GB679916A - Improvements in gas turbines - Google Patents

Improvements in gas turbines

Info

Publication number
GB679916A
GB679916A GB11454/49A GB1145449A GB679916A GB 679916 A GB679916 A GB 679916A GB 11454/49 A GB11454/49 A GB 11454/49A GB 1145449 A GB1145449 A GB 1145449A GB 679916 A GB679916 A GB 679916A
Authority
GB
United Kingdom
Prior art keywords
shroud ring
casing
secured
extension
annular
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
GB11454/49A
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.)
Ruston and Hornsby Ltd
Original Assignee
Ruston and Hornsby 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 Ruston and Hornsby Ltd filed Critical Ruston and Hornsby Ltd
Publication of GB679916A publication Critical patent/GB679916A/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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/246—Fastening of diaphragms or stator-rings
    • 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
    • F01D11/20—Actively adjusting tip-clearance
    • F01D11/24—Actively adjusting tip-clearance by selectively cooling-heating stator or rotor components
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/14—Casings modified therefor
    • F01D25/145—Thermally insulated casings

Landscapes

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

Abstract

679,916. Gas turbines. FEILDEN, G. B. R., and RUSTON and HORNSBY, Ltd. April 27, 1950 [April 29, 1949], No. 11454/49. Class 110(iii) A casing construction for an axial flow gas turbine comprises inner and outer cylindrical casings 11, 10 connected together at the ends remote from the turbine rotor, the free end of the outer casing having an extension 19 with inwardly projecting webs 12, 22 on which the segments of the shroud ring 23 are supported. The inlet volue 27 is embedded in lagging 12 between the inner and outer casings 11, 10 and the inner wall of the volute is supported by means of a ring member 26 which comprises an annular plate 26d attached to the end of the inner casing 11, an intermediate thin-walled cylindrical portion 26c which is relatively long comparea with its thickness to permit expansion, an annular web 26b and a further cylindrical portion 26a which forms the inner wall of the nozzle annulus. The free end of the inner casing 11 has an inward flange 11a to which is secured a bearing housing 13 in which is supported the journal 14 of the overhung rotor. An apertured plate 29 secured to the annular web 26b shrouds the first stage turbine disc 15. Cooling air is led through the annular passages 30 between the lagging 12 and the outer casing 10 and passes through the radial clearance 31 to the annular space between the shroud ring 23 and the lagging 38 inside the extension 19, the air then passing through holes in the segments of the shroud ring to the working fluid annulus. Regulation of the cooling air is effected by tapered screw plugs 34 having clearance threads. The rotor comprises two discs 15, 16 secured to the journal by a retaining stud 35 and nut 36 and keyed by dowels 37. The shroud ring may be mounted by means of studs having T-shaped heads, secured to the extension 19, the T-heads sliding in grooves on the outer surface of the shroud ring. Lugs may also be provided on the outer surface of the shroud ring and on the inner surface of the casing extension 19, pins passing through the lugs to support the shroud ring.
GB11454/49A 1949-04-29 1949-04-29 Improvements in gas turbines Expired GB679916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB282188X 1949-04-29

Publications (1)

Publication Number Publication Date
GB679916A true GB679916A (en) 1952-09-24

Family

ID=10272198

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11454/49A Expired GB679916A (en) 1949-04-29 1949-04-29 Improvements in gas turbines

Country Status (3)

