Arc extinguishing device of high-voltage vacuum circuit breaker

Abstract

The utility model provides an arc extinguishing device of a high-voltage vacuum circuit breaker, which relates to the technical field of high-voltage vacuum circuit breakers, and comprises a quick disassembly and assembly assembly, a silica gel spring protection assembly and a porcelain shell, and the quick disassembly and assembly assembly is arranged at the bottom of the silica gel spring protection assembly; the rapid dismounting and mounting assembly comprises an annular fixing piece and four joint pieces, the bottom of the annular fixing piece is connected with four bases through bolts, the bottoms of the four bases are fixedly connected with cylinders, and the bottoms of the four cylinders are fixedly connected with solid columns. Mounting or dismounting can be completed only by pressing, the spring self-locking structure can quickly lock the position of the arc extinguish chamber, so that the manual operation time is reduced, the pressing action is simple and visual, operation errors in traditional bolt connection are successfully avoided, and meanwhile, the spring self-locking structure has good stability and reliability, so that the service life of the arc extinguish chamber is prolonged. And the arc extinguish chamber can be effectively prevented from loosening or falling off.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage vacuum circuit breaker technology, and in particular to an arc-extinguishing device for a high-voltage vacuum circuit breaker. Background Technology

[0002] Vacuum circuit breakers are named for their high vacuum nature, which is the arc-extinguishing medium and the insulating medium between the contacts after arc extinguishing. They have the advantages of small size, light weight, suitability for frequent operation, and no maintenance required for arc extinguishing. They are widely used in power distribution networks and can be used in industrial and mining enterprises, power plants, and substations for the protection and control of electrical equipment. They are particularly suitable for applications requiring oil-free operation, minimal maintenance, and frequent operation. Circuit breakers can be configured in medium-voltage switchgear, double-layer switchgear, and fixed switchgear for the control and protection of high-voltage electrical equipment.

[0003] The arc-extinguishing device of a high-voltage vacuum circuit breaker is one of its core components. Its main function is to extinguish the arc in a short time when the circuit breaker interrupts the current because the arc-extinguishing chamber is in a high vacuum state with extremely low gas molecule density. This device eliminates the arc through a special physical mechanism, thereby achieving safe disconnection of the circuit.

[0004] The existing arc-extinguishing device for a high-voltage vacuum circuit breaker has the following shortcomings:

[0005] 1) The existing high-voltage vacuum circuit breaker arc extinguishing device uses a traditional bolt connection method, which requires tools to tighten or loosen the screws one by one. This connection method is cumbersome and time-consuming, which increases equipment downtime and reduces production efficiency. In addition, it requires professional technicians to operate, and ordinary personnel cannot complete the installation or disassembly. Furthermore, the traditional connection method may have the risk of loosening or falling off, especially in vibration or impact environments.

[0006] 2) Existing high-voltage vacuum circuit breakers lack the buffering effect of springs and sponges in their arc extinguishing devices. When the equipment is subjected to vibration or impact, the porcelain shell is prone to cracking or breakage. This problem is more prominent when used in industrial plants or mobile equipment. Furthermore, the lack of an insulating barrier from the silicone protective sleeve may increase the risk of current leakage. Utility Model Content

[0007] This invention proposes a quick-assembly and disassembly component that requires no complicated tools or screws for fixing; installation or disassembly can be completed simply by pressing. The spring self-locking structure can quickly lock the position of the arc-extinguishing chamber, thereby reducing manual operation time and effectively solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an arc-extinguishing device for a high-voltage vacuum circuit breaker, comprising a quick-release assembly, a silicone spring protection assembly, and a porcelain shell, wherein the quick-release assembly is installed at the bottom of the silicone spring protection assembly;

[0009] The quick-assembly assembly includes a ring-shaped fastener and four connecting parts. The bottom of the ring-shaped fastener is bolted to four bases. The bottom of each of the four bases is fixedly connected to a cylinder. The bottom of each of the four cylinders is fixedly connected to a solid column. The bottom of each of the four solid columns is fixedly connected to a latch. The outer surface of each of the four solid columns is fitted with a slider. The top of each of the four connecting parts is fixedly connected to a positioning column. The interior of each of the four positioning columns has a groove. The outer wall of each of the four positioning columns has two metal rods inserted. The outer surface of each of the eight metal rods is fitted with a fixing sleeve. One side of the outer wall of each of the eight fixing sleeves is elastically connected to a spring. One side of the outer wall of each of the eight metal rods is fixedly connected to a buckle.

