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EP0798448A3 - System and device to cool a wall which is heated on one side by hot gas - Google Patents

System and device to cool a wall which is heated on one side by hot gas Download PDF

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Publication number
EP0798448A3
EP0798448A3 EP97810115A EP97810115A EP0798448A3 EP 0798448 A3 EP0798448 A3 EP 0798448A3 EP 97810115 A EP97810115 A EP 97810115A EP 97810115 A EP97810115 A EP 97810115A EP 0798448 A3 EP0798448 A3 EP 0798448A3
Authority
EP
European Patent Office
Prior art keywords
recesses
cooling
wall
hot gas
cool
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.)
Granted
Application number
EP97810115A
Other languages
German (de)
French (fr)
Other versions
EP0798448B1 (en
EP0798448A2 (en
Inventor
Günter Dr. Wilfert
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 Switzerland GmbH
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
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 ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Publication of EP0798448A2 publication Critical patent/EP0798448A2/en
Publication of EP0798448A3 publication Critical patent/EP0798448A3/en
Application granted granted Critical
Publication of EP0798448B1 publication Critical patent/EP0798448B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01D5/186—Film 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
    • 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
    • F01D5/187—Convection cooling
    • F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
    • 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
    • F01D5/187—Convection cooling
    • F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
    • F01D5/189—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall the insert having a tubular cross-section, e.g. airfoil shape
    • 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
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/201—Heat transfer, e.g. cooling by impingement of a fluid
    • 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
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/221—Improvement of heat transfer
    • F05D2260/2212—Improvement of heat transfer by creating turbulence

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

Aufgabe der Erfindung ist es, eine einfache, mit einer verbesserten Kühlwirkung ausgestattete Vorrichtung und eine entsprechendes Verfahren zur Kühlung einer einseitig von Heissgas umgebenen Wand zu schaffen.The object of the invention is a simple, with an improved Cooling device equipped and a corresponding Process for cooling one side of hot gas to create the surrounding wall.

Erfindungsgemäss wird dies dadurch erreicht, dass stromauf jeder Reihe von Ausnehmungen (10) eine radiale Rippe (15) an der inneren Oberfläche (9) der Wand (3) angeordnet, der Kühleinsatz (4) im Bereich der Ausnehmungen (10) in Richtung der Wand (3) verformt und dabei zumindest annähernd parallel zum Eintrittswinkel (16) der Ausnehmungen (10) ausgebildet ist. Auf diese Weise wird das Kühlfluid (7) bereits vor Erreichen der Ausnehmungen (10) in deren Richtung umgelenkt und ein stabiles Innenwirbelpaar (19) erzeugt. Zudem werden die Eintrittsverluste verringert. Das nicht in die Ausnehmungen (10) strömende Kühlfluid (7) wird beschleunigt und der Wärmeübergang durch Prallkühleffekte erhöht. Im Kühlhohlraum (5) zwischen zwei Ausnehmungen (10) angeordnete Abstandshalter (20) oder Stifte (21) dienen als Wärmesenkelemente, um den Bereich bis zur lateralen Verbindung zweier Kühlluftstrahlen zu verbessern.

Figure 00000001
According to the invention, this is achieved in that a radial rib (15) is arranged upstream of each row of recesses (10) on the inner surface (9) of the wall (3), the cooling insert (4) in the region of the recesses (10) in the direction of the Wall (3) is deformed and is formed at least approximately parallel to the entry angle (16) of the recesses (10). In this way, the cooling fluid (7) is deflected in its direction before the recesses (10) are reached and a stable pair of internal vertebrae (19) is generated. In addition, entry losses are reduced. The cooling fluid (7) not flowing into the recesses (10) is accelerated and the heat transfer is increased by impact cooling effects. Spacers (20) or pins (21) arranged in the cooling cavity (5) between two recesses (10) serve as heat sink elements in order to improve the area up to the lateral connection of two cooling air jets.
Figure 00000001
EP97810115A 1996-03-30 1997-03-03 System and device to cool a wall which is heated on one side by hot gas Expired - Lifetime EP0798448B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19612840A DE19612840A1 (en) 1996-03-30 1996-03-30 Device and method for cooling a wall surrounded by hot gas on one side
DE19612840 1996-03-30

