EP1207269B1 - Gasturbinenschaufel - Google Patents
Gasturbinenschaufel Download PDFInfo
- Publication number
- EP1207269B1 EP1207269B1 EP00125032A EP00125032A EP1207269B1 EP 1207269 B1 EP1207269 B1 EP 1207269B1 EP 00125032 A EP00125032 A EP 00125032A EP 00125032 A EP00125032 A EP 00125032A EP 1207269 B1 EP1207269 B1 EP 1207269B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- gas turbine
- subspace
- rib
- edge
- 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 - Lifetime
Links
Images
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
- 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
- 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
- F05D2260/205—Cooling fluid recirculation, i.e. after cooling one or more components is the cooling fluid recovered and used elsewhere for other purposes
-
- 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
- F05D2260/232—Heat transfer, e.g. cooling characterized by the cooling medium
- F05D2260/2322—Heat transfer, e.g. cooling characterized by the cooling medium steam
Definitions
- the invention relates to a gas turbine blade with an inner Cavity for guiding a cooling fluid.
- Such a coolable gas turbine blade shows the US 5,431,537.
- Gas turbine blades are extremely high temperatures exposed by flowing around hot gas. For this Basically they have to be cooled. Particularly high thermal Loads is the leading edge of a gas turbine blade exposed. For this reason, the leading edge needs be cooled particularly intensively.
- cooling by means of Cooling air is the lowest possible consumption of cooling air aspired, since the cooling air consumption efficiency the gas turbine lowers.
- To improve the cooling are on the inside of the gas turbine blade turbulators provided, which swirl the cooling medium and thus a better Allow heat transfer.
- the gas turbine blade of the US 5,431,537 is described by the turbulator configuration both achieved a favorable cooling of the leading edge, as well Advantages achieved for the castability of the turbine blade.
- US 5,320,483 shows a steam cooled gas turbine blade.
- a steam cooling is in terms of efficiency the gas turbine cheaper. However, it requires a closed Cooling cycle, because steam in contrast to air not introduced from the blade out into the hot gas channel can be.
- To cool the leading edge is an impact cooling insert used according to the contour of the leading edge Steam leads into a channel, leaving out of this channel via holes steam chilling against the leading edge is directed.
- This construction is manufacturing technology very elaborate and also leads to a comparatively thick and therefore not aerodynamically optimized Leading edge.
- US 6,036,441 shows an open-cooled Turbine blade with multiple cavities, which in fluid communication with each other.
- the object of the invention is the specification of a gas turbine blade, in a production technology simple and thereby aerodynamically favorable cooling of the leading edge possible is.
- this object is achieved by specifying a along a blade axis directed gas turbine blade with a profile that has a suction side, a pressure side, a Has leading edge and a trailing edge, and with a inner cavity in the profile for guiding a cooling fluid, wherein the cavity is adjacent to the leading edge Entrance edge cavity and a towards the Trailing edge adjoining the leading edge cavity first partial cavity, wherein the first part cavity by moving in a direction from the leading edge to Outflow edge extending partition into a first subspace and a second subspace is shared and wherein cooling fluid from the first subspace via impact cooling holes in the leading edge bouncing chilling in the entry edge cavity and from there into the second subspace can be introduced.
- the entry edge cavity is from the first Partial cavity through a semi-rib connected to the profile separated.
- a semi-rib does not extend like otherwise usual with gas turbine blades from the suction side to to the pressure side, but ends in the cavity.
- Such a half rib For example, with a cast turbine blade be poured. Cooling fluid is now from the first subspace guided over the half rib in the leading edge cavity, for which purpose impingement cooling openings are provided in the half-rib are. More preferably, these impact cooling holes are as Slots executed.
- Such a slotted half rib is production technology easy to produce and offers optimal Impingement cooling conditions.
- Preferred dimensions closes in the direction of the trailing edge to the first part cavity a second part cavity, by a extending from the suction side to the pressure side Rib is separated from the first part of the cavity, wherein the Cooling fluid through channels in the rib from the second subspace in the second part cavity can be introduced. Further preferred while the cooling fluid in the first subspace parallel to the blade axis, in the second subspace transverse to the blade axis and in the second part cavity parallel to the blade axis feasible. It thus results in the constellation that the cooling fluid in the two subspaces of the first partial cavity two vertically Having directed flow directions.
