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    • 83. 发明申请
    • TIP CLEARANCE CONTROL METHOD
    • 提示间隙控制方法
    • US20150016949A1
    • 2015-01-15
    • US14305437
    • 2014-06-16
    • ROLLS-ROYCE PLC
    • Marcus Donegan Wood SMITH
    • F01D11/24F01D21/00
    • F01D11/24F01D21/003F01D25/14F05D2270/303F05D2270/71F05D2270/80F05D2300/5021Y02T50/675
    • A method of controlling tip clearance of rotor blades from a surrounding casing in a gas turbine engine. The method comprising the steps of performing a first run of the gas turbine engine, shutting down the gas turbine engine and starting the gas turbine engine for a second run. The method further comprises measuring at least one performance parameter during or after the first engine run but before a time selected at which air within the gas turbine engine, soaked to the approximate temperature of one or more surrounding engine components, is substantially displaced as a consequence of the second run. The thermal condition of at least part of the engine in accordance with the measured performance parameters is then recorded. Finally the recorded thermal condition is retrieved and the temperature of the casing is controlled during at least part of the second run in a manner dependent on it.
    • 一种控制燃气涡轮发动机中的周围壳体的转子叶片的顶端间隙的方法。 该方法包括以下步骤:执行燃气涡轮发动机的第一次运行,关闭燃气涡轮发动机并启动燃气涡轮发动机进行第二次运行。 该方法还包括在第一发动机运行期间或之后但在被选择的时间之前测量至少一个性能参数,该时间被选定为燃烧在一个或多个周围发动机部件的大致温度内的燃气涡轮发动机内的空气被大大地移位 的第二次跑步。 然后记录根据测量的性能参数的至少部分发动机的热条件。 最后,记录的热条件被检索,并且壳体的温度在第二次运行的至少部分期间以取决于其的方式被控制。
    • 85. 发明申请
    • DIRECT DRIVE FAN SYSTEM WITH VARIABLE PROCESS CONTROL
    • 具有可变过程控制的直接驱动风扇系统
    • US20140244051A1
    • 2014-08-28
    • US14352050
    • 2012-10-21
    • PRIME DATUM, INC.
    • Patrick RollinsGeorge LucasJoseph Costello
    • G05D27/02
    • G05D27/02B01F3/04078F04D19/002F04D25/0606F04D27/004F05D2220/766F05D2220/768F05D2260/20F05D2260/70F05D2260/821F05D2260/96F05D2270/3011F05D2270/306F05D2270/44F05D2270/71F28C1/00Y02B30/748Y02P80/156Y02T50/675
    • The present invention is directed to a direct-drive fan system and a variable process control system for efficiently managing the operation of fans in a cooling system such a as wet-cooling tower or air-cooled heat exchanger (ACHE), HVAC systems, mechanical towers or chiller systems. The present invention is based on the integration of key features and characteristics such as tower thermal performance, fan speed and airflow, motor torque, fan pitch, fan speed, fan aerodynamic properties, and pump flow. The variable process control system processes feedback signals from multiple locations in order control a high torque, variable speed, permanent magnet motor to drive the fan. Such feedback signals represent certain operating conditions including motor temperature, basin temperature, vibrations, and pump flow rates. Other data processed by the variable process control system in order to control the motor include turbine back pressure set-point, condenser temperature set-point and plant part-load setting. The variable process control system processes this data and the aforesaid feedback signals to optimize the operation of the cooling system in order to prevent disruption of the industrial process and prevent equipment (turbine) failure or trip. The variable process control system alerts the operators for the need to conduct maintenance actions to remedy deficient operating conditions such as condenser fouling. The variable process control system increases cooling for cracking crude and also adjusts the motor RPM, and hence the fan RPM, accordingly during plant part-load conditions in order to save energy.
    • 本发明涉及一种直接驱动风扇系统和可变过程控制系统,用于有效地管理诸如湿式冷却塔或风冷式热交换器(ACHE),HVAC系统,机械式 塔或冷却器系统。 本发明基于塔式热性能,风扇速度和气流,电机转矩,风扇间距,风扇转速,风扇空气动力特性和泵流量等关键特性和特点的集成。 可变过程控制系统处理来自多个位置的反馈信号,以便控制高扭矩,可变速度的永磁电动机来驱动风扇。 这种反馈信号表示某些操作条件,包括电机温度,盆温度,振动和泵流量。 由可变过程控制系统处理以控制电动机的其他数据包括涡轮机背压设定点,冷凝器温度设定点和设备部分负载设置。 可变过程控制系统处理这些数据和上述反馈信号,以优化冷却系统的运行,以防止工业过程中断,并防止设备(涡轮)故障或跳闸。 可变过程控制系统警告操作者需要进行维护操作以补救诸如冷凝器结垢的不良操作条件。 可变过程控制系统增加了用于裂解原油的冷却,并且在工厂部分负载条件下相应地调节电动机RPM,并因此调整风扇RPM,以节省能源。