搅拌功率计算-150818

1、搅拌轴校核表：（浆叶数为2或3，非阶梯轴）说明搅拌轴参数强度较核（316、304）=330 Kgf/cm2刚度较核0=0.7(有底轴承)0=0.35(无底轴承)搅拌系统参数(其中轴密度为316密度）转数较核 (实际转速应小于临界转速)质量(中间变量)规格功率N(Kw)转速n(rpm)轴径Dj(mm)()0(0)罐体直径浆叶数量(2,3)轴长轴密度(*103Kg/m3)物料密度(*103Kg/m3)两轴承间距临界转速(r/min)县臂轴有效质量(Kg)当量质量(Kg)12455124.20.321800312007.891.051001383.025.56.232460287.10.681500

2、21500813501232.238.29.6310050119.10.3415002150081350887.726.56.77200202170.215.341200324007.89135090.66.71.60200700.00.001200324007.891350843.082.120.20200700.00.001200324007.891350843.082.120.20200700.00.001200324007.891350843.082.120.20200700.00.001200324007.891350843.082.120.20200700.00.001200324

3、007.891350843.082.120.20200700.00.001200324007.891350843.082.120.20200700.00.001200324007.891350843.082.120.20200700.00.001200324007.891350843.082.120.23000L1.12448205.60.611800312007.891.051001070.119.44.72000L0.452445102.10.321500310007.891.051001571.414.23.51000L0.3244096.90.341200310007.891.0510

4、01593.911.22.7搅拌器质量搅拌器有效质量当量总质量(轴+搅拌器)42.151.864.926.032.152.125.431.548.412.815.531.215.117.854.215.117.854.215.117.854.215.117.854.215.117.854.215.117.854.215.117.854.215.117.854.241.751.362.925.130.738.313.716.623.3搅拌轴校核表：（浆叶数为2或3，非阶梯轴）质量(中间变量)搅拌功率计算：圆盘涡轮搅拌器，标准叶轮适用P=M*n/9550M=9550P/n序号发酵罐规格（标准比例）

5、经验功率（以前项目所用功率）（KW)罐体直径（m)搅拌轴转数n（rpm)搅拌轴转数n（r/s)搅拌器数量电动机计算功率PM(KW)搅拌轴轴封处的摩擦损耗功率Pm(KW)每层搅拌器的设计功率扭矩M(N.m)搅拌器直径Dj(m)轴封处搅拌轴直径 d0搅拌机传动装置各零部件的传动效率1搅拌功率Ps(kW)功率准数Po多层搅拌器总功率准数系数Pon/Po多层搅拌器总功率准数Poc功率准数校正总系数k液体密度（kg/m3)液体粘度Pa.s(Nsm-2)搅拌液体雷诺数Re115L0.40.2100016.6710.1150.0861.10.067250.980.02750.750.90110000.001

6、74074.1130L0.550.2580013.3310.1320.0861.60.083250.980.04450.750.91410000.00192592.6250L0.550.3100016.6710.3060.0862.90.100250.980.21450.750.92510000.001166667250L0.550.380013.3310.1990.0862.40.100250.980.11050.750.92510000.0011333333100L1.50.554006.6720.6210.10714.80.183300.980.50250.78.50.96210000.

7、0012240744200L2.20.570011.6721.8940.19725.80.167500.981.65950.78.50.95610000.0013240745300L2.20.55100.1720.2010.197191.80.183500.980.00050.78.50.96210000.0015601.855300L2.20.5560010.0021.9290.19730.70.183500.981.69350.78.50.96210000.0013361116500L30.83005.0020.6150.15119.60.267400.980.45210.71.70.98

8、616000.034167326500L30.654707.8322.1360.19743.40.217500.981.89750.78.50.97210000.0013677316800L30.83505.8322.4890.19767.90.267500.982.24250.78.50.98610000.00141481571000L40.8560010.00322.4500.320357.30.283750.9821.68150.7120.98910000.00180277871500L7.51.003505.8327.4120.320202.20.333750.986.94350.78

9、.51.00010000.00164814885000L151.42504.17214.5200.320554.70.467750.9813.91050.78.51.02210000.001907407910000L221.8001853.08221.0010.4521084.10.6001000.9820.12950.78.51.03910000.0011110000101500L7.50.804006.6735.1490.320122.90.267750.984.72650.7120.98610000.001474074*当计算搅拌器在标准几何参数条件下时，其功率准数校正总系数 k=1；*

