Novel tool for reducing gas residual rate of SF6 steel cylinder

Abstract

The invention relates to a novel tool for reducing a gas residual rate of an SF6 steel cylinder. The novel tool comprises a vertical type gas cylinder heating small handcart, an electric control cabinet arranged on the heating small handcart, and upper, middle and lower sets of heaters, wherein each heater is composed of opening and closing type heating sheets; a heat insulation layer is arranged on the outer surface of each heating sheet and a temperature control probe is mounted in the upper heating sheet; a digital readout temperature controller is arranged in the electric control cabinet and is used for controlling a temperature setting range to 10-35 DEG C; a protection switch with a safety protection effect is arranged on the right side face of the upper heating sheet. The novel tool for reducing the gas residual rate of the SF6 steel cylinder is small in fund investment, simple in structure and convenient to use, and can be applied to gas filling and gas supplementation work of sulfur hexafluoride equipment of a transformer substation of a power supply company in cold weather. Therefore, a heating device of a sulfur hexafluoride gas cylinder has the advantages of being economic, practical, stable, reliable, and the like and has very strong actual application values and popularization values. The novel tool for reducing the gas residual rate of the SF6 steel cylinder is mobile and is low in cost, convenient to use and convenient to carry; the novel tool is easy to fill rapidly and convenient for field overhauling and maintenance.

Description

Technical field [0001] The invention relates to a tool, in particular to a new tool for reducing the residual rate of SF6 cylinder gas. Background technique [0002] In recent years, with the development of society and economy and the continuous updating of power equipment technology, large quantities of SF6 electrical equipment have been put into use in new substations and old substations. As sulfur hexafluoride (SF6) gas has excellent electrical insulation and arc extinguishing characteristics, it is widely used in the power industry as an insulating medium for switches and other electrical equipment. SF6 gas is stored in special steel cylinders. [0003] When newly installed GIS equipment, SF6 switches and CTs, or when there is a gas leak in operating equipment, the equipment needs to be filled with SF6 gas. During the inflation process, the tail of the SF6 cylinder tends to freeze. After freezing, the gas in the cylinder cannot be completely filled into the equipment, and a l...

AI Technical Summary

Problems solved by technology

When the liquid sulfur hexafluoride in the gas cylinder is filled into the high-voltage switch, the sulfur hexafluoride will change from liquid to gas and absorb a lot of heat. If there is no external heat source to continuously replenish heat to the gas cylinder, most of the hexafluoride will remain in the gas cylinder Sulfur cannot be discharged. In the past, gasoline blowtorches were used to heat gas cylinders to supplement the heat source. The heating area is uneven, the work efficiency is low, and there are also potential safety hazards.

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