本文選題：風電機組　切入點：維護　出處：《新疆農(nóng)業(yè)大學》2014年碩士論文　論文類型：學位論文

【摘要】：風能具有清潔、高效、可再生和便于大規(guī)模開發(fā)及應用等顯著優(yōu)勢。但是,由于風電機組的質(zhì)保期僅為5年,到目前,全球超過質(zhì)保期的風電機組已超過50000臺,風電機組中后期的運行維護將成為保障風力發(fā)電效益的核心環(huán)節(jié)。本文從風電機組的維護工作特點出發(fā),確定以機組關鍵部件吊裝作業(yè)為主要任務的吊裝裝置為研究對象,開展了以下幾個方面的研究工作:1)基于桁架結(jié)構(gòu),建立了吊裝平臺的空心腹桿系桁架結(jié)構(gòu)模型,該結(jié)構(gòu)模型具有重量輕的優(yōu)點,保證了吊裝系統(tǒng)的安全使用;2)根據(jù)導桿機構(gòu)具有“傳力”良好和結(jié)構(gòu)相對簡單的優(yōu)點,將其結(jié)構(gòu)形式應用于設計風電機組吊裝裝置,在保證吊裝裝置結(jié)構(gòu)強度和剛度的同時,滿足結(jié)構(gòu)簡化的要求;3)運用三維CAD設計軟件建立了吊裝平臺的仿真模型,并對模型進行了基于微分方程的線性化處理,得到吊裝平臺各個關鍵部件有限元模型;4)對建立的有限元模型添加約束和載荷,進行仿真分析,結(jié)果表明,本文建立的吊裝平臺關鍵部件的安全性,強度、剛度和應變量均滿足吊臂功能實現(xiàn)的基本要求;5)應用Adams仿真平臺,對建立的吊裝平臺的吊臂進行動力學仿真分析,結(jié)果表明,吊臂模型能夠在極限工況下,吊臂能夠?qū)崿F(xiàn)平穩(wěn),精確的完成預定的吊裝工作。仿真結(jié)果表明,本文設計的風電機組吊裝裝置能夠滿足機組在中后期運行維護過程中破損設備的更換以及老舊機組的升級換代工作。該吊裝平臺具有結(jié)構(gòu)簡單,造價低廉,組立、拆卸方便快捷等特點,對于降低運行維護的成本具有十分顯著的工程應用價值。
[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.

【學位授予單位】：新疆農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM315

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