Elastic buffer structure of environmental protection air tank circuit breaker operating mechanism

Abstract

The utility model belongs to the technical field of inflation cabinet circuit breaker, and disclose the elastic buffer structure of environmental protection inflation cabinet circuit breaker operating mechanism, including the inflation cabinet body, the inside wall of one side of inflation cabinet body is connected with the buffer case of nitrile rubber material, the inside surface of buffer case is equipped with circuit breaker body, the one end of buffer case and circuit breaker body abuts and is equipped with a plurality of buffer convex edges, both sides of buffer case are equipped with fixed assembly, a plurality of buffer convex edges and buffer case are integral structure, and the outer surface of a plurality of buffer convex edges is engraved with antiskid texture, the utility model discloses the nitrile rubber buffer case with buffer convex edge is set between inflation cabinet body and circuit breaker body, when operating mechanism drives circuit breaker switching, buffer case absorbs instantaneous impact force that operating mechanism transmits through the elastic deformation, and buffer convex edge disperses vibration energy, reduces the mechanical loss of operating mechanism and circuit breaker connecting part, prolongs operating mechanism life.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas-insulated switchgear circuit breakers, specifically the elastic buffer structure of the operating mechanism of an environmentally friendly gas-insulated switchgear circuit breaker. Background Technology

[0002] Environmentally friendly gas-filled switchgear, as a new generation of switchgear, is increasingly widely used in power systems. It is a medium-voltage switchgear that uses an environmentally friendly insulating gas medium to replace traditional SF6 gas and features a fully sealed structure. The insulating medium is dry CO2, nitrogen, or a mixture of environmentally friendly gases (such as N2 / CO2), replacing the greenhouse gas SF6 and achieving zero pollution emissions, especially CO2. The environmentally friendly gas-filled switchgear requires an independent modular gas box design, with airtightness ensured by laser welding. An internal gas density relay monitors the pressure of the environmentally friendly gas in real time, and a safety pressure relief channel allows for directional release of internal pressure in extreme situations. The insulation strength of the environmentally friendly gas can reach over 40% of that of SF6 gas, and a uniform electric field distribution is achieved through a pressure equalization enclosure and spherical chamfer design, balancing insulation with small size requirements. It incorporates an integrated vacuum circuit breaker / load switch and a three-position isolating-grounding switch. The main switch can be a permanent magnet mechanism vacuum circuit breaker or a spring mechanism vacuum circuit breaker, driven by a spring or permanent magnet mechanism, with mechanical interlocking to prevent misoperation.

[0003] It features a compact structure, flexible operation, and reliable interlocking, making it suitable for power distribution automation scenarios, especially in harsh environments and areas with high power requirements.

[0004] Existing circuit breaker operating mechanism buffer devices are prone to accelerated wear of transmission components due to vibrations during opening and closing. Secondly, the traditional method of fixing the operating mechanism to the circuit breaker is complex, requiring individual operation of multiple connection points during disassembly and assembly, hindering rapid separation and impacting maintenance efficiency. Furthermore, the significant vibrations during operation have a substantial impact on the fully sealed cabinet structure (some specifications include gas pressure).

[0005] Therefore, an elastic buffer structure for the operating mechanism of an environmentally friendly gas-insulated switchgear circuit breaker is proposed to address the above-mentioned problems. Currently, no elastic buffer structure for the operating mechanism of an environmentally friendly gas-insulated switchgear circuit breaker that solves these problems has been found. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides an elastic buffer structure for the operating mechanism of an environmentally friendly gas-insulated switchgear circuit breaker. This structure reduces mechanical wear at the connection between the operating mechanism and the circuit breaker, extends the service life of the operating mechanism, significantly improves the efficiency of disassembly and assembly of the operating mechanism and the circuit breaker, facilitates rapid maintenance, and has minimal impact on the sealing and pressure-bearing structure of the cabinet during operation.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an elastic buffer structure for the operating mechanism of an environmentally friendly gas-insulated switchgear circuit breaker, comprising a gas-insulated switchgear body, a buffer box made of nitrile rubber embedded in the inner wall of one side of the gas-insulated switchgear body, a circuit breaker body provided on the inner surface of the buffer box, a plurality of buffer protrusions provided at the end of the buffer box that abuts against the circuit breaker body, and fixing components provided on both sides of the buffer box.

[0008] Preferably, the buffer ridges and the buffer box are an integral structure, and the outer surface of the buffer ridges is engraved with anti-slip texture.

[0009] Preferably, the opening of the buffer box is curved.

