WO2005038243A1 - Organe formant pointe pour roue de machine hydraulique, procede d'assemblage d'une telle roue, roue et machine hydraulique equipees d'un tel organe - Google Patents
Organe formant pointe pour roue de machine hydraulique, procede d'assemblage d'une telle roue, roue et machine hydraulique equipees d'un tel organe Download PDFInfo
- Publication number
- WO2005038243A1 WO2005038243A1 PCT/FR2004/002645 FR2004002645W WO2005038243A1 WO 2005038243 A1 WO2005038243 A1 WO 2005038243A1 FR 2004002645 W FR2004002645 W FR 2004002645W WO 2005038243 A1 WO2005038243 A1 WO 2005038243A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- hydraulic machine
- converging
- ceiling
- body according
- Prior art date
Links
Classifications
-
- 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
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/125—Rotors for radial flow at high-pressure side and axial flow at low-pressure side, e.g. for Francis-type turbines
-
- 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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/04—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for diminishing cavitation or vibration, e.g. balancing
-
- 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
- TIP-FORMING MEMBER FOR A WHEEL OF A HYDRAULIC MACHINE METHOD FOR ASSEMBLING SUCH A WHEEL, WHEEL AND HYDRAULIC MACHINE EQUIPPED WITH SUCH A MEMBER
- the present invention relates to a member capable of being attached to the ceiling of a hydraulic machine wheel.
- the invention also relates to a method of mounting such a wheel.
- the invention finally relates to a wheel equipped with such a member, as well as to a hydraulic machine comprising such a wheel.
- a member capable of being attached to the ceiling of a hydraulic machine wheel.
- the invention also relates to a method of mounting such a wheel.
- the invention finally relates to a wheel equipped with such a member, as well as to a hydraulic machine comprising such a wheel.
- a member In the field of hydraulic turbines, it is known, for example from DE-C-971 042, to equip the downstream part of the ceiling of a wheel with an axisymmetric member sometimes called "tip", the external surface of which substantially extends the wet surface of the wheel ceiling and has a decreasing diameter downstream.
- This member or "tip" extends the guidance of the flow to near the axis of rotation of the wheel.
- guide members or tips in pumps,
- the flow passing through the wheel can give rise to vortices or turbulences in the form of a “torch” or “corkscrew” which give the flow an asymmetrical character with respect to the axis of rotation. of the wheel.
- This torch turbulence is particularly troublesome insofar as it causes pressure and / or power fluctuations which can affect the stability of the network supplied by the machine or the mechanical performance of this machine. It is to these drawbacks that the invention more particularly intends to remedy by proposing a new member which can be attached to the ceiling of a wheel and which allows better guidance of the flow in the vicinity of the axis of rotation of the wheel.
- the invention relates to a member capable of being attached to the ceiling or the hub of a wheel of a hydraulic machine, this member being provided with an axisymmetric surface capable of being arranged in the extension of the wetted surface of the ceiling or hub of the wheel and converging, moving away from this wet surface and towards the axis of rotation of the wheel when this member is attached to this wheel.
- This member is characterized in that it is also seen from a second axisymmetric surface, offset axially with respect to the converging surface and itself diverging away from the first converging surface.
- the member of the invention makes it possible to effectively guide the flow in a turbine wheel downstream from the ceiling or from the hub and near the axis of rotation of the wheel, which modifies the structure of the "turbulent torches".
- This member is adapted to be mounted on a Francis wheel equipping a turbine and provides substantially the same advantages in the case of a wheel equipping a Francis type pump or turbine pump or any other type of turbine or hydraulic pump turbine, in particular of propeller type, Deriaz, Kaplan.
- the second surface is offset axially, relative to the first, opposite the ceiling or the hub of the wheel.
- the device of the invention can be used in the context of a new installation or in the context of the rehabilitation of an existing installation.
- a member in accordance with the invention can incorporate one or more of the following characteristics taken from any technically admissible combination.
