지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
When the pumps stopped in the operation by the power failure, the hydraulic transients take place in the sudden change of a velocity of pipe line. Each and every water hammer problem shows the critical stage to be greatly affected the facts of safety and reliability in case of power failure. The field tests of the water hammer executed at Cheong-Yang booster pump station having an air chamber. The effects were studied by both the practical experiments and the CFD(Computational Fluid Dynamics : Surge 2008). The result states that the system with water hammering protection equipment was much safer when power failure happens. The following data by a computational fluid dynamic analysis are to be shown below, securing the system stability and integrity. (1) With water hammering protection equipment. (1) Change of pressure : Up to $15.5\;kg/cm^2$ in contrary to estimating $16.88\;kg/cm^2$. (2) Change rate of water level : 52~33% in contrary to estimating 55~27%. (3) Note that the operational pressure of pump runs approx. 145 m, lowering 155 m of the regularity head of pump. (4) Note that the cycle of water hammering delays from 80 second to 100 second, together with easing the function of air value at the pneumatic lines. (2) Change of pressure without water hammering protection equipment : Approximate $22.86\;kg/cm^2$. The comprehensive result says that the computational fluid dynamics analysis would match well with the practical field-test. It was able to predict Max. or Min. water hammering time in a piping system. This study aims effectively to alleviate water hammering in a pipe line to be installed with air chamber at the pumping station and results in making the stability of pump system in the end.
목차
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참고문헌 (6)
참고문헌 신청
김경엽 / 2002 / 에어챔버가 설치된 송수관로에서의 수격현상 / 대한기계학회논문집 B 26(2):1~183
김상균 / 2005 / 가압펌프장 수격완화설비에 대한 보수·보강 사례 / 한국유체기계학회 논문집 8(4):20~26
김상균 / 2005 / 직결식 펌프의 수격현상 / 한국유체기계학회 논문집 8(6):7~14
김상균 / 2007 / 에어챔버가 설치된 가압펌프 계통에서의 수격현상 / 에너지공학 16(4):187~193
Wylie, E. B / 1993 / Fluid Transients in Systems / Prentice Hall
김상균 / 2005 / 가압펌프장 수격완화설비에 대한 보수·보강 사례 / 한국유체기계학회 논문집 8(4):20~26
김상균 / 2005 / 직결식 펌프의 수격현상 / 한국유체기계학회 논문집 8(6):7~14
김상균 / 2007 / 에어챔버가 설치된 가압펌프 계통에서의 수격현상 / 에너지공학 16(4):187~193
Wylie, E. B / 1993 / Fluid Transients in Systems / Prentice Hall
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