F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 1/18 (2006.01) F16K 1/20 (2006.01) F23L 3/00 (2006.01) F23L 13/02 (2006.01)
Patent
CA 2198459
The invention relates to a throttle device for delivery of a current of gas through a channel (1), the device comprising a flap (4) which is arranged so that it can pivot on an axle (5) and which is designed in such a way that, at a certain pressure force exerted by the current of gas, it is opened from a position in which the channel (1) is essentially closed. The invention is characterized in that it comprises at least one weight (7) which is arranged to rotate together with the flap (4) and is designed to deliver a torque to the axle (5) in conjunction with the pivoting of the flap (4). The invention is intended in particular for recovery boilers, or heating boilers or steam boilers for solid fuels. The invention achieves an improved air penetration in respect of air flowing into the boiler.
La présente invention concerne un dispositif d'étranglement pour la décharge d'un flux gaz au travers d'un conduit (1). Le dispositif est constitué d'un volet (4) pivotant autour d'un axe (5) et s'ouvrant sous l'effet d'une certaine force de pression exercée par le courant du gaz, depuis une position dans laquelle le conduit est sensiblement fermé. L'invention se caractérise en ce qu'au moins une masselotte (7) est prévue, accompagnant la rotation du clapet (4) et appliquant sur l'axe (5) un couple correspondant à la rotation du volet (4). L'invention, destinée en l'occurrence à des chaudières de récupération, à des chaudières de chauffage ou à des chaudières à vapeur utilisant des combustibles solides, garantit une meilleure pénétration de l'air admis dans la chaudière, par rapport à l'air circulant dans celle-ci.
Kvaerner Pulping Ab
Marks & Clerk
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