WO2000073761A1 - Portable apparatus and method for tracing a gas leak - Google Patents
Portable apparatus and method for tracing a gas leak Download PDFInfo
- Publication number
- WO2000073761A1 WO2000073761A1 PCT/GB2000/001949 GB0001949W WO0073761A1 WO 2000073761 A1 WO2000073761 A1 WO 2000073761A1 GB 0001949 W GB0001949 W GB 0001949W WO 0073761 A1 WO0073761 A1 WO 0073761A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- detected
- wind direction
- location
- point
- Prior art date
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
- G01M3/02—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
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
Definitions
- the present invention relates to a simple and reliable portable apparatus and method for
- the apparatus comprising
- a gas detector for detecting the presence of a gas
- This information can be used by an engineer
- An engineer can perform more than one measurement at
- the apparatus is preferably portable to enable it to be moved around by an engineer to
- the apparatus may for example be a hand held device or may be
- a support with one or more wheels such as a trolley.
- the gas detector could detect the presence or absence of gas or could measure the
- Pipeline layout information which is often supplied in the form of data to be read and
- a computing means may be used to determine the location of the gas leak source
- a gas leak source location comprising
- the point where the detected presence of gas started to disappear is substantially the gas leak source location, or if gas is detected in the
- the invention is not limited to the detection of fuel gas such as natural gas.
- gas detectors are used, the invention can find broad applications in chemical refineries
- FIG. 1 diagrammatically shows an apparatus for use in the present invention
- Figure 2 shows a hand held version of the apparatus shown in Figure 1;
- Figure 3 shows a version of the apparatus arranged to be carried by a trolley
- Figure 4 illustrates the apparatus in use according to the method of the second
- Figure 5 illustrates the apparatus in use according to the third and fourth aspects of
- Figure 6 is a flow diagram illustrating the gas leak tracing method of the third and
- Figure 1 shows an apparatus 1 according to the present invention comprising a gas
- the gas detector 2 could be a device for
- a gas concentration detector as is well known in the art
- wind direction indicator could also take any convenient form as is well known in the art
- FIG. 2 shows a form of the apparatus 1 which is conveniently portable.
- a hand held probe 10 which in this case has a hollow elongate body with an
- orifice 11 at one end for test gas to enter the probe and a hand grip 12 at a second end to
- the second end of the probe is connected via a flexible hose 13 to a gas
- the probe 10 is provided with a wind direction detector 15 which in this case is a vane secured to the probe 10 with a bracket 16.
- the wind direction indicator could be
- an ultrasonic wind direction indicator sensor provided in any suitable form such as an ultrasonic wind direction indicator sensor.
- Figure 3 shows another example of a conveniently portable form of the apparatus.
- the gas detector 14 is mounted on a trolley 20 having a handle 21, wheels 22
- a short rigid probe 24 is mounted directly to the gas
- detector 14 to receive air close to the ground.
- the apparatus comprising a gas detector and a wind direction indicator is used by an
- This information is preferably used in conjunction with a pipeline layout
- intersection point is likely to be a leak source 32 which may be a defect, for example
- the gas generally leaks from the defect in a gas plume 33 of increasing cross-section as
- detected 31 is preferably taken to be the highest gas concentration or substantially the
- pipeline layout information is provided as data in the form of a computerised map
- That point can be entered into the computing means, for example by entering appropriate
- the computing means can then determine the intersection of one or more
- Figure 5 shows a method of determining a gas leak source location 32 preferably using a
- Point E is found by moving the apparatus in sweeps transverse to the wind direction
- Figure 6 is a flow chart illustrating the method of tracing a gas leak source shown in
- figure 5 using an apparatus with a gas detector and a wind direction indicator.
- step 51 a location is found at which gas is detected.
- step 52 the apparatus is moved upwind in the direction of the detected wind direction
- step 53 the apparatus is moved transversely to the detected wind direction.
