CN2567761Y

CN2567761Y - Suspension-mark type compound high-tension fuse

Info

Publication number: CN2567761Y
Application number: CN 02246687
Authority: CN
Inventors: 方耀益
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-22
Filing date: 2002-08-22
Publication date: 2003-08-20
Anticipated expiration: 2012-08-22

Abstract

The utility model relates to a suspension-mark type compound high-tension fuse, which comprises a high-tension porcelain sleeve, a fusion tube, an upper plug, an upper cutting sleeve, a lower plug, a lower cutting seat, a fixing frame and a suspension mark, wherein, the fusion tube penetrates through the high-tension porcelain sleeve. The fuse is provided with the structure of double dot break and double interval; the fusion tube is a composite fusion tube with a double-layer structure; the outer layer of the fusion tube is a stable insulating layer, and the inner layer is a heating gasified insulating layer; fuse wire passes through the inner layer and is connected with both ends of the fusion tube. The utility model adopts a compound draft tube which divides an electrical arc into two segments in fusion, can extinguish the electrical arc quickly, and can overcome the short circuit phenomenon of the electrical arc and light in the combination operation. Due to the adoption of an upper plug hood, the upper plug can avoid being exposed directly in the air; the pollution of contacts by wind, sand, rain and snow can be reduced; the phenomena can be eliminated that the suspension mark in the fusion tube falls to break under the influence of adverse weather.

Description

Suspention-mark type composite high pressure fuse

Technical field:

The utility model relates to a kind of suspention-mark type composite high pressure fuse, is meant a kind of high-tension fuse that compound fusion tube is set in porcelain tube especially; Arc extinguishing rapidly, moment disconnects, and belongs to power transmitting device

Technical field.

Background technology:

At present, in electrical power transmission system, normally used is fuse switch.This fuse exists that arc extinction performance is poor, fuse tube exposes, the shortcoming of complicated operation; Comparatively abominable at the northern area of China outdoor environment, the pollution of thunder and lightning, dust storm and environment has brought extremely adverse influence to the normal use of fuse.

China's utility model patent 95200810.6 discloses a kind of suspention-mark type high-tension fuse, and the mozzle that this fuse will be equiped with fuse is arranged in the high voltage porcelain bushing pipe, and is simple to operate, and safer.But, remain in this utility model in following defective:

1, still adopt traditional mozzle, arc extinguishing speed is slower;

2, when drawing is operated, can't overcome the phenomenon of arc short-circuit;

Though 3, the last plug of this fuse is provided with rain cover, go up plug and expose basically among air, can't resist the pollution of wind, sand, rain, snow to the contact, can't eliminate fully under the influence because of the strong wind heavy weather, the outstanding mark in the fusion tube falls the disconnection phenomenon.

The utility model content:

Main purpose of the present utility model is to provide a kind of suspention-mark type composite high pressure fuse, adopts compound fusion tube, promptly, the fusion tube body is provided with two insulating barriers, and during fusing, insulating barrier inboard under the effect of heat is vaporized rapidly, produce the arc blow-out effect, rapidly arc extinguishing.

Another purpose of the present utility model is to provide a kind of suspention-mark type composite high pressure fuse, and the design that it adopts two point to disconnect can be divided into electric arc two sections, the arc short-circuit phenomenon when overcoming the drawing operation.

Another purpose of the present utility model is to provide a kind of suspention-mark type composite high pressure fuse, it adopts plug shroud, avoids plug directly to expose among air, reduces the pollution to the contact of wind, sand, rain, snow, elimination is under the influence of heavy weather, and the outstanding mark in the fusion tube falls the disconnection phenomenon.

The purpose of this utility model is achieved in that

1, a kind of suspention-mark type composite high pressure fuse comprises: high voltage porcelain bushing, fusion tube, go up plug, down plug, go up cutting ferrule, deck, support, fixed mount and outstanding mark down, fusion tube is located in the high voltage porcelain bushing, its upper end is connected with last plug, the lower end is connected to down plug; Last plug inserts goes up cutting ferrule, and following plug is connected to down deck, and outstanding target heterodoxy is connected with following plug, and the other end is connected with fusion tube, and high voltage porcelain bushing is connected and fixed by clip and support, fixed mount; It is characterized in that: this fusion tube is for having double-deck compound fusion tube, and its skin is the stable insulation layer, and its internal layer passes the two ends that internal layer is connected to fusion tube for the vaporization insulating barrier that is heated, fuse.

The following plug of this fusion tube is clamping or grafting with following deck.

Described stable insulation layer is the epoxy resin material.

The described vaporization insulating barrier that is heated is that zinc chloride adds hydrochloric acid mixture.

