轴流式微型水轮机在节能型冷却塔中的应用

Study of miniaxial flow turbine in energy-saving cooling towers

在节能型冷却塔中,用微型水轮机替代电动机驱动风扇叶片旋转可以利用循环冷却水的富余能量,节约风扇电机的能耗。然而目前国内对微型水轮机在冷却塔中驱动风机的工作机理研究不足,导致有些工程案例的应用效果不理想。通过分析各型水轮机的结构和性能特点及冷却塔工作的实际条件,制订了微型水轮机结构型式选择的技术规范,在此基础上进行了轴流式水轮机的应用研究,实验结果证明所研制的轴流式水轮机具有优异的性能,相关的研究成果已在若干个工程项目中得到了实际应用且节能效果明显。

In energy-saving cooling towers, the miniaxial flow turbine are applied to drive cooling tower fans to re- place motors in the conventional cooling towers. With the applied technology, the cooling towers can make full use of the surplus energy of circulating cooling water, while saving the energy consumption of fan motors of cooling towers. However, at present, the working mechanism of mini-hydraulic turbines driving cooling tower fans has not been adequately studied in our country, leading to many non-ideal engineering cases. Based on analyzing the condition of the cooling tower and the structure and performance characteristics of all types of hydroturbine, application criterions and technical specifications of selecting structure type of micro-turbine have been worked out, and then, some application research of axial flow turbine has been done. Experimental results demonstrate that the miniaxial flow turbine applied to drive cooling tower fans has good performance, and relevant research results have been applied in many projects and have get significant energy-saving effect.