- the partition is a sheet. This is currently available in cast gas turbine blades another manufacturing technology Simplification, since no dividing wall is cast along got to. The dividing wall will be in the ready poured scoop simply used. Preferred dimensions, the partition is here jammed in recesses between cast-on turbulators and / or on a particular cast on a rib Offset added. More preferably, the partition also separates the second subspace from the entrance edge cavity, wherein the Partition Opening for introducing the cooling fluid from the entry edge cavity has in the second subspace. These Embodiment is particularly preferred in connection with the Entry edge cavity to the first subspace separating half rib. By the half rib on the one hand and inserted as a sheet metal On the other hand, the partition wall thus becomes the entrance edge cavity separated from the first part cavity. The sheet is preferably supported on the first half rib.
- the gas turbine blade is a vane executed.
- the cooling fluid is steam.
- Steam cooling offers the advantage of cooling air savings and thus leads to an improvement in efficiency and increased performance for the gas turbine.
- a steam supply is good for use as the vanes connected to the housing, via which the cooling steam can be supplied.
- FIG. 1 shows a side view of a gas turbine blade 1.
- the gas turbine blade 1 is designed as a guide vane. It is directed along a blade axis 3.
- the gas turbine blade 1 has a profile 5.
- the profile 5 points a suction side 7 and a pressure side 9. Further points the profile 5 an inlet edge 11 and a trailing edge 13th on.
- the profile 5 is between a housing-side platform 15 and a rotor-side platform 17 is arranged.
- the Profile 5 has an inner cavity 19 for guiding a Cooling fluid on. The structure of the internal cooling structure of the profile 5 will be explained in more detail with reference to the following figures.
- Figure 2 shows a cross section through the gas turbine blade 1 of Figure 1.
- the inner cavity 19 is constructed of a in the region of the leading edge 11 lying entrance edge cavity 21, one in the direction of the trailing edge 13 at the leading edge cavity 21 subsequent first part cavity 23, one adjoining the first part cavity 23 second part cavity 25 and a to the second part cavity 25 adjoining part cavity 27.
- Der first partial cavity 23 is subdivided into a first subspace 31 and a second subspace 33.
- These two subspaces 31, 33 are formed by a partition wall 37, which in first partial cavity 23 extends and extends in the direction of extends the leading edge to the trailing edge, so that the two subspaces 31, 33 in the axial direction next to each other lie.
- the partition wall 37 also borders the second subspace 33 from the leading edge cavity 21 from.
- the leading edge cavity 21 is from the first subspace 31 by a half rib 35 separated, extending from the pressure side 9 in the inner Cavity 19 extends, approximately up to half of the way to the opposite suction side 7.
- the half-rib 35 pressing partition 37 and by the half-rib 35 is thus the leading edge cavity 21 from the first part cavity 23 separately.
- In the semi-rib 35 are slit-like Impact cooling holes 55 arranged, see Figure 3.
- In the Partition wall 37 are delimiting the entrance edge cavity 21
- Side openings 61 are provided.
- the first part cavity 23 is from the second part of the cavity 25 by a from the pressure side 9 to the suction side 7 extending rib 39 separated. Approximately halfway across the rib 39, this has a Paragraph 41, which extends along the blade axis 3.
- first part cavity 23 In the first part cavity 23 are on the inside of the profile 5 transverse to the blade axis 3 extending turbulators 45 arranged. In the entry edge cavity 21 are transverse to the blade axis 3 extending turbulators 43rd arranged on the inside of the profile 5. Between Turbulators 43 and turbulators 45 are approximately parallel to the blade axis 3, a recess 44.
- the partition 37th is designed as a sheet, which at one end in the Recess 44 is held and at the other end on the heel 41 of the rib 39 rests. In addition, the partition wall 37 against the half-rib 35 stretched. This structure allows a particularly easy insertion 37, especially in an otherwise cast gas turbine blade 1.
- cooling fluid 51 in particular steam
- first subspace 31 of the first Partial cavity 23 is introduced.
- the cooling fluid 51 then passes through the openings 61 in the partition wall 37th (see Figure 4) in the second subspace 33, where it is vertical flows to the blade axis 3.
- Cooling fluid 51 in the first subspace 31 parallel to the blade axis 3 led.
- Cooling fluid 51 via channels 63 in the rib 39 in the second Part cavity 25 a where in turn parallel to the blade axis 3 out and derived from the gas turbine guide vane becomes.
- This manufacturing technology particularly simple and therefore cost-effective Construction enables a closed cooling fluid guide, especially for steam cooling, with a lasting favorable aerodynamic design of the leading edge 11.
