GB1431269A - Detection of gas leakage - Google Patents

Detection of gas leakage

Info

Publication number
GB1431269A
GB1431269A GB5492772A GB5492772A GB1431269A GB 1431269 A GB1431269 A GB 1431269A GB 5492772 A GB5492772 A GB 5492772A GB 5492772 A GB5492772 A GB 5492772A GB 1431269 A GB1431269 A GB 1431269A
Authority
GB
United Kingdom
Prior art keywords
detector
laser
methane
nov
microns
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
Application number
GB5492772A
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.)
Amg Zzrbier Ltdbird T J
Original Assignee
Amg Zzrbier Ltdbird T J
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 Amg Zzrbier Ltdbird T J filed Critical Amg Zzrbier Ltdbird T J
Priority to GB5492772A priority Critical patent/GB1431269A/en
Publication of GB1431269A publication Critical patent/GB1431269A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • 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
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers

Abstract

1431269 Detecting gas leaks A M G ZUURBIER Ltd T J BIRD and T A JONES 27 Nov 1973 [28 Nov 1972] 54927/72 Heading G1A In a gas leak (methane) detector for fitting in a van employing a laser 1 transmitting at 3.3 microns, air is passed via a funnel 13, filter unit 14, pump 15, flow control 16 and through a sample chamber 7 adjacent the laser 1 (or through the optical cavity of the laser). A photo voltaic detector 10 is able to detect any reduction of the laser beam's intensity due to the presence of methane which absorbs radiation at 3.3 microns. The detector's output is amplified (18) and filtered, 19 or 20, before being fed to a pen recorder 26, a meter 25 and an alarm trigger circuit 27. The temperature of the detector is stabilized by means of a Peltier cooling device 21 and an associated thermistor 22 and control circuit 23, the cooling current being shown on a meter 24.
GB5492772A 1972-11-28 1972-11-28 Detection of gas leakage Expired GB1431269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5492772A GB1431269A (en) 1972-11-28 1972-11-28 Detection of gas leakage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5492772A GB1431269A (en) 1972-11-28 1972-11-28 Detection of gas leakage

Publications (1)

Publication Number Publication Date
GB1431269A true GB1431269A (en) 1976-04-07

Family

ID=10472487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5492772A Expired GB1431269A (en) 1972-11-28 1972-11-28 Detection of gas leakage

Country Status (1)

Country Link
GB (1) GB1431269A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4497373A (en) * 1981-08-20 1985-02-05 Graviner Limited Fire and explosion detection and suppression
US4507558A (en) * 1983-02-22 1985-03-26 Honeywell Inc. Selective leak-detector for natural gas
US4943161A (en) * 1983-01-27 1990-07-24 Gkss Forschungszentrum Geesthacht Gmbh Method and apparatus for the detection of hydrocarbons dissolved in bodies of water
WO2000072086A1 (en) * 1999-05-25 2000-11-30 Mitsubishi Cable Industries, Ltd. Light source device for use in detecting gas
FR2940834A1 (en) * 2009-01-07 2010-07-09 Commissariat Energie Atomique DEVICE FOR DETECTING MICRO-LEAKS
CN104483269A (en) * 2014-12-12 2015-04-01 东北石油大学 Optical cavity for testing natural gas absorption spectrum
CN108488633A (en) * 2018-02-17 2018-09-04 安徽中科瀚海光电技术发展有限公司 A kind of buried laser detector
CN109253982A (en) * 2017-07-12 2019-01-22 上海通用检测技术研究所 infrared leak detector
CN111122471A (en) * 2019-12-27 2020-05-08 湖南森尚仪器有限公司 Laser receiver erection equipment
CN113932854A (en) * 2021-10-20 2022-01-14 南方海洋科学与工程广东省实验室(广州) In-situ observation method for methane macroleakage strength of sediment-water interface in cold spring area
CN114607944A (en) * 2022-02-24 2022-06-10 之江实验室 Natural gas pipeline leakage monitoring device and method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4497373A (en) * 1981-08-20 1985-02-05 Graviner Limited Fire and explosion detection and suppression
US4943161A (en) * 1983-01-27 1990-07-24 Gkss Forschungszentrum Geesthacht Gmbh Method and apparatus for the detection of hydrocarbons dissolved in bodies of water
US4507558A (en) * 1983-02-22 1985-03-26 Honeywell Inc. Selective leak-detector for natural gas
WO2000072086A1 (en) * 1999-05-25 2000-11-30 Mitsubishi Cable Industries, Ltd. Light source device for use in detecting gas
US8720254B2 (en) 2009-01-07 2014-05-13 Commisariat A L'energie Atomique Et Aux Energies Alternatives Device for detecting micro-leaks
WO2010079183A1 (en) * 2009-01-07 2010-07-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Device for detecting micro-leaks
FR2940834A1 (en) * 2009-01-07 2010-07-09 Commissariat Energie Atomique DEVICE FOR DETECTING MICRO-LEAKS
CN104483269A (en) * 2014-12-12 2015-04-01 东北石油大学 Optical cavity for testing natural gas absorption spectrum
CN109253982A (en) * 2017-07-12 2019-01-22 上海通用检测技术研究所 infrared leak detector
CN108488633A (en) * 2018-02-17 2018-09-04 安徽中科瀚海光电技术发展有限公司 A kind of buried laser detector
CN111122471A (en) * 2019-12-27 2020-05-08 湖南森尚仪器有限公司 Laser receiver erection equipment
CN113932854A (en) * 2021-10-20 2022-01-14 南方海洋科学与工程广东省实验室(广州) In-situ observation method for methane macroleakage strength of sediment-water interface in cold spring area
CN113932854B (en) * 2021-10-20 2022-07-05 南方海洋科学与工程广东省实验室(广州) In-situ observation method for methane macroleakage strength of sediment-water interface in cold spring area
CN114607944A (en) * 2022-02-24 2022-06-10 之江实验室 Natural gas pipeline leakage monitoring device and method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee