GB806815A - Turbine blade shroud rings - Google Patents

Turbine blade shroud rings

Info

Publication number
GB806815A
GB806815A GB976056A GB976056A GB806815A GB 806815 A GB806815 A GB 806815A GB 976056 A GB976056 A GB 976056A GB 976056 A GB976056 A GB 976056A GB 806815 A GB806815 A GB 806815A
Authority
GB
United Kingdom
Prior art keywords
sector
casing
shroud ring
bolt
sleeve
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
GB976056A
Inventor
Basil Thomas George Bishop
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.)
Napier Turbochargers Ltd
Original Assignee
D Napier and Son 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
Priority to BE556215D priority Critical patent/BE556215A/xx
Application filed by D Napier and Son Ltd filed Critical D Napier and Son Ltd
Priority to GB976056A priority patent/GB806815A/en
Priority to CH338328D priority patent/CH338328A/en
Priority to DEN13451A priority patent/DE1116685B/en
Publication of GB806815A publication Critical patent/GB806815A/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
    • 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
    • F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
    • F01D11/16—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means
    • F01D11/18—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion

Landscapes

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

Abstract

806,815. Turbine stator casings. NAPIER & SON Ltd., D. March 18, 1957 [March 28, 1956], No. 9760/56. Class 110 (3). A turbine comprises a casing having a shroud ring for a row of rotor blades disposed therein, the shroud ring being in the form of a series of separate arcuate, circumferentially-extending sections each connected to the casing by a device which allows for different relative thermal expansions of the associated parts whereby the radial clearance between the shroud ring and the rotor blades is maintained substantially at its designed value. The turbine shown comprises a rotor 11 carrying blades 13, and a casing 10 supporting inlet guide vanes 16 and interstage guide vanes 15, the casing also supporting a shroud ring which surrounds the tips of the rotor blades 13. The shroud ring comprises a series of arcuate sections 17 each of channel-section, as shown in Fig. 1 and closed at the ends as shown in Fig. 2. The closure 21 at one end of the section is bored and screwed and a hollow screwed bolt 25 is engaged therein, the bolt 25 being of steel having a high coefficient of thermal expansion (e.g. 22.7 Î 10<SP>-6</SP> per ‹ C.). The bolt 25 extends outwardly through an opening in the stator casing 10 and has secured to its outer end by means of a screwed collar 27 and cap 28 a sleeve 29 which is formed of steel having a low coefficient of thermal expansion (e.g. 4.8Î10<SP>-6</SP> per ‹ C.). The sleeve 29 is rigidly secured at its inner end to the casing 10. The bolt 25 and the sleeve 29 are a free fit on one another to permit relative movement. The adjacent ends of the shroud ring sectors 17 are stepped at 30, 31 so that the free end 31 of a sector is supported in the radial direction by the fixed end 30 of the adjacent sector with freedom for circumferential expansion. Alternatively, the adjacent ends of the sectors may be slotted tangentially and keys engaged in the slots so as to locate the free end of a sector radially but with freedom for circumferential expansion. A sheet-metal baffle 32 is mounted in each ring sector 17 to guide cooling air supplied from the space 33 through the passage 34 adjacent the outer surface of the sector, the air finally discharging into the working fluid stream through the opening 35. The bore in the end closure 21 of the sector permits hot gas from the working fluid stream to flow to the cavity 26 within the bolt 25. Specification 785,466 is referred to.
GB976056A 1956-03-28 1956-03-28 Turbine blade shroud rings Expired GB806815A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE556215D BE556215A (en) 1956-03-28
GB976056A GB806815A (en) 1956-03-28 1956-03-28 Turbine blade shroud rings
CH338328D CH338328A (en) 1956-03-28 1957-03-19 Axial flow turbo machine
DEN13451A DE1116685B (en) 1956-03-28 1957-03-22 Radial blade gap seal for hot steam or hot gas turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB976056A GB806815A (en) 1956-03-28 1956-03-28 Turbine blade shroud rings

