GB1138272A - Improvements in sealing means for axial flow compressor discharge - Google Patents

Improvements in sealing means for axial flow compressor discharge

Info

Publication number
GB1138272A
GB1138272A GB3678/67A GB367867A GB1138272A GB 1138272 A GB1138272 A GB 1138272A GB 3678/67 A GB3678/67 A GB 3678/67A GB 367867 A GB367867 A GB 367867A GB 1138272 A GB1138272 A GB 1138272A
Authority
GB
United Kingdom
Prior art keywords
ring
pressure
rotor plate
bearing
springs
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
GB3678/67A
Inventor
Clinton Clark Moore
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1138272A publication Critical patent/GB1138272A/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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
    • F16J15/342—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities with means for feeding fluid directly to the face
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3448—Pressing means the pressing force resulting from fluid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

1,138,272. Mechanical seals. GENERAL ELECTRIC CO. 25 Jan., 1967 [27 April, 1966], No. 3678/67. Heading F2B. [Also in Division F1] A seal between a compressor rotor and a stationary frame member 32 of a gas turbine comprises a chamber 60 open to the compressor discharge, an axially-movable ring 46 provided with a primary sealing tooth 52, and an air bearing 63, the arrangement being such that when the ring is moved towards a rotor plate 36 by the pressure of the compressor discharge the air bearing controls the spacing between the tooth and the rotor plate and when the discharge pressure falls below a given level, the ring is retracted by springs 78. The ring 46 is moved towards the rotor plate 36 by a pressure differential on opposite sides of a flange 54 and by the pressure in expansion chambers 68 which are connected to the chamber 60 by passageways 66 and provided with pistons 64. Air to the bearing 63 is fed through holes 72, the space between the bearing and tooth 52 being vented to atmospheric pressure through bores 74, 76. In the event of failure of the function of the air bearing 63, a secondary seal 56 prevents excessive leakage and a layer of sacrificial low melting point metal protects the ring 46 which is limited in its movement by the solid height of the springs 78. A split ring 62 prevents leakage of air past the ring 46. In a modification, Fig. 5 (not shown), the ring (46<SP>1</SP>) is moved towards the rotor plate (36) only by a pressure differential on opposite sides of a flange (54<SP>1</SP>); the split ring (62<SP>1</SP>) in this case is provided with springs to ensure sealing at low pressures in the chamber (60).
GB3678/67A 1966-04-27 1967-01-25 Improvements in sealing means for axial flow compressor discharge Expired GB1138272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545611A US3383033A (en) 1966-04-27 1966-04-27 Sealing means for axial flow compressor discharge

Publications (1)

Publication Number Publication Date
GB1138272A true GB1138272A (en) 1968-12-27

Family

ID=24176889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3678/67A Expired GB1138272A (en) 1966-04-27 1967-01-25 Improvements in sealing means for axial flow compressor discharge

Country Status (5)

Country Link
US (1) US3383033A (en)
BE (1) BE693208A (en)
DE (1) DE1628263A1 (en)
FR (1) FR1516087A (en)
GB (1) GB1138272A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143598A (en) * 1983-07-21 1985-02-13 Mtu Muenchen Gmbh Separating particles from leakage gas flows

