EP1606494A1 - Kühlbares schichtsystem - Google Patents
Kühlbares schichtsystemInfo
- Publication number
- EP1606494A1 EP1606494A1 EP04717097A EP04717097A EP1606494A1 EP 1606494 A1 EP1606494 A1 EP 1606494A1 EP 04717097 A EP04717097 A EP 04717097A EP 04717097 A EP04717097 A EP 04717097A EP 1606494 A1 EP1606494 A1 EP 1606494A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- layer system
- coating
- coolable
- cooling channels
- 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
Links
- 238000001816 cooling Methods 0.000 claims abstract description 68
- 238000000576 coating method Methods 0.000 claims description 33
- 239000011248 coating agent Substances 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 21
- 239000011253 protective coating Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- 239000002826 coolant Substances 0.000 description 7
- 238000003801 milling Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Chemical group 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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
- F01D5/187—Convection 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
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for blades
Definitions
- the invention relates to a coolable layer system according to the preamble of claim 1.
- a layer system is known from US Pat. No. 5,080,557 in which a porous structure is arranged below a wall, through which a cooling medium flows. This layer structure is relatively thick and difficult to cool.
- EP 1 007 271 B1 shows an impact-cooled gas turbine blade, which, however, has no cooling channels underneath the outer wall. The elevations serve to support the outer wall and do not form any cooling channels.
- FIG. 1 shows a first embodiment of the coolable layer system
- FIG. 2 shows another embodiment of a coolable
- FIGS. 3, 4, 6 further modifications of the coolable layer system, and FIG. 5 a specially designed cooling duct.
- FIG. 1 shows a coolable layer system 1.
- the layer system 1 has a substrate 4.
- the substrate 4 is, for example, a ceramic or a metal, in particular a superalloy (nickel- or cobalt-based) for gas turbine components (turbine blade, combustion chamber lining, ..).
- At least one coating 7 is applied to the substrate 4.
- a ceramic coating for example a thermal insulation layer 9 (FIG. 6), can also be applied to the coating 7.
- At least one cooling channel 10 is formed here, for example, within the coating 7, i.e. the cooling channel 10 is formed by removing material of the coating 7 or by applying the
- a coolant is supplied via a coolant supply 13, which is formed at least in the substrate 4 and leads into at least one cooling channel 10.
- the cooling channels 10 are thus arranged in the immediate vicinity of an outer surface which can come into contact with a hot gas 8.
- the coating 7, which is exposed to higher temperatures than the substrate 4, can thus be cooled better.
- FIG. 2 shows a further exemplary embodiment of a coolable layer system 1.
- cooling channels 10 are not arranged through channels within the coating 7, but rather, for example, through depressions 23 in the substrate 4.
- the coating 7 forms part of the inner surface of the cooling channel 10 and closes it off from the outside.
- cooling channels 10 it is also possible for the cooling channels 10 to be arranged both in the substrate 4 and in the coating 7.
- FIG. 6 shows cooling channels 10 between two coatings 1, 9.
- the cooling channel 10 can also be formed by a recess 23 (indicated by dashed lines) in the coating 7.
- the cooling channels 10 according to FIGS. 1, 6 are produced, for example, as follows.
- the webs with the filling material are then removed.
- the material for the webs consists, for example, of graphite, which after being coated with the coating 7, 9 can be burned out or leached out. Other materials for the filling material are possible.
- corresponding depressions 23 are made in the surface 22 of the substrate.
- the recesses 23 are for example filled with a filler material, which prevents material. '"- the coating 7 penetrates in the coating of the substrate 4 in the cooling channels 10.
- the filling material is removed again, so that the cooling channels 10 are created.
- FIG. 3 shows the arrangement of cooling channels 10 according to FIGS. 1, 2 and 6 on a surface of a component 1 (layer system).
- the layer system 1 is, for example, a turbine blade that extends along a radial direction 16.
- At least one cooling duct 10 extends in an axial direction 19, perpendicular (90 °) to the radial direction 16.
- the cooling channels 10 can also run at an angle deviating from 90 ° to the radial axis 16 (FIG. 4), for example approximately parallel to the radial direction 16 (0 °).
- All cooling channels (10) can also extend in one direction. Groups of cooling channels can also run parallel to each other.
