System and method for drying transformer body
A technology of drying system and drying method, which is applied in the direction of transformer/inductor cooling, drying solid materials, and combination of methods to dry solid materials. It can solve the problems of high drying efficiency, good drying effect, short drying time, etc., and achieve drying efficiency. High, good drying effect, short drying time
Active Publication Date: 2013-04-24
NORTH CHINA ELECTRICAL POWER RES INST +2
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[0016] The purpose of the present invention is to provide a drying system and drying method for the defects of the existing drying system and drying method, using kerosene vapor to dry the transformer body in the transformer, the drying time is short, the drying efficiency is high, and the drying effect is it is good
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0039] The drying system and drying method of the present invention use the oil tank of the transformer itself without reusing the existing vacuum tank, and the heating of the transformer body uses kerosene vapor, which can perform heat exchange on the transformer body, and when the kerosene vapor becomes When it is kerosene, it can also release heat of condensation, which can heat the body of the transformer more efficiently. Therefore, the transformer body can be...
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The invention discloses a system and a method for drying a transformer body. The system comprises a transformer oil tank which is used for accommodating the transformer body and transformer oil, a vacuumizing device which is connected with the transformer oil tank and is used for vacuumizing the transformer oil tank to enable the transformer oil tank to form a vacuum chamber after the transformeroil tank is emptied, an evaporator which is connected with the transformer oil tank and is used for guiding kerosene steam formed by heating kerosene into the transformer oil tank to dry the transformer body, and a recycling device which is connected with the transformer oil tank and the evaporator and is used for condensing the kerosene steam recycled from the transformer oil tank into the kerosene and water after the transformer body is subjected to the drying treatment and returning the kerosene to the evaporator. By the system and the method, the transformer body is dried by the kerosene steam in the transformer oil tank, the drying time is short, the drying efficiency is high, and the drying effect is desirable.
Description
technical field [0001] The invention relates to a transformer body drying system and method, in particular to a transformer body drying system and method for drying transformers. Background technique [0002] There are many solid insulating materials distributed on the body of the transformer, such as inter-turn insulation of coils, braces, pads, laminated cardboard pressure rings and cardboard tubes, etc. These insulating materials are all made of fibrous insulating materials. One of the inherent characteristics of insulating materials is that after being damp or soaked, it will seriously affect the electrical strength, dielectric loss and water content of the material medium. [0003] figure 1 It is a schematic diagram of the relationship between the mass fraction of water in the insulating cardboard and the flashover voltage at different temperatures. Such as figure 1 As shown, when the water content of the insulating medium of the transformer increases, the characteri...
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IPC IPC(8): H01F27/14F26B7/00
Inventor 巩学海刘连睿马继先刘少宇王剑刘巍龚曜关庆罡杨大伟赵燕坤赵斌
Owner NORTH CHINA ELECTRICAL POWER RES INST