【摘要】：伴隨海洋能源的開發(fā)向深海不斷發(fā)展，海底石油管道成為石油資源從深海油田向大陸輸送的重要途徑，海底石油管道的安全問題日益彰顯�，F(xiàn)今保護(hù)海底管道的主流方法為后挖溝法，即海底管道鋪設(shè)完成后，沿管道挖掘出一定深度的溝槽并使管道落入其中，增加海底管道的穩(wěn)定性。海底犁式挖溝機(jī)作為一種結(jié)構(gòu)簡(jiǎn)單、工作效率高、工況適應(yīng)性強(qiáng)的后挖溝設(shè)備具有廣闊的應(yīng)用前景。論文課題來源于海洋石油工程股份有限公司的“硬質(zhì)土挖溝技術(shù)與裝備研究”項(xiàng)目，目的是研制具有自主知識(shí)產(chǎn)權(quán)的海底犁式挖溝機(jī)。 海底犁式挖溝機(jī)的犁體一般設(shè)計(jì)為可開合的左右對(duì)稱的分體式結(jié)構(gòu)，作業(yè)時(shí)左右犁，就位于海底管道上方；位于挖溝機(jī)首尾端的管道機(jī)械手抓取管道并提升至規(guī)定高度，，置于導(dǎo)管架內(nèi)，左右犁閉合，通過作業(yè)母船牽引進(jìn)行挖溝作業(yè)。管道機(jī)械手與導(dǎo)管架組成管道調(diào)整機(jī)構(gòu)，在挖溝機(jī)就位時(shí)完成管道的抓取、釋放，在作業(yè)過程中實(shí)現(xiàn)挖溝機(jī)的導(dǎo)向，及對(duì)管道的保護(hù)，在挖溝機(jī)的整個(gè)作業(yè)過程中僅有這部分結(jié)構(gòu)與管道發(fā)生直接接觸。挖溝機(jī)工作的前提是不允許對(duì)管道造成機(jī)械破壞，因此對(duì)于在整個(gè)作業(yè)過程中管道受力狀態(tài)及其與管道調(diào)整裝置關(guān)系的研究具有重要的理論意義與應(yīng)用價(jià)值。 本論文對(duì)作業(yè)過程中管道受力狀態(tài)進(jìn)行了理論分析，在此基礎(chǔ)上進(jìn)行了挖溝機(jī)管道調(diào)整裝置的結(jié)構(gòu)設(shè)計(jì)，并進(jìn)行了試驗(yàn)驗(yàn)證。論文主要內(nèi)容如下： 根據(jù)海底挖溝機(jī)作業(yè)流程提出具有提升，導(dǎo)向功能的管道調(diào)整機(jī)構(gòu)設(shè)計(jì)方案。針對(duì)管道調(diào)整機(jī)構(gòu)抓取海底管道產(chǎn)生的懸跨段，建立海底管道懸跨段受力分析模型，使用有限元軟件計(jì)算海底管道受力，通過分析懸跨段在不同剛度土壤表面接觸點(diǎn)土抗力及土壤變形分布,確定管道挖溝機(jī)初始作業(yè)點(diǎn)。根據(jù)抓取海底管道所需提升力為依據(jù)完成管道調(diào)整機(jī)構(gòu)設(shè)計(jì)受力分析及結(jié)構(gòu)設(shè)計(jì)，并使用有限元軟件進(jìn)行結(jié)構(gòu)強(qiáng)度校驗(yàn)。為驗(yàn)證海底挖溝機(jī)的作業(yè)原理、工作流程以及作業(yè)過程機(jī)構(gòu)的動(dòng)作設(shè)計(jì)海底挖溝機(jī)陸上試驗(yàn)，使用安裝在管道導(dǎo)向架上的測(cè)力傳感器測(cè)量管道懸跨段提升力，驗(yàn)證管道受力分析。
[Abstract]:With the development of ocean energy resources, subsea oil pipeline has become an important way for oil resources to be transported from deep sea oil field to continent, and the safety problem of submarine oil pipeline is becoming more and more obvious. The main way to protect the submarine pipeline is to dig the trench, that is, after laying the submarine pipeline, dig out the trench of a certain depth along the pipeline and make the pipeline fall into it, so as to increase the stability of the submarine pipeline. As a kind of equipment with simple structure, high working efficiency and strong adaptability to working conditions, the submarine ploughing trench excavator has a broad application prospect. This paper comes from the project of "Research on hard soil trench digging Technology and equipment" of Offshore Petroleum Engineering Co., Ltd. The purpose of this project is to develop a submarine plough trench excavator with independent intellectual property rights. The plough body of the submarine plough type excavator is generally designed as a split structure of left and right symmetry which can be opened and closed. The plough, left and right, is located at the top of the submarine pipeline during the operation; the pipe manipulator at the front and the tail of the dredger grabs the pipe and elevates it to a specified height. Placed in the jacket, the left and right ploughs are closed, and the trenches are dug by the mother ship. The pipe manipulator and the jacket frame constitute the pipeline adjusting mechanism, which can grasp and release the pipe while the trencher is in place, and realize the guide of the excavator and the protection of the pipe during the operation. Only this part of the structure is in direct contact with the pipe during the whole operation of the trencher. The premise of the trench excavator is that it is not allowed to cause mechanical damage to the pipeline, so it is of great theoretical significance and practical value to study the stress state of the pipeline and its relationship with the pipeline adjusting device during the whole operation process. In this paper, the stress state of pipeline in the process of operation is theoretically analyzed, and the structure design of pipeline adjusting device of trencher is carried out on this basis, and the experiment is carried out to verify it. The main contents of this paper are as follows: according to the operation flow of submarine trench excavator, the design scheme of pipeline adjusting mechanism with lifting and guiding function is put forward. Aiming at the overhanging section of submarine pipeline produced by pipeline adjusting mechanism, the stress analysis model of submarine pipeline is established, and the finite element software is used to calculate the stress of submarine pipeline. Based on the analysis of soil resistance and soil deformation distribution at different soil surface contact points of suspended span section, the initial operating point of pipeline trencher was determined. According to the lifting force required to grab the submarine pipeline, the stress analysis and structural design of the pipeline adjustment mechanism are completed, and the structural strength is checked by using the finite element software. In order to verify the operation principle, work flow and operation mechanism of submarine trench excavator on land test, the force sensor installed on the guide frame of pipeline is used to measure the lifting force of the suspended span section of the pipeline. Verify the pipeline stress analysis.
【學(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TE973.8

