EP1534932A1 - Turbine a gaz a roue de turbine de type radial - Google Patents
Turbine a gaz a roue de turbine de type radialInfo
- Publication number
- EP1534932A1 EP1534932A1 EP03758237A EP03758237A EP1534932A1 EP 1534932 A1 EP1534932 A1 EP 1534932A1 EP 03758237 A EP03758237 A EP 03758237A EP 03758237 A EP03758237 A EP 03758237A EP 1534932 A1 EP1534932 A1 EP 1534932A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel
- channels
- gas turbine
- series
- outputs
- 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
- 239000007789 gas Substances 0.000 claims abstract description 32
- 239000011819 refractory material Substances 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 240000009088 Fragaria x ananassa Species 0.000 description 1
- 238000001816 cooling 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
- 235000021012 strawberries Nutrition 0.000 description 1
- 238000009423 ventilation Methods 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
- F01D1/34—Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes
-
- 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
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/23—Three-dimensional prismatic
- F05D2250/232—Three-dimensional prismatic conical
-
- 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
- F05D2250/00—Geometry
- F05D2250/30—Arrangement of components
- F05D2250/32—Arrangement of components according to their shape
- F05D2250/323—Arrangement of components according to their shape convergent
Definitions
- the present invention relates to a gas turbine comprising on the one hand a turbine wheel of the radial type and on the other hand a fixed distributor fed by a volute and surrounding the wheel, by means of which the inlet gases coming from a combustion can be brought to the periphery of the wheel before crossing it in the centripetal direction.
- the invention relates more precisely to small radial turbines, namely those whose wheel does not exceed a diameter of the order of 200 mm, for which cooling is difficult and for which reason the temperature of the gases at entry is limited to 950 ° C in the case of a metal wheel.
- a radial type gas turbine according to the invention is characterized in that said turbine wheel is formed in massive form and is traversed, from inlets of its periphery to substantially axial outlets, by first double-inclination channels for said gases, namely channels having a first inclination in the direction of rotation of the wheel with respect to the radial direction, and a second inclination with respect to the axial direction, directing them from the periphery towards the center of the wheel, these first channels being lined with a lining of refractory material of the ceramic type.
- said first channels of the turbine wheel will have a conical shape, their section widening from said inlets to said outlets, whereby the centrifugal force exerted on the linings of refractory material will tend to hold them firmly in said channels during rotation of the turbine wheel.
- said first channels will have, at their ends, protective inserts made of refractory material of the ceramic type, held in place by assemblies with matching shapes in the corresponding end of the channel.
- said turbine wheel may consist of two nested discs fixed to one another, namely a input disc and an output disc, and in that said first channels each comprise a first section passing through the input disc and a second section passing through the output disc, these sections, at different inclinations, connecting one to the other at the junction surface between the two discs.
- This arrangement will give the first channels the different inclinations necessary while making possible their manufacture using conventional tools such as strawberries.
- the inputs of said first channels on the turbine wheel are arranged in a peripheral series of S x N inputs, their outputs of the wheel being arranged in S concentric series each comprising N outputs .
- the turbine wheel can also be characterized in that an input on S, of said first channels, is connected to an output of a first series of N outputs, the next input to an output close to a second series of N outputs etc, the S, th next input, of the group of S inputs considered, being connected to an output close to the Si th series of N outputs, the input still following or first input of the following group of S inputs being connected to another neighboring output of said first series of N outputs, and so on.
- the number S will be between 2 and 5, and the number N between 9 and 15.
- the fixed distributor surrounding the turbine wheel provision may be made for it consisting of a solid crown, preferably made of ceramic, through which there are second channels for the inlet gases, these second channels each being inclined on the corresponding radius of the crown, in the direction provided for the rotation of said wheel, in which case it will be advantageous to also provide second distributor channels constituted by conical holes whose section narrows from their inputs to their outputs.
- the fixed distributor surrounding the turbine wheel may also consist of a series of fixed blades inclined on the corresponding radial direction of the wheel, in the direction provided for the rotation of this last.
- the turbine wheel 1 made of aluminum alloy, has been shown in its form consisting of two concentric discs mutually nested and fixed to each other by bolts 2 masked by a plug 3, namely a disc of inlet 4 and an outlet disc 5.
- the path of the channels 6 of the engine gas which pass through the turbine wheel 1 to drive its rotation have been shown diagrammatically in FIG. 1 by dotted lines, each of these channels comprising a first section 6a passing through the inlet disc 4 and a second section 6b passing through the outlet disc 5 (see FIG. 2); these sections, with different inclinations, connect to each other at the junction surface
- first channels 6 have at their ends widenings 21 and 22 for protective inserts made of refractory material of the ceramic type, held in place by assemblies with matching shapes in the corresponding end of the channel , these assemblies being here of the dovetail type or the like.
