JPS5799210A - Gas turbine rotor - Google Patents

Gas turbine rotor

Info

Publication number
JPS5799210A
JPS5799210A JP17459980A JP17459980A JPS5799210A JP S5799210 A JPS5799210 A JP S5799210A JP 17459980 A JP17459980 A JP 17459980A JP 17459980 A JP17459980 A JP 17459980A JP S5799210 A JPS5799210 A JP S5799210A
Authority
JP
Japan
Prior art keywords
bolts
bolt
wheel
stress
tight
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
JP17459980A
Other languages
Japanese (ja)
Other versions
JPS5848726B2 (en
Inventor
Sadao Umezawa
Kensho Matsuda
Yoshimi Sato
Fukuju Terunuma
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP17459980A priority Critical patent/JPS5848726B2/en
Publication of JPS5799210A publication Critical patent/JPS5799210A/en
Publication of JPS5848726B2 publication Critical patent/JPS5848726B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: To eliminate a slip among wheels of a gas turbine rotor composed of multiple wheels by alternately arranging binding bolts with the same coefficient of thermal expansion as that of the wheel and with the lower coefficient.
CONSTITUTION: 3 wheels 1 and a shaft 2 are bound tight by 8 bolts 3a and 8 bolts 3b alternately. A286, the same material as the wheel 1, is used for the bolt 3a, and heat resistant steel of Cr-Mo family with the lower coefficient of thermal expansion than A286 is used for the bolt 3b. The bolt 3a is bound as tight as possible within the extent that its binding stress does not exceed the permissible tensile stress σu,which is 0.5 times of its yield strength under a normal temperature and a non-operating condition. The bolt 3b is bound as tight as possible within the extent that its binding stress does not exceed σμ, estimating the shrinkage in the direction of the wheel axle caused by the wheel temperature and the centrifugal force under a normal operating condition. Accordingly, the average binding stress of both bolts never fall below the tensile stress σ1 which does not generate a slip.
COPYRIGHT: (C)1982,JPO&Japio
JP17459980A 1980-12-12 1980-12-12 gas turbine rotor Expired JPS5848726B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17459980A JPS5848726B2 (en) 1980-12-12 1980-12-12 gas turbine rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17459980A JPS5848726B2 (en) 1980-12-12 1980-12-12 gas turbine rotor

Publications (2)

Publication Number Publication Date
JPS5799210A true JPS5799210A (en) 1982-06-19
JPS5848726B2 JPS5848726B2 (en) 1983-10-31

Family

ID=15981381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17459980A Expired JPS5848726B2 (en) 1980-12-12 1980-12-12 gas turbine rotor

Country Status (1)

Country Link
JP (1) JPS5848726B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007132352A (en) * 2005-11-11 2007-05-31 General Electric Co <Ge> Stacked reaction steam turbine rotor assembly
CN105436454A (en) * 2015-12-18 2016-03-30 武昌船舶重工集团有限公司 Method for calculating tensile stress in cross section of large/medium-sized vertical centrifugal casting type metal sleeve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007132352A (en) * 2005-11-11 2007-05-31 General Electric Co <Ge> Stacked reaction steam turbine rotor assembly
US7537430B2 (en) * 2005-11-11 2009-05-26 General Electric Company Stacked reaction steam turbine rotor assembly
CN1963155B (en) 2005-11-11 2011-06-08 通用电气公司 Stacked steam turbine rotor assembly
CN105436454A (en) * 2015-12-18 2016-03-30 武昌船舶重工集团有限公司 Method for calculating tensile stress in cross section of large/medium-sized vertical centrifugal casting type metal sleeve

Also Published As

Publication number Publication date
JPS5848726B2 (en) 1983-10-31

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