CA2169781A1 - Rotor Shaft for a Steam Turbine - Google Patents

Rotor Shaft for a Steam Turbine

Info

Publication number
CA2169781A1
CA2169781A1 CA 2169781 CA2169781A CA2169781A1 CA 2169781 A1 CA2169781 A1 CA 2169781A1 CA 2169781 CA2169781 CA 2169781 CA 2169781 A CA2169781 A CA 2169781A CA 2169781 A1 CA2169781 A1 CA 2169781A1
Authority
CA
Canada
Prior art keywords
steam turbine
rotor shaft
ratio
fabricated
weight
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
CA 2169781
Other languages
French (fr)
Other versions
CA2169781C (en
Inventor
Masao Siga
Yutaka Fukui
Mitsuo Kuriyama
Yoshimi Maeno
Hidefumi Kajiwara
Yasuo Watanabe
Shintaro Takahashi
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
Masao Siga
Yutaka Fukui
Mitsuo Kuriyama
Yoshimi Maeno
Hidefumi Kajiwara
Yasuo Watanabe
Shintaro Takahashi
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 Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Yoshimi Maeno, Hidefumi Kajiwara, Yasuo Watanabe, Shintaro Takahashi, Hitachi, Ltd. filed Critical Masao Siga
Priority claimed from CA002009120A external-priority patent/CA2009120C/en
Publication of CA2169781A1 publication Critical patent/CA2169781A1/en
Application granted granted Critical
Publication of CA2169781C publication Critical patent/CA2169781C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Steel (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

A rotor shaft for a steam turbine integrating high and low pressure portions, is fabricated from a Ni-Cr-Mo-V low alloy steel containing by weight 0.15 to 0.4% C, not more than 0.1% Si, 0.05 to 0.25% Mn, 1.5 to 2.5% Ni, 0.8 to 2.5% Cr, 0.8 to 2.5% Mo and 0.15 to 0.35% V. In this steel the ratio (Mn/Ni) is not more than 0.12 or the ratio(Si + Mn)/Ni is not more than 0.18.
CA002169781A 1989-02-03 1990-02-01 Rotor shaft for a steam turbine Expired - Lifetime CA2169781C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2389089 1989-02-03
JP01-023890 1989-02-03
JP12662289 1989-05-22
JP01-126622 1989-05-22
CA002009120A CA2009120C (en) 1989-02-03 1990-02-01 Steam turbine, rotor shaft thereof, and heat resisting steel

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002009120A Division CA2009120C (en) 1989-02-03 1990-02-01 Steam turbine, rotor shaft thereof, and heat resisting steel

Publications (2)

Publication Number Publication Date
CA2169781A1 true CA2169781A1 (en) 1990-08-04
CA2169781C CA2169781C (en) 1998-04-21

Family

ID=27168705

Family Applications (4)

Application Number Title Priority Date Filing Date
CA002169779A Expired - Lifetime CA2169779C (en) 1989-02-03 1990-02-01 Power generation system
CA002169780A Expired - Lifetime CA2169780C (en) 1989-02-03 1990-02-01 Steam turbine
CA002169781A Expired - Lifetime CA2169781C (en) 1989-02-03 1990-02-01 Rotor shaft for a steam turbine
CA002169782A Expired - Lifetime CA2169782C (en) 1989-02-03 1990-02-01 Heat resisting steel

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CA002169779A Expired - Lifetime CA2169779C (en) 1989-02-03 1990-02-01 Power generation system
CA002169780A Expired - Lifetime CA2169780C (en) 1989-02-03 1990-02-01 Steam turbine

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002169782A Expired - Lifetime CA2169782C (en) 1989-02-03 1990-02-01 Heat resisting steel

Country Status (1)

Country Link
CA (4) CA2169779C (en)

Also Published As

Publication number Publication date
CA2169781C (en) 1998-04-21
CA2169780C (en) 1998-04-21
CA2169780A1 (en) 1990-08-04
CA2169782A1 (en) 1990-08-04
CA2169782C (en) 1997-03-04
CA2169779A1 (en) 1990-08-04
CA2169779C (en) 1999-02-09

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