Sootblower nozzle

Details Sootblower nozzle Sootblower nozzle

F - Mech Eng,Light,Heat,Weapons

23

J

F23J 3/02 (2006.01) B05B 1/34 (2006.01) F22B 37/48 (2006.01) F28G 1/16 (2006.01) F28G 3/16 (2006.01)

Patent

CA 2185561

A nozzle (40) for a sootblower is used to project a cleaning agent against the internal surface of a boiler for removing fireside deposit. The nozzle (40) of the present invention incorporates a passageway having a convergent segment between its entrance end most narrow point, the throat (47). Extending from the throat (47) to the nozzle's (40) exit is an expansion chamber (51) in which the cleaning fluid passing therein expands and drops in pressure to substantially ambient pressure. The flow streams of the jet of the cleaning agent discharged from the nozzle (40) is essentially parallel to the center axis of the nozzle (40). Additionally, the nozzles (40) can be mounted diametrically opposed or spaced along the longitudinal axis of the lance tube. Moreover, the nozzles (40) mounted in a lance tube can be mounted flush with the outside surface of the lance tube,contoured to its shape.

On utilise une buse (40) dans un appareil pour éliminer la suie, pour projeter un agent nettoyant contre la surface interne d'une chaudière, afin d'en éliminer les dépôts d'imbrulés. La buse (40) selon la présente invention comporte un passage ayant un segment convergent au niveau de son point d'entrée le plus étroit, la gorge (47). Entre la gorge (47) et la sortie de la buse (40), il y a une chambre d'expansion (51) dans laquelle le fluide de nettoyage passe en subissant une perte de pression, la pression diminuant sensiblement jusqu'à la pression ambiante. Les flux d'agent de nettoyage sortant de la buse (40) sont sensiblement parallèles à l'axe central de la buse (40). En outre, les buses (40) peuvent être montées dans des positions diamétralement opposées, ou espacées suivant l'axe longitudinal du tube de la lance. De plus, les buses (40) peuvent être montées dans le tube de la lance à fleur de la surface dudit tube, et épouser cette surface.

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