FR2371574A1 - Water cooled blade for gas turbine - has flow equalising threads in each radial water passage - Google Patents

Water cooled blade for gas turbine - has flow equalising threads in each radial water passage

Info

Publication number
FR2371574A1
FR2371574A1 FR7734418A FR7734418A FR2371574A1 FR 2371574 A1 FR2371574 A1 FR 2371574A1 FR 7734418 A FR7734418 A FR 7734418A FR 7734418 A FR7734418 A FR 7734418A FR 2371574 A1 FR2371574 A1 FR 2371574A1
Authority
FR
France
Prior art keywords
radial
blade
threads
gas turbine
water
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.)
Pending
Application number
FR7734418A
Other languages
French (fr)
Inventor
Paul Harriman Kydd
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 FR2371574A1 publication Critical patent/FR2371574A1/en
Pending 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
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/185—Liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/25—Three-dimensional helical

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

A turbine blade has a profiled blade enclosed in an outer sheet n11) of material with suitable temp. and erosion resisting properties. The core has a fir tree root which is inserted in a groove in the rotor and has radial grooves (19) running along it. These are closed by the outer sheet to form radial water cooling passages. A series of helical grooves (41) is cut in the base of each longitudinal groove (19) in the blade. Alternatively inserts forming a helical upstand can be fitted in the longitudinal grooves. This promotes turbulence in the water flow and prevents the Coriolis force limiting the water stream to a part only of the channel surface. It thus improves the heat transfer characteristics.
FR7734418A 1976-11-19 1977-11-16 Water cooled blade for gas turbine - has flow equalising threads in each radial water passage Pending FR2371574A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74327276A 1976-11-19 1976-11-19

Publications (1)

Publication Number Publication Date
FR2371574A1 true FR2371574A1 (en) 1978-06-16

Family

ID=24988160

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734418A Pending FR2371574A1 (en) 1976-11-19 1977-11-16 Water cooled blade for gas turbine - has flow equalising threads in each radial water passage

Country Status (6)

Country Link
JP (1) JPS5377912A (en)
DE (1) DE2750985A1 (en)
FR (1) FR2371574A1 (en)
IT (1) IT1087226B (en)
NL (1) NL7712519A (en)
NO (1) NO773954L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5002460A (en) * 1989-10-02 1991-03-26 General Electric Company Internally cooled airfoil blade
DE60217753T2 (en) 2001-05-04 2007-11-15 Ross Operating Valve Co., Troy Control valve system
US8201621B2 (en) * 2008-12-08 2012-06-19 General Electric Company Heat exchanging hollow passages with helicoidal grooves

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB426885A (en) * 1933-11-03 1935-04-11 Dewandre Co Ltd C Improvements in or relating to heat transmitting tubes
GB509105A (en) * 1937-11-09 1939-07-11 Lind Air Products Company Improvements in the revaporization of liquid oxygen
CH207254A (en) * 1938-07-19 1939-10-15 Corsetti Ernesto Device for heat exchange between fluids.
DE853534C (en) * 1943-02-27 1952-10-27 Maschf Augsburg Nuernberg Ag Air-cooled gas turbine blade
FR1022398A (en) * 1949-07-06 1953-03-04 Power Jets Res & Dev Ltd Improvements to turbine blades and the like
US3856433A (en) * 1973-08-02 1974-12-24 Gen Electric Liquid cooled turbine bucket with dovetailed attachment
DE2552679A1 (en) * 1974-11-25 1976-06-16 Hitachi Ltd HEAT TRANSFER PIPE

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB426885A (en) * 1933-11-03 1935-04-11 Dewandre Co Ltd C Improvements in or relating to heat transmitting tubes
GB509105A (en) * 1937-11-09 1939-07-11 Lind Air Products Company Improvements in the revaporization of liquid oxygen
CH207254A (en) * 1938-07-19 1939-10-15 Corsetti Ernesto Device for heat exchange between fluids.
DE853534C (en) * 1943-02-27 1952-10-27 Maschf Augsburg Nuernberg Ag Air-cooled gas turbine blade
FR1022398A (en) * 1949-07-06 1953-03-04 Power Jets Res & Dev Ltd Improvements to turbine blades and the like
US3856433A (en) * 1973-08-02 1974-12-24 Gen Electric Liquid cooled turbine bucket with dovetailed attachment
DE2552679A1 (en) * 1974-11-25 1976-06-16 Hitachi Ltd HEAT TRANSFER PIPE

Also Published As

Publication number Publication date
IT1087226B (en) 1985-06-04
JPS5377912A (en) 1978-07-10
NO773954L (en) 1978-05-22
DE2750985A1 (en) 1978-05-24
NL7712519A (en) 1978-05-23

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