WO2004001222A1 - Schaufelrad für kompakte strömungsmaschinen - Google Patents
Schaufelrad für kompakte strömungsmaschinen Download PDFInfo
- Publication number
- WO2004001222A1 WO2004001222A1 PCT/EP2003/006442 EP0306442W WO2004001222A1 WO 2004001222 A1 WO2004001222 A1 WO 2004001222A1 EP 0306442 W EP0306442 W EP 0306442W WO 2004001222 A1 WO2004001222 A1 WO 2004001222A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impeller
- flow
- blades
- rotation
- pressure
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract 4
- 238000010276 construction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013598 vector 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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
- F01D1/06—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines traversed by the working-fluid substantially radially
-
- 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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
- F01D1/12—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines with repeated action on same blade ring
- F01D1/14—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines with repeated action on same blade ring traversed by the working-fluid substantially radially
-
- 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
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
- F03B1/02—Buckets; Bucket-carrying rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Definitions
- the invention relates to a paddle wheel for single-stage or multi-stage turbomachines which can be used as power machines (turbines) or work machines (pumps, compressors) or in combination (turbochargers, pump turbines).
- Turbomachines are energy converters that change the angular momentum of a flow and thus its pressure. Turbines use a pressure drop to remove useful work from the flow, pumps and compressors deliver fluids to a higher pressure level. The pressure difference between the inflow and outflow of a machine is impressed or extracted using one or more stages. Each stage has its own impeller, which is flowed through radially, axially or diagonally. The specific theoretical blade work Y of such an impeller is determined according to the well-known Euler equation for turbomachines (Herbert Sigioch, Turbomachines, Hanser Verlag 1993, page 61):
- Impeller material depends.
- the load on the impeller increases as a result of centrifugal forces from a high peripheral speed Strength limit, a turbomachine must always be designed in several stages.
- the object of the invention is to increase the maximum step work of a single step at the same speed without increasing the material load. In many cases, this means that there is no need for multiple stages, or fewer stages are required than before.
- Figure 1 shows the flow path through the impeller for the application of a turbine.
- Figure 2 shows the example of a design for an impeller according to the invention.
- the peripheral speed of the suction edge must be as large as possible.
- the impeller consists of two separate sets of blades, one on the pressure side (1) and one on the suction side (2), side by side with the same outside diameter. Both vane sets are connected in the interior of the impeller via an unbladed fillet, which deflects the fluid from the pressure-side vane set into the suction-side vane set. On the pressure side, the fluid flows in radially or diagonally to the axis of rotation, and also on the suction side.
- EP 0 984 136 A1 describes a turbine, the impeller of which has two sets of blades which are first flowed through from inside to outside and then from outside to inside, the flow between the two sets of blades being guided through a fixed guide vane. This corresponds to a conventional two-stage turbine, with the fixed guide vane generating additional losses between the stages. Bladed and non-bladed fillets are known from DE-PS 148 390 and DE-PS 174 673.
- DE-PS 148 390 already has two sets of blades, but the fillet is divided by intermediate webs to prevent the passage of steam from one blade chamber into the other, so that the peripheral speed of the fluid matches that of the wheel. This means that the desired effect to increase step work cannot be achieved.
- a non-bladed fillet is described in DE-PS 174 673, but there is no second set of blades in the impeller, so that its step work is also not increased.
- US-PS 1 076 952 an impeller with two sets of blades is described, however flow through in parallel, a multi-flow impeller. This means that a higher volume flow can be processed, but the specific step work is not increased.
- the new impeller increases the specific work of a single step.
- Figure 1.1 shows a section through the impeller parallel to the axis of rotation.
- the fluid flows into the impeller on the pressure side (1), is turned between X1 and X2 in the fillet, and flows out again at (2) on the suction side.
- Figure 1.2 shows a section through the impeller perpendicular to the axis of rotation with the flow path and the speed triangles of the
- Pressure side (1) and the suction side (2) One blade of each of the two blade sets is shown.
- the velocity triangles of the flow show the vectors with absolute speed c, circumferential speed u, and relative speed w.
- the pressure-side vane (1) reverses the swirl direction of the flow against the direction of rotation of the impeller.
- the flow leaves the set of blades on the pressure side and follows a helical path in the fillet.
- it flows into the suction-side blade set (2) and leaves it with a very high counter-swirl at the suction edge.
- Figure 1.3 shows the components of the pressure-side absolute flow in the radial direction and circumferential direction.
- Figure 1.4 shows the components of the absolute flow on the suction side.
- the step work per impeller can be determined from the example with previously known suction-side swirl freedom (Y.ALT) and high suction-side counter-swirl (Y.NEU) according to the invention:
- the step work of the impeller increases by a factor of 3 because the suction and pressure edges are at the same distance from the axis of rotation and the fluid flows out with a high counter-swirl.
