深海原油转驳船定位模式及定位能力分析
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摘要
为了给原油转驳船的动力定位系统设计及设备选型提供技术参考,本文分析了原油转驳船的作业模式,计算了各模式下原油转驳船受到的环境载荷。通过采用远场积分法,获得了不同浪向下原油转驳船的二阶定常波浪力,开展了推进装置推力分配及主推进装置和动力定位推进装置布置研究,并针对原油转驳船推力系统的完整模式和各种失效模式,计算并绘制了原油转驳船作业工况的动力定位能力曲线。计算结果表明:该船的动力定位系统能满足DP-2级别要求,能保证原油转驳船在设计海况下正常作业,可为实际工程中推进定位系统设计提供参考。
In order to provide technical reference for the design of dynamic positioning system and equipment selection of cargo transfer vessel( CTV),in this paper,the operation mode of CTV is disassembled and the environmental load calculation of CTV is performed in each application mode. The far-field integration method was applied to obtain the second order steady wave force of CTV in different wave directions. The thrust allocation of propulsion device and arrangement of the main propulsion device and propulsion device for dynamic positioning were researched.For the complete mode and various failure modes of the CTV thrust system,the dynamic positioning ability curve of the CTV operating conditions was calculated and plotted. The calculation results show that the ship's dynamic positioning system can meet DP-2 level requirements and can ensure that the CTV is able to operate normally under the design sea condition. This research provides reference for the design of thrust and positioning system of CTV.
In order to provide technical reference for the design of dynamic positioning system and equipment selection of cargo transfer vessel( CTV),in this paper,the operation mode of CTV is disassembled and the environmental load calculation of CTV is performed in each application mode. The far-field integration method was applied to obtain the second order steady wave force of CTV in different wave directions. The thrust allocation of propulsion device and arrangement of the main propulsion device and propulsion device for dynamic positioning were researched.For the complete mode and various failure modes of the CTV thrust system,the dynamic positioning ability curve of the CTV operating conditions was calculated and plotted. The calculation results show that the ship's dynamic positioning system can meet DP-2 level requirements and can ensure that the CTV is able to operate normally under the design sea condition. This research provides reference for the design of thrust and positioning system of CTV.
引文
[1]KARE S, ARNE S. Cargo transfer vessel:US,US2017341715A1[P]. 2017-11-30.
[2]IMCA Marine Division. Introduction to dynamic positioning[EB/OL]. http://www.doc88.com/p-4953937577048.html.
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[4]SRINIVASAN N,SEN D. Time domain simulation of DP semi-submersibles in numerical wave-tank for large nonlinear random waves[C]//Dynamic Positioning Conference.Dynamic Positioning Committee,2002.
[5]孙丽萍,刘雨,李小平.深水半潜式钻井平台DP3动力定位能力分析[J].中国造船,2011,52(4):100-108.SUN Liping,LIU Yu,LI Xiaoping. DP3 capability analysis of a semisubmersible drilling platform[J]. Shipbuilding of China,2011,52(4):100-108.
[6]陈恒.深海半潜式平台动力定位推力系统设计研究[D].上海:上海交通大学,2008.CHEN Heng. Research on design of DP thruster system of deepwater semi-submersible platform[D]. Shanghai:Shanghai Jiaotong University,2008.
[7]IMCA. IMCA M 140 Rev I,Specification for DP capability plots[S]. The International Marine Contractors Association,2000.
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[9]API. API RP 2SK,Recommended practice for design and analysis of station keeping systems for floating structures[S]. API,1997.
[10]Oil Companies International Marine Forum. Prediction of wind and current loads on VLCCs[M]. 2nd ed. London:Witerby&Co. Ltd,1994.
[11]FALTINSEN O M.船舶与海洋工程环境载荷[M].杨建民,肖龙飞,葛春花,译.上海:上海交通大学出版社,2008:101-103.FALTINSEN O M. Sealoads on ships and offshore structures[M]. YANG Jianmin,XIAO Longfei,GE Chunhua,trans. Shanghai:Shanghai Jiaotong University Press,2008:101-103.
