Unequal interval symmetrical ventilating ducts for stators and rotors of air and water-cooled wind driven generator

A wind turbine, symmetrical ventilation technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, magnetic circuit static parts, etc., can solve the problems of high temperature in the middle and uneven temperature distribution of the iron core axis, etc. Achieve the effect of improving heat transfer capacity and solving uneven temperature distribution

Inactive Publication Date: 2013-03-20
DALIAN TIANYUAN ELECTRICAL MACHINERY
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AI Technical Summary

Problems solved by technology

[0005] The feature of the present invention is: adopting the structure of unequal-spaced symmetrical air ducts, which greatly improves the heat transfer capacity of the middle part of the iron

Method used

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  • Unequal interval symmetrical ventilating ducts for stators and rotors of air and water-cooled wind driven generator
  • Unequal interval symmetrical ventilating ducts for stators and rotors of air and water-cooled wind driven generator

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Example Embodiment

[0009] Such as figure 1 , 2 As shown, the present invention is an air-water-cooled wind power generator with unequal-spaced symmetrical ventilation ducts for the stator and rotor. The iron core 1 of the stator and rotor adopts a segmented press-fit structure, and the length of each iron core 1 is gradually decreasing and symmetrically distributed from the end to the middle , Ventilation slot plates 2 are provided between adjacent iron cores 1 to form radial air passages. The widths of the air passages of the stator and rotor are the same. After the iron cores 1 of the stator and rotor are press-fitted, the air passages are aligned, and then go offline and dipped. , Assembly and other procedures to complete the general assembly of the generator. When the generator is running, a symmetrical radial air path is formed. When the cooling air enters the iron core 1 of the stator and rotor, the symmetrical ventilation structure of the stator and rotor can make the iron core 1 The enhanc...

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Abstract

The invention discloses unequal interval symmetrical ventilating ducts for stators and rotors of an air and water-cooled wind driven generator. Iron cores of stators and iron cores of rotors are in a segmented press fitting structure, lengths of all segments of iron cores are symmetrically distributed in such a way that lengths are shortened gradually from end portions to middle portions, ventilating groove plates are arranged among adjacent iron cores to form ventilating ducts, widths of ventilating ducts for stators and rotors are consistent, and ventilating ducts are aligned after iron cores of stators and rotors are mounted in a pressing mode. The unequal interval symmetrical ventilating ducts have the advantages that the unequal interval symmetrical ventilating duct structure is adopted, so that the heat exchange capability of middle portions of iron cores, which is poor originally, is greatly improved, and the problems that original iron cores are uneven in temperature distribution in axis directions and the temperature of middle portions is too high are solved.

Description

technical field [0001] The invention relates to a large-power generator stator-rotor iron core ventilation structure, which belongs to the field of generator design, and in particular to an air-water-cooled wind-driven generator stator-rotor symmetrical ventilation channel with unequal spacing. Background technique [0002] Due to the relatively low power density of ordinary rotor wound motors, the length-to-diameter ratio of the iron core is less than 1, and the rotational speed is low, a traditional single-side centrifugal fan is used to form a hybrid cooling air path, and the air passages of the iron core are conventionally equidistant. It can meet the requirements of heat exchange, and high-power wind turbines have strict requirements on volume and weight, which makes the power density of the motor very high. High, wide range of variation, the traditional iron core ventilation channel design can not meet such requirements. Contents of the invention [0003] The purpos...

Claims

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Application Information

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IPC IPC(8): H02K1/20H02K1/32
Inventor 杨连春贾永波滕强梁君声陈福海刘永正孔凡杰
Owner DALIAN TIANYUAN ELECTRICAL MACHINERY
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