Calculating Method of Assembly Clearance Magnitude of Centrifugal Pump Impeller with Mechanics Analysis

Abstract:

When designing the centrifugal cooling pump, the people have been accustomed to design the normal clearance of the impeller shroud by mechanical assembly principle only for preventing parts from interference. But in the practice, the shroud clearance magnitude of the cooling pump is very difficult to be confirmed because of either serious leakage or high power consumption. As so far, it hasn’t been specific theory about its magnitude which was designed only by a large of experiment. The boundary-layer thickness theory can be introduced to calculate the impeller clearance magnitude. This method first breached conventional experiment way in determine the shroud clearance magnitude and applied scientific theory to the engineering design. As a result, this method can save a great deal of industrial resources such as manpower, materials and funds, and give the more precise scientific reference to relative research about pump

• Periodical: Applied Mechanics and Materials (Volume 164)
• Pages: 366-370
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.164.366
• Online since: April 2012
• Authors: Li Hong Li, Qian Jin Guo
• Keywords: Boundary-Layer Theory, Calculating Clearance Magnitude Method, Impeller Assembly Clearance, Mass Flux

References

[1] Liu Huizhi, Wu Yulin. The theory of the boundary layer. China machine press, pp.35-120.

[2] Chen X.L., Zhang W.G., Huang Z. Relationship of the performance of centrifugal oil pump and its similarity. Journal of Shanghai Jiaotong University，Vol 37(2003), pp.686-689.

[3] Cong X.Q., Jia Z.Q., Zhang J, et al. Flow calculation and experiment of photovoltaic centrifugal pump under weak radiation, Journal of Drainage and Irrigation Machinery Engineering, V28(2010), pp.305-309.

[4] Numerical simulation of internal flow through the spiral casing of centrifugal pump, Journal of Jiangsu University, V25（2004）, pp.185-188.

[5] Cui Baoling. Numerical simulation and theoretical analysis of high-speed centrifugal pump with inducer. Hangzhou: Zhejiang University( 2006).

[6] Chen naixiang. Centrifugal pump. China machine press, (2003), pp.68-76.

[7] Fan Zheng-xiang. Test unit for protector's performances of electric submersible centrifugal pump[J]. Journal of Xi'an Petroleum Institute, V12(1997), pp.37-38.

[8] Daniel B. Blanchard. Macroscale and microscale fluid mechanics in rotary pumps. Utah.: University of Utah( 2007).

[9] Daniel baun. Hydrodynamic forces in centrifugal pump and compressor impellers in volute casings: measurements using magnetic bearings and CFD simulations. Virginia: The university of Virginia( 2002).

[10] Eng J. Fluids Effect of Surfactant Additives on Centrifugal Pump Performance[J]. Journal of Fluids Engineering, V128(2006), pp.794-799.