[0010] Preferably, the silicone spring protective assembly includes a silicone protective sleeve, a set of buffer springs elastically connected between the inner surfaces of the silicone protective sleeve, and a set of sponges fixedly connected between the inner surfaces of the silicone protective sleeve.

[0011] Preferably, a guide sleeve is installed on the top of the ceramic shell, and a movable conductive rod is installed on the top of the ceramic shell.

[0012] Preferably, the bottom of the ceramic shell is provided with a fixed base, and the fixed base is spirally connected to the bottom of the four connecting parts.

[0013] Preferably, eight springs are elastically connected to a corresponding snap-fit.

[0014] Preferably, the bottom of the annular fastener and the top of the four bases are bolted together, and the outer surface of the ceramic shell and the inner surface of the silicone protective sleeve are fixedly connected.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, by setting up a quick-assembly and disassembly component, no complicated tools or screws are required for fixing. Installation or disassembly can be completed simply by pressing. The spring self-locking structure can quickly lock the position of the arc-extinguishing chamber, thereby reducing manual operation time. Moreover, the pressing action is simple and intuitive, successfully avoiding the operational errors that may occur in traditional bolt connections. At the same time, the spring self-locking structure has good stability and reliability, and can effectively prevent the arc-extinguishing chamber from loosening or falling off.

[0017] 2. In this utility model, a silicone spring protective component is provided, wherein the spring and sponge have good buffering effect and can effectively absorb external impact force. When the equipment is subjected to vibration or impact, the spring and sponge will disperse and absorb energy, thereby reducing the impact on the ceramic shell. In addition, the silicone protective sleeve has excellent insulation performance, which can further improve the safety of the equipment. Attached Figure Description

[0018] Figure 1 This is a perspective view of the main structure of the arc-extinguishing device of a high-voltage vacuum circuit breaker proposed in this utility model;

[0019] Figure 2 This is a three-dimensional cross-sectional view of the arc-extinguishing device of a high-voltage vacuum circuit breaker proposed in this utility model;

[0020] Figure 3 This is an enlarged cross-sectional view of a quick-assembly and disassembly assembly component in the arc-extinguishing device of a high-voltage vacuum circuit breaker proposed in this utility model.

[0021] Figure 4 This is a partial enlarged cross-sectional view of a quick-assembly and disassembly assembly component in the arc-extinguishing device of a high-voltage vacuum circuit breaker proposed in this utility model.

[0022] Figure 5 This is an enlarged cross-sectional view of the silicone spring protection assembly in the arc-extinguishing device of a high-voltage vacuum circuit breaker proposed in this utility model.

[0023] Legend: 1. Ceramic shell; 2. Guide sleeve; 3. Moving conductive rod; 4. Silicone spring protective assembly; 401. Silicone protective sleeve; 402. Buffer spring; 403. Sponge; 5. Quick-release assembly; 501. Circular fastener; 502. Base; 503. Cylinder; 504. Solid column; 505. Clip; 506. Slider; 507. Connector; 508. Positioning post; 509. Groove; 510. Metal rod; 511. Fixing sleeve; 512. Spring; 513. Buckle; 6. Fixed base. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1, according to Figures 1-5 As shown, this utility model provides a technical solution: an arc extinguishing device for a high-voltage vacuum circuit breaker, including a quick-release assembly 5, a silicone spring protection assembly 4, and a porcelain shell 1, wherein the quick-release assembly 5 is installed at the bottom of the silicone spring protection assembly 4;

