Waist-supported rotary pressure equalization with grounding shield High-voltage vacuum interrupter solid-sealed pole

Abstract

The invention relates to a lumbar rotary type pressure equalizing belt grounding shielding high-voltage vacuum interrupter solid-sealed pole, which is electrically connected to a high-voltage conductive circuit by a conductive seat, a vacuum interrupter, and a conductive cylinder, and is grounded with a coaxial cylindrical The shielding cylinder is integrally packaged with solid insulating material, and the two ends of the solid-sealed pole are equipped with rotating movable contact fingers, and the conductive cylinder is equipped with a sliding spring contact finger and a direct-acting disc spring cylinder combination rod. The solid-sealed pole is fixed for the lumbar support, and the wires enter and exit at both ends. Under the linear and rotary alternate driving of the four-station integrated operating mechanism of the high-voltage vacuum isolation circuit breaker, the vacuum interrupter in the solid-sealed pole can be opened or closed to realize the function of the circuit breaker, and it can also be positive and negative. The reverse 90° rotation enables the three-phase pole of the high-voltage vacuum isolation circuit breaker to realize the conversion between the working position and the isolation position, and realizes the function of the isolation switch. There are clearly visible double isolation fractures in the isolation position. The product design has the advantages of compact structure, small size, maintenance-free, multiple functions, and reliable operation.

Description

technical field [0001] The invention belongs to the field of high-voltage electrical equipment, and relates to a solid-sealed pole for a high-voltage vacuum isolation circuit breaker used for protecting and controlling a high-voltage power system. The innovative development of the present invention also relates to the high-voltage electric field voltage equalization, insulation coordination, and structural design of high-voltage switchgear in this field, especially the development of solid insulated switchgear towards miniaturization, multi-station, compact, and high reliability. Technical countermeasures and research issues on the physical properties of materials used in pressure equalization and solid sealing, so it has the significance of making breakthroughs in extensive technical difficulties. Background technique [0002] At present, most of the poles used in high-voltage vacuum circuit breakers have only a single function, that is, the opening or closing function (see...

AI Technical Summary

Problems solved by technology

In order to meet the high-voltage insulation function and realize the clearly visible isolation fracture of the primary main circuit of the switchgear, the high-voltage vacuum circuit breaker is often made into a handcart and moved outside the cabinet (see figure 2 ), realize the disconnection of the primary main circuit of the switchgear, which not only increases the operating cost, but also is very cumbersome to operate, resulting in accidents caused by misoperation

Although individual pole products adopt the structure of a three-station vacuum interrupter, they still have not achieved an integrated and clearly visible isolation fracture, which is difficult to meet the requirements for high-voltage insulation

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