本文選題：液氣比 + 混合潤(rùn)滑　； 參考：《潤(rùn)滑與密封》2016年04期

【摘要】：針對(duì)小液滴均勻分布在氣相中的兩相潤(rùn)滑狀態(tài)下的密封工況,建立氣液混合物理模型,推導(dǎo)氣液兩相混合流體的等效黏度,建立氣液混合潤(rùn)滑動(dòng)壓密封端面間的氣液混合潤(rùn)滑Reynolds方程。利用MATLAB軟件編寫(xiě)有限元程序求解氣液混合潤(rùn)滑Reynolds方程,得到動(dòng)壓密封端面間氣液混合流體的壓力分布及密封性能參數(shù),并分析在操作工況一定時(shí),液氣比對(duì)密封性能的影響。分析結(jié)果表明:在相同的膜厚下,液滴增強(qiáng)了端面流體動(dòng)壓效應(yīng);動(dòng)壓密封在運(yùn)轉(zhuǎn)過(guò)程中,端面密封間隙、摩擦功耗和質(zhì)量泄漏率隨液氣比的增加而增加,體積泄漏率隨液氣比的增加而減少,而剛度隨液氣比的增加先增加后降低,存在最大值。
[Abstract]:The physical model of gas-liquid mixing is established for the condition of sealing under the condition of homogeneous distribution of small droplets in gas phase under the condition of two-phase lubrication, and the equivalent viscosity of gas-liquid two-phase mixed fluid is deduced. The Reynolds equation of gas-liquid mixed lubrication between the end surfaces of hydrodynamic seal was established. The finite element software MATLAB is used to solve the Reynolds equation of gas-liquid mixed lubrication. The pressure distribution and sealing performance parameters of the gas-liquid mixed fluid between the end surfaces of the dynamic pressure seal are obtained. The effect of liquid-gas ratio on the sealing performance is analyzed when the operating conditions are fixed. The results show that under the same film thickness, the droplet enhances the hydrodynamic pressure effect on the end face, and the gap, friction power consumption and mass leakage rate increase with the increase of the liquid-gas ratio during the operation of the hydrodynamic seal. The volume leakage rate decreases with the increase of the liquid-gas ratio, while the stiffness increases first and then decreases with the increase of the liquid-gas ratio, and there is a maximum value.
【作者單位】： 北京化工大學(xué)機(jī)電工程學(xué)院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃項(xiàng)目(973計(jì)劃)(2012CB026000)
【分類(lèi)號(hào)】：TH136

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 杜謙;馬春元;董勇;吳少華;秦裕琨;;液氣比對(duì)石灰石-石膏濕法煙氣脫硫過(guò)程的影響[J];動(dòng)力工程;2007年03期

2 孫全海;;空分設(shè)備精餾塔各段液氣比的影響因素分析[J];深冷技術(shù);2014年03期

3 楊世t，

本文編號(hào)：1777471