Described going up on the cutting ferrule also is provided with the last plug shroud that is used to seal plug and last cutting ferrule, and plug shroud is fixed on the upper end of high voltage porcelain bushing on this by clip.

The utility model adopts compound fusion tube, that is, the fusion tube body is provided with two insulating barriers, and during fusing, insulating barrier inboard under the effect of heat is vaporized rapidly, produces the arc blow-out effect, has reached the effect of rapid arc extinguishing.In addition, the design that it adopts two point to disconnect can be divided into electric arc two sections, has overcome the arc short-circuit phenomenon when drawing is operated.The utility model adopt to be gone up plug shroud, avoided last plug directly to expose among air, has reduced the pollution to the contact of wind, sand, rain, snow, has eliminated under the influence of heavy weather, and the outstanding mark in the fusion tube falls the disconnection phenomenon.

Description of drawings:

Fig. 1 is an overall structure schematic diagram of the present utility model.

Fig. 2 pulls out view for compound fusion tube of the present utility model.

Fig. 3 is the structural representation of compound fusion tube of the present utility model.

Embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:

Referring to Fig. 1 and Fig. 2, the utility model comprises: high voltage porcelain bushing 11, fusion tube 9, go up plug 1, go up cutting ferrule 2, plug 13, deck 12, fixed mount 8 and outstanding mark 14 down down, fusion tube 9 is located in the high voltage porcelain bushing 11, and its upper end is connected with last plug 1, and the lower end is connected to down plug 13; Last plug inserts goes up cutting ferrule 2, and following plug is plugged into down deck 12, and outstanding mark 14 is connected with following plug 13, and high voltage porcelain bushing 11 is connected and fixed by clip 4 and fixed mount 8; This fuse has two point and disconnects and the double gap structure, that is: the following plug 13 of this fuse is an engagement connection with following deck 12; When drawing back or slippage this fusion tube 9, plug 1 disconnects with last cutting ferrule 2 or is connected on it; Simultaneously, following plug 13 is connected with following deck 12 or disconnects, therefore producing the gap simultaneously between last plug 1 and the last cutting ferrule 2 and between following plug 13 and the following deck 12, that is: electric arc is divided into upper and lower two, for an electric arc of prior art, two electric arcs of two gap generations are easy to blow disconnected more, reach the purpose of rapid arc extinguishing.

Referring to Fig. 2, Fig. 3, this fusion tube 9 is for having double-deck compound fusion tube, and its skin is a stable insulation layer 91, and its internal layer is the vaporization insulating barrier 92 that is heated, and fuse 93 passes the two ends that internal layer is connected to fusion tube 9.Compound fusion tube 9 is located in the high voltage porcelain bushing 11, when accidents such as overload or short circuit take place, fuse 93 produces a large amount of heats, the feasible vaporization insulating barrier 92 rapid vaporizations of being heated of this heat, under the effect of arc blow-out mechanism, in the electric arc that produces when rapidly fuse 93 being disconnected of compound fusion tube 9 blow disconnectedly, reaching arc extinguishing and moment cut-offs.Simultaneously, because this compound fusion tube employing is the function that two point disconnects, what promptly adopt is the double gap structure, when drawing is operated, an arc can be divided into two sections like this, and arc extinction performance is good.Simultaneously, because this compound fusion tube is plugged in the high voltage porcelain bushing 11, so just fully solved the arc short-circuit phenomenon in the drawing operation.

Referring to Fig. 1 and Fig. 2, of the present utility model going up on the cutting ferrule 2 also is provided with the last plug shroud 3 that is used to seal plug 1 and last cutting ferrule 2 again, and plug shroud 3 is fixed on the upper end of high voltage porcelain bushing 11 on this by clip 4.After the sealing, wind resistance of the present utility model, sand, rain, snow ability are strong, have avoided the pollution of sand and dust to the contact, and have eliminated fully under the influence of strong wind heavy weather like this, and the outstanding mark 14 in the fusion tube 9 falls the phenomenon of disconnection.

It should be noted last that, above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or replacement to the utility model with being equal to; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

2, suspention-mark type composite high pressure fuse according to claim 1 is characterized in that: the following plug of this fuse is clamping or grafting with following deck.

3, suspention-mark type composite high pressure fuse according to claim 1, it is characterized in that: described stable insulation layer is the epoxy resin material.

4, suspention-mark type composite high pressure fuse according to claim 1 is characterized in that: the described vaporization insulating barrier that is heated is that zinc chloride adds hydrochloric acid mixture.

5, suspention-mark type composite high pressure fuse according to claim 1 is characterized in that: described going up on the cutting ferrule also is provided with the last plug shroud that is used to seal plug and last cutting ferrule, and plug shroud is fixed on the upper end of high voltage porcelain bushing on this by clip.