[특허]Thermal measurement system and method for leak detection

[미국특허] Thermal measurement system and method for leak detection 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G08B-021/00 G01J-005/00 G01F-001/68
출원번호	US-0718932 (2010-03-05)
등록번호	US-8410946 (2013-04-02)
발명자 / 주소	Ansari, Adil Chillar, Rahul Jaikaran
출원인 / 주소	General Electric Company
대리인 / 주소	Fletcher Yoder P.C.
인용정보	피인용 횟수 : 3 인용 특허 : 25

초록

A system includes a controller configured to receive a signal from a thermal radiation sensor indicative of a temperature of a region including at least one fluid passage. The controller is also configured to detect a leak within the at least one fluid passage based on the signal.

대표청구항 ▼

1. A system comprising: a thermal radiation sensor directed toward a region including at least one fluid passage, wherein the thermal radiation sensor comprises a thermopile configured to detect thermal radiation emitted by fluid leaking from the at least one fluid passage, and to output a signal indicative of a temperature of the region; anda controller communicatively coupled to the thermal radiation sensor, wherein the controller is configured to detect a leak within the at least one fluid passage based on the signal. 2. The system of claim 1, comprising an optical focusing device configured to focus the thermal radiation onto the thermal radiation sensor. 3. The system of claim 2, wherein the optical focusing device comprises a mirror, a lens, or a combination thereof. 4. The system of claim 1, comprising a band-pass filter disposed between the thermal radiation sensor and the region, wherein the band-pass filter is configured to block passage of electromagnetic radiation having wavelengths less than approximately 2 microns and wavelengths greater than approximately 20 microns. 5. The system of claim 1, wherein the band-pass filter is configured to block passage of electromagnetic radiation having wavelengths less than approximately 4 microns and wavelengths greater than approximately 18 microns. 6. The system of claim 5, wherein the band-pass filter is configured to block passage of electromagnetic radiation having wavelengths less than approximately 6 microns and wavelengths greater than approximately 16 microns. 7. The system of claim 6, wherein the band-pass filter is configured to block passage of electromagnetic radiation having wavelengths less than approximately 8 microns and wavelengths greater than approximately 14 microns. 8. The system of claim 1, wherein the thermal radiation sensor is configured to detect thermal radiation having a frequency within an infrared spectrum. 9. The system of claim 1, wherein the controller is configured to detect the leak within the at least one fluid passage if the temperature of the region exceeds a first threshold value, decreases below a second threshold value, or a combination thereof. 10. The system of claim 1, wherein the controller is configured to detect the leak within the at least one fluid passage if a rate of change of the temperature of the region exceeds a third threshold value. 11. The system of claim 1, comprising a power generation system including the at least one fluid passage. 12. A system comprising: a controller configured to receive a signal from a thermal radiation sensor indicative of a temperature of a region including at least one fluid passage, wherein the controller is configured to detect a leak within the at least one fluid passage based on the signal, and the thermal radiation sensor comprises a thermopile configured to detect thermal radiation emitted by fluid leaking from the at least one fluid passage. 13. The system of claim 12, wherein the controller is configured to detect the leak within the at least one fluid passage by comparing the temperature of the region to a threshold value. 14. The system of claim 12, wherein the controller is configured to generate a graphical representation of the temperature of the region. 15. The system of claim 12, wherein the controller is configured to activate an audible or visual alarm upon detection of the leak within the at least one fluid passage. 16. The system of claim 12, comprising a gas turbine system including the at least one fluid passage. 17. The system of claim 12, wherein the controller is configured to detect the leak within the at least one fluid passage by comparing a rate of change of the temperature of the region to a threshold value. 18. A method comprising: measuring thermal radiation within a region including at least one fluid passage via a thermopile configured to detect thermal radiation emitted by fluid leaking from the at least one fluid passage;determining a temperature of the region based on the measurement; anddetecting a leak within the at least one fluid passage based on the temperature of the region. 19. The method of claim 18, wherein detecting the leak within the at least one fluid passage comprises comparing the temperature of the region to a threshold temperature. 20. The method of claim 18, comprising generating and displaying a graphical representation of the temperature of the region. 21. The method of claim 18, comprising activating an audible or visual alarm upon detection of the leak within the at least one fluid passage. 22. The method of claim 18, comprising terminating flow through the at least one fluid passage upon detection of the leak within the at least one fluid passage. 23. The method of claim 18, wherein detecting the leak within the at least one fluid passage comprises comparing a rate of change of the temperature of the region to a threshold rate.

