Ventilation pedestal on gas insulation switch cabinet

Abstract

The invention relates to a medium-voltage power system cabinet type gas insulation metal-enclosed switchgear device, in particular to a heat dissipating device of a gas insulation switch cabinet. Theventilation pedestal on the gas insulation switch cabinet comprises a front plate component, a side plate component, a bottom plate and rear plate component; the front plate component, the side platecomponent, the bottom plate and rear plate component are connected into an integrated structure by welding or bolts; the front plate component and the rear plate component are respectively provided with a gas inlet; and the side plate component is provided with a gas outlet. The ventilation pedestal on the gas insulation switch cabinet in the invention can effectively enhance ventilation and heatdissipation of the shell of the complete cabinet of the C-GIS product and enhance the convection effect between the surface heat of the shell of a gas chamber and the atmospheric environment; the airflow is used for taking away the heat radiated by the shell so as to achieve the effect of reducing internal temperature of the C-GIS product cabinet; and the anti-internal arcing and protection levelof the shell of the complete cabinet of the C-GIS product is satisfied.

Description

technical field [0001] The invention relates to a cabinet-type gas-insulated metal-enclosed switchgear for a medium-voltage power system, in particular to a heat dissipation device for a gas-insulated switchgear. Background technique [0002] Medium-voltage power system cabinet-type gas-insulated metal-enclosed switchgear (hereinafter referred to as C-GIS), its primary main circuit is fully enclosed, fully insulated, and small in size, and is more and more favored by users. The primary main circuit is sealed in the air chamber shell made of metal (hereinafter referred to as "air chamber"). The heat generated by the conductor of the primary component in the air chamber and the connection of the conductor can not be realized by conventional air convection, but can only rely on the air chamber shell This is achieved by surface radiation, which significantly limits the heat export efficiency inside the gas chamber on C-GIS. Since the heat generated inside the C-GIS air chamber ...

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Problems solved by technology

[0003] Traditional C-GIS products are not designed with natural air intake ducts around the enclosure due to the above-mentioned anti-internal arcing and enclosure protection requirements, so that the heat generated inside the C-GIS gas chamber cannot be effectively communicated with the external atmosphere. This is also the fundamental reason why the temperature rise control of C-GIS products has not exceeded the rated current of 2750A and above under the condition of natural air cooling

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