Arrangement for cooling components of subsea electric system
A technology of electrical systems and electrical components, applied in the direction of electrical equipment construction parts, electrical components, heat exchange equipment, etc., can solve the problems of cooling efficiency limitation, increasing the mechanical complexity of the system, etc.
Active Publication Date: 2016-11-23
ABB (SCHWEIZ) AG
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Problems solved by technology
This significantly increases the mechanical complexity of the system
[0009] Therefore, the cooling efficiency is limited, and the design of an economical cooling system can therefore be challenging
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[0025] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will The scope of the present invention fully conveys to those skilled in the art. Like reference numerals refer to like elements throughout the specification.
[0026] Cooling systems for electrical equipment and in particular for underwater electrical systems are used to cool electrical components such as power electronic components, semiconductor modules, connectors and capacitor units. Such electrical components generate heat that needs to be dissipated by the cooling system. The cooling system of a subsea power electronic converter unit is usually...
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There is presented an arrangement for cooling components of a subsea electric system. The arrangement comprises a tank filled with a dielectric fluid. The tank comprises a first section and a second section. The arrangement comprises at least one first electric component located within the first section. The arrangement comprises at least one second electric component located within the second section. The arrangement comprises a first heat exchanger located outside the tank and in fluid contact with the tank, and arranged to during operation be in thermal contact with sea water. The arrangement comprises a pump arranged to force a flow of the dielectric fluid through the first heat exchanger. Flow of the dielectric fluid in the tank is partially by natural convection and partially by forced convection generated by the pump. The at least one first electric component generates more heat than the at least one second electric component. Within the first section the share of the flow by natural convection is greater than within the second section.
Description
technical field [0001] The present invention relates to cooling devices, and in particular to devices for cooling components of subsea electrical systems, and to subsea electrical systems comprising such devices. Background technique [0002] In general, electrical underwater installations and equipment usually require high standards related to durability, long-term functionality and independence during operation. Electrical subsea installations that need to be cooled during operation, such as subsea transducers, require autonomous and durable cooling of their components. It is known to use low compressibility dielectric liquids such as mineral oil as cooling fluids. Dielectric fluids can also include natural or synthetic esters. Generally, dielectric fluids are used to provide a pressure compensating environment and additionally serve as an electrical insulation medium for electrical components placed in electrical equipment, such as capacitor cells. [0003] Tanks of po...
Claims
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CPCH05K7/20236H05K7/20927F28F13/12F28D15/00F28D1/022H05K7/14337H05K5/0017H05K7/20245H05K7/20263H05K7/20272H05K7/20409
Inventor T·格拉丁格T·拉内里德
Owner ABB (SCHWEIZ) AG