An outdoor AC high voltage isolating switch

Abstract

The invention discloses an outdoor alternating current high-voltage isolating switch. The outdoor alternating current high-voltage isolating switch comprises a switch base, insulators, an arc extinction rod, a movable current-conducting plate, a fixed current-conducting plate, a movable conductive contact, a protective cover, a rotating shaft, a turning shaft, a push rod, a horizontal operation rod and an isolating switch operation mechanism; the switch base is fixed on a switch fixing support, the first insulator is fixed to one end of the switch base, the second insulator is hinged to the other end of the switch base through the rotating shaft, and one end of the rotating shaft is hinged to one end of the push rod. The turning shaft is arranged on the switch base provided with the first turning shaft, the other end of the push rod is connected with the turning shaft, the fixed current-conducting plate is arranged at the top end of the first insulator, and the movable conductive contact is arranged on one side of the fixed current-conducting plate. The movable current-conducting plate is arranged at the top end of the second insulator. One end of the horizontal operation rod is connected with the turning shaft, and the other end of the horizontal operation rod is connected with the power output end of the isolating switch operation mechanism. By means of the outdoor alternating current high-voltage isolating switch, gate closing and gate separating are in place accurately, and safety coefficients are high.

Description

technical field [0001] The invention relates to the technical field of AC high-voltage electrical equipment, in particular to an outdoor AC high-voltage isolating switch, which is used for electrified railway catenary. Background technique [0002] At present, the outdoor high-voltage isolation switch used in the power system is mainly the structural form of the 20th century. It is mainly divided into horizontal disconnection and horizontal operation opening (later called horizontal switch) and vertical fracture vertical operation opening (later called vertical switch). The switch is driven by the horizontal rotation of the operating shaft to drive the upper conductive part of the insulator to rotate horizontally to disconnect. It is characterized by easy operation, small contact friction, self-cleaning ability, and strong ice-breaking ability, but it takes up a lot of space, which is not conducive to being installed with other high-voltage electrical equipment. in one locat...

AI Technical Summary

Problems solved by technology

[0002] At present, the outdoor high-voltage isolation switch used in the power system is mainly the structural form of the 20th century. It is mainly divided into horizontal disconnection and horizontal operation opening (later called horizontal switch) and vertical fracture vertical operation opening (later called vertical switch). The switch is driven by the horizontal rotation of the operating shaft to drive the upper conductive part of the insulator to rotate horizontally to disconnect. It is characterized by easy operation, small contact friction, self-cleaning ability, and strong ice-breaking ability, but it takes up a lot of space, which is not conducive to being installed with other high-voltage electrical equipment. in one location

The vertical switch is driven by the joystick to pull the rotating shaft to push the insulator upward to disconnect the conductive part vertically. Its characteristic is that it occupies a small space and is conducive to installation with other equipment. However, its operating force is upward, and the joystick needs to be pushed upward, especially in high current. When the switch is operated by hand, the operation is difficult; secondly, the contact friction is large, and the conductive wear is large; there is also a vertical switch with poor ice-breaking ability, which is extremely difficult to operate in winter

In addition, the arc suppression capabilities of the above two switches are very poor, and the contacts are easy to pull arcs and burn out the contacts.

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