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GB1080726A - Method and apparatus for testing the clearances at the tips of blades - Google Patents

Method and apparatus for testing the clearances at the tips of blades

Info

Publication number
GB1080726A
GB1080726A GB4348665A GB4348665A GB1080726A GB 1080726 A GB1080726 A GB 1080726A GB 4348665 A GB4348665 A GB 4348665A GB 4348665 A GB4348665 A GB 4348665A GB 1080726 A GB1080726 A GB 1080726A
Authority
GB
United Kingdom
Prior art keywords
tips
blades
casing
light
clearance
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.)
Expired
Application number
GB4348665A
Inventor
Peter William Bridge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB4348665A priority Critical patent/GB1080726A/en
Publication of GB1080726A publication Critical patent/GB1080726A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F01D21/04—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator or to breaking-off of a part of the rotor, e.g. indicating such position
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1,080,726. Optical apparatus. ROLLS ROYCE Ltd. Oct. 13, 1965, No.43486/65. Heading G2J. [Also in Division G1] The clearance between the tips of rotor blades and the rotor casing is measured by directing light towards the annular region between the tips and the casing so as to be reflected from the ends of the blades or partially obstructed by the passing tips and thereby be modulated by variations in length between the succeeding blades. The light is guided into the casing by a glass rod terminating in a prism within the casing or by a bundle of optical fibres, similar arrangements being used to conduct the light to detector or detectors. Individual fibres may be connected to individual detectors and the number receiving light is an indication of the size of the clearance.
GB4348665A 1965-10-13 1965-10-13 Method and apparatus for testing the clearances at the tips of blades Expired GB1080726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4348665A GB1080726A (en) 1965-10-13 1965-10-13 Method and apparatus for testing the clearances at the tips of blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4348665A GB1080726A (en) 1965-10-13 1965-10-13 Method and apparatus for testing the clearances at the tips of blades

Publications (1)

Publication Number Publication Date
GB1080726A true GB1080726A (en) 1967-08-23

Family

ID=10428958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4348665A Expired GB1080726A (en) 1965-10-13 1965-10-13 Method and apparatus for testing the clearances at the tips of blades

Country Status (1)

Country Link
GB (1) GB1080726A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197162A1 (en) * 1972-08-23 1974-03-22 Peter Udo
EP0004117A1 (en) * 1978-03-08 1979-09-19 SKF Industrial Trading & Development Co, B.V. Magnetic bearing system, comprising a servo-system for regulating the electromagnetic action of the bearing system, and electric motor coupled to the bearing system
US4180329A (en) * 1978-03-23 1979-12-25 The United States Of America As Represented By The Secretary Of The Air Force Single blade proximity probe
US4441817A (en) * 1980-07-29 1984-04-10 Diffracto Ltd. Electro-optical sensors with fiber optic bundles
US5079432A (en) * 1990-06-25 1992-01-07 Ampex Corporation Method and apparatus for measuring the displacement of an automatic scan tracking head
DE4041343A1 (en) * 1990-12-21 1992-06-25 Bmw Rolls Royce Gmbh Measuring turbine engine blade tip play - by detecting reflected light from blades and evaluating intensity time characteristic over blade
DE19601225C1 (en) * 1996-01-15 1997-06-19 Siemens Ag Device for monitoring the radial gap of a turbine
US6037581A (en) * 1996-01-15 2000-03-14 Siemens Aktiengesellschaft Device for recording a change in position at a turbine configuration
US7191665B2 (en) 2003-06-26 2007-03-20 Alstom Technology Ltd. Support for a reflective target
EP3816574A1 (en) * 2019-10-30 2021-05-05 General Electric Company System and method for optical measurements in a rotary machine
US11060847B2 (en) 2019-10-30 2021-07-13 General Electric Company System and method for optical measurements in a rotary machine
CN114034259A (en) * 2022-01-11 2022-02-11 成都中科翼能科技有限公司 Blade tip clearance measuring system and method based on double optical fiber probes
US11400527B2 (en) 2019-10-30 2022-08-02 General Electric Company System and method for machining a slot in an inner surface of a casing for a gas turbine engine
US11635750B2 (en) 2019-10-30 2023-04-25 General Electric Company System and method for removably inserting a sensor assembly into a compressor casing

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197162A1 (en) * 1972-08-23 1974-03-22 Peter Udo
EP0004117A1 (en) * 1978-03-08 1979-09-19 SKF Industrial Trading & Development Co, B.V. Magnetic bearing system, comprising a servo-system for regulating the electromagnetic action of the bearing system, and electric motor coupled to the bearing system
US4180329A (en) * 1978-03-23 1979-12-25 The United States Of America As Represented By The Secretary Of The Air Force Single blade proximity probe
US4441817A (en) * 1980-07-29 1984-04-10 Diffracto Ltd. Electro-optical sensors with fiber optic bundles
US5079432A (en) * 1990-06-25 1992-01-07 Ampex Corporation Method and apparatus for measuring the displacement of an automatic scan tracking head
DE4041343A1 (en) * 1990-12-21 1992-06-25 Bmw Rolls Royce Gmbh Measuring turbine engine blade tip play - by detecting reflected light from blades and evaluating intensity time characteristic over blade
WO1997026444A3 (en) * 1996-01-15 1997-10-02 Siemens Ag Device for monitoring radial gaps between a turbine housing and blade tips
WO1997026444A2 (en) * 1996-01-15 1997-07-24 Siemens Aktiengesellschaft Device for monitoring radial gaps between a turbine housing and blade tips
DE19601225C1 (en) * 1996-01-15 1997-06-19 Siemens Ag Device for monitoring the radial gap of a turbine
US6037581A (en) * 1996-01-15 2000-03-14 Siemens Aktiengesellschaft Device for recording a change in position at a turbine configuration
US7191665B2 (en) 2003-06-26 2007-03-20 Alstom Technology Ltd. Support for a reflective target
EP3816574A1 (en) * 2019-10-30 2021-05-05 General Electric Company System and method for optical measurements in a rotary machine
US11060847B2 (en) 2019-10-30 2021-07-13 General Electric Company System and method for optical measurements in a rotary machine
US11400527B2 (en) 2019-10-30 2022-08-02 General Electric Company System and method for machining a slot in an inner surface of a casing for a gas turbine engine
US11409022B2 (en) 2019-10-30 2022-08-09 General Electric Company System and method for optical measurements in a rotary machine
US11635750B2 (en) 2019-10-30 2023-04-25 General Electric Company System and method for removably inserting a sensor assembly into a compressor casing
US11925991B2 (en) 2019-10-30 2024-03-12 General Electric Company System and method for machining a slot in an inner surface of a casing for a gas turbine engine
CN114034259A (en) * 2022-01-11 2022-02-11 成都中科翼能科技有限公司 Blade tip clearance measuring system and method based on double optical fiber probes

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