Maintenance-free intelligent moisture absorber for transformer

Abstract

A maintenance-free intelligent moisture absorber for a transformer comprises a drying chamber for drying gas, a top end of the drying chamber is provided with a flange connected with the breathing port of the transformer oil storage tank, a primary filter chamber for filtering air is arranged at the bottom end of the drying chamber, and a breathing state indicator indicating the breathing state ofthe transformer is connected at the bottom air port of the primary filter chamber through a three-way connecting pipe; the upper part of the drying chamber is provided with a two-stage filter screenwhich prevents the desiccant powder from entering the transformer oil storage tank when inhaling air. The invention can effectively prevent the harm of the silica gel powder in the desiccant to the oil storage cabinet on the basis of ensuring the air entering the oil storage cabinet to be dry, and at the same time, can visually display the respiration state of the transformer, thereby enabling theoperator to grasp the operation state of the transformer oil storage cabinet in time.

Description

technical field The invention relates to the technical field of transformers, in particular to a moisture absorber used on a transformer oil conservator. Background technique Transformer moisture absorber, also known as transformer breather, is a device equipped on general large and medium-sized transformers, and is used in the external gas breathing pipeline of the oil conservator. The basic structure of the transformer dehumidifier is composed of upper and lower covers, glass bodies, connectors, desiccant and joints at both ends. It is used for filtering and dehumidifying the breathing port of the transformer oil conservator to ensure that the air entering the transformer oil conservator is dry and avoids moisture in the air. Enter the transformer oil in the oil conservator to prevent the insulating oil of the transformer from aging. The desiccant used in the transformer dehumidifier usually uses silica gel desiccant. After long-term use, due to continuous wear and tear,...

AI Technical Summary

Problems solved by technology

The desiccant used in the transformer dehumidifier usually uses silica gel desiccant. After long-term use, due to continuous wear and tear, a lot of silica gel powder will appear. These powders will be absorbed into the airway of the dehumidifier as the transformer breathes. The continuous deposition of silica gel powder will cause dehydration. The airway is blocked, causing the oil conservator of the transformer to be unable to breathe, causing accidents; at the same time, some silica gel powder will be sucked into the oil conservator and deposited, shortening the life of the oil conservator

In addition, at present, most dehumidifiers for transformers generally have the problem of not being able to directly observe the breathing state of the transformer. Some manufacturers have installed a breathing state indicating device, but the indication is not intuitive and it is inconvenient to observe.

Some manufacturers have quoted the oil cup indicator structure of ordinary dehumidifiers. The oil cup is an open structure. After absorbing moisture and impurities, the transformer oil is easy to crystallize and block the breathing port. The transformer oil in the oil cup needs to be replaced regularly, which is not maintenance-free. Effect

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