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    Combustors with improved dynamics
    1.
    发明授权
    Combustors with improved dynamics 失效

    公开(公告)号：US06269646B1

    公开(公告)日：2001-08-07

    申请号：US09014952

    申请日：1998-01-28

    申请人： Jeffery Allan Lovett ,  Masayoshi Kuwata ,  Anil Gulati

    发明人： Jeffery Allan Lovett ,  Masayoshi Kuwata ,  Anil Gulati

    IPC分类号： F02C7228

    CPC分类号： F23R3/286 ,  F23C2900/07001 ,  F23D2900/14021 ,  F23R3/20

    摘要： A combustor comprises an outer combustor casing defining a plurality of circumferentially adjoining combustion chambers. Each combustion chamber comprises a dome at an upstream end and an outlet at a downstream end. A plurality of pre-mixers are joined to the combustor dome of each respective combustion chamber. The pre-mixers comprise a duct having an inlet at one end for receiving compressed air, an outlet at an opposite end disposed in flow communication with the combustion chamber and a swirler disposed in the duct adjacent the duct inlet for swirling air channeled therethrough. A fuel injector is provided for injecting fuel into the pre-mixer ducts and for mixing with the air in the ducts for flow into the combustion chamber to generate a combustion flame at the duct outlets. A portion of the pre-mixers comprise an altered flameholding capability so as to distribute the resulting combustion flames from the respective portion of the pre-mixers axially downstream with respect to the non-altered pre-mixers so as to reduce the dynamic pressure amplitude of the combustion flames.

    Fiber optic sensors for gas turbine control
    2.
    发明授权
    Fiber optic sensors for gas turbine control 有权
    用于燃气轮机控制的光纤传感器

    公开(公告)号：US06599028B1

    公开(公告)日：2003-07-29

    申请号：US09328354

    申请日：1999-06-09

    申请人： Emily Yixie Shu ,  Dale Marius Brown ,  Louis Jacob Petrucco ,  Jeffery Allan Lovett ,  Wolfgang Daum ,  Robert John Dunki-Jacobs

    发明人： Emily Yixie Shu ,  Dale Marius Brown ,  Louis Jacob Petrucco ,  Jeffery Allan Lovett ,  Wolfgang Daum ,  Robert John Dunki-Jacobs

    IPC分类号： G02B636

    CPC分类号： G02B6/3644 ,  F23D14/725 ,  F23D14/82 ,  F23N5/08 ,  F23N2031/28 ,  F23N2041/20 ,  F23R3/286 ,  G02B6/3616 ,  G02B6/3664

    摘要： An apparatus for detecting flashback occurrences in a premixed combustor system having at least one fuel nozzle includes at least one photodetector and at least one fiber optic element coupled between the at least one photodetector and a test region of the combustor system wherein a respective flame of the fuel nozzle is not present under normal operating conditions. A signal processor monitors a signal of the photodetector. The fiber optic element can include at least one optical fiber positioned within a protective tube. The fiber optic element can include two fiber optic elements coupled to the test region. The optical fiber and the protective tube can have lengths sufficient to situate the photodetector outside of an engine compartment. A plurality of fuel nozzles and a plurality of fiber optic elements can be used with the fiber optic elements being coupled to respective fuel nozzles and either to the photodetector or, wherein a plurality of photodetectors are used, to respective ones of the plurality of photodetectors. The signal processor can include a digital signal processor.

    摘要翻译： 一种用于检测具有至少一个燃料喷嘴的预混合燃烧器系统中的闪回发生的装置，包括至少一个光电检测器和耦合在所述至少一个光电检测器与所述燃烧器系统的测试区域之间的至少一个光纤元件，其中， 燃油喷嘴在正常运行条件下不存在。 信号处理器监视光电检测器的信号。 光纤元件可以包括位于保护管内的至少一个光纤。 光纤元件可以包括耦合到测试区域的两个光纤元件。 光纤和保护管可以具有足以将光电探测器放置在发动机室外部的长度。 可以使用多个燃料喷嘴和多个光纤元件，其中光纤元件被耦合到相应的燃料喷嘴，并且耦合到光电检测器，或者使用多个光电检测器到多个光电检测器中的相应的光检测器。 信号处理器可以包括数字信号处理器。

    Hybrid can-annular combustor for axial staging in low NOx combustors
    4.
    发明授权
    Hybrid can-annular combustor for axial staging in low NOx combustors 失效
    用于低NOx燃烧器轴向分段的混合罐环式燃烧器

    公开(公告)号：US5974781A

    公开(公告)日：1999-11-02

    申请号：US947452

    申请日：1997-10-06

    申请人： Sanjay Marc Correa ,  Jeffery Allan Lovett

    发明人： Sanjay Marc Correa ,  Jeffery Allan Lovett

    IPC分类号： F23R3/34 ,  F02C3/00

    CPC分类号： F23R3/34

    摘要： The instant invention is directed in general to combustors for gas turbines and, more specifically, to a hybrid can-annular combustor for axial staging in low NOx Combustion. In a preferred embodiment, the instant invention uses premixing stages at different axial positions to carry out axial staging of the heat release for increased operability, where the combustor has a first premixing means for injecting a fuel-air mixture into a can-type configuration for providing the advantages of a can-type combustor for low-load and/or low-temperature conditions and a second premixing means for injecting a fuel-air mixture into an annular-type configuration for providing the advantages of an annular-type combustor for high load and/or high temperature conditions.

