本文選題：沖壓泵　切入點：導葉　出處：《浙江工業(yè)大學》2011年碩士論文

【摘要】：離心泵是一種通用流體機械,廣泛應用在工業(yè)生產(chǎn)和社會生活的各個領域。近年來,隨著沖壓離心泵的問世及發(fā)展,沖壓泵已逐步取代了鑄造泵。沖壓泵采用沖壓成型制造技術,不僅避免了鑄造工藝的缺點,而且水力性能也優(yōu)于傳統(tǒng)鑄造泵。如今,沖壓泵已廣泛應用于石油化工、油脂、食品、飲料、釀酒、醫(yī)藥衛(wèi)生、電力、紡織、印染、環(huán)保、水處理、表面處理、電子機械、樓宇供水等行業(yè)。導葉是沖壓泵級間重要的固定過流部件,它兼?zhèn)湮液蛪核业碾p重作用,不僅可以導流,還可以回收能量。本文采用MDP40-8-8沖壓立式多級離心泵作為研究對象,采用CFD數(shù)值模擬方法,對其中的兩級進行數(shù)值模擬,研究了導葉出口與葉輪進口的匹配關系,并選擇了其中的一個方案進行了試驗驗證。本文的主要研究工作包括： (1)簡要介紹和分析了導葉結構設計方法,查閱大量書籍及文獻,整理并總結出了導葉出口直徑、導葉進出口安放角以及導葉葉片數(shù)的相關計算公式,為文中改變導葉設計參數(shù)的方案作理論鋪墊。 (2)簡要介紹了Pro/ENGINEER三維制圖軟件,并應用Pro/E軟件繪制了不同設計參數(shù)下導葉模型,再將不同導葉與其他過流部件分別組裝組件,導入Gambit中采用非結構化網(wǎng)格進行分塊網(wǎng)格劃分,再將網(wǎng)格文件用Fluent軟件寫入后進行數(shù)值模擬計算,最后用CFD數(shù)據(jù)后處理技術對計算結果進行分析比較,得出了導葉與葉輪中流場的分布情況和內(nèi)部流動特征。 (3)將各組數(shù)值模擬的數(shù)據(jù)進行分析,得出在改變導葉參數(shù)情況下,葉輪中流態(tài)的優(yōu)劣情況,模擬結果表明,在改變導葉出口直徑、導葉出口安放角、導葉葉片數(shù)以及導葉出口和葉輪進口距離等設計參數(shù)時,葉輪中的流態(tài)均受到了影響。 (4)選擇數(shù)值模擬研究的其中一組方案進行試驗研究,對方案中不同的導葉尺寸制造出樣機,整理并分析試驗數(shù)據(jù),試驗結果與數(shù)值模擬結果具有較高的相似性,證明了數(shù)值模擬的正確性和可靠性。
[Abstract]:Centrifugal pump is a kind of universal fluid machinery, which is widely used in various fields of industrial production and social life.In recent years, with the advent and development of centrifugal pump, stamping pump has gradually replaced the casting pump.The punching pump not only avoids the shortcoming of casting process, but also has better hydraulic performance than traditional casting pump.Nowadays, punching pump has been widely used in petrochemical, oil, food, beverage, wine, medicine and hygiene, electric power, textile, printing and dyeing, environmental protection, water treatment, surface treatment, electronic machinery, building water supply and so on.The guide vane is an important fixed flow unit between the stages of the punching pump. It has the dual functions of the suction chamber and the pressure chamber, which can not only guide the flow, but also recover the energy.In this paper, MDP40-8-8 stamping vertical multistage centrifugal pump is used as the research object, and CFD numerical simulation method is used to simulate the two stages of the pump, and the matching relationship between the guide vane outlet and the impeller inlet is studied.One of the schemes is selected for experimental verification.The main research work of this paper includes:This paper briefly introduces and analyzes the design method of guide vane structure, looks up a large number of books and documents, arranges and summarizes the relevant formulas for calculating the outlet diameter of guide vane, the inlet and outlet angle of guide vane, and the number of guide vane pieces.This paper provides a theoretical basis for changing the design parameters of guide vane.In this paper, the Pro/ENGINEER 3D drawing software is introduced briefly, and the guide vane model with different design parameters is drawn by using Pro/E software. Then the different guide vane and other overcurrent components are assembled separately, and the unstructured grid is used to divide the block mesh into Gambit.Then the grid file is written into Fluent software for numerical simulation. Finally, the results are analyzed and compared by using CFD data post-processing technology, and the distribution and internal flow characteristics of the flow field in the guide vane and impeller are obtained.3) by analyzing the data of each group of numerical simulation, the flow state in the impeller can be obtained by changing the parameters of the guide vane. The simulation results show that when the diameter of the outlet of the guide vane is changed, the angle of placement of the outlet of the guide vane is changed.The flow pattern in the impeller is affected by the design parameters such as the number of the guide vane and the distance between the outlet of the guide vane and the inlet of the impeller.4) A group of schemes of numerical simulation is selected for experimental study. A prototype is made for different guide vane sizes in the scheme, and the test data are sorted out and analyzed. The experimental results are similar to those of numerical simulation.The correctness and reliability of the numerical simulation are proved.
【學位授予單位】：浙江工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH311

【參考文獻】

相關期刊論文 前10條

1 鄭義;;QG400/300前置泵低負荷軸向竄動原因分析與處理[J];重慶電力高等�？茖W校學報;2010年01期

2 張學靜;李德明;;多級導葉式離心泵導葉內(nèi)部CFD計算分析[J];甘肅科學學報;2006年03期

3 王宏偉;于冠東;;軸向力的動態(tài)測量[J];機械管理開發(fā);2007年05期

4 施衛(wèi)東;張啟華;陸偉剛;;新型井泵水力設計及內(nèi)部流動的數(shù)值模擬[J];江蘇大學學報(自然科學版);2006年06期

5 李棟,孫剛,喬志德;網(wǎng)格嵌套法在復雜流場計算中的應用[J];空氣動力學學報;1998年02期

6 辛春宏;馬偉;楊強;;關于沖壓焊接多級離心泵水力設計的研究[J];臨沂師范學院學報;2008年03期

7 虞之日;節(jié)段式多級泵導葉的環(huán)形空間及其設計[J];流體機械;1998年12期

8 錢家祥　,童志成　,陳文正;沖壓泵的特點及其應用[J];流體機械;1999年08期

9 陳魚;費振桃;蔡永雄;楊任;李文廣;;輸送清水時口環(huán)間隙對離心油泵性能的影響[J];流體機械;2006年01期

10 周天孝,白文;CFD多塊網(wǎng)格生成新進展[J];力學進展;1999年03期

，

本文編號：1691886