- the member is provided with a generally cylindrical surface disposed between the above-mentioned converging and diverging surfaces; -
- the member is provided with a termination surface extending the diverging surface opposite the converging surface.
- This termination surface may have a substantially straight generator or, on the contrary, a curved generator; -
- the aforementioned surfaces have symmetry of revolution about a common axis which coincides with the axis of rotation of the wheel when the member is attached to this wheel; -
- the member can be made of metal or composite material; -
- the organ can be in one piece or formed from several assembled parts, the converging and divergent surfaces can be, in the second case, formed by two separate parts of this organ. In this second case, the relative position of the converging and diverging surfaces can be adjustable.
- the invention also relates to a hydraulic machine wheel equipped with a member as described above. Such a wheel has better hydraulic characteristics and makes it possible to change the hydrodynamic structure of turbulent torches developing nearby.
- the invention also relates to a hydraulic machine which comprises a wheel as previously described.
- a machine can be a turbine, a pump or a pump-turbine.
- the invention finally relates to a method of assembling a wheel or a machine as described above which comprises a step in which a member as previously described is fixed to the ceiling of this wheel.
- FIG. 1 is a perspective view downstream of a turbine wheel according to the invention during equipment with a member according to a first embodiment of the invention
- Figure 2 is a side view with partial cutaway of the wheel of Figure 1 equipped with the corresponding member, this member being shown in longitudinal section
- - Figure 3 is a side view of a member according to a second embodiment of the invention
- - Figure 4 is a view similar to Figure 3, for a member according to a third embodiment of the invention
- - Figure 5 is a view similar to Figure 3, for a member according to a fourth embodiment of the invention
- FIG. 1 is a perspective view downstream of a turbine wheel according to the invention during equipment with a member according to a first embodiment of the invention
- Figure 2 is a side view with partial cutaway of the wheel of Figure 1 equipped with the corresponding member, this member being shown in longitudinal section
- - Figure 3 is a side view of a member according to a second embodiment of the invention
- - Figure 4 is a view similar to Figure 3, for a member
- FIGS. 1 and 2 are views similar to FIG. 3, for a member according to a sixth embodiment of the invention and - Figure 7 is a view similar to Figure 3, for a member according to a sixth embodiment of one embodiment of the invention.
- the Francis 1 turbine wheel shown in FIGS. 1 and 2 comprises identical vanes 2 regularly distributed around a central axis XX ′ of rotation of the wheel 1.
- a ceiling 3 is provided in the upper and internal radial part of the wheel 1 , while a belt 4 borders the lower, radial and external part of the blades 2.
- a flow duct is thus created between each pair of two adjacent blades, this duct being delimited by the ceiling 3 and the belt 4.
- a member 10 forming a “tip” is intended to be mounted on the downstream part 31 of the ceiling 3 in order to at least partially close the access by the downstream to the internal volume V of this ceiling, this internal volume having to remain accessible for the mounting of the wheel 1, in particular its connection with the shaft of an alternator.
- the member or tip 10 comprises a frustoconical portion 11 whose external surface 11a is dimensioned to extend the wet surface 31a of the ceiling 3.
- X ⁇ 0 -X' ⁇ o the central axis of the member 10 which is, in practice , the axis of symmetry of it.
- the surface 11a which is centered on the axis X 10 -X' ⁇ o converges towards the axis Xio-X'io away from the surface 31a when the member 10 is mounted on the wheel 1.
- the member 10 also includes a portion 12, cylindrical and of circular section, which extends the portion 11 opposite the downstream part 31 of the ceiling 3. Note 12a the external surface of this part 12.
- the member 10 also includes a second frusto-conical part 13 centered on the axis io-X'io and which extends the part 12 opposite the portion 11 and of which the external surface is noted 13a.
- the member 10 finally comprises a cylindrical part with circular section 14 of which we note 14a the external surface.