Description
- FIG 1
- eine Gasturbinenleitschaufel,
- FIG 2
- einen Querschnitt durch eine Gasturbinenleitschaufel,
- FIG 3
- einen Querschnitt durch eine geschlitzte Halbrippe und
- FIG 4
- einen Ausschnitt aus einer Gasturbinenleitschaufel.
Claims (7)
- Entlang einer Schaufelachse (3) gerichtete Gasturbinenschaufel (1) mit einem Profil (5), das eine Saugseite (7), eine Druckseite (9), eine Eintrittskante (11) und eine Abströmkante (13) aufweist, und mit einem inneren Hohlraum (19) im Profil (5) zur Führung eines Kühlfluides (51), wobei der Hohlraum (19) einen an die Eintrittskante (11) angrenzenden Eintrittskanten-Hohlraum (21) und einen sich in Richtung auf die Abströmkante (13) an den Eintrittskanten-Hohlraum (21) anschließenden ersten Teilhohlraum (23) aufweist, wobei der erste Teilhohlraum (23) durch eine sich in einer Richtung von der Eintrittskante (11) zur Abströmkante (13) erstreckende Trennwand (37) in einen ersten Unterraum (31) und einen zweiten Unterraum (33) geteilt ist und wobei Kühlfluid (51) aus dem ersten Unterraum (31) über Prallkühlöffnungen (55) die Eintrittskante (11) prallkühlend in den Eintrittskanten-Hohlraum (21) und von dort in den zweiten Unterraum (33) einleitbar ist,
dadurch gekennzeichnet, dass der Eintrittskanten-Hohlraum (21) vom ersten Teilhohlraum (23) durch eine mit dem Profil (5) verbundene Halbrippe (35) getrennt ist und
dass die Prallkühlöffnungen (55) durch quer zur Halbrippe (35) und in der Halbrippe (35) verlaufende Schlitze gebildet sind. - Gasturbinenschaufel (1) nach Anspruch 1,
bei der sich in Richtung auf die Abströmkante (13) an den ersten Teilhohlraum (23) ein zweiter Teilhohlraum (25) anschließt, der durch eine sich von der Saugseite (7) zur Druckseite (9) erstreckende Rippe (39) vom ersten Teilhohlraum (23) getrennt ist, wobei das Kühlfluid (51) durch Kanäle (63) in der Rippe (39) vom zweiten Unterraum (33) in den zweiten Teilhohlraum (25) einleitbar ist. - Gasturbinenschaufel (1) nach Anspruch 2,
bei der das Kühlfluid (51) im ersten Unterraum (31) parallel zur Schaufelachse (3), im zweiten Unterraum (33) quer zur Schaufelachse (3) und im zweiten Teilhohlraum (25) parallel zur Schaufelachse (3) führbar ist. - Gasturbinenschaufel (1) nach Anspruch 1,
bei der die Trennwand (37) ein Blech ist. - Gasturbinenschaufel (1) nach Anspruch 4,
bei der die Trennwand (37) auch den zweiten Unterraum (33) vom Eintrittskanten-Hohlraum (21) trennt, wobei die Trennwand (37) Öffnungen (61) zur Einleitung des Kühlfluids (51) vom Eintrittskanten-Hohlraum (21) in den zweiten Unterraum (33) aufweist. - Gasturbinenschaufel (1) nach Anspruch 1,
die als Leitschaufel ausgebildet ist. - Gasturbinenschaufel (1) nach Anspruch 1,
bei der das Kühlfluid (51) Dampf ist.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50010300T DE50010300D1 (de) | 2000-11-16 | 2000-11-16 | Gasturbinenschaufel |
EP00125032A EP1207269B1 (de) | 2000-11-16 | 2000-11-16 | Gasturbinenschaufel |
CA002362020A CA2362020A1 (en) | 2000-11-16 | 2001-11-14 | Gas turbine blade |
JP2001350480A JP4109445B2 (ja) | 2000-11-16 | 2001-11-15 | ガスタービン翼 |
US10/004,476 US6572329B2 (en) | 2000-11-16 | 2001-11-16 | Gas turbine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00125032A EP1207269B1 (de) | 2000-11-16 | 2000-11-16 | Gasturbinenschaufel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1207269A1 EP1207269A1 (de) | 2002-05-22 |
EP1207269B1 true EP1207269B1 (de) | 2005-05-11 |
Family
ID=8170399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00125032A Expired - Lifetime EP1207269B1 (de) | 2000-11-16 | 2000-11-16 | Gasturbinenschaufel |
Country Status (5)
Country | Link |
---|---|
