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Structure of nacelle cover connection part of wind power generation device

A technology for wind power generation device and nacelle cover, which is applied in the directions of wind turbine components, wind turbines, wind turbine combinations, etc., can solve the problems of material deformation and large connecting parts, and achieves the effect of low cost and high strength

Inactive Publication Date: 2015-11-25
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] also, Figure 8 The structure of the plate connection part of the overlapping joint method shown, Figure 9 The shown flange-type plate connection structures all use bolts to join the plates. Therefore, when the plates are deformed by external forces such as wind pressure, workers walking on the plates, snow accumulation, etc., the bolts are processed. The connection part of the plate of the hole undergoes a large material deformation and becomes the weakest part in the nacelle cover

Method used

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  • Structure of nacelle cover connection part of wind power generation device
  • Structure of nacelle cover connection part of wind power generation device
  • Structure of nacelle cover connection part of wind power generation device

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no. 1 approach

[0060] Figure 4 ~ Figure 6 The cross-sectional view shown is the structure of the nacelle cover connection part of the wind power generator according to the first embodiment of the present invention.

[0061] exist image 3 and Figure 4 Among them, on the upper end portion 31 of the side wall panel 3 constituting the nacelle cover 2, a long strip-shaped first corner piece (first frame piece) is fixed at the surface (the inner surface side of the nacelle) that becomes the inner side of the nacelle cover 2. 5. Further, a long second corner fitting (second frame member) 6 is fixed to the inner surface side of the nacelle cover 2 on the lower end portion 41 of the top plate 4 constituting the nacelle cover 2 .

[0062] Moreover, when installing the top plate 4 to the side wall panel 3, the upper surface 51 of the first corner fitting 5 and the lower surface 61 of the second corner fitting 6 butt against each other and fix them with bolts 11, so that the upper end of the side ...

no. 2 approach

[0083] Next, based on Figure 7 , the structure of the nacelle cover connection portion of the wind power generator according to the second embodiment of the present invention will be described. In addition, the same code|symbol is attached|subjected to the same part as the above-mentioned embodiment, and the detailed description is abbreviate|omitted.

[0084] As described above, the nacelle cover connection portion structure of the present embodiment is configured substantially in the same manner as the nacelle cover connection portion structure of the first embodiment, but has a different structure in the following points.

[0085] That is, one portion of the upper end portion 31 of the side wall panel 3A at a position facing the lower end of the covering portion 43 serves as the bulging portion 33 and is formed so as to protrude toward the lower end 44 of the covering portion 43 . Therefore, the lower end 44 of the covering portion 43 is substantially at the same level as...

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Abstract

A structure for a nacelle cover connection portion of a wind turbine generator having excellent workability, water-tightness, and strength is provided. A lengthy first angled member (5) is fixed to an inside surface of a nacelle cover and forms an upper end portion (31) of a side wall panel (3). A lengthy second angled member (6) is fixed to an inside surface of the nacelle cover and forms a lower end portion (41) of a roof panel (4). An upper surface (51) of the first angled member (5) and a lower surface (61) of the second angled member (6) are aligned with and fixed to each other so as to connect the upper end portion (31) and the lower end portion (41) in substantially the same plane. A covering portion (43) covering the upper end portion (31) from the outside of a nacelle is provided at a predetermined interval from the same. The covering portion (43) is formed integrally with the lower end portion (41) so as to protrude to the outside of the nacelle cover farther than the lower end portion (41). A packing (7) is interposed between the upper surface (51) and the lower surface (61).

Description

technical field [0001] The invention relates to a nacelle cover connection part structure of a wind power generation device. Background technique [0002] A wind power generator is a device that rotates a rotor head having wind turbine blades under wind force, speeds up the rotation with a speed increaser, etc., and generates power with a driven generator. The rotor head is installed on a tower for a windmill, is attached to an end portion of a nacelle capable of pivoting, and is supported so as to be rotatable about a substantially horizontal and lateral rotation axis. [0003] A nacelle covering a nacelle of a wind power generator is constituted by connecting a plurality of plates, and the connection portion structure of the plates needs to have a structure capable of preventing rainwater from infiltrating from the outside of the nacelle. [0004] The connecting portions of the plates are usually joined by bolts, but when the nacelle cover is subjected to external force d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D11/00F03D13/10F03D80/00
CPCF03D9/002F03D1/001F05B2230/604F05B2240/14Y02B10/30Y02E10/726Y02E10/728Y02P70/523F03D13/10Y02E10/72Y02P70/50Y02B10/70F03D80/00
Inventor 上林正和平野晴彦沼尻智裕伊藤健治本田育夫藤冈义弘
Owner MITSUBISHI HEAVY IND LTD
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