High-voltage isolation switch

Abstract

The invention relates to the technical field of electric power facilities, and discloses a high-voltage isolation switch, which comprises a fixed beam and two insulators, and is characterized in thatthe two insulators are symmetrically arranged left and right, connecting ends are fixedly arranged at the tops of the two insulators, and a right knife switch is fixedly arranged at the left side of the connecting end at the right side; and a left knife switch is fixedly mounted on the right side of the left connecting end. Through the arrangement of a arc-shaped rotating disc and a sliding devices, when the rotating angle of the arc-shaped rotating disc is 90 degrees, the first section of arc of the arc-shaped rotating disc pushes the two sliding devices to the two sides, the right knife switch is slowly taken away from the contact contactor through the insulator and the connecting end in sequence, and then when the right knife switch is about to be separated from the contact contactor, the sliding device is in arc contact with the second section of the arc-shaped turntable, so that the sliding device is pushed to quickly move towards two sides, the right knife switch is driven to bequickly separated from the contact contactor, arc light is effectively prevented, and the safety of a circuit is guaranteed.

Description

technical field [0001] The invention relates to the technical field of power facilities, in particular to 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 for high-voltage equipment to connect, cut off or switch lines when there is voltage and load. Its main function It is to ensure the safety of high-voltage electrical appliances and devices during maintenance work. It plays the role of isolating voltage. It cannot be used to cut off, input load current and break short-circuit current. It can only be used for some switching operations that do not generate strong arcs. However, some high-voltage There are some deficiencies in the isolation switch, as follows: [0003] The insulating support of the GW4 high-voltage isolating switch bears the role of support and transmission...

AI Technical Summary

Problems solved by technology

[0003] The insulating support of the GW4 high-voltage isolating switch bears the role of support and transmission. The pulling force of the wire and the resistance when closing the switch act together on the insulating support to generate a rotational moment. When operating, the transmission parts are rusted or the installation is improper. When the process is blocked, the insulating support is affected by the additional torque, resulting in a greater blockage, resulting in the breakage of the insulating support, causing a short circuit or even a fire in the line, resulting in huge losses. When the blade is separated from the fixed contact, it should be quickly when the blade is about to leave the fixed contact. However, because the current transmission mechanism cannot accurately distinguish and control the separation speed, it is easy to generate arc light during separation, which brings hidden dangers to the safety of the line. Similarly, when closing, the speed at closing cannot be controlled, and it is easy to collide at the final closing, causing equipment damage, deforming the mechanism, and breaking the insulator

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