论文部分内容阅读
该类泵有与半径倾斜一个角度的叶片,已完成45°～135°的十一个叶片角度和四个流道每一组合的性能试验。作者还用高速照相机和包括新型皮托管在内的几个探针对内部流动进行了观察。结论如下: 1.泵的性能受叶片角度和流道截面积的影响; 2.关死扬程与最高效率点的扬程之比值和最大功率,随叶片角的增大而减少; 3.有一个规则的液流在流道及叶片之间循环,而
This type of pump has blades angled at an angle to the radius and has completed eleven blade angles of 45 ° to 135 ° and performance tests for each combination of four runners. The authors also observed the internal flow with high-speed cameras and several probes, including the new pitot tube. The conclusions are as follows: 1. The performance of the pump is affected by the angle of the vane and the cross-sectional area of the flow passage. 2. The ratio of the lift and the maximum power of the head of lift to the point of maximum efficiency decreases with the increase of the vane angle. 3. There is a rule Of the liquid circulation in the runner and leaves, and