叶根法兰螺栓松动位移变化仿真分析与监测方案优化

Simulation Analysis on Displacement by Bolt Looseness of Blade and Its Monitoring Scheme Optimization

摘要:

为确保风力发电机安全的运行，叶根法兰螺栓发挥着至关重要的作用。文中结合实际工程，建立了风力发电机组叶根法兰螺栓连接模型，提出一种基于螺栓松动位移变化的仿真分析方法，以优化螺栓在松动状态下的法兰位移监测方式。结合现场某机组叶根法兰位移变化进行了测试与仿真比对，显示结果相一致。所做研究可指导螺栓松动监测的传感器方案布置与优化，为实时监测和远程预警风力发电机法兰螺栓运行状态提供参考。

Abstract:

Bolts of blade root flange play a vital role in ensuring safe operation of wind turbines. Combined with the actual project, based on the basic theory of bolt connection and the traditional simulation analysis method, the bolt connection model of blade root flange is established, and a simulation analysis method based on displacement change of bolt looseness is presented to optimize the monitoring mode of flange displacement under bolt looseness. The displacement change of blade root flange of a wind turbine is tested and compared with the simulation, and the results come to the same thing. This research can provide a direct guidance for sensor layout and optimization of bolt looseness monitoring, and provide a reference for real-time monitoring and remote warning of bolt looseness state of wind turbines.