公开(公告)号：EP0747635A2

公开(公告)日：1996-12-11

申请号：EP96304161.1

申请日：1996-06-05

Applicant: ALLISON ENGINE COMPANY, INC.

Inventor： Puri, Rahul ,  Razdan, Mohan K. ,  Smith, Duane A. ,  Stansel, David M.

IPC: F23R3/12 ,  F23R3/28

CPC classification number: F23R3/12 ,  F23R3/286 ,  F23R3/346 ,  F23R2900/03041 ,  F23R2900/03342 ,  Y02T50/675

Abstract: The present invention relates generally to a lean premix module for an industrial gas turbine engine to satisfy increasingly stringent environmental requirements. A combustion system of the present invention employs a lean premix technique to meet the engine operability requirements and high power emission targets without the use of combustor diluent injection or post combustor exhaust treatment. A lean premix combustion mode is utilized to minimize primary zone combustion temperatures and limit the oxides of nitrogen production during high power engine operation. In one form of the present invention, the lean premix combustion is carried out in an off centerline silo combustor having a plurality of lean premix modules positioned parallel within a common liner. The lean premix modules receive the air from the compressor into a radial swirler and the fuel is dispensed along the radial swirler in order to be premixed with the air. A nozzle having a converging-diverging section is utilized to accelerate the fluid flow in the converging portion to prevent flashback, and in the diverging portion to expand the fluid flow to induce a centrally located recirculation zone. In another form of the present invention, the lean premix module is located inline in a can-annular combustion system.

Abstract translation: 本发明一般涉及一种用于工业燃气涡轮发动机的精益预混模块，以满足越来越严格的环境要求。 本发明的燃烧系统采用稀薄预混技术以满足发动机的可操作性要求和高功率发射目标，而不需要使用燃烧器稀释剂喷射或后燃烧器排气处理。 利用稀薄预混合燃烧模式来最小化初级区域燃烧温度并限制在大功率发动机运行期间氮气生产的氧化物。 在本发明的一种形式中，贫预混合燃烧在具有平行于公共衬套的多个贫预混模块的偏心中心筒仓燃烧器中进行。 精益预混模块将来自压缩机的空气接收到径向旋流器中，并且沿着径向旋流器分配燃料以便与空气预混合。 具有会聚分歧部分的喷嘴用于加速会聚部分中的流体流动，以防止回流，并且在发散部分中扩张流体流动以引起居中定位的再循环区域。 在本发明的另一种形式中，贫预混模块位于罐环式燃烧系统中。