CN2119033U

CN2119033U - High voltage fuse

Info

Publication number: CN2119033U
Application number: CN 92224079
Authority: CN
Inventors: 马涌涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-11
Filing date: 1992-06-11
Publication date: 1992-10-14

Abstract

The utility model relates to a novel high voltage fuse for a high voltage switch, belonging to the technical field of high voltage switches for electric apparatus. The novel fuse is composed of a fuse tube, a fuse wire, a fuse body, an arc extinguishing tube, a rotating arc tube and an air conducting pipe. The two ends of the fuse body are respectively inserted into the fuse, and the arc extinguishing tube which is sheathed outside the fuse body is inserted into the rotating arc tube; one end of the rotating arc tube is connected with the air conducting pipe, and the other end is inserted into a moving contact; the rotating arc tube and the arc extinguishing tube are inserted into the fuse tube together. The utility model can be used for switching on and switching off short circuit electrical sources of more than 35KV, can be used for the fusing of small electrical current, and has the advantages of quick arc extinguishing speed, etc.

Description

High voltage fuse

The utility model relates to a kind of novel high-pressure fuse that is used for high-voltage switch gear, belongs to high voltage electrical apparatus technical field.

It is that U.S. Edison Co. produces that present high votage fuse has a kind of, its structure as shown in Figure 1, it is made up of parts such as fusion tube, fuse, wireway, blow-out pipe and copper pipes.Because its structural shortcoming, this fuse arc extinguishing speed is fast inadequately, and cut-offfing when not being suitable for little electric current.

The purpose of this utility model is a kind of being used under the high-pressure situations of design, to the high-tension fuse that large and small electric current all is suitable for, makes it rational in infrastructure, shortens the quenching time.

Content of the present utility model is high-tension fuse by fusion tube, fuse, melt, blow-out pipe, revolves the arc pipe and wireway is formed.Fuse lead-in wire is a copper wire pigtail of being weaved into by many copper wires, and the end is a copper rod, and melt is inserted and is welded in the copper rod, is that a bronze button covers on the moving contact inner hole wall topmost.The other end and the lead of fuse join, and the whole piece fuse is inserted in the wireway.The inwall of wireway is the shaped form of ellipse garden curve and the transition of hyperbola nature.The effect of wireway is to make a large amount of gases that produce behind the arc burning, under the effect of pressure, volume and temperature, makes gas reach ultrasonic speed.Electric arc very fast quilt under flowing fast of air-flow promptly brushed is blown out.The blow-out pipe is the garden pipe that red steel paper is done, and is equipped with perforation vertically in its side.This aperture helps under the little current conditions, and the blow-out pipe is abundant, conflagration and electric arc is extinguished fast.The blow-out pipe box is contained in and revolves arc pipe inside, and revolving the arc pipe is a brass tube, and close around enamelled wire in its outside, top and the bottom, are riveted on the copper pipe as terminals securely by two wire clips.The effect of revolving the arc pipe is to utilize under the effect in the Luo spool magnetic field of arc current generation, and arc current is placed at a high speed under the effect of the Lorentz force of Luo spool magnetic field generation, makes it be beneficial to extinguishing fast of electric arc.Revolve the arc pipe and be sleeved in the fusion tube, an end and wireway join, and the other end and moving contact join.

Description of drawings:

Fig. 1 is the prior art structure principle chart

Fig. 2 is the structure principle chart of an embodiment of the utility model

Below in conjunction with accompanying drawing, introduce an embodiment of the present utility model in detail.Fig. 1 is the structure principle chart of prior art, and 1 is fuse among the figure, the 2nd, and wireway, the 3rd, fusion tube, the 4th, the blow-out pipe, the 5th, copper pipe rises and strengthens protective effect, the 6th, melt.Fig. 2 is the structure principle chart of an embodiment of the utility model.1 is fuse among the figure, the 2nd, and wireway, the 3rd, fusion tube, the 4th, the blow-out pipe, the 6th, melt, the 7th, revolve the arc pipe, the 8th, copper rod is the part of fuse, the 9th, moving contact, the 10th, pressure releasing cap.Fuse 1 is inserted in the wireway 2, and wireway 2 is inserted in the fusion tube 3.The inwall of wireway is the curve pipe of ellipse garden curve and the transition of hyperbola nature.Its diameter of inner pipe is 14mm, and manufacture process is: with the copper rod that a diameter is 14mm, put in type plastic castings in the above, be shaped as ellipse garden and hyp intermediate shape, becoming the outside epoxy resin that twines of shape foundry goods to add glass fabric.Twine flat back and continue to twine with epoxy resin outside whole pipe to add glass fabric, totally 6 millimeters thick are put into baker, become the intensity of steel under the curing process of fiberglass, at last copper rod are taken out, and are wireway, and melt 6 joins with fuse 1, and stretches in the blow-out pipe 4.The both sides of blow-out pipe 4 are equipped with the perforation of a row φ 2 vertically, and it is inserted in revolves in the arc pipe 7.The end is with pressure releasing cap 10.Revolving arc pipe 7 is that a wall thickness is the brass tube of 4mm, close enamelled wire 60 circles in outside around φ 1, and top and the bottom, firmly are riveted on the copper pipe as terminals by two wire clips.The end and the wireway 2 that revolve arc pipe 7 join, and the other end and moving contact 9 join, and wholely revolve the arc pipe and wireway is sleeved in the fusion tube 3.

Claims

1, a kind of fuse that is used for high-voltage switch gear, comprise fusion tube, fuse, melt, blow-out pipe and wireway, it is characterized in that described fuse also comprises revolves the arc pipe, the inner wall shape of described wireway is the curve-like of ellipse garden curve and the transition of hyperbola nature, the described arc pipe that revolves is a brass tube, close in the outside of brass tube around enamelled wire, top and the bottom by a wire clip as terminals, firmly be riveted on the copper pipe, described blow-out pipe is equipped with perforation vertically in the side, described fuse is inserted in the wireway, and described melt is inserted in the blow-out pipe, the blow-out pipe is inserted in and revolves in the arc pipe, revolves arc pipe and wireway and is inserted in the fusion tube together.