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High-adaptability drop-out fuse

A drop-out fuse, an adaptive technology, applied in the direction of emergency protection devices, circuits, electrical components, etc., can solve the problems that the fuse tube hinders the action, and the fuse tube is not easy to pass through the windshield.

Pending Publication Date: 2022-03-25
国网河北省电力有限公司元氏县供电分公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the windshield of this solution completely wraps the fuse tube, and there is a problem that it is difficult to pass through the windshield when the fuse tube is turned up after installation, and it also hinders its movement when the fuse tube needs to be turned down after the fuse is triggered.

Method used

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  • High-adaptability drop-out fuse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, the highly adaptable drop-out fuse of this embodiment includes a mounting plate 15, an upper connecting plate 2, a lower connecting plate 12, a fuse tube 9 and a windshield, and the upper side of the mounting plate 15 is fixedly connected to the upper connecting plate through an insulator 14. Plate 2, the lower side of the mounting plate 15 is fixedly connected to the lower connecting plate 12 through the insulator 14, the upper connecting plate 2 is provided with the upper connection terminal 1 and the upper static contact 4 which is elastic because of the spring, and the lower connecting plate 12 is provided with the lower connecting plate 12. The connecting terminal 13 and the hook-shaped lower static contact 10, the fuse tube 9 has an upper movable contact and a shaft-shaped lower movable contact 11, the upper movable contact is clamped with the upper static contact 4, and the lower The hook portion of the moving contact 11 is clamped with...

Embodiment 2

[0044] Such as image 3 As shown, the present embodiment is substantially the same as the previous embodiment, except that the top of the upper windshield 7 is fixedly connected to the upper connecting plate 2, and the two straight sections 17 at the top of the upper windshield 7 are provided with facing In the open section 18 of the outer flaring, the upper static contact 4 is located in the top of the upper windshield 7 , and the open section 18 is below the upper static contact 4 . After setting like this, the top of the upper connecting plate 2 is further fixed, ensuring that the top of the windshield 7 in the strong wind sky will not be deformed and bump the fuse pipe 9. The open section 18 plays the role of the original duckbill 5 and has a guiding and positioning function when the fuse tube 9 is installed.

[0045] Such as Figure 4 As shown, in this embodiment, a reinforcing rod 19 is fixedly connected to the periphery of the upper windshield 7 provided with the open...

Embodiment 3

[0047] Such as Figure 5 with 6 As shown, the present embodiment is substantially the same as the previous embodiment, except that the cross section of the lower windshield 8 is V-shaped, and the included angle of the V-shape of the lower windshield 8 is 60° and the ends of the two sides are connected to the fuse The outside edge of the tube body of the tube 9 is flush. Because the lower windshield 8 made of plastic is more prone to the problem of strong wind blowing and deformation, and because it is located at the lower part of the fuse tube 9, the static pressure air cavity under strong wind will generate back pressure and cause the problem of accidental detachment is not serious, so this embodiment The lower windshield 8 of this shape, the 60-degree V-shaped cover can not only break through the strong wind on the windward side, but also has a certain self-deformation ability, and has better mechanical performance even if it is subjected to side blowing.

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PUM

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Abstract

A high-adaptability drop-out fuse provided by the present invention comprises a mounting plate, an upper connecting plate, a lower connecting plate, a fuse tube and a windshield, the upper side of the mounting plate is fixedly connected with the upper connecting plate through an insulator, the lower side of the mounting plate is fixedly connected with the lower connecting plate through an insulator, the upper connecting plate is provided with an upper wiring terminal and an elastic upper static contact, and the lower connecting plate is provided with a lower wiring terminal. The upper connecting plate is provided with a lower wiring terminal and a hook-shaped lower static contact, the lower connecting plate is provided with a lower wiring terminal and a hook-shaped lower static contact, the fuse tube is provided with an upper moving contact and a shaft-shaped lower moving contact, the upper moving contact is clamped with the upper static contact, a hook part of the lower moving contact is clamped with a shaft part of the lower static contact, the cross section of the windproof cover is provided with a three-surface surrounding structure, and the windproof cover is fixedly connected with the upper connecting plate through a supporting plate. The three surfaces of the windproof cover cover the tube body of the fuse tube, and the opening of the three-surface surrounding structure faces the falling direction of the fuse tube. Installation and falling of the fuse tube are not affected, and the fuse tube can be protected from being blown, scraped and falling accidentally.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a highly adaptable drop-out fuse. Background technique [0002] Drop-out fuse is the most commonly used short-circuit protection switch for 10kV distribution line branch lines and distribution transformers. It is installed on the distribution transformer as the main protection of the distribution transformer, which can reduce the scope of power failure. It is economical and easy to operate. It is widely used in 10kV distribution lines and the primary side of distribution transformers for protection and equipment switching and switching operations. Drop-out fuses can generally be divided into two parts, the fuse base and the drop-out assembly. The drop-out assembly includes the fuse tube. When in use, the moving contacts at both ends of the fuse tube are fastened by the fuse (melt), the lower moving contact is in the shape of a shaft, hang it in the hook-shaped lower...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/04H01H85/165H01H85/20
CPCH01H85/04H01H85/165H01H85/20
Inventor 刘易鑫李胜宾魏超常立辉张卓
Owner 国网河北省电力有限公司元氏县供电分公司