- the surfaces 11a, 12a, 13a and 14a are intended to be wetted by the flow of water E circulating between the blades 2.
- the surface 13a is therefore downstream of the surface 11a and the flow E coming from the conduits created between the adjacent blades can converge towards the axis XX 'by licking the surface 11a, then diverging by licking the surface 13a and finally flowing downstream by licking the surface 14a. Due to this movement of convergence and divergence of the flow E, the hydrodynamic structure of the turbulent torches or of the corkscrew vortices is modified in the vicinity of the axis XX ′. In other words, the surfaces 11a and 13a make it possible to give the flow E a centripetal component in the direction of the axis Xio-X'io then a centrifugal component with respect to this axis.
- the member 10 is bipartite and consists of a first part 10a which forms the portions 11 and 12 and a second part 10b which forms the portions 13 and 14.
- the assembly between parts 10a and 10b can be achieved by any suitable means.
- the circular part 10ç_ of the part 10a which is intended to be engaged in the part 10b can be provided with several tapped holes 10d in each of which a screw 10e can be selectively screwed, the triangular head of which is received in a correspondingly shaped housing formed in the part 10b.
- the member 10 can be mounted in one operation on the wheel 1, as shown by the arrow ⁇ in FIG. 1.
- the fact that the member 10 is bipartite also makes it possible to mount it in two successive steps on the wheel 1, this which takes into account the fact that the portion 14 of the member 10 can protrude below the belt 4 over a significant distance d i4 .
- the member 10 is advantageously made of metal, in particular stainless steel or bronze. It can also be made of composite material, with an organic material resin loaded with reinforcing fibers, such as glass, carbon or aramid fibers.
- elements similar to those of first embodiment bear identical references increased by 100.
- the member 110 of this embodiment comprises two frustoconical portions 111 and 113.
- the portion 111 is convergent in the direction of the central axis Xuo-X'no of the member 110 in the direction of water flow when the member 110 equips a Francis turbine wheel.
- the portion 113 is divergent with respect to this same axis and when the same flow is considered.
- 111a and 113a respectively denote the wetted external surfaces of these portions.
- This embodiment has the particular advantage of great simplicity and low inertia since it has no cylindrical portion similar to portions 12 and 14 of the first embodiment. It can be considered that the height of the cylindrical portion which would correspond to the portion 12 of the first embodiment is here zero.
- the surface 111a which converges towards the axis Xuo-X'no in the direction of flow E, is arranged upstream of the surface 113a which diverges with respect to this axis in the direction of this flow.
- the surfaces 111a and 113a converge towards one another.
- elements similar to those of the first embodiment bear identical references increased by 200.
- the member 210 of this embodiment has the overall shape of a coil, with a portion 211 whose external surface 211a is convergent in the direction of the central axis X2io-X 7 2io of this member in the direction of flow E when this member is mounted on a wheel of the wheel type 1.
- This organ also includes a cylindrical central portion 212 of which 212a denotes the wet external surface, as well as a divergent portion 213 of which 213a denotes the external surface.
- the surfaces 211a and 213a are not frustoconical but have a curved generator with a concavity facing outwards, which makes it possible to obtain a tangential connection between the surfaces 211a and 21-2a, of a part, 212a and 213a, on the other hand.
- elements similar to those of the first embodiment bear identical references increased by 300.
- the member 310 of this embodiment differs from that of the first embodiment.
- the external surface 313a of the divergent portion 313 has a curved generator with its concavity towards the central axis X3io-X ' 3 ⁇ o of the member 310, which gives this portion a domed shape.
- a converging portion 311, a cylindrical portion 312 and a cylindrical portion 314 are provided.
- elements similar to those of the first embodiment bear identical references increased by 400.
- This embodiment differs from the previous one in that the downstream portions 413 and 414 are both curved generators with a concavity facing the central axis X 4 ⁇ 0 - X ' 410 of this member 410.
