A shielding case for a circuit breaker and a circuit breaker using the shielding case

A technology of shielding cover and circuit breaker, applied in the field of shielding cover, can solve the problems of large operation power loss and large movement quality of circuit breaker, and achieve the effect of reducing loss, improving power line distribution and ensuring product quality

Active Publication Date: 2016-09-14
STATE GRID CORP OF CHINA +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A shielding case for a circuit breaker and a circuit breaker using the shielding case
  • A shielding case for a circuit breaker and a circuit breaker using the shielding case

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Embodiment Construction

[0017] Such as 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 sta...

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Abstract

The invention discloses a shielding cover for a circuit breaker and a circuit breaker using the shielding cover. The shielding cover includes a cover body. The cover body includes a cylinder body. The axis of the body coincides with the inner cylinder, and the connecting thread is provided on the surface of the inner cylinder; the lower port of the cylinder is rolled up toward the inside of the cylinder or outside the cylinder to form an arc-shaped edge. The simple and light structure of the shielding case reduces the weight of the shielding case, effectively reduces the moving mass of the circuit breaker, reduces the loss of operating power, and has simple processing technology and convenient installation. reduce processing costs. At the same time, the connecting thread connecting the inner cylinder can also realize the fine-tuning function, that is, rotating the connecting inner cylinder to move the connecting inner cylinder relative to the nozzle, and drive the lower end of the shielding cover to reach the specified height position, thus avoiding the waste of the stroke and reducing the loss of operating power.

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 Patents(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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