A high voltage grounding switch

Abstract

The utility model discloses a high -voltage grounding switch, the grounding switch body includes the base, the base front end rotation setting has the drive shaft, a plurality of movable contacts are fixedly installed on the drive shaft, the base top is provided with a plurality of insulators, and the top of each insulator is provided with the static contact that cooperates with corresponding movable contact, the anti -electric arc device includes the first mounting bracket of installing on movable contact, installs the second mounting bracket on static contact to set up collapsible arc baffle between first mounting bracket and second mounting bracket, and arc baffle surrounds the external space of static contact and movable contact, the utility model discloses through the dynamic shielding effect of collapsible arc baffle, has improved equipment arc -resistant performance and operation reliability significantly.

Description

Technical Field

[0001] This utility model relates to the field of grounding switch technology, and specifically to a high-voltage grounding switch. Background Technology

[0002] High-voltage grounding switches are crucial safety devices in power systems. They are mainly used to reliably ground the de-energized parts of lines or electrical equipment during maintenance, preventing injury to personnel and equipment due to misoperation or induced voltage, and ensuring operational safety.

[0003] In existing high-voltage grounding switches, the moving and stationary contacts are prone to generating strong electric arcs during opening and closing operations, especially under conditions of misoperation or residual charge. These arcs can not only burn or even melt the contact surfaces, reducing equipment lifespan and reliability, but the resulting high temperatures and pressures can also be ejected, endangering operator safety or causing secondary accidents such as phase-to-phase short circuits.

[0004] Currently, common measures to address the arcing problem include increasing the contact spacing and installing simple arc-extinguishing grids or metal partitions. However, simply increasing the contact spacing is limited by equipment size and cost; while fixed arc-extinguishing grids or partitions can isolate the arc to some extent, they severely affect the contact travel and cannot adapt to the large-range rotation characteristics of the grounding switch's moving contacts, resulting in poor or impossible opening and closing operations, thus having poor practicality.

[0005] Therefore, there is an urgent need in this field for a new type of arc-proof device that can effectively isolate electric arcs and ensure safety, while not interfering with the normal opening and closing operation of grounding switches. Utility Model Content

[0006] The present invention provides a high-voltage grounding switch to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-voltage grounding switch includes a grounding switch body and a plurality of anti-arc devices disposed on the grounding switch body. The grounding switch body includes a base, a drive shaft is rotatably disposed at the front end of the base, and a plurality of moving contacts are fixedly mounted on the drive shaft. A plurality of insulators are disposed at the top of the base, and a stationary contact that cooperates with the corresponding moving contact is disposed at the top of each insulator.

[0009] The arc-proof device includes a first mounting bracket installed on the moving contact, a second mounting bracket installed on the stationary contact, and a foldable arc-blocking cover disposed between the first mounting bracket and the second mounting bracket, the arc-blocking cover surrounding the external space of the stationary contact and the moving contact.

[0010] Preferably, both the first mounting bracket and the second mounting bracket have a "U" shaped structure. The bottom of the first mounting bracket is provided with a first mounting part for connecting with the moving contact, and the top of the second mounting bracket is provided with a second mounting part for connecting with the stationary contact.

[0011] Preferably, the first mounting part is fixedly connected to the moving contact by bolts, and the second mounting part is fixedly connected to the stationary contact by bolts.

[0012] Preferably, the arc shield is made of flexible insulating material and has an accordion-style folding structure.

[0013] Preferably, the arc shield is made of rubber or silicone material.

[0014] Preferably, the arc-blocking cover expands and contracts dynamically during the separation and engagement of the moving contact and the stationary contact.

[0015] Beneficial effects

[0016] The high-voltage grounding switch provided in this embodiment of the utility model has at least one of the following technical effects:

[0017] 1. Safe and reliable: The arc-blocking cover surrounds the contact ends of the moving and stationary contacts. The foldable arc-blocking cover can completely seal the electric arc generated during operation inside, effectively preventing high-temperature arc spray and greatly improving the safety of personnel and equipment.

[0018] 2. High adaptability: The arc isolation cover adopts an accordion-style flexible design, which can extend and retract freely with the rotation of the moving contact, perfectly adapting to the large-amplitude opening and closing movements of the grounding switch, without affecting its normal operation.

[0019] 3. Economical and durable: The device has a simple and compact structure, is easy to install and maintain, and while protecting the contacts and extending the equipment life, it has low manufacturing costs and is easy to promote and apply. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the grounding switch body structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the anti-arc device of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the present invention in the open state.

