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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
P.C:
310009
E-mail:
meem_contribute@163.com
Abstract: In order to improve the service life of slurry pumps, it is important to study the wear resistance of their flow components. The volute is the main flow part that affects the life of the slurry pump. In order to improve the wear resistance of the volute, the wear resistance of the volute of the slurry pump was studied by using bionic technology and drawing lessons from the surface morphology of the Scapharca subcrenata, and the bionic design of the volute of the slurry pump was carried out. Firstly, a biomimetic structure with raised stripes and grooves was designed based on the surface morphology of Scapharca subcrenatas. Then, based on the DPM model, the McLaury wear prediction model was introduced to establish a simulation model for the solid-liquid two-phase flow of the slurry pump. Finally, the wall wear, the particle velocity and distribution inside the pump, the velocity and pressure distribution of the flow field inside the pump were analyzed for both ordinary and biomimetic volutes. The research results show that the error between the simulation and experimental results of the slurry pump head is less than 8%, and the solid-liquid two-phase flow simulation model has high accuracy. The average wear of the biomimetic volute wall decreases by 43.9%, and the maximum wear decreases by 64.6%. The average and maximum wear of the biomimetic volute is significantly reduced, the severe wear area of the biomimetic volute is significantly reduced, and the wear of the spiral chamber of the volute is more uniform. The biomimetic design has a positive significance for reducing the wear of the volute. The biomimetic structure changes the direction of motion after particle wall collision, making the particles evenly distributed in the spiral chamber of the volute and reducing the area of severe wear. At the same time, biomimetic volutes are beneficial for conveying particles, making them more easily carried away by the fluid, reducing particle residence time, and thus reducing wall wear. The wear resistant biomimetic design of the volute can provide a design reference and theoretical basis for the wear resistant and extended life of the flow components of the slurry pump.
Key words: centrifugal pump; wear resistance of overflow parts; wall wear; service life; surface morphology of Scapharca subcrenatas; McLaury wear prediction model
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- Chinese Core Periodicals
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- Chinese Sci-tech Core Periodicals
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- SA, INSPEC Indexed
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- CSA: T Indexed
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- UPD:Indexed
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2010 Zhejiang Information Institute of Mechinery Industry
Technical Support：Hangzhou Bory science and technology
