Liu Yuanyi

(Office of Educational Administration, Shandong University of Technology, Zibo 255049)

Cai Baoyuan

(Department of Dynamic Engineering, University of Shanghai for Science and Technology, Shanghai 200000)

Huo Chunyuan

(China Mechanical Technical Equipment, Beijing 100000)

Liu Jiali  Wang Guangye

(College of Mechanical Engineering, Shandong University of Technology, Zibo 255049)

Abstract: This essay, by referring to the “ideal liquid” proposes the viscous hydraulic design methods under the conditions of water-moving border of viscous layer of border. The authors deduced viscous distortion equations and transport equations according to water entering conditions of the stamping and welding multilevel centrifugal pumps. This method is applied to the hydraulic design of the multilevel pumps and improved their functions and efficiency.

Key words: Stamping and welding multilevel centrifugal pumps  Theoretical study  Engineering implementation

CLC No: TH313

Received 20040519, received in revised form 20020041008