摘 要

在全球能源緊張、注重環(huán)境保護的今天，提高能源利用效率和發(fā)展可再生能源已成為無可爭議的可持續(xù)發(fā)展能源的兩個重要方面。風能作為一種無污染和可再生的新能源有著巨大的發(fā)展?jié)摿?。隨著風能的開發(fā)和利用技術的發(fā)展,風力發(fā)電技術取得了顯著的進步,并逐漸成為能源技術中的一個分支。風力發(fā)電機的葉片在風中的轉速每分鐘只有二十轉左右，但發(fā)電機發(fā)電需要每分鐘上千轉的轉速，因此需要通過增速箱增速來達到發(fā)電機發(fā)電所需要的轉速。增速箱是保證風力發(fā)電機具有先進性、高可靠性、易維護性及經濟性的重要部件。因此這就要求增速箱的能夠實現高傳動比，重量輕，體積小，效率高等特點。而行星齒輪傳動是目前所有傳動方案中最能實現這些要求的傳動技術。因此風力發(fā)電增速箱常采用行星齒輪傳動。常見的有兩級2K-H (NGW)型行星傳動加一級定軸傳動組合，一級2K-H (NGW)型行星傳動加兩級定軸傳動組合，一級雙聯(NW)型行星傳動加一級定軸傳動組合。本文就是采用一級雙聯行星傳動加一級定軸傳動組合，它的徑向和軸向尺寸都較小。本設計以1.5MW風力發(fā)電機增速箱為對象，分析其傳動方案包括結構形式、進行傳動比的優(yōu)化分配以及關鍵零部件的詳細設計，并應用AutoCAD軟件繪制傳動升速箱的裝配圖，寫出升速箱的設計說明書。


關鍵詞: 風能　風力發(fā)電增速箱 行星齒輪傳動 優(yōu)化










ABSTRACT

Nowadays，the worldwide energy resources are intension and many countries focus on environmental protection.So improving the energy utilization efficiency and developing the renewable energy are two important parts.Wind energy is one of the new and renewable resources that have the good favorable development prospect. With the development of the exploitation and utilization of wind energy，the wind power generation technology also has the marked progress and becomes an embranchment of energy technology. The rotation speed of wind turbine's leaf blade is only about twenty rpm，but the electric generator needs thousands of rounds per minute.Therefore it needs a speed-increase gearbox. The speed-increase gearbox is the important part of the wind power generation ,which makes the wind power generation advanced, high reliability,easy maintainability and economy. Accordingly,it demands that the speed-increase gearbox can implementation high gear ratio, light weight, small size and high reliability. At present the planetary gear transmission is the best choice.So the planetary gear transmission is usually adopted at the speed-increase gearbox of wind power generator. The representative transmission schemes are two 2K-H (NGW type)planetary gear transmission combining with a fixed axis gear transmission，a 2K-H (NGW type )planetary gear transmission combining with two fixed axis gear transmission and a duplex planetary gear(NW type)transmission combining with a fixed axis gear transmission. This article adopts the duplex planetary gear transmission combining with a fixed axis gear transmission. Both the radial and the axial sizes of it are small. This article researches the speed-increase gearbox of 1.5MW wind power generator. In this article, we analyze the transmission scheme including structural style , optimize the transmission ratio and design the key parts in detail. The assembly diagram of the speed-increase gearbox and the design specifications of the transmission system are provided.


Key words: wind energy, the speed-increase gearbox of the wind turbine generator, the planetary gear transmission,optimization



目 錄