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Combined insulating end cover for wind driven generator

A wind turbine and combined insulation technology, which is applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of poor insulation of wind turbine end covers, and achieve excellent performance, thick insulation thickness and short manufacturing cycle. Effect

Inactive Publication Date: 2017-09-12
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problem of poor insulation of the end cover of the existing wind power generator, and provides a combined insulating end cover of the wind power generator

Method used

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  • Combined insulating end cover for wind driven generator
  • Combined insulating end cover for wind driven generator
  • Combined insulating end cover for wind driven generator

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Embodiment Construction

[0011] The combined insulating end cover of the wind power generator includes the end cover body 1 and the bearing chamber 2; the inherent insulating connecting ring 3 is set between the end cover body 1 and the bearing chamber 2, that is, the inner ring surface of the end cover body 1 is sleeved on the insulating connection The outer ring surface of the ring 3 and the inner ring surface of the insulating connection ring 3 are sleeved on the outer ring surface of the bearing chamber 2 . The bearing chamber 2 is axially single-stepped, and the outer end face of the insulating connecting ring 3 is flush with the outer end faces of the end cover body 1 and the bearing chamber 2, thus ensuring that the insulating connecting ring 3 can only be sleeved in the large part of the bearing chamber 2. On the outer ring surface (the outer ring surface of the axially single-stepped bearing chamber is divided into large and small). In order to realize the fastening between the insulating con...

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Abstract

The invention relates to an end cover for a wind driven generator, specifically a combined insulating end cover for the wind driven generator. The invention solves a problem that the end cover of the wind driven generator is poor in insulation. The end cover comprises an end cover body and a bearing room. An insulating connection ring is fixed between the end cover body and the bearing room in a sleeving manner, i.e., enabling the inner annular surface of the end cover body to be connected to the outer annular surface of the insulating connection ring in a sleeved manner, and enabling the inner annular surface of the insulating connection ring to be connected to the outer annular surface of the bearing room. Compared with a conventional weftless insulating end cover, the end cover employs a brand-new insulating structure, is larger in insulation thickness, is higher in strength, is smaller in capacitance, is good in insulation effect for a low-frequency axial current generated by a motor and a high-frequency axial current generated by a frequency converter, and also greatly reduces the capacitive current of the insulating end cover. The end cover can be assembled through several parts, so the technology is simple and the manufacturing cycle is short. The end cover can be used for completely replacing a weftless insulating end cover, and various performances of the end cover are better than the performances of the weftless insulating end cover.

Description

technical field [0001] The invention relates to an end cover of a wind power generator, in particular to a combined insulating end cover of a wind power generator. Background technique [0002] The wind turbine insulation device is mainly used in combination with insulating bearings or non-woven tape insulating end covers and shaft grounding brushes. With the large-scale installation and operation of wind turbines, the phenomenon of electric corrosion of bearings caused by shaft currents has become more and more prominent. The main reason is that the insulating end cover without weft tape has poor hygrothermal performance, and the strong water absorption results in the failure of the insulating end cover. The capacitance value of the insulating end cap is too high, the capacitive current is large, or even broken down. Reducing the capacitance value of the insulating end cap, reducing the capacitive current of the insulating end cap, ensuring the insulation stability of the...

Claims

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Application Information

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IPC IPC(8): H02K5/04H02K5/08
CPCH02K5/04H02K5/08
Inventor 段志强张铭继崔皓张广兴
Owner CRRC YONGJI ELECTRIC CO LTD
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