Impingement cooled liner for dry low nox venturi combustor

Details Impingement cooled liner for dry low nox venturi combustor Impingement cooled liner for dry low nox venturi combustor

F - Mech Eng,Light,Heat,Weapons

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F23R 3/00 (2006.01) F23R 3/34 (2006.01)

Patent

CA 1315995

51DV2910 IMPINGEMENT COOLED LINER FOR DRY LOW NOx VENTURI COMBUSTOR Abstract of the Disclosure It has been found that in a dry low NOx combustor of the type having an upstream combustion chamber and a downstream combustion chamber inter- connected by a venturi section, the fuel-air ratio and uniform fuel-air mixing can be improved by providing an annular shield upstream of the venturi region. The shield is impingement cooled through the venturi and provision is made for dumping cooling air farther down- stream in the downstream combustion chamber. With the aforesaid improvements in mind, the upstream combustion chamber is provided with first and second inner liners which are also impingement cooled and which provide combustion air farther upstream into the upstream com- bustion chamber to further improve fuel-air mixing and to maintain the desired fuel-air ratio.

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