이 특허에 인용된 특허 (25) 인용/피인용 타임라인 분석

Myhre,Douglas C., Apparatus for observing combustion conditions in a gas turbine engine.
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Van Mullekom, Jennifer H.; Melnyk, Michael Charles; Dayal, Bhupinder Singh, Continuous on-board diagnostic lubricant monitoring system and method.
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Macchia,Enzo, Detection of gas turbine engine hot section condition.
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Gilbert Kendall E. (Schenectady NY) Johnson Daniel (Rexford NY) Macier Robert Raymond (Saratoga Springs NY), Gas turbine temperature sensor validation apparatus and method.
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Rusnak Dennis M. (Miamisburg OH), Hall effect monitoring of wear of bearing supporting a rotor within a stationary housing.
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Kern Mark T. (Goleta CA) Cinzori Robert J. (Santa Barbara CA) Fuller William D. (Goleta CA), High speed hot air leak sensor.
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Drakulich Dushan ; Cueva-Eguiguren M., Leak detection system.
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Ketchum,Gary T., Leak point wetness sensor for urological investigations.
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Venkateswaran, Narayanan; Shah, Minesh Ashok; Norman, Bruce Gordon, Method and apparatus for monitoring the performance of a gas turbine system.
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Drosdziok Armin (Essen DEX) Zrner Walter (Baiersdorf-Igelsdorf DEX), Method and apparatus for operational monitoring of a condenser with tubes, by measurements at selected tubes.
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Lilley, Darrel Shayne; Nemet, Anton; Rueter, Andreas, Method for determination of the temperature, mass-averaged over a flow cross-section, of a gas flow in a gas turbine.
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Irwin, Craig W.; McBride, Richard W.; Olson, Kenneth D.; Simmons, Carl F., Rotor inlet temperature control for turbo machine.
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William M. Glasheen ; Charles DeMilo ; Helmar R. Steglich, System and method for determining combustion temperature using infrared emissions.
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Cryer, Robert Douglas; Waugaman, Charles Joseph; Stewart, Lance Thomas; Escobar, Dario Patrico; Kumar, Manoj P.; Handler, Laurence Richard; Daniel, Cecil M., System and method for monitoring the condition of a heat exchange unit.
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Nelson, James S.; Rekucki, Mark A., System and method having arm with cable passage through joint to infrared lamp.
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Tamaro, Robert F., System for waste heat augmentation in combined cycle plant through combustor gas diversion.
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Amano Kazuo (Tokyo JPX) Yoshida Shotaro (Tokyo JPX), Temperature abnormality detecting structure for fluid pipe.
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Jensen, John Steffen, Temperature measurement instruments and methods for identifying a selected target area.
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Takei,Youji; Tsukizawa,Masao, Temperature measuring apparatus, and temperature correction processing device.
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Allen John B. (Richardson TX), Temperature measuring method using infrared sensors and processor.
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Chamberlain,Gary Roy; Mellor,Andrew; Ridley,Ian Hamilton, Thermal imaging system and method.
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Tokuyasu, Noboru; Hoshika, Hiroaki; Kashio, Kaori; Osaka, Mituharu; Ohtsuki, Toshiki; Sukegawa, Yoshihiro, Thermal type gas flowmeter.
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Freberg Dana D. (Middletown OH) Spencer William R. (Springdale OH), Turbomachine airflow temperature sensor.
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이 특허를 인용한 특허 (3) 인용/피인용 타임라인 분석

Takeda, Hirofumi, Method and apparatus for detecting gas leakage from radioactive material sealed container.
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Rud, Jason Harold, Process conduit anomaly detection using thermal imaging.
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Ansari, Adil; Chillar, Rahul Jaikaran, System and method for adjusting compressor inlet fluid temperature.
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[미국특허] Thermal measurement system and method for leak detection 원문보기