A diffusion type sf6 gas leakage monitoring device and method

A technology of gas leakage and monitoring device, which is applied in measurement devices, liquid/vacuum measurement for liquid tightness, and material analysis by optical means, etc. problems, to achieve the effect of easy continuous online monitoring, avoiding interference, and accurate output results

Inactive Publication Date: 2015-10-21
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
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Problems solved by technology

However, in practical applications, due to the need to use an air pump to pump air, the gas needs to be filtered and dried before entering the gas chamber, which makes the structure of the device complex and consumes a lot of power, which is not conducive to continuous online monitoring, thus limiting the application of this technology

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  • A diffusion type sf6 gas leakage monitoring device and method
  • A diffusion type sf6 gas leakage monitoring device and method
  • A diffusion type sf6 gas leakage monitoring device and method

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Embodiment Construction

[0019] The best embodiment of the present invention is to adopt the parabolic condenser to focus and collimate the infrared light emitted by the infrared light source, and to realize the reflection and convergence of the infrared light by using a spherical reflector and a conical light collector. The surface of the spherical reflector is gold-plated to ensure The infrared detector receives sufficient light intensity. The waterproof, dustproof and breathable film can not only effectively avoid the impact of dust, moisture and other impurities on the optical components, but also ensure that the gas enters the air chamber smoothly to obtain a faster response speed.

[0020] The structure of this embodiment is as figure 1As shown, the bracket 10 with openings forms a hollow air chamber, and the bracket 10 is closely attached to a waterproof, dustproof and breathable membrane 12, and a filter protection cover 11 is put on the outside, and one end of the bracket 10 is placed to refl...

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Abstract

The invention provides a spreading type device and method for monitoring SF6 gas leakage. A device comprises an infrared light source (1), a condenser lens (2), a temperature detector (3), a conical light collection device (4), a measuring optical filter (5), a reference optical filter (6), a double-channel infrared detector (7), a reflection mirror (8), a reflection mirror seat (9), a support (10), a filter protection cover (11), a waterproof dustproof gas-permeable film (12), a signal conditioning module (13), an analog / digital (A / D) conversion module (14), a data processing module (15) and a light source driving module (16). The device and method is capable of continuously monitoring SF6 gas leakage on line, high in response and high in accuracy and reliability. The device has excellent waterproof dustproof performance, does not require a gas pump and can be widely applied to an SF6 gas leakage monitoring system.

Description

technical field [0001] The invention belongs to the field of SF6 gas leakage monitoring, and specifically relates to a high-precision SF6 gas leakage monitoring method and device that adopts a dual-wavelength infrared monitoring principle, a diffusion structure, self-contained temperature compensation, and digital signal output. Background technique [0002] SF6 gas has been widely used in power systems due to its excellent insulating properties and arc extinguishing properties. However, the leakage of SF6 gas will pollute the indoor environment, which will seriously threaten the health and even life of the operators and maintenance personnel who enter the room. Therefore, good SF6 leakage gas monitoring technology is valued and pursued by practitioners in the power industry. [0003] In the field of SF6 gas leakage monitoring, the advantages of infrared monitoring technology are gradually being recognized and valued. Infrared gas leakage monitoring technology is one of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/02G01N21/3518G01N21/3504
Inventor 赵建华陈迎春
Owner UNIV OF SCI & TECH OF CHINA
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