[0027] The quick-assembly assembly 5 includes an annular fastener 501 and four connecting parts 507. The bottom of the annular fastener 501 is bolted to four bases 502. The bottom of each of the four bases 502 is fixedly connected to a cylinder 503. The bottom of each of the four cylinders 503 is fixedly connected to a solid column 504. The bottom of each of the four solid columns 504 is fixedly connected to a latch 505. The outer surface of each of the four solid columns 504 is slidably fitted with a slider 506. The top of each of the four connecting parts 507 is fixedly connected to a positioning column 508. The interior of each of the four positioning columns 508 is provided with a groove 509. Two metal rods 510 are inserted into the outer wall of each of the four positioning columns 508. The outer surface of each of the eight metal rods 510 is fitted with a fixing sleeve 511. One side of the outer wall of each of the eight fixing sleeves 511 is elastically connected to a spring 512. One side of the outer wall of each of the eight metal rods 510 is fixedly connected to a buckle 513.

[0028] The overall effect achieved by embodiment 1 is as follows: By pre-setting the above components, a complete quick-assembly assembly 5 is formed. First, four bases 502 are bolted to the bottom of the annular fixing member 501. A cylinder 503 is fixedly connected to the bottom of each of the four bases 502, and a solid column 504 is fixedly connected to the bottom of each of the four cylinders 503. A tenon 505 is fixedly connected to the bottom of each of the four solid columns 504. A slider 506 is slidably fitted on the outer surface of each of the four solid columns 504. A positioning column 508 is fixedly connected to the top of each of the four connecting members 507. Next, a groove 509 is opened inside each of the four positioning columns 508, and the outer walls of each of the four positioning columns 508 are inserted into... Two metal rods 510 are provided, and fixing sleeves 511 are fitted on the outer surfaces of all eight metal rods 510. Springs 512 are elastically connected to one side of the outer wall of each of the eight fixing sleeves 511, and buckles 513 are fixedly connected to one side of the outer wall of each of the eight metal rods 510. When the arc-extinguishing device of the high-voltage vacuum circuit breaker needs to be quickly installed, firstly, under the action of force, the components below it are moved towards the fixed base 6 via the annular fixing member 501. When the four latches 505 are fully inserted into the corresponding grooves 509, the four latches 505 and their connected components are limited. Secondly, the four latches 505 fully contact the corresponding... The corresponding two latches 513, and the eight latches 513, under the elastic deformation provided by the corresponding springs 512, cause the corresponding two latches 513 to move outward. At this time, the four tenons 505 successfully pass through the corresponding two latches 513, and each pair of latches 513 fully fixes the four tenons 505. Next, when it is necessary to engage and lock, pressing down again under the action of force, the four sliders 506 fully contact the corresponding two latches 513. The eight latches 513, under the elastic deformation provided by the corresponding springs 512, cause the corresponding two latches 513 to move outward. Under the action of continuous downward force, the four sliders 506 fully contact the corresponding two latches 513. Block 506 successfully passes through the corresponding two clips 513. At this point, it is pulled upward by external force. Under the action of force, the corresponding two clips 513 slide across the outer surface of the slider 506, thereby completing the unlocking. This is a quick-release assembly / disassembly component 5 setting. No complicated tools or screws are required for fixing. Installation or disassembly can be completed simply by pressing. The self-locking structure of spring 512 can quickly lock the position of the arc-extinguishing chamber, thereby reducing manual operation time. Moreover, the pressing action is simple and intuitive, successfully avoiding the operational errors that can occur in traditional bolt connections. At the same time, the self-locking structure of spring 512 has good stability and reliability, and can effectively prevent the arc-extinguishing chamber from loosening or falling off.

