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正反转双转轮水轮机水力性能研究 被引量:15
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作者 韩凤琴 金元敏明 《水电能源科学》 2006年第5期37-39,共3页
研究用于低水头的反转双转轮、双转子小型水力发电设备,探讨反转双转轮的基本原理与水轮机转轮的水力特性,确认了在流量一定的运转工况时反转前转轮转速与正转后转轮转速相等条件下可以得到最高效率、且出力为两转轮之和(单转轮的2倍)... 研究用于低水头的反转双转轮、双转子小型水力发电设备,探讨反转双转轮的基本原理与水轮机转轮的水力特性,确认了在流量一定的运转工况时反转前转轮转速与正转后转轮转速相等条件下可以得到最高效率、且出力为两转轮之和(单转轮的2倍)。通过模型实验,确认了正反转两转轮的水力性能基本满足一般的相似准则,可以进行实际转轮设计时的换算。 展开更多
关键词 水电机组 转轮水轮机 转轮 后转轮 水力特性相似准则
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Effect of flank angle and friction coefficient on contact stress of turbine rotor 被引量:1
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作者 WU Xiao-zan TAO Qing-bin +1 位作者 CHEN An-ping XU Hui 《Journal of Central South University》 SCIE EI CAS 2013年第7期1792-1796,共5页
In order to simulate the stress of turbine rotor in aeroengine, based on the ANSYS, the simplification model of the turbine rotor was built up. By applying the simplification model, the contact stress of turbine rotor... In order to simulate the stress of turbine rotor in aeroengine, based on the ANSYS, the simplification model of the turbine rotor was built up. By applying the simplification model, the contact stress of turbine rotor was computed. The maximum contact stress appears at the chamfer below the flank, which agrees with experiment result. At the same time, the contact stress changing with the flank angle and friction coefficient was calculated, The results show that the contact stress in the flank increases slowly with the increase of flank angle; with the friction coefficient increasing, the contact stress in flank length decreases; the contact stress will not change when the friction coefficient is over 0.25. 展开更多
关键词 AEROENGINE contact stress ANSYS optimization design
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