Publications (1)

Publication Number Publication Date
GB806815A true GB806815A (en) 1958-12-31

Family

ID=9878254

Family Applications (1)

Application Number Title Priority Date Filing Date
GB976056A Expired GB806815A (en) 1956-03-28 1956-03-28 Turbine blade shroud rings

Country Status (4)

Country Link
BE (1) BE556215A (en)
CH (1) CH338328A (en)
DE (1) DE1116685B (en)
GB (1) GB806815A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244523A (en) * 1990-05-31 1991-12-04 Gen Electric Gas turbine shroud assembly
US6179557B1 (en) 1998-07-18 2001-01-30 Rolls-Royce Plc Turbine cooling
GB2395756A (en) * 2002-11-27 2004-06-02 Rolls Royce Plc Cooled gas turbine shroud
RU2493388C1 (en) * 2012-03-27 2013-09-20 Открытое акционерное общество Конструкторско-производственное предприятие "Авиамотор" Seal of gas turbine engine combustion chamber-to-stator joint

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239889B (en) * 1963-06-28 1967-05-03 Licentia Gmbh Inlet guide vane ring for axial turbines, in particular axial gas turbines, with radially resiliently pressed ring segments
DE1286810B (en) * 1963-11-19 1969-01-09 Licentia Gmbh Rotor blade radial gap cover ring of an axial turbine machine, in particular a gas turbine
US3800864A (en) * 1972-09-05 1974-04-02 Gen Electric Pin-fin cooling system
FR2577281B1 (en) * 1985-02-13 1987-03-20 Snecma TURBOMACHINE HOUSING ASSOCIATED WITH A DEVICE FOR ADJUSTING THE GAP BETWEEN MOBILE BLADES AND HOUSING
FR2852053B1 (en) * 2003-03-06 2007-12-28 Snecma Moteurs HIGH PRESSURE TURBINE FOR TURBOMACHINE
RU2490478C2 (en) * 2011-10-11 2013-08-20 Открытое акционерное общество "Научно-производственное объединение "Сатурн" (ОАО "НПО "Сатурн") Turbomachine stator
CN111396137A (en) * 2020-04-29 2020-07-10 北京动力机械研究所 High-efficient axial compressor turbine suitable for inert mixed working medium

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB629770A (en) * 1947-11-21 1949-09-28 Napier & Son Ltd Improvements in or relating to sealing rings for turbines
DE852789C (en) * 1951-02-08 1952-10-20 Maschf Augsburg Nuernberg Ag Guide vane carrier for axial turbines
US2858104A (en) * 1954-02-04 1958-10-28 A V Roe Canada Ltd Adjustable gas turbine shroud ring segments

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244523A (en) * 1990-05-31 1991-12-04 Gen Electric Gas turbine shroud assembly
US5127793A (en) * 1990-05-31 1992-07-07 General Electric Company Turbine shroud clearance control assembly
GB2244523B (en) * 1990-05-31 1993-09-08 Gen Electric Turbine shroud assembly
US6179557B1 (en) 1998-07-18 2001-01-30 Rolls-Royce Plc Turbine cooling
GB2395756A (en) * 2002-11-27 2004-06-02 Rolls Royce Plc Cooled gas turbine shroud
GB2395756B (en) * 2002-11-27 2006-02-08 Rolls Royce Plc Cooled turbine assembly
US7147431B2 (en) 2002-11-27 2006-12-12 Rolls-Royce Plc Cooled turbine assembly
RU2493388C1 (en) * 2012-03-27 2013-09-20 Открытое акционерное общество Конструкторско-производственное предприятие "Авиамотор" Seal of gas turbine engine combustion chamber-to-stator joint

Also Published As

Publication number Publication date
BE556215A (en) 1957-04-15
CH338328A (en) 1959-05-15
DE1116685B (en) 1961-11-09

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