A fuse mechanism and a split type drop fuse
A fuse and fuse tube technology, which is applied in the electrical field, can solve the problems of easy heating of the contact surface, the design of the dynamic and static contacts cannot be too tight, and the dynamic and static contacts are hot.
Inactive Publication Date: 2017-10-31
王忠阳
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AI Technical Summary
Problems solved by technology
The length of the fuse is elongated due to long-term stress, causing the installation of the fuse tube to be loose
In order to realize the drop function of the fuse tube, the design of the dynamic and static contacts should not be too close, and the contact area should not be designed too large. When a large current passes through, the contact surface is prone to heat, causing the dynamic and static contacts to heat or ablate
Method used
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Embodiment Construction
[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] As shown in the drawings, the present invention proposes a fuse mechanism, which is characterized in that it is provided with an insulator 1, a rear drop fuse tube body 2, a fuse 3, a deflector 4, an upper movable contact 5, a lower The moving contact 6, wherein the upper end and the lower end of the insulator 1 are respectively equipped with the upper moving contact 5 and the lower moving contact 6, and the rear drop fuse tube body 2 is installed between the upper moving contact 5 and the lower moving contact 6 Between, on the insulator 1, one end of the upper movable contact 5 is connected with the deflector 4, and the fuse through hole 7 is set on the deflector 4, and a fuse pressing screw 8 is provided, and one end of the fuse 3 is connected with the upper movable contact. The contacts 5 are connected to each other, and the other end passes through the fuse ...
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The invention relates to the technical field of electricity, and in particular relates to a fusing mechanism and a split type drop fuse. The fusing mechanism is characterized in that the contact function and the drop function of the fusing mechanism are separated and respectively realized through two structures; and an insulator, a rear drop fuse tube body, a fuse wire, a guide plate, an upper movable contact and a lower movable contact are arranged, wherein the upper end and the lower end of the insulator are respectively provided with the upper movable contact and the lower movable contact. Compared with the prior art, the contact function and the drop function of the fusing mechanism are separated; upper and lower movable contact mechanisms are unnecessary to keep by tension of the fuse wire; the distance between the upper and lower movable contacts is adjustable; movable and fixed contacts are reliable to contact; the movable contact does not act when the fuse wire is fused; in the drop function, depending on the gravity and the elasticity of a spring, the fused fuse wire can be rapidly separated; and electric arc is extinguished.
Description
technical field [0001] The invention relates to the field of electrical technology, in particular to a fuse mechanism and a split-type drop-out fuse with reasonable structure, reliable operation, and the ability to quickly extinguish arcs. Background technique [0002] At present, the drop-out fuse is the most commonly used overcurrent and short-circuit protection switch for distribution line branch lines and distribution transformers. It has the characteristics of economy, convenient operation, and strong adaptability to outdoor environments. It is used in 10kV distribution lines and The primary side of the distribution transformer is used for protection and equipment switching and switching operations. It can reduce the scope of power failure, because it has an obvious disconnection point and has the function of an isolating switch, creating a safe working environment for the lines and equipment in the maintenance section, and increasing the sense of security of the mainte...
Claims
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IPC IPC(8): H01H85/143H01H85/54
CPCH01H85/143H01H85/54
Inventor 王忠阳夏清华王伯涛张毅王玥娜任福贵于李君汤序余姜则武王志伟蒋丽艳王录刚宋娜张人婕
Owner 王忠阳