本文關(guān)鍵詞：液相管道流量與壓力對(duì)小孔泄漏速率的影響　出處：《石油學(xué)報(bào)》2016年02期 　論文類型：期刊論文

  更多相關(guān)文章： 液相管道 小孔泄漏 管道流量 壓力 泄漏速率

【摘要】：泄漏速率計(jì)算是計(jì)算泄漏量、評(píng)估泄漏風(fēng)險(xiǎn)的前提和基礎(chǔ),通過(guò)搭建液相管道小孔泄漏實(shí)驗(yàn)系統(tǒng),構(gòu)建不同泄漏場(chǎng)景,研究管道流量、壓力對(duì)管內(nèi)液體壓力及泄漏速率變化的影響規(guī)律,提出了小孔泄漏穩(wěn)定壓力計(jì)算方法,有效解決經(jīng)典計(jì)算公式中壓力求解問(wèn)題;通過(guò)對(duì)泄漏模塊仿真模擬,得到了泄漏孔口界面的速度分布情況,并研究了管道流量、壓力對(duì)速度分布的影響。實(shí)驗(yàn)和數(shù)值模擬結(jié)果表明:泄漏發(fā)生后,管道壓力下降明顯,泄漏穩(wěn)定壓力與初始?jí)毫Α⒐艿懒髁砍蕦?duì)數(shù)關(guān)系,初始?jí)毫�、管道流量越�?泄漏穩(wěn)定壓力越高,但相較于初始?jí)毫?泄漏穩(wěn)定壓力差值減小;管道流量越大,達(dá)到泄漏穩(wěn)定的時(shí)間越短,泄漏達(dá)到平衡越快;泄漏孔處,面對(duì)來(lái)流方向壁面附近速度較高,背向來(lái)流方向壁面附近有負(fù)壓、渦旋,且隨著管道流量、初始?jí)毫Φ脑黾?最大泄漏速度增加,但負(fù)壓范圍、程度減小。
[Abstract]:The calculation of leakage rate is the premise and foundation to calculate the leakage amount and evaluate the leakage risk. Through the establishment of a small hole leak experimental system of liquid phase pipeline, different leakage scenarios are constructed, and the pipeline flow rate is studied. The influence of pressure on the variation of liquid pressure and leakage rate in pipe is studied. A method for calculating the steady pressure of small hole leakage is put forward, which effectively solves the problem of pressure solution in the classical formula. Through the simulation of the leakage module, the velocity distribution of the leakage hole interface is obtained, and the influence of the pipeline flow rate and pressure on the velocity distribution is studied. The experimental and numerical simulation results show that: after the leakage occurs. Pipeline pressure decreases obviously, leakage stability pressure and initial pressure, pipeline flow is logarithmic relationship, initial pressure, pipeline flow, leakage stability pressure is higher, but compared with initial pressure. The leakage stability pressure difference is reduced; The larger the pipeline flow, the shorter the time to reach the leakage stability, and the faster the leakage reaches equilibrium. At the leak hole, the velocity near the wall is higher in the direction of the flow, and there is negative pressure and vortex near the wall in the direction of backflow. With the increase of the initial pressure and the flow rate of the pipeline, the maximum leakage velocity increases, but the negative pressure range. The degree is reduced.
【作者單位】： 中國(guó)石油大學(xué)海洋油氣裝備與安全技術(shù)研究中心;中國(guó)石油大學(xué)機(jī)電工程學(xué)院;中國(guó)石油化工股份有限公司管道儲(chǔ)運(yùn)分公司;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(15CX05018A) 青島市民生科技計(jì)劃重點(diǎn)支持項(xiàng)目(14-2-3-64-nsh)資助
【分類號(hào)】：TE88
【正文快照】： (1.Centre for Offshore Engineering and Safety Technology,China University of Petroleum,Shandong Qingdao 266580,China;2.College of Mechanical and Electronic Engineering,China University of Petroleum,Shandong Qingdao 266580,China;3.Sinopec Pipeline Storag

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