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Design Innovation Paper

Design of a Multifunctional Flow Control Valve for Self-Circulating Hydraulic Cylinders

[+] Author and Article Information
Amin Moosavian

Department of Aerospace Engineering,
Ryerson University,
Toronto, ON M5B 2K3, Canada
e-mail: smoosavi@ryerson.ca

Michael Rizoiu

Department of Aerospace Engineering,
Ryerson University,
Toronto, ON M5B 2K3, Canada
e-mail: mrizoiu@ryerson.ca

Fengfeng (Jeff) Xi

Department of Aerospace Engineering,
Ryerson University,
Toronto, ON M5B 2K3, Canada
e-mail: fengxi@ryerson.ca

1Present address: Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received January 26, 2016; final manuscript received September 21, 2016; published online January 11, 2017. Assoc. Editor: Tomomichi Nakamura.

J. Pressure Vessel Technol 139(2), 025001 (Jan 11, 2017) (6 pages) Paper No: PVT-16-1016; doi: 10.1115/1.4034877 History: Received January 26, 2016; Revised September 21, 2016

A new hydraulic circuit is introduced, packaged as a singular component and referred to as a multifunctional flow control (MFC) valve, for usage in conjunction with self-circulating hydraulic cylinders. Unlike conventional check valves, whose directional flow restrictions are permanent, the restriction on the flow direction in the MFC valve can be changed. In addition to being able to act as a check valve in either direction, this valve can allow free flow or no flow of the fluid when required, that is, a total of four positions. The proposed circuit for the MFC valve can effectively be represented as a two-way four-position valve. Furthermore, the design for the valve is validated through experimentation. Additionally, an aerospace application for this valve is presented and discussed herein.

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References

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Figures

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Fig. 1

Proposed equivalent circuit for directional flow control of a self-circulating cylinder

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Fig. 2

The experimental setup for the validation of the MFC valve

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Fig. 3

The implementation of the proposed circuit for the MFC valve, enabling directional lockability for one lockable cylinder

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Fig. 4

Experimental results for the MFC valve in different positions (see Table 2) with the self-circulating hydraulic cylinder under tension and compression; a positive force implies that the cylinder is in tension

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Fig. 5

Cutaway view of the proposed valve schematic in four positions to enable directional locking of a self-circulating cylinder; the arrows represent flow

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Fig. 6

Representation of the MFC valve packaged as a stand-alone component

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Fig. 7

Front and section views of the MFC valve; item 1: port 1; item 2: port 2; items 3 and 4: solenoid valves; and items 5 and 6: check valves

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Fig. 8

Variable geometry wing-box

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Fig. 9

Prototype of the variable geometry wing-box with directionally lockable self-circulating hydraulic cylinders controlled using MFC valves; two modules are shown here

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