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Forced circulation evaporation-cooled device for stator winding of wind driven generator

A wind turbine, evaporative cooling technology, applied in the direction of cooling/ventilation device, electromechanical device, shape/style/structure of winding conductor, etc., can solve the problem of reducing the operating reliability of the unit, the workload of installation and maintenance, and the non-adjustable cycle power. and other problems to achieve the effect of reducing the number of circulating branches, reducing maintenance costs, and improving safety and reliability

Inactive Publication Date: 2011-08-17
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will bring a lot of workload to the manufacture, installation and maintenance of the unit, increase the cost, and reduce the reliability of the unit operation.
Moreover, since the circulation power is not adjustable, when multiple circulation branches are connected in parallel, there may be serious uneven flow distribution, which will aggravate the instability in parallel connection

Method used

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  • Forced circulation evaporation-cooled device for stator winding of wind driven generator
  • Forced circulation evaporation-cooled device for stator winding of wind driven generator
  • Forced circulation evaporation-cooled device for stator winding of wind driven generator

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] The forced circulation evaporative cooling device of the stator winding of the wind power generator is formed by a plurality of evaporative cooling circuits connected in parallel, and each evaporative cooling circuit is formed by a plurality of circulation branches connected in parallel. One circulation loop corresponds to one condenser, and each circulation loop can use an independent circulation pump, or multiple circulation loops can share the same circulation pump. In the entire forced circulation evaporative cooling device, multiple condensers are usually used in parallel.

[0025] The evaporative cooling device of the present invention has an inclination angle of 3-5°.

[0026] Such as figure 1 Shown is a circulation branch of a forced circulation evaporative cooling device for a wind turbine stator winding. The stator winding i...

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Abstract

The invention provides a forced circulation evaporation-cooled device for a stator winding of a wind driven generator, which is formed by a plurality of evaporation-cooled circuits in parallel connection, wherein each evaporation-cooled circuit is connected with a plurality of circulation branches (1) in parallel; the front end of each circulation branch (1) is connected to a gas collecting tube (2) by an insulating joint (8) and a connecting pipeline (9); the gas collecting tube (2) is connected with the cooling space of a condenser (3), and the cooling space of the condenser (3) is connected with an inlet end of a liquid-returning tube (4); an outlet end of the liquid-returning tube (4) is connected to an external liquid-collecting tube (5), and the external liquid-collecting tube (5) is connected with an inlet end of a circulating pump (6); an outlet end of the circulating pump (6) is connected to an internal liquid-collecting tube (7); and the internal liquid-collecting tube (7) is connected with the back end of each circulation branch (1) by an insulating joint (10) and a connecting pipeline (11). A liquid evaporation-cooled medium is injected into the evaporation-cooled circuits.

Description

technical field [0001] The invention relates to an evaporative cooling device for a wind power generator. Background technique [0002] With the research and utilization of renewable energy receiving more and more attention, the development of wind power technology is advancing by leaps and bounds. At present, increasing the capacity of a single unit has become the development trend of today's wind power technology, and the increase in capacity puts forward higher requirements for its cooling system. There are two main cooling methods commonly used in currently operating wind turbines: air cooling and liquid cooling. [0003] Both natural air cooling and forced air cooling are air cooling methods. Natural air cooling generally refers to using natural wind to cool the motor. This method generally requires processing a large area of ​​heat sink outside the motor casing, which is more complicated and natural. Wind pressure and air volume cannot be adjusted. Forced air coolin...

Claims

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Application Information

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IPC IPC(8): H02K9/19H02K3/22
Inventor 郭卉闫静田新东顾国彪
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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