Title:
SHAFT STRUCTURE, WIND TURBINE SHAFT SYSTEM, AND WIND TURBINE
Document Type and Number:
WIPO Patent Application WO/2023/071041
Kind Code:
A1
Abstract:
A shaft structure, a wind turbine shaft system, and a wind turbine. The shaft structure is overally a cylindrical structure and comprises a bearing matching section (2), a shaft shoulder section (3,) and a stress buffering section (4) which are connected in sequence; the bearing matching section (2) is used for mounting a bearing (7); the outer surface of the stress buffering section (4) is a curved surface recessed inwardly; and the minimum outer diameter of the stress buffering section (4) is smaller than the outer diameter of the bearing matching section (2) and greater than the inner diameter of the bearing matching section (2). By means of the described structure, by providing the stress buffering section (4) at a rear side position of the shaft shoulder section (3), stress originally acting on a corner of the shaft shoulder section (3) can be buffered by the stress buffering section (4) and dispersed to other positions away from the shaft shoulder section (3), such the occurrence of stress concentration in the shaft shoulder section (3) can be effectively prevented.
Inventors:
MA JIAWEI (CN)
FANG TAO (CN)
LI HUIXUN (CN)
FANG TAO (CN)
LI HUIXUN (CN)
Application Number:
PCT/CN2022/083673
Publication Date:
May 04, 2023
Filing Date:
March 29, 2022
Export Citation:
Assignee:
XINJIANG GOLDWIND SCIENCE & TECH CO LTD (CN)
International Classes:
F03D80/70; F03D1/00; F03D1/06; F03D15/00; F03D15/20; F03D80/00; F16C3/00; F16C3/02
Domestic Patent References:
| WO2014023850A1 | 2014-02-13 |
Foreign References:
| CN113883021A | 2022-01-04 | |||
| CN215927661U | 2022-03-01 | |||
| CN207349031U | 2018-05-11 | |||
| CN101868635A | 2010-10-20 | |||
| CN109060339A | 2018-12-21 | |||
| CN109667725A | 2019-04-23 | |||
| CN209621531U | 2019-11-12 | |||
| CN111523267A | 2020-08-11 | |||
| US20040063506A1 | 2004-04-01 |
Other References:
LI, XIUZHEN ET AL.: "Research on Parameter Optimization of Main Shaft of Wind Turbine Based on Isight", WIND ENERGY, no. 3, 31 March 2019 (2019-03-31), XP009545971, ISSN: 1674-9219
BAI, RU ET AL.: "Research about Structure Optimization on Main Shaft of MW Wind Turbine", MODERN MANUFACTURING ENGINEERING, no. 3, 31 March 2020 (2020-03-31), XP009545314, ISSN: 1671-3133
ZHAO, BAIYU ET AL.: "Strength Analysis and Optimization on Main Shaft of MW Wind Turbine", JOURNAL OF MECHANICAL & ELECTRICAL ENGINEERING, vol. 38, no. 7, 31 July 2021 (2021-07-31), XP009545312, ISSN: 1671-3133
LYU, XINGMEI ET AL.: "Strength Analysis on Mainshaft of MW Wind Turbine", JOURNAL OF MECHANICAL TRANSMISSION, vol. 37, no. 2, 28 February 2013 (2013-02-28), XP009545311, ISSN: 1004-2539
WENG, HAIPING ET AL.: "Research on Fatigue Analysis Methods of Wind Turbine Shaft", ACTA ENERGIAE SOLARIS SINICA, vol. 34, no. 10, 31 October 2013 (2013-10-31), pages 1714 - 1719, XP009545315, ISSN: 0254-0096
CHENG JUN; HE CUNFU; LYU YAN; ZHENG YANG; XIE LONGYANG; WU LONG: "Ultrasonic inspection of the surface crack for the main shaft of a wind turbine from the end face", NDT&E INTERNATIONAL, vol. 114, 14 May 2020 (2020-05-14), AMSTERDAM, NL , XP086182328, ISSN: 0963-8695, DOI: 10.1016/j.ndteint.2020.102283
BAI, RU ET AL.: "Research about Structure Optimization on Main Shaft of MW Wind Turbine", MODERN MANUFACTURING ENGINEERING, no. 3, 31 March 2020 (2020-03-31), XP009545314, ISSN: 1671-3133
ZHAO, BAIYU ET AL.: "Strength Analysis and Optimization on Main Shaft of MW Wind Turbine", JOURNAL OF MECHANICAL & ELECTRICAL ENGINEERING, vol. 38, no. 7, 31 July 2021 (2021-07-31), XP009545312, ISSN: 1671-3133
LYU, XINGMEI ET AL.: "Strength Analysis on Mainshaft of MW Wind Turbine", JOURNAL OF MECHANICAL TRANSMISSION, vol. 37, no. 2, 28 February 2013 (2013-02-28), XP009545311, ISSN: 1004-2539
WENG, HAIPING ET AL.: "Research on Fatigue Analysis Methods of Wind Turbine Shaft", ACTA ENERGIAE SOLARIS SINICA, vol. 34, no. 10, 31 October 2013 (2013-10-31), pages 1714 - 1719, XP009545315, ISSN: 0254-0096
CHENG JUN; HE CUNFU; LYU YAN; ZHENG YANG; XIE LONGYANG; WU LONG: "Ultrasonic inspection of the surface crack for the main shaft of a wind turbine from the end face", NDT&E INTERNATIONAL, vol. 114, 14 May 2020 (2020-05-14), AMSTERDAM, NL , XP086182328, ISSN: 0963-8695, DOI: 10.1016/j.ndteint.2020.102283
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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