Sulfur hexafluoride tail gas recovery device

Abstract

The invention discloses a sulfur hexafluoride tail gas recovery device, relates to the field of sulfur hexafluoride tail gas recovery, and aims to solve the technical problems that tail gas detected by an existing sulfur hexafluoride gas detection instrument is directly discharged to the atmosphere without any treatment measures, the environment and the field worker safety are greatly affected, detection data is extremely sensitive to pressure change of a test cavity, and a compressor is directly used for extracting air from an exhaust port of the detection instrument to collect the tail gas,so that test data drifting is caused. According to the device, a gas buffer unit is arranged at a tail gas outlet of a detection instrument, starting and stopping of a diaphragm pump are controlled through a controller, gas pressure in the gas buffer unit is kept within a proper range all the time, on the premise, gas is compressed through a gas compression unit and transferred to a gas storage unit, and the sulfur hexafluoride gas with proper density can be stored in the gas storage unit. The device can solve the environment-protection problem that greenhouse effect gas is directly dischargedto pollute the atmosphere.

Description

technical field [0001] The invention belongs to the field of recovery of sulfur hexafluoride tail gas. Background technique [0002] Sulfur hexafluoride (SF 6 ) As a new generation of ultra-high voltage insulating dielectric material, as a good gas insulator, it is widely used in the gas insulation of electronic and electrical equipment, and plays the role of insulation and arc extinguishing. According to the electrical equipment handover test and preventive test regulations, it is necessary to regularly detect SF in electrical equipment 6 Humidity, purity, decomposition products, etc. of the gas, and SF 6 Testing instruments need to be calibrated and inspected regularly. Although sulfur hexafluoride itself is non-toxic and harmless to the human body, it is a greenhouse gas. This is because sulfur hexafluoride (SF 6 ) The effect of gas molecules on the greenhouse effect is CO 2 Molecules 25,000 times, while sulfur hexafluoride (SF 6 ) The gas has a long life, about 34...

AI Technical Summary

Problems solved by technology

At present, the tail gas of sulfur hexafluoride is directly discharged into the atmosphere without any treatment measures, which has a great impact on the environment and the safety of on-site workers.

The test data of sulfur hexafluoride gas humidity, purity, and decomposition products are extremely sensitive to pressure changes in the test chamber. Directly using a compressor to collect exhaust gas from the exhaust port of the testing instrument will cause test data drift, and it is necessary to find a suitable Technical means to circumvent this effect

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