CN-224232596-U - 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 assembly and disassembly component, a silica gel spring protection component and a porcelain shell, wherein the quick assembly and disassembly component is arranged at the bottom of the silica gel spring protection component, the quick assembly and disassembly component comprises an annular fixing piece and four joint pieces, the bottoms of the annular fixing piece are connected with four bases through bolts, the bottoms of the four bases are fixedly connected with cylinders, the bottoms of the four cylinders are fixedly connected with solid columns, the quick assembly and disassembly component is arranged, the installation or disassembly can be completed only by pressing without complex tools or screws, the spring self-locking structure can quickly lock the position of an arc extinguishing chamber, so that the manual operation time is shortened, the pressing action is simple and visual, the operation error which can occur in the traditional bolt connection is successfully avoided, and meanwhile, the spring self-locking structure has good stability and reliability, and can effectively prevent the arc extinguishing chamber from loosening or falling.

Inventors

• WU GUOWEI
• Pang Maomao

Assignees

• 浙江俊发电气有限公司

Dates

Publication Date

20260512

Application Date

20250526

Claims (6)

1. 1. The arc extinguishing device of the high-voltage vacuum circuit breaker comprises a quick assembly and disassembly component (5), a silica gel spring protection component (4) and a porcelain shell (1), and is characterized in that the quick assembly and disassembly component (5) is arranged at the bottom of the silica gel spring protection component (4); Quick assembly disassembly subassembly (5) are including annular mounting (501), four joint (507), four bottom bolt of annular mounting (501) links to each other has four base (502), four the equal fixedly connected with cylinder (503) in bottom of base (502), four the equal fixedly connected with solid post (504) in bottom of cylinder (503), four the equal fixedly connected with trip (505) in bottom of solid post (504), four the equal slip cap of surface of solid post (504) is equipped with slider (506), four the equal fixedly connected with reference column (508) in top of joint (507), four the inside of reference column (508) has all been seted up and has been excavated groove (509), four the outer surface wall of reference column (508) all has been inserted two metal poles (510), eight the equal cover of surface of metal pole (510) is equipped with fixed cover (511), eight the equal elasticity in outer wall one side of fixed cover (511) is connected with spring (512), eight buckle one side of metal pole (510) is all fixed with buckle (‌ ‌).
2. 2. The arc extinguishing device of the high-voltage vacuum circuit breaker according to claim 1, wherein the silica gel spring protection assembly (4) comprises a silica gel protection sleeve (401), a group of buffer springs (402) are elastically connected between the inner surfaces of the silica gel protection sleeve (401), and a group of sponges (403) are fixedly connected between the inner surfaces of the silica gel protection sleeve (401).
3. 3. The arc extinguishing device of the high-voltage vacuum circuit breaker according to claim 1, wherein the top of the porcelain shell (1) is provided with a guide sleeve (2), and the top of the porcelain shell (1) is provided with a movable conducting rod (3).
4. 4. The arc extinguishing device of the high-voltage vacuum circuit breaker according to claim 1, wherein a fixed base (6) is arranged at the bottom of the porcelain shell (1), and the fixed base (6) is spirally connected with the bottoms of four joint pieces (507).
5. 5. The arc extinguishing device of a high voltage vacuum circuit breaker according to claim 1, wherein eight of the springs (512) are elastically connected to a corresponding one of the snaps (513).
6. 6. The arc extinguishing device of the high voltage vacuum circuit breaker according to claim 1, wherein the bottom of the annular fixing piece (501) is connected with top bolts of the four bases (502), and the outer surface of the porcelain shell (1) is fixedly connected with the inner surface of the silica gel protective sleeve (401).

Description

Arc extinguishing device of high-voltage vacuum circuit breaker Technical Field The utility model relates to the technical field of high-voltage vacuum circuit breakers, in particular to an arc extinguishing device of a high-voltage vacuum circuit breaker. Background The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinction are high vacuum, has the advantages of small volume, light weight, suitability for frequent operation and no maintenance for arc extinction, is more popular in power distribution networks, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and substations, is particularly suitable for use places requiring oilless maintenance and frequent operation, and can be arranged in centrally installed cabinets, double-layer cabinets and fixed cabinets to be used for controlling and protecting high-voltage electrical equipment ‌ ‌ ‌ ‌. The arc-extinguishing device of the high-voltage vacuum circuit breaker is one of the core components, and has the main functions that when the circuit breaker breaks current, the arc-extinguishing device can extinguish in a short time because the arc-extinguishing chamber is in a high vacuum state, the gas molecular density is extremely low, and the electric arc is difficult to maintain, and the device for eliminating the electric arc through a special physical mechanism can realize safe cutting-off ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ of a circuit. The existing arc extinguishing device of the high-voltage vacuum circuit breaker has the following defects: 1) The existing arc extinguishing device of the high-voltage vacuum circuit breaker needs to be screwed or unscrewed one by using tools in the traditional bolt connection mode, the connection mode is complex in operation and time-consuming, equipment downtime is increased, production efficiency is reduced, professional technicians are required to operate the arc extinguishing device, common personnel are difficult to complete installation or disassembly, and the traditional connection mode may have the risk of loosening or falling off, especially in a vibration or impact environment; 2) The existing arc extinguishing device of the high-voltage vacuum circuit breaker lacks the buffer function of a spring and a sponge, equipment is easy to crack or damage a porcelain shell when being subjected to vibration or impact, and particularly when the device is used in an industrial factory building or mobile equipment, the problem is more remarkable, and the device does not have an insulating barrier of a silica gel protective sleeve, so that the risk of current leakage is possibly increased. Disclosure of utility model The utility model provides a quick assembly disassembly component, which can be assembled or disassembled by pressing without complex tools or screws, and the self-locking structure of the spring can quickly lock the position of the arc extinguishing chamber, so that the manual operation time is shortened, and the problems in the background technology are effectively solved. In order to achieve the aim, the utility model adopts the following technical scheme that the arc extinguishing device of the high-voltage vacuum circuit breaker comprises a quick assembly and disassembly component, a silica gel spring protection component and a porcelain shell, wherein the quick assembly and disassembly component is arranged at the bottom of the silica gel spring protection component; The quick assembly disassembly subassembly includes annular mounting, four engaging members, the bottom bolt of annular mounting links to each other has four bases, the equal fixedly connected with cylinders in bottom of four bases, the equal fixedly connected with solid post in bottom of four cylinders, the equal fixedly connected with trip in bottom of four solid posts, the equal slip cap of surface of four solid posts is equipped with the slider, the equal fixedly connected with reference column in top of four engaging members, the grooving has all been seted up to the inside of four reference column, two metal bars have all been inserted to the outward appearance wall of four reference columns, the equal cover of the surface of eight metal bars is equipped with the fixed cover, the equal elastic connection in outer wall one side of eight fixed covers has the spring, the equal fixedly connected with buckle in outer wall one side of eight metal bars. Preferably, the silica gel spring protection assembly comprises a silica gel protection sleeve, a group of buffer springs are elastically connected between the inner surfaces of the silica gel protection sleeve, and a group of sponges are fixedly connected between the inner surfaces of the silica gel protection sleeve. Preferably, a guide sleeve is arranged at the top of the porcelain shell, and a movable conducting rod is arranged at the top of the porcelain shell. Prefe