Portable gas leakage detection device

Abstract

The invention discloses a portable gas leakage detection device, which comprises a gas flow channel, a connecting port fixedly connected to the front end of the gas flow channel, a foam liquid storagechamber fixedly communicated to the side part of the gas flow channel, and a nozzle fixedly connected to the rear end of the gas flow channel, wherein the connecting port is used for being connectedwith an inflation port of sulfur hexafluoride equipment in a sealed mode; the foam liquid storage cavity is used for storing foam liquid; and the nozzle is used for observing bubble generation. The portable gas leakage detection device is in sealing butt joint with the inflation port of the sulfur hexafluoride equipment through using the standard interface, connection is rapid and convenient, andthe sealing performance of sealing connection is improved; the foam liquid can be stored in the leakage detection device, the foam liquid does not need to be independently prepared, and gas leakage can be conveniently detected in time; bubbles can be blown out through the small holes to facilitate observation and judgment, and an operator can observe the air leakage condition more visually; and the portable gas leakage detection device can greatly improve the leakage detection efficiency of the inflation inlet of the sulfur hexafluoride equipment, has more reliable leakage detection result, and is low in cost and high in general applicability.

Description

technical field [0001] The invention relates to a portable gas leak detection device, which belongs to the substation SF 6 The gas detection device of the equipment. Background technique [0002] Sulfur hexafluoride, the chemical formula is SF 6 , is a colorless and odorless inert gas with good electrical insulation properties and excellent arc extinguishing properties. Its electric strength is 2.5 times that of nitrogen under the same pressure, its breakdown voltage is 2.5 times that of air, and its arc extinguishing ability is 100 times that of air. It is a new generation of ultra-high voltage insulating dielectric material superior to that between air and oil. [0003] Therefore, sulfur hexafluoride gas is widely used in electrical equipment for insulation and arc extinguishing; sulfur hexafluoride gas is mainly used in sulfur hexafluoride circuit breakers and GIS (sulfur hexafluoride closed combined electrical appliances), six Sulfur fluoride load switchgear, sulfur h...

AI Technical Summary

Problems solved by technology

Sulfur hexafluoride gas contains a small amount of water vapor in the high-temperature and high-pressure gas chamber. Sulfur hexafluoride gas will decompose when an arc or abnormal partial discharge occurs due to normal operation of the equipment, and its decomposition products (HF and SO 2 、SOF 2 、SOF 4 , SO 2 f 4 etc.) contain highly toxic and highly corrosive substances, which will corrode the internal metal components of the equipment, which in turn will cause equipment failure

[0007] Currently used gas leak detectors are often inaccurate due to exposure to the air for detection due to external wind speed and other issues. At the same time, due to the open detection, the test point cannot completely cover the gas filling port of the equipment, which may result in the inability to detect the leak site in time.

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