Circuit breaker and arc extinguishing chamber thereof
A technology for arc extinguishing chambers and circuit breakers, applied to high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of large volume of circuit breakers, arc gap breakdown shell, high height, etc., to increase the inner surface area and improve The effect of breaking ability
Active Publication Date: 2019-06-11
XIAN XD SWITCHGEAR ELECTIC CO LTD +1
View PDF6 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When performing short-circuit breaking, the gas at the gap between the fractures rapidly heats up and expands under the action of the arc, and most of the hot gas will be discharged from the downstream channel of the static contact system into the large tank of the arc extinguishing chamber, while the large The hot air flow in the tank can easily cause arc gap breakdown or shell-to-ground insulation breakdown. For this reason, the current circuit breaker arc extinguishing chamber usually chooses to increase the volume and length of the downstream area when designing, but this will lead to open circuit The overall volume of the device is large and the height is high, which is difficult to meet the design requirements of intensive, miniaturized and high parameters
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] For ease of understanding, the present invention will be further described below in conjunction with the accompanying drawings.
[0026] see figure 1 and figure 2 , figure 1 It is a schematic diagram of the three-phase common box arc extinguishing chamber provided by the embodiment of the present invention, figure 2 yes figure 1 M-M sectional view in . The three-phase interrupters A, B, and C are all located in the shell 1 and parallel to the axis 2, and the three are arranged in an isosceles triangle, such as figure 2 As shown, phase A and phase C are located at the two endpoints of the base of the isosceles triangle, phase B is located at the apex of the isosceles triangle, and the structure of the arc extinguishing chamber of each phase is the same; the shell 1 is a pressure vessel, which is filled with a certain insulating SF of medium pressure 6 gas. The arc extinguishing chamber includes a moving contact system 3, a static contact system 5 and an insulat...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a circuit breaker and an arc extinguishing chamber thereof. The arc extinguishing chamber comprises a movable contact system, a static contact system and an insulating cylinder,wherein the movable contact system is positioned above the insulating cylinder; the static contact system is located below the insulating cylinder; the static contact system comprises a static contact support part (53) with a downstream channel (54); the static contact support part (53) is provided with a plurality of cooling fins (55) arranged in the downstream channel (54), wherein the plurality of cooling fins (55) are uniformly distributed along the circumferential direction of the static contact support part (53), and extend along the axial direction of the static contact support part (53) in the axial direction. The arc extinguishing chamber provided by the invention can improve the breaking capacity of the circuit breaker, and intensive pattern, miniaturization and high parametersof the circuit breaker product can be achieved.
Description
technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a circuit breaker and an arc extinguishing chamber. Background technique [0002] With the rapid development of the power market, the power market has higher and higher requirements for miniaturized, large-capacity, and high-parameter performance products. All switch manufacturers have carried out intensive and miniaturized technical upgrades for existing products. [0003] The arc extinguishing chamber of the circuit breaker includes a moving contact system and a static contact system, and the moving contact system and the static contact system are connected through an insulator, which forms a certain contact interval (that is, the arc extinguishing fracture). When performing short-circuit breaking, the gas at the gap between the fractures rapidly heats up and expands under the action of the arc, and most of the hot gas will be discharged from the downstream channel of ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H01H33/91
Inventor 张震锋马曾锐崔明硕何创伟常治国郭伟阮艳丽
Owner XIAN XD SWITCHGEAR ELECTIC CO LTD