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Fixed contact

A static contact and cylinder technology, applied in the field of electric equipment accessories, can solve the problems of affecting the safety of high-voltage power distribution, reducing the service life, and easy damage of static contacts, so as to achieve reasonable structure, prolong service life and prevent arcing The effect of the phenomenon

Inactive Publication Date: 2012-07-25
句容市华通电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since an arc will be generated between the static contact and the moving contact at the moment of switch opening and closing, frequent switch closures will easily damage the static contact, reduce its service life, and seriously affect the safety of high-voltage power distribution In order to improve the safety of high-voltage power distribution, it is necessary to replace the static contacts frequently, so the cost is virtually increased

Method used

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Effect test

Embodiment 1

[0013] Embodiment 1: as figure 1 As shown, a static contact includes a hollow cylindrical cylinder 1, the inner wall thickness of the cylinder 1 is divided into three stages from top to bottom in a stepped manner, and the inner and outer sides of the upper edge of the cylinder 1 All are provided with chamfering, and an installation hole 2 communicating with the inner cavity of the cylinder 1 is opened at the bottom of the cylinder 1; a gap 3 is provided outside the bottom of the cylinder 1; the inner wall thickness of the cylinder 1 from top to bottom is 20cm, 31cm, 58cm; on the entire cylinder 1, the cylinder 1 with a wall thickness of 20cm has a height of 32cm and an inner diameter of 89cm; the cylinder 1 with a wall thickness of 31cm has a height of 21cm and an internal diameter of 78cm; the cylinder with a wall thickness of 58cm Body 1 has a height of 22cm and an inner diameter of 21cm; the diameter of mounting hole 2 is 51cm; the chamfer on the outside of the upper edge i...

Embodiment 2

[0014] Embodiment 2: as figure 2 As shown, a static contact includes a hollow cylindrical cylinder 1, the inner wall thickness of the cylinder 1 is divided into three stages from top to bottom in a stepped manner, and the inner wall thickness of the cylinder 1 is divided into three stages, from From top to bottom, they are 20cm, 31cm, and 88cm; on the entire cylinder 1, the cylinder 1 with a wall thickness of 20cm has a height of 32cm and an inner diameter of 59cm; the cylinder 1 with a wall thickness of 31cm has a height of 21cm and an inner diameter of 48cm; The cylinder 1 with a thickness of 58cm has a height of 22cm and an inner diameter of 21cm; the diameter of the installation hole 2 is 51cm; the chamfer on the outside of the upper edge is 15°.

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Abstract

The invention discloses a fixed contact comprising a hollow cylindrical cylinder body, wherein the inner wall thickness of the cylinder body is increased from top to bottom in a stepped mode; the inner and the external sides of the upper edge of the cylinder body are provided with chamfers; and the bottom end part of the cylinder body is provided with a mounting hole communicated with the inner cavity of the cylinder body. The invention has the advantages that the structure is reasonable; the fixed contact is suitable for a circuit with low rated current and a circuit with high rated current;and the arc phenomenon between the fixed contact and a moving contact can be effectively prevented to enhance the safety of the circuits and prolong the service life.

Description

technical field [0001] The invention relates to accessories of electric equipment, in particular to a static contact. Background technique [0002] Static contacts are generally used on isolating switches. Isolating switches are the most widely used electrical appliances in high-voltage switching appliances. The design, establishment and safe operation of substations and power plants have a greater impact. The main feature of the isolating switch is that it has no arc extinguishing ability, and can only open and close the circuit under the condition of no load current. Since an arc will be generated between the static contact and the moving contact at the moment of switch opening and closing, frequent switch closures will easily damage the static contact, reduce its service life, and seriously affect the safety of high-voltage power distribution In order to improve the safety of high-voltage power distribution, the static contacts need to be replaced frequently, which virt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/06
Inventor 章伟章建龙
Owner 句容市华通电器有限公司
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