Simulation of pressure-reducing pipeline system using tandem advanced automatic control valve

Since existing equipment and materials are used for the installation of a pressure-reducing pipeline system which automatic control valves, there is the outstanding problem that the series arrangement of the automatic control valves causes self-excited pressure vibration. At present, a new type of a...

Full description

Saved in:
Bibliographic Details
Published inTransactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering Vol. 1998; no. 196; pp. 597 - 609,a1
Main Authors Inagaki, H. (Kagoshima Univ. (Japan)), Shouji, J, Kondo, F
Format Journal Article
LanguageJapanese
Published The Japanese Society of Irrigation, Drainage and Rural Engineering 1998
Subjects
Automatic control valve
EQUIPO DE RIEGO
GENIE HYDRAULIQUE
HYDRAULIC ENGINEERING
Hydraulic test
INGENIERIA HIDRAULICA
IRRIGATION EQUIPMENT
MATERIEL D'IRRIGATION
Mathematical model
PIPES
PRESION
PRESSION
PRESSURE
Pressure-reducing pipeline system
Series arrangement
SIMULACION
SIMULATION
TUBERIA
TUYAU
Online AccessGet full text

Cover

More Information
Summary:Since existing equipment and materials are used for the installation of a pressure-reducing pipeline system which automatic control valves, there is the outstanding problem that the series arrangement of the automatic control valves causes self-excited pressure vibration. At present, a new type of automatic control valve with improved operating mechanism has been developed. In this paper, the theoretical model of this new type of automatic control valve is prepared, and the validity of the model is confirmed by verifying the results of a hydraulic test through simulation. In addition, the variation of flow rate in the case of series arrangement of the new type of automatic control valves is reproduced by preparing a model on the assumption of a pipe line at the actual site. As a result, it is confirmed that if the new type of automatic control valve sufficiently operates in response to the variation of flow rate, the pressure at the downstream side of the reducing valve is controlled by the fixed pressure, and such a disadvantageous phenomenon as resonance does not occur. Even in the fast changing conditions of flow rate where water hammering pressure occurs, the new type of automatic control valve is capable of controlling the water hammering pressure to certain extent. Therefore, it is expected that it has also some effect on a sudden change of conditions
Bibliography:1998007078
U30
N20
F06
ISSN:0387-2335
1884-7234
DOI:10.11408/jsidre1965.1998.597