Oil-immersed type transformer cooling method and its system

An oil-immersed transformer and cooling system technology, which is applied in the direction of transformer/inductor cooling, etc., can solve the problems of small capacity and high transformer manufacturing requirements, and achieve the effects of long life, leakage avoidance and low investment

Inactive Publication Date: 2008-10-15
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the problem of high-efficiency heat dissipation of large-capacity transformers, and make up for the shortcomings of the existing technology of small capacity and high heat dissipation requirements for transformer manufacturing. The purpose is to provide a cooling method for oil-immersed transformers, that is, to provide an oil-immersed transformer. Double-cycle cooling method, that is, the transformer oil circulates in the closed transformer to bring heat to the heat exchanger, and the evaporative cooling medium circulates externally to transfer the heat of the heat exchanger to the air through the evaporation and condensation of the evaporative cooling medium

Method used

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  • Oil-immersed type transformer cooling method and its system
  • Oil-immersed type transformer cooling method and its system

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1: Oil-immersed transformer cooling system. This embodiment has figure 1 structure shown.

[0033] An oil-immersed transformer cooling system, comprising an oil-immersed transformer 1, a heat exchanger 2, and a condensing device 3, composed of a pipeline 4 connecting the oil-immersed transformer 1, the heat exchanger 2, and the condensing device 3; Type transformer 1 and heat exchanger 2 are connected through pipeline 4, and heat exchanger 2 and the condensing device 3 are connected through pipeline 4; Transformer oil is filled in oil-immersed transformer 1, and is filled with heat exchange through pipeline 4 The liquid evaporative cooling medium is stored in the evaporative cooling medium part of the heat exchanger 2, and the transformer oil transfers heat to the lower temperature liquid evaporative cooling medium through the heat exchanger 2. After the temperature of the liquid evaporative cooling medium rises Vaporization, the gaseous evaporative cooling...

Embodiment 2

[0036] Embodiment 2: Oil-immersed transformer cooling system. This embodiment has figure 2 structure shown.

[0037]A cooling system for an oil-immersed transformer includes an oil-immersed transformer 1 , a heat exchanger 2 , a condensing device 3 , a liquid evaporative cooling medium tank 5 , a circulation pump 6 and a connecting pipeline 4 . The oil-immersed transformer 1 and the oil circuit part of the heat exchanger 2 are connected through a pipeline 4, and the evaporative medium part of the heat exchanger 2 is connected with the liquid evaporative cooling medium tank 5 through a circulating pump 6, and the liquid evaporates The cooling medium box 5 and the condensing device 3 are connected through pipelines; the transformer oil is filled in the oil-immersed transformer 1, and the oil circuit part of the heat exchanger 2 is filled through the pipeline 4, and the liquid evaporative cooling medium is stored in the liquid evaporative Cooling medium box 5 , the gaseous eva...

example 2

[0038] The working principle of Example 2 is similar to that of Example 1, except that the circulation pump 6 accelerates the self-circulation of the evaporating liquid medium.

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Abstract

The invention relates to a cooling method for an oil-immersed transformer and a system thereof, and aims at providing a two-cycle cooling method for the oil-immersed transformer; the transformer oil of the oil-immersed transformer transmits heat to liquid evaporation cooling medium with low temperature by a heat exchanger, and the liquid evaporation cooling medium is vaporized after the temperature thereof rises; gaseous evaporation cooling medium is condensed into liquid by a condensing device, and the liquid reflows to the heat exchanger; another purpose of the invention is a cooling system of the oil-immersed transformer, and the oil-immersed transformer, the heat exchanger and the condensing device are connected together by a pipeline; the transformer oil is stored in the oil-immersed transformer and passes through the oil line part full of the heat exchangers of the pipelines, and the liquid evaporation cooling medium is stored in the evaporation cooling medium part of the heat exchanger; the adopted evaporation cooling medium is fluorocarbon. The cooling method and the system for the oil-immersed transformer solves the problem of large occupying field of the transformer cooling device and outside natural environmental impact and have the advantages of small occupy area, low noise, low energy consumption, safety and reliability.

Description

technical field [0001] The invention relates to a cooling method and system for an oil-immersed transformer. Background technique [0002] At present, oil-immersed transformers are mainly used in urban substations. Oil-immersed transformers rely on oil as the cooling medium. At present, there are mainly oil-immersed self-cooling methods (oil-immersed transformers + radiators), oil-immersed air-cooled methods (oil-immersed transformers + air-cooled) device + exhaust tube), oil-immersed water cooling (oil-immersed transformer + water cooler + cooling tower). [0003] The above-mentioned water-cooling and air-cooling methods both have noise and environmental protection problems for substations located in the center of the city. [0004] If it is a water-cooling method, it has high investment, high operation and maintenance costs, short life, high noise (cannot meet the environmental protection requirements of Class II and above), and has adverse effects on the surrounding env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/12H01F27/18
CPCH01F27/10
Inventor 姜益民
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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