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J. Korean Soc. Hazard Mitig. > Volume 18(7); 2018 > Article
Journal of the Korean Society of Hazard Mitigation 2018;18(7):333-343.
DOI: https://doi.org/10.9798/KOSHAM.2018.18.7.333    Published online December 31, 2018.
오리피스를 고려한 송수관로 수충격 완화방법에 대한 연구
심규대1, 강용석2, 정준연3, Mohamed Abdellatif4, 김동균5
1정회원, 1 홍익대학교 토목공학과 박사과정, 2 GS건설 환경공정설계팀 공정엔지니어
2GS건설 환경공정설계팀 공정엔지니어
3GS건설 환경공정설계팀 공정엔지니어
4GS건설 Azzour WDC II Project 화공엔지니어
5정회원, 홍익대학교 토목공학과 교수
The Study of Pressure Suppression in Transmission Pipelines by Orifice
Kyudae Shim1, Yongsuk Kang2, Joonyeon Choung3, Mohamed Abdellatif4, Dongkyun Kim5
1Member, 1 Ph.D Candidate, Department of Civil Engineering, Hongik University, 2 Process Engineer, GS Engineering and Construction Environment Process Engineering Team
2Process Engineer, GS Engineering and Construction Environment Process Engineering Team
3Process Engineer, GS Engineering and Construction Environment Process Engineering Team
4Chemical Specialist, GS Engineering and Construction Azzour WDC II Project Team
5Member, Professor, Department of Civil Engineering, Hongik Universit
Corresponding author:  Dongkyun Kim, Tel: +82-2-320-1613, Fax: +82-2-322-1244, 
Email: dekaykim@gmail.com
Received: 4 October 2018   • Revised: 5 October 2018   • Accepted: 18 October 2018
This study investigated the variation of pressure for a pumping station in Azzour Water Distribution Complex, (WDC) II, and attempted to overcome the problem of pressure suppression in pipelines, due to power failure. The transient flow was calculated using the commercial program SURGE, and the resulting value was used in the initial conditions of a pump shutdown. The simulation results show that the maximum pressure was 1.7 times (for Wafra) and 4.2 times (for Mina Abdullah) higher than the normal pressure in the steady state. The surge protection facilities were accordingly designed and surge vessels were constructed with orifice dimensions of 121.4 m3×275 mm for Mina Abdullah and 43.1 m3×300 mm for Wafra, respectively. The performance of the surge protection facilities on commission, were verified and the surge pressure remained within the expected allowable pressures considering the occurrence of a water hammer.
Key Words: Water Hammer, Surge Vessel, Orifice, Optimization
본 연구에서는 쿠웨이트 Azzour WDC (Water Distribution Center) II 송수시설 운영 시 정전으로 인하여 발생할 수 있는 관로 내 압력을 검토하고 대비방안을 모색하였다. 이를 위하여 관로 내 흐름을 모의하는 상용소프트웨어 SURGE로 펌프가 급정지되는 경우의 초기조건을 적용하여 관로내 급변류를 모의하였다. 모의 결과, 정상상태 대비 최대 1.7배(Wafra)에서 4.2배(Mina Abdulla)의 수충압이 발생할 수 있음을 확인하였으며, 이에 대비하기 위한 시설로 Mina Abdullah 송수라인은 서지탱크(121.4 m3)와 오리피스 (275 mm)를. Wafra 송수라인은 서지탱크(43.1 m3)와 오리피스(300 mm)를 설계 후 시공하였다. 시운전을 통하여 수충격 방지 시설의 성능은 검증되었고, 발생한 수충압은 예측한 허용 압력 이내로 확인되었다.
핵심용어: 수충격, 서지탱크, 오리피스, 최적화
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