Oil feeding and relieve valve of high pressure electric appliance special device

Abstract

The invention relates to an oil feeding and relieve valve of a high pressure electric appliance special device used for electrical equipment of power sector, which comprises a valve seat, a sealing ring I, an end face seal I, a sealing ring II, an inner shield clamp spring, an end face seal II, a valve plug, a sealing cap and a valve bonnet; the valve seat is thereon provided with the sealing ring I, an inner cavity of the valve seat is internally provided with the valve plug, the end face seal I is arranged between the end face of the valve plug and the valve seat, the sealing ring II is arranged on the outer diameter of the valve plug, the valve seat is thereon provided with the valve bonnet matching therewith, the end face seal II is arranged between the valve seat and the valve bonnet, and an oil outlet A is arranged on the valve seat; as the diameter of the oil outlet of the valve seat is less than the diameter of a solid filler of an insulating medium in an oil tank of a high pressure device connected therewith, the solid filler is prevented from flowing out; as a plurality of sealing rings are arranged, the sealing effect is good.

Description

technical field [0001] The invention relates to a device used on electrical equipment in the electric power industry, in particular to an oil filling and discharging valve for high-voltage electrical equipment special equipment for filling and discharging oil on high-voltage equipment. Background technique [0002] After retrieving relevant patent documents, no oil filling and discharging valve for special equipment for high-voltage electrical appliances with the same structure as the present invention has been retrieved at present. Existing high-voltage electrical equipment, especially high-voltage electrical equipment such as high-voltage current transformers, voltage transformers, and circuit breakers, generally uses insulating oil as a medium for insulation. After the high-voltage electrical appliances fill the equipment with oil, the equipment will be replaced and drained regularly. Due to structural reasons, the oil filling and discharging valve on the existing high-v...

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Problems solved by technology

After the medium insulating oil is used, especially the oil, it is inevitable that there will be a medium. When the medium passes through the contact surface between the valve core steel ball and the valve core, the impurities are often trapped in the valve core steel ball and the valve core due to the presence of impurities. Between the cores, the sealing effect is reduced, resulting in oil leakage and other phenomena, which affect the performance of the product, so it is necessary to improve the existing products to improve the quality of the product and meet the actual needs

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