Study on key performance parameters of hydro-pneumatic tensioner for top tensioned riser |
| |
| Institution: | 1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiaotong University, Shanghai 200240, China;3. Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;1. College of Water conservancy and Environmental Engineering, Zhengzhou University, Zhengzhou, 450001, PR China;2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, No. 1, Xikang Road, Nanjing, 210098, China;3. College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, 450001, China;4. Faculty of Petroleum and Mining Engineering, Suez University, 43721, Suez, Egypt;1. College of Ocean Science and Engineering, Shanghai Maritime University, 1550 Haigang Rd., Shanghai, 201304, China;2. Institute for Ocean Engineering, China University of Petroleum, 18 Fuxue Rd., Beijing, 102249, China;3. Department of Aeronautics and Astronautics, Fudan University, 220 Handan Rd., Shanghai, 200433, China;1. School of Naval Architecture and Ocean Engineering, Dalian University of Technology, Liaoning, China;2. Nantong COSCO KHI Ship Engineering Co. LTD, Nantong, Jiangsu, China;3. School of Civil Engineering, Dalian University of Technology, Liaoning, China;4. Offshore Oil Engineering Co. LTD, Tianjin, China |
| |
| Abstract: | In this paper an improved mathematical model of a hydro-pneumatic tensioner (HPT) system for top tensioned riser (TTR) is derived by consideration of friction, mass of piston and piston rod, tension loss in hydraulic oil piping, and compressibility of hydraulic oil. The vertical motion of the riser string is also considered. Subsequently, the proposed detailed model and the conventional simplified model are comparatively studied. Finally, the tension characteristic and performance parameters of the HPT are analyzed based on the proposed model. Results show that the conventional simplified model indeed overestimates the tension of tensioner as it neglects some performance parameters resulting in tension loss. The diameters of piston and piston rod and the initial pressure of high pressure (HP) gas have the most significant influence on the tension of the tensioner. The initial volume of HP gas and the initial pressure of low pressure (LP) gas also have some impact. The influence of the initial volume of LP gas and the inner diameter and length of the piping is relatively small. The research has some reference value for HPT and TTR design. |
| |
| Keywords: | Top tensioned riser Hydro-pneumatic tensioner Mathematical model Parameter analysis |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
