Permanent magnet vacuum circuit breaker

Abstract

The utility model discloses a permanent magnet vacuum circuit breaker, which comprises a circuit breaker main body, the circuit breaker main body comprises a fixed machine box, a dustproof panel, a control frame and a power switch, the fixed machine box, the dustproof panel and the control frame are in detachable structures, the front end of the control frame is provided with a clamping part, and the clamping part is connected with the power switch. The control frame is fixed to the fixing machine box through a clamping part, an operating mechanism is embedded in the fixing machine box, and a positioning machine cover is detachably installed on the surface of the upper end of the operating mechanism. According to the permanent magnet vacuum circuit breaker, all the components in the permanent magnet vacuum circuit breaker are positioned, disassembled and assembled, so that all the modules are accurately and stably aligned, the operating mechanism can be safely and stably embedded and installed in the circuit breaker box body, the operation safety and stability of the operating mechanism are effectively guaranteed, the dustproof panel has a good dustproof protection effect, and the service life of the operating mechanism is prolonged. Meanwhile, the control frame which is convenient to assemble and fix is mounted, so that the power circuits can be conveniently and orderly arranged through the control frame, and the winding and disorder phenomena are avoided.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breaker technology, specifically a permanent magnet vacuum circuit breaker. Background Technology

[0002] The permanent magnet vacuum circuit breaker mainly consists of three parts: the vacuum circuit breaker body, the controller, and the external voltage transformer. The three parts are electrically connected through aviation sockets and outdoor sealed cables. It has fault detection, protection control, and communication functions. It can reliably judge and detect the milliampere-level zero-sequence current and phase-to-phase short-circuit fault current on the incoming and outgoing sides of the switch, and realize the automatic clearing of single-phase grounding faults and phase-to-phase short-circuit faults.

[0003] Chinese patent document CN203882867U discloses a permanent magnet vacuum circuit breaker, including a circuit breaker body and a controller. The controller includes a permanent magnet mechanism and a manual closing mechanism. The key technical point is that the manual closing mechanism is formed by combining a one-way gear and a lever mechanism, which makes up for the defect that the permanent magnet vacuum mechanism cannot be manually closed. It has the characteristics of fast opening and closing speed and high safety performance. This product can also be operated to open and close without power, which solves the inconvenience of manual operation when there is no power. Previously, permanent magnet vacuum circuit breakers required generator charging for operation when closing on outdoor branch lines. Transporting the generator equipment in remote mountainous areas was difficult and increased the workload of relevant personnel.

[0004] The existing technology mentioned above cannot accurately align and fix the internal operating mechanism of the circuit breaker, which makes the operating mechanism prone to positional deviation and affects the safe and stable operation of the circuit breaker. Therefore, it is necessary to develop a new type of permanent magnet vacuum circuit breaker. Utility Model Content

[0005] The purpose of this utility model is to provide a permanent magnet vacuum circuit breaker to solve the problem mentioned in the background art that the existing technology cannot accurately align and fix the internal operating mechanism of the circuit breaker, which leads to the operating mechanism being prone to positional deviation and affecting the safe and stable operation of the circuit breaker.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a permanent magnet vacuum circuit breaker, comprising a circuit breaker body, the circuit breaker body including a fixed housing, a dustproof panel, a control frame and a power switch, wherein the fixed housing, the dustproof panel and the control frame are all detachable structures, the front end of the control frame is equipped with a locking part, the control frame is locked to the fixed housing through the locking part, an operating mechanism is embedded inside the fixed housing, and a positioning cover is detachably installed on the upper surface of the operating mechanism.

[0007] Preferably, the upper surface of the positioning cover is provided with a snap-fit ​​structure, and the positioning cover is snapped and fixed to the dustproof panel through the snap-fit ​​structure. The dustproof panel is provided with a groove structure inside, and the power switch is installed and fixed inside the groove structure.

[0008] Preferably, the upper surface of the control frame is provided with a heat dissipation groove, the interior of the engaging part is provided with a wire-passing groove, and the front surface of the engaging part is provided with a slot structure.

[0009] Preferably, an insulating support plate is installed at the bottom of the control frame, the surface of the insulating support plate is provided with positioning holes, and the front end surface of the insulating support plate is provided with a square slot.

