【正文】 的一項(xiàng)艱巨任務(wù)。在農(nóng)業(yè)方面，水泵及排灌站在抵御洪澇、干旱災(zāi)害，改善農(nóng)業(yè)生產(chǎn)條件等方面更是功不可沒。它是除電動(dòng)機(jī)以外使用范圍最廣泛的機(jī)械，幾乎沒有一個(gè)國(guó)民經(jīng)濟(jì)部門不使用水泵。 Strength calculation and check。 【關(guān)鍵詞】 離心泵、水力設(shè)計(jì)、強(qiáng)度校核、恒壓供水 Abstract This program is a design for the singlestage and singlesuction centrifugal pump, IS10065315 pump. This design pletes the structural design of the pump and hydraulic design of the impeller, pump body. Check the hydraulic design to prevent cavitaion. This design also carries on intensity and rigidity calculation of the impeller, casing,shaft, bearings, key, ring flange, coupling bolt and other parts. This disign applies bined constant pressure water supplying, automatic start and stop system. This design carries on variable frequecy water supplying, automatic start and stop system. This design carries on variale frequency water supply drawing, pipe arrangement drawing of variable frequeny water supply equipment, main circuit diagram and control chart. 【 Key words】 Centrifugal pump。 2 畢業(yè)設(shè)計(jì)（論文） IS125100250 型單級(jí)單吸離心泵的設(shè)計(jì) 3 目 錄 摘 要 ............................................................................................................................... 5 1前言 ................................................................................................................................ 6 .................................................................................... 7 ................................................................................................ 7 2葉輪的設(shè)計(jì) .................................................................................................................... 7 ........................................................ 7 確定泵進(jìn)出口直徑 ................................................................................ 8 汽蝕計(jì)算 ................................................................................................ 8 比轉(zhuǎn)速的計(jì)算 ........................................................................................ 9 確定效率 ................................................................................................ 9 確定功率 .............................................................................................. 10 初步確定葉輪的主要尺寸 .................................................................. 10 精算葉輪外徑 ...................................................................................... 12 .............................................................. 14 葉輪出口速度 ...................................................................................... 14 流道中線 檢查 ...................................................................................... 14 中間流線的劃分 .................................................................................. 15 葉片進(jìn)口邊的確定 .............................................................................. 16 葉輪進(jìn)口速度 ...................................................................................... 17 編程計(jì)算 A、 B、 C 三點(diǎn)的葉片安放角 .............................................. 20 .......................................................................................................... 21 繪型原理 .............................................................................................. 21 繪型步驟 .............................................................................................. 22 繪制葉片進(jìn)出口三角形 ...................................................................... 24 3汽蝕驗(yàn)算 ...................................................................................................................... 25 .......................................................................... 25 4壓水室的計(jì)算及繪型 .................................................................................................. 26 ...................................................................................... 26 .................................................................................................. 28 5離心泵結(jié)構(gòu)設(shè)計(jì)及部分零件的強(qiáng)度校核 .................................................................. 29 .............................................................................................. 29 葉輪 ...................................................................................................... 30 泵體 ...................................................................................................... 30 泵軸 ...................................................................................................... 30 軸承 ...................................................................................................... 30 密封環(huán) .................................................................................................. 30 填料函 .................................................................................................. 30 .......................................................................... 31 最小軸徑的計(jì)算 .................................................................................. 31 4 鍵的計(jì)算及強(qiáng)度校核 .......................................................................... 31 軸向力的計(jì)算 ...................................................................................... 32 軸承壽命的計(jì)算 .................................................................................. 34 填料的計(jì)算 .......................................................................................... 35 結(jié)論 ................................................................................................................................. 36 總結(jié)與體會(huì) ..................................................................................................................... 37 謝辭 ................................................................................................................................. 37 參考文獻(xiàn) ............................