DE69211350T2 - Verfahren und vorrichtung zur photoakustischen leckfindung - Google Patents

Verfahren und vorrichtung zur photoakustischen leckfindung

Info

Publication number
DE69211350T2
DE69211350T2 DE69211350T DE69211350T DE69211350T2 DE 69211350 T2 DE69211350 T2 DE 69211350T2 DE 69211350 T DE69211350 T DE 69211350T DE 69211350 T DE69211350 T DE 69211350T DE 69211350 T2 DE69211350 T2 DE 69211350T2
Authority
DE
Germany
Prior art keywords
leak
gas
light
processed
leak detection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69211350T
Other languages
English (en)
Other versions
DE69211350D1 (de
DE69211350T3 (de
Inventor
Thomas Mcrae
Alan H Dewey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LASER IMAGING SYSTEMS
Original Assignee
LASER IMAGING SYSTEMS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LASER IMAGING SYSTEMS filed Critical LASER IMAGING SYSTEMS
Publication of DE69211350D1 publication Critical patent/DE69211350D1/de
Publication of DE69211350T2 publication Critical patent/DE69211350T2/de
Application granted granted Critical
Publication of DE69211350T3 publication Critical patent/DE69211350T3/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/38—Investigating fluid-tightness of structures by using light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
DE69211350T 1991-08-26 1992-08-20 Verfahren und vorrichtung zur photoakustischen leckfindung Expired - Fee Related DE69211350T3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/749,910 US5161408A (en) 1991-08-26 1991-08-26 Photo-acoustic leak detection system and method
PCT/US1992/006949 WO1993004352A1 (en) 1991-08-26 1992-08-20 Photo-acoustic leak detection and method

Publications (3)

Publication Number Publication Date
DE69211350D1 DE69211350D1 (de) 1996-07-11
DE69211350T2 true DE69211350T2 (de) 1997-01-16
DE69211350T3 DE69211350T3 (de) 1999-07-22

Family

ID=25015727

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69211350T Expired - Fee Related DE69211350T3 (de) 1991-08-26 1992-08-20 Verfahren und vorrichtung zur photoakustischen leckfindung

Country Status (7)

