DE1932000B2 - Cooled hollow blade for flow machines - Google Patents
Cooled hollow blade for flow machinesInfo
- Publication number
- DE1932000B2 DE1932000B2 DE19691932000 DE1932000A DE1932000B2 DE 1932000 B2 DE1932000 B2 DE 1932000B2 DE 19691932000 DE19691932000 DE 19691932000 DE 1932000 A DE1932000 A DE 1932000A DE 1932000 B2 DE1932000 B2 DE 1932000B2
- Authority
- DE
- Germany
- Prior art keywords
- sheet
- cooling air
- hollow blade
- blade according
- sheets
- 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.)
- Withdrawn
Links
- 238000001816 cooling Methods 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 238000009760 electrical discharge machining Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000005476 soldering Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 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
- F01D5/182—Transpiration cooling
- F01D5/184—Blade walls being made of perforated sheet laminae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Coating By Spraying Or Casting (AREA)
Description
22. Das .Zwischenblech 22 weist entgegengesetzte Oberflächen 23, 24 auf, wobei die Fläche 23, in der Nähe einer genuteten Oberfläche 25 des inneren Bleches 20 liegt, während die Oberfläche 24 in der S Nähe einer genuteten Oberfläche 26 des äußeren Bleches 21 liegt. Jede der Oberflächen 25, 26 ist mit einer ersten Gruppe paralleler Kühllüftkanäle 30 versehen, die sich im wesentlichen in Längsrichtung der Hohlschaufel erstrecken und diese Gruppe wird von22. The intermediate plate 22 has opposite Surfaces 23, 24, the surface 23, in the Sew a grooved surface 25 of the inner Sheet metal 20 is, while the surface 24 is in the vicinity of a grooved surface 26 of the outer Sheet 21 lies. Each of the surfaces 25, 26 is provided with a first group of parallel cooling air ducts 30, which extend essentially in the longitudinal direction of the hollow blade and this group is made up of
einem gewundenen Kanal in der Ebene der Schaüfelwandung folgen muß.a winding channel in the plane of the Schaüfelwandung must follow.
Eine derartige Hohlschaufel ist aus der USA.-Patentschrift 3 246 469 bekannt.Such a hollow blade is known from US Pat. No. 3,246,469.
Bei der bekannten Hohlschaufel bestehen die Schaufeln aus Wellblechen, deren Kühlluftkanäle durch die Wellungen gebildet werden. Dieser Wellblechaufbau ist kompliziert und festigkeitsmäßig un-In the case of the known hollow blade, the blades consist of corrugated metal sheets and their cooling air ducts are formed by the corrugations. This corrugated iron structure is complicated and in terms of strength
Die Erfindung betrifft eine gekühlte Hohlschaufel
für Strömungsmaschinen, bestehend aus mehreren
Blechen, die miteinander so verbunden sind, daß sich
zwischen einem, inneren Blech und einem äußeren
Blech Kühlluftkanäle befinden, wobei die inneren
und äußeren Bleche mit Öffnungen versehen sind;
die so angeordnet sind, daß ein direkter Durchgang
der Kühlluft von einer Öffnung in dem inneren Blech
zu einer Öffnung in dem äußeren Blech dadurch vermieden
wird, daß die Kühlluft beim Durchtritt vom io einer weiteren Gruppe paralleler Kühlluftkanäle 31
Inneren der Schaufel nach dem Äußeren der Schaufel gekreuzt. Die Kühlluftkanäle 30, 31 leiten die Kühlluftströmung
zwischen benachbarte Oberflächen 23, 25 bzw. 24, 26.The invention relates to a cooled hollow blade
for fluid flow machines, consisting of several
Sheets that are connected to each other in such a way that
between an inner sheet metal and an outer one
Sheet metal cooling air ducts are located, with the inner
and outer sheets are provided with openings;
which are arranged so that a direct passage
the cooling air from an opening in the inner panel
to an opening in the outer sheet is avoided in that the cooling air when passing from another group of parallel cooling air channels 31 crosses the inside of the blade to the outside of the blade. The cooling air channels 30, 31 guide the cooling air flow between adjacent surfaces 23, 25 and 24, 26, respectively.