US (1) | US6572329B2 (de) |
EP (1) | EP1207269B1 (de) |
JP (1) | JP4109445B2 (de) |
CA (1) | CA2362020A1 (de) |
DE (1) | DE50010300D1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE50108466D1 (de) * | 2001-08-09 | 2006-01-26 | Siemens Ag | Kühlung einer Turbinenschaufel |
US6742991B2 (en) * | 2002-07-11 | 2004-06-01 | Mitsubishi Heavy Industries, Ltd. | Turbine blade and gas turbine |
US7137779B2 (en) * | 2004-05-27 | 2006-11-21 | Siemens Power Generation, Inc. | Gas turbine airfoil leading edge cooling |
GB2441771B (en) * | 2006-09-13 | 2009-07-08 | Rolls Royce Plc | Cooling arrangement for a component of a gas turbine engine |
US7762784B2 (en) * | 2007-01-11 | 2010-07-27 | United Technologies Corporation | Insertable impingement rib |
WO2010131385A1 (ja) | 2009-05-11 | 2010-11-18 | 三菱重工業株式会社 | タービン静翼およびガスタービン |
US9127561B2 (en) * | 2012-03-01 | 2015-09-08 | General Electric Company | Turbine bucket with contoured internal rib |
CA2954785A1 (en) * | 2016-01-25 | 2017-07-25 | Rolls-Royce Corporation | Forward flowing serpentine vane |
US20180210734A1 (en) * | 2017-01-26 | 2018-07-26 | Alibaba Group Holding Limited | Methods and apparatus for processing self-modifying codes |
CN108979734B (zh) * | 2018-07-18 | 2021-05-28 | 上海交通大学 | 一种带有旋流的涡轮叶片多通道冷却结构和装置 |
CN111764967B (zh) * | 2020-07-06 | 2022-10-14 | 中国航发湖南动力机械研究所 | 涡轮叶片尾缘冷却结构 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE557503A (de) * | 1956-05-15 | |||
US3574481A (en) * | 1968-05-09 | 1971-04-13 | James A Pyne Jr | Variable area cooled airfoil construction for gas turbines |
FR2221020A5 (de) * | 1973-03-09 | 1974-10-04 | Gen Electric | |
GB1508571A (en) * | 1973-10-13 | 1978-04-26 | Rolls Royce | Hollow cooled blade or vane for a gas turbine engine |
GB1587401A (en) * | 1973-11-15 | 1981-04-01 | Rolls Royce | Hollow cooled vane for a gas turbine engine |
GB1467483A (en) * | 1974-02-19 | 1977-03-16 | Rolls Royce | Cooled vane for a gas turbine engine |
US4025226A (en) * | 1975-10-03 | 1977-05-24 | United Technologies Corporation | Air cooled turbine vane |
US4063851A (en) * | 1975-12-22 | 1977-12-20 | United Technologies Corporation | Coolable turbine airfoil |
US5667359A (en) * | 1988-08-24 | 1997-09-16 | United Technologies Corp. | Clearance control for the turbine of a gas turbine engine |
US5320483A (en) | 1992-12-30 | 1994-06-14 | General Electric Company | Steam and air cooling for stator stage of a turbine |
US5431537A (en) | 1994-04-19 | 1995-07-11 | United Technologies Corporation | Cooled gas turbine blade |
US5464322A (en) * | 1994-08-23 | 1995-11-07 | General Electric Company | Cooling circuit for turbine stator vane trailing edge |
US5762471A (en) * | 1997-04-04 | 1998-06-09 | General Electric Company | turbine stator vane segments having leading edge impingement cooling circuits |
US6036441A (en) * | 1998-11-16 | 2000-03-14 | General Electric Company | Series impingement cooled airfoil |
-
2000
- 2000-11-16 DE DE50010300T patent/DE50010300D1/de not_active Expired - Lifetime
- 2000-11-16 EP EP00125032A patent/EP1207269B1/de not_active Expired - Lifetime
-
2001
- 2001-11-14 CA CA002362020A patent/CA2362020A1/en not_active Abandoned
- 2001-11-15 JP JP2001350480A patent/JP4109445B2/ja not_active Expired - Fee Related
- 2001-11-16 US US10/004,476 patent/US6572329B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US20020085908A1 (en) | 2002-07-04 |
JP2002161705A (ja) | 2002-06-07 |
DE50010300D1 (de) | 2005-06-16 |
CA2362020A1 (en) | 2002-05-16 |
US6572329B2 (en) | 2003-06-03 |
JP4109445B2 (ja) | 2008-07-02 |
EP1207269A1 (de) | 2002-05-22 |
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