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An interlocking inflatable load switch and its interlocking method

A load switch and gas-filled technology, which is applied in the direction of electric switches, electrical components, circuits, etc., can solve the problems of hidden dangers in operation, complicated operation, and many procedures, and achieve reliable opening and closing interlocking, simple operation methods, and small size. Effect

Active Publication Date: 2015-07-29
杭州电器开关有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the load switch of the existing inflatable switchgear often encloses the main switch in a stainless steel device filled with sulfur hexafluoride gas. It is carried out independently, so there are problems of complicated operation and many programs, and there are potential safety hazards in operation

Method used

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  • An interlocking inflatable load switch and its interlocking method
  • An interlocking inflatable load switch and its interlocking method
  • An interlocking inflatable load switch and its interlocking method

Examples

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] Such as figure 1 As shown, an interlocking inflatable load switch, including a main switch 1 and a grounding switch 2, is set in a sealed stainless steel box filled with sulfur hexafluoride, and between the main switch 1 and the grounding switch 2 is set Interlock mechanism 3.

[0038] In the present invention, the main switch 1 and the grounding switch 2 adopt a left and right opposing manner. The main switch 1 mainly includes a main switch operating shaft 11, a crank arm 12, a swing fork 14, a movable contact conductive cylinder 16, a lower static contact seat 17, an upper static contact seat 20, and a plum blossom contact 22. The crank arm 12 is fixedly connected to the main switch operating shaft 11, the other end of the crank arm 12 is hinged by the pin shaft 13 and the swing clamp 14, and the other end of the swing clamp 14 is hinged by...

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Abstract

The invention discloses an interlock type inflatable load switch and an interlocking method thereof, which are applicable to opening and closing interlock of a main switch and a grounding switch. The main switch and the grounding switch are arranged oppositely left and right in a stainless steel box, which is hermetically filled with sulfur hexafluoride; an interlocking mechanism is arranged between the two switches and comprises an interlocking shaft; an interlocking sheet is sleeved on the shaft and is provided with two interlocking posts which are used for limiting rotation of a main switch operating shaft and a grounding switch operating shaft respectively; the interlocking sheet is also provided with a torsion spring resetting bumping post for automatically resetting an interlocking shaft torsion spring; the interlocking mechanism also comprises a main limiting sheet which is fixed on the main switch operating shaft, a grounding limiting sheet which is fixed on the grounding switch operating shaft, and a main limiting post and a grounding limiting post which are fixed on a box framework. The interlocking method between the two switches comprises the following steps: when both the main switch and the grounding switch are opened, the interlocking mechanism does not limit the closing of the switches; when the main switch is closed, the grounding switch is not allowed to be closed; when the grounding switch is closed, the main switch is not allowed to be closed.

Description

technical field [0001] The invention relates to an electrical switch, in particular to an interlocking inflatable load switch related to a main switch and a grounding switch and an interlocking method thereof, so as to ensure the safety of the switch. Background technique [0002] In the current inflatable ring network switchgear, the isolating switch and the grounding switch do not have an interlock function. During operation, the operator's active consciousness is used to control misoperation. If you are not careful, it is possible to close the grounding switch when the main circuit is live, or close the isolation switch when the main circuit is grounded. In addition, the load switch of the existing inflatable switchgear often encloses the main switch in a stainless steel device filled with sulfur hexafluoride gas. It is carried out independently, so there are problems of complicated operation and many programs, and there are hidden safety hazards in operation. Contents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/26
Inventor 洪福贤林必宝叶锦球
Owner 杭州电器开关有限公司
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