L-shaped flange and design method thereof

A design method and flange technology, applied in calculation, special data processing applications, instruments, etc., can solve problems such as design work difficulties, and achieve the effect of shortening the design and optimization time

Inactive Publication Date: 2018-07-10
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, most of the flanges used in wind turbine towers are L-shaped flanges. When designing the L-shaped flanges, engineering algorithms are usually used for strength calculations. come with great difficulty

Method used

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  • L-shaped flange and design method thereof
  • L-shaped flange and design method thereof
  • L-shaped flange and design method thereof

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Embodiment Construction

[0046] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the features, structures, or characteristics described hereinafter may be combined in any suitable manner in ...

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Abstract

The invention provides an L-shaped flange and a design method thereof. The L-shaped flange is used for connecting a tower frame of a wind generator set. The design method comprises the steps of determining initial design parameters; selecting a bolt specification; calculating bolt associated parameters; selecting a tower barrel wall thickness; and selecting a flange thickness, wherein the initialdesign parameters include a flange outer diameter, an initial tower barrel wall thickness, a distance between two adjacent bolt axes, and a distance from a tower barrel inner wall to a bolt axis; a maximum bolt number, a flange inner diameter, bolt external force, maximum bearing capacity of each bolt and a static strength safety reserve coefficient are calculated, and whether a first preset condition is met or not is judged; in the step of selecting the tower barrel wall thickness, if ultimate tension in a current failure mode is greater than vertical force under plastic failure of the towerbarrel wall, the tower barrel wall thickness is reselected; and in the step of selecting the flange thickness, whether a second preset condition is met or not under current flange thickness is verified, and if the second preset condition is met, the flange design is finished.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to an L-shaped flange of a tower frame of a wind power generating set and its design. Background technique [0002] The operating environment of wind turbines is harsh and the loads are complex. The tower, as the main supporting part of the wind turbine, supports key components such as the hub assembly, generator, base, etc., and its safety is related to the safety of the whole machine operation. The tower is usually composed of multiple sections, and the sections are connected by flanges. In order to ensure that the tower has sufficient supporting strength, the flanges connected between the sections must meet the strength requirements. [0003] At present, most of the flanges used in wind turbine towers are L-shaped flanges. When designing the L-shaped flanges, engineering algorithms are usually used for strength calculations. come extremely difficult. [0004] Therefore, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 刘朝丰楚小超马武福
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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