风电机组维护用吊装装置建模与分析

发布时间：2018-03-23 08:40

本文选题：风电机组　切入点：维护　出处：《新疆农业大学》2014年硕士论文　论文类型：学位论文

【摘要】：风能具有清洁、高效、可再生和便于大规模开发及应用等显著优势。但是,由于风电机组的质保期仅为5年,到目前,全球超过质保期的风电机组已超过50000台,风电机组中后期的运行维护将成为保障风力发电效益的核心环节。本文从风电机组的维护工作特点出发,确定以机组关键部件吊装作业为主要任务的吊装装置为研究对象,开展了以下几个方面的研究工作:1)基于桁架结构,建立了吊装平台的空心腹杆系桁架结构模型,该结构模型具有重量轻的优点,保证了吊装系统的安全使用;2)根据导杆机构具有“传力”良好和结构相对简单的优点,将其结构形式应用于设计风电机组吊装装置,在保证吊装装置结构强度和刚度的同时,满足结构简化的要求;3)运用三维CAD设计软件建立了吊装平台的仿真模型,并对模型进行了基于微分方程的线性化处理,得到吊装平台各个关键部件有限元模型;4)对建立的有限元模型添加约束和载荷,进行仿真分析,结果表明,本文建立的吊装平台关键部件的安全性,强度、刚度和应变量均满足吊臂功能实现的基本要求;5)应用Adams仿真平台,对建立的吊装平台的吊臂进行动力学仿真分析,结果表明,吊臂模型能够在极限工况下,吊臂能够实现平稳,精确的完成预定的吊装工作。仿真结果表明,本文设计的风电机组吊装装置能够满足机组在中后期运行维护过程中破损设备的更换以及老旧机组的升级换代工作。该吊装平台具有结构简单,造价低廉,组立、拆卸方便快捷等特点,对于降低运行维护的成本具有十分显著的工程应用价值。
[Abstract]:Wind energy is clean, efficient, renewable and is convenient for large-scale development and application and other significant advantages. However, due to the wind turbine warranty period of only 5 years, up to now, the wind turbine global beyond the warranty period has more than 50000 units, the wind turbine operation and maintenance will become the core benefits of wind power generation. From the wind turbine maintenance work characteristics, determine the lifting device to the key components of unit lifting operations as the main task as the research object, carried out research in the following aspects: 1) based on the truss structure, a hollow webbed truss structure model of lifting platform, this model has the advantages of light weight to ensure the safe use of the hoisting system; 2) according to the guide bar mechanism has the advantages of good "force" and a relatively simple structure, the structure is applied to design wind turbine lifting device, The lifting device structure strength and stiffness of the structure is simplified at the same time, meet the requirements; 3) to establish a simulation model of the lifting platform using CAD 3D design software, and the model is linearized based on differential equation, get the lifting platform in each key component and a finite element model; 4) adding constraints and load on the finite element model, simulation results show that the safety, the key components of the lifting platform strength, stiffness and strain can satisfy the basic requirement to realize the function of the arm; 5) using Adams simulation platform, the dynamic simulation analysis of crane hoisting platform established. The result shows that the crane model can in extreme conditions, the crane can achieve stable, accurate to complete the lifting work scheduled. The simulation results show that the design of the wind turbine lifting device can meet the unit in the late. During the maintenance process, the replacement of damaged equipment and the upgrading and upgrading of old generation units are very simple. The lifting platform has the characteristics of simple structure, low cost, erection and disassembly. It has great engineering application value for reducing the cost of operation and maintenance.

【学位授予单位】：新疆农业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM315

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