Design and analysis of a new high frequency double-servo direct drive rotary valve

doi:10.1007/s11465-016-0406-x

Front. Mech. Eng.

2016, Vol. 11

Issue (4) : 344-350 https://doi.org/10.1007/s11465-016-0406-x

RESEARCH ARTICLE

Design and analysis of a new high frequency double-servo direct drive rotary valve

Muzhi ZHU(

),Shengdun ZHAO,Jingxiang LI

School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China

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Abstract

Researchers have investigated direct drive valve for many years to solve problems, such as fluid force imbalance and switching frequency. The structure of the rotary valve has received considerable research interest because of its favorable dynamic properties and simple structure. This paper studied the high frequency double-servo direct drive rotary valve (DDRV), and proposed a novel structure and drive method satisfying high reversing frequency and adequate quantity of flow. Servo motors are integrated into the valve by the innovative structure, which is designed to equilibrate the unbalanced radial fluid force with the symmetric distributed oil ports. Aside from the fast reversing function of the valve, the DDRV presented high performance in linearity of the flow quantity and valve opening as a result of the fan-shaped flow ports. In addition, a computational fluid dynamics (CFD) method based on Fluent was conducted to verify the flux regulation effect of the height change of the adjustable boss.

Keywords direct drive rotary valve computational fluid dynamics (CFD) flow regulation

Corresponding Author(s): Muzhi ZHU

Just Accepted Date: 25 October 2016 Online First Date: 17 November 2016 Issue Date: 29 November 2016

Cite this article:

Muzhi ZHU,Shengdun ZHAO,Jingxiang LI. Design and analysis of a new high frequency double-servo direct drive rotary valve[J]. Front. Mech. Eng., 2016, 11(4): 344-350.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-016-0406-x
https://academic.hep.com.cn/fme/EN/Y2016/V11/I4/344

Fig.1 Geometry model of the DDRV

Fig.2 3D model of the valve core components

Fig.3 Simplified view of the commutation principle

Fig.4 Varied height of adjustable fluid chamber

Fig.5 3D model of the flow channel

Fig.6 Flow variable curves of each oil port

Fig.7 Curve of the pressure-flow equation

Fig.8 One quarter model of the fluid flow channel

Fig.9 Velocity streamline curves and pressure contour at heights of (a) 10 mm, (b) 5 mm, and (c) 3 mm

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