Method and system for thermal expansion compensation in heated flow characterization
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-009/00
G01M-015/14
출원번호
US-0856728
(2015-09-17)
등록번호
US-9581087
(2017-02-28)
발명자
/ 주소
DeSilva, Upul P.
Claussen, Heiko
출원인 / 주소
Siemens Energy, Inc.
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
Techniques for a chamber, such as gas turbine engine (100), surrounding a heated fluid include a sensor (150) mounted in a first wall (228b, 229b) of the chamber to detect phenomenon inside the chamber and a processor (702). The processor is in electrical communication with the sensor and is configu
Techniques for a chamber, such as gas turbine engine (100), surrounding a heated fluid include a sensor (150) mounted in a first wall (228b, 229b) of the chamber to detect phenomenon inside the chamber and a processor (702). The processor is in electrical communication with the sensor and is configured to receive first data, determine a first temperature of the first wall, determine a current path length, determine properties of the fluid flow, and operate a device based on the properties. First data indicates a value of the phenomenon along a path between the first wall and a different wall of the chamber. The current path length (268b) is based on a nominal path length (268a) and thermal expansion of the first wall due to the first temperature. The property of fluid flow in the chamber is based on the first data and the current path length.
대표청구항▼
1. A system comprising: a chamber configured to surround a heated fluid;a sensor mounted in a first wall of the chamber to detect a phenomenon in the chamber;a device affected by a property of the heated fluid; anda processor in electrical communication with the sensor, the processor configured to p
1. A system comprising: a chamber configured to surround a heated fluid;a sensor mounted in a first wall of the chamber to detect a phenomenon in the chamber;a device affected by a property of the heated fluid; anda processor in electrical communication with the sensor, the processor configured to perform at least the steps of: receiving from the sensor first data that indicates a value for the phenomenon along a path through the chamber between the first wall and a different wall of the chamber,determining a first temperature of the first wall;determining a current path length of the path based at least in part on a nominal path length for a nominal temperature different from the first temperature and thermal expansion of the first wall due to the first temperature;determining a property of fluid flow in the chamber based on the first data and the current path length of the path; andoperating the device based on the property of fluid flow in the chamber. 2. A system as recited in claim 1, wherein: the chamber is at least one of a combustor in a gas turbine engine or an exhaust diffuser in a gas turbine engine;the sensor is an acoustic sensor;the phenomenon is acoustic travel time; andthe property is temperature or velocity or both. 3. A system as recited in claim 1, wherein: the sensor is at a first distance from a nearest structural support for the chamber; anddetermining the current path length further comprises determining the current path length of the path based at least in part on the first distance. 4. A system as recited in claim 1 wherein determining the first temperature further comprises determining the first temperature based on the first data and the nominal path length. 5. A system as recited in claim 1 further comprising a first temperature sensor in thermal contact with the first wall, wherein: the processor is further configured for receiving from the first temperature sensor second data that indicates a temperature of the first wall; anddetermining the first temperature further comprises determining the first temperature equal to the temperature of the first wall based on the second data. 6. A system as recited in claim 5, wherein: the first wall comprises an inner plate and an outer plate separated by an thermally insulating material;the sensor is mounted to both the inner plate and the outer plate;the system further comprises a second temperature sensor;the first temperature sensor is disposed in thermal contact with the inner plate;the second temperature sensor is disposed in thermal contact with the outer plate;the first temperature is the temperature of the inner plate of the first wall;the processor is further configured for receiving from the second temperature sensor third data that indicates a second temperature of the outer plate of the first wall; anddetermining the current path length further comprises determining the current path length based on a difference between the thermal expansion of the inner plate of the first wall due to the first temperature and thermal expansion of the outer plate of the first wall due to the second temperature. 7. A system as recited in claim 5, wherein: a sensitivity of the sensor depends on temperature;the system further comprises a second temperature sensor disposed in thermal contact with the sensor;the processor is further configured for receiving from the second temperature sensor third data that indicates a second temperature of the sensor; anddetermining the property of the fluid flow in the chamber further comprises determining the property of the fluid flow in the chamber based on the second temperature of the sensor. 8. A system as recited in claim 5, wherein: the sensor is an acoustic transducer mounted in an acoustic waveguide in the first wall which opens into an inside of the chamber and for which the acoustic path depends on temperature;the system further comprises a second temperature sensor disposed in thermal contact with the acoustic waveguide;the processor is further configured for receiving from the second temperature sensor third data that indicates a second temperature of the acoustic waveguide; anddetermining the current path length further comprises determining the current path length based on the second temperature of the acoustic waveguide. 9. A method comprising: receiving on a processor, from a sensor mounted in a first wall of a chamber to detect a phenomenon in the chamber configured to surround a heated fluid, first data that indicates a value of the phenomenon along a path through the chamber between the first wall and a different wall of the chamber,determining on a processor a first temperature of the first wall;determining on a processor a current path length of the path based at least in part on a nominal path length for a nominal temperature different from the first temperature and thermal expansion of the first wall due to the first temperature;determining on a processor a property of fluid flow in the chamber based on the first data and the current path length of the path; andcausing a device to be operated based on the property of fluid flow in the chamber. 