' Das äußere Blech 21 ist mit mehreren Löchern 32 15 versehen, wobei jeder zweite Schnittpunkt der Kühlluftkanäle 30, 31 mit einem solchen Loch 32 ausgestattet ist, so daß diese Löcher mit den Kühlluftkanälen in Verbindung stehen. Das innere Blech 20 ist mit durchgehenden Lochern 33 versehen, derenThe outer plate 21 has a plurality of holes 32 15 provided, with every second point of intersection of the cooling air ducts 30, 31 is equipped with such a hole 32, so that these holes with the cooling air channels stay in contact. The inner plate 20 is provided with through holes 33, whose
günstig, so daß derartige Schaufeln nur als Leit- 20 Abstand gleich ist dem Abstand zwischen den schaufeln benutzt werden können^ nicht aber als Lauf- Löchern 32. Die Löcher 33 stehen jedoch mit den schaufeln. ' Kühlluftkanälen 31 des inneren Bleches 20 an Punk-favorable, so that such blades only as a guide 20 distance is equal to the distance between the Shovels can be used ^ but not as running holes 32. The holes 33 are, however, with the shovel. 'Cooling air channels 31 of the inner plate 20 at point
Es liegt die Aufgabe vor, eine aus Blechen ge- ten in Verbindung, die zwischen den Kühlluftkanälen schichtete Hohlschaufel so auszubilden, daß sie bei 30.liegen und sie sind daher nicht auf die Löcher 32 ausreichender Kühlung aller Stellen günstige Festig- 25 ausgerichtet.The task at hand is to make a connection between the cooling air ducts made of sheet metal layered hollow blades so that they are at 30. and they are therefore not on the holes 32 adequate cooling of all places favorable strength 25 aligned.
keitseigenschaften besitzt, die ihre Anwendung auch Das Zwischenblech 22 ist mit Löchern 34 aus-The intermediate plate 22 is equipped with holes 34.
als Laufschaufel ermöglicht, wobei der Zusammen- gestattet, deren Abstand jenem der Löcher 33 entbau der Bleche zu einer Hohlschaufel einfach sein spricht und ebenso dem Abstand der Löcher 32, jesoll. , . ' . "'■ doch sind die Löcher34 weder auf die Löcher33made possible as a rotor blade, the assembly allowing the spacing of which removes that of the holes 33 the sheet metal to be a hollow blade speaks simply and also the distance between the holes 32, jesoll. ,. '. "'■ but the holes34 are neither on the holes33
Gemäß der Erfindung wird diese Aufgabe bei einer 30 noch auf die Löcher 32 ausgerichtet. Die Löcher 34 Hohlschaufel der eingangs genannten Bauart dadurch stehen mit jeweils jedem zweiten Kühlluftkanal 31 in gelöst, daß die Öffnungen in dem inneren Blech und Verbindung. ,According to the invention, this task is still directed to the holes 32 in the case of a 30. The holes 34 Hollow blades of the type mentioned at the beginning thereby stand in each case with every second cooling air duct 31 solved that the openings in the inner sheet and connection. ,
dem äußeren Blech Löcher sind und ein zwischen Demgemäß kann Kühlluft,-die dem Inneren derthe outer sheet are holes and a between. Accordingly, cooling air, -the inside of the
diesen Blechen gelegenes glattes gelochtes Zwischen- Hohlschaufel zugeführt wird, wie dies durch den Pfeil blech vorgesehen ist, und daß die Kühlluftkanäle je- 35 35 in Fig. 3 angedeutet ist, durch die Löcher 33 und weils in der dem Zwischenblech zugekehrten Ober- die Kühlluftkanäle30, 31 in dem inneren Blech20 fläche des inneren und äußeren Bleches eingearbeitet und dann über die Löcher 34 in dem Zwischenblechthese plates located smooth perforated intermediate hollow blade is fed, as indicated by the arrow sheet metal is provided, and that the cooling air ducts each 35 35 is indicated in Fig. 3, through the holes 33 and because the cooling air ducts 30, 31 in the inner sheet 20 are in the upper sheet facing the intermediate sheet surface of the inner and outer sheet incorporated and then through the holes 34 in the intermediate sheet
sind. 22 und schließlich durch Kühlluftkanäle 30, 31 imare. 22 and finally through cooling air channels 30, 31 in the
Die hierbei verwendeten glatten bzw. genuteten äußeren Blech 21 abströmen, so daß diese nach demThe smooth or grooved outer sheet 21 used here flow off, so that this after the
Bleche mit ihren Kühlluftdurchtrittsöffnungen ermög- 40 Äußeren der Hohlschaufel. über die Löcher 32 ge- * liehen einen einfachen Zusammenbau, wobei eine langt. Die Kühlluft, die auf diese Weise vom Inneren wirksame Kühlung über die gesamte Oberfläche er- nach dem Äußeren der Hohlschaufel fließt, muß da-Sheets with their cooling air passage openings allow the hollow blade to be exter- nated. through the holes 32 * Borrowed a simple assembly, one of which is enough. The cooling air coming in this way from the inside effective cooling over the entire surface after the outside of the hollow blade flows,
Iangt werden kann. ' - her einem gewundenen Pfad durch die Kühlluft-Can be reached. '- a winding path through the cooling air -
Eine weiterhin vereinfachte Bearbeitung ergibt . kanäle folgen, wodurch die Kühlung der HohlschaufelA further simplified processing results. channels follow, thereby cooling the hollow blade
sich, wenn jeweils nur eine der einander gegenüber- 45 wirksam fortschreitet.if only one of the opposing 45 effectively advances.
