EP3911943A1 - Boroskop zur optischen inspektion von gasturbinen - Google Patents
Boroskop zur optischen inspektion von gasturbinenInfo
- Publication number
- EP3911943A1 EP3911943A1 EP20702735.0A EP20702735A EP3911943A1 EP 3911943 A1 EP3911943 A1 EP 3911943A1 EP 20702735 A EP20702735 A EP 20702735A EP 3911943 A1 EP3911943 A1 EP 3911943A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensors
- image
- borescope
- image acquisition
- data
- 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.)
- Pending
Links
- 238000003780 insertion Methods 0.000 claims abstract description 12
- 230000037431 insertion Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000007781 pre-processing Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
- G01M11/081—Testing mechanical properties by using a contact-less detection method, i.e. with a camera
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/9515—Objects of complex shape, e.g. examined with use of a surface follower device
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination 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
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2484—Arrangements in relation to a camera or imaging device
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2492—Arrangements for use in a hostile environment, e.g. a very hot, cold or radioactive environment
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/08—Stereoscopic photography by simultaneous recording
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/323—Application in turbines in gas turbines for aircraft propulsion, e.g. jet engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/80—Diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/83—Testing, e.g. methods, components or tools therefor
-
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
- G01N2021/9542—Inspecting the inner surface of hollow bodies, e.g. bores using a probe
- G01N2021/9544—Inspecting the inner surface of hollow bodies, e.g. bores using a probe with emitter and receiver on the probe
Definitions
- the image capture sensors are preferably CCD sensors or CMOS sensors, preferably with global shutters.
- the image capture sensors preferably have a resolution of at least 400 x 400 pixels (for example up to 2400 x 2400 pixels), an image refresh rate of up to 240 images per second and / or an image field opening angle of 35 ° to 65 °, 90 ° or 120 °, preferably from 40 °, 50 ° or 60 °, in each case ⁇ 5 °, preferably in each case ⁇ 3 °.
- image acquisition sensors it is in particular also possible to continuously record image information which enables dynamic acquisition of components of a gas turbine, such as, for example, engine blades, which results, for example, from the rotation of one or more shafts of the gas turbine.
- the shaft of the boroscope can be rigid or flexible. If the shaft is flexible, the borescope can be guided through a guide tube.
- the guide tube can be part of the boroscope or a separate guide device.
- the basic position of the boroscope or its image acquisition unit can then be determined via the guide tube, a fine adjustment of the position and orientation of the image acquisition unit being achieved by moving and rotating the shaft relative to the guide tube.
- the position and orientation of the image acquisition unit inside a gas turbine can be read comparably from the part of the borescope protruding from the gas turbine.
- the borescope according to the invention can be used for the automatic 3D detection of engine blades, in which the borescope is guided in a controlled manner along a rotating engine stage and thereby detects the engine blades in three dimensions.
- Figure 1 is a schematic sectional view of an aircraft engine with two boroscopes according to the invention
- FIG. 2 shows a schematic partial view of the aircraft engine from FIG. 1 with the first boroscope according to the invention
- FIG. 3 a detailed view of the first boroscope according to the invention from FIGS. 1 and 2 introduced into the aircraft engine;
- FIG. 5a-c schematic representations of different embodiment variants of the boroscope from FIG. 3;
- Figure 6 schematic partial view of the second, in the
- Aircraft engine introduced boroscope according to Figure 1.
- FIG 1 a section through a two-shaft engine 1 is shown schematically, in which the fan 2 and the low-pressure compressor 3 are rotatably connected to the low-pressure door 5 via a first shaft 4, while the high-pressure compressor 6 is connected to the high-pressure turbine via a second shaft 7 8 is rotatably connected.
- the combustion chamber 9 is arranged between the high pressure compressor 6 and the high pressure door 8.
- the rigid borescope 10 is through a borescope opening in the
- the first borescope 10 from FIGS. 1 and 2 is shown in FIG. 3.
- the borescope 10 comprises an electronic image acquisition unit 12 as a borescope objective at one end of the shaft 13 provided for insertion into a borescope opening, which is rigid in the first borescope 10 and has a lateral opening in the region of the image acquisition unit 12.
- a handle 14 is provided, which is also suitable for connection to a guide device 30 (see FIG. 1).
- the shaft has an outside diameter of 7.6 mm.
- the image acquisition unit 12 can be completely accommodated in the shaft 13, it comprises - as shown in FIG. 4a - a package 16 of several ones arranged one above the other and interconnects 17, 17 '.