10. A method as recited in claim 9, wherein: the chamber is at least one of a combustor in a gas turbine engine or an exhaust diffuser in a gas turbine engine;the sensor is an acoustic sensor;the phenomenon is acoustic travel time; andthe property is temperature or velocity or both. 11. A method as recited in claim 9, wherein: the sensor is at a first distance from a nearest structural support for the chamber; anddetermining the current path length further comprises determining the current path length of the path based at least in part on the first distance. 12. A method as recited in claim 9 wherein determining the first temperature further comprises determining the first temperature based on the first data and the nominal path length. 13. A method as recited in claim 9, wherein: the method further comprises receiving on a processor, from a first temperature sensor in thermal contact with the first wall, second data that indicates a temperature of the first wall; anddetermining the first temperature further comprises determining the first temperature equal to the temperature of the first wall based on the second data. 14. A method as recited in claim 13, wherein: the first wall comprises an inner plate and an outer plate separated by an thermally insulating material;the sensor is mounted to both the inner plate and the outer plate;the first temperature sensor is disposed in thermal contact with the inner plate;the first temperature is the temperature of the inner plate of the first wall;the method further comprises receiving from a second temperature sensor third data that indicates a second temperature of the outer plate of the first wall, wherein the second temperature sensor is disposed in thermal contact with the outer plate; anddetermining the current path length further comprises determining the current path length based on a difference between the thermal expansion of the inner plate of the first wall due to the first temperature and thermal expansion of the outer plate of the first wall due to the second temperature. 15. A method as recited in claim 13, wherein: a sensitivity of the sensor depends on temperature;the method further comprises receiving on a processor, from a second temperature sensor disposed in thermal contact with the sensor, third data that indicates a second temperature of the sensor; anddetermining the property of the fluid flow in the chamber further comprises determining the property of the fluid flow in the chamber based on the second temperature of the sensor. 16. A method as recited in claim 13, wherein: the sensor is an acoustic transducer mounted in an acoustic waveguide in the first wall which opens into an inside of the chamber and for which the acoustic path depends on temperature;the method further comprises receiving on a processor, from a second temperature sensor disposed in thermal contact with the acoustic waveguide, third data that indicates a second temperature of the acoustic waveguide; anddetermining the current path length further comprises determining the current path length based on the second temperature of the acoustic waveguide. 17. A non-transitory computer readable medium carrying one or more sequences of instructions, wherein execution of the one or more sequences of instructions by one or more processors causes the one or more processors to perform the steps of: receiving from a sensor mounted in a first wall of a chamber to detect phenomenon in the chamber configured to surround a heated fluid, first data that indicates a value of the phenomenon along a path through the chamber between the first wall and a different wall of the chamber,determining a first temperature of the first wall;determining a current path length of the path based at least in part on a nominal path length for a nominal temperature different from the first temperature and thermal expansion of the first wall due to the first temperature;determining a property of fluid flow in the chamber based on the first data and the current path length of the path; andcausing a device to be operated based on the property of fluid flow in the chamber. 18. A non-transitory computer readable medium as recited in claim 17, wherein: execution of the one or more sequences of instructions further causes the one or more processors to perform the step of receiving, from a first temperature sensor in thermal contact with the first wall, second data that indicates a temperature of the first wall; anddetermining the first temperature further comprises determining the first temperature equal to the temperature of the first wall based on the second data. 19. A non-transitory computer readable medium as recited in claim 18, wherein: the first wall comprises an inner plate and an outer plate separated by an thermally insulating material;the sensor is mounted to both the inner plate and the outer plate;the first temperature sensor is disposed in thermal contact with the inner plate;the first temperature is the temperature of the inner plate of the first wall;execution of the one or more sequences of instructions further causes the one or more processors to perform the step of receiving from a second temperature sensor third data that indicates a second temperature of the outer plate of the first wall, wherein the second temperature sensor is disposed in thermal contact with the outer plate; anddetermining the current path length further comprises determining the current path length based on a difference between the thermal expansion of the inner plate of the first wall due to the first temperature and thermal expansion of the outer plate of the first wall due to the second temperature. 20. A non-transitory computer readable medium as recited in claim 18, wherein: the sensor is an acoustic transducer mounted in an acoustic waveguide in the first wall which opens into an inside of the chamber and for which the path is an acoustic path that depends on temperature;execution of the one or more sequences of instructions further causes the one or more processors to perform the step of receiving, from a second temperature sensor disposed in thermal contact with the acoustic waveguide, third data that indicates a second temperature of the acoustic waveguide; anddetermining the current path length further comprises determining the current path length based on the second temperature of the acoustic waveguide.
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이 특허에 인용된 특허 (4)
He, Chengli; Sun, Yanxia; Desilva, Upul P., Combustion anomaly detection via wavelet analysis of dynamic sensor signals.
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