Environment-friendly GIS switch cabinet with SF6 gas

Abstract

The invention discloses an environment-friendly GI S switch cabinet with SF6 gas, relates to the technical field of GIS switch cabinets, and provides the following scheme for solving the problems that an existing GIS switch cabinet is insufficient in control, prone to misoperation and the like, the environment-friendly GI S switch cabinet comprises a lower-layer cabinet body, and a first voltage transformer is fixedly installed on the inner wall of the left side of the lower-layer cabinet body; the right side of the inner wall of the bottom of the lower-layer cabinet body is sleeved with four wire outlet pipes. The circuit breaker operation structure integrates the functions of an isolating switch and a grounding switch, can realize mechanical locking, prevents a main loop from being electrified to switch on a grounding knife, effectively avoids misoperation, monitors the pressure in the upper-layer cabinet body by the pressure sensor, and ensures that the pressure in the upper-layer cabinet body is monitored by the pressure sensor. And the vacuum circuit breaker is controlled by the circuit breaker operation structure, so that the effects of on-load closing, grounding wire closing, mistaken entering into an electrified interval, electrified grounding wire closing, incapability of exiting from the working position of the circuit breaker and the like are prevented.

Description

technical field [0001] The invention relates to the technical field of GIS switch cabinets, in particular to an environment-friendly GIS switch cabinet with SF6 gas. Background technique [0002] It is installed by the manufacturer in a closed metal cabinet according to a certain wiring method, and the switchgear, busbar, measuring instrument, protection appliance and auxiliary equipment of the same circuit are all assembled in a closed metal cabinet, and the complete set is supplied to the user. The high-voltage switchgear is generally suitable for AC 50Hz. , In the power system with voltage of 3~35kV, it is used for power reception, distribution, on, off and monitoring protection. This equipment has the characteristics of compact structure and convenient use, so it is widely used to control and protect transformers, high-voltage lines and high-voltage Among the electric motors and other equipment, the high-voltage switch manufacturing industry is an important part of the p...

AI Technical Summary

Problems solved by technology

[0003] The existing high-voltage switchgear has an air chamber, and the air chamber is provided with three air chambers, two air chambers, and a single air chamber. Now most of them are two air chambers. The single air chamber has a simple structure, easy manufacture, and low cost, but the air chamber components Together, it is easy to interact with each other, and the reliability is poor; the multi-chamber structure module is easy to replace, avoiding the interaction of multiple components, and has high safety, but the multi-chamber structure is complex, difficult to manufacture, and high in cost. The rated working pressure of the air chamber, Minimum working pressure, safe release pressure, allowable running time after pressure release, annual leakage rate, allowable gas humidity content, service life of the sealing system, temperature rise of the shell, and cable connection height in the cabinet, among other parameters, during the entire operation period of the inflatable cabinet, Condensation must not appear inside (when the surrounding air changes), and the high-voltage switchgear has a cable room, but the existing cable room does not adopt a mid-mounted structure design, which will easily cause distortion and deformation caused by the too long operating shaft of the grounding switch. The indoor space of existing cables is small, multiple cables cannot be connected, the cable connection height is high, and the cable head is easy to install. To solve the above technical problems, a kind of SF6 gas environment-friendly GIS switchgear is proposed.

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