Modular air insulated switchgear circuit breaker

Abstract

The utility model discloses a modularization air -filled cabinet circuit breaker, including circuit breaker still includes air -filled cabinet body, the inside of air -filled cabinet body is installed to circuit breaker, the both sides inner wall of air -filled cabinet body all symmetry has the support frame, and the extruded plate of circuit breaker both sides protruding is slipped between the both sides of air -filled cabinet body two support frames, and the both sides of circuit breaker can be supported and the spacing by two support frames, and can control drive circuit breaker and move along the area between two support frames, can be close to the front cabinet of air -filled cabinet body on the end of circuit breaker, realize the alignment installation of circuit breaker and air -filled cabinet body, make subsequent use bolt circuit breaker and air -filled cabinet body assemble conveniently, after fixing circuit breaker, control drive extruded plate extrude the both sides inner wall of air -filled cabinet body, can control drive circuit breaker indirectly connected with extruded plate and relatively fixed setting in the inside of air -filled cabinet body, improve the stability of circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically a modular gas-insulated switchgear circuit breaker. Background Technology

[0002] Circuit breakers are important switching devices in power systems. During normal operation, circuit breakers can connect and disconnect the load current of electrical equipment, and can reliably disconnect short-circuit current when a system fault occurs. They are widely used in gas-insulated switchgear and control cabinets such as distribution cabinets. Existing modular circuit breakers consist of multiple independent modules, such as operation modules, control modules, and protection modules. Each module is connected through standardized interfaces, which facilitates disassembly, replacement, or upgrading.

[0003] When installing existing gas-insulated switchgear circuit breakers inside the gas-insulated switchgear, the bolt holes at the end of the circuit breaker are generally aligned with the bolts on the front of the switchgear to ensure proper installation. However, due to the small size of the bolts, precise positioning is required, making the installation process quite cumbersome. Furthermore, since the circuit breaker is typically installed by using bolts to fix one end of the circuit breaker to the front of the switchgear, the installation stability of the middle and rear of the circuit breaker is poor. Utility Model Content

[0004] The purpose of this invention is to provide a modular gas-insulated switchgear circuit breaker to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular gas-insulated switchgear circuit breaker, including a circuit breaker and a gas-insulated switchgear cabinet. The circuit breaker is installed inside the gas-insulated switchgear cabinet. Support frames are symmetrically welded to the inner walls of both sides of the gas-insulated switchgear cabinet. Extrusion plates are symmetrically slidably installed on both sides of the circuit breaker. The extrusion plate on one side is slidably installed between the two support frames on the same side. The side of the extrusion plate away from the circuit breaker is pressed against the inner wall of the gas-insulated switchgear cabinet.

[0006] As a further preferred embodiment of this technical solution, the circuit breaker is provided with symmetrical sliding holes on both sides, and sliding rods are fixedly installed on both sides of the extrusion plate at the positions corresponding to the sliding holes. The sliding rods are slidably connected to the sliding holes. Moving rods are slidably installed on both sides of the circuit breaker. A transmission rod is rotatably installed at the end of the moving rod through a shaft pin. The end of the transmission rod away from the moving rod is rotatably connected to the middle of one side of the extrusion plate through a shaft pin.

[0007] As a further preferred embodiment of this technical solution, guide frames are fixedly installed on both sides of the circuit breaker by bolts, and the moving rod is slidably installed inside the guide frames.

[0008] As a further preferred embodiment of this technical solution, the end of the moving rod away from the transmission rod is provided with first bolt holes at equal intervals, and the two sides of one end of the extrusion plate are provided with second bolt holes. A fixing bolt is installed between the second bolt hole and the first bolt hole, and the fixing bolt passes through the second bolt hole and the first bolt hole.

