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    • 3. 发明专利
    • System and method for reducing combustion dynamics in turbomachine
    • 用于减少涡轮机燃烧动力学的系统和方法
    • JP2010175243A
    • 2010-08-12
    • JP2010014925
    • 2010-01-27
    • General Electric Co ゼネラル・エレクトリック・カンパニイGeneral Electric Company
    • SINGH KAPIL KUMARKOTHNUR VASANTH SRINIVASAHAN FEI
    • F23R3/16F02C3/30F23R3/32
    • F23R3/286F23R3/00F23R2900/00013
    • PROBLEM TO BE SOLVED: To provide a means for reducing combustion dynamics of a turbomachine. SOLUTION: This turbomachine includes a combustion chamber (48), and at least one pre-mixer (38, 39) mounted on the combustion chamber (48). The at least one pre-mixer (38, 39) includes a body (40, 41) having a first end portion (42, 43) that extends to a second end portion (44, 45). The first end portion (42, 43) is configured to receive an amount of fuel and an amount of air and the second end portion (44, 45) defines an exit plane from which a fuel-air mixture discharges into the combustion chamber (48). The turbomachine also includes a combustion dynamics reduction system (90) operatively coupled to the at least one pre-mixer (38, 39). The combustion dynamics reduction system (90) includes at least one of a boundary layer perturbation mechanism and an acoustic wave introduction system which disrupt a flow pattern of the fuel-air mixture within the at least one pre-mixer (38, 39). COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于减少涡轮机的燃烧动力学的方法。 解决方案:该涡轮机包括燃烧室(48)和安装在燃烧室(48)上的至少一个预混合器(38,39)。 所述至少一个预混合器(38,39)包括具有延伸到第二端部部分(44,45)的第一端部部分(42,43)的主体(40,41)。 第一端部(42,43)被构造成容纳一定量的燃料和一定量的空气,而第二端部(44,45)限定了一个出口平面,燃料 - 空气混合物从该出口平面排放到燃烧室(48 )。 涡轮机还包括可操作地耦合到至少一个预混合器(38,39)的燃烧动力学降低系统(90)。 燃烧动力学降低系统(90)包括边界层扰动机构和声波引入系统中的至少一个,其破坏所述至少一个预混合器(38,39)内的燃料 - 空气混合物的流动模式。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • FUEL SYSTEM ACOUSTIC FEATURE TO MITIGATE COMBUSTION DYNAMICS FOR MULTI-NOZZLE DRY LOW NOx COMBUSTION SYSTEM
    • 燃油系统消声功能,用于减轻多喷嘴低NOx燃烧系统的燃烧动力
    • JP2011137629A
    • 2011-07-14
    • JP2010285235
    • 2010-12-22
    • General Electric Co ゼネラル・エレクトリック・カンパニイGeneral Electric Company
    • KIM KWANWOOSINGH KAPIL KUMARHAN FEISRINIVASAN SHIVA
    • F23R3/20F02C7/22F02C7/228F23R3/28
    • F02C7/228F02C7/22F05D2240/128F05D2270/082F23R3/28F23R2900/00014Y10T29/49826
    • PROBLEM TO BE SOLVED: To solve the problem, wherein in a dry low NOx combustor, combustion dynamics are concerned as an element which may inhibit the activity of a system, shorten the service lives of components and reduce relative durability and fluctuation of air fuel ratio causes fluctuation of heat release amount, leading to continuance of the combustion dynamics as a result, and to provide a system for mitigating the combustion dynamics. SOLUTION: A dry low NOx fuel nozzle 10 includes: one or more downstream orifices 20 formed to define a first fluid flow passage 21 along which fluid is directed to flow; an upstream orifice 40, located upstream from the downstream orifices 20, formed to define a second fluid flow passage 41 along which the fluid is directed to flow; and connecting passages 50, disposed to fluidly couple the first and second fluid flow passages of the downstream and upstream orifices, respectively, to one another. At least one of a radial size and an axial location of the upstream orifice 40 is set to cooperatively detune an acoustic impedance of a fuel system. COPYRIGHT: (C)2011,JPO&INPIT
    • 解决的问题为了解决在干式低NOx燃烧器中的燃烧动力学作为可能抑制系统的活性的因素,缩短部件的使用寿命并降低相对耐久性和波动的问题 空燃比导致放热量的波动,结果导致燃烧动力学的持续性,并且提供用于减轻燃烧动态的系统。 干燥的低NOx燃料喷嘴10包括:一个或多个下游孔口20,其形成为限定流体被引导流动的第一流体流动通道21; 位于下游孔20上游的上游孔40形成为限定流体被引导流过的第二流体流动通道41; 以及连接通道50,其设置成将下游和上游孔的第一和第二流体流动通道彼此流体地联接。 上游孔40的径向尺寸和轴向位置中的至少一个被设定为协调地使燃料系统的声阻抗失谐。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • System and method for controlling combustion dynamics
    • 用于控制燃烧动力学的系统和方法
    • JP2010261699A
    • 2010-11-18
    • JP2010096577
    • 2010-04-20
    • General Electric Co ゼネラル・エレクトリック・カンパニイGeneral Electric Company
    • SINGH KAPIL KUMARHAN FEISRINIVASAN SHIVAKIM KWANWOO
    • F23K5/00F02C7/22F02C9/28F23C15/00
    • F23D14/48F02C7/222F02C9/28F05D2260/964F23D2900/14482F23N5/24F23R2900/00013
    • PROBLEM TO BE SOLVED: To provide a fail-safe and synchronization-type system for controlling combustion dynamics in a combustor, and its method. SOLUTION: The control system 22 includes a fuel supply passage 24 having an inlet part 26, a first split flow part 28, a second split flow part 30, and an outlet part 34. The first split flow part 28 includes a first length and a first diameter. The second split flow part 30 includes a second length and a second diameter, and is arranged to be spaced from the first split flow part 28. The first/second split flow parts 28, 30 join together at a merging position 32. The outlet part 34 is connected to the merging position 32 of the first/second split flow parts 28, 30. At least one of flow rate adjustment devices 36, 38 is connected to the inlet part 26, and fuel flow is split alternately to the first/second split flow parts 28, 30 to generate fuel flow perturbation at the merging position 32. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于控制燃烧器中的燃烧动力学的故障安全和同步型系统及其方法。 解决方案:控制系统22包括具有入口部分26,第一分流部分28,第二分流部分30和出口部分34的燃料供给通道24.第一分流部分28包括第一 长度和第一直径。 第二分流部30包括第二长度和第二直径,并且布置成与第一分流部28间隔开。第一/第二分流部28,30在合流位置32处接合在一起。出口部 34连接到第一/第二分流部分28,30的合并位置32.流量调节装置36,38中的至少一个连接到入口部分26,并且燃料流被交替地分裂成第一/第二分流 分流流动部分28,30,以在合并位置32产生燃料流动扰动。版权所有(C)2011,JPO&INPIT