大型齿轮调速装置研究现状与关键技术分析

Research Situation and Key Technology Analysis of Large-scale Gear Variable Speed Coupling Device

介绍了火电机组调速运行的必要性,综述了国内外近年来大功率齿轮调速装置的研究现状,包括在流体力学和动力学的基础上,利用计算机技术进行三维有限元分析直观显示叶轮集中部位并求解应力最大值,基于CFD的液力元件内部介质三维流动数值模拟,以及现代测试技术在内部流场可视化方面的应用等。提出了目前大功率齿轮调速装置需要解决的关键技术,包括高速轮齿修形,箱体轻量化设计以及大功率试验台建设等。

The necessity of regulating mechanism operation in thermal power generating units is introduced. The situation of the domestic and foreign research on high power gear variable speed coupling device in recent years are summarized, including strength analysis of impeller with FEM, the CFD numerical simulation of the inner 3 - D flow in hydrodynamic transmission elements, and the experimental study on the inner complex flow in hydrodynamic ele- ments. The key technology of large - scale gear variable speed coupling device are presented, such as high - speed tooth profile correction, lightweight design for housing as well as high efficiency test platform and so on.