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Three-working-position isolation switch

A technology of isolating switch and three-station, which is applied in the direction of electric switch, air switch parts, high-voltage air circuit breaker, etc. It can solve the problems of affecting the electrical performance of the isolating switch, the reduction of the insulation strength of the insulating porcelain bottle, and the fragile porcelain bottle, so as to eliminate The electric field at the tip is not uniform, the electric insulation strength is guaranteed, and the operation is convenient

Active Publication Date: 2013-12-04
无锡中科电气设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The insulating porcelain bottle of the isolating switch is easily broken when it is impacted by external force, which greatly reduces the insulation strength of the insulating porcelain bottle and seriously affects the electrical performance of the isolating switch. In addition, the isolating switch can only be used in air-insulated high-voltage electrical equipment as power isolation.

Method used

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  • Three-working-position isolation switch
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  • Three-working-position isolation switch

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Embodiment Construction

[0018] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the present invention is installed in the air box 32, including the transmission shaft 4 vertically installed in the air box 32. Transmission shaft 4 lower ends are equipped with bearing seat 23, and bearing seat 23 is fixed on inflatable box 32 bottoms with nut. The transmission shaft 4 upper end joins with the connecting shaft 3 with the axle sleeve 6, and fixes the transmission shaft 4 and the connecting shaft 3 with the cylindrical pin 7. The rotating shaft dynamic seal 2 is assembled on the upper end of the connecting shaft 3, and the rotating shaft dynamic seal 2 is fixed on the top of the inflatable box 32 with a nut. The bearing seat 23 and the rotating shaft dynamic seal 2 make the transmission shaft 4 keep the gas in the air-filled box from leaking when it rotates. After connecting shaft 3 stret...

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Abstract

The invention provides a three-working-position isolation switch used in a flame-proof electric appliance product controlled by an automatic complete equipment control system in a coal mine industry. The switch is a frameless vertical installation structure which is parallel to a bus. A main conductor is a copper knife shape structure. According to the invention, a manually operation mechanism is employed to carry out operation transmission, the operation mechanism is provided with locking devices at connection, isolation and grounding positions, positioning is carried out at each corresponding working position, and connection, isolation and grounding functions of the isolation switch are realized.

Description

technical field [0001] The invention relates to an explosion-proof electrical product controlled by an automatic complete equipment control system in the coal mine industry, in particular to a three-position isolating switch used in the explosion-proof electrical product. Background technique [0002] The isolating switch is used in the explosion-proof positive pressure high-voltage feeder for mine use, and is used for connecting and isolating the high-voltage incoming busbar and grounding the feeder. It needs to have the following three functional positions: the isolating switch is connected (closing), so that the feeder is connected to the bus to receive power; the isolating switch is isolated (open), so that the feeder is disconnected from the bus; the isolating switch is grounded ( The ground terminal closes), so that the feeder is grounded reliably when the feeder is not loaded, ensuring the safety of the load side of the feeder and the safety of maintenance personnel. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H31/00H01H31/02
Inventor 顾如清陈华俊
Owner 无锡中科电气设备有限公司
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