-
公开(公告)号：JPH11237048A
公开(公告)日：1999-08-31
申请号：JP35368098
申请日：1998-12-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SNYDER TIMOTHY S , SOWA WILLIAM A , MORFORD STEPHEN A , VAN DYKE KEVIN J
Abstract: PROBLEM TO BE SOLVED: To suppress the formation of a nitrogen oxide and at the same time improve the durability of an injector and combustion equipment. SOLUTION: A fuel injector 10 for gas turbine engine includes a scroll 18 where an edge part forms an entrance slot 36, and the slot 36 guides primary combustion air, along a tangential direction, into a mixing room 28 that is bounded by edge plates 14 and 16 being separated from the scroll 18 in the longitudinal direction. A row of fuel injection channels 42 is extended over the length of the slot 36. The injector 10 also includes a center body 48 with a wide tip part 54 for discharging flame. The center body 48 prevents combustion flame from flowing into the mixing room 28 and improves the durability of the combustion equipment 10 by discharging flame when it flows in. Also, by controlling a fuel being discharged through the injection channel 42, the capacity for the center body 48 to discharge flame can be improved and at the same time the flame can be stabilized spatially.
-
公开(公告)号：JPH11311415A
公开(公告)日：1999-11-09
申请号：JP7891199
申请日：1999-03-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MORFORD STEPHEN A
Abstract: PROBLEM TO BE SOLVED: To provide a premixing type fuel injector, restraining the formation of NOx or CO and stabilize a combustion flame while having prominent durability. SOLUTION: The center body of a fuel injector comprises a nozzle 50 for introducing secondary fuel and secondary air into a combustion chamber. The nozzle 50 comprises a collision plate 74, having rows of collision ports 76, and a tip end cap 104, having rows of core discharging flow passages 106. The position of the collision ports 76 is not coinciding with the position of the discharging flow passage 106 mutually so as to conduct air to flow sequentially and, therefore, the secondary air, discharged out of the collision ports 76, flows through the core discharging flow passage 106 after colliding against the tip end cap 104 whereby the nozzle 50 is cooled through collision cooling and blow cooling. This injector can be operated at a lower temperature compared with a conventional tangential direction entry injector whereby durability is improved compared with that of the conventional injector.
-
公开(公告)号：JPH10196958A
公开(公告)日：1998-07-31
申请号：JP36523897
申请日：1997-12-19
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MORFORD STEPHEN A , KRAMER STEPHEN K , GRAVES CHARLES B
IPC: F02C7/232 , F02C9/28 , F02M61/16 , F23C7/00 , F23D11/12 , F23D11/36 , F23D17/00 , F23R3/12 , F23R3/28 , F23R3/30 , F23R3/34
Abstract: PROBLEM TO BE SOLVED: To obtain a method for operating an tangential inlet fuel nozzle at a lean fuel/air ratio in which low NOx and low CO can be achieved without causing unstability of combustion. SOLUTION: First part of combustion air is introduced to the mixing section 28 of a fuel nozzle 10 and the fuel is introduced to the first part of combustion air and mixed therewith. Second part of combustion air is introduced radially inward to the first part of combustion air at the burner inlet port 20 of a scroll swirler 14. Total air flow rate of the first and second part of combustion air is limited and the second part of combustion air is set at 85-89% of the total air flow rate.
-
公开(公告)号：CA2266818C
公开(公告)日：2005-09-20
申请号：CA2266818
申请日：1999-03-23
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MORFORD STEPHEN A
Abstract: The invention is a tangential entry, premixing fuel injector (10) for the combustion chamber (30) of a turbine engine. The injector includes a pair of arcuate scrolls (18) defining the radially outer boundary of a mixing chamber (28) and a pair of air entry slots (36) for admitting a stream of primary combustion air tangentially into the mixing chamber. The scrolls also include an axially distributed array of primary fu el injection passages (42) for injecting a primary fuel into the primary air stream. A flame stabilizing fuel injector centerbody (46) includes an impingement and transpiration cool ed outlet nozzle (50) for introducing secondary fuel and secondary air into the combustion chamber. The nozzle (50) includes an impingement plate(74) with an array of impingeme nt ports (76) and a tip cap (104) with an array of discharge passages (106). The impingement ports and discharge passages are in series flow, misaligned relationship so that secondary air exiting from the impingement ports impinges on the tip cap and flows through the core discharge passages to impingement cool and transpiration cool the nozzle. Th e disclosed injector runs cooler than a more, conventional tangential entry injector and therefore is more durable. The improved durability is achieved even though the disclosed injector uses less cooling air than a more conventional tangential entry injector and discharges the cooling air at a lower velocity. The reduced cooling air quantity helps to minimize carbon monoxide emissions and the reduced discharge velocity improves the spatial a nd temporal stability of the combustion flame.
