[논문]가압 펌프장에서 설계인자들이 수격에 의한 압력변동에 미치는 영향

박종훈; 성재용

doi:10.17664/ksghe.2021.17.4.015

가압 펌프장에서 설계인자들이 수격에 의한 압력변동에 미치는 영향
Effect of Design Factors in a Pump Station on Pressure Variations by Water Hammering 원문보기

한국지열·수열에너지학회논문집 = Journal of the Korean Society for Geothermal and Hydrothermal Energy, v.17 no.4, 2021년, pp.15 - 27

박종훈 (서울과학기술대 융합과학대학원) , 성재용 (서울과학기술대학교 기계자동차공학과)

Abstract ▼ AI-Helper

In this study, the effect of design factors in a pump station on the pressure variations which are the main cause of water hammering has been investigated by numerical simulations. As design factors, the flow rate, Young's modulus, diameter, thickness, roughness coefficient of pipeline are considered. The relationships between the pressure variations and the design factors are analyzed. The results show that the pressure variation increases sensitively with the flow rate and Young's modulus, and increases gradually with the thickness and roughness coefficient of pipe, whereas it decreases with the pipe diameter. The wavelength of the pressure wave becomes longer for a smaller Young's modulus, a smaller pipe thickness and a bigger pipe diameter. These relationships are nondimensionalized, and logarithmic curve-fitted functions are proposed by regression analysis. Most effective factors on the nondimensional pressure variation is Young's modulus. Flow rate, roughness coefficient, relative thickness and pipe diameters are the next impact factors.

주제어

표/그림 (11)

그림 Fig. 1. Longitudinal pipeline profile at the Yeosu Samil pump station
그림 Fig. 2. Node points used for Surge program which represent vertical positions of the pipeline section
표 Table 1. Conditions for numerical simulations
그림 Fig. 3. Pressure profile along the pipeline in the basic condition
그림 Fig. 4. Variations of pressure profile according to the number of pump runs
그림 Fig. 5. Variations of pressure profile according to the Young’s modulus of the pipe
그림 Fig. 6. Pressure difference according to the design factors; (a) flow rate(Q), (b) Young’s modulus of pipe(E), (c) diameter of pipe(D), (d) thickness of pipe(δ), (e) roughness coefficient of pipe(C)
그림 Fig. 7. Pressure waves according to design factors; (a) flow rate(Q), (b) Young’s modulus of pipe(E), (c) diameter of pipe(D), (d) thickness of pipe(δ), (e) roughness coefficient of pipe(C)
표 Table 2. Amplitude and period of the pressure fluctuation according to the design parameters
그림 Fig. 8. Nondimensional pressure variations according to the nondimensional design factors; (a) Reynolds number (Q=constant), (b) Reynolds number (D=constant), (c) relative pipe thickness, (d) roughness coefficient, (e) nondimensional Young's modulus
표 Table 3. Coefficients of logarithmic curve-fit functions according to the nondimensional design factors

참고문헌 (17)

Kim, Y. H., 2021, Piping Engineering, Books Hill.
Watters, G. Z., 1984, Analysis and Control of Unsteady Flow in Pipelines, 2nd Ed., Butterworth.
Watters, G. Z., 1979, Modern Analysis and Control of Unsteady Flow in Pipelines, Ann Arbor Science Publisher.
Streeter, V. L., and Wylie, E. B., 1967, Hydraulic transients caused by reciprocating pumps, J. Eng. Power, Vol. 89, No. 4, pp. 615-620.
Wylie, E. B., Streeter, V. L., and Suo, L., 1993, Fluid Transients in System, Prentice Hall.
Lingrieddy S. and Wood, D. J., 2021, Surge Analysis and Wave Plan Method, KYPipe LLC.
Lee, J. H., Chung, K. S., Kim, Y. I., and Sa, K. Y., 2010, A study on the effect of water hammering on pipe supports, Proceedings of the SAREK Conference, pp. 239-244.
Kim, S. Y., Joo, S. S., Lee, S. H., and Yoon, K. S., 2016, Assessment of hammer of penstock by emergency shutdown, Proceedings of the KSCE Conference, pp. 200-201.
Kim, S. G., and Lee, K. B., 2007, Water hammer in the pump pipelines system with an airchamber, J. Energy Engineering, Vol. 16, No. 4, pp. 187-193.
Yang, C. S., 2015, A Study About Facility Damage Protection System Against Water Hammer, Ph. D. Thesis, Incheon University.
Park, J. H., 2010, A Study of Waterhammer Analysis on Pump System, Master's Thesis, Hanyang University.
Korea Water Resources Corporation, 2005, Buan Dam System Water Hammer Analysis and Empirical Experiment, Report for Research Service.
Park, H. Y., Park, J. H., and No, S. M., 2010, Pipe Network Analysis Design using Pipe 2010, Hongneung Science Publishing Company.
Park, H. Y., and Lee, H. D., 2021, Pipe Network Irregular Flow Analysis Theory and Practice, Gong-Gam Books.
Lee, M. H., 1998, An Analysis of Water Hammer in Pipeline Systems with Pump, Journal of the Korean Society Marine Engineering, Vol. 22, No. 1, pp. 92-99.
Ra, B. P., and Park, J. H., 2008, Application & Examination of the plan for optimum stability through Water-hammer in water pipe line and booster pump station, Proceedings of the KFMA Conference, pp. 197-203.
Yang, C. S., and Lee, S. K., 2011, Water-hammer in the Pump Pipeline System with and without an Air-Chamber, Journal of the KOSOS, Vol. 26, No. 1, pp. 1-7.

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 논문명, 저널/프로시딩명, 저자 , 발행년, 권, 호, 시작페이지, 끝페이지, 발행기관 관리번호, 논문명, 대등논문명, 저자 , 저널/프로시딩명, 발행기관, 발행년, 발행언어, 권, 호, 시작페이지, 끝페이지, ISBN, ISSN, 주제분야, 키워드, 초록(한글), 초록(영문), 저자(소속기관)
저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증