1000A용 버터플라이 밸브 주요부품의 구조해석

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 23; no. 1; pp. 140 - 145
• Main Authors: 공유식(Yu-Sik Kong), 김선진(Seon-Jin Kim), 정민화(Min-Hwa Jung)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2009
• Subjects: 해양공학; Valve seat 밸브시트; Disc 디스크; Tensile strength 인장강도; Structure safety 구조 안전성; Safety factor 안전계수; Butterfly Valve 버터플라이밸브
• ISSN: 1225-0767; 2287-6715

This paper deals with a stability evaluation of a butterfly valve using the body and disc of a valve seat. The experimental results of a strength evaluation are shown using STS316 stainless steel and spheroidal graphite cast iron (GCD450). The disc material was made from GCD450. The results of the strength analysis are as follows: Ultimate tensile strength 485MPa, Yield strength 370 MPa, Young's modulus $1.1{\times}10^5$, and Poisson's ratio v = 0.28. For the results of the disc analysis, the safety factor was about 4. This shows that a design was derived that satisfied the requirements of structural safety. However, some problems, such as the deflection and deformation of the disc, may occur when the sea water has back flow with a high pressure.