G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 1/36 (2006.01) G01F 1/44 (2006.01)
Patent
CA 2719133
The invention relates to a system for the real-time measurement of the instantaneous flow rate of a fluid having a stationary or non-stationary flow in a duct, which comprises a fluid flow member (1) provided with at least two pressure taps (A, B) on the wall, a means (2) for measuring a pressure difference and coupled to the two pressure taps (A, B), and a calculation means (3) programmed for calculating the real-time flow rate by solving an ordinary non-linear differential equation linking the instantaneous flow rate with the pressure difference, the pressure difference in said formula being positive or negative depending on the variation of the flow rate of the fluid in the duct and/or the flow direction of the fluid, wherein the flow member (1) includes a filter (4) provided between the two pressure taps (A, B) in order to increase the energy loss.
L'invention concerne un système de mesure en temps réel du débit instantané d'un fluide en écoulement d'écoulement (1) du fluide muni d'au moins deux prises de pression (A, B) en paroi, un moyen de mesure (2) d'une différence de pression couple aux deux prises de pression (A, B), et un moyen de calcul (3) programme pour calculer le débit en temps réel par la résolution d'une équation différentielle ordinaire non-linéaire reliant le débit instantané à la différence de pression, la différence de pression dans ladite formule étant positive ou négative en fonction de la variation de la vitesse d'écoulement du fluide dans la conduite et/ou du sens de l'écoulement du fluide, l'organe d'écoulement (1) comprenant un filtre (4) placé entre les deux prises de pression (A, B) pour augmenter la perte de charge.
Foucault Eric
Laumonier Janick
Micheau Philippe Laurent
Szeger Philippe
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Centre National de La Recherche Scientifique (cnrs)
Universite de Poitiers
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