Method and device for minimizing thermoacoustic vibrations in gas-turbine combustion chambers
    1.
    发明授权
    Method and device for minimizing thermoacoustic vibrations in gas-turbine combustion chambers 失效
    用于最小化燃气轮机燃烧室中的热声振动的方法和装置

    公开(公告)号:US06170265B2

    公开(公告)日:2001-01-09

    申请号:US09111869

    申请日:1998-07-08

    IPC分类号: F02C724

    摘要: In a gas turbine having a device for the fuel injection, which injects fuel into a mixing device (12), the injected fuel being mixed with combustion air in the mixing device (12), and in which the gas turbine also has a combustion chamber (16) arranged downstream of the mixing device (12), the length of the combustion chamber being LBK and the length of the mixing device being LMix, in order to suppress thermoacoustic vibrations the premix combustion chamber (10) containing the combustion chamber (16) and the mixing device (12) is designed in such a way that an acoustic pressure fluctuation which occurs in the premix combustion chamber (10) at the combustion-chamber outlet (20) is superimposed in phase opposition on an entropy-wave-induced pressure fluctuation at a certain frequency to be damped.

    摘要翻译: 在具有将燃料喷射到混合装置(12)中的用于燃料喷射的装置的燃气轮机中,喷射的燃料与混合装置(12)中的燃烧空气混合,并且其中燃气涡轮机还具有燃烧室 (16),布置在混合装置(12)的下游,燃烧室的长度为LBK,混合装置的长度为LMix,以便抑制含有燃烧室(16)的预混燃烧室(10)的热声振动 ),并且混合装置(12)被设计成使得在燃烧室出口(20)处的预混合燃烧室(10)中发生的声压波动相对于熵波引起的 压力波动在一定频率被阻尼。

    Method for combustion of a liquid fuel in a combustion system, and a combustion system for carrying out the method
    3.
    发明授权
    Method for combustion of a liquid fuel in a combustion system, and a combustion system for carrying out the method 失效
    燃烧系统中的液体燃料的燃烧方法和用于实施该方法的燃烧系统

    公开(公告)号:US06336806B1

    公开(公告)日:2002-01-08

    申请号:US09615950

    申请日:2000-07-13

    IPC分类号: F23D1132

    CPC分类号: F23D11/32 F23D2210/00

    摘要: In a method for burning a liquid fuel in a combustion system (10) which comprises a combustion chamber (11) and at least one injection nozzle (13) through which liquid fuel is injected into the combustion chamber (11) in the form of a fuel spray (16) and is burnt there with combustion air being added, disturbance-free operation in a simple manner is distinguished in that, in order to actively suppress hydrodynamic instabilities in the combustion chamber (11), the injected fuel spray (16) is modulated by having an electrical voltage applied to it during the injection process, governed by a selected time function.

    摘要翻译: 在用于燃烧燃料系统(10)中的液体燃料的方法中,所述燃烧系统(10)包括燃烧室(11)和至少一个喷射喷嘴(13),液体燃料通过该燃料室喷射到燃烧室(11)中, 燃料喷雾(16),并在其上燃烧有燃烧空气,其区别在于无扰动操作的特征在于为了主动地抑制燃烧室(11)中的流体动力学不稳定性,喷射的燃料喷雾(16) 通过在注入过程期间施加电压而被调制,由所选时间函数控制。

    Apparatus for damping acoustic vibrations in a combustor
    5.
    发明授权
    Apparatus for damping acoustic vibrations in a combustor 有权
    用于抑制燃烧器中的声振动的装置

    公开(公告)号:US06634457B2

    公开(公告)日:2003-10-21

    申请号:US09864395

    申请日:2001-05-25

    IPC分类号: F02M3500

    摘要: An apparatus for damping acoustic vibrations in a combustor as well as a corresponding combustor arrangement with the apparatus. The apparatus includes a Helmholtz resonator (4) that can be connected via a connecting channel (2) with a combustor (1). The Helmholtz resonator (4) contains a hollow body (6) the volume of which can be changed by adding or draining a fluid via a supply line (5), or is located adjacent to such a hollow body in such a way that the resonance volume (3) of the Helmholtz resonator (4) is changed when the volume of the hollow body (6) is changed. This apparatus makes it possible to adjust the resonance frequency of a Helmholtz resonator arranged inside a pressure container in accordance with the respective current operating point of the combustor to be damped, without having to pass movable components through the pressure container.

