Segmented pressurization and continuous storage SF6 gas on-site recovery device

Abstract

The invention discloses a sectional type pressurization and continuous storage SF6 gas field recovery device, belongs to the technical field of transformer substation SF6 recovery, and solves the problem of low recovery efficiency of an existing device. SF6 gas in gas chambers of a plurality of SF6 gas insulation devices is synchronously recovered by adopting a preceding-stage confluence pipeline; a graded pressurization rapid recovery pipeline is adopted, the SF6 gas in the gas chamber is pressurized and recovered in stages according to different pressures of the SF6 gas in the gas chamber, and the recovery speed is increased; after the operation is finished, residual SF6 gas in the pipeline is recycled, so that the pollution to the environment is avoided; the supercharged SF6 gas is subjected to two-stage cooling liquefaction through the cooling liquefaction pipeline, so that the SF6 gas is completely liquefied and is convenient to store; the liquid SF6 is continuously collected and stored through a rear-stage confluence storage pipeline, so that frequent startup and shutdown of equipment are avoided; according to the invention, the SF6 gas recovery efficiency in projects such as fault maintenance and expansion of ultrahigh-voltage and extra-high-voltage SF6 gas insulation equipment and totally-enclosed composite apparatuses is greatly improved.

Description

technical field [0001] The invention belongs to the substation SF 6 The field of recycling technology relates to a segmented pressurized and continuously stored SF 6 On-site gas recovery unit. Background technique [0002] With the rapid development of the global energy Internet, a large number of SF 6 Gas-insulated equipment is commonly used in ultra-high voltage, ultra-high voltage and fully enclosed combined electrical appliances. SF 6 The greenhouse effect is obvious, and it is one of the six major greenhouse gases clearly pointed out in the Kyoto Protocol of the United Nations Framework Convention on Climate Change. 6 The gas is recovered, treated and reused to meet environmental protection requirements. [0003] Application publication number CN113803960A, application publication date is December 17, 2021 Chinese invention patent application "Sulfur hexafluoride gas recovery and purification method and system", in view of the low recovery rate and recovery purity ...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to design a kind of SF with staged pressurization and continuous storage 6 On-site gas recovery device to solve the problem of existing devices that cannot be synchronized and continuously recover multiple SF 6 SF in the gas chamber of gas-insulated equipment 6 gas, resulting in the problem of low recovery efficiency

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