F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
F26B 21/00 (2006.01) D21F 5/02 (2006.01) D21F 5/10 (2006.01) F26B 13/18 (2006.01)
Patent
CA 2244280
A steam heated web processing roll includes a fully enclosed steam and condensate flow-through system which maintains the roll end walls at approximately the same operating temperature as the functional cylindrical outer roll shell at normal rotational speeds. The closed loop system also assists in purging non-condensible gases from the steam path. At low roll speeds or when the roll is stopped, a valving system closes all of the condensate return paths except one or more of the lowermost paths from which condensate pooling in a sump at the bottom of the roll is withdrawn. This prevents undesirable cooling of the lower portion of the roll as compared to the remaining portion, thereby reducing the possibility of bowing of the roll by thermal distortion.
Un rouleau de traitement d'une feuille continue chauffé à la vapeur comprend un système entièrement clos à circulation continue de vapeur et de condensat qui maintient les parois d'extrémité du rouleau à environ la même température de fonctionnement que la chemise cylindrique fonctionnelle du rouleau à des vitesses de rotation normales. Le système en boucle fermée aide aussi à purger la vapeur des gaz non condensables. Quand le rouleau tourne lentement ou qu'il est arrêté, un système de soupapes ferme tous les chemins de retour de condensat, sauf le ou les plus bas par lesquels le condensat s'accumulant au fond du rouleau est évacué. Ceci prévient le refroidissement non souhaité de la partie inférieure du rouleau par comparaison à la partie restante, et ainsi se trouve réduite la possibilité de cambrage du rouleau par distorsion thermique.
Borden Ladner Gervais Llp
Marquip Inc.
LandOfFree
Steam supply and condensate removal apparatus for heated roll does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steam supply and condensate removal apparatus for heated roll, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steam supply and condensate removal apparatus for heated roll will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1757273