Detection device for SF6 gas decomposition product
A gas decomposition and detection device technology, which is applied in the direction of analyzing materials through chemical reactions and analyzing materials through observation of the impact on chemical indicators. It can solve gas cross-interference, reduced sensor life, and large deviations in detection results. and other issues to achieve the effect of ensuring zero emissions
Active Publication Date: 2015-07-08
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology
[0012] 1) When the electrochemical sensor method is used for high-concentration gas detection, if the detected gas concentration exceeds the sensor range, the service life of the sensor may be reduced or damaged;
[0013] 2) When the electrochemical sensor method is used for detection, there is cross-interference between different gases;
[0014] 3) At present, when the detection tube method is used for detection on site, manual samplers or float flowmeters are mostly used, and the test flow is difficult to control accurately, resulting in large deviations in detection results
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[0049] The following is a concrete example to illustrate SF 6 The principle and detection process of the gas decomposition product detection device can detect the equipment SF by replacing the detection tube I in the detection module 5 6 SO of gas decomposition products 2 , H 2 For gas components such as S, CO and HF, select the detection tube with the corresponding range according to the detection needs. According to the test results, the equipment failure can be judged. The recovery processing module 8 of the detection device is equipped with a gas component adsorbent 6 and a gas recovery device 7, the adsorbent 6 uses F-03 adsorbent, the amount of the adsorbent is 0.2kg, and the gas recovery device 7 is equipped with a 1-liter recovery cylinder , which can realize SF in the gas chamber of multiple gas-insulated equipment in the substation 6 Environmentally friendly real-time detection of gas composition.
[0050] Below to detect SO 2 The gas content is taken as an exa...
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Abstract
The invention provides a detecting device for an SF6 gas decomposition product. The detection device comprises a recovery and processing module, a detection module and a flow adjusting module, wherein the detection module and the flow adjusting module are arranged in parallel; the input ends of the detection module and the flow adjusting module are respectively connected with two outlets of a tee switch valve; the output ends of the detection module and the flow adjusting module are respectively connected with the input end of the recovery and processing module; the detected gas enters the detection module from an inlet of the tee switch valve; the tee switch valve controls the detected gas to enter the flow adjusting module firstly; after the flow of the gas is adjusted to a required value for detection, the tee switch valve is switched to make the gas enter the detection module for detection; and the detected gas output through the flow adjusting module and the detection module is recycled through the recovery and processing module. Through the device, the gas components which can reflect the running state of gas insulation equipment can be detected in real time, environment-friendly recovery of the detected gas can be realized, and effective guarantee is provided to the reliable operation of power equipment and the safety of inspectors.
Description
technical field [0001] The invention belongs to a gas detection device, in particular to a SF 6 Detection device for gas decomposition products. Background technique [0002] Gas-insulated metal-enclosed switchgear (GIS) is widely used in power systems due to its small footprint and high reliability. Because all components of GIS are enclosed in metal shells, its early faults are more difficult to detect than conventional substations, and the losses caused by faults are also greater. Monitoring the internal state of GIS equipment to avoid accidents has always been a research focus of domestic and foreign scientific research institutions. . Relevant tests and operating experience show that fault diagnosis and state assessment of the internal insulation of the equipment by detecting the decomposition products in the GIS equipment has the characteristics of strong anti-interference ability and high sensitivity, and is widely used in the field detection and analysis of equipme...
Claims
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IPC IPC(8): G01N21/78
Inventor 季严松王承玉颜湘莲宋杲陈海伦鲁钢程鹏
Owner CHINA ELECTRIC POWER RES INST