Oil-gas separation device for transformer insulation oil

Abstract

The invention discloses an oil-gas separation device for transformer insulation oil, which comprises an oil passing component, an air pump, a degassing module, an electromagnetic valve set component and a gas collection detection circulation component. The air pump, the degassing module, the electromagnetic valve set component and the gas collection detection circulation component are connected through gas pipes. The degassing module comprises a sealed cavity body and a macromolecule micropore capillary pipe arranged in the sealed cavity body, an oil inlet and an oil outlet of the sealed cavity body are respectively connected with the oil passing component, and a gas outlet of the sealed cavity body is connected with a gas inlet of the gas pump through two ports of a four-way pipe. The oil passing component comprises a first oil valve, a transformer, a second oil valve and an oil pump, wherein an inlet of the first oil valve is connected with the oil outlet of the sealed cavity body, and an outlet of the oil pump is connected with the oil inlet of the sealed cavity body. The oil-gas separation device prevents air or other gases from being mixed in the transformer oil, effectively avoids overflowing of oil vapor, and can protect analyzing equipment from being polluted by the oil vapor. Furthermore, gas analysis in online transformer oil cannot lead vacuum degree of a transformer to reduce.

Description

technical field [0001] The invention relates to the field of on-line monitoring of electrical equipment, in particular to an oil-gas separation device for transformer insulating oil. Background technique [0002] The transformer is the most important equipment in the power transmission and transformation system, and its operating status directly affects the safe operation of the system. Once a transformer accident occurs, the direct and indirect economic losses caused are very large. For a long time, judging the insulation status of transformers based on the results of preventive tests and gas chromatography analysis of dissolved gases in oil has played a great role in preventing accidents. However, regular preventive tests do not take into account the actual condition of the equipment, may lead to excessive maintenance and unnecessary downtime, and may not be able to detect defects in time. Therefore, it is very necessary to monitor the transformer on-line and diagnose it...

AI Technical Summary

Problems solved by technology

There are still some shortcomings in the chromatographic analysis technology based on gas in oil, for example: (1) The detection process will consume sample gas and carrier gas; (2) The performance of the chromatographic column and sensor will gradually change during long-term use. , the monitoring device needs to be calibrated regularly with standard gas; (3) The chromatographic analyzer has poor reliability and takes a long time to collect data, especially the large dispersion of data and unreliable judgment

[0003] However, the existing photoacoustic spectroscopic analysis system for gas in transformer oil mostly uses the headspace degassing method, which makes the air mixed into the transformer oil during the test process and the oil vapor is easy to contaminate the photoacoustic cavity.

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