[0010] Preferably, the fixed housing is provided with a positioning pin inside, and the operating mechanism is provided with a positioning slot inside, and the positioning pin is inserted into the positioning slot for fixation.

[0011] Preferably, the fixed housing is provided with a limiting plate inside, and the limiting plate is engaged and fixed with the operating mechanism.

[0012] Preferably, the front end of the fixed housing is provided with a lead wire hole, the lead wire hole, the positioning hole and the wire through slot are located on the same vertical line, and a positioning guide post is installed inside the fixed housing. The fixed housing is fixed to the control frame by the positioning guide post.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model employs a positioning and disassembly design for the internal components of the permanent magnet vacuum circuit breaker, ensuring precise and stable alignment between modules. This allows the operating mechanism to be safely and stably fitted into the circuit breaker housing, effectively guaranteeing the operational safety and stability of the operating mechanism. The dustproof panel provides excellent dust protection, and a convenient assembly and fixing control frame allows for easy and orderly arrangement of power lines, preventing tangling and mess. 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 side view of the present invention.

[0017] Figure 3 This is a schematic diagram of the exploded decomposition structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the control frame structure of this utility model;

[0019] Figure 5This is a schematic diagram of the internal installation structure of the fixed housing of this utility model.

[0020] In the diagram: 1. Fixed housing; 2. Control frame; 3. Dustproof panel; 4. Power switch; 5. Wiring slot; 6. Engaging part; 7. Slot structure; 8. Insulating support plate; 9. Square slot; 10. Positioning hole; 11. Heat dissipation slot; 12. Positioning cover; 13. Buckle structure; 14. Positioning pin; 15. Limiting plate; 16. Lead wire hole; 17. Positioning guide post; 18. Positioning slot; 19. Operating mechanism. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-5 The present invention provides an embodiment of a permanent magnet vacuum circuit breaker, comprising a circuit breaker body, the circuit breaker body including a fixed housing 1, a dustproof panel 3, a control frame 2 and a power switch 4. The fixed housing 1, the dustproof panel 3 and the control frame 2 are all detachable. The front end of the control frame 2 is equipped with a locking part 6, and the control frame 2 is locked to the fixed housing 1 through the locking part 6. An operating mechanism 19 is embedded inside the fixed housing 1, and a positioning cover 12 is detachably installed on the upper surface of the operating mechanism 19.

[0023] Furthermore, the upper surface of the positioning cover 12 is provided with a snap-fit ​​structure 13. The positioning cover 12 is snapped and fixed to the dustproof panel 3 through the snap-fit ​​structure 13, which can facilitate quick snap-fit ​​fixing of the dustproof panel 3. It has the advantages of convenient and quick assembly and disassembly. The dustproof panel 3 can play a good role in sealing and dustproof protection. The interior of the dustproof panel 3 is provided with a slot structure, and the power switch 4 is installed and fixed inside the slot structure, which has the advantages of convenient installation and fixing.

[0024] Furthermore, the upper surface of the control frame 2 is provided with a heat dissipation groove 11, which is used to dissipate heat from the circuit components of the fixed box 1. The inside of the locking part 6 is provided with a wire-passing slot 5, which is convenient for passing the power cord through. The front surface of the locking part 6 is provided with a slot structure 7.

[0025] Furthermore, an insulating support plate 8 is installed at the bottom of the control frame 2. The insulating support plate 8 provides good insulation support and protection. The surface of the insulating support plate 8 is provided with positioning holes 10, and the front end surface of the insulating support plate 8 is provided with square slots 9, which facilitates the installation and fixing of the insulating support plate 8.

[0026] Furthermore, the fixed housing 1 is provided with a positioning pin 14 inside, and the operating mechanism 19 is provided with a positioning slot 18 inside. The positioning pin 14 and the positioning slot 18 are inserted and fixed in a corresponding manner, so that the operating mechanism 19 can be accurately installed and fixed. The operating mechanism 19 can be quickly and accurately installed and fixed inside the fixed housing 1, which plays a good role in safety protection.

