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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68407700:21220/25:00390781

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/GA22-28869S" target="_blank" >GA22-28869S: Vznik kapek při rychlých expanzích: přechodné případy mezi unární, binární a hetorogenní cestou</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Results in Engineering

ISSN

2590-1230

e-ISSN

2590-1230

Svazek periodika

26

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

104984

Kód UT WoS článku

001480718300001

EID výsledku v databázi Scopus

2-s2.0-105003141412