-
公开(公告)号:US6058709A
公开(公告)日:2000-05-09
申请号:US991630
申请日:1997-11-06
CPC分类号: F23N5/16 , F02C7/22 , F23M20/005 , F05D2260/962 , F05D2270/083 , F23D2210/00
摘要: An apparatus and method of operation designed to reduce undesirably high pressure oscillations in lean premix combustion systems burning hydrocarbon fuels are provided. Natural combustion and nozzle acoustics are employed to generate multiple fuel pockets which, when burned in the combustor, counteract the oscillations caused by variations in heat release in the combustor. A hybrid of active and passive control techniques, the apparatus and method eliminate combustion oscillations over a wide operating range, without the use of moving parts or electronics.
摘要翻译: 提供了一种设计用于减少燃烧碳氢燃料的稀薄预混合燃烧系统中不期望的高压振荡的装置和操作方法。 采用自然燃烧和喷嘴声学来产生多个燃料箱,当燃烧器中燃烧时,可以抵消由燃烧器中的放热变化引起的振荡。 主动和被动控制技术的混合,该装置和方法消除了在宽的工作范围内的燃烧振荡,而不使用移动部件或电子设备。
-
公开(公告)号:US5791889A
公开(公告)日:1998-08-11
申请号:US644609
申请日:1996-04-26
申请人: Randall S. Gemmen , George A. Richards , Mui-Tong Joseph Yip , Edward H. Robey , Scott R. Cully , Richard E. Addis
发明人: Randall S. Gemmen , George A. Richards , Mui-Tong Joseph Yip , Edward H. Robey , Scott R. Cully , Richard E. Addis
CPC分类号: F23R3/28 , F23N5/16 , F05D2260/962 , F05D2270/14 , F23R2900/00013 , F23R2900/00014 , Y02T50/677
摘要: High dynamic pressure oscillations in hydrocarbon-fueled combustors typically occur when the transport time of the fuel to the flame front is at some fraction of the acoustic period. These oscillations are reduced to acceptably lower levels by restructuring or repositioning the flame front in the combustor to increase the transport time. A pilot flame front located upstream of the oscillating flame and pulsed at a selected frequency and duration effectively restructures and repositions the oscillating flame in the combustor to alter the oscillation-causing transport time.
摘要翻译: 当燃料到火焰前端的运输时间在声学周期的一小部分时,通常会发生烃燃料燃烧器中的高动态压力振荡。 这些振荡通过重组或重新定位燃烧器中的火焰前沿而降低到可接受的较低水平,以增加运输时间。 位于振荡火焰上游并且以选定的频率和持续时间脉冲的先导火焰前沿有效地重组和重新定位燃烧器中的振荡火焰以改变振荡导致的运输时间。
-