Solid insulated high-voltage vacuum switch cabinet utilizing environment-friendly gas

Abstract

The invention discloses a solid insulated high-voltage vacuum switch cabinet utilizing an environment-friendly gas, wherein the solid insulated high-voltage vacuum switch cabinet comprises a low voltage chamber, a vacuum circuit breaker chamber, a cable chamber, a decompression chamber and a main circuit gas filled compartment; the main circuit gas filled compartment is installed on the back upper part of a cabinet body to form an internal and external double-layer structure with a switch cabinet shell, dry air is filled in the double-layer structure, the vacuum circuit breaker chamber is located in the front middle part of the cabinet body; and an operating mechanism of a three-station isolating / earthing switch, the vacuum circuit breaker chamber with a fixing and sealing post terminal, a handcart and an airtight instrument are installed in the cabinet body. The cabinet body disclosed by the invention omits the SF6 gas harmful to the environment, and the gas filled compartment is insulated by the dry air, therefore, the solid insulated high-voltage vacuum switch cabinet has the advantages of flexible expandability, compact structure, long service life, non maintenance and small volume, and can meet the power consumption demands of areas, industrial and mining enterprises, transformer substations, subways, light railways and railways having tense land, narrow spaces and high demands on reliability.

Description

Technical field [0001] The invention relates to a solid-insulated high-voltage vacuum switch cabinet, in particular to a solid-insulated high-voltage vacuum switch cabinet using environment-friendly gas. Background technique [0002] Medium-voltage gas-insulated metal-enclosed switchgear is a high-tech complete set of power distribution equipment that was newly developed internationally in the 1990s. It is designed with modularity, multi-functional combination, high reliability and compact structure as the design goal, creating a technical, Economic excellence represents the development direction of contemporary medium voltage switchgear and the world's advanced level. It expands conventional GIS technology to the medium voltage field and uses low-pressure SF6 gas or SF6 and N: mixed gas as the insulating medium. Combining GIS technology and switchgear technology to form a new complete series of products called gas-insulated metal-enclosed switchgear, and because of its small siz...

AI Technical Summary

Problems solved by technology

At the same time, the design and installation of the circuit breaker cannot be maintained and repaired or is difficult, which will bring great inconvenience to the user in the event of an accident. Maintenance-free high-voltage switchgear has become a worldwide research topic

At present, domestic manufacturers have launched solid ring network cabinets, but they are mainly load switches and vacuum circuit breakers with a rated current of 630A and a rated breaking current of 20KA. The production cost of the products is relatively high, and the application area is relatively small. Used as a general ring network switchgear

Can only meet the needs of general small-capacity users

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