Mutual inductor insulating oil degassing device and degassing method thereof

Abstract

The invention discloses a mutual inductor insulating oil degassing device and a degassing method thereof. The device comprises a vacuum flasher, and an oil inlet pipeline, an oil outlet pipeline, a drainage pipeline and an exhaust pipeline which are connected with the vacuum flasher, wherein the oil inlet pipeline and the oil outlet pipeline are respectively butted with the mutual inductor; a bypass pipeline is arranged between the oil inlet pipeline and the oil outlet pipeline; and a cooler is arranged on the oil outlet pipeline. The method comprises the following steps: S1, absorbing oil of an expander of the mutual inductor; S2, degassing and butting; S3, degassing; S4, cooling; and S5, discharging oil. The device disclosed by the invention has the advantages that the operation is simple, the core of the mutual inductor can be prevented from being polluted, and the filtering and degassing effects are good.

Description

technical field [0001] The invention mainly relates to a power transformer maintenance technology, in particular to a transformer insulating oil degassing device and a degassing method thereof. Background technique [0002] The traditional transformer degassing process is mainly divided into the following steps: 1. First discharge the oil in the transformer to an oil container; 2. Perform hot oil circulation on the insulating oil for a sufficient time; 3. Dispose of the qualified insulating oil Inject into the transformer to the appropriate oil level; 4. Continue to carry out hot oil circulation on the oil in the transformer for a sufficient time; 5. Shut down, stand still and test. [0003] The traditional transformer degassing method has the following defects and deficiencies: in step 1, since the oil is exposed to air and discharged, it is very likely that gas and moisture will be mixed in the discharge process, which increases the difficulty of degassing; in step 2, the ...

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Problems solved by technology

[0003] The traditional transformer degassing method has the following defects and deficiencies: in step 1, since the oil is exposed to air and discharged, it is very likely that gas and moisture will be mixed in the discharge process, which increases the difficulty of degassing; in step 2, the transformer core The submersible has been in direct contact with the air, which increases the possibility of secondary pollution; in step 3, the insulating oil is generally at a high temperature of about 60°C. After cooling and standing still, the oil level may drop or even the oil level gauge will not show. number, negative pressure and other adverse working conditions appear in the transformer; step 4 is mainly to remove the moisture and gas in the core of the transformer, but because the gas has been immersed in the core, the filtering effect may not be ideal, and it needs to be carried out Long vacuum filtration may achieve the expected effect; in step 5, since the whole process of oil injection and hot oil circulation is in a high temperature environment, after standing for cooling, it is very likely that the low oil level and internal Negative pressure and other issues

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