Apparatus and a method of controlling the supply of fuel to a combustion chamber
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23R-003/28
F23R-003/00
F02C-009/34
F23N-005/00
F23R-003/34
출원번호
US-0483787
(2014-09-11)
등록번호
US-10006635
(2018-06-26)
우선권정보
GB-1317175.6 (2013-09-27)
발명자
/ 주소
Whiteman, Michael
Romeo, Luca
Qin, Yong
Thornton, Paul
출원인 / 주소
ROLLS-ROYCE plc
대리인 / 주소
Oliff PLC
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
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
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.
대표청구항▼
1. A combustion chamber and an apparatus for controlling the supply of fuel to the combustion chamber, the combustion chamber comprising at least one primary stage fuel burner to supply fuel into a primary combustion zone of the combustion chamber, at least one secondary stage fuel burner to supply
1. A combustion chamber and an apparatus for controlling the supply of fuel to the combustion chamber, the combustion chamber comprising at least one primary stage fuel burner to supply fuel into a primary combustion zone of the combustion chamber, at least one secondary stage fuel burner to supply fuel into a secondary combustion zone of the combustion chamber, the apparatus comprising: a processor;at least one sensor positioned downstream of the combustion chamber, the at least one sensor being arranged to measure the concentration, or the concentration gradient, of one or more of carbon monoxide, carbon dioxide, unburned hydrocarbons, oxygen, water, nitrogen oxides, smoke, soot or particulate matter, the at least one sensor being arranged to send the measurement of the concentration or concentration gradient to the processor,the processor being arranged to compare the measured concentration or concentration gradient with a first threshold value and a second threshold value,the processor being arranged to supply more fuel to the at least one primary stage fuel burner if the measured concentration or concentration gradient is higher than the first threshold value,the processor being arranged to supply more fuel to the at least one secondary stage fuel burner if the measured concentration or concentration gradient is higher than the second threshold value, andthe processor being arranged to maintain the supply of fuel to the at least one primary stage fuel burner and to the at least one secondary stage fuel burner if the measured concentration or concentration gradient is lower than the first threshold value and is lower than the second threshold value. 2. The combustion chamber and apparatus as claimed in claim 1 wherein the processor being arranged to compare the measured concentration or concentration gradient of one or more of carbon monoxide and unburned hydrocarbons with the first threshold value,the processor being arranged to compare the measured concentration or concentration gradient of one or more of nitrogen oxides and smoke with the second threshold value,the processor being arranged to supply more fuel to the at least one primary stage fuel burner if the measured concentration or concentration gradient of one or more of carbon monoxide and unburned hydrocarbons is higher than the first threshold value,the processor being arranged to supply more fuel to the at least one secondary stage fuel burner if the measured concentration or concentration gradient of one or more of nitrogen oxides and smoke is higher than the second threshold value, andthe processor being arranged to maintain the supply of fuel to the at least one primary stage fuel burner and to the at least one secondary stage fuel burner if the measured concentration or concentration gradient of one or more of carbon monoxide and unburned hydrocarbons is lower than the first threshold value and if the measured concentration or concentration gradient of one or more of nitrogen oxides and smoke is lower than the second threshold value. 3. The combustion chamber and apparatus as claimed in claim 1 wherein the combustion chamber is a gas turbine engine combustion chamber. 4. The combustion chamber and apparatus as claimed in claim 3 wherein the at least one sensor is positioned downstream of the combustion chamber and upstream of a high pressure turbine. 5. The combustion chamber and apparatus as claimed in claim 3 wherein the at least one sensor is positioned downstream of a high pressure turbine and upstream of a low pressure turbine. 6. The combustion chamber and apparatus as claimed in claim 5 wherein the at least one sensor is positioned downstream of an intermediate pressure turbine and upstream of a low pressure turbine. 7. The combustion chamber and apparatus as claimed in claim 3 wherein the at least one sensor is positioned downstream of a low pressure turbine. 8. The combustion chamber and apparatus as claimed in claim 3 wherein the gas turbine engine is an aero gas turbine engine, a marine gas turbine engine or an industrial gas turbine engine. 9. The combustion chamber and apparatus as claimed in claim 1 wherein the gas sensor is one or more of a Lambda sensor, a chemical reaction sensor or a laser detector sensor. 