A vertical open ice breaking high voltage isolating switch

Abstract

The invention discloses a vertically open ice-breaking high-voltage isolating switch. The upper part of the operating pull rod (11) is hinged to one end of the ice-breaking connecting rod (10), and the other end of the ice-breaking connecting rod (10) is hinged to breaking crampons (7); The inner side of the moving contact area of ​​12) is provided with ice-breaking claws (7) that can slide longitudinally along the surface of the moving contact of the conductive arm. The tail of the ice-breaking claws (7) is hinged with the ice-breaking connecting rod (10). One end is hinged with the operating pull rod (11). The invention makes use of the low shear strength of ice to drive the movement of the ice-breaking mechanism at the same time as the movement of the moving contact pull rod, so as to realize the ice-breaking of the moving contact during the closing process, and then the ice-free moving contact is operated by the operating mechanism. Then break the ice on the static contact. The structure is simple and reasonable, and the work is reliable, which can meet the requirements of fast ice breaking.

Description

technical field [0001] The invention belongs to the field of high-voltage electrical equipment, in particular to a high-voltage isolating switch with a mechanical ice-breaking function. Background technique [0002] The national standard GB1985-2004 "High Voltage AC Isolating Switches and Grounding Switches" stipulates the operating requirements for ice-breaking operations under severe freezing conditions, that is, the opening and closing tests under the conditions of level 10 (10mm ice coating) and level 20 (ice coating 20mm). At present, one measure to solve the problem of normal operation of the high-voltage isolating switch under ice-covered conditions is to melt ice, such as CN201120308342.1, CN201220115423, CN201210507343, CN201420554736.9, etc., the ice is melted by direct current, but the ice-melting time is relatively long. And there are certain security risks. The high-voltage isolating switch with non-melting measures uses the movement of the moving contact drive...

AI Technical Summary

Problems solved by technology

At present, one measure to solve the problem of normal operation of the high-voltage isolating switch under ice-covered conditions is to melt ice, such as CN201120308342.1, CN201220115423, CN201210507343, CN201420554736.9, etc., the ice is melted by direct current, but the ice-melting time is relatively long. And there are certain security risks

The high-voltage isolating switch with non-melting measures uses the movement of the moving contact driven by the operating mechanism to achieve forced ice breaking. Due to the power of the operating mechanism, the rigidity of the operating mechanism, and the strength and stiffness of the conductive device, when the ice is too thick Unable to achieve ice breaking effect

The current vertically open high-voltage isolating switch can basically meet the ice breaking requirements under the condition of 10mm of ice covering, but cannot realize the closing and breaking of ice under the condition of 20mm of ice covering

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