[0027] Furthermore, a limiting plate 15 is provided inside the fixed housing 1. The limiting plate 15 is engaged and fixed with the operating mechanism 19, which facilitates the limiting and fixing of the front end of the operating mechanism 19 and prevents the installation position of the operating mechanism 19 from shifting.

[0028] Furthermore, the front end of the fixed box 1 is provided with a lead wire hole 16. The lead wire hole 16, the positioning hole 10 and the wire through slot 5 are located on the same vertical line, which is convenient for threading and fixing the circuit wires. The fixed box 1 is equipped with a positioning guide post 17. The fixed box 1 is fixed to the control frame 2 by the positioning guide post 17, which has the advantage of convenient installation and alignment, and can accurately connect and fix the control frame 2 and the fixed box 1.

[0029] Working Principle: During use, an operating mechanism 19 is embedded inside the fixed housing 1. A positioning cover 12 is detachably mounted on the upper surface of the operating mechanism 19. A snap-fit ​​structure 13 is provided on the upper surface of the positioning cover 12. The positioning cover 12 is snapped and fixed to the dustproof panel 3 via the snap-fit ​​structure 13, allowing for quick and easy assembly and disassembly of the dustproof panel 3. The dustproof panel 3 provides excellent sealing and dustproof protection. A positioning pin 14 is provided inside the fixed housing 1, and a positioning slot 18 is provided inside the operating mechanism 19. The positioning pin 14 and the positioning slot 18 are correspondingly inserted and fixed, thereby allowing for... The operating mechanism 19 is precisely installed and fixed inside the fixed housing 1, providing good safety protection. The fixed housing 1 is equipped with a limit plate 15, which engages with the operating mechanism 19 to facilitate the limiting and fixing of the front end of the operating mechanism 19 and prevent the installation position of the operating mechanism 19 from shifting. Through the positioning and disassembly design of each component inside the permanent magnet vacuum circuit breaker, the alignment between each module is precise and stable, and the operating mechanism 19 can be safely and stably embedded in the circuit breaker housing, effectively ensuring the safe and stable operation of the operating mechanism 19.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0032] 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 permanent magnet vacuum circuit breaker, comprising a circuit breaker body, characterized in that, The circuit breaker body includes a fixed housing (1), a dustproof panel (3), a control frame (2), and a power switch (4). The fixed housing (1), the dustproof panel (3), and the control frame (2) are all detachable. The front end of the control frame (2) is equipped with a locking part (6). The control frame (2) is locked to the fixed housing (1) by the locking part (6). An operating mechanism (19) is embedded inside the fixed housing (1). A positioning cover (12) is detachably installed on the upper surface of the operating mechanism (19).

2. A permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The upper surface of the positioning cover (12) is provided with a snap-fit ​​structure (13). The positioning cover (12) is snapped and fixed to the dustproof panel (3) through the snap-fit ​​structure (13). The dustproof panel (3) is provided with a slot structure inside. The power switch (4) is installed and fixed inside the slot structure.

3. A permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The upper surface of the control frame (2) is provided with a heat dissipation groove (11), the inside of the locking part (6) is provided with a wire threading groove (5), and the front surface of the locking part (6) is provided with a slot structure (7).

4. A permanent magnet vacuum circuit breaker according to claim 1, characterized in that: An insulating support plate (8) is installed at the bottom of the control frame (2). The surface of the insulating support plate (8) is provided with positioning holes (10), and the front end surface of the insulating support plate (8) is provided with square slots (9).

5. A permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The fixed housing (1) is provided with a positioning pin (14) inside, and the operating mechanism (19) is provided with a positioning slot (18) inside. The positioning pin (14) and the positioning slot (18) are inserted and fixed in a corresponding manner.

6. A permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The fixed housing (1) is provided with a limiting plate (15) inside, and the limiting plate (15) is engaged and fixed with the operating mechanism (19).

7. A permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The front end of the fixed housing (1) is provided with a lead wire hole (16). The lead wire hole (16), the positioning hole (10) and the wire slot (5) are located on the same vertical line. The fixed housing (1) is equipped with a positioning guide post (17). The fixed housing (1) is fixed to the control frame (2) by the positioning guide post (17).

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