CN2593348Y - Bured oil-immersed high-voltage current-limiting fuse - Google Patents

Abstract

The utility model discloses a buried oil-immersed high-voltage current-limiting fuse. A supporting component in the fuse is a hollow cylinder which can be used for containing a fusing component and a handle, wherein, one end of the cylinder is sealed, the other end is open, the port of the open end is inlaid with a sealing ring, and the cylinder is provided with two conducting rings with an interval; the interior of the fusing component is provided with a frame which is wound with melt, and both ends of the fusing component are provided with metal caps; the handle comprises a catch, an insulator, and a supporting frame which can be used for containing the fusing component, and the catch, the insulator, and the supporting frame which can be used for containing the fusing component are connected into integration. When the fuse is arranged in a transformer box, the supporting component is used for completely separating the fusing component and external transformer oil; the utility model can be used in an atmospheric environment, can be used in transformer oil, the operating environment is enlarged, and thus the miniaturization and the diversification of the installation form of a high-voltage packaged unit are realized, and the utility model is suitable for requirements of American box-type combination transformers.

Description

Be used for buried oil immersion type high-voltage and current-limitation fuse

Technical field

The utility model relates to High-Voltage Electrical Appliances, particularly a kind ofly is used for buried oil immersion type high-voltage and current-limitation fuse.

Background technology

The at present domestic environment for use that is used for the high-voltage and current-limitation fuse that the power transformer error protection uses all can only can not immerse in the transformer oil under atmospheric environment; Between phase and phase distance was bigger when high-voltage and current-limitation fuse was installed, and had greatly limited the development of European case break-in miniaturization.Along with promoting the use of of American box combined transformer, this traditional fuse can not satisfy the requirement of American box combined transformer, because American box combined transformer requires used high-voltage and current-limitation fuse to be necessary for oil immersed type, can imbed underground, as buried oil-immersed and high-voltage fuse the sealing and the volume of oil seal and water all there is very high specific (special) requirements, that is, sealing will be got well, volume is as far as possible little.Therefore, the present domestic high-voltage and current-limitation fuse that the power transformer error protection is used that is used for because of its volume is big, poor sealing, has greatly limited the development of high pressure the complete sets of equipment to miniaturization, the requirement of the American box combined transformer of incompatibility.

Summary of the invention

The purpose of this utility model provides the buried oil immersion type high-voltage and current-limitation fuse that is used for of the little and good airproof performance of a kind of volume, with the requirement of the American box combined transformer that adapts to different environments for use, for the high pressure the complete sets of equipment provide the basis to the miniaturization development.

For achieving the above object, the utility model adopts following technical scheme:

This is used for buried oil immersion type high-voltage and current-limitation fuse and comprises supporter, fuse member, handle,

Described supporter is the hollow cylinder of the ccontaining fuse member of an energy, handle, and an end of cylinder is a closed, and the other end is the opening shape, and the port phase embedding sealing ring of opening one end is interval with two conducting rings on the cylinder;

Described fuse member is built-in with skeleton, is wound with melt on the skeleton, and the fuse member two ends are equipped with metal cap;

Described handle comprises handle, insulator, support that can ccontaining fuse member, and handle, insulator, support that can ccontaining fuse-link connect as one.

Described fuse member two ends also are provided with fixed leg;

Also be filled with quartz sand 25 in the described fuse member 20.

The support of described fuse member is the contact base that two ends all can make the fixed leg at fuse member two ends insert, and an inner side of each contact base respectively is provided with a spring, and spring is connected with contact base respectively.

Also be arranged with protective cover on the described handle.

Because the utility model has adopted above-mentioned technical scheme, in this fuse, supporter is the hollow cylinder of the ccontaining fuse member of an energy, handle, one end of cylinder is a closed, the other end is the opening shape, and the port phase embedding sealing ring of opening one end is interval with two conducting rings on the cylinder; Fuse member is built-in with skeleton, is wound with melt on the skeleton, and the fuse member two ends are equipped with metal cap; Handle comprises handle, insulator, support that can ccontaining fuse member, and handle, insulator, support that can ccontaining fuse-link connect as one.When this fuse is placed in the transformer tank, the supporter of fuse separates fuse member and outside transformer oil fully; The setting of O-ring seals and protective cover, make its environment for use both can be in atmospheric environment, again can be in transformer oil, enlarged the environment for use of high-voltage and current-limitation fuse, can be embedded in underground, therefore, make miniaturization, the installation form variation of high pressure the complete sets of equipment, adapted to the requirement of American box combined transformer.

Description of drawings

Fig. 1 is the utility model fuse structure schematic diagram.

Fig. 2 is the utility model supporter structural representation.

