公开(公告)号：US20180163966A1

公开(公告)日：2018-06-14

申请号：US15821268

申请日：2017-11-22

Applicant: ROLLS-ROYCE PLC

Inventor： David I. Jones ,  Michael Whiteman ,  Daniel J. Bickley

IPC: F23R3/28 ,  F02C7/22 ,  F02C7/236 ,  F02C9/26

CPC classification number: F23R3/283 ,  F02C7/222 ,  F02C7/232 ,  F02C7/236 ,  F02C9/26 ,  F02C9/263 ,  F02C9/34 ,  F05D2260/602 ,  F05D2270/301 ,  F23D2209/30 ,  F23K5/06 ,  F23K2203/105 ,  F23R3/34 ,  Y02T50/671

Abstract: A fuel supply system for fuel injectors of a multi-stage combustor of a gas turbine engine. The fuel supply system includes a metering and splitting arrangement which receives a total fuel flow and controllably meters and splits the received total fuel flow into metered pilot and mains flows. The fuel supply system further includes a de-priming sub-system, one or more fuel lines of a mains fuel distribution pipework being fluidly connected to the mains fuel discharge orifices and extending to the de-priming sub-system, and the de-priming sub-system being configured to remove the mains fuel from the injectors. A re-priming sub-system, the one or more fuel lines of the mains fuel distribution pipework also extending to the re-priming sub-system, and the re-priming sub-system being configured to refill the injectors with mains fuel through the one or more fuel lines when the mains distribution pipework is selected for pilot and mains operation.

公开(公告)号：US10006635B2

公开(公告)日：2018-06-26

申请号：US14483787

申请日：2014-09-11

Applicant: ROLLS-ROYCE PLC ,  ROLLS-ROYCE CONTROLS AND DATA SERVICES LIMITED

Inventor： Michael Whiteman ,  Luca Romeo ,  Yong Qin ,  Paul Thornton

IPC: F23R3/28 ,  F23R3/00 ,  F02C9/34 ,  F23N5/00 ,  F23R3/34

CPC classification number: F23R3/28 ,  F02C9/34 ,  F23N5/003 ,  F23N5/006 ,  F23N2041/20 ,  F23N2900/05001 ,  F23N2900/05002 ,  F23N2900/05003 ,  F23R3/002 ,  F23R3/346

Abstract: Combustion chamber includes a primary stage fuel burner to supply fuel into a primary combustion zone and secondary stage fuel burner supplies fuel into a secondary combustion zone. A sensor is positioned downstream from combustion chamber measuring concentration of one or more compounds. The sensor sends measurements of the concentration of compounds to a processor. The processor compares the measured concentration of the compound with a first threshold value and a second threshold value. The processor supplies more fuel to the primary stage fuel burner if the measured concentration is higher than the first threshold value, supplies more fuel to the secondary stage fuel burner if the measured concentration is higher than the second threshold value, maintaining fuel supply to the primary and secondary stage fuel burners if the measured concentration is lower than the first threshold value and lower than the second threshold value.

公开(公告)号：US11041626B2

公开(公告)日：2021-06-22

申请号：US15457456

申请日：2017-03-13

Applicant: ROLLS-ROYCE plc

Inventor： Hua Wei Huang ,  Jochen Rupp ,  Michael Whiteman

IPC: F23R3/00 ,  F23R3/34 ,  F02C9/28 ,  F02C9/32 ,  F23N1/00 ,  F02C9/26 ,  F23R3/50

Abstract: A combustion chamber system has pilot and main fuel manifolds, and pilot and main fuel nozzles. Each pilot nozzle is connected to the pilot manifold. Each main nozzle is connected to the main manifold. A greater total amount of fuel is supplied to the pilot nozzles than to the main nozzles. A greater amount of fuel is supplied to pilot nozzles at, or in, a first region of the combustion chamber than to pilot fuel nozzles at, or in, a second region. A greater amount of fuel is supplied to the main nozzles at, or in, the first region than to the main nozzles at, or in, the second to improve combustion efficiency, weak extinction and relight of the combustion chamber in a first mode of operation. A greater total amount of fuel is supplied to the main nozzles than to the pilot nozzles in a second mode of operation.