Experimental analysis of static and dynamic properties of the check valves

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU132922" target="_blank" >RIV/00216305:26210/19:PU132922 - isvavai.cz</a>

Result on the web

<a href="https://epjwoc.epj.org/articles/epjconf/abs/2019/18/epjconf_efm18_02013/epjconf_efm18_02013.html" target="_blank" >https://epjwoc.epj.org/articles/epjconf/abs/2019/18/epjconf_efm18_02013/epjconf_efm18_02013.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/201921302013" target="_blank" >10.1051/epjconf/201921302013</a>

Result language

angličtina

Original language name

Experimental analysis of static and dynamic properties of the check valves

Original language description

The check valves play an important role in safety and reliability of many technologies using liquid or gas flow. Check valves are elements of the hydraulic system enabling the one-way flow without a significant pressure loss and preventing the reverse flow. The ideal check valve should have an acceptable pressure loss and, when closed, there should be no undesirable dynamic phenomena like water hammer or slam. The static properties describe energy losses of the check valve, and the producers provide them as a standard. The static properties can be defined either in an experimental way or using the CFD analysis. The dynamic properties of the check valve express a relation between the maximum reverse velocity and water column deceleration. Unfortunately, the definition of dynamic properties can be obtained only experimentally, and for small pipe diameters. It is very demanding, time consuming and expensive to define the dynamic characteristic so it is why the producers do not offer it as a standard. The article deals with static and dynamic properties of different check valves with different closing principles. There was built a testing hydraulic circuit with the pipe diameter DN 100, that enables the simulation of check valve slam during the flow reversing. The attention was paid to the definition of flow deceleration, which is rather problematic and usually defined in a different way for each lab.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

<a href="/en/project/TH01011352" target="_blank" >TH01011352: Innovative research of check valves for extreme operating conditions in energetics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

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

Article name in the collection

EPJ Web of Conferences

ISBN

—

ISSN

2100-014X

e-ISSN

—

Number of pages

8

Pages from-to

1-8

Publisher name

Neuveden

Place of publication

Neuveden

Event location

Praha

Event date

Nov 13, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000504642200014