EP1574667A1 - Verdichterdiffusor - Google Patents
Verdichterdiffusor Download PDFInfo
- Publication number
- EP1574667A1 EP1574667A1 EP04004895A EP04004895A EP1574667A1 EP 1574667 A1 EP1574667 A1 EP 1574667A1 EP 04004895 A EP04004895 A EP 04004895A EP 04004895 A EP04004895 A EP 04004895A EP 1574667 A1 EP1574667 A1 EP 1574667A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diffuser
- constriction
- housing
- gas turbine
- turbine
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
Definitions
- the invention relates to a gas turbine with a compressor diffuser and there a measure to optimize a radial Mass flow distribution at the inlet of the compressor diffuser.
- the invention also relates to a diffuser itself.
- Diffuser Gas turbines with compressor diffuser, hereinafter referred to as Diffuser referred to, are well known.
- a diffuser is known in its most general form a component of a Pipe in which the cross section grows gradually. This Increase in the cross-section causes a decrease in speed of the medium flowing through, while the static Pressure increases at the same time.
- a combustion chamber and a turbine is a Diffuser usually at the output of the gas turbine, in particular immediately after the turbine, and / or at the exit arranged the compressor.
- the invention is concerned with the mass flow or total pressure distribution, the for optimal operation of the diffuser is required.
- a use of freestanding vanes leads in particular For larger radial gaps to a significant drop in speed the flowing working medium, ie the heated Gas, in the hub area of a turbine shaft at the outlet a Nachleitrades.
- the speed drop goes accompanied by a total pressure drop.
- the speed and pressure distribution is especially then unfavorable if a cross-sectional widening within the Diffusers exclusively via a reduction of the hub radius the hub-side inner contour of the diffuser takes place.
- a weakened Speed profile in the area of the hub side Inner contour then leads to lossy flow separation on the inner contour of the diffuser. This significantly limits the pressure recovery of the diffuser and thus its Overall efficiency.
- the invention is therefore based on the object, with regard to to avoid or reduce the above Disadvantages to specify optimized gas turbine with a diffuser.
- the advantage of the invention is that by the modification the inner contour of the diffuser housing straight at a Ver Whyrdiffuser by the constriction redistribution the mass flow towards the hub of the turbine rotor is caused. This increases in the area of the hub Speed level.
- the constriction is located on the inside of the outer wall of the diffuser housing.
- the constriction can be caused by the fact that material on the inside of the outer wall of the diffuser housing is attached. Another way of training one Such constriction is that of an adapted, the Constriction-containing shaping of the outer wall of the diffuser housing is selected.
- the constriction in the interior of the diffuser in Flow direction of the medium flowing through gradually so that the constriction of the intended operation of the Diffusers (speed reduction and pressure increase for the medium flowing through) not or only negligibly negative affected.
- the constriction occurs at the inlet of the diffuser not abruptly but continuously and in a kind and Way in which in the direction of the medium flowing through a Increase in constriction up to a maximum constriction such that the increase in constriction to the maximum Constriction is significantly greater than the decrease in Constriction following the maximum constriction.
- a gas turbine has a compressor for combustion air, a combustion chamber and a turbine to drive both the compressor as well as a work machine, z. B. a generator, on.
- the combustion chamber is equipped with at least one burner for Combustion of a liquid or gaseous fuel equipped.
- the compressor as well as the turbine each have a number of rotatable blades connected to the turbine shaft on.
- the blades are crowned on the turbine shaft arranged and thus form a number of blade rows.
- both the compressor comprises also the turbine has a number of fixed vanes, which also coronal under the formation of rows of vanes on an inner wall of the housing of compressor or Turbine are attached.
- the vanes serve to guide the flow of the working medium between two each in the flow direction of the working medium seen consecutive blade rows or blade rings.
- a successive pair of one Wreath of vanes or a vane row and out a wreath of blades or a row of blades is also used as a turbine stage or as a compressor stage designated.
- the compressor or Turbine housing remains a radial gap whose size so is dimensioned that during operation of the gas turbine even with thermal expansions the respective materials a touch the blades on the respective inner housing excluded is.
