CN202196736U

CN202196736U - Fuse for solar energy generating device

Info

Publication number: CN202196736U
Application number: CN2011202441439U
Authority: CN
Inventors: 林海鸥; 吴辉; 林璇
Original assignee: SHANGHAI ELECTRIC CERAMIC WORKS CO Ltd
Current assignee: SHANGHAI ELECTRIC CERAMIC WORKS CO Ltd
Priority date: 2011-07-12
Filing date: 2011-07-12
Publication date: 2012-04-18
Anticipated expiration: 2021-07-12

Abstract

Disclosed is a fuse for a solar energy generating device, comprising a pedestal, a fuse body, and a fuse holder. The fuse body comprises a fusion tube, a pair of binding posts, several sheets of melt, and an arc extinguishing medium, wherein the pair of binding posts comprise an inner cap and an outer cap respectively, with the inner cap and the outer cap sequentially enveloping the ends of the fusion tube; the end face of the inner cap is provided with a plurality of through holes corresponding to the arrangement of a plurality of melts and the cross section of each melt; the melts are axially arranged at the central section of the inner chamber of the fusion tube in a side-by-side manner; two heads of each melt pass through the through holes of the inner cap and are fixedly connected with the inner cap via spot welding and electrically contact with the inner cap; the surface of each melt is provided with multiple rows of narrow necks in a spaced manner along the length direction, with the width of the narrow necks of each row being Delta; the fuse holder comprises a dust-proof cap, a handle arranged at the upper end face of the central section of the dust-proof cap, and a pair of suspension rings connected to the lower end face of the central section of the dust-proof cap; and the fuse body is transversely suspended upon the fuse holder and then is placed upon the pedestal.

Description

A kind of fuse that is used for solar power plant

Technical field

The utility model relates to a kind of fuse that is used for solar power plant.

Background technology

Protective device as various electronic electric equipments; Fuse is a kind of traditional devices of technology maturation; Have advantages such as simple in structure, dependable performance, in every profession and trade, be widely used in the protection of various device, develop specially to the concrete equipment of various differences; Like motor, frequency converter etc., the various classifications of protecting.At present; Common fuse generally includes fusion tube, be located at some melts in the fusion tube and be located at the binding post at fusion tube two ends; Fill with quartz sand in the fusion tube, be processed with preset narrow (narrow neck) on the every melt, and be furnished with mounting seat according to practical requirements.When fault current passes through melt; The higher narrow neck position of resistance is heated rapidly through heating effect of current, and local temperature raises rapidly, and final melt fuses in narrow neck position; With the thorough disjunction of fault current, thus other device on the protective circuit not the failover electric current suffer damage.In the emerging solar photovoltaic technology, the fuse that the protection of related device needs high dc rated voltage, small rated currents, disjunction to be swift in motion.But the kind of fuse that can satisfy these requirements at present is few, is mostly external imported product, and all can only protects short circuit current mostly, timely disengagement failure circuit when system overload.

Summary of the invention

The purpose of the utility model is in order to overcome the deficiency of prior art, a kind of fuse that is used for solar power plant to be provided, and its operating chacteristics is stable; Disjunction is swift in motion; Protection to circuit is more reliable, the rated voltage of the highest applicable direct current 1000V, the occasion of 1A to 16A.