- FIG. 4 shows a further possibility of arranging cooling channels 10 according to FIGS. 1, 2 and 6 on a surface 22 or a coating 7 of a component 1.
- At least two cooling channels 10 intersect and are connected to one another, i.e. a cooling medium can flow from the cooling channel 10 into another cooling channel 10.
- a cooling medium can flow from the cooling channel 10 into another cooling channel 10.
- the surface to be cooled can be a partial area or the entire surface of an airfoil of a turbine blade (component 1). If a cooling channel 10 is blocked at one point, the cooling medium can still flow through the other cooling channels.
- the cooling medium K flows into the cooling channels 10 ′ and 10 ′′, for example, via an inlet. From the cooling duct 10 ′′, the cooling medium passes directly into the cooling duct 10 ′′ ′′ and 10 ′′ ′′, etc.
- the cooling channels 10 are arranged crosswise to one another in groups, for example, the cooling channels 10 running parallel to one another within a group.
- Intersecting cooling channels 10 and meandering can also be used
- Cooling channels 10 detect a surface to be cooled by connecting meandering cooling channels to intersecting cooling channels.
- FIG. 5 shows a specially designed cooling duct 10, for example starting from FIG. 1.
- the cooling duct 10 Since the cooling duct 10 is at least partially adjacent to the coating 7 (not shown) or to an outer wall, the cooling duct 10 of the layer system 1 to be produced has an opening 24 on the surface 22 without coatings or without an outer wall.
- the angle ⁇ between the surface 22 and the inner surface of the cooling channel 10 at the opening 24 is one of
- cooling channel 10 has undercuts 26 with respect to the surface 22.
- thermal stresses between the coatings 7, 9 or the wall and the substrate 4 are reduced.
- Such a cooling channel 10 with undercuts 26 can also be arranged in the coating 7 (FIG. 6).
- a cooling channel 10 with undercuts 26 in the substrate 4 is produced, for example, with a milling cutter or grinding head 25, which is spherical, hemispherical or conical at one end.
- a hole is made in the substrate 4 using the milling cutter 25 or another cylindrical drill by moving it in a drilling direction 29 almost perpendicular to the surface 22 of the substrate 4.
- the cutter 25 is moved back and forth in a direction 32 perpendicular to the drilling direction 29, as indicated by the arrow, as a result of which the undercuts 26 are produced in the substrate 4.
- the various positions of the milling cutter 25 during the back and forth movement are indicated by dashed lines.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04717097A EP1606494B1 (de) | 2003-03-26 | 2004-03-04 | Kühlbares schichtsystem |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03006962 | 2003-03-26 | ||
EP03006962A EP1462613A1 (de) | 2003-03-26 | 2003-03-26 | Kühlbares Schichtsystem |
EP04717097A EP1606494B1 (de) | 2003-03-26 | 2004-03-04 | Kühlbares schichtsystem |
PCT/EP2004/002223 WO2004085799A1 (de) | 2003-03-26 | 2004-03-04 | Kühlbares schichtsystem |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1606494A1 true EP1606494A1 (de) | 2005-12-21 |
EP1606494B1 EP1606494B1 (de) | 2007-05-02 |
Family
ID=32798919
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03006962A Withdrawn EP1462613A1 (de) | 2003-03-26 | 2003-03-26 | Kühlbares Schichtsystem |
EP04717097A Expired - Lifetime EP1606494B1 (de) | 2003-03-26 | 2004-03-04 | Kühlbares schichtsystem |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03006962A Withdrawn EP1462613A1 (de) | 2003-03-26 | 2003-03-26 | Kühlbares Schichtsystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060222492A1 (de) |
EP (2) | EP1462613A1 (de) |
DE (1) | DE502004003687D1 (de) |
ES (1) | ES2285440T3 (de) |
WO (1) | WO2004085799A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006069941A1 (de) | 2004-12-24 | 2006-07-06 | Alstom Technology Ltd | Bauteil mit eingebettetem kanal, insbesondere heissgaskomponente einer strömungsmaschine |
