System and method for online inspection of turbines using an optical tube with broadspectrum mirrors

Baleine, Erwan

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Title: System and method for online inspection of turbines using an optical tube with broadspectrum mirrors

Abstract

An optical inspection system for nondestructive internal visual inspection and non-contact infra-red (IR) temperature monitoring of an online, operating power generation turbine. The optical inspection system includes an optical tube having a viewing port, at least one reflective mirror or a mirror array having a reflectivity spectral range from 550 nm to 20 .mu.m, and capable of continuous operation at temperatures greater than 932 degrees Fahrenheit (500 degrees Celsius), and a transparent window with high transmission within the same spectral range mounted distal the viewing port. The same optical mirror array may be used to measure selectively surface temperature of metal turbine blades in the near IR range (approximately 1 .mu.m wavelength) and of thermal barrier coated turbine blades in the long IR range (approximately 10 .mu.m wavelength).

Inventors:: Baleine, Erwan

Issue Date:: 2015-12-22

Research Org.:: Siemens Energy, Inc., Orlando, FL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1233349

Patent Number(s):: 9217852

Application Number:: 13/597,919

Assignee:: Siemens Energy, Inc.

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

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G - PHYSICS G01 - MEASURING 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 infra-red, visible or ultra-violet light
G01N21/95 - characterised by the material or shape of the object to be examined
G01N21/954 - Inspecting the inner surface of hollow bodies, e.g. bores

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B17/0652 - {on-axis systems with at least one of the mirrors having a central aperture}
G02B23/2492 - {Arrangements for use in a hostile environment, e.g. a very hot, cold or radioactive environment}

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DOE Contract Number:: FC26-05NT42644

Resource Type:: Patent

Resource Relation:: Patent File Date: 2012 Aug 29

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Baleine, Erwan. System and method for online inspection of turbines using an optical tube with broadspectrum mirrors.  United States: N. p., 2015. 
        Web.

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                    Baleine, Erwan. System and method for online inspection of turbines using an optical tube with broadspectrum mirrors.  United States.

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                    Baleine, Erwan. Tue .  
        "System and method for online inspection of turbines using an optical tube with broadspectrum mirrors".  United States.  https://www.osti.gov/servlets/purl/1233349.

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@article{osti_1233349,

  title        = {System and method for online inspection of turbines using an optical tube with broadspectrum mirrors},

  author       = {Baleine, Erwan},

  abstractNote = {An optical inspection system for nondestructive internal visual inspection and non-contact infra-red (IR) temperature monitoring of an online, operating power generation turbine. The optical inspection system includes an optical tube having a viewing port, at least one reflective mirror or a mirror array having a reflectivity spectral range from 550 nm to 20 .mu.m, and capable of continuous operation at temperatures greater than 932 degrees Fahrenheit (500 degrees Celsius), and a transparent window with high transmission within the same spectral range mounted distal the viewing port. The same optical mirror array may be used to measure selectively surface temperature of metal turbine blades in the near IR range (approximately 1 .mu.m wavelength) and of thermal barrier coated turbine blades in the long IR range (approximately 10 .mu.m wavelength).},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2015},

  month        = {12}

}

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Works referenced in this record:

Reflective elements and sensors including reflective elements
patent, July 1984

Luke, Douglas V.
US Patent Document 4,459,043
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4459043

Optically transparent electrically conductive semiconductor windows
patent, July 1990

Biricik, V. Warren; Rowe, James M.; Kraatz, Paul
US Patent Document 4,939,043
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Reflecting mirror for a laser beam and laser beam welding apparatus, including the same laser beam reflecting mirror
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Hamada, Shoichi; Shirasu, Isao; Nagashima, Tadashi
US Patent Document 5,097,110
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Apparatus for attaching and detaching accessory of lens
patent, October 1995

Kikuchi, Katsumori
US Patent Document 5,461,445
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Lens holding structure
patent, September 1996

Tanaka, Hitoshi; Sato, Norio
US Patent Document 5,555,480
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5555480

High temperature gas stream optical flame sensor
patent, September 1997

Cusack, Diedre E.; Glasheen, William M.; Sacco, Jr., George P.
US Patent Document 5,670,784
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5670784

Method for repairing a thermal barrier coating
patent, March 1998

Nagaraj, Bangalore Aswatha; Mannava, Seetharamaiah; Gupta, Bhupendra K.
US Patent Document 5,723,078
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5723078

Simple system for endoscopic non-contact three-dimentional measurement
patent, October 2002

Schaack, David F.
US Patent Document 6,459,481
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6459481

System and method for online inspection of turbines including aspheric lens
patent, November 2014

Baleine, Erwan; Jonnalagadda, Vinay
US Patent Document 8,896,661
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8896661

On the Preparation of Hard Oxide Films with Precisely Controlled Thickness on Evaporated Aluminum Mirrors*
journal, January 1949

Hass, Georg
Journal of the Optical Society of America, Vol. 39, Issue 7
https://doi.org/10.1364/JOSA.39.000532

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Similar Records

Title: System and method for online inspection of turbines using an optical tube with broadspectrum mirrors

Abstract

Citation Formats

Reflective elements and sensors including reflective elements patent, July 1984

Optically transparent electrically conductive semiconductor windows patent, July 1990

Reflecting mirror for a laser beam and laser beam welding apparatus, including the same laser beam reflecting mirror patent, March 1992

Apparatus for attaching and detaching accessory of lens patent, October 1995

Lens holding structure patent, September 1996

High temperature gas stream optical flame sensor patent, September 1997

Method for repairing a thermal barrier coating patent, March 1998

Simple system for endoscopic non-contact three-dimentional measurement patent, October 2002

System and method for online inspection of turbines including aspheric lens patent, November 2014

On the Preparation of Hard Oxide Films with Precisely Controlled Thickness on Evaporated Aluminum Mirrors* journal, January 1949

Reflective elements and sensors including reflective elements
patent, July 1984

Optically transparent electrically conductive semiconductor windows
patent, July 1990

Reflecting mirror for a laser beam and laser beam welding apparatus, including the same laser beam reflecting mirror
patent, March 1992

Apparatus for attaching and detaching accessory of lens
patent, October 1995

Lens holding structure
patent, September 1996

High temperature gas stream optical flame sensor
patent, September 1997

Method for repairing a thermal barrier coating
patent, March 1998

Simple system for endoscopic non-contact three-dimentional measurement
patent, October 2002

System and method for online inspection of turbines including aspheric lens
patent, November 2014

On the Preparation of Hard Oxide Films with Precisely Controlled Thickness on Evaporated Aluminum Mirrors*
journal, January 1949