Fig. 3 is the structure enlarged diagram of the utility model fuse member.

Fig. 4 is the utility model handle arrangement enlarged diagram.

Embodiment

Please consult Fig. 1, shown in Figure 2 earlier, high-voltage and current-limitation fuse of the present utility model comprises supporter 10, fuse member 20, handle 30,

Supporter 10 is the hollow cylinder of the ccontaining fuse member 20 of an energy, handle 30, be interval with two conducting rings 11,12 on the supporter 10, an end of supporter 10 is a closed, and the other end is the opening shape, nearly openend is provided with pedestal 13, and the port of opening one end is phase embedding O-ring seals 14 also.

Please cooperate Fig. 3, Fig. 4 more respectively, fuse member 20 is built-in with skeleton 21, evenly is wound with melt 22 on the skeleton 21, and fuse member 20 two ends are equipped with metal cap 23, also is filled with quartz sand 25 in the fuse member 20.

Handle 30 comprises handle 31, insulator 32, support 33 that can ccontaining fuse member 20 successively, and handle 31, insulator 32, support 33 that can ccontaining fuse member 20 can connect as one.

Fuse member 20 is in the support 33 of the fuse member that fixedly places handle, and fuse member 20, handle 30 all place in the supporter 10.

Described fuse member 20 two ends also are provided with fixed leg 24, the contact base 331 that insert for the fixed leg 24 that can make the fuse member two ends at support 33 two ends of described handle 30, two contact bases, 331 inboards respectively are provided with 332, two springs 332 of a spring and are connected with contact base 331 respectively.

Please, also be arranged with protective cover 34 on the handle 31 of described handle 30 again in conjunction with shown in Figure 1.

When in the support 33 of fuse member 20 being inserted handle 30, two fixed legs 24 insert respectively in the contact base 331, and then fuse member 20, handle 30 inserted in the supporter 10 jointly, at this moment, the spring 332 in the support 33 contacts with conducting ring 11,12 on the supporter 10.

Handle 30 that becomes one and fuse member 20 are placed O-ring seals 14 at pedestal 13 ports of supporter 10 earlier before inserting supporter 10, insert in the supporter 10 again, screw in protective cover 34.

When this oil immersion type high-voltage and current-limitation fuse is used for when buried, pedestal 13 right-hand members of supporter 10 have guaranteed that transformer oil can not enter in the fuse member 20, fuse member 20 is isolated fully with transformer oil, has only handle 31 in the handle 30 outside supporter 10, in the time will changing fuse member 20, only need hold the handle 31 of handle 30 and pull out promptly replaceable.After the replacing, the handle 31 of holding handle 30 inserts in the supporter 10, and screw-in protective cover 34 is also tightened, and has guaranteed that water can not enter in the supporter 10.25 of the quartz sands of establishing of filling out guarantee can effectively cut-off when melt 22 disconnects in the fuse 20.The maximum drop-out current of this fuse can reach the requirement of backup protection fully up to 16kA.

The compact conformation of fuse of the present utility model, volume is little, environment for use both can be in atmospheric environment, again can be in transformer oil, and the part that exposes after installing also has the sealing of waterproof, has enlarged the environment for use of high-voltage and current-limitation fuse, therefore, make miniaturization, the installation form variation of high pressure the complete sets of equipment, can be embedded in underground.

Claims (4)

1, a kind ofly be used for buried oil immersion type high-voltage and current-limitation fuse, it is characterized in that: this fuse comprises supporter, fuse member, handle,

Described supporter is the hollow cylinder of the ccontaining fuse member of an energy, handle, and an end of cylinder is a closed, and the other end is the opening shape, and the port phase embedding sealing ring of opening one end is interval with two conducting rings on the cylinder;

Described fuse member is built-in with skeleton, is wound with melt on the skeleton, and the fuse member two ends are equipped with metal cap;

Described handle comprises handle, insulator, support that can ccontaining fuse member, and handle, insulator, support that can ccontaining fuse-link connect as one.

2, as claimed in claim 1ly be used for buried oil immersion type high-voltage and current-limitation fuse, it is characterized in that:

Described fuse member two ends also are provided with fixed leg;

Described fuse member also is filled with quartz sand in (20).

3, as claimed in claim 1 or 2ly be used for buried oil immersion type high-voltage and current-limitation fuse, it is characterized in that:

The support of described fuse member is the contact base that two ends all can make the fixed leg at fuse member two ends insert, and an inner side of each contact base respectively is provided with a spring, and spring is connected with contact base respectively.

4, as claimed in claim 1ly be used for buried oil immersion type high-voltage and current-limitation fuse, it is characterized in that:

Also be arranged with protective cover on the described handle.

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