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一、泵的磨损及其后果大量实验研究和运行经验表明,叶片压水面的磨损主要是由于泵所抽汲的水体中含有悬浮粒子引起的;吸水面是由于气蚀引起的;叶片末梢的破坏则是由于气蚀和悬浮粒子共同作用的结果。叶片磨损程度各部位并不均同,一般沿叶片末梢、进出口边较严重。叶轮室内壁受到气蚀一磨粒磨损的情况也十分剧烈,且随泵扬程的增高和叶轮室与叶片端面间隙的加大而更趋剧烈。固定不动的导叶,尤其在紧靠进口边缘处,也受到水力磨粒磨损和气蚀腐蚀的作用,其破坏程度在个别情况下由于存在有流向与叶片安放角不一
First, the pump wear and its consequences A large number of experimental studies and operational experience shows that the blade surface pressure of water is mainly due to pump pumping water body contains suspended particles caused by; water surface is caused by cavitation; blade tip damage It is due to the combination of cavitation and suspended particles. The degree of blade wear is not the same for all parts, generally along the blade tip, the import and export side of the more serious. Impeller chamber wall by cavitation erosion of an abrasive is also very severe, and with the pump head and impeller vane room to increase the gap between the end face and more intense. Fixed guide vanes, especially close to the edge of the inlet, are also subject to abrasion and cavitation erosion by hydraulic abrasive particles. In some cases, the extent of damage is due to flow and vane angle