[특허]Methods for gas leak detection and localization in populated areas using isotope ratio measurements

Methods for gas leak detection and localization in populated areas using isotope ratio measurements 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-009/00 G01M-003/20 G01N-021/3504 G01N-021/01 G01N-021/39 G01M-003/38 G01N-021/03
출원번호	US-0656096 (2012-10-19)
등록번호	US-9618417 (2017-04-11)
발명자 / 주소	Rella, Chris W. Crosson, Eric R. Woelk, Michael Tan, Sze Meng
출원인 / 주소	Picarro, Inc.
대리인 / 주소	Lumen Patent Firm
인용정보	피인용 횟수 : 0 인용 특허 : 25

초록 ▼

Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination.

대표청구항 ▼

1. A method of gas leak detection and localization, the method comprising: performing one or more primary gas concentration measurements of a target gas species from a moving platform that proceeds along at least one platform track disposed near one or more potential gas leak locations;performing one or more secondary stable isotope ratio measurements of the target gas species from the moving platform as it proceeds along the at least one platform track;automatically determining whether or not a gas leak is present at the potential gas leak locations based on the primary gas concentration measurements and the secondary stable isotope ratio measurements, wherein the secondary stable isotope ratio measurements provide source identification for detected leaks of the target gas species; andproviding a leak indication at the potential gas leak locations to an end user. 2. The method of claim 1, further comprising performing one or more secondary chemical tracer measurements from the moving platform as it proceeds along the at least one platform track, wherein the secondary chemical tracer measurements provide source identification for detected leaks. 3. The method of claim 1, wherein the secondary stable isotope ratio measurements comprise using a gas handling system to acquire one or more samples and to provide the acquired samples to an off-line isotope ratio measuring instrument. 4. The method of claim 1, wherein the secondary stable isotope ratio measurements are optical absorption measurements made in a resonant optical cavity disposed in an instrument in the moving platform. 5. The method of claim 1, further comprising performing one or more of the primary gas concentration measurements at two or more transversely separated locations on the moving platform as it proceeds along the at least one platform track;performing an automatic transverse spatial scale analysis of the primary gas concentration measurements;wherein the automatically determining whether or not a gas leak is present at the potential gas leak locations is also based on the automatic transverse spatial scale analysis. 6. The method of claim 1, further comprising performing one or more stationary gas concentration measurements when the platform is stationary. 7. The method of claim 1, further comprising performing source identification according to the y-intercept of a linear fit of isotope ratio vs. inverse concentration. 8. The method of claim 1, wherein the leak indication is a binary yes/no indication of whether or not a leak is present. 9. The method of claim 1, further comprising providing a display showing a map with leak figures superposed on the map to show detected leaks, wherein the leak figures include pointers showing the locations of detected leaks, and wherein sizes of the leak figures are scaled with the measured concentration. 10. The method of claim 1, further comprising providing a display showing a map with leak figures superposed on the map to show detected leaks, wherein the leak figures include pointers showing the locations of detected leaks, and wherein sizes of the leak figures are scaled with a difference between the measured concentration and a local background level. 11. The method of claim 10, further comprising superposing measured stable isotope ratios on the map corresponding to one or more of the detected leaks.

이 특허에 인용된 특허 (25)

Cohen Bernard (Woodland Hills CA) Caplan Don B. (Agua Dulce CA) Edwards Edward G. (Woodland Hills CA), Automated leak detection apparatus and method therefor.
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Kurtz Anthony D. (Teaneck NJ), Gas leak detection apparatus and methods.
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Malcosky Norman D. (Columbus OH) Koziar Gregory (Columbus OH), Gas tracer composition and method.
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Burkhart William H. (Los Altos CA), High sensitivity gas leak detection system.
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Prince, Dennis Scott, Innovative gas monitoring with spacial and temporal analysis.
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Ben Oren,Ilan; Colman,Lewis; Carlebach,Ephraim; Giron,Boaz; Levitsky,Gershon, Isotopic gas analyzer.
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Mori, Masaaki; Kubo, Yasuhiro; Miyoshi, Masahiko; Hamao, Tamotsu; Mizui, Hiroaki, Isotopic gas analyzer and method of judging absorption capacity of carbon dioxide absorbent.
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Komninos, Nikolaos I., Laser indicator for remote measuring devices and methods therefor.
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Hosonuma Akira (Abiko JPX) Onodera Teruyuki (Osaka JPX) Takahashi Saburoh (Takaishi JPX) Sakashita Kunio (Yokohama JPX) Hiroshige Yoshinori (Takaishi JPX), Leak detection method for gas, steam or the like based, in part, on the measurement of wind direction and velocity.
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Jude A. Kral ; Lawrence W. Leasko ; Wynn V. Webb ; Bernard J. Moss, Leak detector for endoscopes.
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Hua, Yaping; Li, Zongya; Xiao, Hanwu, Leakage detection method using micromachined-thermal-convection accelerometer.
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Rutherford,James M., Method and apparatus for laser-based remote methane leak detection.
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Sagi, Nehemiah Hemi; Zhang, Guosen Ronald; Ghosh, Ranajit Rana; Wang, Xuguang, Method and apparatus of nondestructive testing a sealed product for leaks.
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Kubo Yasuhiro,JPX ; Morisawa Katsuhiro,JPX ; Zasu Yasushi,JPX ; Ikegami Eiji,JPX ; Tsutsui Kazunori,JPX ; Hamao Tamotsu,JPX ; Mori Masaaki,JPX ; Maruyama Takashi,JPX, Method for spectrometrically measuring isotopic gas and apparatus thereof.
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White, Curt; Wells, Arthur; Diehl, J. Rodney; Strazisar, Brian, Method of detecting leakage from geologic formations used to sequester CO.
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Nelson, Loren D.; O'Brien, Martin J., Methods of and apparatus for detecting low concentrations of target gases in the free atmosphere.
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Askwith Herbert (West Palm Beach FL) Sage Larry (North Palm Beach FL), Multi-media leak test apparatus.
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Henningsen Tom ; Oblak Tod A. ; Garbuny Max ; Zomp John M. ; Altpeter ; Jr. L. L. (Tom), Natural gas detection apparatus and method operable in a moving vehicle.
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Shan, Qing; Pride, Russell Desmond, Portable apparatus and method for tracing a gas leak.
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Paige, Mark E.; Silver, Joel A.; Petroski, Jr., Frank T.; Durkin, Sean, Portable natural gas leak detector.
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Grant William B. (Altadena CA) Hinkley ; Jr. E. David (Glendora CA), Portable remote laser sensor for methane leak detection.
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Schafer Frank,DEX ; Meier Stefan,DEX, Stable isotope analyzer.
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Kalayeh,Hooshmand M.; Paz Pujalt,Gustavo R.; Spoonhower,John P., System and method for remote quantitative detection of fluid leaks from a natural gas or oil pipeline.
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Tulip, John, Vehicle mounted gas detector.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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Methods for gas leak detection and localization in populated areas using isotope ratio measurements 원문보기

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Methods for gas leak detection and localization in populated areas using isotope ratio measurements 원문보기

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