- a radial gap remains between the fixed vanes and the turbine shaft a radial gap. This is also such that a contact between the vanes and the turbine shaft is excluded.
- the diffuser housing 2 has in one Connection area 3, ie in the area of the transition from the compressor the gas turbine to the diffuser 1, one the inner radius of the housing 2 reducing constriction 5.
- One to the connection area 3 belonging portion of the diffuser 1 is as Inlet 4 of the diffuser 1 denotes.
- the inlet 4 has a Ring space contour on. The dimensions of the inlet 4 are in Essentially determined by its inner radius.
- the flow space of the diffuser 1 is radially outward by an outer wall of the diffuser housing 2 and radially inwardly by a hub side Inner contour limited.
- the constriction 5 is located on the inside of an outer wall of the housing 2. It results from the difference of a conventional Annular space contour 6 of the diffuser housing 2 and a causing the constriction, modified annular space contour 7.
- the constriction 5 is either material attachment on the inside of the outside wall or through an adapted one Shape of the outer wall caused.
- the constriction 5 increases within the diffuser 1 in the flow direction of the medium flowing through, that is to say the compressed one Air, gradually.
- the flow direction In the illustration in FIG 1 runs the flow direction from left to right.
- At the inlet 4 of the diffuser 1 takes place - also in the direction of the flowing through Medium - an increase in constriction up to one maximum constriction 5 such that the increase in Constriction to maximum constriction 5 much larger is considered the decrease of constriction following the maximum Constriction 5.
- the length of a route along the outer contour of the Diffuser housing 2 parallel to the flow direction of the medium, while the constriction to the maximum constriction 5 is less than one fifth of the length a route, during which the constriction starting decreases again from the maximum constriction 5.
- the increase of the near-level speed level causes the hub boundary layer against can run a much higher pressure, so the Pressure recovery and the overall efficiency of the compressor is improved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- FIG 1
- eine schematische Darstellung einer Ringraumkontur am Einlass eines Diffusors, und
- FIG 2
- eine graphische Darstellung eines theoretisch berechneten Geschwindigkeitsanstiegs im Bereich der Nabe eines Turbinenläufers.
Claims (8)
- Gasturbine mit einem am Ausgang ihres Verdichters angeordneten Diffusor (1) mit einem Diffusorgehäuse (2),
wobei das Diffusorgehäuse (2) in einem Anschlussbereich (3) zum Anschluss an die Gasturbine eine den Innenradius des Gehäuses (2) verringernde Einschnürung (5) aufweist. - Diffusor (1) mit einem Diffusorgehäuse (2), insbesondere für eine Gasturbine,
wobei das Diffusorgehäuse (2) in einem Anschlussbereich (3) eine den Innenradius des Gehäuses (2) verringernde Einschnürung (5) aufweist. - Gasturbine nach Anspruch 1 oder Diffusor nach Anspruch 2,
wobei die Einschnürung (5) sich am Innern einer Außenwand des Gehäuses (2) befindet. - Gasturbine nach Anspruch 3 oder Diffusor nach Anspruch 3,
wobei die Einschnürung (5) durch Materialanlagerung auf der Innenseite der Außenwand hervorgerufen ist. - Gasturbine nach Anspruch 4 oder Diffusor nach Anspruch 4,
wobei die Einschnürung (5) durch eine angepasste Formgebung der Außenwand hervorgerufen ist. - Gasturbine oder Diffusor nach einem der vorangehenden Ansprüche,
wobei die Einschnürung (5) in Strömungsrichtung des durchströmenden Mediums allmählich abnimmt. - Gasturbine oder Diffusor nach Anspruch 6,
wobei am Einlass (4) des Diffusors (1) in Richtung des durchströmenden Mediums eine Zunahme der Einschnürung bis zu einem maximalen Einschnürung (5) derart erfolgt, dass die Zunahme der Einschnürung bis zur maximalen Einschnürung (5) deutlich größer ist als die Abnahme der Einschnürung im Anschluss an die maximale Einschnürung (5). - Gasturbine oder Diffusor nach Anspruch 7,
wobei die Länge einer Strecke entlang der Außenkontur des Diffusorgehäuses (2) parallel zur Strömungsrichtung des Mediums während derer die Einschnürung bis zur maximalen Einschnürung (5) zunimmt, weniger als ein Fünftel der Länge einer Strecke beträgt, während derer die Einschnürung ausgehend von der maximalen Einschnürung (5) wieder abnimmt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040004895 EP1574667B1 (de) | 2004-03-02 | 2004-03-02 | Verdichterdiffusor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040004895 EP1574667B1 (de) | 2004-03-02 | 2004-03-02 | Verdichterdiffusor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1574667A1 true EP1574667A1 (de) | 2005-09-14 |
EP1574667B1 EP1574667B1 (de) | 2013-07-17 |
Family
ID=34814245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040004895 Expired - Lifetime EP1574667B1 (de) | 2004-03-02 | 2004-03-02 | Verdichterdiffusor |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1574667B1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2194231A1 (de) * | 2008-12-05 | 2010-06-09 | Siemens Aktiengesellschaft | Ringdiffusor für eine Axialturbomaschine |
DE102012215412A1 (de) * | 2012-08-30 | 2014-03-06 | Rolls-Royce Deutschland Ltd & Co Kg | Baugruppe einer Axialturbomaschine und Verfahren zur Herstellung einer solchen Baugruppe |
CN115962154A (zh) * | 2023-03-17 | 2023-04-14 | 潍柴动力股份有限公司 | 过渡段子午流道在机匣侧变窄的压气机、发动机和汽车 |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1448244A (fr) * | 1965-06-23 | 1966-08-05 | Procédé et dispositif pour l'exploitation d'une installation de turbine à vapeur | |
US3625630A (en) * | 1970-03-27 | 1971-12-07 | Caterpillar Tractor Co | Axial flow diffuser |
US3879939A (en) * | 1973-04-18 | 1975-04-29 | United Aircraft Corp | Combustion inlet diffuser employing boundary layer flow straightening vanes |
US4180972A (en) * | 1978-06-08 | 1980-01-01 | General Motors Corporation | Combustor support structure |
GB2057672A (en) * | 1979-07-04 | 1981-04-01 | Rolls Royce | Gas turbine combustion chamber |
US4315715A (en) * | 1978-07-26 | 1982-02-16 | Nissan Motor Company, Limited | Diffuser for fluid impelling device |
SU1657672A1 (ru) * | 1986-07-28 | 1991-06-23 | Производственное объединение "Невский завод" им.В.И.Ленина | Диффузор турбомашины |
US6035964A (en) * | 1998-01-28 | 2000-03-14 | Alstom Energy Systems Gmbh | Gas turbine muffler with diffusor |
JP2000356139A (ja) * | 1999-06-15 | 2000-12-26 | Mitsubishi Heavy Ind Ltd | ガスタービン圧縮機吐出空気の抽気方法 |
US20020078690A1 (en) * | 2000-12-22 | 2002-06-27 | Peter Stuttaford | Fuel air premixer having a diffuser assembly and upstream fuel manifold rings |
EP1227217A2 (de) * | 2001-01-25 | 2002-07-31 | Mitsubishi Heavy Industries, Ltd. | Gasturbine |
EP1253295A2 (de) * | 2001-04-27 | 2002-10-30 | Mitsubishi Heavy Industries, Ltd. | Axialturbine mit einer Stufe in einem Abströmkanal |
-
2004
