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    • 7. 发明申请
    • Metering pump with self-calibration and health prediction
    • 计量泵具有自校准和健康预测
    • US20070196213A1
    • 2007-08-23
    • US11359191
    • 2006-02-22
    • Douglas ParsonsKevin Alstrin
    • Douglas ParsonsKevin Alstrin
    • F04B49/10
    • F04B51/00F04B49/065F04B2201/0803F04B2203/0201F04B2203/0209F04C14/08F04C2220/24F04C2240/81F04C2270/80F04C2270/86
    • A metering pump incorporates a method of relating inner loop current to a pump output pressure. Pump/motor speed, which correlates to current, is measured and controlled by a system controller. System temperature is also measured by the system controller. The controller monitors the measured system temperature and provides for compensation for system losses, including inductive-resistive (IR) losses, and for density and viscosity shifts, within a pre-determined allowable system temperature operating range. An initial system calibration is conducted using a “shut-off” test, where the metering pump is run at a very slow known speed while the system is shut-off. After initial start-up, a health-monitoring feature continues to monitor the current as an indicator of pump performance and continuously adjusts a motor speed to maintain a desired level of pump performance. This provides the system with the ability to compensate for performance losses, including performance losses due to variations in operating conditions, and to compensate for pump wear.
    • 计量泵结合了内部回路电流与泵输出压力相关联的方法。 与电流相关的泵/电机速度由系统控制器测量和控制。 系统温度也由系统控制器测量。 控制器监控测量的系统温度,并提供系统损耗的补偿,包括电感电阻(IR)损耗以及在预定的允许系统温度工作范围内的密度和粘度变化。 使用“关闭”测试进行初始系统校准,其中计量泵在系统关闭时以非常慢的已知速度运行。 初次启动后,健康监测功能将继续监测当前的水泵性能指标,并持续调整电机转速以保持所需的泵性能水平。 这为系统提供了补偿性能损失的能力,包括由于操作条件的变化而导致的性能损失,并补偿泵的磨损。
    • 8. 发明申请
    • Vacuum system for membrane fuel stabilization unit
    • 膜燃料稳定装置真空系统
    • US20070131110A1
    • 2007-06-14
    • US11302910
    • 2005-12-14
    • Douglas Parsons
    • Douglas Parsons
    • B01D53/22
    • F01D25/20B01D19/0036F02C7/16F02C7/22F02C7/32F05D2220/722Y02E20/18Y02T50/671Y02T50/675
    • Oil system components for a turbine engine are used to provide a vacuum system for a fuel stabilization unit (FSU). A vacuum system pulls oxygen and other contaminants from fuel into a vacuum chamber within the FSU. The vacuum system pumps the discharge through a vacuum outlet in the FSU toward a vacuum pump. Due to the quality of vacuum required, a two-stage vacuum pump is used. A first stage vacuum pump is an oil system scavenge pump for the turbine engine and the second stage vacuum is provided by a second stage vacuum pump. The discharge flows from the vacuum chamber through to the second stage vacuum pump and is then added to the oil supply. The oil and discharge mixture is sent through an oil system de-oiler and a de-aerator to clean the oil supply prior to pumping the oil back through the oil system.
    • 用于涡轮发动机的油系统部件用于为燃料稳定单元(FSU)提供真空系统。 真空系统将燃料中的氧气和其他污染物吸入FSU内的真空室。 真空系统通过FSU中的真空出口将排气泵送到真空泵。 由于需要真空的质量,所以使用两级真空泵。 第一级真空泵是用于涡轮发动机的油系清扫泵,第二级真空由第二级真空泵提供。 排放物从真空室通过到第二级真空泵,然后加到油源中。 油和排出混合物通过油系除油器和除气器送出,以在将油泵送回油系统之前清洁供油装置。
    • 9. 发明申请
    • Metering demand fuel system for gas turbine engines
    • 燃气轮机发动机计量需求燃油系统
    • US20060053803A1
    • 2006-03-16
    • US10942206
    • 2004-09-16
    • Douglas Parsons
    • Douglas Parsons
    • F02C9/26F02C7/22
    • F02C7/236F02C9/30
    • A fuel system includes a turbine engine, and an electric motor that are independently drivable relative to one another. The electric motor has a speed that is selectively controlled based upon a desired fuel flow. A centrifugal pump is driven by the turbine engine. The centrifugal pump provides a desired fuel pressure for the fuel system. A positive displacement pump is driven by the electric motor The positive displacement pump is in fluid communication with the centrifugal pump, for example in a series arrangement. The positive displacement pump meters a desired volume in response to the speed of the second drive assembly.
    • 燃料系统包括涡轮发动机和相对于彼此独立驱动的电动机。 电动机具有基于期望的燃料流量选择性地控制的速度。 离心泵由涡轮发动机驱动。 离心泵为燃料系统提供所需的燃料压力。 正排量泵由电动机驱动。正排量泵与离心泵流体连通,例如串联布置。 正排量泵响应于第二驱动组件的速度而测量所需体积。
    • 10. 发明授权
    • Microwave position sensing for a turbo machine
    • 涡轮机的微波位置检测
    • US07825669B2
    • 2010-11-02
    • US11693091
    • 2007-03-29
    • Douglas ParsonsPeter Jalbert
    • Douglas ParsonsPeter Jalbert
    • G01R27/04
    • G01S13/36G01S13/87G01S13/88
    • A microwave position sensing system includes a plurality of target components that each move between multiple positions. A microwave generator produces a microwave frequency signal. A divider receives the microwave frequency signal and splits the microwave frequency signal into a plurality of position sensing signals. The position sensing signals are respectively sent to the plurality of target components to determine a position of each of the target components. Each position sensing signal may also be calibrated. In one example, first and second frequencies are transmitted through a common wave guide. The first frequency is reflected prior to reaching the target component to produce a calibration signal. The second signal, which is used to detect the position of the target component, is calibrated using the first frequency.
    • 微波位置检测系统包括多个目标部件,每个目标部件在多个位置之间移动。 微波发生器产生微波频率信号。 分频器接收微波频率信号并将微波频率信号分解成多个位置感测信号。 位置检测信号分别发送到多个目标部件以确定每个目标部件的位置。 每个位置检测信号也可以被校准。 在一个示例中,第一和第二频率通过公共波导传输。 第一个频率在到达目标分量之前被反射以产生校准信号。 用于检测目标部件的位置的第二信号使用第一频率进行校准。