Tail gas recovery device for sulfur hexafluoride gas test instrument

Abstract

The invention provides a tail gas recovery device for a sulfur hexafluoride gas test instrument. The tail gas recovery device comprises an external gas storage tank and a main tail gas recovery device body, wherein the main tail gas recovery device body comprises a to-be-tested gas source inlet and a buffer tank; the to-be-tested gas source inlet is connected with a gas inlet of the sulfur hexafluoride gas test instrument through a gas connecting pipeline; a mass flow controller is arranged between the to-be-tested gas source inlet and the gas inlet of the instrument; one end of the buffer tank is connected with a tail gas outlet of the sulfur hexafluoride gas test instrument through a gas connecting pipeline, and the other end of the buffer tank is connected with a gas pump through a gas connecting pipeline; the gas pump is connected with a one-way valve through a gas connecting pipeline; the one-way valve is connected with one end of a recharging pipeline, and the other end of the recharging pipeline is connected with the external gas storage tank in a sealing mode; and recovered and compressed sulfur hexafluoride tail gas is conveyed to the external gas storage tank for storage. The tail gas recovery device can achieve zero discharge of the sulfur hexafluoride test tail gas, and has the advantages of high portability, high recycling capacity and wide application range.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a tail gas recovery device for a sulfur hexafluoride gas test instrument. Background technique [0002] In the power industry, sulfur hexafluoride (SF6) gas is widely used in various high-voltage electrical equipment because of its excellent insulation and arc-extinguishing properties. It is also an important greenhouse gas, and its GWP (Global Warming Potential, Global Warming Potential) is 23,900 times that of carbon dioxide (CO2). The United Nations Framework Convention on Climate Change (Kyoto Agreement) formulated by the United Nations in 1998 included it as one of the greenhouse gases that affect the global environment. In addition, sulfur hexafluoride gas in electrical equipment may also produce a variety of toxic or highly toxic gases due to equipment discharge, overheating and other failures. [0003] According to the operation and maintenance needs of sulfur he...

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Problems solved by technology

[0006] In order to solve the technical problems of too large device volume and limited recovery capacity in the tail gas recovery technology of sulfur hexafluoride gas test, the present invention provides a tail gas recovery device for sulfur hexafluoride gas test instrument, which is small, portable and versatile Strong and high recovery ability

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