JPS5663220A - Monitor device for crack occurrence of turbine rotor - Google Patents

Monitor device for crack occurrence of turbine rotor

Info

Publication number
JPS5663220A
JPS5663220A JP13924279A JP13924279A JPS5663220A JP S5663220 A JPS5663220 A JP S5663220A JP 13924279 A JP13924279 A JP 13924279A JP 13924279 A JP13924279 A JP 13924279A JP S5663220 A JPS5663220 A JP S5663220A
Authority
JP
Japan
Prior art keywords
signal
turbine rotor
converter
analyzer
signals
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.)
Granted
Application number
JP13924279A
Other languages
Japanese (ja)
Other versions
JPS6223819B2 (en
Inventor
Kiyoshi Saito
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13924279A priority Critical patent/JPS5663220A/en
Publication of JPS5663220A publication Critical patent/JPS5663220A/en
Publication of JPS6223819B2 publication Critical patent/JPS6223819B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2693—Rotor or turbine parts

Landscapes

  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Control Of Turbines (AREA)

Abstract

PURPOSE: To ensure an assured detection of the signal produced by occurrence of the crack of the turbine rotor, by detecting the elastic wave discharge signal generated from the turbine rotor via the wide-band AE element and then comparing the frequency distribution signal of the elastic wave discharge signal with the freuency distribution signal of the normal mode in the beginning of operation.
CONSTITUTION: The following units are provided: the wide-band AE element 1 incorporating a radio trnasmitter attached to the turbine rotor; the receiver 2 which receives the signal from the element 1; the A/D converter 4 which converts the received electric signal into the digital signal; and the digital memory 5 which stores the output signal sent from the converter 4. In addition, the frequency analyzer 6 is provided to give a simultaneous frequency analysis to the signals sent from both the converter 4 and the memory 5, also with the comparator 7 which gives a comparison between the two signals delivered from the analyzer 6 and then decides level to the set value. And in case the deviation between the two signals C and B delivered from the analyzer 6 becomes larger than the set value, the alarming circuit 8 is actuated.
COPYRIGHT: (C)1981,JPO&Japio
JP13924279A 1979-10-30 1979-10-30 Monitor device for crack occurrence of turbine rotor Granted JPS5663220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13924279A JPS5663220A (en) 1979-10-30 1979-10-30 Monitor device for crack occurrence of turbine rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13924279A JPS5663220A (en) 1979-10-30 1979-10-30 Monitor device for crack occurrence of turbine rotor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP22476186A Division JPS6296701A (en) 1986-09-25 1986-09-25 Turbine rotor

Publications (2)

Publication Number Publication Date
JPS5663220A true JPS5663220A (en) 1981-05-29
JPS6223819B2 JPS6223819B2 (en) 1987-05-25

Family

ID=15240765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13924279A Granted JPS5663220A (en) 1979-10-30 1979-10-30 Monitor device for crack occurrence of turbine rotor

Country Status (1)

Country Link
JP (1) JPS5663220A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150859A (en) * 1982-03-03 1983-09-07 Hitachi Ltd Method and apparatus for diagnosing crack of rotor
JPS61284658A (en) * 1985-06-11 1986-12-15 Sumitomo Metal Ind Ltd Crack detector
JPS62282259A (en) * 1986-05-30 1987-12-08 Koyo Seiko Co Ltd Apparatus for foreseeing destruction by acoustic emission
JPS63304129A (en) * 1987-06-03 1988-12-12 Koyo Seiko Co Ltd Detecting device for abnormality of bearing
JP2011132953A (en) * 2009-12-22 2011-07-07 General Electric Co <Ge> Method and system for detecting crack on turbomachine blade
CN114746625A (en) * 2019-12-05 2022-07-12 西门子能源美国公司 Turbine blade health monitoring system for crack identification

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150859A (en) * 1982-03-03 1983-09-07 Hitachi Ltd Method and apparatus for diagnosing crack of rotor
JPH0315698B2 (en) * 1982-03-03 1991-03-01 Hitachi Ltd
JPS61284658A (en) * 1985-06-11 1986-12-15 Sumitomo Metal Ind Ltd Crack detector
JPS62282259A (en) * 1986-05-30 1987-12-08 Koyo Seiko Co Ltd Apparatus for foreseeing destruction by acoustic emission
JPS63304129A (en) * 1987-06-03 1988-12-12 Koyo Seiko Co Ltd Detecting device for abnormality of bearing
JP2011132953A (en) * 2009-12-22 2011-07-07 General Electric Co <Ge> Method and system for detecting crack on turbomachine blade
CN114746625A (en) * 2019-12-05 2022-07-12 西门子能源美国公司 Turbine blade health monitoring system for crack identification
CN114746625B (en) * 2019-12-05 2024-02-20 西门子能源美国公司 Turbine blade health monitoring system for crack identification

Also Published As

Publication number Publication date
JPS6223819B2 (en) 1987-05-25

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