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王立軍;余志峰;王鵬;;海底管道施工方法研究[J];管道技術(shù)與設(shè)備;2010年03期

2 董麗麗,徐慧,郭振邦;海底管道懸跨長(zhǎng)度的計(jì)算[J];中國(guó)海上油氣.工程;2003年06期

3 張國(guó)光;海底管道開溝技術(shù)的發(fā)展及其綜合評(píng)價(jià)[J];海洋通報(bào);1989年02期

4 張國(guó)光;;海底電纜安全及其施工埋設(shè)技術(shù)研究[J];海洋技術(shù);1992年01期

5 張國(guó)光;顧林聲;;海底管道開溝機(jī)械的技術(shù)經(jīng)濟(jì)性能評(píng)定與選型[J];海洋技術(shù);1993年03期

6 張國(guó)光;世界著名水下開溝機(jī)械設(shè)計(jì)施工公司與機(jī)型介紹[J];海洋技術(shù);1996年02期

7 邵偉才,夏賢行;海底管道埋設(shè)機(jī)及其應(yīng)用[J];浙江水利科技;2005年03期

8 盧瑾奉;灘海海底管道挖溝沉管技術(shù)[J];江蘇船舶;2004年05期

9 葉紹松,阮祥發(fā),趙燕;有限元法在結(jié)構(gòu)分析中的應(yīng)用[J];機(jī)械研究與應(yīng)用;2005年04期

10 宮含洋;王立權(quán);邢曉冬;弓海霞;;海底犁式挖溝機(jī)犁體建模及土壤裂解研究[J];機(jī)械工程學(xué)報(bào);2012年19期

相關(guān)博士學(xué)位論文 前1條

1 程棟棟;復(fù)雜條件下海底管線與土相互作用研究[D];天津大學(xué);2008年

本文編號(hào)：2180422