Publications (3)

Publication Number Publication Date
EP0798448A2 EP0798448A2 (en) 1997-10-01
EP0798448A3 true EP0798448A3 (en) 1999-05-06
EP0798448B1 EP0798448B1 (en) 2003-05-07

Family

ID=7790044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810115A Expired - Lifetime EP0798448B1 (en) 1996-03-30 1997-03-03 System and device to cool a wall which is heated on one side by hot gas

Country Status (4)

Country Link
US (1) US5779438A (en)
EP (1) EP0798448B1 (en)
JP (1) JP3886593B2 (en)
DE (2) DE19612840A1 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6474947B1 (en) * 1998-03-13 2002-11-05 Mitsubishi Heavy Industries, Ltd. Film cooling hole construction in gas turbine moving-vanes
DE19845147B4 (en) * 1998-10-01 2006-11-23 Alstom Apparatus and method for cooling a wall surrounded by hot gas on one side
GB2350867B (en) * 1999-06-09 2003-03-19 Rolls Royce Plc Gas turbine airfoil internal air system
US7128533B2 (en) * 2004-09-10 2006-10-31 Siemens Power Generation, Inc. Vortex cooling system for a turbine blade
FR2890103A1 (en) * 2005-08-25 2007-03-02 Snecma Movable gas turbine engine blade e.g. movable high-pressure turbine blade, has air deflector positioned based on air flow that is centrifugal or centripetal, to project air circulating in cavity towards wall of cavity
JP4147239B2 (en) 2005-11-17 2008-09-10 川崎重工業株式会社 Double jet film cooling structure
JP2009162119A (en) * 2008-01-08 2009-07-23 Ihi Corp Turbine blade cooling structure
US8109724B2 (en) * 2009-03-26 2012-02-07 United Technologies Corporation Recessed metering standoffs for airfoil baffle
US8572983B2 (en) 2012-02-15 2013-11-05 United Technologies Corporation Gas turbine engine component with impingement and diffusive cooling
US8683814B2 (en) * 2012-02-15 2014-04-01 United Technologies Corporation Gas turbine engine component with impingement and lobed cooling hole
US9328616B2 (en) * 2013-02-01 2016-05-03 Siemens Aktiengesellschaft Film-cooled turbine blade for a turbomachine
WO2015031816A1 (en) 2013-08-30 2015-03-05 United Technologies Corporation Gas turbine engine wall assembly with support shell contour regions
US9708915B2 (en) 2014-01-30 2017-07-18 General Electric Company Hot gas components with compound angled cooling features and methods of manufacture
EP3102883B1 (en) * 2014-02-03 2020-04-01 United Technologies Corporation Film cooling a combustor wall of a turbine engine
WO2015184294A1 (en) 2014-05-29 2015-12-03 General Electric Company Fastback turbulator
US10364684B2 (en) 2014-05-29 2019-07-30 General Electric Company Fastback vorticor pin
US10233775B2 (en) 2014-10-31 2019-03-19 General Electric Company Engine component for a gas turbine engine
US10280785B2 (en) 2014-10-31 2019-05-07 General Electric Company Shroud assembly for a turbine engine
US10260353B2 (en) * 2014-12-04 2019-04-16 Rolls-Royce Corporation Controlling exit side geometry of formed holes
CN104594956B (en) * 2015-02-10 2016-02-17 河北工业大学 A kind of structure improving fluting air film hole downstream wall gas film cooling efficiency
US20180135432A1 (en) * 2015-05-07 2018-05-17 Siemens Aktiengesellschaft Turbine airfoil with internal cooling channels
US10344598B2 (en) * 2015-12-03 2019-07-09 General Electric Company Trailing edge cooling for a turbine blade
CN105401983B (en) * 2015-12-24 2017-04-12 河北工业大学 Upstream structure for improving outer cooling effect of component
US10648341B2 (en) 2016-11-15 2020-05-12 Rolls-Royce Corporation Airfoil leading edge impingement cooling
US10465526B2 (en) 2016-11-15 2019-11-05 Rolls-Royce Corporation Dual-wall airfoil with leading edge cooling slot
US10450873B2 (en) * 2017-07-31 2019-10-22 Rolls-Royce Corporation Airfoil edge cooling channels
US11408302B2 (en) * 2017-10-13 2022-08-09 Raytheon Technologies Corporation Film cooling hole arrangement for gas turbine engine component
US10570751B2 (en) * 2017-11-22 2020-02-25 General Electric Company Turbine engine airfoil assembly
GB201806821D0 (en) * 2018-04-26 2018-06-13 Rolls Royce Plc Coolant channel
CN113217462B (en) * 2021-06-08 2022-11-29 西北工业大学 Subsonic vortex blowing type compressor blade
CN114017132A (en) * 2021-11-16 2022-02-08 西安热工研究院有限公司 Gas film cooling structure for gas turbine blade

