CN204966438U

CN204966438U - Drop out fuse carries and melts piece

Info

Publication number: CN204966438U
Application number: CN201520213124.8U
Authority: CN
Inventors: 孙鸣; 王伟; 娄伟; 张李俊
Original assignee: Cooper Electronic Technologies Shanghai Co Ltd
Current assignee: Cooper Electronic Technologies Shanghai Co Ltd
Priority date: 2015-04-09
Filing date: 2015-04-09
Publication date: 2016-01-13
Anticipated expiration: 2025-04-09

Abstract

The utility model provides a drop out fuse carries and melts piece, a serial communication port, including putting off arc grey vulcanized fiber paper pipe, the grey vulcanized fiber paper pipe of putting off arc upper and lower both ends respectively with last copper in the bushing pipe be in the same place with time copper casting crimping, the grey vulcanized fiber paper pipe of putting off arc, go up in the copper bushing pipe and down the outside of copper casting be equipped with epoxy flooding glass fiber silk winding layer, in the grey vulcanized fiber paper of putting off arc pipe and the last copper between the bushing pipe and put off arc grey vulcanized fiber paper pipe and pass through with lower copper casting epoxy flooding glass fiber silk winding layer sealed. The utility model has the advantages of simple structure it is workable, improve and cut -off the performance, reduce and became invalid probably to the processing cost has been reduced.

Description

A kind of fuse switch fusing carrier

Technical field

The utility model relates to a kind of fuse switch fusing carrier.

Background technology

Fuse switch is a kind of overload the most frequently used in 12-40.5kV electric power system and the gamut protective device of short circuit; it have economy, easy to operate, adapt to the features such as outdoor environment is strong, be widely used in distribution line and distribution transformer primary side as protection with carry out equipment throwing, cut the use of operation.Its operation principle is: penetrated by fuse in fusing carrier, one end foundry goods seals, the other end is strained and is connected to the lower hinge place of fusing carrier, is then incorporated in the pedestal of fuse switch by whole fusing carrier, makes whole fusing carrier and lower hinge, pedestal form the dead point form of 4 connecting rods; When circuit produces overcurrent, due to the spring release pressure of fuse lower end tension at hinge place, overheated fuse melt is broken and forms fracture generation electric arc, and the blow-out material in fusion tube carries out blow-out owing to crossing thermal evaporation generation high pressure arc-extinguishing gas equally, simultaneously, due to fuse break after impulse force promoted the dead point of 4 linkages, by gravity, fusing carrier is fallen from fuse switch pedestal along hinge, circuit is disconnected and forms enough fractures, excision faulty section circuit or faulty equipment.

Common fuse switch fusing carrier is made up of fusion tube, upper and lower copper casting, fuse cap and lower hinge, fusion tube two ends are fixed with upper and lower copper casting pin respectively, upper copper casting and fuse cap are with being threaded, and lower copper casting is connected with lower hinge elastic cylindrical pin.Along with distribution system is for higher short circuit interruption Capability Requirement, often because the factor such as manufacturing process, tolerance produces some gaps in junction when the fusing carrier of prior art and upper and lower copper casting pin are fixed, and when cut-offfing short circuiting arc, know from experience due to these gap high pressure gas precipitate into outside fusion tube from these gaps, the insulation property between the outside upper and lower copper casting of fusion tube is declined rapidly and causes failure of interruption; Or act in these gaps due to gas pressure, after making to bear excessive power between copper casting and fusion tube, upper copper casting is drawn out fusion tube, causes failure of interruption; Therefore urgently improve.

Summary of the invention

The purpose of this utility model is to provide a kind of fusing carrier of fuse switch, with prevention and the bond strength and the sealing that improve fusion tube when cut-offfing Short-Circuit High Current of fuse switch fusing carrier and upper and lower copper casting, replace the fusing carrier manufacturing process of traditional fuse switch, and to a certain degree increase connecting-disconnecting function and reduce manufacturing cost.