- the turbine wheel 1 Via the end hub 7 of the input disc 4, the turbine wheel 1 is cantilevered at the end of a shaft 8 which can connect it to the wheel of a compressor , not shown.
- 9 we schematized the bearing box of this tree. In FIG. 3, a particular possible arrangement of the sections has been shown.
- the outputs of the eleven channel sections corresponding to the eleven inputs e 2 are arranged in an intermediate series of eleven other outlets s
- the sections crossing the output disc 5 of the wheel will be located following the previous ones, without however aligning with them.
- FIG. 4 shows a fixed distributor constituted in the form of a solid ceramic crown 10 surrounding the turbine wheel 1 and crossed by second channels 11 for the inlet gases, for example at number of 19, these channels being each inclined on the corresponding radius of the crown, in the direction provided for the rotation of said wheel, and being constituted by conical holes whose section narrows from their inputs to their outputs (see also figure 5).
- the angle of inclination of the axis of the second channels on the tangent to the perimeter of the distributor at their entry into it is of the order of 19 °.
- Figure 5a shows, in the three-axis coordinate system Or, Oa, Ou, centered in O at the lower end of the axis OX of a second channel 11, the so-called nutation angle ⁇ # 71 ° that does this axis OX with the radial direction Or, and the angle known as of precession ⁇ # 82 ° that does with the axial direction Oa the projection of this axis OX in the horizontal plane aOu, the inclination of the axis OX compared in the vertical plane being of the order of 21 °.
- the engine gas coming from a combustion chamber or the like which is not shown is brought to this distributor 10 by a volute comprising a profiled volute body 12 closed by a closure plate 13, the internal space of this volute narrowing by corner, from its periphery to the distributor.
- the function of the volute is to provide the engine gas with a channel, the cross section of which also tapers progressively around the distributor crown, from the inlet 14 of the volute to a fairing spoiler 15 which closes the space provided between the wall of this volute and the crown 10.
- the function of this spoiler 15 is also to ensure the most uniform flow possible for the engine gas entering the distributor.
- a poronite type shim (not shown) is interposed between the ends of this spoiler 15 and the side walls of the volute 12-13.
- the expanded gases leave the turbine by an outlet ring 16 connected to the fixed distributor 10 and through which also escape the gases leaking through the space, provided with labyrinth seals, formed between the turbine wheel 1 on the one hand , the distributor 10 and this outlet shell 16 on the other hand.
- the space in which the turbine wheel 1 rotates is limited by a screen 17 fixed by a screw assembly on the casing 18 of the turbine and on the bearing box 9 of the shaft 8, and which has the function of limiting the leaks of the hydrodynamic ventilation air around the end hub 7 of the input disc 4 of the turbine wheel 1.
- Another function of this screen 17 is, thanks to a system of four pins positioning 19, to prevent rotation of the fixed distributor 10 when the turbine is put into operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0210977A FR2844298B1 (fr) | 2002-09-05 | 2002-09-05 | Turbine a gaz a roue de turbine de type radial |
FR0210977 | 2002-09-05 | ||
PCT/FR2003/002525 WO2004022921A1 (fr) | 2002-09-05 | 2003-08-13 | Turbine a gaz a roue de turbine de type radial |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1534932A1 true EP1534932A1 (fr) | 2005-06-01 |
EP1534932B1 EP1534932B1 (fr) | 2017-04-05 |
Family
ID=31725848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03758237.6A Expired - Lifetime EP1534932B1 (fr) | 2002-09-05 | 2003-08-13 | Turbine a gaz a roue de turbine de type radial |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1534932B1 (fr) |