[0029] Example 2, according to Figures 1-5As shown, the silicone spring protective assembly 4 includes a silicone protective sleeve 401, a set of buffer springs 402 elastically connected between the inner surfaces of the silicone protective sleeve 401, a set of sponges 403 fixedly connected between the inner surfaces of the silicone protective sleeve 401, a guide sleeve 2 installed on the top of the ceramic shell 1, a movable conductive rod 3 installed on the top of the ceramic shell 1, a fixed base 6 provided at the bottom of the ceramic shell 1, the fixed base 6 and the bottom of four connecting parts 507 are spirally connected, eight springs 512 and a corresponding buckle 513 are elastically connected, the bottom of the annular fixing part 501 and the top of the four bases 502 are bolted together, and the outer surface of the ceramic shell 1 and the inner surface of the silicone protective sleeve 401 are fixedly connected.

[0030] The overall effect of embodiment 2 is as follows: by pre-setting the above components, a complete silicone spring protective assembly 4 is formed. First, a set of buffer springs 402 are elastically connected between the inner surfaces of the silicone protective sleeve 401, and a set of sponges 403 are fixedly connected between the inner surfaces of the silicone protective sleeve 401. In this arrangement of the silicone spring protective assembly 4, the buffer springs 402 and sponges 403 have good buffering effect and can effectively absorb external impact force. When the equipment is subjected to vibration or impact, the buffer springs 402 and sponges 403 will disperse and absorb energy, thereby reducing the impact on the ceramic shell 1. Furthermore, the silicone protective sleeve 401 has excellent insulation performance, which can further improve the safety of the equipment.

[0031] The working principle of the entire device is as follows: During the installation phase, the components to be assembled are placed in a safe area to provide a safe assembly environment for subsequent assembly. First, a guide sleeve 2 is installed on the top of the ceramic shell 1, and a movable conductive rod 3 is installed on the top of the ceramic shell 1. A fixed base 6 is installed at the bottom of the ceramic shell 1, so that the fixed base 6 and the bottom of the four connecting parts 507 are spirally connected, and the outer surface of the ceramic shell 1 is fixedly connected to the inner surface of the silicone protective sleeve 401. Four bases 502 are bolted to the bottom of the annular fixing part 501. A cylinder 503 is fixedly connected to the bottom of each of the four bases 502, and a solid column 504 is fixedly connected to the bottom of each of the four cylinders 503. The bottoms of the four solid columns 504 are also fixed... Connecting tenons 505, sliders 506 are slidably fitted on the outer surfaces of the four solid pillars 504, positioning pillars 508 are fixedly connected to the top of the four connecting parts 507, grooves 509 are cut into the interior of the four positioning pillars 508, two metal rods 510 are inserted into the outer walls of the four positioning pillars 508, fixing sleeves 511 are fitted on the outer surfaces of the eight metal rods 510, and springs 512 are elastically connected to one side of the outer wall of the eight fixing sleeves 511, buckles 513 are fixedly connected to one side of the outer wall of the eight metal rods 510, and a set of buffer springs 402 are elastically connected between the inner surfaces of the silicone protective sleeves 401, and a set of sponges 403 are fixedly connected between the inner surfaces of the silicone protective sleeves 401.

