Apparatus and method for controlling a pressure gain combustor

    公开(公告)号:US10451275B2

    公开(公告)日:2019-10-22

    申请号:US14114697

    申请日:2012-04-27

    Abstract: A method of controlling operation of a pressure gain combustor comprises: determining a fuel injector duty cycle and a combustion frequency that meets a target load set point and a target fill fraction of the combustor; determining a fuel supply pressure setting, a fuel injector timing setting and an ignition timing setting that achieves the determined fuel injector duty cycle and combustion frequency; and sending a fuel supply pressure control signal with the fuel supply pressure setting to a fuel pressurizing means of the combustor, a fuel injector control signal with the fuel injector timing setting to a fuel injector of the combustor, and an ignition timing control signal with the ignition timing setting to an ignition assembly of the combustor.

    Spherical involute gear coupling
    13.
    发明授权
    Spherical involute gear coupling 有权
    球面渐开线齿轮联轴器

    公开(公告)号:US08887592B2

    公开(公告)日:2014-11-18

    申请号:US13467628

    申请日:2012-05-09

    CPC classification number: F04C2/084 F04C3/08 F16D3/185 Y10T74/1966

    Abstract: Disclosed herein are several embodiments of rotors (gears) which utilize spherical involute curves to determine the surfaces of the lobes (teeth). In some embodiments the contact surfaces are radial projections of spherical involute surfaces. In other embodiments the contact surfaces have a root and/or tip of a spherical involute curve, but are barreled or otherwise curved to reduce the point stress on each rotor. The rotors may also be configured where torque transfer is provided at a first set of lobes (teeth) and backlash removal is provided on teeth radially opposed to the first set of lobes (teeth). As the apparatus rotates, the position of torque transfer remains substantially the same, as does backlash prevention/removal, but the teeth providing these operations vary. The rotors may also be used for fluid flow.

    Abstract translation: 本文公开了使用球形渐开线曲线来确定凸角(齿)的表面的转子(齿轮)的若干实施例。 在一些实施例中,接触表面是球形渐开线表面的径向突起。 在其他实施例中,接触表面具有球形渐开线曲线的根部和/或尖端,但是被套管或以其它方式弯曲以减小每个转子上的点应力。 转子还可以被配置成在第一组叶片(齿)处提供扭矩传递,并且在与第一组叶片(齿)径向相对的齿上提供齿隙移除。 当设备旋转时,转矩传递的位置保持基本相同,防止/去除齿隙,但提供这些操作的齿不同。 转子也可用于流体流动。

    Hydrodynamic bore seal
    14.
    发明授权
    Hydrodynamic bore seal 有权
    流体动力孔密封

    公开(公告)号:US08740225B2

    公开(公告)日:2014-06-03

    申请号:US12792162

    申请日:2010-06-02

    CPC classification number: F01D11/02 F16J15/441 F16J15/54

    Abstract: The disclosed finger seals are designed to be operational under rotational velocity or a stationary condition. The contact surface of the finger seals is inclined in an axial direction. The rotational velocity of the bore does not affect the hydrodynamic lift and the finger seals can operate at any rotational speed, unlike prior finger seal where the hydrodynamic lift is generated by rotational velocity. Each finger seal is pressure balanced. The pressure chambers on the two sides of each finger seal are connected through the finger cutouts. The finger seal design is such that the fingers lift and move away from the bore surface in radial direction. In one form, each finger seal is designed with the specific required length to allow sufficient surface area for the hydrodynamic force such that the finger seals would be lifted from the bore surface at the design pressure.

    Abstract translation: 所公开的手指密封件设计成在旋转速度或静止状态下可操作。 手指密封件的接触表面沿轴向倾斜。 孔的旋转速度不影响流体动力升力,并且手指密封可以以任何转速操作,这与先前的手指密封不同,其中流体动力升力由旋转速度产生。 每个手指密封是压力平衡的。 每个手指密封件两侧的压力室通过手指切口连接。 手指密封设计使得手指在径向方向上抬起并远离孔表面移动。 在一种形式中,每个指状密封件被设计成具有特定的所需长度,以允许足够的流体力学表面积,使得手指密封件将在设计压力下从孔表面提升。

    Multiphase pump with high compression ratio
    16.
    发明授权
    Multiphase pump with high compression ratio 有权
    多相泵具有高压缩比

    公开(公告)号:US08562318B1

    公开(公告)日:2013-10-22

    申请号:US12853200

    申请日:2010-08-09

    CPC classification number: F04C2/08 F04C2/24 F04C15/06 F04C2210/24

    Abstract: This disclosure relates to a new multiphase pump with low recirculated volume. This device discloses novel inlet/outlet porting. One of the disclosed improvements is to port the inlet and outlet through the back of the rotors. In the model shown there is only one lobe on the first rotor, and two lobes on the second rotor. The double lobe rotor has the ports provided thru the back, in the lowest point on the buckets between the lobes. If there were more lobes on the two rotors, then the ports would normally be provided in the rotor with the higher number of lobes, preferably in the lowest point on each bucket. The single lobe rotor shown has voids formed in the outer circumference in order to balance the rotor—however, any rotor with more than one lobe may be naturally balanced and these holes may be unnecessary.

    Abstract translation: 本公开涉及一种具有低再循环体积的新型多相泵。 该装置公开了新颖的入口/出口端口。 所公开的改进之一是将进口和出口通过转子的后部。 在所示的模型中,第一转子上只有一个叶片,第二个转子上有两个叶片。 双叶转子具有通过后面提供的端口,位于叶片之间的桶的最低点。 如果在两个转子上有更多的叶片,则通常在转子中提供较高数量的叶片,优选地在每个铲斗的最低点处。 所示的单叶转子为了平衡转子而形成在外圆周上的空隙,然而,具有多于一个凸角的任何转子可以自然地平衡,并且这些孔可能是不必要的。

    Positive Displacement Expander
    17.
    发明申请
    Positive Displacement Expander 有权
    正位移扩张器

    公开(公告)号:US20130200634A1

    公开(公告)日:2013-08-08

    申请号:US13720084

    申请日:2012-12-19

    Abstract: Provided herein are multiple variations, applications, and variations for producing electrical power from a flowing fluid such as a gas or liquid under pressure, for example natural gas flowing through a pipeline, by means of one or more positive displacement devices that drive one or more electrical generators. The electrical generators may be immersed in the flow stream together with the positive displacement devices as disclosed, or alternately may be isolated from the flow stream, such as by magnetic coupling, in order to promote longevity and to decrease the risk of accidental discharge or explosion of the fluid in the flow stream. To further decrease such risks, the positive displacement devices may isolate the drive fluid from the environment without the use of dynamic seals.

    Abstract translation: 本文提供了多种变化,应用和变化,用于通过一个或多个驱动一个或多个位置的正位移装置从流动的流体(例如压力下的气体或液体,例如流过管道的天然气)产生电力 发电机 发电机可以与所公开的正位移装置一起浸入流动流中,或者可以例如通过磁耦合与流动流隔离,以促进寿命并降低意外排放或爆炸的风险 的流体中的流体。 为了进一步减少这种风险,正排量装置可以将驱动流体与环境隔离,而不使用动态密封。

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