公开(公告)号：US10006374B2

公开(公告)日：2018-06-26

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 ,  F01D17/16 ,  F02C9/20 ,  F02C9/54 ,  F02C6/00 ,  F02C7/36

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.

公开(公告)号：US10890083B2

公开(公告)日：2021-01-12

申请号：US15133883

申请日：2016-04-20

Applicant: ROLLS-ROYCE plc

Inventor： Arthur Laurence Rowe ,  Marko Bacic

IPC: F01D11/24 ,  F01D21/12 ,  F01D21/14

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.

公开(公告)号：US09404385B2

公开(公告)日：2016-08-02

申请号：US13658411

申请日：2012-10-23

Applicant: ROLLS-ROYCE PLC

Inventor： Arthur Laurence Rowe

IPC: F01D21/00 ,  F01D17/06 ,  F01D17/04 ,  F01D21/14 ,  G01M15/14

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。