-
公开(公告)号：DE69920088T2
公开(公告)日：2005-01-20
申请号：DE69920088
申请日：1999-03-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MORFORD STEPHEN A
Abstract: The invention is a tangential entry, premixing fuel injector (10) for the combustion chamber (30) of a turbine engine. The injector includes a pair of arcuate scrolls (18) defining the radially outer boundary of a mixing chamber (28) and a pair of air entry slots (36) for admitting a stream of primary combustion air tangentially into the mixing chamber. The scrolls also include an axially distributed array of primary fuel injection passages (42) for injecting a primary fuel into the primary air stream. A flame stabilizing fuel injector centerbody (46) includes an impingement and transpiration cooled outlet nozzle (50) for introducing secondary fuel and secondary air into the combustion chamber. The nozzle (50) includes an impingement plate(74) with an array of impingement ports (76) and a tip cap (104) with an array of discharge passages (106). The impingement ports and discharge passages are in series flow, misaligned relationship so that secondary air exiting from the impingement ports impinges on the tip cap and flows through the core discharge passages to impingement cool and transpiration cool the nozzle. The disclosed injector runs cooler than a more conventional tangential entry injector and therefore is more durable. The improved durability is achieved even though the disclosed injector uses less cooling air than a more conventional tangential entry injector and discharges the cooling air at a lower velocity. The reduced cooling air quantity helps to minimize carbon monoxide emissions and the reduced discharge velocity improves the spatial and temporal stability of the combustion flame.
-
Patent Agency Ranking
公开(公告)号：DE69822102T2
公开(公告)日：2004-07-22
申请号：DE69822102
申请日：1998-12-10
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SNYDER TIMOTHY S , SOWA WILLIAM A , MORFORD STEPHEN A , VAN DYKE KEVIN J
Abstract: A tangential entry premixing fuel injector (10) for a gas turbine engine combustor 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 of fuel injection passages (42) extends along the length of the slots. The passage array is configured to inject a primary fuel nonuniformly along the length of the air entry slots and to control the fuel penetration depth d in proportion to slot height H. The injector also includes a flame disgorging centerbody (48) having a bluff tip (54) longitudinally aligned 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 ingestion of combustion flame into the mixing chamber (28) and reliably disgorging any flame that is ingested.
-
公开(公告)号：CA2266818A1
公开(公告)日：1999-09-24
申请号：CA2266818
申请日：1999-03-23
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MORFORD STEPHEN A
Abstract: The invention is a tangential entry, premixing fuel injector (10) for the combustion chamber (30) of a turbine engine. The injector includes a pair of arcuate scrolls (18) defining the radially outer boundary of a mixing chamber (28) and a pair of air entry slots (36) for admitting a stream of primary combustion air tangentially into the mixing chamber. The scrolls also include an axially distributed array of primary fuel injection passages (42) for injecting a primary fuel into the primary air stream. A flame stabilizing fuel injector centerbody (46) includes an impingement and transpiration cooled outlet nozzle (50) for introducing secondary fuel and secondary air into the combustion chamber. The nozzle (50) includes an impingement plate(74) with an array of impingement ports (76) and a tip cap (104) with an array of discharge passages (106). The impingement ports and discharge passages are in series flow, misaligned relationship so that secondary air exiting from the impingement ports impinges on the tip cap and flows through the core discharge passages to impingement cool and transpiration cool the nozzle. The disclosed injector runs cooler than a more, conventional tangential entry injector and therefore is more durable. The improved durability is achieved even though the disclosed injector uses less cooling air than a more conventional tangential entry injector and discharges the cooling air at a lower velocity. The reduced cooling air quantity helps to minimize carbon monoxide emissions and the reduced discharge velocity improves the spatial and temporal stability of the combustion flame.
-
公开(公告)号：DE69832427T2
公开(公告)日：2006-07-27
申请号：DE69832427
申请日：1998-12-10
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SYNDER TIMOTHY S , MORFORD STEPHEN A , SOWA WILLIAM A , VAN DYKE KEVIN J
Abstract: A tangential entry premixing fuel injector (10) for a gas turbine engine combustor 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 of fuel injection passages (42) extends along the length of the slots. The passage array is configured to inject a primary fuel nonuniformly along the length of the air entry slots and to control the fuel penetration depth d in proportion to slot height H. The injector also includes a flame disgorging centerbody (48) having a bluff tip (54) longitudinally aligned 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 ingestion of combustion flame into the mixing chamber (28) and reliably disgorging any flame that is ingested.
-
公开(公告)号：DE69822102D1
公开(公告)日：2004-04-08
申请号：DE69822102
申请日：1998-12-10
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SNYDER TIMOTHY S , SOWA WILLIAM A , MORFORD STEPHEN A , VAN DYKE KEVIN J
Abstract: A tangential entry premixing fuel injector (10) for a gas turbine engine combustor 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 of fuel injection passages (42) extends along the length of the slots. The passage array is configured to inject a primary fuel nonuniformly along the length of the air entry slots and to control the fuel penetration depth d in proportion to slot height H. The injector also includes a flame disgorging centerbody (48) having a bluff tip (54) longitudinally aligned 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 ingestion of combustion flame into the mixing chamber (28) and reliably disgorging any flame that is ingested.
-
公开(公告)号：CA2475380A1
公开(公告)日：1999-06-15
申请号：CA2475380
申请日：1998-12-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SOWA WILLIAM A , VAN DYKE KEVIN J , MORFORD STEPHEN A
IPC: F23R3/28
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.025 seconds)