Country Link
US (1) US5161408A (de)
EP (1) EP0602119B2 (de)
JP (1) JP3040474B2 (de)
AT (1) ATE139029T1 (de)
CA (1) CA2116345C (de)
DE (1) DE69211350T3 (de)
WO (1) WO1993004352A1 (de)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552044B1 (de) * 1992-01-16 1996-10-09 Kabushiki Kaisha Toshiba Verfahren und Vorrichtung zur Positionserkennung einer anormalen Stelle einer erdverlegten Rohrleitung
US5576480A (en) * 1992-11-06 1996-11-19 Pall Corporation System and method for testing the integrity of porous elements
US5417113A (en) * 1993-08-18 1995-05-23 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Leak detection utilizing analog binaural (VLSI) techniques
EP0640822B1 (de) * 1993-08-30 1998-04-22 Millipore Investment Holdings Limited Prüfung der Unversehrtheit poröser Strukturen mittels Schallemission
DE4415852A1 (de) * 1994-05-05 1995-11-09 Gerhart Schroff Verfahren und Anordnung zur Dichtheitsprüfung
EP0803055B1 (de) * 1995-01-14 2000-12-13 Gerhart Schroff Photoakustische Dichtheitsprüfung mit geregeltem Laser
JPH09304281A (ja) * 1996-05-09 1997-11-28 Tokyo Electric Power Co Inc:The 油検知装置
US5854422A (en) * 1996-07-10 1998-12-29 K-Line Industries, Inc. Ultrasonic detector
US5834632A (en) * 1997-03-27 1998-11-10 United Technologies Corporation Photo-acoustic leak detector with multiple beams
US5780724A (en) * 1997-03-27 1998-07-14 United Technologies Corp Photo-acoustic leak detector with improved signal-to-noise response
US5979239A (en) * 1997-04-28 1999-11-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Ultrasonic imaging system
US6157033A (en) * 1998-05-18 2000-12-05 Power Distribution Services, Inc. Leak detection system
US6154307A (en) * 1998-09-18 2000-11-28 United Technologies Corporation Method and apparatus to diffract multiple beams
US6089076A (en) * 1998-09-18 2000-07-18 United Technologies Corporation System to control the power of a beam
US6227036B1 (en) 1998-10-28 2001-05-08 The Regents Of The University Of Michigan Multiple microphone photoacoustic leak detection and localization system and method
FR2786566B1 (fr) * 1998-11-26 2000-12-29 Cit Alcatel Procede et dispositif de detection de fuites sur echangeurs automobiles
GB0015691D0 (en) * 2000-06-28 2000-08-16 Bae Systems Plc Detection of fuel leak sites in aricraft
US6553809B1 (en) 2001-11-01 2003-04-29 Plastic Technologies, Inc. Method and apparatus for detecting holes in plastic containers
US6866089B2 (en) * 2002-07-02 2005-03-15 Carrier Corporation Leak detection with thermal imaging
US20040016700A1 (en) * 2002-07-23 2004-01-29 Benjamin Kellam System and a method for determining integrity of a dialyzer
US7375814B2 (en) * 2005-03-11 2008-05-20 Sandia Corporation Natural gas leak mapper
US7535656B2 (en) 2005-06-15 2009-05-19 Daylight Solutions, Inc. Lenses, optical sources, and their couplings
US7492806B2 (en) 2005-06-15 2009-02-17 Daylight Solutions, Inc. Compact mid-IR laser
US7644606B2 (en) * 2007-01-29 2010-01-12 Uchicago Argonne, Llc Photoacoustic spectroscopy system and technique for remote sensing of explosives and toxic chemicals
US8659664B2 (en) 2007-03-23 2014-02-25 Flir Systems, Inc. Thermography camera configured for leak detection
US8653461B1 (en) 2007-03-23 2014-02-18 Flir Systems, Inc. Thermography camera tuned to detect absorption of infrared radiation in a selected spectral bandwidth
US20090159798A1 (en) * 2007-12-20 2009-06-25 Daylight Solutions, Inc. Gas imaging system
US7848382B2 (en) 2008-01-17 2010-12-07 Daylight Solutions, Inc. Laser source that generates a plurality of alternative wavelength output beams
US8468874B2 (en) * 2008-02-06 2013-06-25 Radiaulics, Inc. Laser indicator for remote measuring devices and methods therefor
WO2009117399A2 (en) * 2008-03-17 2009-09-24 Plastic Technologies, Inc. Method and apparatus for improved detection of holes in plastic containers
US20100110198A1 (en) * 2008-04-01 2010-05-06 Daylight Solutions, Inc. Mid infrared optical illuminator assembly
US8565275B2 (en) 2008-04-29 2013-10-22 Daylight Solutions, Inc. Multi-wavelength high output laser source assembly with precision output beam
US8306077B2 (en) 2008-04-29 2012-11-06 Daylight Solutions, Inc. High output, mid infrared laser source assembly
DE102008057458B4 (de) * 2008-11-14 2012-04-26 Sartorius Stedim Biotech Gmbh Verfahren und Vorrichtung zur Durchführung von Integritätstests
US8774244B2 (en) 2009-04-21 2014-07-08 Daylight Solutions, Inc. Thermal pointer
US20110080311A1 (en) * 2009-10-05 2011-04-07 Michael Pushkarsky High output laser source assembly with precision output beam
US8718105B2 (en) 2010-03-15 2014-05-06 Daylight Solutions, Inc. Laser source that generates a rapidly changing output beam
US8335413B2 (en) 2010-05-14 2012-12-18 Daylight Solutions, Inc. Optical switch
US8467430B2 (en) 2010-09-23 2013-06-18 Daylight Solutions, Inc. Continuous wavelength tunable laser source with optimum orientation of grating and gain medium
US9225148B2 (en) 2010-09-23 2015-12-29 Daylight Solutions, Inc. Laser source assembly with thermal control and mechanically stable mounting
US9042688B2 (en) 2011-01-26 2015-05-26 Daylight Solutions, Inc. Multiple port, multiple state optical switch
EP2838711B1 (de) * 2012-04-16 2016-07-13 Vestas Wind Systems A/S Verfahren zur herstellung eines verbundteils und vorrichtung zur herstellung eines verbundteils
JP5936529B2 (ja) * 2012-12-14 2016-06-22 三菱重工業株式会社 ガス漏洩検知システム
CN103439060A (zh) * 2013-08-27 2013-12-11 南京诺威尔光电系统有限公司 激光同步扫描成像微量气体检测方法及系统
US9939343B2 (en) * 2014-09-30 2018-04-10 Uchicago Argonne, Llc Acoustic building infiltration measurement system
US9541537B1 (en) * 2015-09-24 2017-01-10 Frito-Lay North America, Inc. Quantitative texture measurement apparatus and method
US11243190B2 (en) 2015-09-24 2022-02-08 Frito-Lay North America, Inc. Quantitative liquid texture measurement method
US20160205810A1 (en) * 2016-03-21 2016-07-14 Sam A Marshall Inherently leak free liquid cooling of equipment
CN114832517B (zh) * 2022-06-17 2024-03-22 河南工小艺物联科技有限公司 一种带破袋定位功能的脉冲控制系统
CN116878741B (zh) * 2023-09-06 2023-12-01 江苏炎启自动化有限公司 一种用于gis室内气体泄漏的检测装置及其使用方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1007325A (en) * 1973-11-14 1977-03-22 Her Majesty In Right Of Canada As Represented By Atomic Energy Of Canada Limited Gas detection system
SU868389A1 (ru) * 1980-01-02 1981-09-30 Предприятие П/Я А-3503 Устройство дл контрол герметичности
US4457162A (en) * 1982-09-17 1984-07-03 Institute Of Gas Technology Multi-frequency photo-acoustic detector
US4555627A (en) * 1983-04-05 1985-11-26 The United States Of America As Represented By The United States Department Of Energy Backscatter absorption gas imaging system
SU1281947A1 (ru) * 1984-12-19 1987-01-07 Организация П/Я М-5222 Устройство дл контрол герметичности заполн емых контрольным газом изделий
US4772789A (en) * 1987-12-28 1988-09-20 Rockwell International Corporation Leak imaging using differential absorption

Also Published As

Publication number Publication date
JPH06510121A (ja) 1994-11-10
JP3040474B2 (ja) 2000-05-15
ATE139029T1 (de) 1996-06-15
WO1993004352A1 (en) 1993-03-04
EP0602119A1 (de) 1994-06-22
DE69211350D1 (de) 1996-07-11
EP0602119A4 (en) 1994-06-29
EP0602119B1 (de) 1996-06-05
DE69211350T3 (de) 1999-07-22
CA2116345A1 (en) 1993-03-04
EP0602119B2 (de) 1999-04-07
CA2116345C (en) 1999-06-01
US5161408A (en) 1992-11-10

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee