Liquid metal based converter valve cooling system

A liquid metal and cooling system technology, applied in the direction of output power conversion device, cooling/ventilation/heating transformation, power transmission AC network, etc., can solve problems such as limited heat dissipation capacity, reduce accumulation, lower temperature, and improve reliability Effect
CN105529906APending Publication Date: 2016-04-27GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
Publication Date
2016-04-27

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Abstract

The invention provides a liquid metal based converter valve cooling system. The liquid metal based converter valve cooling system comprises a liquid metal heat sink, a first heat exchanger and a second heat exchanger which are sequentially connected, wherein the liquid metal heat sink comprises a liquid metal pipeline arranged in a hollow cavity in the liquid metal heat sink, the first heat exchanger comprises a first pipeline and a second pipeline which are arranged in a hollow cavity in the first heat exchanger, the second heat exchanger comprises a third pipeline arranged in a hollow cavity in the second heat exchanger, the liquid metal pipeline is connected with the first pipeline to form a liquid metal circulation loop, and the second pipeline and the third pipeline are connected to form a deionized water circulation loop. Compared with the prior art, the liquid metal based converter valve cooling system provided by the invention has the advantages that the liquid metal has very high heat conduction capability, heat of a converter valve can be rapidly taken away and is finally dissipated to air through the external heat exchangers, heat accumulation at a hot source can be reduced, and the temperature of a hot source is reduced.
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Description

technical field

[0001] The invention relates to the technical field of power semiconductor devices, in particular to a liquid metal-based converter valve cooling system. Background technique

[0002] In recent years, the UHV DC transmission market at home and abroad has developed rapidly, and the market prospect is very broad. As the core equipment of the UHV DC transmission project, the converter valve is the core functional unit to realize AC-DC conversion, and the cooling effect of the cooling system in the valve body will directly affect the converter performance of the converter valve. Poor heat dissipation of the converter valve element will not only cause overheating and damage to the element, but also cause the DC system to shut down in severe cases. Therefore, the converter valve cooling system plays an important role in the direct current transmission system and needs to have very high reliability.

[0003] Due to its high specific heat, high thermal conductivity...

Claims

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