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3628885A (en) * 1969-10-01 1971-12-21 Gen Electric Fluid-cooled airfoil
SU565991A1 (en) * 1975-08-18 1977-07-25 Уфимский авиационный институт им. С.Орджоникидзе Cooled blade for a turbine
US4153386A (en) * 1974-12-11 1979-05-08 United Technologies Corporation Air cooled turbine vanes
JPS55104507A (en) * 1979-02-05 1980-08-11 Ishikawajima Harima Heavy Ind Co Ltd Cooling blade for high-temperature turbine
EP0258754A2 (en) * 1986-09-03 1988-03-09 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Turbine blade with a cooling insert
JPH07145702A (en) * 1993-11-22 1995-06-06 Toshiba Corp Turbine cooling blade

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JPH0352504A (en) * 1989-07-18 1991-03-06 Fujikura Ltd Self-propelled apparatus in conduit

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
US3628885A (en) * 1969-10-01 1971-12-21 Gen Electric Fluid-cooled airfoil
US4153386A (en) * 1974-12-11 1979-05-08 United Technologies Corporation Air cooled turbine vanes
SU565991A1 (en) * 1975-08-18 1977-07-25 Уфимский авиационный институт им. С.Орджоникидзе Cooled blade for a turbine
JPS55104507A (en) * 1979-02-05 1980-08-11 Ishikawajima Harima Heavy Ind Co Ltd Cooling blade for high-temperature turbine
EP0258754A2 (en) * 1986-09-03 1988-03-09 Mtu Motoren- Und Turbinen-Union MàœNchen Gmbh Turbine blade with a cooling insert
JPH07145702A (en) * 1993-11-22 1995-06-06 Toshiba Corp Turbine cooling blade
US5533864A (en) * 1993-11-22 1996-07-09 Kabushiki Kaisha Toshiba Turbine cooling blade having inner hollow structure with improved cooling

Non-Patent Citations (4)

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Title
DATABASE WPI Section PQ Week 7832, Derwent World Patents Index; Class Q51, AN 78-G2534A, XP002095933 *
PATENT ABSTRACTS OF JAPAN vol. 004, no. 154 (M - 038) 28 October 1980 (1980-10-28) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 009 31 October 1995 (1995-10-31) *
WILFERT GÜNTER: "Experimentelle und numerische Untersuchungen der Mischungsvorgange zwischen Kuhlfilmen und Gitterstromung an einem hobhbelasteten Turbinengitter", AERODYNAMIK DER FILMKÜHLUNG (ABSCHLUSSBERICHT, VORHABEN NR. 520 UND 594), vol. 573, 1 July 1991 (1991-07-01) - 31 December 1994 (1994-12-31), XP002095932 *

Also Published As

Publication number Publication date
DE59710009D1 (en) 2003-06-12
EP0798448B1 (en) 2003-05-07
DE19612840A1 (en) 1997-10-02
US5779438A (en) 1998-07-14
JPH108909A (en) 1998-01-13
JP3886593B2 (en) 2007-02-28
EP0798448A2 (en) 1997-10-01

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