A transformer standard oil degassing device and degassing method for on-line chromatographic calibration

Abstract

The invention discloses a transformer standard oil degassing device and degassing method for online chromatography calibration. The degassing device comprises a degassing container for containing standard oil and a cover with a gas diffusion head; the cover is covered on the top end of the degassing container; the gas diffusion head is arranged in the degassing container and is close to the bottom end of the degassing container; the gas diffusion head is connected to the cover through a stainless steel air inlet pipe, and a gas inlet soft pipe, which is communicated with the stainless steel air inlet pipe, is arranged on the top end of the cover and is used to introduce nitrogen gas into the container. The provided device is simple, the cost is low, the waste of standard oil is greatly reduced, large and pricy equipment is not required, the resource utilization rate is improved, and the environmental pollution caused by direct discharge or improper treatment method is avoided. The degassing method is simple and easy to do, the treatment is rapid, the degassing effect is good, and the application requirements of online chromatography calibration in a lab can be completely fulfilled.

Description

technical field [0001] The invention belongs to the technical field of on-line chromatographic monitoring of transformer oil for electrical equipment, and relates to a degassing device and a degassing method for transformer standard oil used for on-line chromatographic verification. Background technique [0002] Using gas chromatographic analysis technology of dissolved gases in transformer oil to monitor the operation status of transformers has become a recognized effective means to ensure the safe operation of transformers. With the advancement of ultra-high voltage in large power grids, traditional laboratory chromatographic analysis has the disadvantages of strict and cumbersome sampling operations and long experiment cycles, which can no longer meet the requirements of on-site production. Real-time supervision of electrical equipment such as transformers is particularly important. At present, on-line chromatographs have been widely used in the power sector, but the qual...

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Problems solved by technology

Due to limited laboratory conditions and no need for mass production, equipment such as vacuum oil purifiers not only occupy the experimental space, but also increase costs, reduce resource utilization, and take a long time to degas, which is not conducive to the development of test and detection work.

The traditional nitrogen bubbling degassing method has low efficiency, large nitrogen consumption, and it is difficult to meet the standard of blank new transformer oil. Moreover, the replacement efficiency of ordinary straight-through pipelines is very low due to the small surface area in contact with oil.

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