Transformer tap changer tool for taking oil sample

Abstract

The invention belongs to the technical field of transformer equipment and more particularly to a transformer tap changer tool for taking an oil sample. The transformer tap changer tool comprises a bottom plate, a connection structure connected to an oil drain pipe, a drainage structure and a guiding structure. The connection structure and the drainage structure are disposed on the bottom plate. The guiding structure is connected to the drainage structure. The transformer tap changer tool is simple in structure and convenient to operate. The oil sample can be taken by removing the dustproof plate of the original ball valve of the oil drain pipe and then installing the transformer tap changer tool. The transformer tap changer tool has a good sealing property and can prevent the oil sample from contact with outside air to improve sample extraction accuracy and sampling efficiency.

Description

technical field [0001] The invention belongs to the technical field of transformer equipment, and more specifically provides a transformer tap changer tool for taking oil samples. Background technique [0002] In the maintenance work of power system equipment, it is very important to ensure the reliable and stable operation of voltage transformers. The insulating oil of the transformer tap changer in the substation needs to be sampled and tested for breakdown voltage and moisture content at regular intervals. However, most of the current tap changers do not have a special sampling port for insulating oil, and the oil sample is obtained from the oil discharge pipe at the bottom of the tap changer. When taking oil, the outflow of insulating oil is controlled by a ball valve. However, the ball valve generally has a large opening, and it is difficult to control the direction and amount of insulating oil outflow. If the oil sample is allowed to flow out along the valve surface, ...

AI Technical Summary

Problems solved by technology

However, at present, most tap changers do not have a special sampling port for insulating oil, and the oil sample is obtained from the oil drain pipe at the bottom of the tap changer.

When taking oil, the outflow of insulating oil is controlled by a ball valve. However, the ball valve generally has a large opening, and it is difficult to control the direction and amount of insulating oil outflow. If the oil sample is allowed to flow out along the valve surface, the oil sample is very vulnerable Dust, rust pollution, and direct sampling is easy to bring air bubbles to make the sample damp, making the oil sample lose representativeness, resulting in inaccurate oil sample test results, which cannot reflect the real situation of the oil quality inside the tap changer

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