    摘要翻译: 一种用于抑制燃烧器中的声振动以及与该装置相应的燃烧器装置的装置。 该装置包括可经由连接通道(2)与燃烧器(1)连接的亥姆霍兹共振器(4)。 亥姆霍兹共振器(4)包含中空体(6),其体积可以通过经由供应管线(5)添加或排出流体而改变,或者位于这样的中空体附近,使得共振 当中空体(6)的体积改变时,亥姆霍兹共振器(4)的体积(3)改变。 该装置使得可以根据要抑制的燃烧器的相应的当前工作点来调节设置在压力容器内的亥姆霍兹共振器的谐振频率,而不必通过可移动部件通过压力容器。

    Gas turbine combustion chamber with two stages and enhanced acoustic
properties
    6.
    发明授权
    Gas turbine combustion chamber with two stages and enhanced acoustic properties 失效
    燃气轮机燃烧室具有两级和增强的声学特性

    公开(公告)号:US6050078A

    公开(公告)日:2000-04-18

    申请号:US965865

    申请日:1997-11-07

    CPC分类号: F23R3/42 F23R3/16 F05B2260/96

    摘要: In a combustion chamber, the hot gases are prepared sequentially via two stages (20, 40). Arranged at the end of the first stage (20) in the direction of flow is a cross-sectional constriction (30) via which the hot gases (21) prepared in the first stage (20) are passed over into the second stage (40). The Mach number at the outlet (31) of this cross-sectional constriction (30) corresponds to the area ratio of outlet area (A2) over inlet area (A1). This results in a low-reflection configuration in which low-frequency vibrations are absorbed to a significant extent. And acoustic energy reflected from the turbine is substantially reduced.

    摘要翻译: 在燃烧室中,依次通过两个阶段(20,40)制备热气体。 在第一阶段(20)结束时在流动方向上排列的是横截面收缩(30),第一阶段(20)中制备的热气体(21)通过该横截面收缩通过第二阶段(40) )。 该截面缩颈(30)的出口(31)处的马赫数对应于出口面积(A2)与入口面积(A1)的面积比。 这导致低反射配置,其中低频振动被很大程度地吸收。 并且从涡轮机反射的声能大大减小。

    Burner for operating an internal combustion engine, a combustion chamber
of a gas turbine group or firing installation
    7.
    发明授权
    Burner for operating an internal combustion engine, a combustion chamber of a gas turbine group or firing installation 失效
    用于操作内燃机的燃烧器,燃气轮机组的燃烧室或点火装置

    公开(公告)号:US5375995A

    公开(公告)日:1994-12-27

    申请号:US181438

    申请日:1994-01-14

    CPC分类号: F23D17/002 F23C2900/07002

    摘要: In a double-cone burner, at least one row of nozzles (10) for a gaseous fuel containing highly reactive components and having a medium calorific value are arranged on the periphery of the partial conical bodies (1, 2) of the burner near the burner outlet at a distance of approximately 30% of the nominal burner diameter. In addition, there is a fuel conduit (11) and a distributing passage (17), placed in the region of the nozzles (10), for the highly reactive fuel. The gaseous fuel (15) containing highly reactive components is injected at high velocity through the nozzles (10), which have a diameter which is smaller than 1% of the nominal burner diameter, into the zones of high air velocity and the penetration depth and the direction of the fuel jets are matched to one another in such a way that ignition only takes place behind the burner, after mixing has occurred.

    摘要翻译: 在双锥形燃烧器中,用于含有高反应性组分并具有中等热值的气态燃料的至少一排喷嘴(10)布置在燃烧器附近的燃烧器的部分圆锥体(1,2)的周边上 燃烧器出口距离标称燃烧器直径的约30%。 此外,在喷嘴(10)的区域中,存在用于高反应性燃料的燃料导管(11)和分配通道(17)。 含有高反应性组分的气体燃料(15)通过直径小于标称燃烧器直径的1%的喷嘴(10)以高速喷射到高空气速度和穿透深度的区域中, 燃料喷嘴的方向彼此匹配,使得在发生混合之后点燃仅发生在燃烧器后面。

    Arrangement for damping combustion-chamber oscillations
    10.
    发明授权
    Arrangement for damping combustion-chamber oscillations 失效
    阻尼燃烧室振荡的布置

    公开(公告)号:US6164058A

    公开(公告)日:2000-12-26

    申请号:US111779

    申请日:1998-07-08

    摘要: In an annular combustion chamber for a gas turbine, a combustion-chamber dome (14) is arranged upstream of an air-cooled combustion chamber (10). A first portion of an air flow (46) which comes from the compressor is admixed as combustion air to the combustion operation and cooling ducts (22; 24) feed a second portion of the air flow (46) coming from the compressor as cooling air into the combustion chamber (10). In this case, the cooling ducts (22; 24), which run at least in sections along the combustion chamber (10), have an entry (23; 25) into the combustion-chamber dome (14). The cooling ducts (22; 24) are designed for damping combustion-chamber oscillations in such a way that the acoustic impedance at the entry (23; 25) of the cooling ducts (22; 24) into the combustion-chamber dome (14) is minimized.

    摘要翻译: 在用于燃气轮机的环形燃烧室中,燃烧室拱顶(14)布置在空气冷却燃烧室(10)的上游。 将来自压缩机的空气流(46)的第一部分作为燃烧空气混合到燃烧操作中,冷却管道(22; 24)将来自压缩机的空气流(46)的第二部分作为冷却空气 进入燃烧室(10)中。 在这种情况下,至少沿着燃烧室(10)的部分运行的冷却管道(22; 24)具有进入燃烧室拱顶(14)的入口(23; 25)。 冷却管道(22; 24)设计成用于阻止燃烧室振荡,使得冷却管道(22; 24)入口(23; 25)入口(29; 25)内的声阻抗进入燃烧室穹顶(14) 被最小化。