Multi-sampling-port insulating oil sampling valve

Abstract

The invention relates to a multi-sampling-port insulating oil sampling valve, wherein one sampling port is used for oil chemical analysis sampling in a laboratory, the other sampling port is used for insulating oil online monitoring system sampling, a chromatogram online sampling connecting port is arranged on a lateral wall of the valve body, the chromatogram online sampling connecting port and a stop valve thereof are arranged at two different positions respectively, the chromatogram online sampling stop valve is also arranged on the lateral wall of the sampling valve body, and the horizontal directions of the chromatogram online sampling connecting port and the chromatogram online sampling stop valve are on a same plane and are separated from each other by 90 degrees; and a sampling oil way passage of the chromatogram online sampling connecting port comprises that a sampling valve oil passage gets out of the chromatogram online sampling connecting port stop valve body and then enters the chromatogram online sampling connecting port. One valve member of the sampling valve can finish two types of samplings, has the function of respective individual control without an external switch valve, simplifies the mounting and effectively avoids oil leakage, and oil ways are safe and do not affect each other during working; besides, the multi-sampling-port insulating oil sampling valve not only can satisfy the oil chemical analysis sampling in the laboratory, but also can satisfy the insulating oil online monitoring system sampling.

Description

technical field [0001] The invention relates to a sampling valve for oil-filled electrical equipment, which is mainly used for sampling insulating oil of oil-filled electrical equipment. Background technique [0002] Large-scale oil-filled electrical equipment for electric power, such as transformers, reactors, etc., are filled with transformer oil as an insulating material. In order to detect the quality level of transformer oil, such as oil withstand voltage, dissolved gas content in oil, and micro-water content in oil, etc. To judge the safe operation status of the transformer, the national standard CB / T 7597-2007 "Sampling Method for Power Oil (Transformer Oil, Turbine Oil)" stipulates the sampling method for oil-filled electrical equipment. At present, whether it is the oil drain valve equipped with oil-filled electrical equipment or the sampling valve modified later, there is generally only one sampling port for laboratory oil chemical analysis. [0003] With the deve...

AI Technical Summary

Problems solved by technology

At present, whether it is the oil drain valve equipped with oil-filled electrical equipment or the sampling valve modified later, there is generally only one sampling port for laboratory oil chemical analysis.

[0003] With the development of power system condition monitoring technology, the online monitoring system of oil-filled electrical equipment insulating oil has been widely used. This type of system needs to sample in real time from the sampling port of the sampling valve during normal operation. The original sampling valve with a single sampling port can no longer To meet the requirements of this multi-functional sampling, many single sampling valves that have been modified mostly add components such as tees. There are many pipeline nodes, and oil leakage occurs from time to time

Especially in the installation of transformer equipment in substations, no oil leakage is allowed. If the external stop valve will increase the leakage points, in addition, some oil will leak during installation, which does not meet the requirements of the substation.

Therefore, this problem has not been solved, so the hidden dangers have greatly increased

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