公开(公告)号：US5479781A

公开(公告)日：1996-01-02

申请号：US400640

申请日：1995-03-07

申请人： Thomas F. Fric ,  Anil Gulati

发明人： Thomas F. Fric ,  Anil Gulati

IPC分类号： F23C3/00 ,  F23R3/10 ,  F23R3/28 ,  F23R3/58 ,  F02C1/00

CPC分类号： F23R3/10 ,  F23C3/006 ,  F23R3/28 ,  F23R3/58 ,  F05B2250/322

摘要： Lean direct injection is used in a gas turbine combustor to reduce NO.sub.x emissions. The combustor has a plurality of fuel jets for tangentially injecting fuel and a plurality of air jets for tangentially injecting air therein. The fuel jets and the air jets are preferably disposed in a common cross-sectional plane, although additional groups of fuel and air jets in other planes can be provided. The jets are all evenly spaced and alternate between fuel and air jets. All of the jets preferably point in the same circumferential direction. Alternatively, the jets can be arranged so that all fuel jets are located in a first cross-sectional plane, and all air jets are located in a second cross-sectional plane. Preferably, the fuel jets point in one circumferential direction while the air jets point in the opposite circumferential direction.

摘要翻译： 在燃气轮机燃烧器中使用精益直接喷射以减少NOx排放。 燃烧器具有用于切向喷射燃料的多个燃料喷射器和用于在其中切向喷射空气的多个空气射流。 燃料喷射和空气喷射优选地设置在共同的横截面中，但是可以提供其它平面中的另外的一组燃料和空气射流。 喷气机均匀间隔，燃油和空气喷气之间交替。 所有喷射器优选地指向相同的圆周方向。 或者，喷射器可以被布置成使得所有燃料喷嘴位于第一横截面中，并且所有空气射流都位于第二横截面中。 优选地，燃料喷嘴指向一个圆周方向，同时空气射流指向相反的圆周方向。

公开(公告)号：US5437158A

公开(公告)日：1995-08-01

申请号：US243609

申请日：1994-05-16

申请人： Thomas F. Fric

发明人： Thomas F. Fric

IPC分类号： F23R3/10 ,  F23R3/28 ,  F23R3/34

CPC分类号： F23R3/10 ,  F23R3/28 ,  F02B2275/14 ,  Y02T50/675

摘要： Lean direct injection is used in a gas turbine combustor to reduce NO.sub.x emissions. The combustor has a multi-hole perforated plate disposed at the head end of the combustion chamber. The plate has a plurality of independent fuel jets and air jets for separately injecting fuel and air, respectively, into the combustion chamber in amounts which produce a lean fuel-air equivalence ratio. The perforated plate permits the fuel and air to be injected separately without any mixing outside of the combustion chamber. Fuel is delivered to the fuel jets by a fuel manifold having a branch connected to each one of the fuel jets. Air can be delivered to the air jets by an air plenum chamber located upstream of the perforated plate and in fluid communication with the air jets.

摘要翻译： 在燃气轮机燃烧器中使用精益直接喷射以减少NOx排放。 燃烧器具有设置在燃烧室的头端的多孔多孔板。 该板具有多个独立的燃料射流和空气射流，分别以产生贫燃料 - 空气当量比的量分别将燃料和空气分别喷入燃烧室。 多孔板允许燃料和空气分开注入，而不会在燃烧室外混合。 通过具有连接到每个燃料喷嘴的分支的燃料歧管将燃料输送到燃料喷嘴。 空气可以通过位于多孔板上游并与空气流体连通的空气增压室输送到空气喷射器。

公开(公告)号：US5247797A

公开(公告)日：1993-09-28

申请号：US811731

申请日：1991-12-23

申请人： Thomas F. Fric ,  Masayoshi Kuwata

发明人： Thomas F. Fric ,  Masayoshi Kuwata

IPC分类号： F02C3/30 ,  F23C7/00 ,  F23R3/30

CPC分类号： F23C7/00

摘要： Reducing NO.sub.x emission levels from a gas turbine combustor having a premixer section by mixing a small portion of air into the fuel prior to injection into the premixer section. The portion of diverted air is approximately five percent of the total amount of air injected into the premixer section or such that the resulting fuel-air mixture in the fuel line is approximately half fuel and half air. The injection of air into the fuel line, referred to as "head start partial premixing," is effective to reduce the fluctuations and nonuniformities in the fuel concentration levels which increase NO.sub.x output.