Cooling device for dry-type transformer and using method

Abstract

The invention relates to a cooling device for a dry-type transformer. The cooling device comprises a cooling chamber, a refrigerating system and a control module. The cooling chamber is divided into an upper shell and a lower shell, round holes for a high-voltage sleeve and a low-voltage sleeve to penetrate through are formed in the top of the upper shell, and the portions, penetrating out of the round holes, of the sleeves are sealed tightly by sealing rings; the dry-type transformer is fixed in a cavity of the cooling chamber, a refrigerant medium circularly flows in the cooling chamber, and refrigeration cycle is performed on the refrigerant medium by the refrigerating system, so that the requirement for cooling the dry-type transformer through the refrigerant medium is met; an inlet valve for the refrigerant medium to enter is installed on the lower portion of the side face of the cooling chamber, an outlet valve for the refrigerant medium to exit is installed on the upper portion of the other opposite side face of the cooling chamber, and a temperature sensor is installed on the upper portion of the side face of the cooling chamber; the control module is electrically connected with the temperature sensor and a refrigeration compressor in the refrigerating system and automatically controls the refrigeration compressor to work according to on-line temperature valves measured and transmitted by the temperature sensor.

Description

technical field [0001] The invention relates to a dry-type transformer cooling device and a using method. Background technique [0002] During the operation of the dry-type transformer, under the action of electricity and magnetism, its winding and iron core will generate heat. Due to the unique design and operation mode of the dry-type transformer, its own heat dissipation effect is very poor. If the heat cannot be taken away in time at this time , will lead to serious accidents of dry-type transformer burning or even explosion. Traditional dry-type transformers are cooled by fans or natural cooling. The cooling efficiency of these two cooling methods is very low, the cooling range is small, and they are greatly affected by environmental factors. , often lead to dry-type transformers with many shortcomings such as large copper and iron losses, small overload and short-circuit resistance capabilities, short insulation life, and insufficient safety levels. Contents of the i...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the dry-type transformer, under the action of electricity and magnetism, its winding and iron core will generate heat. Due to the unique design and operation mode of the dry-type transformer, its own heat dissipation effect is very poor. If the heat cannot be taken away in time at this time , will lead to serious accidents of dry-type transformer burning or even explosion. Traditional dry-type transformers are cooled by fans or natural cooling. The cooling efficiency of these two cooling methods is very low, the cooling range is small, and they are greatly affected by environmental factors. , often lead to many shortcomings such as large copper and iron losses of dry-type transformers, small overload and short-circuit resistance capabilities, short insulation life, and insufficient safety levels.

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