F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
F22B 15/00 (2006.01) F22B 21/08 (2006.01)
Patent
CA 2500586
A package water tube boiler (10) has offset upper (22) and lower (20) steam and water drums located adjacent its opposite side walls (12, 14), with a generally square combustion chamber (36) between the drums. Connecting the drums are generally L-shaped riser and downcomer tubes including convection tubes (28) and radiant tubes (24) extending in vertical and horizontal runs along the sides, top and bottom of the combustion chamber. The tubes, especially the inboard radiant tubes (24), are configured, and their entrances and exits to and from the drums are located, so as to permit increased efficiency and steam generation capacity without increasing the package boiler's outside dimensions, to shield the drums from thermal radiation emanating from the combustion chamber, to locate the boiler's center of gravity equivalent from its side walls, and to fix the upper drum to and support it by the boiler's end walls.
L'invention concerne une chaudière (10) à tubes d'eau compacte ayant des tambours supérieur (22) et inférieur (20) de vapeur et d'eau décalés placés jouxtant ses parois (12, 14) latérales opposées avec, entre les tambours, une chambre de combustion (36) généralement carrée. Des tubes généralement en L de montée et de descente, comprenant des tubes à convection (28) et des tubes radiants (24), relient ces tambours. Ces tubes s'étendent verticalement et horizontalement sur les côtés, au sommet et à la base de la chambre de combustion. Les tubes, notamment les tubes radiants (24) intérieurs, sont conçus, ainsi que leurs entrées dans les tambours et leurs sorties de ces derniers, de manière à permettre une rentabilité et une capacité de production de vapeur accrues, sans augmentation des dimensions extérieures de la chaudière, à protéger les tambours du rayonnement thermique émanant de la chambre de combustion, à placer le centre de gravité de la chaudière à égale distance de ses parois latérales, et à fixer le tambour supérieur aux parois d'extrémité de la chaudière destinées à le supporter.
English John R.
Ridout & Maybee Llp
LandOfFree
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