The technical scheme that realizes above-mentioned purpose is: a kind of fuse that is used for solar power plant; Comprise a base, a fuse-link and a fusing carrier; Said fuse-link comprises fusion tube, a pair of binding post and some melt and arc-extinguishing mediums that are located in the fusion tube that are connected to the fusion tube two ends; Wherein, Said base comprises the junction block container cavity that a fuse-link container cavity and two are positioned at outside the two ends of fuse-link container cavity and the bottom is communicated with the fuse-link container cavity, and the socket that a pair of outer end has tension disc is installed on the base plate of said fuse-link container cavity, and configuration one clamps spring on each socket; In said two junction block container cavities a junction block is installed respectively, the tension disc that these two junction blocks pass through respectively on the said socket in a screw and the insertion junction block is connected; Cap and outer cap in said pair of terminals comprises respectively, said in cap and outer cap successively big envelope in the termination of said fusion tube; The arrangement mode of corresponding some melts and the cross sectional shape of every melt are offered some perforation on the end face of said interior cap; Said some melts with side by side mode axially place the inner chamber central authorities of said fusion tube, two of every melt pass said in cap perforation and be fixedly connected with said interior cap and electrically contact through spot welding; On the surface of said every melt along its length the compartment of terrain the narrow neck of multiple row is set, each minimum widith that is listed as narrow neck is δ; Said fusing carrier comprises that a dust cap, is located at the handle and a pair of lower surface, middle part of dust cap and the adaptive suspension ring of external diameter of internal diameter and said fusion tube of being connected of the upper surface, middle part of dust cap; Said fuse-link is placed in the fuse-link container cavity of said base on said fusing carrier and is inserted on the said socket by lateral suspension.

The above-mentioned fuse that is used for solar power plant, wherein, the quantity that each on the said melt is listed as narrow neck is one, this narrow neck is between the semi arch breach of two widthwise edges that are opened in said melt respectively.

The above-mentioned fuse that is used for solar power plant wherein, also is provided with a liner between the end face of said interior cap and the end face of outer cap.

The fuse that is used for solar power plant of the utility model is compared prior art and is had following characteristics:

1) specially to the energy photovoltaic device design, protective value is more outstanding than fuse for general application;

2) operating chacteristics is stable, and disjunction is swift in motion, and is more reliable to the protection of circuit;

3) on melt, add the metallurgical effect point, can realize the omnibearing protection of short circuit and overload;

4) adopt No. 95 aluminium oxide ceramics as fusion tube, make the profile of fuse-link more attractive in appearance;

5) though this fuse is to develop to solar photovoltaic electrification component, also can be common to other circuit that voltage and current is no more than the fuse-link rated value, as the general protection equipment of semiconductor equipment.

Description of drawings

Fig. 1 is the structural representation of the fuse that is used for solar power plant of the utility model;

Fig. 2 is the structural representation of the fuse fuse-link that is used for solar power plant of the utility model.

Embodiment

In order to understand the technical scheme of the utility model better, below through concrete embodiment and combine accompanying drawing to be elaborated:

See also Fig. 1 and Fig. 2, a kind of fuse that is used for solar power plant of the utility model comprises a base 1, a fuse-link 2 and a fusing carrier 3.

Base 1 comprises a fuse-link container cavity 11 and two junction block container cavities 12, and wherein, fuse-link container cavity 1 is positioned at the middle part of base, and two junction block container cavities 12 are positioned at the outer and bottom of the right ends of fuse-link container cavity 11 and are communicated with fuse-link container cavity 11; The socket 14 that a pair of outer end has tension disc 13 is installed on the base plate of fuse-link container cavity 11, and configuration one clamps spring 15 on each socket 13; One junction block 16 is installed respectively in two junction block container cavities 12, and the tension disc 13 on the socket 13 in these two junction blocks 16 pass through a screw 17 respectively and insert junction block 16 is connected.

Fuse-link 2 comprises fusion tube 21, some melts 22, arc-extinguishing medium 23, pair of terminals and two liners 26; Wherein, Some melts 22 axially place the inner chamber central authorities of fusion tube 21 with mode side by side, on the surface of every melt 22 along its length the compartment of terrain the narrow neck 220 of multiple row is set, each quantity that is listed as narrow neck 220 is one; The minimum widith of narrow neck 220 is δ, and this narrow neck 220 is between the semi arch breach of two widthwise edges that are opened in melt 22 respectively; Arc-extinguishing medium 23 is filled in fusion tube 21 inner chambers; Cap 24 and outer cap 25 in pair of terminals comprises respectively, interior cap 24 and outer cap 25 successively big envelope in the termination of fusion tube 21; The cross sectional shape of the arrangement mode of corresponding some melts 22 and every melt 22 is offered some perforation on the end face of interior cap 24 so that two of every melt 22 pass in cap 24 perforation and be fixedly connected with interior cap 24 and electrically contact through spot welding; In liner 26 is located between the inner face of outer face and the outer cap 25 of cap 24.