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1149326A (en) * 1968-01-18 1969-04-23 Rolls Royce Sealing device
US3501245A (en) * 1968-03-04 1970-03-17 Avco Corp Seal assemblies
US3501089A (en) * 1968-07-17 1970-03-17 Gen Electric Jet pump ejector
US3529906A (en) * 1968-10-30 1970-09-22 Westinghouse Electric Corp Static seal structure
US4375891A (en) * 1980-05-10 1983-03-08 Rolls-Royce Limited Seal between a turbine rotor of a gas turbine engine and associated static structure of the engine
GB2092242B (en) * 1981-01-31 1984-12-19 Rolls Royce Non-contacting gas seal
US4916892A (en) * 1988-05-06 1990-04-17 General Electric Company High pressure seal
US5284347A (en) * 1991-03-25 1994-02-08 General Electric Company Gas bearing sealing means
US5174584A (en) * 1991-07-15 1992-12-29 General Electric Company Fluid bearing face seal for gas turbine engines
CA2076120A1 (en) * 1991-09-11 1993-03-12 Adam Nelson Pope System and method for improved engine cooling
US5292138A (en) * 1992-09-21 1994-03-08 General Elecric Company Rotor to rotor split ring seal
US7044470B2 (en) * 2000-07-12 2006-05-16 Perkinelmer, Inc. Rotary face seal assembly
US6761034B2 (en) * 2000-12-08 2004-07-13 General Electroc Company Structural cover for gas turbine engine bolted flanges
FR2831637B1 (en) * 2001-10-25 2004-01-30 Snecma Moteurs TWIN CONCENTRIC LIPSTICK GASKET
US6758477B2 (en) * 2002-03-26 2004-07-06 General Electric Company Aspirating face seal with axially biasing one piece annular spring
US6932567B2 (en) * 2002-12-19 2005-08-23 General Electric Company Method and apparatus for controlling fluid leakage through gas turbine engines
US20070235946A9 (en) * 2004-05-28 2007-10-11 Garrison Glenn M Air riding seal
US7938402B2 (en) * 2004-05-28 2011-05-10 Stein Seal Company Air riding seal
WO2007047104A1 (en) * 2005-10-11 2007-04-26 Stein Seal Company Shutdown seal for reactor coolant pump
US7780399B1 (en) 2006-01-12 2010-08-24 Stein Seal Company Reverse pressure double dam face seal
US20070253809A1 (en) * 2006-05-01 2007-11-01 General Electric Company Methods and apparatus for assembling gas turbine engines
US20080018054A1 (en) * 2006-07-20 2008-01-24 General Electric Company Aspirating labyrinth seal
US8206083B2 (en) * 2007-01-26 2012-06-26 Stein Seal Company Carbon hydrostatic face seal
US7797941B2 (en) 2007-10-26 2010-09-21 United Technologies Corporation Gas turbine engine systems involving hydrostatic face seals
US8479488B2 (en) * 2009-07-27 2013-07-09 General Electric Company Oxyfuel gas turbine system and method
US8641366B1 (en) * 2013-03-07 2014-02-04 United Technologies Corporation Non-contacting seals for geared gas turbine engine bearing compartments
US10443443B2 (en) 2013-03-07 2019-10-15 United Technologies Corporation Non-contacting seals for geared gas turbine engine bearing compartments
US9416674B1 (en) * 2013-05-02 2016-08-16 S&J Design Llc Floating air riding seal for a turbine
DE102013222514A1 (en) * 2013-11-06 2015-05-07 MTU Aero Engines AG Sealing arrangement for a turbomachine
US9291067B2 (en) * 2013-11-11 2016-03-22 General Electric Company Rotary machine aspirating seal assembly and method of assembling the same
US10428673B2 (en) 2016-05-02 2019-10-01 General Electric Company Aspirating face seal assembly and a method of operating the same
US10359117B2 (en) * 2017-03-06 2019-07-23 General Electric Company Aspirating face seal with non-coiled retraction springs
US10329938B2 (en) * 2017-05-31 2019-06-25 General Electric Company Aspirating face seal starter tooth abradable pocket
US10711629B2 (en) 2017-09-20 2020-07-14 Generl Electric Company Method of clearance control for an interdigitated turbine engine
US10458267B2 (en) 2017-09-20 2019-10-29 General Electric Company Seal assembly for counter rotating turbine assembly
US11041398B2 (en) * 2018-06-08 2021-06-22 Pratt & Whitney Canada Corp. Controlled gap seal with surface discontinuities
US11118469B2 (en) 2018-11-19 2021-09-14 General Electric Company Seal assembly for a turbo machine
CN109505773B (en) * 2018-12-28 2023-09-08 中国船舶重工集团公司第七0三研究所 Helium low-pressure compressor integral sealing structure
US11428160B2 (en) 2020-12-31 2022-08-30 General Electric Company Gas turbine engine with interdigitated turbine and gear assembly
CN114215789A (en) * 2021-12-06 2022-03-22 中国航发沈阳发动机研究所 Air entraining structure of double-layer casing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR716811A (en) * 1931-05-08 1931-12-28 Henri Et Maurice Farman Soc Enhancements to high speed driven centrifugal compressors
US2326824A (en) * 1940-11-16 1943-08-17 Wright Aeronautical Corp Oil seal
US2686657A (en) * 1947-08-02 1954-08-17 United Aircraft Corp Diaphragm seal for turbines
US2925290A (en) * 1956-05-16 1960-02-16 Garrett Corp Self-equalizing seal for a rotating shaft
US3118593A (en) * 1961-05-03 1964-01-21 Rolls Royce Fluid flow machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143598A (en) * 1983-07-21 1985-02-13 Mtu Muenchen Gmbh Separating particles from leakage gas flows

Also Published As

Publication number Publication date
BE693208A (en) 1967-07-03
DE1628263A1 (en) 1970-05-06
FR1516087A (en) 1968-03-08
US3383033A (en) 1968-05-14

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