本文關(guān)鍵詞：輸油壓力管道沖蝕仿真與試驗(yàn)系統(tǒng)設(shè)計(jì)研究　出處：《中國計(jì)量學(xué)院》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 彎管 異徑管 沖蝕 CFD 協(xié)同作用

【摘要】：我國海上油氣資源儲(chǔ)量豐富,具有廣闊的開采前景。海上油氣資源在開采和管輸過程中,由于原油中裹挾固體顆粒,這些固體顆粒將導(dǎo)致管道壁面發(fā)生質(zhì)量流失,并可能導(dǎo)致管道發(fā)生破損,引發(fā)嚴(yán)重后果。本文對(duì)輸油壓力管道典型部件在不同溫度、流速、固體顆粒體積濃度下進(jìn)行CFD沖蝕仿真模擬。總結(jié)了彎管、漸縮管、漸擴(kuò)管和T型管沖蝕規(guī)律,并對(duì)仿真數(shù)據(jù)分析發(fā)現(xiàn),溫度、流速和固體顆粒體積濃度存在一定協(xié)同作用。通過查閱國內(nèi)外沖蝕相關(guān)文獻(xiàn)資料,闡述研究背景以及目前沖蝕研究的主流理論和模型。介紹國內(nèi)外沖蝕磨損研究進(jìn)展及相關(guān)成果,并介紹目前沖蝕磨損研究的兩種主流方法——CFD仿真和搭建沖蝕試驗(yàn)系統(tǒng)。根據(jù)仿真需要,選定了沖蝕模型并介紹了對(duì)應(yīng)的仿真工況設(shè)置情況。在對(duì)90°彎管進(jìn)行沖蝕仿真后,分析管道內(nèi)部流場及管道沖蝕分布。針對(duì)沖’蝕仿真數(shù)據(jù),從流速、溫度、固體顆粒體積濃度三因素,充分考慮三者之間的協(xié)同作用,討論當(dāng)三因素發(fā)生改變時(shí),彎管沖蝕率變化規(guī)律。同時(shí)指出,在(1～6)MPa范圍內(nèi),壓力對(duì)于管道沖蝕的影響較小。此外,對(duì)漸擴(kuò)管、漸縮管和T型管這三種異徑管進(jìn)行沖蝕仿真后,對(duì)仿真一數(shù)據(jù)從流速、溫度、固體顆粒體積濃度方面,對(duì)異徑管沖蝕規(guī)律進(jìn)行分析總結(jié)。指出各異徑管道沖蝕變化規(guī)律,以及漸縮管由于流速放大作用,入口流速閾值大小應(yīng)當(dāng)值得注意。出于驗(yàn)證仿真結(jié)果目的,設(shè)計(jì)了一套封閉式管道沖蝕循環(huán)試驗(yàn)系統(tǒng)。針對(duì)系統(tǒng)設(shè)計(jì)要求,對(duì)各配件進(jìn)行了相關(guān)選型工作。同時(shí),還針對(duì)試驗(yàn)系統(tǒng)的操作部分給出了詳細(xì)流程及注意事項(xiàng)。
[Abstract]:Offshore oil and gas resources in China is abundant, and has broad prospects. The exploitation of offshore oil and gas resources in the mining and transportation process, due to solid particles coerced in crude oil, the solid particles will cause the pipe wall quality loss, and may lead to pipeline breakage, causing serious consequences. The oil pressure pipeline for typical components at different temperature, flow rate, simulation CFD simulation volume concentration of solid particle erosion. Summed up the pipe, reducing pipe, Erosion Regularity of diffuser and T pipe, and the simulation data analysis found that there is a certain synergistic effect of temperature, concentration and velocity of solid particles. By reviewing the erosion related documents describes the research background and the current research on the erosion of mainstream theories and models. The research progress and results of erosion at home and abroad, and introduces the two main methods at present, the research on erosion CFD simulation and experimental test system. According to the simulation erosion, erosion model was selected and introduced the simulation conditions of the corresponding settings. In the simulation of a 90 degree bend erosion, analysis of internal flow field and pipeline erosion distribution. According to Chong 'erosion simulation data from the temperature, flow rate, solids volume concentration of three considering the factors, the synergistic effect between the three, discuss when change three factors, variation of elbow erosion rate. Also pointed out that in (1 ~ 6) MPa range, the pressure has little effect on pipeline erosion. In addition, the diffuser, tapered tube and T tube of the three different the diameter tube erosion simulation, the simulation data from the velocity, temperature, volume concentration of solid particles, the Erosion Regularity of different diameter pipe were analyzed and summarized. It is pointed out that different diameter pipeline erosion changes and reducing pipe flow velocity due to amplification, entrance flow The threshold speed should be noted. In order to verify the simulation results, the design of a closed pipeline erosion cycle test system. According to the design requirements of the system, the selection of the various parts. At the same time, also to test the operation of the system is part of the detailed process and the matters needing attention.

【學(xué)位授予單位】：中國計(jì)量學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE973

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