Lumbar-support rotary-type voltage-sharing grounding shielding high-voltage vacuum arc extinguishing chamber solid-sealed polar pole

Abstract

The invention relates to a lumbar-support rotary-type voltage-sharing grounding shielding high-voltage vacuum arc extinguishing chamber solid-sealed polar pole. A conductive seat, a vacuum arc extinguishing chamber and a conductive tube are electrically connected to form a high-voltage circuit and also integrally packaged with a coaxial cylindrical grounding shielding tube through a solid insulating material. Rotary moving contact fingers are installed at the two ends of the solid-sealed polar pole. A slide spring contact finger and a direct-acting disc spring cylinder assembly rod piece are installed in the conductive tube. The solid-sealed polar pole is fixed through lumbar support and wires enter and exit at the two ends of the solid-sealed polar pole. Under alternative linear and rotary driving of a four-station integrated operation mechanism of a high-voltage vacuum isolation circuit breaker, the vacuum arc extinguishing chamber in the solid-sealed polar pole can be enabled to switch on or switch off so that a circuit breaker function is realized and positive and reversed 90-degree rotation can also be carried out so that the three-phase polar pole of the high-voltage vacuum isolation circuit breaker is enabled to realize switching of a work position and an isolation position and thus a disconnecting switch function is realized and a clear and visible double-isolation fracture is arranged at the isolation position. The product design has the advantages of being compact in structure, small in size, free from maintenance, mixed in use and reliable in operation and the like.

Description

Technical field [0001] The invention belongs to the field of high-voltage electrical equipment, and relates to a solid-sealed pole used for protecting and controlling a high-voltage vacuum isolation circuit breaker of a high-voltage power system. The innovative development of the present invention also relates to the current high-voltage switchgear in this field, especially the corresponding high-voltage electric field voltage equalization, insulation coordination, and structural design faced by the development of solid-insulated switchgear towards miniaturization, multi-station, compactness, and high reliability. Technical countermeasures and research issues on the physical properties of materials used for pressure equalization and solid sealing, so it has a wide range of technical difficulties breakthrough significance. 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 cl...

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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