公开(公告)号：US20160010494A1

公开(公告)日：2016-01-14

申请号：US14743701

申请日：2015-06-18

Applicant: ROLLS-ROYCE PLC

Inventor： Mark Nicholas ERLUND ,  Arthur Laurence ROWE

IPC: F01D21/00 ,  G01H1/00 ,  G01H1/10 ,  F02C9/28

CPC classification number: F01D21/003 ,  F02C9/28 ,  F05D2220/32 ,  F05D2260/83 ,  F05D2270/05 ,  F05D2270/331 ,  F05D2270/334 ,  F05D2270/335 ,  F05D2270/44 ,  F05D2270/71 ,  G01H1/006 ,  G01H1/10 ,  G01L3/04 ,  G01M15/14

Abstract: A method to determine shaft stiffness of a rotating shaft, the shaft coupling a turbine to drive the rotation and a load to be driven by the rotation. For a given operational temperature and rotational speed of the shaft, the method including steps to determine polar moments of inertia of the load and the turbine. Determine natural torsional vibration frequency of the shaft. Determine the shaft stiffness by calculation using the inertias and vibration frequency.

Abstract translation: 一种确定旋转轴的轴刚度的方法，所述轴联接涡轮以驱动旋转和由旋转驱动的负载。 对于给定的轴的工作温度和转速，该方法包括确定负载和涡轮的极坐标惯性矩的步骤。 确定轴的自然扭转振动频率。 通过使用惯性和振动频率计算确定轴刚度。

公开(公告)号：US20160326901A1

公开(公告)日：2016-11-10

申请号：US15133883

申请日：2016-04-20

Applicant: ROLLS-ROYCE plc

Inventor： Arthur Laurence ROWE ,  Marko BACIC

IPC: F01D11/24

CPC classification number: F01D11/24 ,  F01D21/12 ,  F01D21/14 ,  F05D2270/021 ,  F05D2270/112 ,  F05D2270/303 ,  F05D2270/304 ,  F05D2270/705

Abstract: A method of controlling turbine tip clearance includes measuring turbine speed; measuring turbine temperature; measuring parameters indicative of current operating conditions; determining limits for the turbine speed and turbine temperature; calculating target tip clearance from the turbine speed, turbine temperature and parameters, to optimise turbine efficiency within the turbine speed and turbine temperature limits; and controlling turbine tip clearance apparatus to the calculated target tip clearance.

Abstract translation: 控制涡轮机顶端间隙的方法包括测量涡轮机速度; 测量涡轮机温度; 测量指示当前操作条件的参数; 确定涡轮机转速和涡轮机温度的限制; 从涡轮转速，涡轮机温度和参数计算目标叶尖间隙，以优化涡轮机转速和涡轮机温度极限内的涡轮机效率; 以及将涡轮机顶端间隙装置控制到所计算的目标顶端间隙。

公开(公告)号：US20150308353A1

公开(公告)日：2015-10-29

申请号：US14688423

申请日：2015-04-16

Applicant: ROLLS-ROYCE PLC

Inventor： Alasdair GARDNER ,  Arthur Laurence ROWE ,  Mark David TAYLOR ,  Nicholas HOWARTH

IPC: F02C9/22 ,  F02C7/36 ,  F02C6/00

CPC classification number: F02C9/22 ,  F01D17/162 ,  F02C6/00 ,  F02C7/36 ,  F02C9/20 ,  F02C9/54 ,  F05D2220/32 ,  F05D2220/76 ,  F05D2270/05 ,  F05D2270/06 ,  F05D2270/303 ,  F05D2270/304 ,  Y02T50/671

Abstract: An engine that has, in axial flow series, booster compressor, core compressor, combustion equipment, core turbine, and low-pressure turbine. Core turbine drives core compressor via an interconnecting high-pressure shaft. Low-pressure turbine drives booster compressor via an interconnecting low-pressure shaft. Low-pressure turbine also drives external load having a defined speed characteristic that dictates speed of the low-pressure turbine and booster compressor. Booster compressor has one or more rows of variable stator vanes. The method includes: scheduling variation in the angle of variable stator vanes as a function of speed of the booster compressor wherein the vanes open as booster compressor speed increases; measuring or setting one or more operational parameters which are determinative of temperature at entry to core turbine; and biasing scheduling of angle variation of variable stator vanes as a function of operational parameter(s) to reduce variation in temperature at entry to core turbine.

Abstract translation: 具有轴流式系列的增压压缩机，核心压缩机，燃烧设备，核心涡轮机和低压涡轮机的发动机。 核心涡轮机通过互连的高压轴驱动核心压缩机。 低压涡轮机通过互连低压轴驱动增压压缩机。 低压涡轮机还驱动具有限定低速涡轮机和增压压缩机的速度的限定速度特性的外部负载。 增压压缩机具有一排或多排可变定子叶片。 该方法包括：根据增压压缩机的速度调整可变定子叶片的角度变化，其中当增压压缩机转速增加时叶片打开; 测量或设定一个或多个确定进入核心涡轮机时的温度的操作参数; 并且可变定子叶片的角度变化的偏置调度作为操作参数的函数，以减少进入核心涡轮机时的温度变化。

公开(公告)号：US20130152600A1

公开(公告)日：2013-06-20

申请号：US13658411

申请日：2012-10-23

Applicant: ROLLS-ROYCE PLC

Inventor： Arthur Laurence ROWE

IPC: F02C7/00

CPC classification number: F01D21/00 ,  F01D17/04 ,  F01D17/06 ,  F01D21/14 ,  F05D2270/091 ,  F05D2270/304 ,  G01M15/14

Abstract: A method to detect shaft break includes monitoring first and second parameters and defining a two-dimensional parameter space that is a function of the first and second parameters, the two-dimensional parameter space includes integration regions. The method also includes defining an integration function for each integration region. For measured values of the first and second parameters, the method determines the applicable integration region and applies the integration function to the first parameter to give an integration result; and then sets a shaft break signal to TRUE when the integration result exceeds a predetermined threshold. The present invention also provides a shaft break detection system.

Abstract translation: 检测轴断裂的方法包括监视第一和第二参数并定义作为第一和第二参数的函数的二维参数空间，二维参数空间包括积分区域。 该方法还包括为每个积分区域定义积分函数。 对于第一和第二参数的测量值，该方法确定适用的积分区域，并将积分函数应用于第一参数以给出积分结果; 然后当积分结果超过预定阈值时，将轴断裂信号设置为TRUE。 本发明还提供一种轴断裂检测系统。