【摘要】 为了确定直空冷风机系统产生的扰力,运用无线动态应变测试技术对风机轴进行动应变测试,准确地测出了风机在不同工况下运行时产生的对桥架的扰力,为国内空冷自主化设计提供了参考。风机扰力由四个主要成份组成:1.由转子质量偏心引起的扰力;2.由扇叶平面外振动引起的扰力;3.由空气反作用力引起的扭矩;4.由空气反作用引起的竖直向下的轴向力。更多还原

【Abstract】 The authors use the wireless dynamic strain testing skill to test the dynamic strains of the fan spool,which is working in each exact operating condition to confirm the disturbing force made by the fans.The disturbing force has four components,which are created in different cases.The measurement provides some reference for chain’s self reliant design of direct air-cooling system of power station.The four components are:(1)force created by eccentric mass of fan rotor;(2)force created by fan blades vibration out of water level surface;(3)torque created by air reaction;(4)force in axial direction created by air reaction.更多还原