JPS572402A - Structure of steam turbine rotor keyway - Google Patents

Structure of steam turbine rotor keyway

Info

Publication number
JPS572402A
JPS572402A JP7560480A JP7560480A JPS572402A JP S572402 A JPS572402 A JP S572402A JP 7560480 A JP7560480 A JP 7560480A JP 7560480 A JP7560480 A JP 7560480A JP S572402 A JPS572402 A JP S572402A
Authority
JP
Japan
Prior art keywords
keyway
steam turbine
turbine rotor
gap
rotor keyway
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
Application number
JP7560480A
Other languages
Japanese (ja)
Inventor
Kenichi Usami
Seishin Kirihara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7560480A priority Critical patent/JPS572402A/en
Publication of JPS572402A publication Critical patent/JPS572402A/en
Pending legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: To prevent a crack due to corrosion by forming a gap between a semicircular keyway and an inserted key material, particularly in a part where a concentrated stress in the keyway is high so that a steam and a dew may flow easily during an operation.
CONSTITUTION: A key material 5 is inserted into a semicircular keyway 4 in such a way as to form a gap at least in a part where a concentrated stress in the keyway is high, thereby restraining a corrosion as well as preventing a crack. It is desirable to make a gap of 0.15W0.2mm.
COPYRIGHT: (C)1982,JPO&Japio
JP7560480A 1980-06-06 1980-06-06 Structure of steam turbine rotor keyway Pending JPS572402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7560480A JPS572402A (en) 1980-06-06 1980-06-06 Structure of steam turbine rotor keyway

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7560480A JPS572402A (en) 1980-06-06 1980-06-06 Structure of steam turbine rotor keyway

Publications (1)

Publication Number Publication Date
JPS572402A true JPS572402A (en) 1982-01-07

Family

ID=13580972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7560480A Pending JPS572402A (en) 1980-06-06 1980-06-06 Structure of steam turbine rotor keyway

Country Status (1)

Country Link
JP (1) JPS572402A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217303A (en) * 1985-05-31 1987-01-26 ゼネラル・エレクトリツク・カンパニイ Ventilation system of key and keyway for turbine impeller
JPS6217302A (en) * 1985-05-31 1987-01-26 ゼネラル・エレクトリツク・カンパニイ Ventilation system of turbine part
US5031400A (en) * 1988-12-09 1991-07-16 Allied-Signal Inc. High temperature turbine engine structure
US5299915A (en) * 1992-07-15 1994-04-05 General Electric Corporation Bucket for the last stage of a steam turbine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217303A (en) * 1985-05-31 1987-01-26 ゼネラル・エレクトリツク・カンパニイ Ventilation system of key and keyway for turbine impeller
JPS6217302A (en) * 1985-05-31 1987-01-26 ゼネラル・エレクトリツク・カンパニイ Ventilation system of turbine part
US5031400A (en) * 1988-12-09 1991-07-16 Allied-Signal Inc. High temperature turbine engine structure
US5299915A (en) * 1992-07-15 1994-04-05 General Electric Corporation Bucket for the last stage of a steam turbine

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