- step 55 proceeds to step 55 at which the point found in step 52 is determined to be the gas leak
- the gas detector need not necessarily detect fuel gas but
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/926,627 US6532801B1 (en) | 1999-05-27 | 2000-05-24 | Portable apparatus and method for tracing a gas leak |
JP2001500836A JP2003501619A (en) | 1999-05-27 | 2000-05-24 | Portable device and method for tracking gas leaks |
EP00931407A EP1185848A1 (en) | 1999-05-27 | 2000-05-24 | Portable apparatus and method for tracing a gas leak |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9912332.5A GB9912332D0 (en) | 1999-05-27 | 1999-05-27 | Portable apparatus and method for tracing a gas leak |
GB9912332.5 | 1999-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000073761A1 true WO2000073761A1 (en) | 2000-12-07 |
Family
ID=10854257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/001949 WO2000073761A1 (en) | 1999-05-27 | 2000-05-24 | Portable apparatus and method for tracing a gas leak |
Country Status (5)
Country | Link |
---|---|
US (1) | US6532801B1 (en) |
EP (1) | EP1185848A1 (en) |
JP (1) | JP2003501619A (en) |
GB (2) | GB9912332D0 (en) |
WO (1) | WO2000073761A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2382656A (en) * | 2001-07-27 | 2003-06-04 | Lattice Intellectual Property | Method of detecting the presence and location of a gas leak |
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JP2002312870A (en) * | 2001-04-13 | 2002-10-25 | Tlv Co Ltd | Portable gas detector |
JP3834648B2 (en) * | 2003-07-03 | 2006-10-18 | 国立大学法人 筑波大学 | Chemical substance source search device |
US9618417B2 (en) | 2011-10-20 | 2017-04-11 | Picarro, Inc. | Methods for gas leak detection and localization in populated areas using isotope ratio measurements |
US9500556B2 (en) | 2011-10-20 | 2016-11-22 | Picarro, Inc. | Methods for gas leak detection and localization in populated areas using multi-point analysis |
US9482591B2 (en) | 2011-10-20 | 2016-11-01 | Picarro, Inc. | Methods for gas leak detection and localization in populated areas using horizontal analysis |
US8930341B2 (en) * | 2012-05-07 | 2015-01-06 | Alexander Himanshu Amin | Mobile communications device with electronic nose |
US10839440B2 (en) * | 2012-05-07 | 2020-11-17 | Hannah Elizabeth Amin | Mobile communications device with electronic nose |
US9645127B2 (en) | 2012-05-07 | 2017-05-09 | Alexander Himanshu Amin | Electronic nose system and method |
US9719879B1 (en) | 2012-05-14 | 2017-08-01 | Picarro, Inc. | Gas detection systems and methods with search directions |
US9188574B2 (en) | 2012-06-05 | 2015-11-17 | International Business Machines Corporation | Mobile gas detection cart with wireless transceiver |
US9599529B1 (en) | 2012-12-22 | 2017-03-21 | Picarro, Inc. | Systems and methods for likelihood-based mapping of areas surveyed for gas leaks using mobile survey equipment |
JP6350786B2 (en) * | 2013-10-01 | 2018-07-04 | 能美防災株式会社 | Mobile smoke detector and method for identifying smoke generation position using the same |
WO2015107707A1 (en) * | 2014-01-15 | 2015-07-23 | 株式会社グッドマン | Water leakage search device and water leakage search method |
US9823231B1 (en) * | 2014-06-30 | 2017-11-21 | Picarro, Inc. | Systems and methods for assembling a collection of peaks characterizing a gas leak source and selecting representative peaks for display |
CN104180950B (en) * | 2014-08-21 | 2017-06-13 | 佛山市美的清湖净水设备有限公司 | Water purification equipment tightness detection system and method |
EP3001170B1 (en) * | 2014-09-25 | 2018-04-18 | Inficon GmbH | Carpet probe for leak detection |
WO2016081928A1 (en) | 2014-11-21 | 2016-05-26 | Picarro, Inc. | Gas detection systems and methods using measurement position uncertainty representations |
JP6533279B2 (en) * | 2015-02-19 | 2019-06-19 | 株式会社グッドマン | Leak detection device and leak detection method |
US10386258B1 (en) | 2015-04-30 | 2019-08-20 | Picarro Inc. | Systems and methods for detecting changes in emission rates of gas leaks in ensembles |
KR102407323B1 (en) * | 2015-11-11 | 2022-06-10 | 삼성전자 주식회사 | Electronic apparatus and method for utilizing gas sesnsors |
JP6789852B2 (en) * | 2017-03-02 | 2020-11-25 | 三菱重工業株式会社 | Leakage location identification device and leakage location identification method |
JP6971617B2 (en) * | 2017-04-27 | 2021-11-24 | 三菱電機ビルテクノサービス株式会社 | Gas leak detector |
US10948471B1 (en) | 2017-06-01 | 2021-03-16 | Picarro, Inc. | Leak detection event aggregation and ranking systems and methods |
JP6959766B2 (en) * | 2017-06-15 | 2021-11-05 | ホーチキ株式会社 | Smoke detector |
US10962437B1 (en) | 2017-06-27 | 2021-03-30 | Picarro, Inc. | Aggregate leak indicator display systems and methods |
JP6512616B2 (en) * | 2017-11-10 | 2019-05-15 | 能美防災株式会社 | Mobile smoke detection device and method of specifying smoke generation position using the same |
US10775258B2 (en) * | 2018-03-13 | 2020-09-15 | International Business Machines Corporation | Heuristic based analytics for gas leak source identification |
JP7024643B2 (en) * | 2018-07-18 | 2022-02-24 | 富士通株式会社 | Odor measuring device, odor measuring system, and odor measuring method |
CN113001559A (en) * | 2021-02-24 | 2021-06-22 | 汕头大学 | Automatic leaking point positioning method for pressurized leaking stoppage robot |
CN113971874B (en) * | 2021-09-30 | 2023-02-17 | 中国化学工程第六建设有限公司 | Emergency safety alarm system for site operation |
US20230280230A1 (en) * | 2022-03-03 | 2023-09-07 | Abb Schweiz Ag | Method for Estimating Flux Using Handheld Gas Sensors and an Inertial Measurement Unit |
Citations (2)
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EP0503841A2 (en) * | 1991-03-05 | 1992-09-16 | MITSUI TOATSU CHEMICALS, Inc. | Leak detection and measurement of wind direction and velocity |
DE4127543A1 (en) * | 1991-08-20 | 1993-02-25 | Werner Ratfisch | Trolley mounted gas leak detection unit for monitoring gas pipelines - in which analyser is built into housing having at least 2 rollers and suction pump draws in gases via funnel inlet and supplies them to analyser |
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JPH07140031A (en) * | 1993-11-18 | 1995-06-02 | Chiyoda Corp | Estimation of gas-leaking-source region, gas-leaking-source position and amount of gas leakage |
JP3437246B2 (en) | 1994-03-25 | 2003-08-18 | 科学技術振興事業団 | Odor source direction determination probe and odor source detection method using the same |
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GB9727306D0 (en) * | 1997-12-24 | 1998-02-25 | Servomex Plc | Gas sensor |
-
1999
- 1999-05-27 GB GBGB9912332.5A patent/GB9912332D0/en not_active Ceased
-
2000
- 2000-05-24 JP JP2001500836A patent/JP2003501619A/en active Pending
- 2000-05-24 EP EP00931407A patent/EP1185848A1/en not_active Withdrawn
- 2000-05-24 US US09/926,627 patent/US6532801B1/en not_active Expired - Fee Related
- 2000-05-24 WO PCT/GB2000/001949 patent/WO2000073761A1/en not_active Application Discontinuation
- 2000-05-24 GB GB0012552A patent/GB2350432B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0503841A2 (en) * | 1991-03-05 | 1992-09-16 | MITSUI TOATSU CHEMICALS, Inc. | Leak detection and measurement of wind direction and velocity |
DE4127543A1 (en) * | 1991-08-20 | 1993-02-25 | Werner Ratfisch | Trolley mounted gas leak detection unit for monitoring gas pipelines - in which analyser is built into housing having at least 2 rollers and suction pump draws in gases via funnel inlet and supplies them to analyser |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2382656A (en) * | 2001-07-27 | 2003-06-04 | Lattice Intellectual Property | Method of detecting the presence and location of a gas leak |
GB2382656B (en) * | 2001-07-27 | 2005-03-09 | Lattice Intellectual Property | Method of detecting the presence and location of a gas leak |
Also Published As
Publication number | Publication date |
---|---|
JP2003501619A (en) | 2003-01-14 |
EP1185848A1 (en) | 2002-03-13 |
GB2350432B (en) | 2002-12-18 |
US6532801B1 (en) | 2003-03-18 |
GB0012552D0 (en) | 2000-07-12 |
GB9912332D0 (en) | 1999-07-28 |
GB2350432A (en) | 2000-11-29 |
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