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    • 3. 发明申请
    • METHODS OF MIXING IMPELLER SENSING
    • 混合叶轮传感方法
    • WO2017129205A1
    • 2017-08-03
    • PCT/EP2016/002003
    • 2016-11-28
    • SARTORIUS STEDIM BIOTECH GMBHSARTORIUS STEDIM NORTH AMERICA INC.SARTORIUS STEDIM SWITZERLAND AG
    • WEST, Sharon D.OSCHWALD, MartinCUTTING, Jonathan E.BÖTTCHER, Lars
    • G01N11/14B01F7/18C12M1/02
    • B01F15/00285B01F3/1221B01F13/0818B01F15/00201B01F15/00233B01F15/00246B01F15/00389B01F2215/0032B01F2215/0409G01N11/14G01N2001/386G01N2011/0006G01N2011/0026G01N2011/0053
    • The present invention relates to a method of monitoring a flow behaviour of mixed components, comprising: rotating a mixing impeller at a first speed N 1 in a mixing vessel accommodating the components to be mixed; determining a first quantity (formula I) at the first speed N 1 , wherein N 1 is the speed at which the mixing impeller rotates and P 1 is the power required to rotate the mixing impeller at the first speed N 1 ; decreasing the speed of the mixing impeller to a speed N 2 ; determining a second quantity (formula II) at the second speed N 2 , wherein N 2 is the speed at which the mixing impeller rotates and P 2 is the power required to rotate the mixing impeller at the second speed N 2 ; comparing the first quantity (formula I) and the second quantity (formula II) and detecting whether the difference between the first and second quantities is within a specified range to determine whether the flow of the components in the mixing vessel is a turbulent flow; determining the density ρ of the mixed components based on at least one speed N i for which the flow is determined to be turbulent by the formula (III) wherein ρ is the density, P i is the power required to turn the mixing impeller at the speed N i , N P,constant is the Power number for a used mixing system configuration, N i is the speed at which the mixing impeller rotates and D is the diameter of the mixing impeller; further decreasing the speed of the mixing impeller; determining the Power number N P,variable for at least one detected speed N j at which the flow is determined to be non-turbulent by the formula (IV) wherein P j is the power required to rotate the mixing impeller at the speed N j , ρ is the density previously determined based on N P,constant, N j is the speed at which the mixing impeller rotates, and D is the diameter of the mixing impeller; and determining the dynamic viscosity μ of the mixed components by the formula (V) wherein ρ is the calculated density, N j is the speed at which the mixing impeller rotates, D is the diameter of the mixing impeller, P j is the power required to rotate the mixing impeller at the speed N j and x T corresponds to a specified relationship between the Reynolds number for the used mixing system configuration and the determined Power number N P,variable . Further, the present invention relates to methods for detecting settled solids at a mixing impeller.
    • 本发明涉及一种监测混合部件的流动行为的方法,包括:在混合容器中以第一速度N 1旋转混合叶轮,混合容器容纳组分 混合; 在第一速度N 1下确定第一量(式I),其中N 1是混合叶轮旋转的速度,并且P 1 >是以第一速度N 1旋转搅拌叶轮所需的动力; 将搅拌叶轮的速度降低到N 2 / N; 在第二速度N 2下确定第二量(式II),其中N 2是混合叶轮旋转的速度,并且P 2 >是以第二速度N 2旋转搅拌叶轮所需的动力; 比较第一数量(公式I)和第二数量(公式II),并检测第一和第二数量之间的差异是否在指定的范围内以确定混合容器中的组分的流动是否是湍流; 基于至少一个速度N i,确定混合成分的密度ρ,通过公式(III)确定流动为湍流,其中ρ 是密度,P i是以速度N i,N P,恒定速度旋转混合叶轮所需的功率, 是用过的混合系统配置的功率数量,N i是混合叶轮旋转的速度,D是混合叶轮的直径; 进一步降低混合叶轮的速度; 对于通过公式(IV)确定流量为非湍流的至少一个检测速度N determining确定功率数量N,变量,其中P < 是以速度N j旋转搅拌叶轮所需的功率,ρi是基于N P预先确定的密度, 常数,Nj是搅拌叶轮旋转的速度,D是搅拌叶轮的直径; 并通过公式(V)确定混合组分的动态粘度μ,其中ρ是计算的密度,N j是在 其中混合叶轮旋转,D是混合叶轮的直径,P j是使混合叶轮以速度N j和x n旋转所需的功率, T 对应于所使用的混合系统配置的雷诺数与确定的功率数量N <变量之间的指定关系。 此外,本发明涉及用于检测混合叶轮处的沉降固体的方法。