In order to achieve the above object, the utility model provides a kind of fuse switch fusing carrier, it is characterized in that, comprise blow-out ash vulcanized fiber tube, the two ends up and down of described blow-out ash vulcanized fiber tube are crimped together with upper copper internal lining pipe and lower copper casting respectively, the outside of described blow-out ash vulcanized fiber tube, upper copper internal lining pipe and lower copper casting is provided with epoxy resin impregnated glass fiber winding layer, is sealed between blow-out ash vulcanized fiber tube and upper copper internal lining pipe and between blow-out ash vulcanized fiber tube and lower copper casting by described epoxy resin impregnated glass fiber winding layer.

Preferably, the upper end of described upper copper internal lining pipe is threaded with fuse cap, and described lower copper casting and hinge are by being connected with elastic cylindrical pin.

Compared with prior art, the beneficial effects of the utility model are:

Structure of the present utility model is simple and easy to processing, improves break performance, reduces the possibility that lost efficacy, and reduces processing cost.

Accompanying drawing explanation

Fig. 1 is fuse switch fusing carrier structural representation.

Embodiment

Below in conjunction with specific embodiment, set forth the utility model further.

Embodiment

As shown in Figure 1, for fuse switch fusing carrier structural representation, described fuse switch fusing carrier comprises blow-out ash vulcanized fiber tube 4, the two ends up and down of described blow-out ash vulcanized fiber tube 4 are crimped together with upper copper internal lining pipe 2 and lower copper casting 3 respectively, the outside of described blow-out ash vulcanized fiber tube 4, upper copper internal lining pipe 2 and lower copper casting 3 is provided with epoxy resin impregnated glass fiber winding layer 5, is sealed between blow-out ash vulcanized fiber tube 4 and upper copper internal lining pipe 2 and between blow-out ash vulcanized fiber tube 4 and lower copper casting 3 by described epoxy resin impregnated glass fiber winding layer 5.The upper end of described upper copper internal lining pipe 2 is threaded with fuse cap 1, and described lower copper casting 3 and hinge 6 are by being connected with elastic cylindrical pin 7.

During installation, after upper copper internal lining pipe 2, lower copper casting 3 are crimped together with blow-out ash vulcanized fiber tube 4, are wrapped in outside its surface with epoxy resin impregnated glass fiber, form the sealed composite fusion tube of high strength; Upper internal lining pipe 2 upper end is threaded with fuse cap 1, and lower copper casting 3 other end is connected with hinge 6 elastic cylindrical pin 7 again.

During use, when experiencing short circuit interruption, the compound fusion tube formed by upper copper internal lining pipe 2, lower copper casting 3, blow-out ash vulcanized fiber tube 4, epoxy resin impregnated glass fiber winding layer 5 provides the space of high-intensity sealing, can effectively prevent to cut-off Leakage Gas, copper casting and fusion tube stressed the failure of interruption such as to be separated may.

Claims

1. a fuse switch fusing carrier, it is characterized in that, comprise blow-out ash vulcanized fiber tube (4), the two ends up and down of described blow-out ash vulcanized fiber tube (4) are crimped together with upper copper internal lining pipe (2) and lower copper casting (3) respectively, described blow-out ash vulcanized fiber tube (4), the outside of upper copper internal lining pipe (2) and lower copper casting (3) is provided with epoxy resin impregnated glass fiber winding layer (5), sealed by described epoxy resin impregnated glass fiber winding layer (5) between blow-out ash vulcanized fiber tube (4) and upper copper internal lining pipe (2) and between blow-out ash vulcanized fiber tube (4) and lower copper casting (3).

2. fuse switch fusing carrier as claimed in claim 1, it is characterized in that, the upper end of described upper copper internal lining pipe (2) is threaded with fuse cap (1), and described lower copper casting (3) and hinge (6) are by being connected with elastic cylindrical pin (7).