liegenden Oberflächen mit Nuten versehen wird, wan- Die Kühlluftkanäle 30, 31 und die Löcher 32, 33,lying surfaces is provided with grooves, if the cooling air ducts 30, 31 and the holes 32, 33,
rend "die andere glatt bleibt. Hierbei sind zweck- 34 können in den Blechen durch Fuhkenerosionsmäßigerweise wei Gruppen parallel zueinander ver- bearbeitung hergestellt werden, laufender Kühlluftkanäle einander schneidend an- Die Bleche 20, 21 und das Zwischenblech 22 sindrend "the other remains smooth because groups are processed parallel to each other, running cooling air ducts intersecting one another. The sheets 20, 21 and the intermediate sheet 22 are
geordnet: Die Bearbeitung der Bleche zur Herstellung 5° z. B. durch Diffusionsverlötung miteinander verder
Kühlluftkanäle und der Löcher geschieht vor- bunden.
zugsweise durch Funkenerosion. 'orderly: The processing of the sheets to produce 5 ° z. B. by diffusion soldering together verder the cooling air channels and the holes is done pre-connected.
preferably by spark erosion. '
Die erfinduhgsgemäße Hohlschaufel kann als Turbinenlaufschaufel für ein Gasturbinenstrahltriebwerk benutzt werden, da sie festigkeitsmäßig alle An- 55 Sprüche erfüllt. ..:.,-The hollow blade according to the invention can be used as a turbine rotor blade for a gas turbine jet engine, since in terms of strength it has all connections Proverbs fulfilled. ..:., -
Nachstehend wird ein Ausführungsbeispiel der erfindung an Hand der Zeichnung beschrieben. Es zeigen '.'■■.An exemplary embodiment of the invention is described below with reference to the drawing. It show '.' ■■.
Fig. 1 und 2 eine abgebrochene perspektivische 60 Darstellung bzw. eine abgebrochene, auseinandergezogene Darstellung, - :1 and 2 a broken away perspective 60 Representation or a broken, exploded representation, -:
Fig. 3 einen Schnitt nach der Linie3-3 gemäßFig. 3 shows a section along the line 3-3 according to
Claims (7)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB30103/68A GB1175816A (en) | 1968-06-24 | 1968-06-24 | Improvements relating to the Cooling of Aerofoil Shaped Blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1932000A1 DE1932000A1 (en) | 1970-01-08 |
| DE1932000B2 true DE1932000B2 (en) | 1970-11-05 |
Family
ID=10302322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691932000 Withdrawn DE1932000B2 (en) | 1968-06-24 | 1969-06-24 | Cooled hollow blade for flow machines |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3620643A (en) |
| DE (1) | DE1932000B2 (en) |
| FR (1) | FR2011975A1 (en) |
| GB (1) | GB1175816A (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3819295A (en) * | 1972-09-21 | 1974-06-25 | Gen Electric | Cooling slot for airfoil blade |
| US3927952A (en) * | 1972-11-20 | 1975-12-23 | Garrett Corp | Cooled turbine components and method of making the same |
| US3864199A (en) * | 1973-07-26 | 1975-02-04 | Gen Motors Corp | Angular discharge porous sheet |
| GB1530594A (en) * | 1974-12-13 | 1978-11-01 | Rolls Royce | Perforate laminated material |
| US4168348A (en) * | 1974-12-13 | 1979-09-18 | Rolls-Royce Limited | Perforated laminated material |
| GB1550368A (en) * | 1975-07-16 | 1979-08-15 | Rolls Royce | Laminated materials |
| US4004056A (en) * | 1975-07-24 | 1977-01-18 | General Motors Corporation | Porous laminated sheet |
| GB1564608A (en) * | 1975-12-20 | 1980-04-10 | Rolls Royce | Means for cooling a surface by the impingement of a cooling fluid |
| US4376004A (en) * | 1979-01-16 | 1983-03-08 | Westinghouse Electric Corp. | Method of manufacturing a transpiration cooled ceramic blade for a gas turbine |
| US4311433A (en) * | 1979-01-16 | 1982-01-19 | Westinghouse Electric Corp. | Transpiration cooled ceramic blade for a gas turbine |
| GB2049152B (en) * | 1979-05-01 | 1983-05-18 | Rolls Royce | Perforate laminated material |
