采用两维激光流速仪，在非设计工况下对三种泵叶轮不稳定流动和湍流度进行了测试，结果表明：叶轮内不稳定流动和湍流度受旋转和曲率及入流状态的综合影响，呈十分复杂的空间分布，偏离设计点时湍流强度和流动脉动与叶轮内流场相互关联，相对于设计工况都更要高些。 The unsteady flow and turbulence of three kinds of pump impellers were tested under non-designed conditions using two-dimensional laser flowmeter. The results show that the instability flow and turbulence in the impeller are affected by the combination of rotation, curvature and inflow. Was a very complex spatial distribution, deviation from the design point turbulence intensity and flow pulsation flow field and the impeller interrelated, relative to the design conditions are even higher.