    摘要翻译： 本发明总体上涉及用于燃气轮机的燃烧器，更具体地，涉及用于在低NOx燃烧中轴向分段的混合罐环形燃烧器。 在优选实施例中，本发明使用在不同轴向位置的预混合阶段来进行热释放的轴向分段以提高可操作性，其中燃烧器具有用于将燃料 - 空气混合物喷射到罐型配置中的第一预混合装置 提供了用于低负载和/或低温条件的罐式燃烧器的优点和用于将燃料 - 空气混合物喷射到环形构造中的第二预混合装置，以提供用于高的环形型燃烧器的优点 负载和/或高温条件。

    Dynamically uncoupled low nox combustor with axial fuel staging in premixers
    5.
    发明授权
    Dynamically uncoupled low nox combustor with axial fuel staging in premixers 有权
    在预混合器中具有轴向燃料分级的动态分离的低噪声燃烧器

    公开(公告)号：US6164055A

    公开(公告)日：2000-12-26

    申请号：US248749

    申请日：1999-02-12

    申请人： Jeffery Allan Lovett ,  Steven George Goebel

    发明人： Jeffery Allan Lovett ,  Steven George Goebel

    IPC分类号： F23R3/20 ,  F23R3/28 ,  F23R3/32 ,  F23R3/34 ,  F02C7/228

    CPC分类号： F23R3/286 ,  F05B2260/962 ,  F23D2210/00 ,  F23R3/32 ,  F23R2900/00014

    摘要： A low NOx combustor and method improve dynamic stability of a combustion flame fed by a fuel and air mixture. The combustor includes a chamber having a dome at one end thereof to which are joined a plurality of premixers. Each premixer includes a duct with a swirler therein for swirling air, and a plurality of fuel injectors for injecting fuel into the swirled air for flow into the combustion chamber to generate a combustion flame therein. The fuel injectors are axially staged at different axial distances from the dome to uncouple the fuel from combustion to reduce dynamic pressure amplitude of the combustion flame.

    摘要翻译： 低NOx燃烧器和方法提高了由燃料和空气混合物供给的燃烧火焰的动态稳定性。 该燃烧器包括一个室，其一端具有一个圆顶，并与多个预混合器连接。 每个预混合器包括其中具有用于旋转空气的旋流器的管道和用于将燃料喷射到涡流空气中以流入燃烧室中以在其中产生燃烧火焰的多个燃料喷射器。 燃料喷射器在与圆顶不同的轴向距离上轴向分段，以将燃料从燃烧中分离以减少燃烧火焰的动态压力振幅。

    Dynamically uncoupled low NOx combustor having multiple premixers with axial staging
    6.
    发明授权
    Dynamically uncoupled low NOx combustor having multiple premixers with axial staging 失效
    具有多个具有轴向分段的预混合器的动态分离的低NOx燃烧器

    公开(公告)号：US5943866A

    公开(公告)日：1999-08-31

    申请号：US812894

    申请日：1997-03-10

    申请人： Jeffery Allan Lovett ,  Steven George Goebel

    发明人： Jeffery Allan Lovett ,  Steven George Goebel

    IPC分类号： F23R3/20 ,  F23R3/28 ,  F23R3/32 ,  F23R3/34 ,  F23R3/30

    CPC分类号： F23R3/286 ,  F23R3/32 ,  F05B2260/962 ,  F23D2210/00 ,  F23R2900/00014

    摘要： A low NOx combustor and method improve dynamic stability of a combustion flame fed by a fuel and air mixture. The combustor includes a chamber having a dome at one end thereof to which are joined a plurality of premixers. Each premixer includes a duct with a swirler therein for swirling air, and a plurality of fuel injectors for injecting fuel into the swirled air for flow into the combustion chamber to generate a combustion flame therein. The fuel injectors are axially staged at different axial distances from the dome to uncouple the fuel from combustion to reduce dynamic pressure amplitude of the combustion flame.

    摘要翻译： 低NOx燃烧器和方法提高了由燃料和空气混合物供给的燃烧火焰的动态稳定性。 该燃烧器包括一个室，其一端具有一个圆顶，并与多个预混合器连接。 每个预混合器包括其中具有用于旋转空气的旋流器的管道和用于将燃料喷射到涡流空气中以流入燃烧室中以在其中产生燃烧火焰的多个燃料喷射器。 燃料喷射器在与圆顶不同的轴向距离上轴向分段，以将燃料从燃烧中分离以减少燃烧火焰的动态压力振幅。