论文部分内容阅读
由于大型立式水泵出口导叶更换困难，本文对保留出口导叶，且在无冲击条件下分析研究了叶轮改型前后其出口速度和泵性能参数的变化关系，指出这种改造虽然经济划算，但技术上存在一定的局限性。
Due to the difficulty in replacing guide vanes at the outlet of large vertical water pumps, this paper preserves the outlet guide vanes and analyzes the relationship between the outlet velocity and the pump performance parameters before and after modification of the impeller. It is pointed out that although this reform is economical and cost-effective, But there are some technical limitations.