Fuse for power distribution system

A technology for power distribution systems and fuses, which are used in circuits, electrical components, emergency protection devices, etc.

Inactive Publication Date: 2021-05-18
孙贵现
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of existing fuses proposed in the background technology, the present invention provides a fuse for power distribution systems, which has the advantages of enhancing arc extinguishing efficiency and disconnecting line efficiency, and solves the problems in the above background technology. technical issues raised

Method used

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  • Fuse for power distribution system
  • Fuse for power distribution system
  • Fuse for power distribution system

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] see Figure 1-3 , a fuse for a power distribution system, comprising an insulator 1, a bottom end of one side of the insulator 1 is fixedly connected with a lower static contact 2, and one side of the lower static contact 2 is movably clamped with a lower movable contact 3, The top of the lower moving contact 3 is fixedly connected with the fuse tube 4, and the inside of the fuse tube 4 is movably connected with the fuse assembly 5, and the top of the f...

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Abstract

The invention relates to the technical field of fuses, and discloses a fuse for a power distribution system. The fuse comprises an insulating part, a lower static contact is fixedly connected to the bottom end of one side of the insulating part, a lower moving contact is movably clamped to one side of the lower static contact, and a fusion tube is fixedly connected to the top end of the lower moving contact. A fuse wire assembly is movably connected in the fusion tube, the top end of the fuse wire assembly is in threaded connection with an upper moving contact, a support is fixedly connected to the top end of one side of the insulating part, an auxiliary hook is fixedly connected to the bottom end of one side of the support, and a contact spring is fixedly connected to one side of the support. The bottom end of the contact spring is fixedly connected with an abutting sheet, and the middle part of the inner side of the fusion tube is fixedly connected with an elastic plate. High pressure is formed through high temperature generated by fusing of the fuse assembly and gas generated by decomposition of the fuse assembly, so that the led-out insulating oil is heated to be decomposed and blown to the direction perpendicular to the electric arc, transverse blowing and longitudinal blowing can be combined, and the arc extinguishing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of fuses, in particular to a fuse for a power distribution system. Background technique [0002] A fuse is a device that uses a metal conductor as a melt in series in a circuit. When a short circuit or an overload current passes through the melt, it will fuse due to self-heating, thereby breaking the circuit. According to the structure, fuses can be divided into open type, semi-closed type, tube type and jet type fuses, while jet type fuses put the melt in the fusion tube made of solid gas-generating material, when the short-circuit current passes through the melt , the melt immediately fuses to generate an arc, and the high-temperature arc quickly decomposes the solid gas-producing material to generate a large amount of high-pressure gas, so that the ionized gas is ejected at both ends of the tube with an arc, and the arc is extinguished when the AC current crosses zero to break the current. When the upper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/42H01H85/38H01H85/20
CPCH01H85/20H01H85/38H01H85/42
Inventor 孙贵现
Owner 孙贵现
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