Solid assembly unit of switchgear cubicle for loop network

Abstract

Disclosed is a solid assembly unit of a switchgear cubicle for a loop network. The problems that an existing solid insulation switchgear cubicle for the loop network is not sealed or not sealed tightly and a three-station isolating grounding switch is free of visible fractures are solved. The solid assembly unit comprises a three-station isolating grounding switch module and a vacuum circuit breaker and load switch module, and is essentially technically characterized in that the three-station isolating grounding switch module comprises a small-sized modular operating mechanism and three-station isolating grounding switch poles with visible fractures, the vacuum circuit breaker and load switch module comprises a vacuum circuit breaker and load switch poles and a small-sized multifunctional operating mechanism, and the vacuum circuit breaker and load switch module and a universal connecting flange of the three-station isolating grounding switch module are mutually sealed by a silicone rubber sealing ring and are fixedly connected by bolts for sealed insulation. The solid assembly unit is compact in structure, reasonable in design, easy for modularization of parts, visible in fractures, high in insulating strength, good in interchangeability, convenient to install and debug and safe and reliable to use.

Description

technical field [0001] The invention relates to a switchgear for ring network power supply and terminal power supply, in particular to a solid combination unit for a fixed ring network switch cabinet with a small modular structure. It is mainly used in ring network switch cabinets in urban buildings, shopping malls, public utilities, airports, railways, transportation, coal, chemicals, steel, industrial and mining enterprises, transmission and transformation stations, and power plants. Background technique [0002] Ring network switchgear (ring network cabinet) is a high-voltage switchgear assembled in a steel plate metal cabinet or made into an assembled interval ring network power supply unit. Most of its core parts use vacuum circuit breakers, load switches and isolating switches. It has a simple structure, It has the advantages of small size, low price, improved power supply parameters and performance, and power supply security. According to the insulation medium, the r...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a solid combination unit for a ring network switchgear, which solves the problems of unsealed or poorly sealed existing solid insulated ring network cabinets and no visible fracture of the three-station isolating grounding switch. Compact structure, reasonable design, easy modularization of components, visible fracture, high insulation strength, good interchangeability, easy installation and debugging, safe and reliable use

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