B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
B01F 3/08 (2006.01)
Patent
CA 2540866
The inventive nozzle comprises a first releasing stage (1) for producing a pre-release by absorbing from 5 to 20 % of available pressure, a second releasing stage (2) wherein a substantial release is carried out and the pressurised water passes from a saturation pressure to an output nozzle pressure, an intermediate chamber (3) in the form of a transition chamber in which the pressurised water approaches the saturation pressure by absorbing from 5 to 30 % of the available pressure and an outlet tube (3) consisting of a sudden release and cavitation confinement tube whose minimum length (l) substantially corresponds to a distance separating the end of said tube on the second release stage side from a readhesion point of jets to the tube wall at the angle of divergence (.alpha.) thereof ranging from 3 to 12· before readhesion.
Cette buse comporte un premier étage de détente (1) qui réalise une pré- détente en absorbant de 5 à 20% de la pression disponible; un second étage de détente (2), sur lequel s'effectue l'essentiel de la détente et qui fait passer l'eau pressurisée de la pression de saturation à la pression de sortie de la buse; une chambre intermédiaire (3) qui est une chambre de transit dans laquelle l'eau pressurisée approche de la pression de saturation en absorbant 5 à 30 % de la pression disponible et un tube de sortie (4) qui constitue un tube de détente brutale et de confinement de la cavitation, sa longueur minimale (L) correspondant sensiblement à la distance séparant l'extrémité dudit tube côté second étage de détente du point de recollement des jets sur les parois du tube, avec un angle de divergence (.alpha.) des jets, avant recollement, compris entre 3 et 12~.
Degremont
Robic
LandOfFree
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