10. A method controlling the supply of fuel to a combustion chamber, the combustion chamber comprising at least one primary stage fuel burner to supply fuel into a primary combustion zone of the combustion chamber, at least one secondary stage fuel burner to supply fuel into a secondary combustion zone of the combustion chamber, the method comprising: measuring the concentration, or the concentration gradient, of one or more of carbon monoxide, carbon dioxide, unburned hydrocarbons, oxygen, water, nitrogen oxides, smoke, soot and particulate matter at a position downstream of the combustion chamber,comparing the measured concentration or concentration gradient with a first threshold value and a second threshold value,supplying more fuel to the at least one primary stage fuel burner if the measured concentration or concentration gradient is higher than the first threshold value,supplying more fuel to the at least one secondary stage fuel burner if the measured concentration or concentration gradient is higher than the second threshold value; andmaintaining the supply of fuel to the at least one primary stage fuel burner and to the at least one secondary stage fuel burner if the measured concentration or concentration gradient is lower than the first threshold value and is lower than the second threshold value. 11. The method as claimed in claim 10 comprising: comparing the measured concentration or concentration gradient of one or more of carbon monoxide and unburned hydrocarbons with the first threshold value,comparing the measured concentration or concentration gradient of one or more of nitrogen oxides and smoke with the second threshold value,supplying more fuel to the at least one primary stage fuel burner if the measured concentration or concentration gradient of one or more of carbon monoxide and unburned hydrocarbons is higher than the first threshold value,supplying more fuel to the at least one secondary stage fuel burner if the measured concentration or concentration gradient of one or more of nitrogen oxides and smoke is higher than the second threshold value, andmaintaining the supply of fuel to the at least one primary stage fuel burner and to the at least one secondary stage fuel burner if the measured concentration or concentration gradient of one or more of carbon monoxide and unburned hydrocarbons is lower than the first threshold value and if the measured concentration or concentration gradient of one or more of nitrogen oxides is lower than the second threshold value. 12. The method as claimed in claim 10 wherein the combustion chamber is a gas turbine engine combustion chamber. 13. The method as claimed in claim 12 comprising measuring the concentration, or the concentration gradient, of one or more of carbon monoxide, carbon dioxide, unburned hydrocarbons, oxygen, water, nitrogen oxides, smoke, soot and particulate matter at a position downstream of the combustion chamber and upstream of a high pressure turbine. 14. The method as claimed in claim 12 comprising measuring the concentration, or the concentration gradient, of one or more of carbon monoxide, carbon dioxide, unburned hydrocarbons, oxygen, water, nitrogen oxides, smoke, soot and particulate matter at a position downstream of a high pressure turbine and upstream of a low pressure turbine. 15. The method as claimed in claim 14 comprising measuring the concentration, or the concentration gradient, of one or more of carbon monoxide, carbon dioxide, unburned hydrocarbons, oxygen, water, nitrogen oxides, smoke, soot and particulate matter at a position downstream of an intermediate pressure turbine and upstream of a low pressure turbine. 16. The method as claimed in claim 12 comprising measuring the concentration, or the concentration gradient, of one or more of carbon monoxide, carbon dioxide, unburned hydrocarbons, oxygen, water, nitrogen oxides, smoke, soot and particulate matter at a position downstream of a low pressure turbine. 17. The method as claimed in claim 12 wherein the gas turbine engine is an aero gas turbine engine, a marine gas turbine engine or an industrial gas turbine engine. 18. The method as claimed in claim 10 comprising measuring the concentration, or the concentration gradient, of one or more of carbon monoxide, carbon dioxide, unburned hydrocarbons, oxygen, water, nitrogen oxides, smoke, soot and particulate matter using one or more of a Lambda sensor, a chemical reaction sensor or a laser detector sensor.
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이 특허에 인용된 특허 (20)
Chandler, Christopher, Automated tuning of multiple fuel gas turbine combustion systems.
Willis Jeffrey D,GBX, Gas turbine engine combustion chamber having premixed homogeneous combustion followed by catalytic combustion and a method of operation thereof.
Amond, III,Thomas Charles; Crawley,Bradley Donald; Chandrashekar,Natesh; Nagarajan,Balan; Feigl Varela,Rebecca Arlene, Methods and apparatus for low emission gas turbine energy generation.
Chandler, Christopher, Optimization of gas turbine combustion systems low load performance on simple cycle and heat recovery steam generator applications.
Lindner Jeffrey S. (Starkville MS) Shepard W. Steve (Starkville MS) Etheridge John A. (Starkville MS) Jang Ping-Rey (Starkville MS) Gresham Lawrence L. (Starkville MS), Real-time combustion controller.
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