Oil sampling tool for main transformer

Abstract

The invention discloses an oil sampling tool for a main transformer. The oil sampling tool comprises a sampling bottle (1), a waste oil bottle (2) and vacuumizing sampling equipment (3). One end of a main transformer oil pipe (4) is extended into the sampling bottle (1). An oil drain valve (5) is arranged on the main transformer oil pipe (4). The end, extended into the sampling bottle (1), of themain transformer oil pipe (4) is provided with a sampling valve (6) which is positioned in the sampling bottle (1). The bottom of the sampling bottle (1) is provided with an oil leakage port I (7) and an oil leakage port II (8). The oil leakage port I (7) is communicated with the waste oil bottle (2) by a pipeline I (9). The oil leakage port II (8) is communicated with an inlet of the vacuumizingsampling equipment (3) by a pipeline II (10). The oil sampling tool not only can effectively protect an environment, but also can achieve good sampling effects and ensure high measurement accuracy.

Description

technical field [0001] The invention relates to an oil sampling tool for a main transformer. Background technique [0002] At present, due to the development of condition-based maintenance, the power outage cycle of equipment is extended, while the cycle of non-power outage test items such as oil testing is shortened. The chromatographic cycle of the main transformer oil of 220kV and above is 3 months, and the chromatographic cycle of 110kV and below is 6 months. The frequency of oil sampling for the main transformer is greatly increased. Usually the on-load sampling valve of the main transformer is connected to the main transformer body through a long section of oil pipe, but the oil samples of this oil pipe are often seriously polluted and cannot truly reflect the oil samples of the main transformer body, so we take oil samples Usually, it is necessary to drain the oil in the oil pipeline to get the oil sample of the oil body. Although the sampling valve of the main trans...

AI Technical Summary

Problems solved by technology

Usually the on-load sampling valve of the main transformer is connected to the main transformer body through a long section of oil pipe, but the oil samples in this section of oil pipe are often seriously polluted and cannot truly reflect the oil samples of the main transformer body, so we take oil samples Usually it is necessary to drain the oil in the oil pipeline to get the oil sample of the oil body. Although the sampling valve of the main transformer is close to the main transformer body, the valve opening is larger than the diameter of the sampling bottle mouth, making the sampling Transformer oil is easy to drip around the sampling valve during oil sampling, polluting the environment and affecting the cleanliness of the substation

Defects of the current oil sampling: the current oil-chemical team usually takes oil samples directly by using plastic barrels to release the contaminated oil in this section of the oil pipeline. It is easy to drip and leak a lot of transformer oil on site, which is easy to damage the site environment. The pipeline is long and the oil drain valve port is large. Even if a lot of oil is put in, there is still a lot of contaminated oil remaining at the oil drain port, so that the oil sample taken out cannot truly reflect the quality of the transformer oil.

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