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    • 37. 发明授权
    • Flashback resistant pre-mix burner for a gas turbine combustor
    • 用于燃气轮机燃烧器的防反冲预燃烧器
    • US06786047B2
    • 2004-09-07
    • US10245768
    • 2002-09-17
    • Robert BlandAnil GulatiJohn Battaglioli
    • Robert BlandAnil GulatiJohn Battaglioli
    • F02C100
    • F23D14/82F23D2900/00008F23D2900/14004F23R3/14F23R3/286
    • A pre-mixing burner (10) for a gas turbine engine having improved resistance to flashback. Fuel (32) is supplied to a pre-mixing chamber (24) of the burner from a plurality of fuel outlet openings (34) formed in fuel pegs (36) extending into the flow of air (30) passing through the chamber. The fuel outlet openings are formed to direct the fuel in a downstream direction at an angle (A) relative to the direction of the flow of air past the respective fuel peg. This angle imparts a downstream velocity vector (VD) for increasing the net velocity of the air and a normal velocity vector (VN) for directing the fuel away from the wake (44) formed downstream of the fuel peg. Alternate ones of the fuel outlet openings along a single fuel peg may be formed at respective positive (A) and negative (B) angles with respect to a plane (46) extending along the wake in order to minimize the size of the wake. The propensity of the burner to support upstream flame propagation and flashback is thus reduced by increasing the net air velocity, by minimizing the amount of fuel entrained in the wake, and by minimizing the size of the wake.
    • 一种用于燃气涡轮发动机的预混合燃烧器(10),其具有改进的抗回火性能。 燃料(32)从形成在延伸进入通过该室的空​​气流(30)的燃料栓(36)中的多个燃料出口(34)供应到燃烧器的预混合室(24)。 燃料出口开口形成为相对于通过相应的燃料栓的空气流的方向在下游方向上以相对于空气流的方向(A)引导燃料。 该角度赋予用于增加空气净速度的下游速度矢量(VD)和用于引导燃料远离形成在燃料栓的下游的尾流(44)的正常速度矢量(VN)。 沿着单个燃料栓的燃料出口开口中的替代燃料出口可相对于沿着尾流延伸的平面(46)以相对的正(A)和负(B)角度形成,以便最小化尾流的尺寸。 燃烧器支持上游火焰传播和回火的倾向因此通过增加净空气速度来减少,通过最小化在尾流中夹带的燃料的量以及通过使尾流的尺寸最小化来实现。