Closing mechanism of high voltage isolating switch

Abstract

The invention discloses a closing mechanism of a high-voltage isolating switch, which includes a static contact assembly and a moving contact assembly. The static contact assembly includes a conductive plate and a static contact. One end of the static contact is fastened to the On the conductive plate, the moving contact assembly includes a ring-shaped moving contact, the ring-shaped moving contact is installed on the inner wall of the upper conductive tube of the isolating switch, and the movement of the ring-shaped moving contact in the upper conductive tube The lower sleeve is set on the outer wall of the static contact to realize closing; the static contact assembly and the moving contact assembly are both provided with a sealing assembly to isolate it from the outside air. The closing mechanism of the high-voltage isolating switch of the present invention has the advantages of simple structure, reliable action and antifouling and antifreezing functions.

Description

technical field [0001] The invention mainly relates to the technical field of electric equipment, in particular to a closing mechanism of a high-voltage isolating switch. Background technique [0002] High-voltage isolating switch is an important switching device in the electrical system of power plants and substations. It needs to be used in conjunction with high-voltage circuit breakers. Its main function is to ensure the safety of high-voltage electrical equipment during maintenance work and to isolate voltage. At present, the closing mechanism (including the moving contact and the static contact) in the isolating switch is exposed to the air. Due to the different climate and environmental conditions in some regions (such as sand, fog, etc.), sand or fog often It will accumulate on the moving contact or the static contact, and eventually lead to poor contact when the disconnector is closed, icing makes the contact resistance large and the heat is serious, and finally affe...

AI Technical Summary

Problems solved by technology

At present, the closing mechanism (including the moving contact and the static contact) in the isolating switch is exposed to the air. Due to the different climate and environmental conditions in some regions (such as sand, fog, etc.), sand or fog often It will accumulate on the moving contact or static contact, which will eventually lead to poor contact when the isolating switch is closed, icing will cause high contact resistance and serious heating, and will eventually affect the safe operation of the substation and the power grid

Images