| US4269032A (en) * | 1979-06-13 | 1981-05-26 | General Motors Corporation | Waffle pattern porous material |
| US4312186A (en) * | 1979-10-17 | 1982-01-26 | General Motors Corporation | Shingled laminated porous material |
| US4382534A (en) * | 1980-06-13 | 1983-05-10 | Rolls-Royce Limited | Manufacture of laminated material |
| US4623087A (en) * | 1983-05-26 | 1986-11-18 | Rolls-Royce Limited | Application of coatings to articles |
| JPH03213602A (en) * | 1990-01-08 | 1991-09-19 | General Electric Co <Ge> | Self cooling type joint connecting structure to connect contact segment of gas turbine engine |
| US5098257A (en) * | 1990-09-10 | 1992-03-24 | Westinghouse Electric Corp. | Apparatus and method for minimizing differential thermal expansion of gas turbine vane structures |
| GB2310896A (en) * | 1996-03-05 | 1997-09-10 | Rolls Royce Plc | Air cooled wall |
| GB0114503D0 (en) * | 2001-06-14 | 2001-08-08 | Rolls Royce Plc | Air cooled aerofoil |
| DE10202783A1 (en) * | 2002-01-25 | 2003-07-31 | Alstom Switzerland Ltd | Cooled component for a thermal machine, in particular a gas turbine |
| EP1462613A1 (en) * | 2003-03-26 | 2004-09-29 | Siemens Aktiengesellschaft | Coolable coating |
| US7488156B2 (en) * | 2006-06-06 | 2009-02-10 | Siemens Energy, Inc. | Turbine airfoil with floating wall mechanism and multi-metering diffusion technique |
| US20110110772A1 (en) * | 2009-11-11 | 2011-05-12 | Arrell Douglas J | Turbine Engine Components with Near Surface Cooling Channels and Methods of Making the Same |
| US8678771B2 (en) * | 2009-12-14 | 2014-03-25 | Siemens Energy, Inc. | Process for manufacturing a component |
| DE102010016204A1 (en) | 2010-03-30 | 2011-10-06 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Delivery line of an agricultural sprayer |
| US8636463B2 (en) * | 2010-03-31 | 2014-01-28 | General Electric Company | Interior cooling channels |
| US20120067054A1 (en) | 2010-09-21 | 2012-03-22 | Palmer Labs, Llc | High efficiency power production methods, assemblies, and systems |
| CH705185A1 (en) * | 2011-06-29 | 2012-12-31 | Alstom Technology Ltd | Blade for a gas turbine and processes for manufacturing such a blade. |
| US20140302278A1 (en) * | 2013-04-09 | 2014-10-09 | General Electric Company | Components with double sided cooling features and methods of manufacture |
| US10598026B2 (en) * | 2016-05-12 | 2020-03-24 | General Electric Company | Engine component wall with a cooling circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB774499A (en) * | 1953-06-19 | 1957-05-08 | Power Jets Res & Dev Ltd | Corrugated-cored elements for use in turbines, compressors and combustion equipment |
| US2920866A (en) * | 1954-12-20 | 1960-01-12 | A V Roe Canada Ltd | Hollow air cooled sheet metal turbine blade |
| GB811586A (en) * | 1956-07-25 | 1959-04-08 | Havilland Engine Co Ltd | Turbine or compressor blades |
| US3067982A (en) * | 1958-08-25 | 1962-12-11 | California Inst Res Found | Porous wall turbine blades and method of manufacture |
| US3240468A (en) * | 1964-12-28 | 1966-03-15 | Curtiss Wright Corp | Transpiration cooled blades for turbines, compressors, and the like |
| US3411794A (en) * | 1966-12-12 | 1968-11-19 | Gen Motors Corp | Cooled seal ring |
-
1968
- 1968-06-24 GB GB30103/68A patent/GB1175816A/en not_active Expired
-
1969
- 1969-06-18 FR FR6920332A patent/FR2011975A1/fr not_active Withdrawn
- 1969-06-20 US US835083A patent/US3620643A/en not_active Expired - Lifetime
- 1969-06-24 DE DE19691932000 patent/DE1932000B2/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US3620643A (en) | 1971-11-16 |
| FR2011975A1 (en) | 1970-03-13 |
| GB1175816A (en) | 1969-12-23 |
| DE1932000A1 (en) | 1970-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EGA | New person/name/address of the applicant | ||
| 8339 | Ceased/non-payment of the annual fee |