Multi-channel switchable electric heating dryer

Abstract

The invention relates to a multi-passage switchable electric heating dryer, which comprise a first passage switcher, a plurality of moisture-absorbing barrels and a second passage switcher; one end of the first passage switcher is connected with the inlets of the moisture-absorbing barrels, the other end of the first passage switcher communicates with the atmosphere, and the first passage switcher is used for switching passages between the moisture-absorbing barrels and the atmosphere, so that part of the moisture-absorbing barrels can communicate with the atmosphere and the rest of the moisture-absorbing barrels cannot communicate with the atmosphere; one end of the second passage switcher is connected with the outlets of the moisture-absorbing barrels, the other end of the second passage switcher respectively communicates with the atmosphere and a drying destination, and the second passage switcher is used for switching passages between the moisture-absorbing barrels and the atmosphere as well as the drying destination, so that part of the moisture-absorbing barrels can communicate with the atmosphere and the rest of the moisture-absorbing barrels can communicate with the dryingdestination; and a barrel body of each moisture-absorbing barrel is provided with a heating part for drying the moisture-absorbing barrel. The multi-passage switchable electric heating dryer can dry the silica gel and the air in the dryer in a switching manner, thus prolonging the service life of the silica gel, solving the problem of complex process switching and enhancing the safety stability of a transformer.

Description

technical field [0001] The invention relates to a switchable electric heating drier, in particular to a multi-channel switchable electric heating drier. Background technique [0002] Respirator, also known as moisture absorber, is an auxiliary safety protection device of the transformer, and its interior is filled with desiccant such as silica gel. The gas entering the respirator must be dry to prevent the humid gas from entering the oil pillow capsule, condensing into water and penetrating into the transformer, increasing the water content of the transformer oil, deteriorating the oil quality and reducing the insulation strength, which is the main insulation abnormality of the main transformer. It will seriously affect the reliable operation of the transformer equipment. [0003] Traditional respirator structure such as figure 1 As shown, it is composed of a nylon net cover 1, a cylinder body 2, a silica gel column 3, an upper sealing cover 4 and a connecting pipe 5. The ...

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Problems solved by technology

[0004] The purpose of this invention is to overcome the shortcomings of the traditional respirator, such as the short service life of silica gel and the difficulty in operation, maintenance and replacement, and to invent a multi-channel switchable device that can prolong the use time of silica gel, reduce the frequency of replacement, and reduce the difficulty of respirator maintenance. electric heating dryer

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