[0010] Preferably, the fixing component includes a fixing groove formed in the inner wall of the gas-insulated switchgear body, a fixing rod is fixedly connected to the inner walls of both sides of the fixing groove, a return spring is wound around the outer surface of the fixing rod, and a snap-fit ​​block is slidably sleeved on the outer surface of the fixing rod, and the circuit breaker body is provided with a snap-fit ​​groove for use with the snap-fit ​​block.

[0011] Preferably, one end of the reset spring is fixedly connected to the inner wall of one side of the fixing groove, and the other end of the reset spring is fixedly connected to the snap-fit ​​block.

[0012] Preferably, the outer surfaces of the snap-fit ​​block and the snap-fit ​​groove are fitted with rubber pads, and the snap-fit ​​block and the snap-fit ​​groove are connected by an interference fit.

[0013] Preferably, the snap-fit ​​block is L-shaped and is slidably connected to the fixing groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model provides a nitrile rubber buffer box with buffer ridges between the gas-insulated switchgear body and the circuit breaker body. When the operating mechanism drives the circuit breaker to open or close, the buffer box absorbs the instantaneous impact force transmitted by the operating mechanism through elastic deformation, and the buffer ridges disperse the vibration energy, reducing the mechanical wear of the connection between the operating mechanism and the circuit breaker, extending the service life of the operating mechanism, and having virtually no impact on the closure and sealing of the switchgear. This is especially significant for a sealed gas-insulated switchgear body.

[0016] 2. This utility model, by setting a fixing component, forms an elastic locking structure at the engagement part of the operating mechanism and the circuit breaker. When it is necessary to separate the operating mechanism and the circuit breaker, pulling the snap-fit ​​block to compress the return spring can release the lock and achieve quick separation of the two. During installation, the snap-fit ​​is automatically completed by the rebound force of the return spring, without the need for additional tools, which greatly improves the disassembly and assembly efficiency of the operating mechanism and the circuit breaker and facilitates quick maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention excluding the circuit breaker body;

[0019] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the buffer box structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the circuit breaker body structure of this utility model.

[0022] In the diagram: 1. Gas-insulated switchgear body; 2. Circuit breaker body;

[0023] 3. Buffer box; 31. Buffer protrusion;

[0024] 4. Fixing component; 41. Fixing groove; 42. Return spring; 43. Fixing rod;

[0025] 44. Snap-on block; 441. Snap-on slot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 5 As shown, this utility model provides an elastic buffer structure for the operating mechanism of an environmentally friendly gas-insulated switchgear circuit breaker, including a gas-insulated switchgear body 1. A buffer box 3 made of nitrile rubber is embedded in the inner wall of one side of the gas-insulated switchgear body 1. A circuit breaker body 2 is provided on the inner surface of the buffer box 3. A number of buffer protrusions 31 are provided at the end of the buffer box 3 that abuts against the circuit breaker body 2. By cooperating with the circuit breaker body 2, the buffer box 3 made of nitrile rubber can form a wrap-around buffer for the circuit breaker body 2, which initially improves the shock absorption effect when the operating mechanism drives the circuit breaker to operate. Fixing components 4 are provided on both sides of the buffer box 3.

[0028] Specifically, several buffer protrusions 31 are integrated with the buffer box 3, and the outer surfaces of the buffer protrusions 31 are engraved with anti-slip textures. The integrated buffer protrusions 31 can enhance the contact stability between the buffer box 3 and the circuit breaker body 2, and the anti-slip textures can prevent the two from sliding relative to each other. At the same time, the protrusion structure can disperse the impact force and improve the buffering efficiency.

[0029] like Figures 1 to 5 As shown, the opening of the buffer box 3 is arc-shaped. The arc-shaped opening can reduce stress concentration at the edge of the buffer box 3, avoid cracking after long-term use, and at the same time facilitate the smooth insertion of the circuit breaker body 2 into the buffer box 3, reducing wear during installation.

[0030] Furthermore, the fixing component 4 includes a fixing groove 41 formed on the inner wall of the gas-insulated switchgear body 1. The inner walls on both sides of the fixing groove 41 are fixedly connected to a fixing rod 43. A return spring 42 is wound around the outer surface of the fixing rod 43, and a snap-fit ​​block 44 is slidably sleeved on the outer surface of the fixing rod 43. The circuit breaker body 2 is provided with a snap-fit ​​groove 441 that is used in conjunction with the snap-fit ​​block 44. The structural design of the fixing component 4 can realize a stable connection between the circuit breaker body 2 and the gas-insulated switchgear body 1, and at the same time provide a basis for subsequent quick disassembly and assembly, ensuring connection reliability while taking into account the ease of operation.