AU (1) | AU2003274253A1 (fr) |
FR (1) | FR2844298B1 (fr) |
WO (1) | WO2004022921A1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011042863A2 (fr) | 2009-10-06 | 2011-04-14 | Cmt Systems-Ceramic Micro Turbine Technologies Ltd | Roue de travail sans lame utilisée en tant qu'élément de turbomachine |
RU2599454C2 (ru) * | 2015-01-29 | 2016-10-10 | Федеральное агентство научных организаций Федеральное Государственное Бюджетное Научное Учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства (ФГБНУ ВИЭСХ) | Свободная силовая радиальная турбина с цилиндрическим ротором |
CN111852573A (zh) * | 2020-07-30 | 2020-10-30 | 萍乡北京理工大学高新技术研究院 | 流线隧道式涡轮 |
CN111828347A (zh) * | 2020-07-30 | 2020-10-27 | 萍乡北京理工大学高新技术研究院 | 流线隧道式电动压气机 |
CN111828380A (zh) * | 2020-07-31 | 2020-10-27 | 萍乡北京理工大学高新技术研究院 | 一种流线隧道式压气机轮 |
CN112096509A (zh) * | 2020-09-23 | 2020-12-18 | 萍乡北京理工大学高新技术研究院 | 一种采用外廓式空气轴承的流线隧道式涡轮增压器 |
CN112096465A (zh) * | 2020-09-23 | 2020-12-18 | 萍乡北京理工大学高新技术研究院 | 流线隧道式涡轮发电机 |
CN112096510A (zh) * | 2020-09-23 | 2020-12-18 | 萍乡北京理工大学高新技术研究院 | 一种流线隧道压气机轮增压器 |
CN111963262A (zh) * | 2020-09-23 | 2020-11-20 | 萍乡北京理工大学高新技术研究院 | 一种外廓式空气轴承 |
CN112100776A (zh) * | 2020-09-23 | 2020-12-18 | 萍乡北京理工大学高新技术研究院 | 一种流线隧道式涡轮增压器的设计方法 |
CN112096521A (zh) * | 2020-09-24 | 2020-12-18 | 萍乡北京理工大学高新技术研究院 | 立式流线隧道轮燃气轮机 |
CN112096511A (zh) * | 2020-09-27 | 2020-12-18 | 萍乡北京理工大学高新技术研究院 | 立式流线隧道轮增压器 |
CN112096512A (zh) * | 2020-09-27 | 2020-12-18 | 萍乡北京理工大学高新技术研究院 | 一种流线隧道式涡轮增压器 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US854012A (en) * | 1907-02-12 | 1907-05-21 | Nicholas W Akimoff | Runner for turbines and fluid-pumps. |
GB154287A (en) * | 1919-08-16 | 1920-11-16 | Samuel Arthur Einem Hickson | Improvements in or relating to rotary fluid-pressure engines of the impulse type |
GB276676A (en) * | 1926-08-25 | 1928-06-28 | Hubert Lyal Edey | Improvements in turbine |
US1900558A (en) * | 1928-03-13 | 1933-03-07 | Holzwarth Gas Turbine Co | Nozzle channel construction for explosion turbines |
DE646797C (de) * | 1934-06-01 | 1937-06-21 | Ludwig Kohl Dipl Ing | Gasturbine |
GB574531A (en) * | 1944-02-01 | 1946-01-09 | Charles William Gibbs | Improvements in rotary engines |
GB575346A (en) * | 1944-03-01 | 1946-02-14 | Aluminium Plant & Vessel Co | Improvements in or relating to centrifugal pumps |
US2911189A (en) * | 1953-07-20 | 1959-11-03 | Ohain Hans J Pabst Von | Fluid machine |
US3286984A (en) * | 1965-12-27 | 1966-11-22 | Bachl Herbert | Rotary turbine |
CH520264A (de) * | 1970-10-16 | 1972-03-15 | Jay Tucker Phillip | Rotations-Wärmekraftmaschine |
DE2440475C2 (de) * | 1974-08-23 | 1975-12-11 | Herbert Prof. Dr.-Ing. 8000 Muenchen Bachl | Scheibenförmiges Laufrad einer Strömungsmaschine |
DE2821233C2 (de) * | 1978-05-16 | 1983-07-28 | GETEWENT Gesellschaft für technische und wissenschaftliche Energieumsatzentwicklungen mbH, 8950 Kaufbeuren | Scheibenförmiges Laufrad einer Strömungsmaschine |
US5219271A (en) * | 1989-04-24 | 1993-06-15 | Paul Nachtrieb | High capacity, high efficiency pump |
US6524066B2 (en) * | 2001-01-31 | 2003-02-25 | Bruno H. Thut | Impeller for molten metal pump with reduced clogging |
-
2002
- 2002-09-05 FR FR0210977A patent/FR2844298B1/fr not_active Expired - Fee Related
-
2003
- 2003-08-13 WO PCT/FR2003/002525 patent/WO2004022921A1/fr not_active Application Discontinuation
- 2003-08-13 EP EP03758237.6A patent/EP1534932B1/fr not_active Expired - Lifetime
- 2003-08-13 AU AU2003274253A patent/AU2003274253A1/en not_active Abandoned
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2004022921A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2003274253A1 (en) | 2004-03-29 |
EP1534932B1 (fr) | 2017-04-05 |
WO2004022921A1 (fr) | 2004-03-18 |
FR2844298B1 (fr) | 2006-04-28 |
FR2844298A1 (fr) | 2004-03-12 |
WO2004022921B1 (fr) | 2004-05-27 |
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