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    • 1. 发明授权
    • Unsteady flow meter
    • 不稳定流量计
    • US07519483B2
    • 2009-04-14
    • US10589509
    • 2005-02-16
    • Eric FoucaultPhilippe SzegerJanick LaumonierPhilippe Micheau
    • Eric FoucaultPhilippe SzegerJanick LaumonierPhilippe Micheau
    • G01F1/34
    • G01F1/363G01F1/50
    • The invention makes it possible to measure, in real time, the flow of a fluid that is incompressible while having an unsteady flow. The pressure measuring system is primarily comprised of a negative-pressure element (1) placed within the flow and provided with two wall pressure taps (A, B). A means (2) for measuring a pressure difference connected to the pressure taps (A, B) enables the following formula to be solved: dq(t)/dt+α(q(t))=β×Δp(t) directly stemming from fundamental equations of fluid mechanics and/or: Δp(t) represents the pressure difference measured by the sensor; q(t) represents the sought volume flow rate, and; α represents a function of the geometry of the negative-pressure element, of the fluid and of the flow q(t), the particularity of this formula being the consideration of the direction of flow in the second term of the left member of the formula.
    • 本发明使得可以实时地测量在具有不稳定流动的同时不可压缩的流体的流动。 压力测量系统主要由放置在流体内的负压元件(1)组成,并具有两个壁压抽头(A,B)。 用于测量与压力抽头(A,B)连接的压力差的装置(2)能够求解以下公式:dq(t)/ dt +α(q(t))= betaxDeltap(t) 流体力学的基本方程和/或:Deltap(t)表示由传感器测量的压差; q(t)表示所寻求的体积流量, α表示负压元件,流体和流量q(t)的几何形状的函数,该公式的特殊性是考虑式的左侧成员的第二项中的流动方向 。
    • 2. 发明申请
    • Unsteady flow meter
    • 不稳定的流量计
    • US20070192047A1
    • 2007-08-16
    • US10589509
    • 2005-02-16
    • Eric FoucaultPhilippe SzegerJanick LaumonierPhilippe Micheau
    • Eric FoucaultPhilippe SzegerJanick LaumonierPhilippe Micheau
    • G06F19/00
    • G01F1/363G01F1/50
    • The invention makes it possible to measure, in real time, the flow of a fluid that is incompressible while having an unsteady flow. The pressure measuring system is primarily comprised of a negative-pressure element (1) placed within the flow and provided with two wall pressure taps (A, B). A means (2) for measuring a pressure difference connected to the pressure taps (A, B) enables the following formula to be solved: dq(t)/dt+α(q(t))=βX×Δp(t) directly stemming from fundamental equations of fluid mechanics and/or: Δp(t) represents the pressure difference measured by the sensor; q(t) represents the sought volume flow rate, and; α represents a function of the geometry of the negative-pressure element, of the fluid and of the flow q(t), the particularity of this formula being the consideration of the direction of flow in the second term of the left member of the formula.
    • 本发明使得可以实时地测量在具有不稳定流动的同时不可压缩的流体的流动。 压力测量系统主要由放置在流体内的负压元件(1)组成,并具有两个壁压抽头(A,B)。 用于测量与压力抽头(A,B)连接的压力差的装置(2)能够求解以下公式:dq(t)/ dt +α(q(t))=βXxDeltap(t) 流体力学的基本方程和/或:Deltap(t)表示由传感器测量的压差; q(t)表示所寻求的体积流量, α表示负压元件,流体和流量q(t)的几何形状的函数,该公式的特殊性是考虑式的左侧成员的第二项中的流动方向 。