10、当计算搅拌器在非标准几何参数条件下时，各种搅拌器功率准数按其标准几何参数关系下的功率准数，再乘上各自的功率校正总系数 k。搅拌器形式标准几何参数符 号 说 明桨式搅拌器Dj/Di=0.66Dj：搅拌器直径b/Dj=0.1Di：搅拌设备内径 mZj=2b：搅拌器桨叶宽度Zj：搅拌器桨叶数量圆盘涡轮式Dj=Di/3；Di=1000d=0.6Djd： 圆盘直径d=0.02Djd：圆盘厚度Zj=6；=Dj/50： 桨叶厚度b/Dj=0.2；L=Dj/4L： 桨叶长度Zb=4Zb： 挡板数量Wb=Di/12Wb：挡板宽度Sb=Di/60Sb：挡板与容器内壁间距S/Di=0.66S：搅拌器潜液深度C=Di

11、/3C：搅拌器距容器底距离Hl=DiHl：容器内液柱高度碟形和椭圆形容器底形状直叶开启涡轮式Dj=Di/3；Di=1000Zj=6b/Dj=0.2Zb=4Wb=Di/12Sb=Di/60S/Di=0.66C=Di/3Hl=Di碟形和椭圆形斜叶开启涡轮式推进式Dj=Di/3Zj=3Zb=4；Sb=0Wb=Di/10S/Di=0.66C=Di/3Hl=DiPt=Dj；1.4Dj；2DjPt：搅拌器桨叶螺距多层搅拌器非标准几何参数时的校正总系数 k附 加 计 算 公 式k=k1*k2k1=Hl/Dik22 (用于1个搅拌器)k22.5 (用于2个以上搅拌器)k=kT*kB(kV)*ke*kC*kS*

12、kZ*kb*kL*kkT:搅拌容器直径校正系数kT=Di0.065kV:涡流校正系数（无挡板且Re300时考虑）kV=(g/n2Dj)(1-logRe)/40式中g=9.81m/s;n搅拌转速r/skB:挡板校正系数查图表ke:搅拌容器底形状校正系数平底：ke=1.07;碟形和椭圆形:ke=1.0kC:搅拌器与容器底的距离校正系数查图表当C/Di=0.33，0.14Dj/Di0.7范围内，功率准数无变化kS:搅拌器潜液深度校正系数查图表kZ:搅拌器桨叶数量校正系数Zj=4时kz=0.72；Zj=8时kz=1.25kb:桨叶宽度校正系数6叶:kb=(5b/Dj)1.2；4叶:kb=(5b/Dj)

13、1.45kL:桨叶长度校正系数当L/Dj=0.5时(桨叶延伸至轮毂处)：kL=1.05k:桨叶厚度和圆盘厚度校正系数k=（50/Dj）-0.2(适用于0.0108/Dj0.0341)*当任一项为标准时其相应校正系数为1k=ke*kD*kI*kV*kC*kwke:搅拌容器底形状校正系数平底：ke=1.11;碟形和椭圆形:ke=1.0kD：搅拌器直径与搅拌设备直径比（dj/Di）和挡板参数（ZbWb/Di）校正系数查图kI：非标准内件校正系数a、螺旋盘管 b、角钢 c、单根钢管kV：非标准容器校正系数（标准为立式圆筒形）a、卧式圆筒形 b、方形搅拌容器kc：搅拌器与容器底的距离校正系数查图表kw：

14、搅拌器桨叶数Zj和桨叶宽度(b/Dj)校正系数 湍 流 区 ； 层流区（1Re30）在0.01/Dj0.0332范围内，功率准数变化300时考虑）kB:挡板校正系数查图表1100L2.20.880.40.9422112200L210.50.9559113300L2.141.1750.550.9619113500L2.151.40.650.97241141000L2.1181.80.850.98951155000L2.213.11.41.022111610000L2.203.961.81.03891171500L3.7530.80.985611桨叶宽度b=Dj/5桨叶数量Zj=6桨叶长度L=Dj

15、/4桨叶厚度=Dj/50挡板数量Zb=453.3333333366.666666675.333333333ke:搅拌容器底形状校正系数kc:搅拌器与容器底的距离校正系数查图表ks:搅拌器潜液深度校正系数查图表kz:搅拌器桨叶数量校正系数kb:桨叶宽度校正系数kL:桨叶长度校正系数111111111111111111111111111111111111111111111111*当某一项为标准时其相应校正系数为1挡板宽度Wb=Di/12挡板与容器内壁间距Sb=Di/60搅拌器潜液深度S=2/3Di搅拌器距容器底距离C=Di/3容器内液柱高度Hl66.66666667k:桨叶厚度和圆盘厚度校正系数k

16、10.9421800410.95594531810.96188593610.97238750210.9894918711.02211161211.03894537210.98560035*当某一项为标准时其相应校正系数为1推进式搅拌器和容器的标准参数标准推进式搅拌器和容器搅拌功率准数：1、有挡板,雷诺数Re104：螺距=Dj P0=0.4；150Re104时,0.4PO6000：螺距=1.4Dj P0=0.6；200Re6000时,0.6PO500：螺距=2Dj P0=1；4、无挡板,雷诺数Re4000：按P0=0.3计算（3*104104：螺距=Dj P0=0.4；150Re104时,0.4PO6000：