螺旋軸流式混輸泵壓縮級(jí)設(shè)計(jì)及內(nèi)流場(chǎng)模擬
本文選題:螺旋軸流式混輸泵 切入點(diǎn):增壓?jiǎn)卧?/strong> 出處:《蘭州理工大學(xué)》2011年碩士論文
【摘要】:本文介紹了油氣混輸泵在油田中的應(yīng)用及國(guó)內(nèi)外該領(lǐng)域的研究狀況與發(fā)展趨勢(shì)。綜合軸流泵與壓縮機(jī)的理論,完成了螺旋軸流式混輸泵動(dòng)、靜葉輪水力設(shè)計(jì)工作。采用三維造型軟件UG建立油氣混輸泵增壓?jiǎn)卧P,利用ICEM對(duì)計(jì)算區(qū)域進(jìn)行離散化,運(yùn)用FLUENT多相流模塊對(duì)模型進(jìn)行數(shù)值模擬,并使用Tecplot和Origin處理模擬結(jié)果,得到壓縮級(jí)內(nèi)部壓力場(chǎng)、速度場(chǎng)及相態(tài)分布情況,作出單壓縮級(jí)性能曲線。通過(guò)對(duì)流速、壓力、總壓的分布狀況分析,掌握轉(zhuǎn)輪內(nèi)部流動(dòng)情況,在此基礎(chǔ)上,對(duì)設(shè)計(jì)進(jìn)行改進(jìn)。本次設(shè)計(jì)減小動(dòng)葉輪緣翼型安放角,,加大動(dòng)葉弦長(zhǎng),靜葉輪采用了NACA4412翼型,有效減小了靜葉流道內(nèi)旋渦和相態(tài)分離的發(fā)生,提高了泵的效率。數(shù)值計(jì)算表明,混輸泵的高效區(qū)變寬,能夠較好適應(yīng)更高含氣率工作環(huán)境,整機(jī)性能明顯改善,為今后的設(shè)計(jì)提供有益的參考。
[Abstract]:This paper introduces the application of oil and gas mixed transportation pump in oil field and the research status and development trend in this field at home and abroad. By integrating the theory of axial flow pump and compressor, the helical axial flow mixing pump is completed. Hydraulic design of static impeller. The model of pressurized unit of oil and gas mixed transportation pump is established by using 3D modeling software UG, the calculation area is discretized by ICEM, and the model is numerically simulated by FLUENT multiphase flow module. Using Tecplot and Origin to deal with the simulation results, the internal pressure field, velocity field and phase distribution of the compression stage are obtained, and the performance curves of the single compression stage are obtained. Through the analysis of the distribution of velocity, pressure and total pressure, the internal flow situation of the runner is grasped. On this basis, the design is improved. The design reduces the angle of the flange of the moving impeller, increases the length of the blade string, and adopts the NACA4412 airfoil for the stator impeller, which effectively reduces the occurrence of vortex and phase separation in the flow channel of the stator blade. The efficiency of the pump is improved. The numerical calculation shows that the high efficiency zone of the mixed pump is widened, which can better adapt to the working environment with higher gas content, and the performance of the whole machine is obviously improved, which provides a useful reference for the design in the future.
【學(xué)位授予單位】:蘭州理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2011
【分類號(hào)】:TH312
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