[12]HOLTROP J,MENNEN G G J. An approximate power prediction method[J]. International shipbuilding progress,1982,29(335):166-170.
[13]王川,李辉,任慧龙,等.深水铺管船的动力定位能力评估系统[J].华中科技大学学报(自然科学版),2015,43(2):61-65.WANG Chuan,LI Hui. REN Huilong,et al. Dynamic positioning capacity system on pipe laying vessel[J]. Journal of Huazhong University of Science and Technology(natural science edition),2015,43(2):61-65.
[14]刘正锋,孙强,刘长德.动力定位系统推力能力曲线计算分析[J].船舶力学,2016,20(5):540-548.LIU Zhengfeng,SUN Qiang,LIU Changde,Thrust ability evaluation analysis of a dynamic positioning system[J].Journal of ship mechanics,2016,20(5):540-548.
[2]IMCA Marine Division. Introduction to dynamic positioning[EB/OL]. http://www.doc88.com/p-4953937577048.html.
[3]HOLVIK J,SIMRAD K. Basics of dynamic positioning[C]//Dynamic Positioning Conference. 1998.
[4]SRINIVASAN N,SEN D. Time domain simulation of DP semi-submersibles in numerical wave-tank for large nonlinear random waves[C]//Dynamic Positioning Conference.Dynamic Positioning Committee,2002.
[5]孙丽萍,刘雨,李小平.深水半潜式钻井平台DP3动力定位能力分析[J].中国造船,2011,52(4):100-108.SUN Liping,LIU Yu,LI Xiaoping. DP3 capability analysis of a semisubmersible drilling platform[J]. Shipbuilding of China,2011,52(4):100-108.
[6]陈恒.深海半潜式平台动力定位推力系统设计研究[D].上海:上海交通大学,2008.CHEN Heng. Research on design of DP thruster system of deepwater semi-submersible platform[D]. Shanghai:Shanghai Jiaotong University,2008.
[7]IMCA. IMCA M 140 Rev I,Specification for DP capability plots[S]. The International Marine Contractors Association,2000.
[8]NIENHUIS I U. Simulations of low frequency motions of dynamically positioned offshore structures[R]. Wageningen,The Netherlands:Royal Institution of Naval Architects Transactions,1987.
[9]API. API RP 2SK,Recommended practice for design and analysis of station keeping systems for floating structures[S]. API,1997.
[10]Oil Companies International Marine Forum. Prediction of wind and current loads on VLCCs[M]. 2nd ed. London:Witerby&Co. Ltd,1994.
[11]FALTINSEN O M.船舶与海洋工程环境载荷[M].杨建民,肖龙飞,葛春花,译.上海:上海交通大学出版社,2008:101-103.FALTINSEN O M. Sealoads on ships and offshore structures[M]. YANG Jianmin,XIAO Longfei,GE Chunhua,trans. Shanghai:Shanghai Jiaotong University Press,2008:101-103.
[12]HOLTROP J,MENNEN G G J. An approximate power prediction method[J]. International shipbuilding progress,1982,29(335):166-170.
[13]王川,李辉,任慧龙,等.深水铺管船的动力定位能力评估系统[J].华中科技大学学报(自然科学版),2015,43(2):61-65.WANG Chuan,LI Hui. REN Huilong,et al. Dynamic positioning capacity system on pipe laying vessel[J]. Journal of Huazhong University of Science and Technology(natural science edition),2015,43(2):61-65.
[14]刘正锋,孙强,刘长德.动力定位系统推力能力曲线计算分析[J].船舶力学,2016,20(5):540-548.LIU Zhengfeng,SUN Qiang,LIU Changde,Thrust ability evaluation analysis of a dynamic positioning system[J].Journal of ship mechanics,2016,20(5):540-548.