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2. 发明授权

US06438961B2 Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion 有权
标题翻译：基于喷嘴的燃烧器管预混合器，包括用于低排放燃烧的入口空调
公开(公告)号：US06438961B2
公开(公告)日：2002-08-27
申请号：US09811764
申请日：2001-03-20
申请人： Richard Sterling Tuthill , William Theodore Bechtel, II , Jeffrey Arthur Benoit , Stephen Hugh Black , Robert James Bland , Guy Wayne DeLeonardo , Stefan Martin Meyer , Joseph Charles Taura , John Luigi Battaglioli
发明人： Richard Sterling Tuthill , William Theodore Bechtel, II , Jeffrey Arthur Benoit , Stephen Hugh Black , Robert James Bland , Guy Wayne DeLeonardo , Stefan Martin Meyer , Joseph Charles Taura , John Luigi Battaglioli
IPC分类号： F23R314
CPC分类号： F23C7/004 , F23C2900/07001 , F23D14/02 , F23D2206/10 , F23D2900/14021 , F23M9/02
摘要： A burner for use in a combustion system of a heavy-duty industrial gas turbine includes a fuel/air premixer having an air inlet, a fuel inlet, and an annular mixing passage. The fuel/air premixer mixes fuel and air into a uniform mixture for injection into a combustor reaction zone. The burner also includes an inlet flow conditioner disposed at the air inlet of the fuel/air premixer for controlling a radial and circumferential distribution of incoming air. The pattern of perforations in the inlet flow conditioner is designed such that a uniform air flow distribution is produced at the swirler inlet annulus in both the radial and circumference directions. The premixer includes a swozzle assembly having a series of preferably air foil shaped turning vanes that impart swirl to the airflow entering via the inlet flow conditioner. Each air foil contains internal fuel flow passages that introduce natural gas fuel into the air stream via fuel metering holes that pass through the walls of the air foil shaped turning vanes. By injecting fuel in this manner, an aerodynamically clean flow field is maintained throughout the premixer. By injecting fuel via two separate passages, the fuel/air mixture strength distribution can be controlled in the radial direction to obtain optimum radial concentration profiles for control of emissions, lean blow outs, and combustion driven dynamic pressure activity as machine and combustor load are varied.
摘要翻译：用于重型工业燃气轮机的燃烧系统的燃烧器包括具有空气入口，燃料入口和环形混合通道的燃料/空气预混合器。燃料/空气预混合器将燃料和空气混合成均匀的混合物，用于注入燃烧器反应区。燃烧器还包括设置在燃料/空气预混合器的空气入口处的入口流动调节器，用于控制进入空气的径向和周向分布。入口流动调节器中的穿孔图案被设计成使得在径向和圆周方向上的旋流器入口环上产生均匀的气流分布。预混合器包括具有一系列优选为空气箔形的转动叶片的喷嘴组件，该旋转叶片赋予经由入口流动调节器进入的气流涡流。每个空气箔包含内部燃料流动通道，其通过燃烧计量孔将天然气燃料引入空气流中，所述燃料计量孔穿过所述翼状叶片的转动叶片的壁。通过以这种方式喷射燃料，在整个预混合器中保持空气动力学清洁的流场。通过经由两个独立的通道喷射燃料，燃料/空气混合物的强度分布可以在径向方向上被控制，以获得最佳径向浓度分布，用于控制排放，稀薄吹出和燃烧驱动的动态压力活动，因为机器和燃烧器负荷变化。

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