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    • 51. 发明授权
    • Flow sensing dual pump switching system and method
    • 流量传感双泵切换系统及方法
    • US08834134B2
    • 2014-09-16
    • US12972905
    • 2010-12-20
    • Carthel C. BakerDmitriy Baryshnikov
    • Carthel C. BakerDmitriy Baryshnikov
    • F04B49/00G05D7/00F02C7/236F04B23/04
    • F02C7/236F02C7/232F02C9/263F04B23/04F05D2260/606F05D2270/3015
    • A flow sensing dual pump switching system and method are provided that control the supply of fuel from a dual pump fuel system to a fuel metering unit. The system senses bypass pressure from the fuel metering unit to control the differential pressurization of the second pump. As the bypass is reduced, the pressure of the second pump is increased so that it may be added to that of the first pump to supply the increased fuel consumption needs of an engine. As the fuel consumption needs decrease, the flow from the second pump added to the first pump is reduced and the differential pressure of the second pump is similarly reduced. If the bypass pressure remains high, the switching system disconnects the output of the second pump from that of the first in favor of bypassing the flow to its input to reduce its differential pressure and conserve energy.
    • 提供一种流量检测双泵切换系统和方法,其控制从双泵燃料系统向燃料计量单元的燃料供应。 该系统感测来自燃料计量单元的旁路压力以控制第二泵的差压。 当旁路减少时,第二泵的压力增加,使得其可以被添加到第一泵的压力以提供发动机的增加的燃料消耗需求。 随着燃料消耗量的降低,加入到第一泵的第二泵的流量减少,并且第二泵的差压也同样降低。 如果旁路压力保持较高,则开关系统将第二泵的输出与第一泵的输出断开,有利于将流量旁路到其输入端,以减小其压差并节约能源。
    • 58. 发明申请
    • TURBINE NOZZLE SLASHFACE COOLING HOLES
    • 涡轮喷嘴冷却孔
    • US20120308399A1
    • 2012-12-06
    • US13151564
    • 2011-06-02
    • Evan Andrew SEWALLJames William VEHRFrederic Woodrow ROBERTS, JR.
    • Evan Andrew SEWALLJames William VEHRFrederic Woodrow ROBERTS, JR.
    • F01D25/12
    • F01D5/187F01D9/065F01D11/006F05D2240/81F05D2270/3015
    • A turbine vane or blade segment includes at least one airfoil extending radially outwardly from a radially inner band. The radially inner band is formed with substantially axially-extending side edges, and the at least one airfoil is formed with a leading edge, a trailing edge, a pressure side, a suction side, and an internal cooling plenum. The pressure side faces one of the substantially axially-extending side edges and the leading edge is located proximate to that one edge. A plurality of cooling passages are formed in the radially inner band in fluid communication with the internal plenum and exiting the inner band via a plurality of exit holes in the one of the substantially axially-extending side edges. The plurality of exit holes are confined to a region along the one of the substantially axially-extending side edges where static pressure PS along the one of the substantially axially-extending side edges lies in a pressure range, ΔPD, substantially between the stage inlet total pressures PT that is substantially about 1.5 times the dynamic pressure range ΔPD, below the stage inlet total pressure.
    • 涡轮机叶片或叶片段包括从径向内部带径向向外延伸的至少一个翼型件。 径向内带形成有基本上轴向延伸的侧边缘,并且至少一个翼型件形成有前缘,后缘,压力侧,吸力侧和内部冷却增压室。 压力侧面向大致轴向延伸的侧边缘之一,并且前缘位于该一个边缘附近。 多个冷却通道形成在径向内部带中,与内部气室流体连通并且经由大致轴向延伸的侧边缘中的一个中的多个出口孔离开内部带。 多个出口孔被限制在沿着基本上轴向延伸的侧边缘中的一个的区域中,其中沿着基本上轴向延伸的侧边缘中的一个的静态压力PS位于压力范围(Dgr; PD)之间, 入口总压力PT,基本上约为动态压力范围Dgr; PD的1.5倍,低于载物台入口总压力。
    • 60. 发明申请
    • Flow Sensing Dual Pump Switching System and Method
    • 流量传感双泵切换系统及方法
    • US20120156061A1
    • 2012-06-21
    • US12972905
    • 2010-12-20
    • Carthel C. BakerDmitriy Baryshnikov
    • Carthel C. BakerDmitriy Baryshnikov
    • F04B49/035F02C7/236F04B23/04
    • F02C7/236F02C7/232F02C9/263F04B23/04F05D2260/606F05D2270/3015
    • A flow sensing dual pump switching system and method are provided that control the supply of fuel from a dual pump fuel system to a fuel metering unit. The system senses bypass pressure from the fuel metering unit to control the differential pressurization of the second pump. As the bypass is reduced, the pressure of the second pump is increased so that it may be added to that of the first pump to supply the increased fuel consumption needs of an engine. As the fuel consumption needs decrease, the flow from the second pump added to the first pump is reduced and the differential pressure of the second pump is similarly reduced. If the bypass pressure remains high, the switching system disconnects the output of the second pump from that of the first in favor of bypassing the flow to its input to reduce its differential pressure and conserve energy.
    • 提供一种流量检测双泵切换系统和方法,其控制从双泵燃料系统向燃料计量单元的燃料供应。 该系统感测来自燃料计量单元的旁路压力以控制第二泵的差压。 当旁路减少时,第二泵的压力增加,使得其可以被添加到第一泵的压力以提供发动机的增加的燃料消耗需求。 随着燃料消耗量的降低,加入到第一泵的第二泵的流量减少,并且第二泵的差压也同样降低。 如果旁路压力保持较高,则开关系统将第二泵的输出与第一泵的输出断开,有利于将流量旁路到其输入端,以减小其压差并节约能源。