本文選題：巖屑甩干機(jī)　切入點：流場　出處：《西南石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：巖屑甩干機(jī)作為新型廢棄物處理設(shè)備,對廢棄物的處理、回收及利用顯現(xiàn)出了極大的優(yōu)勢,但在實際工況中鉆井液物性、上級固控設(shè)備分離粒度、入料濃度等眾多因素影響著巖屑甩干機(jī)的分離效率和效果。為了分析不同因素帶來的影響,本文主要從工況性質(zhì)、甩干機(jī)操作參數(shù)和結(jié)構(gòu)參數(shù)、物料特性等幾方面出發(fā)對巖屑甩干機(jī)進(jìn)行流場分析以及針對關(guān)鍵部件進(jìn)行靜、動力學(xué)分析。通過理論研究、數(shù)值仿真、參數(shù)優(yōu)選等方法優(yōu)化轉(zhuǎn)子結(jié)構(gòu)參數(shù)和操作參數(shù),并深入研究了篩籃的振動特性、應(yīng)力分布及變形情況,對巖屑甩干機(jī)的結(jié)構(gòu)改進(jìn)具有重要的工程意義。具體研究工作有以下幾方面:(1)充分調(diào)研巖屑甩干機(jī)的相關(guān)資料及現(xiàn)場應(yīng)用情況,了解其工作原理、工作過程,了解國內(nèi)外的應(yīng)用現(xiàn)狀、存在問題及發(fā)展趨勢,確定了其研究的必要性。(2)研究巖屑甩干機(jī)的分離理論,對巖屑甩干機(jī)的篩網(wǎng)過濾及分離特性進(jìn)行理論研究,并基于離心過濾基本方程,分析對其分離效果及效率的影響因素。結(jié)果表明:過濾介質(zhì)和濾餅共同影響巖屑甩干機(jī)的分離效率和效果,壓降、流體粘度、過濾時間、過濾介質(zhì)材料以及顆粒粒徑是影響排渣含濕量的主要因素。(3)研究流體動力學(xué)理論及流場數(shù)值模擬方法在巖屑甩干機(jī)上的運用。運用虛擬樣機(jī)技術(shù)建立巖屑甩干機(jī)虛擬樣機(jī),并運用計算流體力學(xué)軟件Fluent模擬巖屑甩干機(jī)內(nèi)部流場特性,初步探討流體的速度場和壓力場等規(guī)律,以及各參數(shù)對分離效率的影響。結(jié)果顯示:在轉(zhuǎn)速為825r/min、差轉(zhuǎn)速為25r/min、轉(zhuǎn)子半錐角為α= 25°、入口速度為5m/s情況下工作狀態(tài)最好,且當(dāng)入料密度超過2600Kg/m3、固相含量超過60%時巖屑甩干機(jī)機(jī)械性能明顯下降。(4)對篩籃進(jìn)行了靜力學(xué)理論分析,計算了離心錐和篩網(wǎng)的激振頻率和固有頻率,運用單向耦合理論并配合Ansys workbench相應(yīng)的求解工具完成有、無加強(qiáng)篩籠篩籃的應(yīng)力、變形及模態(tài)分析,并根據(jù)實際工況分析其轉(zhuǎn)子在自由狀態(tài)和實際約束狀態(tài)下的動力學(xué)特性。結(jié)果顯示:有加強(qiáng)篩籠的篩網(wǎng)內(nèi)部最大應(yīng)力遠(yuǎn)低于篩籃許用應(yīng)力,在實際工況下變形小,壽命長;通過坎貝爾曲線圖求解了固有頻率下的臨界轉(zhuǎn)速,與實際參數(shù)做對比,遠(yuǎn)小于共振條件,不會出現(xiàn)共振破壞。(5)通過以上研究,進(jìn)行篩籃整體參數(shù)優(yōu)選,并進(jìn)行仿真驗證。結(jié)果顯示:優(yōu)化后的篩籃強(qiáng)度提高了 39.38%,剛度提高了 40.63%,驗證了優(yōu)選參數(shù)的正確性。
[Abstract]:As a new type of waste treatment equipment, the cuttings flick dryer has shown great advantages in the treatment, recovery and utilization of waste, but in the actual working conditions, the physical properties of drilling fluid and the separation granularity of the superior solid control equipment are obtained. The separation efficiency and effect of cuttings dryer are affected by many factors, such as feed concentration. In order to analyze the influence of different factors, this paper mainly analyzes the operating parameters and structural parameters of the drying machine. The flow field analysis of cuttings drying machine and static and dynamic analysis of key components are carried out. The rotor structure parameters and operation parameters are optimized by theoretical research, numerical simulation, parameter optimization and so on. The vibration characteristics, stress distribution and deformation of the screen basket are also studied. It is of great engineering significance to improve the structure of the cuttings dryer. The specific research work includes the following aspects: 1) fully investigate the relevant data and field application of the cuttings dryer, and understand its working principle and working process. It is necessary to study the separation theory of cuttings drying machine, and to study the screening screen filtration and separation characteristics of cuttings drying machine. Based on the basic equation of centrifugal filtration, the factors influencing the separation efficiency and efficiency are analyzed. The results show that the separation efficiency and effect, pressure drop, fluid viscosity, filtration time of the cuttings flick dryer are affected by the filter medium and the filter cake. The application of fluid dynamics theory and flow field numerical simulation method in cuttings drying machine is studied. Virtual prototype of cuttings drying machine is established by using virtual prototyping technology. Using the computational fluid dynamics software Fluent to simulate the characteristics of the flow field in the cuttings dryer, the velocity field and pressure field of the fluid are preliminarily discussed. The results show that when the speed is 825 r / min, the difference speed is 25 r / min, the rotor half cone angle is 偽 = 25 擄, and the inlet velocity is 5 m / s, the working condition is the best. And when the density of feed is more than 2600kg / m ~ 3 and the solid content is more than 60, the mechanical properties of cuttings drying machine are obviously decreased. (4) the static theory analysis of screen basket is carried out, and the exciting frequency and natural frequency of centrifugal cone and screen screen are calculated. Using unidirectional coupling theory and corresponding solving tools of Ansys workbench, the stress, deformation and modal analysis of sieve basket without reinforcement are completed. According to the actual working conditions, the dynamic characteristics of the rotor in the free state and the actual constrained state are analyzed. The results show that the maximum stress inside the screen screen with strengthened cage is much lower than the allowable stress of the screen basket, and the deformation is small and the life is long in the actual working condition. The critical rotational speed at natural frequency is solved by Campbell curve. Compared with the actual parameters, it is far less than the resonance condition, and there will be no resonance damage. (5) through the above research, the overall parameters of the screen basket are optimized. The simulation results show that the strength of the optimized screen basket is increased by 39.38 and the stiffness of the screen basket is increased by 40.63, which verifies the correctness of the optimized selection parameters.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE9

