Emergency auxiliary tools for abnormal opening of isolating switch

Abstract

The invention discloses an emergency auxiliary tool for abnormal opening of an isolating switch, which comprises a vertical hanging plate, a horizontal supporting plate, a spring, a vertical rod and a supporting rod, wherein the vertical hanging plate and the horizontal supporting plate are made of an insulating material, the spring and the vertical rod are connected with the vertical hanging plate, and the supporting rod is connected with the horizontal supporting plate; the vertical hanging plate is hung at the top surface of a static contact through hanging pieces made of the insulating material, the top surface of the horizontal supporting plate supports the bottom surface of a moving contact; the vertical hanging plate is sequentially provided with a fixing ring and a limiting ring from top to bottom along a central axis, the top end of the spring is fixed at the fixing ring, the bottom end of the spring is connected with the vertical rod, and the vertical rod penetrates through the limiting ring and is connected with the vertical hanging plate in a supported mode through a limiting block fixed on a body of the vertical rod; one end of the supporting rod is hinged with the vertical rod body located between the spring and the limiting ring, and the other end of the supporting rod is connected with the bottom surface of the horizontal supporting plate; and the vertical hanging plate is further provided with a support ring, and the supporting rod penetrates through the support ring and is connected with the vertical hanging plate. The emergency auxiliary tool disclosed by the invention can enable the moving contact to be separated slightly in allusion to an abnormal condition that the moving contact and the static contact are locked when the isolating switch opens, thereby realizing electrified opening smoothly.

Description

technical field [0001] The invention relates to an emergency auxiliary tool, in particular to an emergency auxiliary tool for abnormal opening of a disconnector, which belongs to the appliance for power system maintenance. Background technique [0002] After the outdoor high-voltage isolating switch has been in operation for a long time, because it is in the closed state for a long time, it is seldom operated, and its transmission parts will gradually oxidize, rust, and loosen. Occasionally, the defect of opening and closing is abnormal. [0003] For example, SPV, GW10, GW22, GW16 / 17 and other single-column vertical breaking folding arm knife gates, the dynamic and static contacts are seized during opening, and the moving contacts cannot be opened to make smooth opening and closing. Sometimes the situation that the conductive arm does not reach the dead point will also occur. Another example is SPO, GW23, GW11, GW17 and other double-column horizontal breaking folding arm k...

AI Technical Summary

Problems solved by technology

Another example is SPO, GW23, GW11, GW17 and other double-column horizontal breaking folding arm knife gates. When closing, the moving contact will be on the edge of the opening of the static contact and cannot be closed smoothly.

[0004] The current treatment methods are as follows: first, temporary power outage for maintenance or adjustment of operation mode, which will directly have a great impact on the stable operation of the system; second, use conventional insulating rods to pull or push contacts or conductive arms and other parts live, however Such an operation is extremely dangerous and the success rate is not high

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