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Non-homogeneous phase type power transformer for evaporative cooling

A power transformer and evaporative cooling technology, which is applied in the field of power transformers, can solve the problems of environmental protection and other disadvantages, and achieve the effects of improving operating efficiency, reducing load loss, and reducing the temperature coefficient of resistance

Active Publication Date: 2008-11-12
深圳市奥电高压电气有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The present invention will solve various problems existing in the cooling technology of existing transformers, especially the need to use SF 6 Environmental problems caused by gas

Method used

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  • Non-homogeneous phase type power transformer for evaporative cooling
  • Non-homogeneous phase type power transformer for evaporative cooling
  • Non-homogeneous phase type power transformer for evaporative cooling

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Embodiment Construction

[0040] The cooling of traditional power transformers is based on sensible heat, and the present invention introduces the phase change of the medium in the heat exchange process, which greatly improves the cooling efficiency. In the heat exchange process, the medium absorbs heat energy from the liquid phase to the gas phase. When the temperature drops to the evaporation temperature of the medium under the corresponding pressure, the gas phase medium releases latent heat and condenses into droplets. This process is called evaporative cooling.

[0041] When applying the evaporative cooling technology, according to the transformer characteristics and structure, the present invention studies the method of evaporative cooling heterogeneous boiling. Evaporative cooling heterogeneous means that the whole process of evaporation and condensation of the medium does not require external power, and the flow direction of the medium is non-directional. It can be seen from the following embodimen...

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Abstract

The invention relates to an evaporative cooling non-homogenous power transformer and aims at solving the problems existing in cooling technology of the transformer in prior art, the transformer of the invention comprises a box body, a transformer in the box body, and an evaporative cooling medium loaded in the box body, wherein, the evaporation temperature of the cooling medium is between 30 DEG C to 123 DEG C. The transformer body is immersed in the evaporative cooling medium and provided with a cooling device which is used for cooling the air medium flowing out by evaporation from the box body to condense the air medium into liquid which reflows into the cooling device in the box body. When the transformer works, the whole process of evaporation and condensation of the cooling medium does not need external power. Good and effective automatic circulating cooling is realized; operation temperature of the transformer is reduced and operation efficiency of the transformer is enhanced. The cooling medium (A HFC-8160) used in the process has good environmental protection ability and is much better than the sulfur hexafluoride used in the traditional technology.

Description

Technical field [0001] The invention relates to a power transformer, and more specifically, to an evaporative cooling non-homogeneous power transformer. Background technique [0002] The current representative power transformers mainly include oil-immersed cooling transformers, epoxy resin dry-type transformers, and SF 6 (Sulfur hexafluoride) gas transformers, the three represent transformers with three different cooling methods: liquid, solid, and gas. [0003] Among them, the oil-immersed transformer uses transformer oil as the cooling medium, which has good electrical performance but poor thermal conductivity. The oil quality will precipitate after a long time of use, and the maintenance workload is heavy. Transformer oil is easy to absorb moisture and has low temperature resistance. It can only operate safely below 105°C. In addition, transformer oil is easy to burn, which is the biggest disadvantage. Therefore, it is difficult for this type of transformer to enter the urban ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/08
Inventor 谢世英
Owner 深圳市奥电高压电气有限公司
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