[0032] The working principle of this device is as follows: The working stage is as follows: After all components are assembled, check whether each component is properly installed and fixed to ensure there is no looseness. Once confirmed, manually place the entire arc-extinguishing device into the high-voltage vacuum circuit breaker. After alignment, manually press down. Under the action of force, the annular fixing member 501 drives the components below it to move towards the fixed base 6. When the four latches 505 are fully inserted into the corresponding slots 509, the four latches 505 and their connected components are limited. Then, the four latches 505... 05. The eight latches 513 fully contact the corresponding two buckles 513. Under the elastic deformation provided by the corresponding springs 512, the eight latches 513 move outwards, causing the corresponding two buckles 513 to move outwards. At this time, the four tenons 505 successfully pass through the corresponding two buckles 513, and each pair of latches 513 fully secures the four tenons 505. Next, when locking is required, pressing again causes the four sliders 506 to fully contact the corresponding two buckles 513. Under the elastic deformation provided by the corresponding springs 512, the eight latches 513... The downward force causes the corresponding two latches 513 to move outward. Under the continuous downward force, the four sliders 506 successfully pass through the corresponding two latches 513. At this time, they are pulled upward by external force. Under the force, the corresponding two latches 513 slide across the outer surface of the sliders 506, thereby unlocking them. This is a quick-release assembly 5. No complicated tools or screws are required for fixing. Installation or disassembly can be completed simply by pressing. The self-locking structure of the spring 512 can quickly lock the position of the arc-extinguishing chamber, thereby reducing manual operation time. The pressing action is simple and intuitive, successfully avoiding the operation errors that can occur in traditional bolt connections. At the same time, the self-locking structure of the spring 512 has good stability and reliability, which can effectively prevent the arc-extinguishing chamber from loosening or falling off. Secondly, the silicone spring protective assembly 4 is set up. The buffer spring 402 and the sponge 403 have good buffering effect and can effectively absorb external impact force. When the equipment is subjected to vibration or impact, the buffer spring 402 and the sponge 403 will disperse and absorb energy, thereby reducing the impact on the ceramic shell 1. In addition, the silicone protective sleeve 401 has excellent insulation performance, which can further improve the safety of the equipment.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or equivalent variations to the above-disclosed technical content and apply them to other fields. However, any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. An arc-extinguishing device for a high-voltage vacuum circuit breaker, comprising a quick-release assembly (5), a silicone spring protection assembly (4), and a porcelain shell (1), characterized in that: The quick-release assembly (5) is installed at the bottom of the silicone spring protective assembly (4); The quick-release assembly (5) includes an annular fastener (501) and four connecting parts (507). The bottom of the annular fastener (501) is bolted to four bases (502). The bottom of each of the four bases (502) is fixedly connected to a cylinder (503). The bottom of each of the four cylinders (503) is fixedly connected to a solid column (504). The bottom of each of the four solid columns (504) is fixedly connected to a latch (505). The outer surface of each of the four solid columns (504) is slidably fitted with a slider (506). The top of each of the four connecting parts (507) is fixedly connected to a positioning post (508), the interior of each of the four positioning posts (508) is provided with a groove (509), the outer wall of each of the four positioning posts (508) is inserted with two metal rods (510), the outer surface of each of the eight metal rods (510) is fitted with a fixing sleeve (511), one side of the outer wall of each of the eight fixing sleeves (511) is elastically connected with a spring (512), and one side of the outer wall of each of the eight metal rods (510) is fixedly connected with a buckle (513).

2. The arc-extinguishing device for a high-voltage vacuum circuit breaker according to claim 1, characterized in that: The silicone spring protective assembly (4) includes a silicone protective sleeve (401), a set of buffer springs (402) are elastically connected between the inner surfaces of the silicone protective sleeve (401), and a set of sponges (403) are fixedly connected between the inner surfaces of the silicone protective sleeve (401).

3. The arc-extinguishing device for a high-voltage vacuum circuit breaker according to claim 1, characterized in that: A guide sleeve (2) is installed on the top of the ceramic shell (1), and a movable conductive rod (3) is installed on the top of the ceramic shell (1).

4. The arc-extinguishing device for a high-voltage vacuum circuit breaker according to claim 1, characterized in that: The bottom of the ceramic shell (1) is provided with a fixed base (6), and the fixed base (6) is spirally connected to the bottom of four connecting parts (507).

5. The arc-extinguishing device for a high-voltage vacuum circuit breaker according to claim 1, characterized in that: The eight springs (512) are elastically connected to a corresponding snap-fit ​​(513).

6. The arc-extinguishing device for a high-voltage vacuum circuit breaker according to claim 1, characterized in that: The bottom of the annular fastener (501) and the top of the four bases (502) are bolted together, and the outer surface of the ceramic shell (1) and the inner surface of the silicone protective sleeve (401) are fixedly connected.

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