Acoustic cleaning of optical probe window

Details Acoustic cleaning of optical probe window Acoustic cleaning of optical probe window

G - Physics

01

N

G01N 21/15 (2006.01) B08B 3/12 (2006.01) B08B 7/02 (2006.01) G01N 21/85 (2006.01)

Patent

CA 2722935

The present invention relates to a system for removing deposits from measuring instruments measuring chosen characteristics of a fluid medium contained in a pipe or container, the measuring instrument comprising a window (10) and a first surface (12) having contact with said medium, said first surface (12) being positioned on one end defining a probe head (2) of an elongated member (13) adapted to be extending through the wall (6) of said pipe or container, the outer end of said member (13) being positioned outside said wall (6), the cleaning system comprising an acoustic transducer (5) positioned on the other end of said elongated member (13), wherein said acoustic transducer (5) is acoustically coupled to the elongated member (13) so as to couple acoustic energy thereto, the acoustic energy propagating along said member (13) to the end (2,12) of the probe (1) being in contact with the fluid inside the pipe or container, the resulting vibrations of which removing any contaminations from said window (10) by inducing cavitation.

La présente invention concerne un système permettant de supprimer les dépôts dinstruments de mesure mesurant des caractéristiques choisies dun milieu fluide contenu dans un tuyau ou un récipient, linstrument de mesure comprenant une fenêtre (10) et une première surface (12) en contact avec ledit milieu, ladite première surface (12) étant positionnée sur une extrémité définissant une tête de sonde (2) dun élément allongé (13) conçu pour sétendre à travers la paroi (6) dudit tuyau ou récipient, lextrémité externe dudit élément (13) étant positionnée à lextérieur de ladite paroi (6), le système de nettoyage comprenant un transducteur acoustique (5) positionné sur lautre extrémité dudit élément allongé (13), ledit transducteur acoustique (5) étant couplé acoustiquement à lélément allongé (13) de façon à y coupler lénergie acoustique, lénergie acoustique se propageant le long dudit élément (13) vers lextrémité (2, 12) de la sonde (1) en contact avec le fluide à lintérieur du tuyau ou du récipient, dont les vibrations résultantes suppriment toutes les contaminations de ladite fenêtre (10) par linduction dune cavitation.

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