US20110150666A1 (en) * | 2009-12-18 | 2011-06-23 | Brian Thomas Hazel | Turbine blade |
EP2431572A1 (de) * | 2010-09-21 | 2012-03-21 | Siemens Aktiengesellschaft | Thermoisolationsschicht für eine Dampfturbinenkomponente |
US8387245B2 (en) | 2010-11-10 | 2013-03-05 | General Electric Company | Components with re-entrant shaped cooling channels and methods of manufacture |
DE102012205055B4 (de) * | 2012-03-29 | 2020-08-06 | Detlef Haje | Gasturbinenbauteil für Hochtemperaturanwendungen, sowie Verfahren zum Betreiben und Herstellen eines solchen Gasturbinenbauteils |
DE102013109116A1 (de) * | 2012-08-27 | 2014-03-27 | General Electric Company (N.D.Ges.D. Staates New York) | Bauteil mit Kühlkanälen und Verfahren zur Herstellung |
US20160032766A1 (en) * | 2013-03-14 | 2016-02-04 | General Electric Company | Components with micro cooled laser deposited material layer and methods of manufacture |
US9803939B2 (en) * | 2013-11-22 | 2017-10-31 | General Electric Company | Methods for the formation and shaping of cooling channels, and related articles of manufacture |
US10731483B2 (en) * | 2015-12-08 | 2020-08-04 | General Electric Company | Thermal management article |
GB201521862D0 (en) * | 2015-12-11 | 2016-01-27 | Rolls Royce Plc | Cooling arrangement |
DE102016205320A1 (de) | 2016-03-31 | 2017-10-05 | Siemens Aktiengesellschaft | Turbinenschaufel mit Kühlstruktur |
US10830058B2 (en) | 2016-11-30 | 2020-11-10 | Rolls-Royce Corporation | Turbine engine components with cooling features |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2641439A (en) * | 1947-10-01 | 1953-06-09 | Chrysler Corp | Cooled turbine or compressor blade |
NL212036A (de) * | 1955-11-16 | |||
GB1175816A (en) * | 1968-06-24 | 1969-12-23 | Rolls Royce | Improvements relating to the Cooling of Aerofoil Shaped Blades |
US5405242A (en) * | 1990-07-09 | 1995-04-11 | United Technologies Corporation | Cooled vane |
US5080557A (en) * | 1991-01-14 | 1992-01-14 | General Motors Corporation | Turbine blade shroud assembly |
US5653110A (en) * | 1991-07-22 | 1997-08-05 | General Electric Company | Film cooling of jet engine components |
US5370499A (en) * | 1992-02-03 | 1994-12-06 | General Electric Company | Film cooling of turbine airfoil wall using mesh cooling hole arrangement |
US5820337A (en) * | 1995-01-03 | 1998-10-13 | General Electric Company | Double wall turbine parts |
US5640767A (en) * | 1995-01-03 | 1997-06-24 | Gen Electric | Method for making a double-wall airfoil |
US6214248B1 (en) * | 1998-11-12 | 2001-04-10 | General Electric Company | Method of forming hollow channels within a component |
US6617003B1 (en) * | 2000-11-06 | 2003-09-09 | General Electric Company | Directly cooled thermal barrier coating system |
US6627019B2 (en) * | 2000-12-18 | 2003-09-30 | David C. Jarmon | Process for making ceramic matrix composite parts with cooling channels |
US6551061B2 (en) * | 2001-03-27 | 2003-04-22 | General Electric Company | Process for forming micro cooling channels inside a thermal barrier coating system without masking material |
-
2003
- 2003-03-26 EP EP03006962A patent/EP1462613A1/de not_active Withdrawn
-
2004
- 2004-03-04 WO PCT/EP2004/002223 patent/WO2004085799A1/de active IP Right Grant
- 2004-03-04 ES ES04717097T patent/ES2285440T3/es not_active Expired - Lifetime
- 2004-03-04 EP EP04717097A patent/EP1606494B1/de not_active Expired - Lifetime
- 2004-03-04 US US10/550,973 patent/US20060222492A1/en not_active Abandoned
- 2004-03-04 DE DE502004003687T patent/DE502004003687D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004085799A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1462613A1 (de) | 2004-09-29 |
US20060222492A1 (en) | 2006-10-05 |
WO2004085799A1 (de) | 2004-10-07 |
EP1606494B1 (de) | 2007-05-02 |
DE502004003687D1 (de) | 2007-06-14 |
ES2285440T3 (es) | 2007-11-16 |
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