Country Link
CH (1) CH282188A (en)
DE (1) DE816625C (en)
GB (1) GB679916A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858104A (en) * 1954-02-04 1958-10-28 A V Roe Canada Ltd Adjustable gas turbine shroud ring segments
US2863634A (en) * 1954-12-16 1958-12-09 Napier & Son Ltd Shroud ring construction for turbines and compressors
US2917276A (en) * 1955-02-28 1959-12-15 Orenda Engines Ltd Segmented stator ring assembly
US2962256A (en) * 1956-03-28 1960-11-29 Napier & Son Ltd Turbine blade shroud rings
US3104091A (en) * 1959-01-23 1963-09-17 Bristol Siddeley Engines Ltd Turbines
US3661477A (en) * 1968-12-17 1972-05-09 Kongsberg Vapenfab As Heat shield
US3975112A (en) * 1975-06-09 1976-08-17 United Technologies Corporation Apparatus for sealing a gas turbine flow path
FR2421279A1 (en) * 1978-03-29 1979-10-26 Bbc Brown Boveri & Cie DISCHARGE MACHINE WITH COOLING OF THE SUPPORT FOR THE STEERING FINS
EP0054116A1 (en) * 1980-10-30 1982-06-23 Carrier Corporation Turbomachine stator assembly, and disassembling and assembling method therefor
US4696619A (en) * 1985-02-13 1987-09-29 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A." Housing for a turbojet engine compressor
WO2009123302A2 (en) * 2008-03-31 2009-10-08 Mitsubishi Heavy Industries, Ltd. Thermal insulation structure for structural member, and scroll structure

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH305523A (en) * 1952-09-27 1955-02-28 Tech Studien Ag Housing for gas or steam turbines.
DE928746C (en) * 1952-12-04 1955-06-10 Maschf Augsburg Nuernberg Ag Diffuser for exhaust gas fan
DE1033677B (en) * 1957-10-31 1958-07-10 Maschf Augsburg Nuernberg Ag Diffuser with adjustable blades for turbines and compressors, especially for gas turbines
DE1200070B (en) * 1961-11-21 1965-09-02 Siemens Ag Process for the production of guide vane ring segments for gas turbines
DE1259142B (en) * 1962-02-14 1968-01-18 Licentia Gmbh Ring flange of the tubular inner or outer housing of an axial gas or steam turbine
US3142475A (en) * 1962-12-28 1964-07-28 Gen Electric Stator assembly
DE1285255B (en) * 1964-10-28 1968-12-12 Bergmann Borsig Veb Heat-movable suspended guide grille segments of axial gas turbines

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858104A (en) * 1954-02-04 1958-10-28 A V Roe Canada Ltd Adjustable gas turbine shroud ring segments
US2863634A (en) * 1954-12-16 1958-12-09 Napier & Son Ltd Shroud ring construction for turbines and compressors
US2917276A (en) * 1955-02-28 1959-12-15 Orenda Engines Ltd Segmented stator ring assembly
US2962256A (en) * 1956-03-28 1960-11-29 Napier & Son Ltd Turbine blade shroud rings
US3104091A (en) * 1959-01-23 1963-09-17 Bristol Siddeley Engines Ltd Turbines
US3661477A (en) * 1968-12-17 1972-05-09 Kongsberg Vapenfab As Heat shield
US3975112A (en) * 1975-06-09 1976-08-17 United Technologies Corporation Apparatus for sealing a gas turbine flow path
FR2421279A1 (en) * 1978-03-29 1979-10-26 Bbc Brown Boveri & Cie DISCHARGE MACHINE WITH COOLING OF THE SUPPORT FOR THE STEERING FINS
EP0054116A1 (en) * 1980-10-30 1982-06-23 Carrier Corporation Turbomachine stator assembly, and disassembling and assembling method therefor
US4696619A (en) * 1985-02-13 1987-09-29 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A." Housing for a turbojet engine compressor
WO2009123302A2 (en) * 2008-03-31 2009-10-08 Mitsubishi Heavy Industries, Ltd. Thermal insulation structure for structural member, and scroll structure
WO2009123302A3 (en) * 2008-03-31 2010-09-16 Mitsubishi Heavy Industries, Ltd. Thermal insulation structure for structural member, and scroll structure
RU2487251C2 (en) * 2008-03-31 2013-07-10 Мицубиси Хеви Индастрис, Лтд. Heat-insulating structure for structural element and helical structure
US8613589B2 (en) 2008-03-31 2013-12-24 Pebble Bed Modular Reactor (Pty) Limited Thermal insulation structure for structural member, and scroll structure

Also Published As

Publication number Publication date
DE816625C (en) 1951-10-11
CH282188A (en) 1952-04-15

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