GIS decomposed gas detection device
A detection device, a technology for decomposing gas, applied in measurement devices, analytical materials, material excitation analysis, etc., can solve the problems of poor detection effect, poor gas selectivity, and high gas chromatography, and achieve the effect of high-sensitivity detection
Inactive Publication Date: 2021-06-22
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST +1
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Problems solved by technology
[0003] The existing GIS decomposed gas detection methods are generally chemical methods and optical methods. Among the chemical methods, gas chromatography is expensive and takes a long time to detect, and the detection accuracy of the detection tube method is low.
The semiconductor sensor method has poor gas selectivity and cross-sensitivity
Optical methods such as mid-infrared absorption spectroscopy and photoacoustic spectroscopy cannot achieve high-sensitivity multi-component measurement in high-concentration backgrounds, and different gases require different laser light sources, resulting in poor detection results
Therefore, the detection effect of the existing technology is poor when detecting GIS decomposition gas
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[0035] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0036] see figure 1 , is an overall schematic diagram of the detection device for GIS decomposition gas provided in the embodiment of the present application. Such as figure 1 As shown, the device includes: a laser, a beam calibration unit, a filter unit, a near-central bidirectional multi-channel cavity and a spectrum acquisition unit.
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The invention provides a GIS decomposed gas detection device. The GIS decomposed gas detection device comprises a laser, a light beam calibration unit, a filtering unit, a proximal bidirectional multichannel cavity and a spectrum acquisition unit. The laser emits laser to the light beam calibration unit; the light beam calibration unit calibrates the quality of the received laser and sends the laser to the filtering unit; the filtering unit is used for filtering the received laser and sending the laser to the proximal bidirectional multi-channel cavity; the proximal bidirectional multichannel cavity can be filled with GIS decomposition gas, and the proximal bidirectional multichannel cavity receives the laser sent by the filtering unit to enable the laser to irradiate the GIS decomposition gas to obtain Raman scattering light and send the Raman scattering light to the filtering unit; the filtering unit sends the Raman scattering light to the spectrum acquisition unit; and the spectrum acquisition unit is used for filtering the Raman scattering light to obtain Stokes Raman scattering light and detecting and analyzing the Stokes Raman scattering light. According to the invention, high-sensitivity detection can be carried out on the GIS decomposition gas.
Description
technical field [0001] The present application relates to the technical field of electrical equipment fault detection, in particular to a detection device for GIS decomposition gas. Background technique [0002] Running SF6 insulated combined electrical appliances (GIS) will decompose under the action of various factors such as electricity, heat, and environment, and produce various gases that reflect the nature of the fault and insulation performance, such as sulfur dioxide, hydrogen sulfide, carbon monoxide, and carbon dioxide. These gases are uniform Distributed in GIS, collectively referred to as GIS decomposition gas. The analysis of GIS decomposition gas can effectively judge the early latent fault of GIS, and the type of GIS fault can be judged by accurately detecting the concentration of decomposition gas. Therefore, it is of great significance to accurately detect the trace fault characteristic gas of GIS to ensure the safe and reliable operation of large power equ...
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IPC IPC(8): G01N21/65G01N21/01
CPCG01N21/65G01N21/01G01N2021/0112
Inventor 王浩州胡锦钱国超彭庆军邹德旭王建新陈伟根邹阅培周峰王品一
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST