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

A gas leak detection, isotope ratio technology that can solve the lack of estimated distance to the leak source by detecting the presence of fluid at the leak point, using liquid/vacuum for liquid tightness measurement, applying light to test fluid tightness, etc. , Insufficient moving gas, distinction, etc.

Active Publication Date: 2015-06-24
PICARRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional methods for mobile gas leak detection are severely deficient
Typically, these deficiencies include one or more of the following: 1) Difficulty distinguishing leaks from background; 2) Difficulty distinguishing leaks of the measured gas from other possible sources; and 3) Lack of estimates to the source of the leak distance

Method used

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

Examples

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Embodiment Construction

[0012] It is convenient to define a gas leak as any situation in which a gas is present in the environment at concentrations above background. Gas leaks as defined include, but are not limited to: leaks from gas pipelines or delivery systems (e.g. natural gas leaks), leaks from gas processing or operating facilities, and releases from gas sources to the environment (e.g. pollution, from landfills gas emissions from land, etc.).

[0013] A gas plume model is any mathematical model that relates gas concentrations to locations in space.

[0014] A) level analysis

[0015] A1) Principle

[0016] Figure 1a -b shows an example of horizontal spatial scale analysis according to various embodiments of the present invention. The mobile platform 102 advances along at least one platform track 106 . Platform 102 may be any vehicle, such as a car, truck, van, or bicycle. Platform 102 may also be any other mobile entity capable of transporting gas measuring instruments, such as a perso...

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Abstract

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.

Description

field of invention [0001] The present invention relates to gas leak detection. Background technique [0002] Gas leak detection is an important practical problem. In many cases, it is necessary to quickly search for gas leaks over large areas. One approach that has been considered for such applications is to install gas leak detection instrumentation on moving vehicles, as has been considered for example in US 3,107,517, US 3,444,721 and US 4,164,138. However, conventional methods for mobile gas leak detection suffer from severe deficiencies. Typically, these deficiencies include one or more of the following: 1) Difficulty distinguishing leaks from background; 2) Difficulty distinguishing leaks of the measured gas from other possible sources; and 3) Lack of estimates to the source of the leak distance. [0003] Therefore, overcoming these difficulties would be an advancement in the field. Contents of the invention [0004] The present method alleviates these difficult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/04F17D5/02
CPCG01N21/3504G01N21/01G01N21/39G01N2021/0314G01N2201/025G01M3/38G01M3/20G01N21/31
Inventor C·W·雷拉E·R·克罗森M·R·沃尔克S·M·谭
Owner PICARRO
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