Light collection device for flame emission detectors

Woodruff, Stephen D; Logan, Ronald G; Pineault, Richard L

Title: Light collection device for flame emission detectors

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Abstract

A light collection device for use in a flame emission detection system such as an on-line, real-time alkali concentration process stream monitor is disclosed which comprises a sphere coated on its interior with a highly diffuse reflective paint which is positioned over a flame emission source, and one or more fiber optic cables which transfer the light generated at the interior of the sphere to a detecting device. The diffuse scattering of the light emitted by the flame uniformly distributes the light in the sphere, and the collection efficiency of the device is greater than that obtainable in the prior art. The device of the present invention thus provides enhanced sensitivity and reduces the noise associated with flame emission detectors, and can achieve substantial improvements in alkali detection levels.

Inventors:

Woodruff, Stephen D ^[1]; Logan, Ronald G ^[1]; Pineault, Richard L ^[1]

Morgantown, WV

Issue Date:: 1990-01-01

Research Org.:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)

OSTI Identifier:: 867445

Patent Number(s):: 4939376

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G01J5/08 - Optical features {
G01J5/0014 - {for sensing the radiation from gases, flames}
G01J5/0821 - {using optical fibers}
G01J5/0809 - {using plane or convex mirrors, parallel phase plates or particular reflectors}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/72 - using flame burners

G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G01J2001/0481 - {Preset integrating sphere or cavity}
G01J5/0815 - {using light concentrators, collectors or condensers}
G01J1/0425 - {using optical fibers}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2201/084 - Fibres for remote transmission

G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G01J5/0878 - {Diffusers}
G01J1/04 - Optical or mechanical part {supplementary adjustable parts}

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Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: light; collection; device; flame; emission; detectors; detection; on-line; real-time; alkali; concentration; process; stream; monitor; disclosed; comprises; sphere; coated; interior; highly; diffuse; reflective; paint; positioned; source; fiber; optic; cables; transfer; generated; detecting; scattering; emitted; uniformly; distributes; efficiency; obtainable; prior; provides; enhanced; sensitivity; reduces; noise; associated; achieve; substantial; improvements; levels; uniformly distribute; enhanced sensitivity; collection device; process stream; fiber optic; optic cable; light emitted; light generated; optic cables; collection efficiency; provides enhanced; flame emission; detecting device; light collection; substantial improvement; real-time alkali; /250/356/

Citation Formats


                    Woodruff, Stephen D, Logan, Ronald G, and Pineault, Richard L. Light collection device for flame emission detectors.  United States: N. p., 1990. 
        Web.

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                    Woodruff, Stephen D, Logan, Ronald G, & Pineault, Richard L. Light collection device for flame emission detectors.  United States.

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                    Woodruff, Stephen D, Logan, Ronald G, and Pineault, Richard L. Mon .  
        "Light collection device for flame emission detectors".  United States.  https://www.osti.gov/servlets/purl/867445.

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@article{osti_867445,

  title        = {Light collection device for flame emission detectors},

  author       = {Woodruff, Stephen D and Logan, Ronald G and Pineault, Richard L},

  abstractNote = {A light collection device for use in a flame emission detection system such as an on-line, real-time alkali concentration process stream monitor is disclosed which comprises a sphere coated on its interior with a highly diffuse reflective paint which is positioned over a flame emission source, and one or more fiber optic cables which transfer the light generated at the interior of the sphere to a detecting device. The diffuse scattering of the light emitted by the flame uniformly distributes the light in the sphere, and the collection efficiency of the device is greater than that obtainable in the prior art. The device of the present invention thus provides enhanced sensitivity and reduces the noise associated with flame emission detectors, and can achieve substantial improvements in alkali detection levels.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1990},

  month        = {1}

}

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