一种机翼型叶片冲击式涡轮设计与试验研究

Design and the experiment research of a kind of wing-type blade blow-down turbine

因某项目要求,原有轴流式螺旋线叶片涡轮已不能满足井下发电机的性能要求。笔者在涡轮机械一元流理论基础上进行机翼型叶片冲击式涡轮设计,用CFD软件对涡轮进行了全三维模型数值模拟和力学性能预测。通过合理调整相关参数满足流道、叶片型线和喉部折转角的检验要求,获得满足要求的井下涡轮机械性能。台架试验表明,试验结果与仿真预测结果一致,满足设计要求。

For a project requirements, the original spiral blades of axial flow turbine can not meet the needs of existing produc- tion. For this purpose, the wing type blade impact turbine has designed based on the turbine machinery unitary flow theory. With the computer aided blade shape construction, three dimensional numerical simulation model and mechanical performance prediction to turbine can be made through CFD software. Through the reasonable adjustment of related parameters meet the runner, leaf type line and the inspection requirements of the throat turning angle, A down hole turbine mechanical properties is therefore invented fulfill the requirement. Bench test shows that, the result of experiment is equal to the result of the simula- tion prediction, which meet the design requirements. This design has reference value for other same type of turbine machinery design.