[0031] like Figures 1 to 5 As shown, one end of the return spring 42 is fixedly connected to the inner wall of one side of the fixing groove 41, and the other end of the return spring 42 is fixedly connected to the snap-fit ​​block 44. The elastic force of the return spring 42 can make the snap-fit ​​block 44 always tend to move towards the snap-fit ​​groove 441, ensuring that the snap-fit ​​block 44 and the snap-fit ​​groove 441 fit tightly and prevent the connection from becoming loose due to vibration.

[0032] It is worth noting that rubber pads are fitted on the outer surfaces of the snap-fit ​​block 44 and the snap-fit ​​groove 441 that are in contact with each other. The snap-fit ​​block 44 and the snap-fit ​​groove 441 are connected by an interference fit. The rubber pads can increase the friction between the snap-fit ​​block 44 and the snap-fit ​​groove 441. The interference fit further improves the tightness of the connection. At the same time, the rubber pads can absorb vibration and prevent wear caused by rigid contact between the two.

[0033] like Figures 1 to 5 As shown, the locking block 44 is L-shaped and is slidably connected to the fixing groove 41. The L-shaped locking block 44 can limit the circuit breaker body 2 from multiple directions. The sliding connection makes the movement of the locking block 44 in the fixing groove 41 smoother and facilitates the quick completion of locking and unlocking operations.

[0034] Working principle and process: During installation, first pull the locking block 44 outwards, causing it to slide along the fixing rod 43 and compress the return spring 42. At this time, the locking block 44 disengages from the inner space of the buffer box 3, reserving a channel for the circuit breaker body 2. Place the circuit breaker body 2 smoothly into the buffer box 3. The buffer box 3 and the buffer protrusion 31 initially fit the circuit breaker body 2 through elastic deformation. Release the locking block 44, and the return spring 42 releases potential energy to drive the locking block 44 to reset, causing it to lock into the locking groove 441 of the circuit breaker body 2, completing the fixation. When the operating mechanism drives the circuit breaker to operate, the buffer structure absorbs vibration. During disassembly, pull the locking block 44 again to disengage it from the locking groove 441, and the circuit breaker body 2 can be removed.

[0035] 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.

[0036] 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. An elastic buffer structure of a circuit breaker operating mechanism of an environmentally friendly gas insulated switchgear, comprising a gas insulated switchgear body (1), characterized in that: The inner wall of one side of the gas-filled cabinet body (1) is fitted with a buffer box (3) made of nitrile rubber. The inner surface of the buffer box (3) is provided with a circuit breaker body (2). The end of the buffer box (3) that abuts against the circuit breaker body (2) is provided with several buffer protrusions (31). Both sides of the buffer box (3) are provided with fixing components (4). The several buffer protrusions (31) and the buffer box (3) are an integral structure, and the outer surface of the several buffer protrusions (31) is engraved with anti-slip texture.

2. The elastic buffer structure of the environmentally friendly cubicle circuit breaker operating mechanism according to claim 1, wherein: The opening of the buffer box (3) is curved.

3. The elastic buffer structure of the environmentally friendly cubicle circuit breaker operating mechanism according to claim 1, wherein: The fixing component (4) includes a fixing groove (41) formed on the inner wall of the gas-filled cabinet body (1). The two inner walls of the fixing groove (41) are fixedly connected to a fixing rod (43). A return spring (42) is wound around the outer surface of the fixing rod (43), and a snap-fit ​​block (44) is slidably sleeved on the outer surface of the fixing rod (43). The circuit breaker body (2) is provided with a snap-fit ​​groove (441) that is used in conjunction with the snap-fit ​​block (44).

4. The elastic buffer structure of the environmentally friendly cubicle circuit breaker operating mechanism according to claim 3, characterized in that: One end of the reset spring (42) is fixedly connected to the inner wall of one side of the fixing groove (41), and the other end of the reset spring (42) is fixedly connected to the snap-fit ​​block (44).

5. The elastic buffer structure of the environmentally friendly cubicle circuit breaker operating mechanism according to claim 3, wherein: The outer surfaces of the snap-fit ​​block (44) and the snap-fit ​​groove (441) that are in contact are fitted with rubber pads, and the snap-fit ​​block (44) and the snap-fit ​​groove (441) are connected by an interference fit.

6. The elastic buffer structure of the environmentally friendly cubicle circuit breaker operating mechanism according to claim 5, wherein: The snap-fit ​​block (44) is L-shaped and is slidably connected to the fixing groove (41).

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