Dynamic behavior of a pilot-operated hung-type diaphragm valve in dependence on the pressure difference and excitation duration

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F25%3A00619265" target="_blank" >RIV/61388998:_____/25:00619265 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21220/25:00390781

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2590123025010606?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2590123025010606?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.rineng.2025.104984" target="_blank" >10.1016/j.rineng.2025.104984</a>

Result language

angličtina

Original language name

Dynamic behavior of a pilot-operated hung-type diaphragm valve in dependence on the pressure difference and excitation duration

Original language description

To quickly and accurately control high gas flow rates, pilot-operated hung-type diaphragm valves are a viable option. These valves utilize the differential pressure across the valve ports to aid the electrically triggered opening and closing actions. The speed of these actions is a result of a complex interplay of the gas properties, fluid flow, inertia and flexibility of the moving parts. In this study, we used a phenomenological approach to investigate the dynamic behavior of such a valve. A combination of experimental and mathematical modeling was used to evaluate pressure variations within a pressure vessel over a range of pressure differences (28 to 516 kPa) and four durations of the coil excitation (33 ms, 72.5 ms, 107 ms, and 137 ms), resulting in 112 cases. Evaluated key parameters include opening and closing velocities, effective flow area, opening and closing times, and associated delays. These parameters were determined by solving numerically the non-stationary mass and energy balance equations and using the Nelder-Mead optimization algorithm to minimize the normalized root-mean-square error between modeled and measured pressure time courses, ensuring that the model accurately reflects the dynamics of the valve. Depending on the pressure difference across the valve, the results reveal two distinct regimes- proportional and plateau-characterized by pressure thresholds. In the proportional regime, valve opening time and response deteriorate with pressure differences, whereas in the plateau regime they stabilize despite increasing pressures. We also found a threshold marking a transition to inertia-controlled operation at the shortest excitation duration of 33 ms. The studied valve exhibited opening and closing responses of about 27 ms and 19 ms respectively, and an effective flow area up to 307 mm2. The coil was energized with alternating current, which is most efficient from the point of needed power, but causes some irregularities that could be mitigated with the help of a microcontroller.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20303 - Thermodynamics

Project

<a href="/en/project/GA22-28869S" target="_blank" >GA22-28869S: Formation of droplets in rapid expansions: Between unary, binary, and heterogeneous paths.</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Results in Engineering

ISSN

2590-1230

e-ISSN

2590-1230

Volume of the periodical

26

Issue of the periodical within the volume

June

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

104984

UT code for WoS article

001480718300001

EID of the result in the Scopus database

2-s2.0-105003141412