becomes more convenient and quick, thereby ensuring the stable operation of the equipment.

[0026] When working, first, use the support plate 3 to connect the fixing plate 4 to install the first disconnector 2 to the specified position inside the cabinet 1. Secondly, use the limit bolt 5 to fix the connecting plate 7 and the docking rod 6 so that it is docked with the circuit breaker 9. At the same time, use the terminal board 13 to connect the second disconnector 12 to the circuit breaker 9. The circuit breaker 9 controlled by two groups of disconnectors can provide double isolation when the circuit breaker 9 is closed or opened. When the main coupling cabinet circuit breaker 9 needs to be repaired, it is necessary to disconnect a section of the busbar to meet the requirement that both the first and second sections of the busbar have obvious disconnection points, and the two groups of disconnectors can be controlled independently, allowing more precise operation of the circuit breaker 9 to adapt to different operating requirements, so as to prevent the expansion of the scope of the accident and realize operation and use in different situations.

[0027] Through the above steps, by adopting the circuit breaker 9 controlled by two sets of isolating switches, double isolation can be provided when the circuit breaker 9 is closed or opened. The two sets of isolating switches can be controlled independently, allowing more precise operation of the circuit breaker 9 to adapt to different operating requirements. The support plate 3 is used to fix the first isolating switch 2, which provides a stable support for the isolating switch and reduces displacement or damage caused by vibration or other external factors.

Claims

1. A novel circuit breaker cabinet structure, comprising a cabinet body (1); characterized in that: The cabinet (1) further comprises a first isolating switch (2), a supporting plate (3), a fixing plate (4), a docking rod (6), a connecting plate (7), a fixing platform (10), a circuit breaker (9), and a second isolating switch (12). The cabinet (1) is provided with a first isolating switch (2) for isolating the power supply for switching operation and connection, and a second isolating switch (12) is provided below the first isolating switch (2).

2. The novel circuit breaker cabinet structure according to claim 1 is characterized in that: A support plate (3) is provided at the outer end of the first isolating switch (2), and the first isolating switch (2) is fixedly connected to the cabinet (1) via the support plate (3).

3. The novel circuit breaker cabinet structure according to claim 2 is characterized in that: A fixing plate (4) is provided at the lower end of the first isolating switch (2), a plurality of groups of limiting bolts (5) are provided at the outer end of the fixing plate (4), and the fixing plate (4) is fixedly connected to the supporting plate (3) via the plurality of groups of limiting bolts (5).

4. The novel circuit breaker cabinet structure according to claim 3 is characterized in that: A docking rod (6) is provided at the lower end of the first isolating switch (2), a connecting plate (7) is provided at the bottom of the docking rod (6), a plurality of fixing buckles (8) are provided below the connecting plate (7), and the connecting plate (7) is fixedly connected to the docking rod (6) via the fixing buckles (8).

5. The novel circuit breaker cabinet structure according to claim 1 is characterized in that: A circuit breaker (9) is provided inside the cabinet (1), and the circuit breaker (9) is fixedly connected to the first isolating switch (2) via a connecting plate (7). A fixed platform (10) is provided at the lower end of the circuit breaker (9), and the circuit breaker (9) is fixedly connected to the cabinet (1) via the fixed platform (10).

6. The novel circuit breaker cabinet structure according to claim 2 is characterized in that: The outer end of the second isolating switch (12) is provided with a fixing frame (11), the upper end of the second isolating switch (12) is provided with a wiring board (13), and the second isolating switch (12) is connected to the circuit breaker (9) through the wiring board (13).

7. The novel circuit breaker cabinet structure according to claim 1 is characterized in that: The outer wall of the cabinet body (1) is provided with a plurality of docking holes (14), and the docking holes (14) penetrate the cabinet body (1) and extend to the interior.

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