JPS57146001A - Turbine rotor - Google Patents

Turbine rotor

Info

Publication number
JPS57146001A
JPS57146001A JP3154081A JP3154081A JPS57146001A JP S57146001 A JPS57146001 A JP S57146001A JP 3154081 A JP3154081 A JP 3154081A JP 3154081 A JP3154081 A JP 3154081A JP S57146001 A JPS57146001 A JP S57146001A
Authority
JP
Japan
Prior art keywords
nozzle
ring
labyrinth
grooves
turbine
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
JP3154081A
Other languages
Japanese (ja)
Inventor
Hideo Nomoto
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 JP3154081A priority Critical patent/JPS57146001A/en
Publication of JPS57146001A publication Critical patent/JPS57146001A/en
Pending 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
    • F01D11/025—Seal clearance control; Floating assembly; Adaptation means to differential thermal dilatations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE:To make it possible to provide many nozzle labyrinth grooves and fins without elongation of spans between wheels by fitting a ring with grooves on its outer peripheral surface opposite to nozzle labyrinths between wheels of a rotor. CONSTITUTION:Each stage of a steam turbine consists of buckets 2 and nozzles 5 fixed on a casing 4. The buckets 2 are mounted on the periphery of a wheel 6 which is of one-piece construction with the turbine shaft 1. The nozzles 5 are composed of a plural number of nozzle plates 11 fixed between an outer ring 9 and an inner ring 10 of a nozzle diaphram and nozzle labyrinth packings 12 are provided between the inner ring 10 and the turbine shaft 1 to prevent steam leakage. A hollow ring 19 on which a plural number of nozzle labyrinth grooves 20 are formed on its outer peripheral surface is provided independent of the turbine rotor 3 and is fitted snugly into a pair of recess grooves 21 on the turbine shaft 1 with a tongue 23 provided on each side of the hollow ring. This hollow ring 19 constitutes the nozzle labyrinth packing 12 together with a labyrinth ring 13 with fins 14a, 14b.
JP3154081A 1981-03-05 1981-03-05 Turbine rotor Pending JPS57146001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3154081A JPS57146001A (en) 1981-03-05 1981-03-05 Turbine rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3154081A JPS57146001A (en) 1981-03-05 1981-03-05 Turbine rotor

Publications (1)

Publication Number Publication Date
JPS57146001A true JPS57146001A (en) 1982-09-09

Family

ID=12334017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3154081A Pending JPS57146001A (en) 1981-03-05 1981-03-05 Turbine rotor

Country Status (1)

Country Link
JP (1) JPS57146001A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02173302A (en) * 1988-12-23 1990-07-04 Fuji Electric Co Ltd Seal-fin mechanism at blade end of geothermal steam turbine static blade
JP2004360695A (en) * 2003-06-03 2004-12-24 General Electric Co <Ge> Seal assembly of turbo machine and its assembling method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02173302A (en) * 1988-12-23 1990-07-04 Fuji Electric Co Ltd Seal-fin mechanism at blade end of geothermal steam turbine static blade
JP2004360695A (en) * 2003-06-03 2004-12-24 General Electric Co <Ge> Seal assembly of turbo machine and its assembling method

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