- the image capture sensors 18 are CMOS sensors with global shutter, which - due to the small size required - can only capture gray levels.
- an additional color sensor 19 is provided.
- the image capture sensors 18 have a resolution of 400 x 400 pixels, an image refresh rate of up to 240 images per second. For the color sensor 19, a lower resolution is often sufficient.
- a global shutter can be dispensed with for the color sensor 19 and a rolling shutter can be used, whereby the size of the color sensor 19 can be significantly reduced when it is implemented as a CMOS sensor.
- the two image capture sensors 18 and the color sensor 19 are designed such that they basically cover the same recording area 23.
- the receiving area 23 - as will be explained in more detail below with reference to FIG. 5 - can be freely defined in wide areas by suitable design of the receiving cone of the sensors 18, 19.
- lenses (not shown) can be provided directly on the sensors 18, 19.
- FIGS. 5a-c outline various design variants of the borescope 10 from FIG.
- the design variants have a fundamentally identical structure of the borescope 10 and differ from one another only by lenses glued onto the image acquisition sensors 18.
- the illustration in FIGS. 5a-c is therefore limited to the area of the boroscope 10 in which the image acquisition unit 12 is arranged.
- the lenses on the image acquisition sensors 18 are selected such that the axes 18 ′′ of the recording cone 18 ′ of the two image acquisition sensors 18 still run parallel to one another, but have a viewing angle of approximately 65 ° with respect to the axis of the shaft 13 in the insertion direction of the boroscope 10. In this way, areas lying in front of the borescope 10 in the insertion direction can be inspected, for example the blade root of the blades 6 'as shown in FIGS. 1 and 2.
- the second borescope 11 from FIG. 1 will now be described in more detail.
- the borescope 11 and the guide device 30 provided therefor are basically in accordance with
- the free end of the guide tube 31 inserted into the engine 1 is shown in more detail in FIG.
- the guide tube 31 is guided through the guide vanes of the high-pressure turbine 8.
- the borescope 11 protrudes from the guide tube 31.
- the flexible shaft 13 of the boroscope 11, which is pushed through the guide tube 31, is bent elastically at its insertion end in such a way that the area of the shaft 13 is angled with the image capturing unit 12 in the operating state, as shown, when the shaft 13 is retracted through the guide tube 31 but aligned coaxially with the guide tube 31.
- the image capturing unit 12 comprises two image capturing sensors 18 for capturing images suitable for triangulation.
- the image acquisition unit 12 can be configured in a manner comparable to the image acquisition unit 12 of the first boroscope 10, which is why reference is made to the above explanations for further explanation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019100821.2A DE102019100821A1 (de) | 2019-01-14 | 2019-01-14 | Boroskop zur optischen Inspektion von Gasturbinen |
PCT/EP2020/000008 WO2020148084A1 (de) | 2019-01-14 | 2020-01-14 | Boroskop zur optischen inspektion von gasturbinen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3911943A1 true EP3911943A1 (de) | 2021-11-24 |
Family
ID=69400519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20702735.0A Pending EP3911943A1 (de) | 2019-01-14 | 2020-01-14 | Boroskop zur optischen inspektion von gasturbinen |
Country Status (7)
Country | Link |
---|---|
US (1) | US11940351B2 (de) |
EP (1) | EP3911943A1 (de) |
JP (1) | JP2022518185A (de) |
CN (1) | CN113302479A (de) |
CA (1) | CA3124778A1 (de) |
DE (1) | DE102019100821A1 (de) |
WO (1) | WO2020148084A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB202106108D0 (en) * | 2021-04-30 | 2021-06-16 | Rolls Royce Plc | Turbine blade creep monitoring |
GB202106109D0 (en) * | 2021-04-29 | 2021-06-16 | Rolls Royce Plc | Turbine blade creep monitoring |
