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Shielding case for breaker and breaker with shielding case

A circuit breaker and shielding cover technology, which is applied in the field of shielding covers, can solve the problems of large moving mass and large operating power loss of circuit breakers, and achieve the effects of improving power line distribution, reducing loss, and reducing moving quality

Active Publication Date: 2014-11-12
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a shielding cover for a circuit breaker to solve the technical problems in the prior art that the circuit breaker has a large moving mass and a large operating power loss due to the large weight of the shielding cover and the connection between the screw and the spout; at the same time, the present invention The invention also provides a circuit breaker using the shield

Method used

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  • Shielding case for breaker and breaker with shielding case
  • Shielding case for breaker and breaker with shielding case

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Embodiment Construction

[0017] like figure 1 As shown, a shielding cover for a circuit breaker includes a cover body, the above-mentioned cover body includes a cylinder body 1, and the upper port of the cylinder body 1 is flanged inwards to the cylinder body 1 to form a connecting inner cylinder whose axis coincides with the axis of the cylinder body 1 2. The surface of the above-mentioned connecting inner cylinder 2 is provided with a connecting thread; In actual implementation, the arc-shaped turning edge 3 can also be turned outwards from the cylinder body 1 , and those skilled in the art can choose the turning-up direction of the arc-shaped turning edge according to different situations. The shielding case can be a spinning part or a stamping part. In this embodiment, the shielding case is formed by a 5 mm thick aluminum alloy spinning process.

[0018] An embodiment of a circuit breaker of the present invention is figure 2 As shown, the circuit breaker includes a static main contact, a static...

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Abstract

The invention discloses a shielding case for a breaker and the breaker with the shielding case. The shielding case comprises a case body, the case body comprises a cylinder, the edge of an upper port of the cylinder is turned towards the inner portion of the cylinder to form a connecting inner cylinder with the axis coinciding with the axis of the cylinder, and the surface of the connecting inner cylinder is provided with connecting threads. The edge of a lower port of the cylinder is turned towards the inner portion of the cylinder or the outer portion of the cylinder to form an arc-shaped turned edge. The shielding case is simple and ingenious in structure, the weight of the shielding case is reduced, the moving mass of the breaker is effectively reduced, the loss of operation work is reduced, the machining process is simple, installation is convenient, and the machining cost can be greatly reduced when mass production is conducted on the shielding case. Meanwhile, the connecting threads of the connecting inner cylinder can achieve the fine adjustment function, namely the connecting inner cylinder is rotated to move relative to the nozzle so as to drive the bottom of the shielding case to reach a designated height position, therefore, stroke waste is avoided, and the loss of the operation work is reduced.

Description

technical field [0001] The present invention relates to a shield case for a circuit breaker and a circuit breaker using the shield case. Background technique [0002] In high-voltage circuit breakers, due to the sharp corners and burrs on the surface of the static contacts and static main contacts, in order to reduce the electric field intensity concentration caused by sharp corners and burrs and cause insulation breakdown, shielding covers are installed in most circuit breaker arc extinguishing chambers. At present, there are two common shielding structures for high-voltage circuit breakers: one is a fixed structure, and the metal rotating part is used to wrap the outside of the static main contact to realize the shielding of the static main contact and also play a role in the static arc contact. It has a certain shielding effect, but the shielding effect of this structure on the static arc contact is relatively weak; another structure is to set a shield cover between the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/02H01H33/53
Inventor 柏长宇仝永刚李付永韩峰杨珂王鹏超张鸣帅李小钊吴雪龙
Owner STATE GRID CORP OF CHINA
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