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 江樵;;快速鉆進(jìn)及復(fù)雜條件下的巖屑鑒定[J];鉆采工藝;2010年S1期

2 ;巖屑的去除[J];化工裝備技術(shù);1993年01期

3 霍洪俊;王瑞和;倪紅堅;武程皓;宋維強(qiáng);李木坤;;二氧化碳分散巖屑機(jī)制的模擬試驗研究[J];中國石油大學(xué)學(xué)報(自然科學(xué)版);2014年02期

4 王懷;;淺談用異常巖屑法預(yù)防井內(nèi)事故[J];中州煤炭;2007年01期

5 鮑云杰;劉金玲;;基于機(jī)器視覺的巖屑自動揀選系統(tǒng)設(shè)計[J];電子測量技術(shù);2014年01期

6 馬林虎;;鉆斜井中防止巖屑沉積的研究[J];鉆采工藝;1992年01期

7 劉正玉，，劉希圣;直井巖屑運移方程的差分解法[J];石油大學(xué)學(xué)報(自然科學(xué)版);1995年03期

8 宰艷玲;聶軍;呂合軍;;巖屑后處理裝置研制及主要參數(shù)設(shè)計[J];石油礦場機(jī)械;2011年07期

9 孫維林;巖屑上升速度的計算[J];石油鉆采工藝;1984年05期

10 劉志剛,馮杏芬,高偉鵬,林莉,張峰,柳金鐘;巖屑圖像分析新技術(shù)簡介[J];錄井工程;2004年04期

相關(guān)會議論文 前2條

1 楊雷;;鉆井巖屑顆粒特征研究[A];第十五屆中國科協(xié)年會第16分會場：現(xiàn)代顆粒測試技術(shù)的發(fā)展及應(yīng)用研討會論文集[C];2013年

2 胡小剛;康濤;柴占文;劉維彬;許錦華;;國外鉆井巖屑處理技術(shù)與國內(nèi)應(yīng)用研制分析[A];2009年石油裝備學(xué)術(shù)研討會論文專輯[C];2009年

相關(guān)重要報紙文章 前2條

1 記者 谷學(xué)濤 通訊員 鄧斌;川慶鉆探研發(fā)無基坑巖屑處理系統(tǒng)[N];中國石油報;2013年

2 本報記者 余建斌;事故本可避免 為何還是發(fā)生[N];人民日報;2011年

相關(guān)碩士學(xué)位論文 前8條

1 李二帥;利用巖屑檢測地層巖石力學(xué)參數(shù)的方法與實驗研究[D];西南石油大學(xué);2016年

2 閻治全;巖屑多焦成像及巖性分類系統(tǒng)研究[D];天津大學(xué);2016年

3 成奇云;巖屑甩干機(jī)高濃度流場分析及篩籃結(jié)構(gòu)參數(shù)優(yōu)化[D];西南石油大學(xué);2017年

4 楊曉明;基于灰度統(tǒng)計特征的巖屑巖性最優(yōu)描述方法研究[D];中國海洋大學(xué);2007年

5 田野;基于激光誘導(dǎo)擊穿光譜技術(shù)的巖屑識別方法研究[D];中國海洋大學(xué);2013年

6 韓昱晨;鉆井巖屑自動取樣系統(tǒng)的研究[D];西安石油大學(xué);2017年

7 王東強(qiáng);基于多種特征量提取的巖屑巖性最優(yōu)識別方案研究[D];中國海洋大學(xué);2008年

8 趙如意;金剛石繩鋸加工花崗石巖屑形成機(jī)理及其對串珠磨損影響的研究[D];華僑大學(xué);2014年

本文編號：1591559