DE102021118371A1 (de) | 2021-07-15 | 2023-01-19 | Lufthansa Technik Aktiengesellschaft | Verfahren zur Unterstützung einer Bearbeitung einer Beschädigung an einer Beschaufelung einer Strömungsmaschine, insbesondere eines Strahltriebwerkes, Computerprogrammprodukt sowie System |
US11913345B2 (en) * | 2021-07-26 | 2024-02-27 | General Electric Company | System and method of using a tool assembly |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2880821B2 (ja) | 1991-04-03 | 1999-04-12 | 富士写真フイルム株式会社 | 測距用光学モジュール |
JP2002336188A (ja) * | 2001-05-21 | 2002-11-26 | Olympus Optical Co Ltd | 計測用内視鏡装置 |
US20040183900A1 (en) * | 2003-03-20 | 2004-09-23 | Everest Vit | Method and system for automatically detecting defects in remote video inspection applications |
JP4869699B2 (ja) * | 2005-12-13 | 2012-02-08 | オリンパス株式会社 | 内視鏡装置 |
GB0613576D0 (en) | 2006-07-10 | 2006-08-16 | Leuven K U Res & Dev | Endoscopic vision system |
DE102007008756A1 (de) * | 2007-02-22 | 2008-08-28 | Siemens Ag | Messkopf für ein Endoskop und Endoskop |
FR2920085B1 (fr) * | 2007-08-24 | 2012-06-15 | Univ Grenoble 1 | Systeme d'imagerie pour l'observation tridimensionnelle d'un champ operatoire |
US20100022824A1 (en) * | 2008-07-22 | 2010-01-28 | Cybulski James S | Tissue modification devices and methods of using the same |
DE102011114541A1 (de) | 2011-09-30 | 2013-04-04 | Lufthansa Technik Ag | Endoskopiesystem und korrespondierendesVerfahren zur Untersuchung von Gasturbinen |
CA2859998A1 (en) * | 2011-11-15 | 2013-05-23 | Naoki Suzuki | Photographic device and photographic system |
US9778141B2 (en) | 2012-01-31 | 2017-10-03 | Siemens Energy, Inc. | Video inspection system with deformable, self-supporting deployment tether |
JP2013218252A (ja) | 2012-03-14 | 2013-10-24 | Ricoh Co Ltd | カメラ装置、及び測距装置 |
US8836937B2 (en) | 2012-11-19 | 2014-09-16 | General Electric Company | Actuatable visual inspection device |
US20140207406A1 (en) | 2013-01-22 | 2014-07-24 | General Electric Company | Self-directed inspection plan |
DE202013004379U1 (de) * | 2013-05-13 | 2013-05-31 | Schölly Fiberoptic GmbH | Endoskop |
DE102013209956A1 (de) * | 2013-05-28 | 2014-12-04 | Xion Gmbh | Videoendoskopische Vorrichtung |
US20150062299A1 (en) * | 2013-08-30 | 2015-03-05 | The Regents Of The University Of California | Quantitative 3d-endoscopy using stereo cmos-camera pairs |
CN107851176A (zh) * | 2015-02-06 | 2018-03-27 | 阿克伦大学 | 光学成像系统及其方法 |
US9955088B2 (en) * | 2016-06-10 | 2018-04-24 | The Boeing Company | Hyperspectral borescope system |
DE102016113000A1 (de) * | 2016-07-14 | 2018-01-18 | Aesculap Ag | Endoskopische Vorrichtung und Verfahren zur endoskopischen Untersuchung |
GB2554794B (en) * | 2016-08-08 | 2019-06-26 | Google Llc | Monochrome-color mapping using a monochromatic imager and a color map sensor. |
US10666927B2 (en) * | 2017-03-15 | 2020-05-26 | Baker Hughes, A Ge Company, Llc | Method and device for inspection of an asset |
DE102017111306A1 (de) * | 2017-05-23 | 2018-11-29 | Karl Storz Se & Co. Kg | Endoskop |
DE102017218426B3 (de) | 2017-10-16 | 2019-01-17 | Lufthansa Technik Ag | Vorrichtung und Verfahren zur Boroskopinspektion von Strahltriebwerken |
-
2019
- 2019-01-14 DE DE102019100821.2A patent/DE102019100821A1/de active Pending
-
2020
- 2020-01-14 US US17/422,210 patent/US11940351B2/en active Active
- 2020-01-14 WO PCT/EP2020/000008 patent/WO2020148084A1/de unknown
- 2020-01-14 CA CA3124778A patent/CA3124778A1/en active Pending
- 2020-01-14 JP JP2021540291A patent/JP2022518185A/ja active Pending
- 2020-01-14 EP EP20702735.0A patent/EP3911943A1/de active Pending
- 2020-01-14 CN CN202080009107.6A patent/CN113302479A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2020148084A1 (de) | 2020-07-23 |
DE102019100821A1 (de) | 2020-07-16 |
CA3124778A1 (en) | 2020-07-23 |
JP2022518185A (ja) | 2022-03-14 |
US20220082473A1 (en) | 2022-03-17 |
CN113302479A (zh) | 2021-08-24 |
US11940351B2 (en) | 2024-03-26 |
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