Main transformer regeneration breather with frequency conversion control and bidirectional microwave heating functions and use method of breather

Abstract

The invention provides a main transformer regeneration breather with frequency conversion control and bidirectional microwave heating functions and a use method of the breather. The breather comprises a frequency converter controller, an upper frequency conversion microwave heating device, a lower frequency conversion microwave heating device, a first moisture absorption tank, a second moisture absorption tank, a three-way pipe, a first humidity sensor and a second humidity sensor. According to the breather provided by the invention, the problems of manual replacement during moisture absorption saturation failure of a moisture absorption agent, major potential safety hazards due to exiting of a main transformer heavy gas protection device in a replacement process and the like for a conventional large-sized main transformer breathing device are solved by a bidirectional microwave heating drying regeneration technology; due to the use of the frequency converter controller, the microwave emission frequency of a microwave generator can be controlled according to the moisture absorption degree of the moisture absorption agent, so that the moisture absorption agent in the breather can be uniformly heated and dried; the breather has the huge advantages of being high in efficiency and safe to use.

Description

technical field [0001] The invention relates to a regenerative respirator, in particular to a main inverter regenerative respirator with frequency conversion control and bidirectional microwave heating. Background technique [0002] When the main transformer is in operation, it will breathe with the outside air through the breathing tube. If there is no respirator installed on the breathing tube, the main transformer will directly inhale the humid air from the outside. Especially in rainy and humid weather, the main transformer is more likely to be damp. The traditional main transformer breathing device is equipped with a color-changing silica gel hygroscopic agent. When the hygroscopic agent becomes saturated with moisture, the staff needs to bring a qualified and dry hygroscopic agent or a hygroscopic tank filled with a qualified hygroscopic agent to the main transformer site for replacement. During the replacement process The breathing tube of the middle main transformer ...

AI Technical Summary

Problems solved by technology

The traditional main transformer breathing device is equipped with a color-changing silica gel hygroscopic agent. When the hygroscopic agent becomes saturated with moisture, the staff needs to bring a qualified and dry hygroscopic agent or a hygroscopic tank filled with a qualified hygroscopic agent to the main transformer site for replacement. During the replacement process The breathing tube of the middle main transformer is directly connected with the outside atmosphere, which will cause the breathing air flow of the main transformer to change, which may lead to a serious failure of the main transformer gas relay heavy tile malfunction. Therefore, the traditional main transformer breathing device must replace the main transformer heavy tile It can only be carried out after the protection device is withdrawn, and the withdrawal time is as long as 3-4 hours

[0003]Heavy tile protection is one of the most important protection devices for the operation of the main transformer. Action to trip the main transformer switch to prevent further expansion of the accident. If the heavy tile is pulled out at this time, the main transformer switch will not be cut off, resulting in the expansion of the accident and even serious consequences of the main transformer explosion.

The protection device for removing heavy tiles needs to be approved by the chief engineer of the unit, and the operating personnel make a special trip to the main control room of the substation to operate, which is labor-intensive, time-consuming and expensive

[0004] Another disadvantage of the traditional main transformer breathing device is that when changing the color-changing silica gel, after removing the moisture absorption tank, the breathing airflow of the main transformer is directly communicated with the outside atmosphere, making it easy for moisture and water to invade the main transformer oil through the breathing tube of the main transformer. And changing the hygroscopic agent will cause waste, and it is also easy to pollute the environment

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