Waterhammer Caused by Valve Stroking in a Pipe Line with Two Valves

Autor:	Takeshi Kobori, Shigeru Ikeo
Rok vydání:	1975
Předmět:	Pilot-operated relief valve Diaphragm valve Needle valve Ball valve General Engineering Safety shutoff valve Mechanics Relief valve Globe valve Geology Butterfly valve Marine engineering
Zdroj:	Bulletin of JSME. 18:1151-1157
ISSN:	1881-1426 0021-3764
DOI:	10.1299/jsme1958.18.1151
Popis:	This paper deals with the waterhammer caused by closing the valves in a pipe line with two valves, one at the outlet end (discharge valve), another at the center of the pipe line (mid valve). Theoretical and experimental results indicate that the maximum head rise in the pipe line with two valves is lower than that produced by closing the discharge valve only, when the speed of closing the valve is the same. Moreover it is shown that when the mid valve is nearer to the reservoir or the mid valve is closed some time before the discharge valve, the head drop at the point just after the mid valve increases so much that the possibility of water column separation increases ; and when the mid valve is nearer to the discharge valve, the head rise at the point just before the mid valve increases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::526c3c16149f3e7f642e45b0aa1e5924 https://doi.org/10.1299/jsme1958.18.1151 Zobrazit plný text záznamu