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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: The channel of the slide valve presents an asymmetric and changing complex flow channel, and the formation of turbulent flow in the slide valve. It causes the valve core surface to be affected by uneven pressure, forming an unbalanced force, and making the valve core stick and affecting the normal operation of the slide valve. Aiming at the problem,the influence of eccentric undercut groove of valve body on radial unbalance force of slide valve core was studied. Firstly, the fluid domain of slide valve was simplified, and the transient flow analysis model of the slide valve was established by the numerical simulation method. Then, the uneven pressure distribution on the valve core surface under different eccentric sink grooves was analyzed by Bernoulli effect. Finally, the calculation formula of unbalance force was obtained. The influence of different eccentricity of sink grooves on the flow characteristics of the slide valve, the surface force of the valve core and the radial unbalance force were studied. The research results indicate that the eccentric sink groove slows down the degree of turbulence flow of the lower surface area in the outlet section, thus effectively reducing the radial unbalance force. When the eccentric distance of eccentric sink groove is 1.92mm, the valve core is subjected to the least radial unbalance force, compared with the non-eccentric sink groove, the radial unbalance force is reduced respectively by 77.63% and 50.18% when the opening is 0.5mm and 1.5mm, which effectively slows down the tilt of the valve core. The research result has a certain reference value for the design of eccentric sink groove and the research on the method of restrain unbalance force of valve core.
Key words: slide valve core; flow passage model of slide valve; numerical simulation method; eccentric sink groove; radial unbalance force; flow characteristics in valve; eccentricity of undercut groove; stress on valve core surface
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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
