Switching-on mechanism of high-voltage isolation switch

Abstract

The invention discloses a switching-on mechanism of a high-voltage isolation switch. The switching-on mechanism comprises a static contact component and a moving contact component, the static contact component comprises a current-conducting plate and a static contact, and one end of the static contact is fastened on the current-conducting plate. The moving contact component comprises an annular moving contact, the annular moving contact is arranged on the inner wall of an upper conductive tube of the isolation switch, and the outer wall of the static contact is sleeved with the annular moving contact under the motion of the upper conductive tube to achieve switching on. The static contact component and the moving contact component are each provided with a sealing component, and the sealing components enable the static contact component and the moving contact component to be isolated from the outside air. The switching-on mechanism of the high-voltage isolation switch is simple in structure and reliable in motion and has the contamination and freezing prevention 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

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