[0009] As a further preferred embodiment of this technical solution, a connecting plate is welded between the ends of the two moving rods near the first bolt hole. A screw is rotatably mounted on one side of the circuit breaker at the height position corresponding to the connecting plate via a bearing. The screw passes through the connecting plate and is threadedly connected to the middle of the connecting plate. A knob is fixedly mounted on the end of the screw away from the circuit breaker.

[0010] As a further preferred embodiment of this technical solution, a rubber pad is fixedly installed on the outer side of the extrusion plate with adhesive.

[0011] As a further preferred embodiment of this technical solution, the two corners of one end of the extrusion plate are provided with bevels.

[0012] This utility model provides a modular gas-insulated switchgear circuit breaker, which has the following advantages:

[0013] (1) This utility model slides the protruding extrusion plates on both sides of the circuit breaker into the two support frames on both sides of the gas-insulated cabinet. The two support frames can support and limit the two sides of the circuit breaker, and can control the movement of the circuit breaker along the area between the two support frames. The end of the circuit breaker can be close to the front of the gas-insulated cabinet, so as to realize the alignment and installation of the circuit breaker and the gas-insulated cabinet. This makes it convenient to use bolts to assemble the circuit breaker and the gas-insulated cabinet later.

[0014] (2) This utility model drives the screw to rotate by turning the knob. The screw and the connecting plate are connected by a thread, which drives the moving rod connected to the connecting plate to slide inside the guide frame. The connection between the moving rod and the extrusion plate by the transmission rod can drive the two extrusion plates to move in opposite directions. The sliding rod will slide inside the sliding hole, so that the extrusion plate can extrude the inner walls of both sides of the gas-filled cabinet. Then, the fixing bolt is passed through the second bolt hole and the corresponding first bolt hole. The position of the moving rod and the circuit breaker is fixed and assembled by the fixing bolt. At this time, the circuit breaker, which is indirectly connected to the extrusion plate, is relatively fixed inside the gas-filled cabinet, which improves the stability of the circuit breaker. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of a partial explosion structure of the present invention;

[0017] Figure 3This is a partial structural schematic diagram of the present invention;

[0018] In the diagram: 1. Circuit breaker; 2. Gas-filled switchgear cabinet; 3. Support frame; 4. Extrusion plate; 5. Sliding hole; 6. Sliding rod; 7. Moving rod; 8. Transmission rod; 9. Guide frame; 10. First bolt hole; 11. Second bolt hole; 12. Fixing bolt; 13. Connecting plate; 14. Screw; 15. Knob; 16. Rubber pad; 17. Angled. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This utility model provides a technical solution: such as Figures 1 to 3 As shown, in this embodiment, a modular gas-insulated switchgear circuit breaker includes a circuit breaker 1 and a gas-insulated switchgear cabinet 2. The circuit breaker 1 is installed inside the gas-insulated switchgear cabinet 2. Support frames 3 are symmetrically welded to the inner walls of both sides of the gas-insulated switchgear cabinet 2. Extrusion plates 4 are symmetrically slidably installed on both sides of the circuit breaker 1. One side of the extrusion plate 4 is slidably installed between the two support frames 3 on the same side. The side of the extrusion plate 4 away from the circuit breaker 1 is pressed against the inner wall of the gas-insulated switchgear cabinet 2, causing the protruding extrusion plates 4 on both sides of the circuit breaker 1 to slide into the space between the two support frames 3 on both sides of the gas-insulated switchgear cabinet 2. The support frame 3 can support and limit the two sides of the circuit breaker 1, and can control the movement of the circuit breaker 1 along the area between the two support frames 3. The end of the circuit breaker 1 can be close to the front cabinet of the gas-insulated switchgear 2, realizing the alignment and installation of the circuit breaker 1 and the gas-insulated switchgear 2. This facilitates the subsequent assembly of the circuit breaker 1 and the gas-insulated switchgear 2 with bolts. After the circuit breaker 1 is fixed, the extrusion plate 4 is controlled to press the inner walls of both sides of the gas-insulated switchgear 2. The circuit breaker 1, which is indirectly connected to the extrusion plate 4, can be controlled to be relatively fixed inside the gas-insulated switchgear 2, improving the stability of the circuit breaker 1.

