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A fuse cutter and a novel drop fuse

A cutter and fuse technology, applied in the parts of protection switch, electrical components, protection switch operation/release mechanism, etc., can solve the problems of high cost of use, malfunction, device failure, etc., to achieve rapid response and increase speed and reliability, and the effect of avoiding reclosing failure

Pending Publication Date: 2019-01-04
中船安智(湖北)科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0008] The above-mentioned patent uses the power of gunpowder explosion to blow the fuse directly. Although this method is direct and fast, but the gunpowder is installed on the guide bar, under the influence of the electromagnetic field generated by the changing high current, it may cause the explosion of the gunpowder and cause malfunction. The guide bar will generate heat under the action of changing high current, and it may also cause the explosion of gunpowder, resulting in malfunction; the failure of the entire device, resulting in serious losses
The above-mentioned patent adopts the method of blasting and turning the guide row to form a fracture, which requires a large space, so the product is too large
In addition, after the switch is exploded, the entire switch needs to be replaced, and the cost of use is too high

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0033] It is a drop-out fuse used on the side of 10kV distribution lines and distribution transformers for protection and equipment switching and switching operations, including fuse cutter 1, starting circuit 4, and current sensor 3, as a traditional drop-out fuse The breaking unit 5, the fuse 2, and the fuse pipe 13, the fuse 2 passes through the fuse pipe 13, and the fuse pipe 13 passes through the fuse cutter.

[0034] The fuse cutter 1 includes a cylinder 8, and the cylinder is respectively provided with a pressure ring 9, a gas generator 10, a piston 7, and a ceramic cutting knife 11 from left to right, and the ceramic base 12 is provided with a cavity for the ceramic cutting knife to move. The left end of the base body 12 is provided with a step end face, and a cushion pad 14 is provided on the step end face, and a buffer pad 14 is also installed at the right end of the cavity of the base body. The through hole through which the pipe 13 passes, the shear pin 6 of the en...

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PUM

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Abstract

The invention relates to a fuse cutter and a novel drop fuse, the novel drop fuse comprises a circuit breaker unit, Fuse, fuse cutter, includes a fuse cutter base, the substrate is provided with a through hole through which the fuse can pass, characterized in that an air cylinder is arranged on the left side of the base body, a piston, a cutting knife is arranged at the end of the piston, a cavitywhich can be moved by the cutting knife is arranged in the base body, a gas generator is also arranged at the bottom of the cylinder, the cutting knife and the base body are made of insulating material, and the gas generator is started by a starting unit. The invention has the advantages of simple structure, reliable operation and instantaneous circuit breakage.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a fuse cutter and a drop-out fuse. Background technique [0002] The drop-out fuse is installed on the branch line of the 10kV distribution line, which can reduce the scope of power outages. Because it has an obvious disconnection point, it has the function of an isolating switch, creating a safe operating environment for the lines and equipment in the maintenance section, and improving The safety of maintenance personnel. Installed on the distribution transformer, it can be used as the main protection of the distribution transformer, and is widely used in 10kV distribution lines and distribution transformers. [0003] The working principle of the ordinary drop-out fuse is that the moving contacts at both ends of the fuse tube are fastened by the fuse (melt), and after the upper moving contact is pushed into the protruding part of the "duckbill", the upper contact made of phosphor copper she...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/00H01H85/38H01H71/12H01H39/00
CPCH01H39/00H01H71/122H01H85/0043H01H85/38H01H2085/388
Inventor 石清元黄生华王国博许三祥丁建龙贾云东蔡昊
Owner 中船安智(湖北)科技有限公司
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