GB839325A - Improvements in and relating to stator casings for gas turbines - Google Patents

Improvements in and relating to stator casings for gas turbines

Info

Publication number
GB839325A
GB839325A GB24803/56A GB2480356A GB839325A GB 839325 A GB839325 A GB 839325A GB 24803/56 A GB24803/56 A GB 24803/56A GB 2480356 A GB2480356 A GB 2480356A GB 839325 A GB839325 A GB 839325A
Authority
GB
United Kingdom
Prior art keywords
segments
stator casing
tips
stator
casing
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
GB24803/56A
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.)
Anstalt fuer Stroemungsmaschinen GmbH
Original Assignee
Anstalt fuer Stroemungsmaschinen GmbH
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 Anstalt fuer Stroemungsmaschinen GmbH filed Critical Anstalt fuer Stroemungsmaschinen GmbH
Publication of GB839325A publication Critical patent/GB839325A/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
    • 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
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator

Landscapes

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

Abstract

839,325. Turbine stator casings. ANSTALT FUR STROMUNGSMASCHINEN G.m.b.H. Aug. 14, 1956 [Aug. 18, 1955], No. 24803/56. Class 110 (3). In a stator casing for a gas turbine, abradable sealing segments of high heat-resisting quality are mounted in either circumferentially closely spaced axially-extending grooves, or in a circumferentially-extending annular groove, formed on the inner surface of the stator casing, the sealing segments being disposed opposite the tips of a row of rotor blades. In Figs. 1 and 2, the stator casing 1 is formed on its inner surface with axially extending undercut recesses 3 in which engage sealing segments 4, the ends of the segments being shaped to correspond with the sides of the recesses 3. The segments are locked against axial movement by means of side plates 6 secured to the casing. The segments surround the tips of rotor blades 2 and are formed of abradable material such as graphite, sintered metal, bronze, copper, plastic with iron filings embedded therein, plastic or ceramic material so that in the event of the blade tips touching the segments in operation, the segments will be worn away by the blade tips so as to restore the clearance. In Fig. 4, the segments are provided with mounting portions 7 which are adapted to engage a circumferential groove formed in the stator casing. The face of the segment is curved convexly in the direction of flow of the working fluid and the surface is also formed with serrations extending transversely to the direction of flow of the turbine working fluid.
GB24803/56A 1955-08-18 1956-08-14 Improvements in and relating to stator casings for gas turbines Expired GB839325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT351142X 1955-08-18

Publications (1)

Publication Number Publication Date
GB839325A true GB839325A (en) 1960-06-29

Family

ID=3672441

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24803/56A Expired GB839325A (en) 1955-08-18 1956-08-14 Improvements in and relating to stator casings for gas turbines

Country Status (4)

Country Link
CH (1) CH351142A (en)
DE (1) DE1057827B (en)
FR (1) FR1189849A (en)
GB (1) GB839325A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947145A (en) * 1974-10-07 1976-03-30 Westinghouse Electric Corporation Gas turbine stationary shroud seals
FR2595759A1 (en) * 1986-01-10 1987-09-18 Gen Electric RING AND SEGMENT OF RING FORMING SHIELD FOR CONTROLLING THE GAME AT THE UPPER ENDS OF THE AUBES OF A ROTOR OF TURBINE
EP1944474A3 (en) * 2007-01-03 2009-03-25 United Technologies Corporation Gas turbine shroud seal and corresponding gas turbine engine
EP2687684A1 (en) * 2012-07-17 2014-01-22 MTU Aero Engines GmbH Abradable coating with spiral grooves in a turbomachine
EP3708785A3 (en) * 2019-03-13 2020-09-30 United Technologies Corporation Boas carrier with dovetail attachments

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239525B (en) * 1962-12-03 1967-04-27 Licentia Gmbh Flow machine blade, especially for gas turbines
US4239452A (en) * 1978-06-26 1980-12-16 United Technologies Corporation Blade tip shroud for a compression stage of a gas turbine engine
FR2470269A1 (en) * 1979-11-27 1981-05-29 Snecma RETENTION STRUCTURE FOR A COMPRESSOR CASE OF A TURBOMACHINE
CA1158563A (en) * 1981-01-27 1983-12-13 Ulo Okapuu Circumferentially grooved shroud liner
US4460316A (en) * 1982-12-29 1984-07-17 Westinghouse Electric Corp. Blade group with pinned root
FR2540939A1 (en) * 1983-02-10 1984-08-17 Snecma SEALING RING FOR A TURBINE ROTOR OF A TURBOMACHINE AND TURBOMACHINE INSTALLATION PROVIDED WITH SUCH RINGS
FR2576637B1 (en) * 1985-01-30 1988-11-18 Snecma GAS TURBINE RING.
DE19915049A1 (en) 1999-04-01 2000-10-05 Abb Alstom Power Ch Ag Heat shield for a gas turbine
US6514041B1 (en) 2001-09-12 2003-02-04 Alstom (Switzerland) Ltd Carrier for guide vane and heat shield segment
EP2204548A1 (en) 2009-01-06 2010-07-07 ABB Turbo Systems AG Exhaust gas turbine with shroud and corresponding exhaust turbocharger

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185427C (en) * 1904-11-17 1907-06-11
FR379209A (en) * 1906-07-03 1907-10-29 Sebastian Ziani De Ferranti Improvements to elastic fluid turbines
AT81851B (en) * 1911-02-20 1920-12-10 Sebastian Ziani De Fe Ferranti Lider for blade rings of steam turbines. Lider for blade rings of steam turbines.
GB235171A (en) * 1924-06-05 1926-01-14 Jan Kieswetter Improvements in or relating to packing means in steam, gas or other turbines
GB651237A (en) * 1947-12-17 1951-03-14 Packard Motor Car Co Turbine construction for a turbo-jet engine
DE852789C (en) * 1951-02-08 1952-10-20 Maschf Augsburg Nuernberg Ag Guide vane carrier for axial turbines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947145A (en) * 1974-10-07 1976-03-30 Westinghouse Electric Corporation Gas turbine stationary shroud seals
FR2595759A1 (en) * 1986-01-10 1987-09-18 Gen Electric RING AND SEGMENT OF RING FORMING SHIELD FOR CONTROLLING THE GAME AT THE UPPER ENDS OF THE AUBES OF A ROTOR OF TURBINE
EP1944474A3 (en) * 2007-01-03 2009-03-25 United Technologies Corporation Gas turbine shroud seal and corresponding gas turbine engine
US9039358B2 (en) 2007-01-03 2015-05-26 United Technologies Corporation Replaceable blade outer air seal design
EP2687684A1 (en) * 2012-07-17 2014-01-22 MTU Aero Engines GmbH Abradable coating with spiral grooves in a turbomachine
EP3708785A3 (en) * 2019-03-13 2020-09-30 United Technologies Corporation Boas carrier with dovetail attachments
US11761343B2 (en) 2019-03-13 2023-09-19 Rtx Corporation BOAS carrier with dovetail attachments

Also Published As

Publication number Publication date
FR1189849A (en) 1959-10-07
CH351142A (en) 1960-12-31
DE1057827B (en) 1959-05-21

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