- Figure 2 shows an example of the design of a single-flow radial impeller for a turbine.
- Figure 2.1 shows the example in an isometric view.
- Figure 2.2 shows a turbine impeller with sectional views showing the blading on the pressure side (A-A), the blading on the suction side (B-B) and the fillet (C-C). It is obvious that the geometry and number of blades must be different on the pressure side and the suction side: on the pressure side, the example has 36 short and steep blades, on the suction side there are only 12, but elongated and flat blades.
- Multi-flow impellers are created by putting mirror-symmetrical wheels together, whereby the common central web can then be omitted, and the adjacent blade sets of two wheels can be combined to form a common blade set that is twice as wide (without separate illustration).
- turbomachines can be built smaller and lighter than before.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003250839A AU2003250839A1 (en) | 2002-06-20 | 2003-06-18 | Impeller for compact turbo machines |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10227426A DE10227426C1 (de) | 2002-06-20 | 2002-06-20 | Schaufelrad für kompakte Strömungsmaschinen |
DE10227426.6 | 2002-06-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004001222A1 true WO2004001222A1 (de) | 2003-12-31 |
Family
ID=7714686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/006442 WO2004001222A1 (de) | 2002-06-20 | 2003-06-18 | Schaufelrad für kompakte strömungsmaschinen |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2003250839A1 (de) |
DE (1) | DE10227426C1 (de) |
WO (1) | WO2004001222A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10261790B4 (de) * | 2002-12-23 | 2006-09-07 | Robert Bosch Gmbh | Strömungsmaschinenanordnung |
DE102005032002A1 (de) * | 2005-07-08 | 2007-01-18 | Daimlerchrysler Ag | Abgasturbolader für eine Brennkraftmaschine und Brennkraftmaschine mit einem Abgasturbolader |
IT1396927B1 (it) | 2009-11-13 | 2012-12-20 | Alfonsi | Turbina ad elevate prestazioni, particolarmente a potenza specifica incrementata. |
FR2954801A1 (fr) * | 2009-12-31 | 2011-07-01 | Gilbert Ly | Propulseur sans emission de co2 ni de dechets radioactifs, necessitant un couple minimal, base sur la theorie du vide paradoxal |
US20140186170A1 (en) * | 2012-12-27 | 2014-07-03 | Ronald E. Graf | Centrifugal Expanders And Compressors Each Using Rotors In Both Flow Going From Periphery To Center And Flow Going From Center To Periphery Their Use In Engines Both External Heat And Internal Combustion. Means to convert radial inward flow to radial outward flow with less eddy currents |
DE102013220717B4 (de) * | 2013-10-14 | 2016-04-07 | Continental Automotive Gmbh | Pumpe |
IT201600105432A1 (it) * | 2016-10-20 | 2017-01-20 | Algerino Patrignani | Cilindro turbina |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE170176C (de) * | ||||
GB191000279A (en) * | 1910-01-05 | 1910-10-20 | Josef Novak | Improvements in Turbines and the like. |
FR843638A (fr) * | 1938-03-12 | 1939-07-06 | Materiel Electrique S W Le | Turbo-pompe |
US2429978A (en) * | 1945-03-28 | 1947-11-04 | Blanchard Richard | Centripetal-centrifugal pump |
WO2001094753A2 (de) * | 2000-06-06 | 2001-12-13 | Martin Ziegler | Strömungskraftmaschine zur nutzung geringer druckdifferenzen |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE148390C (de) * | ||||
DE174673C (de) * | ||||
US1076952A (en) * | 1909-10-29 | 1913-10-28 | Benjamin S Church | Expansible-fluid turbine. |
EP0984136A1 (de) * | 1998-09-01 | 2000-03-08 | SCHMID & WEZEL GmbH & Co. | Doppelseitige Zentrifugal- Zentripedalturbine |
-
2002
- 2002-06-20 DE DE10227426A patent/DE10227426C1/de not_active Expired - Fee Related
-
2003
- 2003-06-18 AU AU2003250839A patent/AU2003250839A1/en not_active Abandoned
- 2003-06-18 WO PCT/EP2003/006442 patent/WO2004001222A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE170176C (de) * | ||||
GB191000279A (en) * | 1910-01-05 | 1910-10-20 | Josef Novak | Improvements in Turbines and the like. |
FR843638A (fr) * | 1938-03-12 | 1939-07-06 | Materiel Electrique S W Le | Turbo-pompe |
US2429978A (en) * | 1945-03-28 | 1947-11-04 | Blanchard Richard | Centripetal-centrifugal pump |
WO2001094753A2 (de) * | 2000-06-06 | 2001-12-13 | Martin Ziegler | Strömungskraftmaschine zur nutzung geringer druckdifferenzen |
Also Published As
Publication number | Publication date |
---|---|
AU2003250839A1 (en) | 2004-01-06 |
DE10227426C1 (de) | 2003-07-31 |
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