Full-automatic oil-chromatography sample feeding device for transformer and operation method

Abstract

The invention discloses a fully automatic sampling device for transformer oil chromatography, which includes detection equipment, an oil-gas separation device, a gas tank, a gas collection device and an inspection device. The oil-gas separation device includes a degassing tank whose bottom can move, The bottom is connected with the tank bottom pushing device and the gravity compensation device. There is a stirring device in the degassing tank, and there are gas inlets, sampling ports, nitrogen gas inlets and oil outlets, gas inlets and gas collection devices on the degassing tank. Connection, the sampling port is connected to the sample, the nitrogen gas inlet is connected to the gas tank, and the oil discharge port is connected to the oil receiving tank. The present invention is aimed at the pretreatment process of laboratory gas chromatographic detection of dissolved gas components in transformer oil. The equipment is to automate the manual operation process originally required by technicians, so that the detection efficiency of oil-immersed transformers can be improved, and the detection efficiency can be reduced. The error introduced in the small pre-processing link saves manpower and has the value of popularization and application.

Description

technical field [0001] The invention relates to a transformer oil chromatographic automatic sampling device and an operation method, belonging to the technical field of power grid equipment detection. Background technique [0002] At present, in the fault diagnosis of oil-immersed transformers, chromatographic analysis is generally used to analyze dissolved gases in oil, so as to find problems in the transformer as early as possible and take countermeasures, which is an important means to supervise and ensure the safe operation of transformers. Of course, some oil-filled current transformers or voltage transformers and bushings can also judge the latent faults by detecting the gas components in the oil. Various detection schemes for transformer oil chromatography emerge in endlessly. For the main detection of main transformer oil Technologies include laboratory oil chromatography detection, online oil chromatography detection and portable oil chromatography detection, etc. T...

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Problems solved by technology

[0003] However, the current oil chromatography detection in the laboratory has many manual steps, the steps are cumbersome, and the detection requirements for the operator are high, and the operator must stick to it in the laboratory throughout the process.

Although the oil chromatography online monitoring technology can realize automatic sampling, it is limited to one oil sample and cannot realize the detection of multiple oil samples. In order to realize automatic sampling, it must be used in conjunction with the software developed by it, and it cannot be used with existing ones. It is used together with the laboratory oil chromatography detection software

Although portable oil chromatography can be detected on site, its operation process and steps are completely similar to those of laboratory oil chromatography detection, and the standard gas carried is consumed quickly, which is not conducive to the detection of multiple oil samples

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