本文選題：壓縮機(jī)旋流分離器 + 數(shù)值模擬��； 參考：《華東理工大學(xué)》2015年碩士論文

【摘要】：空氣壓縮機(jī)的在工業(yè)中可用于來(lái)產(chǎn)生壓縮空氣和實(shí)現(xiàn)遠(yuǎn)距離輸運(yùn)氣體。近年來(lái)其使用日益廣泛,被廣泛使用在冶金、醫(yī)藥、機(jī)械、電力電子等各個(gè)行業(yè),使得它成為國(guó)民經(jīng)濟(jì)的中必不可少的關(guān)鍵設(shè)備之一。旋流分離器是噴油式空氣壓縮機(jī)的重要部件之一。其作用就是處理含有少量液霧的氣體,實(shí)現(xiàn)液體回收同時(shí)凈化氣相,保證氣體的純度,同時(shí)實(shí)現(xiàn)壓縮機(jī)油的二次回收利用。因此,旋流分離器性能直接關(guān)系到空氣壓縮機(jī)系統(tǒng)性能的高低。本文提出了的兩種結(jié)構(gòu)旋流分離器,找到適合此兩種旋流器合適網(wǎng)格劃分方法,根據(jù)模型特點(diǎn)選擇合適的湍流模型和多相流模型以及其它模擬需要用到參數(shù)的選擇與確定。完成Type A、Type B型兩種不同結(jié)構(gòu)旋流分離器氣相流場(chǎng)的模擬計(jì)算,分別考察對(duì)比其氣相流場(chǎng)的特性,分析其速度場(chǎng)、壓力場(chǎng)以及湍流結(jié)構(gòu)等特性。完成Type A、TypeB型兩種結(jié)構(gòu)旋流分離器兩相流場(chǎng)的數(shù)值模擬,研究不同直徑、不同入射位置顆粒的軌跡和分離效率,找出提高分離效率的措施,據(jù)此設(shè)計(jì)出新型的適合本項(xiàng)目的旋流分離器(Type C型)。同時(shí)設(shè)計(jì)相應(yīng)的工程試驗(yàn),通過(guò)實(shí)驗(yàn)得出三種不同結(jié)構(gòu)旋流分離器(Type A、Type B、Type C型)的效率,并與相應(yīng)數(shù)值模擬的結(jié)果進(jìn)行比較。得出,下部帶錐形的旋流器(Type C型)總體性能更高,其總體分離性能更高,壓降更低,并從理論上解釋了其原因。最終使得此分離器滿(mǎn)足了整個(gè)項(xiàng)目開(kāi)發(fā)的需要,取得了預(yù)期的經(jīng)濟(jì)效益。
[Abstract]:Air compressors can be used in industry to produce compressed air and to carry gas over long distances. In recent years, it has been widely used in metallurgy, medicine, machinery, power electronics and other industries, making it one of the essential key equipment in the national economy. Swirl separator is one of the most important parts of air compressor. Its function is to deal with the gas containing a small amount of liquid mist, to realize the recovery of liquid and purify the gas phase, to ensure the purity of the gas, and to realize the secondary recovery and utilization of compressor oil at the same time. Therefore, the performance of cyclone separator is directly related to the performance of air compressor system. In this paper, two kinds of structure cyclone separators are proposed, and the suitable meshing method is found for the two hydrocyclone. According to the characteristics of the model, the suitable turbulence model and multi-phase flow model, as well as other simulation needs to be used to select and determine the parameters. The gas phase flow field of two kinds of swirl separators with different structures is simulated and calculated. The characteristics of the gas flow field are investigated and compared, and the characteristics of velocity field, pressure field and turbulent structure are analyzed. The numerical simulation of two-phase flow field of Type Agna Type B cyclone separator is completed. The trajectory and separation efficiency of particles with different diameters and different incident positions are studied, and the measures to improve the separation efficiency are found out. A new type type C type cyclone separator suitable for this project is designed. At the same time, the corresponding engineering tests are designed, and the efficiency of three kinds of swirl separators with different structures are obtained and compared with the corresponding numerical simulation results. It is concluded that the lower cone hydrocyclone has higher overall performance, higher overall separation performance and lower pressure drop, and the reason is explained theoretically. Finally, the separator can meet the needs of the whole project development and obtain the expected economic benefits.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TH45

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本文編號(hào)：1812812