CN201138634Y

CN201138634Y - Sleeve contacting arm for indoor high voltage vacuum switch

Info

Publication number: CN201138634Y
Application number: CNU2007201751592U
Authority: CN
Inventors: 赵振伟; 张丰红; 杨明朝
Original assignee: Henan Senyuan Electric Co Ltd
Current assignee: Henan Senyuan Electric Co Ltd
Priority date: 2007-12-10
Filing date: 2007-12-10
Publication date: 2008-10-22
Anticipated expiration: 2017-12-10

Abstract

The utility model discloses a contact arm sleeve of a small hand truck high voltage vacuum breaker for the operations of switching on and switching off of an electric network of an electric system with a voltage grade of 40.5kV; the contact arm sleeve is a conical thin wall structure; the conical thin wall structure is provided with a small port (2) on the horizontal direction and a large port (7) on the horizontal direction; the inner wall of the small port (2) is provided with a supporting rib (3) on the circle direction; the inner wall of the large port (7) is provided with a pipe socket (4), a hollow sandwich (5) and an internal contact arm cylinder (6); the contact arm sleeve of the vacuum breaker can completely cover the conductive contact arm (9) of the breaker and the port (8) of the insulating cylinder of the breaker, lead the electrified body of the vacuum breaker to be completely separated from the outside, enhance the insulating of the vacuum breaker, simultaneously increase the interphase and ground net air distance and the creepage distance of the electrified body and effectively solve the insulating of the conductive contact arm of the breaker to a complete set of tank closing housing as well as the interphase insulating problem of the breaker; the contact arm sleeve can be mounted and used conveniently.

Description

A kind of indoor high-voltage vacuum circuit breaker contact arm sleeve

Technical field

The utility model relates to the indoor AC high voltage vacuum breaker in a kind of electrical power distribution system, and is special relevant with the contact arm insulation system of high-pressure vacuum breaker.

Background technology

Along with the development of China's power technology and power product, middle die pressing product miniaturization develop into main flow.The development of miniaturization circuit breaker is very fast both at home and abroad at present, but the development of miniaturization circuit breaker, the problem that must bring insulating capacity to reduce, the air-insulated handcart type vacuum circuit breaker of 40.5kV electric pressure 300mm spaced apart particularly, the quiet end of galvanic circle contact Insulation Problems alternate and over the ground is difficult to solve especially.Conventional solution is to install insulating barrier additional, the perhaps coated heat-shrinkable T bush of copper conduction contact arm, or do vulcanizing treatment.These way cost height, technology is loaded down with trivial details, and the Insulation Problems between the relative voltage switchgear housing in circuit breaker limit can not solve the alternate and circuit breaker of circuit breaker effectively and cooperate with switch cubicle the time.The obstacle of die pressing product miniaturization development during this problem becomes.

Summary of the invention

The utility model is little at present 40.5kV electric pressure miniaturization air insulation vacuum circuit-breaker size, phase spacing is little, and the circuit breaker little and a kind of quiet end conductive component of contact of breaker can cover fully of designing and developing of the insulation distance between circuit breaker and voltage switchgear housing when cooperating with switch cubicle, form isolation with the outside, effectively solve the contact arm sleeve of Insulation Problems.

The technical solution of the utility model is: the contact arm sleeve that designs a kind of conical thin-wall structure, this pyramidal structure has a less port and a bigger port, be portlet of horizontal direction and a large port, the portlet inwall is provided with brace rod in a circumferential direction, and horn mouth, internal layer contact arm tube and hollow interlayer are arranged in the large port.Utilize this conical thin-wall structure that the conduction contact arm of circuit breaker, the insulating cylinder port of circuit breaker are covered fully, vacuum circuit-breaker conduction contact arm and outside are isolated fully, strengthened the insulation of vacuum circuit-breaker, increased the creepage distance of circuit breaker simultaneously.

The indoor high-voltage vacuum circuit breaker contact arm sleeve that the utility model provides has been taken into account insulation and the circuit breaker alternate insulation of conduction contact arm to voltage switchgear, has solved Insulation Problems effectively, and easy to install.

Description of drawings

Fig. 1 is the outline drawing of an embodiment of the utility model vacuum circuit-breaker contact arm sleeve;

Fig. 2 is a sectional structure schematic diagram embodiment illustrated in fig. 1;

Fig. 3 is the rigging position schematic diagram of using on the vacuum circuit-breaker insulating cylinder embodiment illustrated in fig. 1.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Among the figure: 1, the insulating cylinder port 9 of vacuum circuit-breaker contact arm sleeve 2, horizontal direction portlet 3, brace rod 4, horn mouth 5, hollow interlayer 6, internal layer contact arm tube 7, horizontal direction large port 8, circuit breaker, the conduction contact arm of circuit breaker

As shown in the figure, this utility model vacuum circuit-breaker contact arm sleeve is the thin-wall construction of taper, and this conical thin-wall structure has a horizontal direction portlet 2 and one ice square to large port 7, and the inwall of portlet 2 has brace rod 3 in a circumferential direction.Inwall at large port 7 has horn mouth 4, hollow interlayer 5 and internal layer contact arm tube 6.

The utility model vacuum circuit-breaker insulating sleeve 1 body is formed by the epoxy resin insulation material cast.

During use, as shown in Figure 3, vacuum circuit-breaker contact arm sleeve 1 covers the conduction contact arm 9 of circuit breaker and the insulating cylinder port 8 of circuit breaker to get up fully, makes the electrified body of vacuum circuit-breaker and cuts open isolation outward.In the insulating cylinder port 8 of circuit breaker extend into by horizontal direction large port 7 and internal layer contact arm tube 6 formed hollow interlayers 5 when assembling, so not only make the electrified body and the outside effective isolation of vacuum circuit-breaker, and increased electrified body alternate and over the ground air clear distance and creepage distance.

This vacuum circuit breaker contact arm sleeve makes all electric-conductors of vacuum circuit-breaker top and outside isolate fully, has solved Insulation Problems effectively.

Claims

1, a kind of indoor high-voltage vacuum circuit breaker contact arm sleeve, it is characterized in that: sleeve is the conical thin-wall structure, this conical thin-wall structure has a horizontal direction portlet (2) and a horizontal direction large port (7), at the inwall of large port (7) horn mouth (4), hollow interlayer (5) and internal layer contact arm tube (6) is arranged.

2, a kind of indoor high-voltage vacuum circuit breaker contact arm sleeve according to claim 1, it is characterized in that: the inwall of described conical thin-wall structure level direction portlet (2) has brace rod (3) in a circumferential direction.

3, a kind of indoor high-voltage vacuum circuit breaker contact arm sleeve according to claim 1 and 2 is characterized in that: sleeve body is formed by the epoxy resin insulation material cast.