[0021] like Figures 1 to 3 As shown, the circuit breaker 1 has symmetrical sliding holes 5 on both sides. The two sides of the extrusion plate 4 are fixedly installed with sliding rods 6 corresponding to the sliding holes 5. The sliding rods 6 are slidably connected to the sliding holes 5. The two sides of the circuit breaker 1 are slidably installed with moving rods 7. The end of the moving rod 7 is rotatably installed with a transmission rod 8 through a shaft pin. The end of the transmission rod 8 away from the moving rod 7 is rotatably connected to the middle of one side of the extrusion plate 4 through a shaft pin. The two sides of the circuit breaker 1 are fixedly installed with guide frames 9 by bolts. The moving rods 7 are slidably installed inside the guide frames 9.

[0022] The moving rod 7 slides inside the guide frame 9. The connection between the moving rod 7 and the extrusion plate 4 via the transmission rod 8 can drive the two extrusion plates 4 to move in opposite directions. The sliding rod 6 will slide inside the sliding hole 5, so that the extrusion plate 4 can extrude the inner walls of both sides of the gas cabinet 2.

[0023] like Figures 1 to 3 As shown, the moving rod 7 has a first bolt hole 10 at an equal distance from the end away from the transmission rod 8, and the extrusion plate 4 has a second bolt hole 11 on both sides of one end. A fixing bolt 12 is installed between the second bolt hole 11 and the first bolt hole 10. The fixing bolt 12 passes through the second bolt hole 11 and the first bolt hole 10.

[0024] After the control extrusion plate 4 extrudes the inner walls of both sides of the gas-filled cabinet 2, the fixing bolts 12 are passed through the second bolt hole 11 and the corresponding first bolt hole 10. The positions of the moving rod 7 and the circuit breaker 1 are fixed and assembled by the fixing bolts 12, which is used to fix the position of the extrusion plate 4.

[0025] like Figures 1 to 3 As shown, a connecting plate 13 is welded between the two moving rods 7 near the first bolt hole 10. A screw 14 is rotatably installed on one side of the circuit breaker 1 at the height position corresponding to the connecting plate 13 via a bearing. The screw 14 passes through the connecting plate 13 and is threadedly connected to the middle of the connecting plate 13. A knob 15 is fixedly installed on the end of the screw 14 away from the circuit breaker 1.

[0026] Rotating the knob 15 will drive the screw 14 to rotate. The screw 14 and the connecting plate 13 are connected by a thread, which can drive the two moving rods 7 connected to the connecting plate 13 to slide simultaneously inside the guide frame 9, so as to move the two extrusion plates 4 at the same time.

[0027] like Figures 1 to 3 As shown, a rubber pad 16 is fixedly installed on the outer side of the extrusion plate 4 by adhesive.

[0028] When the extrusion plate 4 presses the inner walls of both sides of the gas cabinet 2, the rubber pad 16 can increase the friction between the extrusion plate 4 and the inner wall of the gas cabinet 2, thereby improving the stability of the extrusion plate 4 pressing the inner wall of the gas cabinet 2.

[0029] like Figures 1 to 3 As shown, the two corners of one end of the extrusion plate 4 are provided with bevels 17. The design of bevels 17 makes it easy for the extrusion plate 4 to slide between the two support frames 3.

[0030] This utility model provides a modular gas-insulated switchgear circuit breaker, the specific working principle of which is as follows:

[0031] When the device is in use, the protruding extrusion plates 4 on both sides of the circuit breaker 1 are slid into the space between the two support frames 3 on both sides of the gas-insulated cabinet 2. The two support frames 3 can support and limit the two sides of the circuit breaker 1, and can control the movement of the circuit breaker 1 along the area between the two support frames 3. The end of the circuit breaker 1 can be close to the front of the gas-insulated cabinet 2, so as to realize the alignment and installation of the circuit breaker 1 and the gas-insulated cabinet 2, which is convenient for subsequent assembly of the circuit breaker 1 and the gas-insulated cabinet 2 with bolts.

