Suction type SF6 gas leakage monitoring device and method

A gas leakage and monitoring device technology, which is applied in the direction of measuring devices, color/spectral characteristic measurement, and application of light to test fluid tightness, etc., can solve the problems of limited application range and low monitoring accuracy of the leakage monitoring system, and achieve a compact and reliable device High performance, volume reduction effect

CN103017991AInactive Publication Date: 2013-04-03UNIV OF SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-04-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a suction type SF6 gas leakage monitoring device and method. The device comprises an air outlet (1), an air inlet (2), an infrared light supply (3), a window piece I (4), a window piece II (5), a reference spectral filter (6), a measuring spectral filter (7), a dual channel infrared detector (8), a temperature probe(9), a signal conditioning module (10), an A / D (Analog / Digital) conversion module (11), a data processing module (12), a light source driving module (13), a device body (14), an end cover I (15) and an end cover II (16). The invention provides the suction type SF6 gas leakage monitoring device and method have the advantages that the suction type SF6 gas leakage monitoring device has a digital output and thermal compensation function and is simple and reliable, and the sensitivity is high. The method and the device can carry out ration monitoring on SF6 leaking so as to externally output a high-precision SF6 leaking concentration value, and the method and the device have the advantages that the monitoring accuracy is high, the method and the device are stable and reliable, the structure is compact, the volume is small and exquisite and the like.
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Description

technical field

[0001] The invention belongs to the field of SF6 gas leakage monitoring, and specifically relates to a high-precision inhalation SF6 gas leakage monitoring method and device which adopts the dual-wavelength infrared monitoring principle, has temperature compensation, and has digital signal output. Background technique

[0002] In the power system, SF6 gas is widely used because of its excellent insulation performance and arc extinguishing performance. However, because SF6 is heavier than air, once it leaks, it is easy to deposit at the bottom of the power switch room, causing hypoxia in the human body when people enter. And SF6 will be decomposed into a variety of toxic substances under the action of high temperature or electric arc, or when encountering moisture. Therefore, the "State Grid Corporation of China Electric Power Safety Work Regulations" clearly requires regular monitoring and inspection of SF6 equipment and places, and stipulates that the conce...

Examples

Embodiment Construction

[0021] The concrete structure of this embodiment sees attached figure 1The inner hollow device body 14 forms an air chamber, the inner wall of the air chamber is plated with gold reflective film, and an air outlet 1 and an air inlet 2 are arranged on it. Windows 4 and 5 are installed at both ends of the device body 14, so that the air chamber is sealed and not To hinder the transmission of infrared light, a temperature detector 9 is arranged in the gas chamber. The left side of the window 4 is provided with an infrared light source 3 , which is fixed by an end cover 15 and connected to the device body 14 . The right side of the window plate 5 is provided with a dual-channel infrared detector 8, and a reference filter 6 and a measurement filter 7 are respectively installed in front of the two passages of the dual-channel infrared detector 8, so that the dual-channel infrared detector 8 It can output a reference signal and a measurement signal, fix the dual-channel infrared det...