發(fā)布時間：2019-06-09 12:45

【摘要】：隨著世界經(jīng)濟增長和科技領域發(fā)展,人類社會對環(huán)境資源越來越依賴,而陸地油氣等不可再生資源,經(jīng)過長時期大規(guī)模持續(xù)開采,已逐漸貧乏。最近幾年,海洋石油開采逐步升溫,自升式平臺在海洋石油的探索勘測、開采中起到重要作用。這種大背景下,自升式平臺的需求逐年增多。升降系統(tǒng)是自升式平臺非常重要組成部分,客戶對升降系統(tǒng)的制造質(zhì)量和功能調(diào)試提出了越來越高的要求;研究和完善升降系統(tǒng)建造和調(diào)試工藝是船廠目前亟待解決的問題。本文以2014年中集來福士交付的自升式平臺HYSY932為研究對象,分析了升降系統(tǒng)的傳統(tǒng)建造和調(diào)試中經(jīng)常出現(xiàn)的各種重要難題,詳細介紹樁腿建造,固樁架建造,升降裝置安裝和系統(tǒng)調(diào)試等工藝中出現(xiàn)的問題和困難點,通過比較其他船廠的建造流程,研究了適合船廠的升降系統(tǒng)建造工藝,文中并體現(xiàn)了關鍵環(huán)節(jié)的注意事項,解決了工藝執(zhí)行過程中發(fā)現(xiàn)的難題。樁腿結構和固樁架單元是升降系統(tǒng)的重要結構單元,其建造難點在于焊接溫度、尺寸精度和焊接質(zhì)量控制上;為了提高精度采用雙面同時對稱焊接、特殊胎架輔助、臨時馬板固定、畫線洋沖標記、經(jīng)緯儀實時測量等方法。焊接質(zhì)量的控制更加重要,其中熱處理、焊接材料和焊接方法、焊工的技能、預熱和保溫等都是直接影響焊接質(zhì)量的重要因素。在建造過程中,如何克服產(chǎn)生的應力和變形,如何修正自身建造精度和公差偏大問題,在本文都有明確說明。升降裝置的安裝和系統(tǒng)調(diào)試流程以及注意事項在本文中也重點闡述,總結了升降系統(tǒng)安裝和調(diào)試中遇到的疑點、難點,并研究出了具體的解決方案,最終完善了工藝的理論基礎,重點挑明了注意事項,為在建項目建造提供了理論參考,使現(xiàn)場建造指導工藝更淺顯易懂。
[Abstract]:With the growth of world economy and the development of science and technology, human society is more and more dependent on environmental resources, while non-renewable resources such as land oil and gas have become poor after a long period of large-scale continuous exploitation. In recent years, offshore oil exploitation has gradually heated up, and the self-elevating platform plays an important role in the exploration, survey and exploitation of offshore oil. In this context, the demand for self-elevating platform is increasing year by year. Lifting system is a very important part of self-lifting platform, customers put forward higher and higher requirements for the manufacturing quality and function debugging of lifting system, and studying and perfecting the construction and debugging technology of lifting system is an urgent problem to be solved in shipyard at present. In this paper, HYSY932, a self-lifting platform delivered by Laifus in 2014, is taken as the research object, and various important problems often occur in the traditional construction and debugging of the lifting system are analyzed, and the pile leg construction and pile fixing frame construction are introduced in detail. By comparing the construction flow of other shipyards, the construction technology of lifting system suitable for shipyards is studied, and the matters needing attention in the key links are also reflected in this paper. The difficult problems found in the process of process execution are solved. Pile leg structure and fixed pile frame element are important structural units of lifting system, and their construction difficulties lie in welding temperature, dimensional accuracy and welding quality control. In order to improve the accuracy, double-sided simultaneous symmetrical welding, special tire frame assistance, temporary horse plate fixation, drawing line impact marking, theodolite real-time measurement and so on. Welding quality control is more important, among which heat treatment, welding materials and welding methods, welder skills, preheating and heat preservation are all important factors that directly affect welding quality. In the process of construction, how to overcome the stress and deformation and how to correct the problem of large construction accuracy and tolerance are clearly explained in this paper. The installation, system debugging flow and matters needing attention of the lifting device are also described in this paper, the doubts and difficulties encountered in the installation and debugging of the lifting system are summarized, and the concrete solutions are worked out. Finally, the theoretical basis of the process is improved, and the matters needing attention are singled out, which provides a theoretical reference for the construction of the project under construction, and makes the field construction guidance process more simple and easy to understand.
【學位授予單位】：哈爾濱工程大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE95

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相關碩士學位論文 前2條

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2 梁曉玲;海上自升式鉆井平臺升降控制系統(tǒng)設計與研究[D];大連海事大學;2010年

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本文編號：2495568