[0032] After the circuit breaker 1 is fixed, the screw 14 is rotated by turning the knob 15. The screw 14 is connected to the connecting plate 13 by a thread, which causes the moving rod 7 connected to the connecting plate 13 to slide inside the guide frame 9. The connection between the moving rod 7 and the extrusion plate 4 by the transmission rod 8 can drive the two extrusion plates 4 to move in opposite directions. The slide rod 6 will slide inside the slide hole 5, so that the extrusion plates 4 can extrude the inner walls of both sides of the gas-filled cabinet 2. Then, the fixing bolt 12 is used to pass through the second bolt hole 11 and the corresponding first bolt hole 10. The position of the moving rod 7 and the circuit breaker 1 is fixed by the fixing bolt 12. At this time, the circuit breaker 1, which is indirectly connected to the extrusion plate 4, is relatively fixed inside the gas-filled cabinet 2, which improves the stability of the circuit breaker 1.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular gas-insulated switchgear circuit breaker, comprising a circuit breaker (1) and a gas-insulated switchgear cabinet (2), wherein the circuit breaker (1) is installed inside the gas-insulated switchgear cabinet (2), characterized in that: The inner walls of both sides of the gas-filled cabinet (2) are symmetrically welded with support frames (3), and the two sides of the circuit breaker (1) are symmetrically slidably installed with extrusion plates (4). The extrusion plate (4) on one side is slidably installed between the two support frames (3) on the same side, and the side of the extrusion plate (4) away from the circuit breaker (1) is extruded against the inner wall of the gas-filled cabinet (2).

2. The modular gas-insulated switchgear circuit breaker according to claim 1, characterized in that: The circuit breaker (1) has symmetrical sliding holes (5) on both sides. The two sides of the extrusion plate (4) are fixedly installed with sliding rods (6) corresponding to the sliding holes (5). The sliding rods (6) are slidably connected to the sliding holes (5). The two sides of the circuit breaker (1) are slidably installed with moving rods (7). The end of the moving rod (7) is rotatably installed with a transmission rod (8) through a shaft pin. The end of the transmission rod (8) away from the moving rod (7) is rotatably connected to the middle of one side of the extrusion plate (4) through a shaft pin.

3. A modular gas-insulated switchgear circuit breaker according to claim 2, characterized in that: The circuit breaker (1) has guide frames (9) fixedly installed on both sides by bolts, and the moving rod (7) is slidably installed inside the guide frame (9).

4. A modular gas-insulated switchgear circuit breaker according to claim 3, characterized in that: The moving rod (7) has a first bolt hole (10) at an equal distance from the end of the transmission rod (8). The extrusion plate (4) has a second bolt hole (11) on both sides of one end. A fixing bolt (12) is installed between the second bolt hole (11) and the first bolt hole (10). The fixing bolt (12) passes through the second bolt hole (11) and the first bolt hole (10).

5. A modular gas-insulated switchgear circuit breaker according to claim 4, characterized in that: A connecting plate (13) is welded between the two moving rods (7) near the first bolt hole (10). A screw (14) is rotatably installed on one side of the circuit breaker (1) at the height position corresponding to the connecting plate (13) via a bearing. The screw (14) passes through the connecting plate (13) and is threadedly connected to the middle of the connecting plate (13). A knob (15) is fixedly installed on the end of the screw (14) away from the circuit breaker (1).

6. A modular gas-insulated switchgear circuit breaker according to claim 4, characterized in that: A rubber pad (16) is fixedly installed on the outer side of the extrusion plate (4) by glue.

7. A modular air insulated switchgear circuit breaker according to claim 6, characterized in that: The extrusion plate (4) has beveled corners (17) at one end of its two corners.

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