0
Research Papers

Modeling of a Fast Plate Type Hydraulic Check Valve

[+] Author and Article Information
Eugenio Leati

Institute of Machine Design
and Hydraulic Drives,
Johannes Kepler University,
Altenbergerstr. 69,
Linz 4040, Austria
e-mail: eugenio.leati@jku.at

Christoph Gradl

Institute of Machine Design
and Hydraulic Drives,
Johannes Kepler University,
Altenbergerstr. 69,
Linz 4040, Austria
e-mail: christoph.gradl@jku.at

Rudolf Scheidl

Institute of Machine Design
and Hydraulic Drives,
Johannes Kepler University,
Altenbergerstr. 69,
Linz 4040, Austria
e-mail: rudolf.scheidl@jku.at

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received December 31, 2014; final manuscript received February 8, 2016; published online March 29, 2016. Assoc. Editor: Umesh Vaidya.

J. Dyn. Sys., Meas., Control 138(6), 061002 (Mar 29, 2016) (11 pages) Paper No: DS-14-1554; doi: 10.1115/1.4032826 History: Received December 31, 2014; Revised February 08, 2016

Check valve dynamics plays an important role in many fluid systems, such as in compressors, hydraulic pumps, and hydraulic switching converters. Plate type check valves are a frequently employed valve type in dynamically challenging cases. Despite the relevancy of plate valve dynamics, only few exhaustive works can be found in the literature, focusing on the behavior of hydraulic check valves for high-frequency applications. This paper presents an in-depth characterization of a plate valve designed as rectifier of a high-frequency oscillation pump working at 300 Hz. The aim is to identify a sufficiently simple mathematical model, which permits to optimize the design of the valve for the considered application. The paper analyses the different phenomena contributing to the dynamics of such a valve and presents the results of simulation and experimental activity. The results show how small details in the design and manufacturing of those valves (namely, the contact surfaces) have important consequences on the dynamics of the pump system. In general, a good agreement between model and reality is achieved.

Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Check valve symbol and types: (a) ball valve, (b) poppet valve, (c) plate valve, and (d) multidisk plate valve

Grahic Jump Location
Fig. 2

The plate valve object of the study

Grahic Jump Location
Fig. 3

Schematic of the plate valve considered

Grahic Jump Location
Fig. 4

Base mesh and refinement around the disk

Grahic Jump Location
Fig. 5

Flow pattern obtained with CFD

Grahic Jump Location
Fig. 6

Particular of the velocity distribution underneath the plate

Grahic Jump Location
Fig. 7

Flow rate from CFD and from theoretical models

Grahic Jump Location
Fig. 8

Flow forces and flow factor obtained by CFD simulations

Grahic Jump Location
Fig. 9

Reference geometry for pipe and valve displaced volume

Grahic Jump Location
Fig. 10

Reynolds domain and its boundaries for the considered valve

Grahic Jump Location
Fig. 11

Example of pressure distribution for squeeze (left) and stiction (right)

Grahic Jump Location
Fig. 12

Schematic of the plate elastic deformation in case of imperfect surface

Grahic Jump Location
Fig. 13

Leakage measured and reproduced through plate deformation model

Grahic Jump Location
Fig. 14

Example of a pumping cycle

Grahic Jump Location
Fig. 15

Simulation of a 300 Hz pumping cycle with increasing model complexity

Grahic Jump Location
Fig. 16

Particular of the opening's dynamics of the outlet valve

Grahic Jump Location
Fig. 17

Simulation of stiction effect with different models of plate contact

Grahic Jump Location
Fig. 18

Schematic of the circuit used to test the valves

Grahic Jump Location
Fig. 19

Test rig used for valve characterization

Grahic Jump Location
Fig. 20

Step response with the opening of the inlet valve

Grahic Jump Location
Fig. 21

Step response with the opening of the outlet valve

Grahic Jump Location
Fig. 22

Effect of the short pipe impedance in a pumping cycle at 300 Hz

Grahic Jump Location
Fig. 23

Effect of stiction on pressure peaks

Grahic Jump Location
Fig. 24

Pumping cycles at different frequencies and pressures: (a) low pressure, 200 Hz, (b) low pressure, 400 Hz, (c) high pressure, 200 Hz, and (d) high pressure, 400 Hz

Grahic Jump Location
Fig. 25

Volumetric efficiency of the pump

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In