FRP (fiber-reinforced plastic) isolated sleeve for evaporating and cooling wind motor stator and sealing device thereof
A technology for wind power generators and isolation sleeves, applied in cooling/ventilation devices, electromechanical devices, electrical components, etc., can solve the problems of increasing motor loss and reducing motor efficiency, so as to improve efficiency, reduce weight and volume, and improve The effect of stiffness
Active Publication Date: 2012-11-21
愿景动力有限公司
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Problems solved by technology
The key technology of this cooling method is the production and sealing of the stator cavity isolation sleeve. The patent provides a non-magnetic stainless steel isolation sleeve. Although it can solve the sealing problem, it will generate a large amount of heat on the metal isolation sleeve Although the heat generated by the eddy current loss can be taken away by the evaporative cooling medium so that the temperature is not too high, it greatly increases the loss of the motor and reduces the efficiency of the motor
Method used
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Embodiment Construction
[0027] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0028] The evaporative cooling of the wind turbine stator is a closed space composed of the motor condenser, the stator casing, the fiberglass isolation sleeve and its sealing device. During the heat exchange process, the cooling medium is sealed and self-circulating without a pump in this space.
[0029] Such as figure 1 As shown, the condenser 1 is placed on the top of the motor, the condenser 1 is sealed and connected with the stator casing 4 below, the stator casing 4 is connected with the sealing end cover 10, and the end cover O-shaped sealing rubber ring 5 is used to realize the end face sealing . See figure 1 Partial enlarged view of , the sealing end cap 10 is in contact with the FRP isolation sleeve 20, the inner circular surfaces at both ends of the FRP isolation sleeve 20 are supported by the sealing pressure ring 30, and a sea...
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The invention discloses an FRP (fiber-reinforced plastic) isolated sleeve for evaporating and cooling a wind motor stator and a sealing device thereof, comprising an FRP isolated sleeve, sealing end covers at two ends of the FRP isolated sleeve, a sealing press ring, a sealing rubber ring and a sealing washer; and the FRP isolated sleeve, the sealing device, a generator stator casing and a condenser form a stator evaporating and cooling sealing chamber. In the invention, the motor evaporating and cooling system is improved and perfected, the weight of the isolated sealing sleeve can be reduced, the vortex flow loss is not generated on the isolated sleeve, and the motor efficiency is improved. The FRP isolated sleeve adopts two assembling modes: a direct assembling mode and a bonding mode;when the bonding mode is adopted, the flexibility of the FRP isolated sleeve is reduced, the stiffness of the isolated sleeve is greatly improved, and the safety and the reliability are improved.
Description
technical field [0001] The invention relates to an evaporative cooling system of a stator of a wind power generator, in particular to an insulating sleeve and a sealing device of the evaporative cooling system. Background technique [0002] In the prior art, there are two cooling methods used for the stator core, the winding coil and the fixed components of the wind power generator: air cooling and liquid cooling, and these two cooling methods have their own characteristics. [0003] Air cooling has a simple structure, requires less additional parts, is easy to maintain, and is the most widely used. However, the heat transfer coefficient of the air is low, the cooling channel is not easy to arrange, the temperature distribution of the stator and rotor cores and windings of the motor is uneven, hot spots may appear, damage the winding insulation, and reduce the service life; in addition, the power density of the motor is small, and the size of the motor is large , The materi...
Claims
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IPC IPC(8): H02K9/19
Inventor 余顺周杨劼田新东顾国彪
Owner 愿景动力有限公司