The tower door opening of the wind power generating set, the tower and the wind generating set

Abstract

The invention provides a tower door opening and a tower of a wind power generator set and the wind power generator set. The tower door opening of the wind turbine generator set comprises an arc-shapedpart which is symmetrical up and down, and the arc-shaped part meets the following formula: (x / a)<m>+(y / b)<n>=1, wherein x and y represent coordinate values of any point on the arc-shaped part on theX axis and the Y axis correspondingly, a represents 1 / 2 value of the width of the arc-shaped part on the X axis, and b represents height value of the arc-shaped part on the Y axis; and in addition, mand n meet the following requirements correspondingly: 1.65<=m<=1.80, and 1.65<=n<=1.80. By adopting the tower door opening and the tower of the wind power generator set and the wind power generatorset, the stress concentration coefficient of the tower door opening can be effectively reduced, the thickness of the tower at the position of the tower door opening is reduced, thus the weight of thetower is reduced and the manufacturing cost is reduced.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, and more specifically, to a tower door opening of a wind power generator set capable of reducing the stress concentration factor of the tower door opening, a tower including the tower door opening, and a wind power generator set. Background technique [0002] The door opening at the bottom of the wind turbine tower is the main passage for maintenance operators and equipment to enter the wind turbine. Due to the opening of the tower door opening, the tower will experience a phenomenon of local increase in stress (stress concentration). Stress concentration can cause fatigue cracks in objects and static load fractures in parts made of brittle materials. In engineering, the stress concentration factor SCF (Stress Concentration Factor) is used to represent the degree of stress concentration. The SCF value can be calculated by dividing the maximum stress when the stress concentr...

AI Technical Summary

Problems solved by technology

However, the SCF value near the door opening of the tower designed according to the ellipse is still relatively large, generally reaching 1.40-1.50. Since the wall thickness of the tower is very sensitive to the SCF value, in order to make the design of the tower meet the strength requirements, now Some elliptical designs still need to thicken the wall thickness of the tower at the door opening of the tower, resulting in an increase in the quality of the tower

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