本文關(guān)鍵詞：深海FPSO關(guān)鍵管路應力分析　出處：《江蘇科技大學》2015年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 工況分析 管道應力 船體變形 設(shè)備振動 水錘載荷

【摘要】：海上浮式生產(chǎn)儲卸油裝置(Floating Production Storage and Offloading,FPSO)以其機動性和移動性好、具有適應深海采油的能力、在深海區(qū)域中有較大的抗風浪能力、以及大產(chǎn)量的油氣水生產(chǎn)處理能力和大的原油存儲能力等優(yōu)點,成為海洋工程裝備中面向深海油氣田開發(fā)的主流手段。管路系統(tǒng)的正常運行對船舶、人員和設(shè)備的安全有著至關(guān)重要的作用,惡劣的海上作業(yè)環(huán)境和油氣生產(chǎn)的高危險性也對FPSO管道系統(tǒng)的安全提出了更高的要求。因此,對深海FPSO管道系統(tǒng)進行應力分析顯得非常的必要。本文以一工作于南海海域的30萬噸的FPSO關(guān)鍵管路系統(tǒng)為研究對象,探討了風載、波浪載荷以及船體變形等各種載荷對管道應力的影響,對FPSO壓載水系統(tǒng)、主機排煙管系統(tǒng)、甲板貨油管系統(tǒng)進行了靜力分析,開展了一次應力和二次應力的校核;并在靜力分析的基礎(chǔ)上,研究了水錘載荷和設(shè)備振動對管道應力的影響。本文的具體研究內(nèi)容如下:1、以FPSO某發(fā)電機排煙系統(tǒng)為例討論了組合工況法和獨立載荷法兩種方法設(shè)計的工況的對管道應力、約束載荷以及位移大小的影響,進而分析兩種方法各自的優(yōu)點以及應用范圍。2、根據(jù)確定的分析工況,對FPSO主機排煙系統(tǒng)、甲板貨油管系統(tǒng)進行一次應力和二次應力的校核和分析。對FPSO主機排煙系統(tǒng)進行靜力分析時,主要考慮溫度載荷對管道應力的影響;對FPSO甲板貨油管系統(tǒng)進行靜力分析時,考慮風載以及船體變形對管道應力的影響,并分析船體變形荷載交變作用對管道的疲勞破壞。3、以FPSO壓載水系統(tǒng)為研究對象,利用CAESARII軟件的動態(tài)分析模塊,分析了壓載水系統(tǒng)遭受水錘載荷作用時管道應力的變化,并對應力超過規(guī)范要求的管道進行相關(guān)約束的調(diào)整,保證壓載系統(tǒng)的安全運行。4、管道系統(tǒng)在單泵振動和多泵組合振動情況下,選取振動良好和振動危險兩種等級下的振動烈度為激勵載荷,研究管道最大應力隨轉(zhuǎn)速的變化情況,并對計算結(jié)果進行對比分析。
[Abstract]:Floating Production Storage and Offloading. Because of its good mobility and mobility, FPSO has the ability to adapt to the deep-sea oil recovery, and has a great ability to resist wind and waves in the deep-sea area. As well as the advantages of large oil, gas and water production processing capacity and large crude oil storage capacity, it has become the mainstream means for deep-sea oil and gas field development in marine engineering equipment. The normal operation of pipeline system is of great importance to the ship. The safety of personnel and equipment plays an important role. The harsh offshore working environment and the high risk of oil and gas production also put forward higher requirements for the safety of FPSO pipeline system. It is very necessary to analyze the stress of deep-sea FPSO pipeline system. In this paper, a 300,000 ton FPSO pipeline system working in the South China Sea is taken as the research object, and the wind load is discussed. The influence of wave load and hull deformation on the stress of pipeline is analyzed. The static analysis of FPSO ballast water system, main engine exhaust pipe system and deck cargo tubing system is carried out. The check of primary stress and secondary stress is carried out. On the basis of static analysis, the influence of water hammer load and equipment vibration on pipeline stress is studied. The specific contents of this paper are as follows: 1. Taking the exhaust system of a generator in FPSO as an example, the effects of combined working condition and independent load on the stress, constraint load and displacement of pipeline are discussed. Then the advantages of the two methods and the scope of application. 2. According to the determined analysis conditions, the FPSO main engine smoke exhaust system. The primary stress and secondary stress are checked and analyzed in the deck cargo tubing system. The influence of temperature load on pipeline stress is mainly considered in the static analysis of FPSO exhaust system. In the static analysis of FPSO deck cargo tubing system, the influence of wind load and hull deformation on pipeline stress is considered, and the fatigue failure of pipeline caused by ship hull deformation load alternation is analyzed. Taking the FPSO ballast water system as the research object, using the dynamic analysis module of the CAESARII software, the variation of the pipeline stress when the ballast water system is subjected to the water hammer load is analyzed. And the stress in excess of the requirements of the requirements of the relevant constraints of the pipe adjustment to ensure the safe operation of ballast system. 4, the pipeline system in the case of single pump vibration and multi-pump combination vibration. The vibration intensity of good vibration and vibration danger is selected as excitation load to study the variation of maximum stress with rotational speed and to compare and analyze the calculated results.
【學位授予單位】：江蘇科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE952

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本文編號：1388903