Grounding switch taking environment-friendly gas as insulating medium

By designing grounding switches for environmentally friendly gas medium, using transmission mechanisms and copper-silver alloy contact structures, the high-greenhouse effect and complexity of existing grounding switches are solved, and low-cost and high-reliability line opening and closing is achieved to meet the low-carbon demand of the power industry.

CN120473353APending Publication Date: 2025-08-12国电博纳(北京)电力设备有限公司
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Patent Information

Application Number
CN202510664530.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-22
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

The existing grounding switches cannot meet the low-carbon demands of the power industry in terms of structure and performance, especially the high greenhouse effect and complexity of sulfur hexafluoride, resulting in high equipment costs and low reliability.

Method used

Using environmentally friendly gas as the insulating medium, a grounding switch including a transmission mechanism, a grounding knife switch, a moving side arc contact and a static side arc contact are designed. The transmission mechanism drives the linear movement of the moving side arc contact and the static side arc contact to achieve the opening and closing. Combined with the transmission structure that supports the support, the transmission shaft, the crimp arm and the needle roller, the moving contacts made of copper and silver coating are used, and the static contacts adopt a copper-tungsten alloy ablation-resistant structure.

Benefits of technology

It realizes low-cost and reliable line opening and closing, has stable insulation performance and strong ablation resistance, and meets the working needs of environmentally friendly gas media.

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Abstract

The invention provides a grounding switch taking environment-friendly gas as an insulating medium. The grounding switch comprises a shell, and a transmission mechanism assembly, a grounding knife switch assembly, a moving side arc contact assembly and a static side arc contact assembly which are arranged in the shell, one end of the transmission mechanism assembly is connected with the output end of an external operating mechanism, the other end of the transmission mechanism assembly is connected with the grounding knife switch assembly, the transmission mechanism assembly is further connected with a grounding assembly, the moving side arc contact assembly is arranged at the action end of the grounding knife switch assembly, and the static side arc contact assembly is arranged on a bus side conductor. And the transmission mechanism assembly is controlled to act, and the grounding knife switch assembly drives the moving side arc contact assembly to do linear motion and to be in contact with or separated from the static side arc contact assembly, so that the grounding switch executes opening and closing. The circuit breaker has the advantages of being reasonable in structure, low in cost, reliable in action, stable in insulation performance and high in ablation resistance, and circuit opening and closing can be completed under an environment-friendly gas medium.
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