Indoor electric power system gas-insulated cabinet

Abstract

The invention belongs to the technical field of inflatable cabinets, and discloses an indoor electric power system gas-insulated cabinet, which comprises a cabinet body, wherein a cabinet door is movably mounted above the front surface of the cabinet body through hinges, an access cover is movably mounted below the front surface of the cabinet body, a three-way box is fixedly mounted on the left side of the top end of the cabinet body, and a connecting pipe is fixedly installed at the position, close to the upper portion, of an inner cavity of the cabinet body. According to the indoor electric power system gas-insulated cabinet, the heat of electrical components is reduced, high-temperature nitrogen flows back to the interior of the three-way box through the gas transmission pipe, and the heat is effectively reduced through the heat exchange pipe, the copper pipe and the vapor chamber before the nitrogen flows back to the three-way box, so that the nitrogen can be recycled, the original sealing structure and the insulation property of the gas-insulated cabinet are not damaged, and meanwhile, heat in the gas-insulated cabinet is replaced by gas, so that the heat is reduced, the gas is recycled, the service life of components in the gas-insulated cabinet is effectively prolonged, and the energy consumption required by cooling is relatively low.

Description

technical field [0001] The invention belongs to the technical field of inflatable cabinets, in particular to a power system inflatable cabinet for indoor use. Background technique [0002] Indoor AC high-voltage gas-insulated metal-enclosed switchgear is a new generation of switchgear. The main switch can use both permanent magnet mechanism vacuum circuit breaker and spring mechanism vacuum circuit breaker. The whole cabinet adopts air insulation and sulfur hexafluoride gas compartment. Combined, it is both compact and expandable, suitable for distribution automation. The inflatable cabinet has the characteristics of compact structure, flexible operation, and reliable interlocking. It is suitable for various applications (especially places with harsh environments) and different user requirements. Can provide satisfactory technical solutions, sensor technology and the adoption of the latest protective relays, coupled with advanced technical performance and flexible assembly s...

AI Technical Summary

Problems solved by technology

[0003] The inflatable cabinet used in the power system is generally composed of a hollow cabinet body welded by metal stainless steel plates, and a mounting frame is generally welded inside to install various electrical components, and the gas is filled into the interior of the inflatable cabinet after the components are placed. To achieve protection, since the gas mainly plays the role of insulation protection, waterproof and dustproof for various components, the gas needs to be in a relatively sealed environment to ensure that the gas does not leak, and then realize the protective effect of the gas, but the electrical components are in In actual work, due to the characteristics of its own load and circuit, the electrical components will generate heat. Then the heat generated by the components in a relatively closed space will accumulate in the interior of the inflatable cabinet, which will cause heat loss inside the inflatable cabinet. A sharp rise, which in turn affects the normal operation of components, causing electrical components to operate at high temperatures for a long time, slowing down the service life

[0004] In order to make the electrical components inside the power system inflatable cabinet have a good working environment, in the prior art, gas is generally injected into the inflatable cabinet to achieve air isolation, and then the internal electrical components are protected to achieve waterproof and dustproof. At present, The common filling gas is generally sulfur hexafluoride gas. Although this gas has a stable structure and good insulation effect, it will pollute the atmosphere and cause the greenhouse effect, which obviously does not meet the sustainable development of human beings formulated by the United Nations. The target, and when this kind of inflatable cabinet is opened, the sulfur hexafluoride gas inside will naturally leak into the air, which will not only intensify the greenhouse effect but also cause the reduction of oxygen content in the unit space, which has a certain risk of suffocation

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