A device includes a stationary, rotary component, and a fiber optic sensing system. The fiber optic sensing system includes a cable having one or more fiber optic sensors disposed on the stationary component, the rotary component, or combinations thereof. The fiber optic sensing system is configured
A device includes a stationary, rotary component, and a fiber optic sensing system. The fiber optic sensing system includes a cable having one or more fiber optic sensors disposed on the stationary component, the rotary component, or combinations thereof. The fiber optic sensing system is configured to detect one or more first parameters including temperature, strain, pressure, vibration, torque; or combinations thereof related to the stationary component, the rotary component, or combinations thereof. The one or more first parameters is used to determine one or more second parameters including thermal expansion, clearance, fluid flow rate variation, condensation, fluid leakage, thermal loss, life, thermal stress, or combinations thereof related to the stationary component, the rotary component, or combinations thereof.
대표청구항▼
1. A device; comprising: a stationary component;a rotary component; anda fiber optic sensing system comprising one or more fiber optic sensors disposed on the stationary component, the rotary component, or combinations thereof; a controller configured to detect one or more first parameters comprisin
1. A device; comprising: a stationary component;a rotary component; anda fiber optic sensing system comprising one or more fiber optic sensors disposed on the stationary component, the rotary component, or combinations thereof; a controller configured to detect one or more first parameters comprising temperature distribution, strain, pressure, vibration, torque, related to the stationary component, the rotary component, or combinations thereof, and determine one or more second parameters comprising clearance, fluid flow rate variation, condensation, fluid leakage, related to the stationary component, the rotary component, or combinations thereof based on the one or more first parameters. 2. The device of claim 1, wherein the device comprises a rotary machine. 3. The device of claim 2, wherein the rotary machine comprises a steam turbine. 4. The device of claim 1, further comprising a plurality of stationary components comprising a stationary casing, pipe, valve, boiler, or combinations thereof; wherein the fiber optic sensing system is disposed on at least one of the plurality of stationary components. 5. The device of claim 4; wherein the one or more first parameters is used to determine one or more second parameters comprising thermal expansion of the stationary casing, clearance between the stationary casing and the rotary component, fluid flow rate variation in the pipe and valve, condensation in the pipe and valve, fluid leakage in the pipe and valve, thermal loss, life, thermal stress. 6. The device of claim 4, wherein the fiber optic sensing system comprises a detection system configured to receive reflected light from the one or more fiber optic sensors. 7. The device of claim 6, wherein the fiber optic sensing system comprises the controller configured to receive an output from the detection system and detect the one or more first parameters based on the output from the detection system. 8. The device of claim 4, wherein a wavelength shift of the one or more fiber optic sensors is calibrated to measure the temperature distribution of the plurality of stationary components comprising the stationary casing, pipe, valve, boiler, or combinations thereof. 9. The device of claim 4, wherein a wavelength shift of the one or more fiber optic sensors is calibrated to measure a mechanical response of the plurality of stationary components comprising the stationary casing, pipe, valve, boiler, or combinations thereof. 10. A steam turbine, comprising: a stationary casing;a rotor disposed in the stationary casing; anda fiber optic sensing system comprising one or more fiber optic sensors disposed on the stationary casing, the rotor, or combinations thereof; a controller configured to detect one or more first parameters comprising temperature distribution, strain, pressure, vibration, torque, related to the stationary casing, the rotor, or combinations thereof, and determine one or more second parameters comprising clearance, fluid flow rate variation, condensation, fluid leakage, related to the stationary casing, the rotor, or combinations thereof, based on the one or more first parameters. 11. The steam turbine of claim 10, further comprising one or more pipes, valves, or combinations thereof; wherein the fiber optic sensing system comprises a cable comprising one or more fiber optic sensors disposed on the one or more pipes, valves, or combinations thereof and configured to detect one or more first parameters comprising temperature distribution, strain, pressure, vibration, torque, related to the one or more pipes, valves, or combinations thereof. 12. The steam turbine of claim 11; wherein the one or more first parameters is used to determine one or more second parameters comprising thermal expansion of the stationary casing, clearance between the stationary casing and the rotor, fluid flow rate variation in the one or more pipes and valves, condensation in the one or more pipes and valves, fluid leakage in one or more pipes and valves, thermal loss, life, thermal stress, start-up speed. 13. The steam turbine of claim 11, wherein the cable is welded to the stationary casing, rotor; one or more pipes, valves, or combinations thereof, wherein operation temperature of the steam turbine is greater than 1000 degrees fahrenheit. 14. The steam turbine of claim 11, wherein the cable is clamped to the stationary casing, rotor, one or more pipes, valves, or combinations thereof, wherein the operation temperature of the steam turbine is lower than 1000 degrees fahrenheit. 15. The steam turbine of claim 11, wherein the cable is glued to the stationary casing, rotor, one or more pipes, valves, or combinations thereof, wherein the operation temperature of the steam turbine is lower than 600 degrees fahrenheit. 16. The steam turbine of claim 11, wherein the cable comprises at least one fiber core, a fiber cladding disposed around the at least one fiber core, and a fiber coating layer disposed around the fiber cladding. 17. The steam turbine of claim 16, wherein the fiber coating layer comprises polyimide, silicone, acrylate, carbon, copper, nickel, gold, aluminum, or combinations thereof. 18. The steam turbine of claim 16, wherein the cable comprises a plurality of fiber bragg grating elements disposed in the fiber core; wherein the fiber bragg grating elements are separated by a predetermined distance. 19. The steam turbine of claim 16, wherein the fiber optic sensing system further comprises a light source configured to illuminate the fiber core via an optical coupler. 20. The steam turbine of claim 16, wherein cable comprises a metal tubing disposed surrounding the fiber coating layer. 21. The steam turbine of claim 16, wherein the cable further comprises a fiber sleeving disposed between the fiber coating layer and the metal tubing. 22. The steam turbine of claim 21, wherein the sleeving comprises silica, ceramic material, or combinations thereof. 23. The steam turbine of claim 10, wherein the fiber optic sensing system comprises an infrared photodetector configured to receive reflected light from the one or more fiber optic sensors. 24. The steam turbine of claim 23, wherein the fiber optic sensing system comprises the controller configured to receive an output from the infrared photodetector and detect the one or more first parameters based on the output from the infrared photodetector. 25. A method comprising: directing light from a light source to a fiber optic sensing cable comprising a plurality of fiber optic sensors disposed on a stationary component, a rotary component, or combinations thereof;receiving reflected light from the plurality of fiber optic sensors using a detection system; anddetecting one or more first parameters related to the stationary component, a rotary component, or combinations thereof comprising temperature distribution, strain, pressure, vibration, torque, based on shift in wavelength of light reflected from the plurality of fiber optic sensors, via a controller,determining one or more second parameters comprising clearance, fluid flow rate variation, condensation, fluid leakage, related to the stationary component, the rotary component, or combinations thereof based on the one or more first parameters, via the controller. 26. The method of claim 25, further comprising controlling start-up speed of a device based on the one or more second parameters, wherein the device comprises the stationary component, the rotary component, the fiber optic sensing cable, the detection system, and the controller.
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이 특허에 인용된 특허 (5)
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