Fusing carrier 3 comprises a dust cap 31, a handle 32 and a pair of suspension ring 33, wherein, and the shape adaptation of the fuse-link container cavity 11 of the shape of dust cap 31 and base 1; Handle 31 is located at the upper surface, middle part of dust cap 31; It is adaptive that a pair of suspension ring 33 are connected the external diameter of lower surface, middle part and internal diameter and fusion tube 21 of dust cap 31.

A kind of mounting means that is used for the fuse of solar power plant of the utility model is: fuse-link 2 is placed on the fuse-link container cavity 11 of base 1 on fusing carrier 3 by lateral suspension; And the binding post of fuse-link 2 two ends is inserted on the socket 13, and this moment, dust cap 31 covered fuse-link container cavity 11 openends.Fuse-link 2 clamps to guarantee reliable electrical contact by clamping spring 15; The lead 4 that links to each other with external equipment is compressed by screw 17 after inserting the below of the tension disc 13 that is positioned at junction block 16 from the hole of the right ends of base 1 respectively, guarantees that reliable mechanical fixes and electrically contact.

A kind of fuse that is used for solar power plant of the utility model can respond rapidly in order to guarantee 2 pairs of fault currents of fuse-link; Melt 22 all adopts the fine silver of 99.9% content as material, and makes the metallurgical effect point that some narrow necks 220 are used for overload protection above that.In addition, fusion tube adopts No. 95 aluminium oxide ceramics as material, and this material not only has good high temperature resistant, corrosion-resistant and insulation property, and outward appearance is also comparatively attractive in appearance.

Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the utility model; And be not the qualification that is used as the utility model; As long as in the connotation scope of the utility model, all will drop in claims scope of the utility model variation, the modification of the above embodiment.

Claims

1. fuse that is used for solar power plant; Comprise a base, a fuse-link and a fusing carrier; Said fuse-link comprises fusion tube, a pair of binding post and some melt and arc-extinguishing mediums that are located in the fusion tube that are connected to the fusion tube two ends, it is characterized in that

Said base comprises the junction block container cavity that a fuse-link container cavity and two are positioned at outside the two ends of fuse-link container cavity and the bottom is communicated with the fuse-link container cavity; The socket that a pair of outer end has tension disc is installed on the base plate of said fuse-link container cavity; Configuration one clamps spring on each socket; In said two junction block container cavities a junction block is installed respectively, the tension disc that these two junction blocks pass through respectively on the said socket in a screw and the insertion junction block is connected;

Cap and outer cap in said pair of terminals comprises respectively, said in cap and outer cap successively big envelope in the termination of said fusion tube; The arrangement mode of corresponding some melts and the cross sectional shape of every melt are offered some perforation on the end face of said interior cap;

Said some melts with side by side mode axially place the inner chamber central authorities of said fusion tube, two of every melt pass said in cap perforation and be fixedly connected with said interior cap and electrically contact through spot welding;

On the surface of said every melt along its length the compartment of terrain the narrow neck of multiple row is set, each minimum widith that is listed as narrow neck is δ;

Said fusing carrier comprises that a dust cap, is located at the handle and a pair of lower surface, middle part of dust cap and the adaptive suspension ring of external diameter of internal diameter and said fusion tube of being connected of the upper surface, middle part of dust cap;

Said fuse-link is placed in the fuse-link container cavity of said base on said fusing carrier and is inserted on the said socket by lateral suspension.

2. the fuse that is used for solar power plant according to claim 1; It is characterized in that; The quantity that on the said melt each is listed as on the narrow neck is one, and this narrow neck is between the semi arch breach of two widthwise edges that are opened in said melt respectively.

3. the fuse that is used for solar power plant according to claim 1 is characterized in that, also is provided with a liner between the end face of said interior cap and the end face of outer cap.