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http://dx.doi.org/10.7842/kigas.2013.17.2.70

A Study on the Steam Hammering Characteristics by Sudden Closure of Main Stop Valve in the Main Steam Piping System of a Power Plant  

Ha, Ji-Soo (Dept. of Environmental Science, Keimyung University)
Lee, Boo-Youn (Dept. of Mechanical and Automobile Engineering, Keimyung University)
Publication Information
Journal of the Korean Institute of Gas / v.17, no.2, 2013 , pp. 70-77 More about this Journal
Abstract
The present study has been carried out to analyze the effect of steam hammering on the steam piping system including the final superheater, the high pressure turbine, check valve and the first reheater by sudden stoping of main stop valve in a power plant. For the present steam hammering analysis, the well known Flowmaster software has been used to model the steam piping system and the time dependent characteristics of pressure and steam mass flow rate has been conducted. Using the result of the unsteady pressure and steam mass flow rate, the forces acting on the elbows in the piping system has been derived. From the present analysis, it has been elucidated that the elbow just before the main stop valve and the elbow near the connection pipe between bypass pipe and check valve had the largest force among the elbows in the steam piping system. The structural safety diagnostics study on the elbow and the supporting structures of the steam piping system of a power plant will be conducted in the future by the present results of the forces acting on the elbow.
Keywords
steam hammering; steam piping system; power plant; final superheater; first reheater; main stop valve; check valve; elbow; pressure; steam mass flow rate; force;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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