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专利名称：Bluff body premixing fuel injector and
method for premixing fuel and air
发明人：Synder, Timothy S.,Morford, Stephen
A.,Sowa, William A.,Van Dyke, Kevin J.
申请号：EP03008697.9申请日：19981210公开号：EP1340942A3公开日：20030910
专利附图：
摘要：A tangential entry premixing fuel injector (10) for a gas turbine enginecombustor includes a pair of offset scrolls (18) whose ends define a pair of entry slots
(36) for admitting primary combustion air tangentially into a mixing chamber (28)bounded by the scrolls (18) and by longitudinally spaced endplates (14,16). An array offuel injection passages (42) extends along the length of the slots. The passage array isconfigured to inject a primary fuel nonuniformly along the length of the air entry slotsand to control the fuel penetration depth in proportion to slot height H. The injectoralso includes a flame disgorging centerbody (48) having a bluff tip (54) longitudinallyaligned with the injector's discharge plane (22) and a secondary fuel conduit (80)extending through the centerbody for discharging a secondary combustible fluid,preferably gaseous fuel, through a series of fuel discharge openings (84) in the tip (54).The flame disgorging centerbody improves fuel injector durability by resisting ingestionof combustion flame into the mixing chamber (28) and reliably disgorging any flame thatis ingested.
申请人：UNITED TECHNOLOGIES CORPORATION
地址：United Technologies Building, 1 Financial Plaza Hartford, CT 06101 US
国籍：US
代理机构：Leckey, David Herbert
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