[0024] The correspondence between the labels and component names in the attached figures is as follows:

[0025] 1. Grounding switch body; 2. Arc prevention device; 3. Base; 4. Drive shaft; 5. Moving contact; 6. Insulator; 7. Stationary contact; 8. First mounting bracket; 9. Second mounting bracket; 10. Arc isolation cover; 11. First mounting part; 12. Second mounting part. Detailed Implementation

[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. 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.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments.

[0030] like Figure 1-4 The diagram shown is a structural schematic of a high-voltage grounding switch according to a preferred embodiment of the present invention.

[0031] In this embodiment, a grounding switch structure is provided, including a grounding switch body 1 and a plurality of arc-prevention devices 2 disposed on the grounding switch body 1. The grounding switch body 1 includes a base 3, and a drive shaft 4 is rotatably disposed at the front end of the base 3. A plurality of moving contacts 5 are fixedly mounted on the drive shaft 4. A plurality of insulators 6 are disposed on the top of the base 3, and a stationary contact 7 is disposed at the top of each insulator 6 to cooperate with the corresponding moving contact 5.

[0032] The arc-prevention device 2 includes a first mounting bracket 8 mounted on the moving contact 5, a second mounting bracket 9 mounted on the stationary contact 7, and a foldable arc-blocking cover 10 disposed between the first mounting bracket 8 and the second mounting bracket 9. The arc-blocking cover 10 completely surrounds the external space of the stationary contact 7 and the moving contact 5, effectively limiting the spread of electric arc.

[0033] Furthermore, both the first mounting bracket 8 and the second mounting bracket 9 are designed with a "U"-shaped structure. The bottom of the first mounting bracket 8 is provided with a first mounting part 11 for connecting with the moving contact 5, and the top of the second mounting bracket 9 is provided with a second mounting part 12 for connecting with the stationary contact 7. The first mounting part 11 is fixedly connected to the moving contact 5 by bolts, and the second mounting part 12 is also fixedly connected to the stationary contact 7 by bolts, resulting in a robust structure and convenient assembly and disassembly.

[0034] The arc-blocking cover 10 is made of flexible insulating material, preferably rubber or silicone, which has excellent arc resistance and mechanical toughness. Its structure is an accordion-style folding shape, which can expand and contract with the moving contact 5 and the stationary contact 7 during the opening and closing process, effectively covering the contact area at all times and ensuring operational safety.

[0035] The grounding switch structure in this embodiment significantly improves the equipment's arc resistance and operational reliability through the dynamic shielding effect of the foldable arc shield 10.

[0036] The high-voltage grounding switch of this utility model can be installed, connected or set in a common mechanical manner, and can be implemented as long as it can achieve its beneficial effect.

[0037] All technologies not described in detail in this utility model are known technologies. Those skilled in the art can easily implement this utility model based on their understanding of this specification, and the contents shown in the accompanying drawings are part of this specification.

[0038] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A high-voltage grounding switch, comprising a grounding switch body and a plurality of arc-prevention devices disposed on the grounding switch body, characterized in that: The grounding switch body includes a base, a drive shaft is rotatably provided at the front end of the base, and multiple moving contacts are fixedly installed on the drive shaft; multiple insulators are provided at the top of the base, and each insulator has a stationary contact at its top end that cooperates with the corresponding moving contact; The arc-proof device includes a first mounting bracket installed on the moving contact, a second mounting bracket installed on the stationary contact, and a foldable arc-blocking cover disposed between the first mounting bracket and the second mounting bracket, the arc-blocking cover surrounding the external space of the stationary contact and the moving contact.

2. The high-voltage grounding switch according to claim 1, characterized in that: Both the first mounting bracket and the second mounting bracket have a "U" shaped structure. The bottom of the first mounting bracket is provided with a first mounting part for connecting with the moving contact, and the top of the second mounting bracket is provided with a second mounting part for connecting with the stationary contact.

3. The high-voltage grounding switch according to claim 2, characterized in that: The first mounting part is fixedly connected to the moving contact by bolts, and the second mounting part is fixedly connected to the stationary contact by bolts.

4. The high-voltage grounding switch according to claim 1, characterized in that: The arc shield is made of flexible insulating material and has an accordion-style folding structure.

5. The high-voltage grounding switch according to claim 4, characterized in that: The arc shield is made of rubber or silicone material.

6. The high-voltage grounding switch according to claim 1, characterized in that: The arc-blocking cover expands and contracts dynamically during the opening and closing of the moving and stationary contacts.

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