深水新型水下立管支撑平台研究     

潘泽华  赵耀  严俊 《海洋工程》2015,33(6):119-128

FPSO系统在深海海洋油气资源开发中扮演着重要的角色,而深水FPSO系统水下立管管路较长,立管整体重量较大,立管在水流作用下产生的涡激振动也较强,这些将给FPSO主船体带来严重的稳性、强度及疲劳问题。鉴于此,深海FPSO系统在油气资源开发过程中,须在水下一定深度设置若干水下软管支撑浮体,用以支撑来自深海海底的管线,减轻深水立管对FPSO的负载作用。随着深海资源开发的深入发展,传统水下软管支撑浮体作为FPSO系统的关键装备已经无法满足深海开采的需求,寻求大型化、深海化、生命周期长久化的新型水下立管支撑平台迫在眉睫,设计简便快捷、低风险的安装方法成为其开发过程中的重点和难点。详细描述了水下软管支撑浮体的产生及其发展历程,针对深海开发的需求提出了新型立管支撑平台的新概念,着重对新概念下下水安装更便捷的耐压立管支撑平台设计原理及其下水安装方式展开了分析,最后对水下软管支撑浮体和新型立管支撑平台的关键技术进行了总结,并提出了需进一步解决的问题。  相似文献   

A study of spar buoy floating breakwater     

Nai-Kuang Liang  Jen-Sheng Huang  Chih-Fei Li 《Ocean Engineering》2004,31(1):43-60

A floating breakwater produces less environmental impact, but is easily destroyed by large waves. In this paper, the spar buoy floating breakwater is introduced with a study on the wave reflection and transmission characteristics and mooring line tension induced by the waves. Mei (The Applied Dynamics of Ocean Surface Waves, Wiley, New York (1983) 740 p) proposed a theoretical solution for the reflection and transmission coefficients as the wave propagates through a one-layer slotted barrier. For a multiple-layer fence system, the analytical solution is proposed linearly. The results show that the theoretical computations agree well with the experimental trends. For a multiple-layer fence system, the transmission coefficients become maximal as the layer spacing to wavelength ratio moves to 1/2. Conversely, the coefficients become minimal, as the ratio moves to 0.3. To estimate the maximum tension of the mooring line, both numerical calculations and laboratory experiments were executed. The numerical calculation results were similar to the experimental results.  相似文献   

A comparison of sea-state parameters from nautical radar images and buoy data     

P. Izquierdo  C. Guedes Soares  J. C. Nieto Borge  G. R. Rodríguez 《Ocean Engineering》2004,31(17-18):2209-2225

Nautical radar and scalar buoy measurements of ocean wind generated waves have been analysed to compare the spectral parameters estimated from both sensors. The time series of different sea-state parameters and the differences and ratios of the values obtained from radar and buoy data using different analysis methods are compared. It has been observed that main differences between the sea-state parameters derived by using measurements obtained from both sensors result both from device characteristics and from the method of spectral estimation. In particular, it is shown that the Nyquist frequency has an important effect on the value of the sea-state parameters depending on spectral moments of order higher than zero.  相似文献   

表层漂流浮标及其跟踪技术   总被引：3，自引：0，他引：3  

余立中  山广林 《海洋技术学报》1997,16(2):1-11

漂流浮标是一种小型海洋资料浮标，具有自动采集海洋水文气象数据，自动定位与数据传输的功能，它可以在海洋中表层海流进行大尺度测量与描绘，属一次性使用仪器，其体积小，便于投放，按照不同的使用目的的可连续在海上工作几个月到两年。  相似文献   

极区卫星跟踪浮标在北极科学考察中的应用     

熊焰  张文良  崔琳 《海洋技术学报》2004,23(2):54-57

介绍了两套极区卫星跟踪水文气象自动观测浮标的研制目的、结构组成与功能，以及在中国第二次北极科学考察中的现场布放和应用。同时也介绍了由美国进口的ZENO冰浮标的结构、功能和布放情况，并将极区卫星跟踪浮标和美国ZENO冰浮标做了相应的比较和分析。  相似文献   

船型海洋资料浮标的设计     

袁新  王景田 《海洋科学进展》2002,20(2):118-124

介绍了我国船型海洋资料浮标浮标体和锚泊系统的设计方案 ,该浮标可适用于远海、深海海域布放 ,定点实时获取布放海域的水文、气象等有关要素的现场参数  相似文献   

FZF3-1型海洋资料浮标系统     

卜照蓬  刘岩 《海洋技术学报》2003,22(2):59-61,65

介绍了我国自行研制的最新一代用于海洋环境监测的大型FZF3—1型海洋资料浮标系统，论述了该系统的总体技术结构、原理和性能，以及应用PC—104微机作为浮标数据采集控制系统的情况。  相似文献   

水质监测浮标示范区试验   总被引：1，自引：0，他引：1  

廉双喜  李林奇 《海洋技术学报》2001,20(1):116-123

本文介绍了863－818支持研究的最新成果“近海污染／生态环境自动监测装置（水质监测浮标）”在镇海示范区试验的情况和数据分析结果，对各测量要素使用的水质分析仪和传感器的特点和不足进行了简单的介绍。  相似文献   

三锚浮标系统研究   总被引：1，自引：0，他引：1  

白强  袁新  杨永春  刘岩 《海洋技术学报》2007,26(4):27-29

海洋浮标是一种现代化的海洋观测设施。它具有全天候、全天时稳定可靠的收集海洋环境资料的能力,并能实现数据的自动采集、自动标示和自动发送。海洋浮标与卫星、飞机、调查船、潜水器及声波探测设备一起,组成了探测海洋奥秘的主体监测系统。论文详细阐述了水面浮标采用的新型三锚系留系统的组成、优点、以及克服的技术难题。  相似文献   

Ocean variability North of New Guinea derived from TRITON buoy data     

Yuji Kashino  Iwao Ueki  Yoshifumi Kuroda  Andri Purwandani 《Journal of Oceanography》2007,63(4):545-559

We investigated variability in the ocean surface-subsurface layer north of New Guinea using Triangle Trans-Ocean Buoy Network (TRITON) buoys at 2°N, 138°E and 0°N, 138°E during the period from October 1999 to July 2004. Both North and South Pacific waters were observed below the subsurface at these stations. The variability in the subsurface waters was particularly high at 2°N, 138°E. Clear interannual variability occurred near the surface; the water type differed before and after onset of the 2002–03 El Niño. Before summer 2001, water that appeared to be advected from the central equatorial Pacific occupied the near surface layer. After autumn 2001, waters advected by the New Guinea Coastal Current were observed near the surface. Intraseasonal and seasonal variations were also observed below the subsurface. With regard to seasonal variability, the salinity of the subsurface saline water, the South Pacific Tropical Water, was generally high during the boreal summer-autumn, when the New Guinea Coastal Undercurrent was strong. Intraseasonal fluctuations on a scale of 20 to 60 days were also seen and may have been associated with intrinsic oceanic variability, such as ocean eddies, near the stations. Ocean variability in the thermocline layer between 100 and 200 m greatly affects the surface dynamic height variability; water variability before 2001 and variability in the pycnocline depth after 2002 are important factors affecting the thermocline.  相似文献