以新型变桨距风力机为研究对象,针对其独特的变桨调节机构,通过风洞试验的方法,采用IMC载荷测试系统,对其关键部件进行载荷测试。试验结果显示：随着桨距角增大,叶根所受弯矩降低,但叶根挥舞弯矩较摆振弯矩减小更明显;塔筒俯仰方向的受力大于侧弯方向,当风轮转速约为243.5 r/min时,塔筒侧弯受力出现突增;不同桨距角下,变桨调节机构的齿条与齿条同步盘测点载荷大小随风速变化趋势一致,但随着桨距角的增加,表现为先增加后减小再增加的趋势。
Abstract
Taking the new variable pitch wind turbine as the research object, aiming at its unique variable pitch regulating mechanism, through the wind tunnel test method, the IMC load test system was used to carry out the load test on its key components. The test results show that with the increase of pitch angle, the bending moment of blade root decreases, but the reduction effect of axial bending moment is more obvious than that of circumferential bending. The force in the pitching direction is greater than that in the lateral bending direction, and when the wind wheel speed is about 243.5 r/min, the lateral bending force of the tower increases suddenly. Under different pitch angles, the load of measuring points on the rack and rack synchronous disk of the variable pitch regulating mechanism has the same trend with the wind speed, but with the increase of pitch angle, it increases first, then decreases and finally increases.
关键词
风力机 /
载荷 /
变桨距角 /
关键部件 /
IMC载荷测试系统
Key words
wind turbines /
load /
variable pitch angle /
key components /
IMC load test system
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基金
鄂尔多斯市科技合作重大专项（2021EEDSCXQDFZ009）; 内蒙古自治区科技成果转化项目（CGZH2018131）
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