GB1194781A - Improvements in Multistage Axial Flow Machines of the Turbine Type - Google Patents

Improvements in Multistage Axial Flow Machines of the Turbine Type

Info

Publication number
GB1194781A
GB1194781A GB815368A GB815368A GB1194781A GB 1194781 A GB1194781 A GB 1194781A GB 815368 A GB815368 A GB 815368A GB 815368 A GB815368 A GB 815368A GB 1194781 A GB1194781 A GB 1194781A
Authority
GB
United Kingdom
Prior art keywords
rotor
blades
annular
stator
rings
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.)
Expired
Application number
GB815368A
Inventor
Henri Bruneau
Lieu Quang Dao
Andre Emile Duclos
Andre Rene Verniere
Ernest William Heybyrne
Sidney Frederick Shorney
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.)
Safran Aircraft Engines SAS
Rolls Royce PLC
Original Assignee
Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
SNECMA SAS
Rolls Royce PLC
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 Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA, SNECMA SAS, Rolls Royce PLC filed Critical Societe Nationale dEtude et de Construction de Moteurs dAviation SNECMA
Publication of GB1194781A publication Critical patent/GB1194781A/en
Expired 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • F01D5/323—Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor
    • 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
    • F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
    • 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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

1,194,781. Axial flow turbomachines. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Feb. 20, 1968 [Feb.27, 1967], No. 8153/68. Heading F1T. An axial flow multi-stage turbine or like machine has an undivided drum carrying the rotor blades and a stator formed from axially abutting undivided rings each carrying an annular series of stator blades, the stator blades terminating in shrouds which co-operate with platforms on the rotor blades radially outwards of their roots to form the radially inner boundary of the working fluid passing through the machine. In the case of a compressor, Figs. 1, 2, the undivided rotor drum 1 has radially thickened portions 3a each carrying an annular series of blades 5 by engagement of their roots 11 in axial slots 9. The roots 11 are locked in position axially by keys 24, the latter being held in position during assembly by rings 26 fitting in annular slots 25. Each blade 5 has a platform 15 spaced from its root by ribs 17, 19, adjacent platforms 15 co-operating with the annular shrouds 8 on the stator blades 4 to form the inner boundary of the flow path. The outer boundary is formed by undivided rings 6 which inter-fit at flanges 6a, 6b and support the respective series of stator blades 4. A further casing may surround the rings 6. Interstage leakage is reduced by a diametrically split annular member 18 bolted at 12, 14 to a rib 10 on each shroud 8 and co-operating with labyrinth projections 7 on the rotor drum 1. The ribs 17 prevent leakage between the blades 5 radially inwards of platforms 15. During assembly the rotor and stator are built up stage by stage in an axial direction from one end of the machine. In a modification, Fig. 3 (not shown), the stator shrouds 8 do not support annular sealing members 18 and interstage sealing is effected by ribs (30) carried by platforms 15 and co-operating with the shrouds 8. In a further modification, Figs. 4 to 6 (not shown), the labyrinth sealing projections are not formed directly on the rotor drum 1 but are formed on ring segments (40) fitting in axial slots (41) in the drum 1 between the rotor stages. The segments (40) have flanges (40a) to prevent leakage between adjacent rotor blade roots 11. In a still further modification, Figs. 7 to 9 (not shown), the labyrinth projections are formed on one piece rings (72) which have dogs (72a, 72b) engaging in annular recesses (71a 71b) in the rotor drum 1 adjacent the blade mounting slots 9.
GB815368A 1967-02-27 1968-02-20 Improvements in Multistage Axial Flow Machines of the Turbine Type Expired GB1194781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR96688A FR1534718A (en) 1967-02-27 1967-02-27 Improvements to axial flow turbo-machines

Publications (1)

Publication Number Publication Date
GB1194781A true GB1194781A (en) 1970-06-10

Family

ID=8626018

Family Applications (1)

Application Number Title Priority Date Filing Date
GB815368A Expired GB1194781A (en) 1967-02-27 1968-02-20 Improvements in Multistage Axial Flow Machines of the Turbine Type

Country Status (2)

Country Link
FR (1) FR1534718A (en)
GB (1) GB1194781A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190397A (en) * 1977-11-23 1980-02-26 General Electric Company Windage shield
EP0094529A1 (en) * 1982-05-10 1983-11-23 General Electric Company Rotor stabilizing labyrinth seals for steam turbines
US5320488A (en) * 1993-01-21 1994-06-14 General Electric Company Turbine disk interstage seal anti-rotation system
EP0710766A1 (en) * 1994-11-05 1996-05-08 ROLLS-ROYCE plc Integral disc seal

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526508A (en) * 1982-09-29 1985-07-02 United Technologies Corporation Rotor assembly for a gas turbine engine
FR2834751B1 (en) * 2002-01-17 2004-09-10 Snecma Moteurs ROTOR ARRANGEMENT OF A TURBOMACHINE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190397A (en) * 1977-11-23 1980-02-26 General Electric Company Windage shield
EP0094529A1 (en) * 1982-05-10 1983-11-23 General Electric Company Rotor stabilizing labyrinth seals for steam turbines
US5320488A (en) * 1993-01-21 1994-06-14 General Electric Company Turbine disk interstage seal anti-rotation system
EP0710766A1 (en) * 1994-11-05 1996-05-08 ROLLS-ROYCE plc Integral disc seal

Also Published As

Publication number Publication date
FR1534718A (en) 1968-08-02

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee