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风电机组深孔断丝反拧取丝法

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螺栓是风力发电机组的重要构件,负责各个主构件的相互连接,有的风电机组轮毂通过螺栓与主轴法兰进行连接紧固,此处长期处在交变风荷载作用下,螺栓极易出现松动,进而影响结构的疲劳寿命,一旦裂纹形成就有引发风电塔失稳倒塌的可能,因此轮毂中断裂的螺栓必须取出,更换正常的螺栓,以保证风电机组安全运行.在风电机组上取断裂螺栓,其具体方法是先在断丝中间钻定位孔、扩孔、再用反丝器反拧并取出断裂螺栓的工艺方案,最后成功取出轮毂中断裂的螺栓.该方法克服了断裂螺栓位置较深、施工空间狭小、操作难度较大等不利因素,让风电机组取断裂螺栓更方便、更快捷,具有很高的经济和社会效益.
Deep Hole Broken Wire Reverse Twisting Method for Wind Turbine Units
Bolts are important components of wind turbines,responsible for the interconnection of various main compo-nents.The hub of the wind turbine described in this paper is connected and fastened to the main shaft flange through bolts. Under long-term alternating wind loads,bolts are prone to loosening,which can affect the fatigue life of the structure. Once cracks form,it may cause the instability and collapse of turbine tower.Therefore the bolts that cause the hub to break must be removed and replaced with normal bolts to ensure safe operation.The specific and effective method for re-moving broken bolts from wind turbines is to first drill a positioning hole in the middle of the broken wire,expand the hole,then use a reverse screw to reverse tighten and remove the broken bolt.The proposed method overcomes unfavorable factors such as deep location of broken bolts,narrow construction space,and large difficulty,facilitates more convenient and efficient removal of broken bolts from wind turbines,and has high economic and social benefits.

wind turbinedeep hole broken wirereverse twist wire retrieval

殷允亮、孟庆新、续建康

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中车山东风电有限公司,山东 济南 250000

风电机组 深孔断丝 反拧取丝

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(14)