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Proceedings Paper

Digital valve for high pressure high flow applications
Author(s): Mircea Badescu; Stewart Sherrit; Derek Lewis; Xiaoqi Bao; Yoseph Bar-Cohen; Jeffery L. Hall
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Paper Abstract

To address the challenges, which are involved with the development of flow control valves that can meet high demand requirements such as high pressure, high flow rate, limited power and limited space, the authors have conceived a novel design configuration. This design consists of a digitalized flow control valve with multipath and multistage pressure reduction structures. Specifically, the valve is configured as a set of parallel flow paths from the inlet to the outlet. A choke valve controls the total flow rate by digitally opening different paths or different combination of the paths. Each path is controlled by a poppet cap valve basically operated in on-off states. The number of flow states is 2N where N is the number of flow paths. To avoid erosion from sand in the fluid and high speed flow, the seal area of the poppet cap valve is located at a distance from the flow inlet away from the high speed flow and the speed is controlled to stay below a predefined erosion safe limit. The path is a multistage structure composed of a set of serial nozzles-expansion chambers that equally distribute the total pressure drop to each stage. The pressure drop of each stage and, therefore, the flow speed at the nozzles and expansion chambers is controlled by the number of stages. The paths have relatively small cross section and could be relatively long for large number of stages and still fit in a strict annular space limit. The paper will present the design configuration, analysis and preliminary test results.

Paper Details

Date Published: 16 April 2016
PDF: 10 pages
Proc. SPIE 9801, Industrial and Commercial Applications of Smart Structures Technologies 2016, 98010B (16 April 2016); doi: 10.1117/12.2219350
Show Author Affiliations
Mircea Badescu, Jet Propulsion Lab. (United States)
Stewart Sherrit, Jet Propulsion Lab. (United States)
Derek Lewis, Jet Propulsion Lab. (United States)
Xiaoqi Bao, Jet Propulsion Lab. (United States)
Yoseph Bar-Cohen, Jet Propulsion Lab. (United States)
Jeffery L. Hall, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 9801:
Industrial and Commercial Applications of Smart Structures Technologies 2016
Steven F. Griffin, Editor(s)

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