Manufacturing method of oil-immersed transformer optical fiber temperature measurement probe

Abstract

The invention discloses a method for manufacturing an optical fiber temperature measuring probe of an oil-immersed transformer. The method comprises the following steps of preparing a two-component addition type organic silicon pouring sealant of which the light transmittance is higher than a preset light transmittance; mixing the double-component addition type organic silicon pouring sealant withfluorescent powder according to a preset proportion to obtain a mixed solution; injecting the mixed solution into a forming cavity of a manufacturing tool, and inserting the head of the optical fiberinto the mixed solution in the forming cavity; heating the manufacturing tool loaded with the mixed solution and the optical fiber for a preset time at a preset temperature, curing the mixed solutionto form a temperature measuring probe, and taking out the temperature measuring probe. According to the manufacturing method of the oil-immersed transformer optical fiber temperature measuring probe,the fluorescent temperature measuring probe is manufactured by adopting the double-component addition type organic silicon pouring sealant and the fluorescent powder, can bear 10N tensile force, doesnot fall off, is resistant to high temperature and high pressure, small in size, easy to install, resistant to extrusion, low in cost, simple in manufacturing process, reliable in quality and long inservice life, and can be rapidly produced in batches; and popularization to various industrial and civil occasions is facilitated.

Description

technical field [0001] The invention relates to the technical field of optical fiber temperature measuring probes, in particular to a method for manufacturing an optical fiber temperature measuring probe of an oil-immersed transformer. Background technique [0002] The temperature of the transformer winding determines the performance and aging speed of the transformer. When the insulation temperature of the transformer winding is in the range of 80-130°C, every time the temperature rises by 6°C, the insulation aging speed will double, that is, every time the temperature rises by 6°C, the insulation The life is reduced by 1 / 2, which is the "six degrees rule" of insulation aging. If the winding hot spot temperature is too high, the life of the transformer will be greatly shortened, and even cause a fire; if the temperature is too low, the operating efficiency of the transformer will be greatly reduced, resulting in certain economic losses. Therefore, the reliable monitoring...

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Problems solved by technology

[0005] At present, the fluorescent optical fiber temperature measurement probe is mainly made of glass, metal or ceramics and other materials through some special processes to seal the phosphor powder and the optical fiber. However, these solutions are complex in process, high in cost, and the probe is relatively fragile. It will be damaged or deformed, which is not conducive to popularization; moreover, the optical fiber fixing block used to embed in the groove of the transformer insulation pad is connected with the optical fiber through a physical buckle, and there is a certain risk of falling off, so it is necessary to find a solution that can solve this problem. method for class problems

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