A maintenance-free dehumidifier

Abstract

The invention discloses a maintenance-free moisture absorber, related to the technical field of moisture absorbers. The moisture absorber comprises a moisture absorber body and a controller arranged outside the moisture absorber body; the moisture absorber body comprises a shell, a stainless steel mesh cover sleeved inside the shell and a heater arranged inside the stainless steel mesh cover; thestainless steel mesh cover comprises an outer mesh cover in the shape of a ring column and an inner mesh cover which is sleeved inside the outer mesh cover and has a ring column shape; a mesh cover interlayer is formed between the outer mesh cover and the inner mesh cover; the mesh cover interlayer is filled with a desiccant, an upper mesh cover for blocking the desiccant overflow is arranged above the mesh cover interlayer, and a moisture absorbing pipe is also arranged in the mesh cover interlayer; the moisture absorbing tube is spirally wound around the outside of the inner mesh cover and is in contact with the desiccant; the lower end of the moisture absorbing pipe leads to the outside of the moisture absorber body; and the heater is sleeved inside the inner mesh cover. The maintenance-free moisture absorber does not require replacement of the desiccant; therefore, the maintenance-free purpose is achieved.

Description

technical field

[0001] The invention relates to the technical field of moisture absorbers, in particular to a maintenance-free moisture absorber. Background technique

[0002] Oil-immersed transformers are exposed to humid air for a long time, which may easily cause circuit short circuit and damage the transformer. Therefore, a dehumidifier is needed to dehumidify the air. The dehumidifier is an automatic air moisture absorption and purification device designed for oil-immersed transformers. On the transformer oil conservator, when the volume of the transformer oil expands and contracts due to changes in load or ambient temperature, the gas in the oil conservator is forced to breathe through the desiccant in the dehumidifier, which removes impurities in the incoming air. substances and moisture, thereby maintaining the dielectric strength of the transformer oil. However, in the prior art, after the desiccant in the desiccant absorbs moisture, the moisture in the desiccant c...

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