- 2004-03-02 EP EP20040004895 patent/EP1574667B1/de not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1448244A (fr) * | 1965-06-23 | 1966-08-05 | Procédé et dispositif pour l'exploitation d'une installation de turbine à vapeur | |
US3625630A (en) * | 1970-03-27 | 1971-12-07 | Caterpillar Tractor Co | Axial flow diffuser |
US3879939A (en) * | 1973-04-18 | 1975-04-29 | United Aircraft Corp | Combustion inlet diffuser employing boundary layer flow straightening vanes |
US4180972A (en) * | 1978-06-08 | 1980-01-01 | General Motors Corporation | Combustor support structure |
US4315715A (en) * | 1978-07-26 | 1982-02-16 | Nissan Motor Company, Limited | Diffuser for fluid impelling device |
GB2057672A (en) * | 1979-07-04 | 1981-04-01 | Rolls Royce | Gas turbine combustion chamber |
SU1657672A1 (ru) * | 1986-07-28 | 1991-06-23 | Производственное объединение "Невский завод" им.В.И.Ленина | Диффузор турбомашины |
US6035964A (en) * | 1998-01-28 | 2000-03-14 | Alstom Energy Systems Gmbh | Gas turbine muffler with diffusor |
JP2000356139A (ja) * | 1999-06-15 | 2000-12-26 | Mitsubishi Heavy Ind Ltd | ガスタービン圧縮機吐出空気の抽気方法 |
US20020078690A1 (en) * | 2000-12-22 | 2002-06-27 | Peter Stuttaford | Fuel air premixer having a diffuser assembly and upstream fuel manifold rings |
EP1227217A2 (de) * | 2001-01-25 | 2002-07-31 | Mitsubishi Heavy Industries, Ltd. | Gasturbine |
EP1253295A2 (de) * | 2001-04-27 | 2002-10-30 | Mitsubishi Heavy Industries, Ltd. | Axialturbine mit einer Stufe in einem Abströmkanal |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15 6 April 2001 (2001-04-06) * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2507421C2 (ru) * | 2008-12-05 | 2014-02-20 | Сименс Акциенгезелльшафт | Кольцевой диффузор для осевой турбинной машины, система для осевой турбинной машины, а также осевая турбинная машина |
WO2010063583A1 (de) | 2008-12-05 | 2010-06-10 | Siemens Aktiengesellschaft | Ringdiffusor für eine axialturbomaschine |
JP2012511115A (ja) * | 2008-12-05 | 2012-05-17 | シーメンス アクティエンゲゼルシャフト | 軸流ターボ機械のための環状拡散器、軸流ターボ機械のための配列および軸流ターボ機械 |
EP2455585A1 (de) * | 2008-12-05 | 2012-05-23 | Siemens Aktiengesellschaft | Anordnung für eine Axialturbomaschine sowie Axialturbomaschine |
CN102536912A (zh) * | 2008-12-05 | 2012-07-04 | 西门子公司 | 用于轴流式涡轮机的环形扩压器、装置和轴流式涡轮机 |
RU2485358C2 (ru) * | 2008-12-05 | 2013-06-20 | Сименс Акциенгезелльшафт | Кольцевой диффузор для осевой турбинной машины, система для осевой турбинной машины, а также осевая турбинная машина |
EP2194231A1 (de) * | 2008-12-05 | 2010-06-09 | Siemens Aktiengesellschaft | Ringdiffusor für eine Axialturbomaschine |
US8721273B2 (en) | 2008-12-05 | 2014-05-13 | Siemens Aktiengesellschaft | Ring diffuser for an axial turbomachine |
US8721272B2 (en) | 2008-12-05 | 2014-05-13 | Siemens Aktiengesellschaft | Ring diffuser for an axial turbomachine |
CN102536912B (zh) * | 2008-12-05 | 2015-07-08 | 西门子公司 | 用于轴流式涡轮机的环形扩压器、装置和轴流式涡轮机 |
DE102012215412A1 (de) * | 2012-08-30 | 2014-03-06 | Rolls-Royce Deutschland Ltd & Co Kg | Baugruppe einer Axialturbomaschine und Verfahren zur Herstellung einer solchen Baugruppe |
US9366148B2 (en) | 2012-08-30 | 2016-06-14 | Rolls-Royce Deutschland Ltd & Co Kg | Assembly of an axial turbomachine and method for manufacturing an assembly of this type |
CN115962154A (zh) * | 2023-03-17 | 2023-04-14 | 潍柴动力股份有限公司 | 过渡段子午流道在机匣侧变窄的压气机、发动机和汽车 |
Also Published As
Publication number | Publication date |
---|---|
EP1574667B1 (de) | 2013-07-17 |
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