- the upstream portions 411 and 412 have the same geometry as in the first embodiment. There are respectively 411a, 412a, 413a and 413a the wet external surfaces of these portions.
- elements similar to those of the first embodiment bear identical references increased by 500.
- the convergent portion 511 of this embodiment has an external surface 511a the generator is curved with a concavity facing the exterior, in a similar manner to the surface 211a of the member 210 of the third embodiment.
- a cylindrical portion 512 extends the part 511 and its external surface 512a is at. straight generator.
- a divergent portion 513 extends the portion 512 and its outer surface 513a has a curved generator, while a portion 514 extends the portion 514 with an outer surface 514a whose generator is also curved, the portions 513 and 514 together defining a shape d bulb or bulb corresponding to the fact that the surface 514 extends to the level of the central axis Xsio-X'sxo of the member 510.
- the portions 313 and 314, 413 and 414, respectively 513 and 514 can be adjustable in height, continuously or incrementally, relative to the portions 311 and 312, 411 and 412, respectively 511 and 512, as shown by the double arrow F 2 .
- the member according to the invention can be in one piece or formed from two or more than two main parts, with, in this second case, the advantages mentioned with regard to the first embodiment.
- the technical characteristics of the various embodiments described above can be combined with one another within the scope of the present invention.
- all of the members shown can be mounted on a wheel of the type of wheel 1 shown with the first embodiment.
- a member according to the invention can be mounted on a wheel fitted to a pump urn or a pump-turbine.
- its part furthest from the wheel ceiling is preferably closed, that is to say does not have an opening in which water could flow from the lower upstream pipe. In that case, the flow takes place in the opposite direction to that shown by the arrows E in the figures.
- the invention has been shown during its implementation with a Francis wheel. It is however applicable to other types of hydraulic machines, in particular of the propeller, Deriaz or Kaplan type. In this case, the member of the invention is hung on the hub of the turbine or of the pump.
- the first surface converging in the direction of the axis of rotation of the wheel in the direction of flow, is, in the mounted configuration of the member, disposed upstream of the second surface, diverging with respect to to this axis, which gives the flow in the wheel a centripetal component, towards the axis of the member then merged with the axis of rotation of the wheel, then a centrifugal component.
- the second surface is formed, with respect to the first surface, opposite the part of the member 10, 110, 210,
- first and second surfaces of the member converge towards one another.
- the first surface of the member according to the invention converges towards the second. Its second surface, meanwhile, diverges away from the first.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Automatic Assembly (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200430774T SI1702158T1 (sl) | 2003-10-16 | 2004-10-15 | Del za formiranje konice na tekalnem kolesu hidravličnega stroja, postopek sestavljanja tovrstnegakolesa ter hidravlični stroj, opremljen s tovrstnim kolesom |
EP04791556A EP1702158B1 (fr) | 2003-10-16 | 2004-10-15 | Organe formant pointe pour roue de machine hydraulique, procede d'assemblage d'une telle roue, roue et machine hydraulique equipees d'un tel organe |
DE602004013194T DE602004013194T2 (de) | 2003-10-16 | 2004-10-15 | Spitzenbildungselement für das rad einer hydraulischen maschine, verfahren zur montage solch eines rads und mit solch einem element versehene hydraulische maschine |
CA2540650A CA2540650C (fr) | 2003-10-16 | 2004-10-15 | Organe formant pointe pour roue de machine hydraulique, procede d'assemblage d'une telle roue, roue et machine hydraulique equipees d'un tel organe |
BRPI0415343A BRPI0415343B1 (pt) | 2003-10-16 | 2004-10-15 | órgão, roda de máquina hidráulica, máquina hidráulica, e, processo de montagem de uma roda |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0312101A FR2861144B1 (fr) | 2003-10-16 | 2003-10-16 | Organe formant pointe pour roue de machine hydraulique, procede d'assemblage d'une telle roue, roue et machine hydraulique equipees d'un tel organe |
FR0312101 | 2003-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005038243A1 true WO2005038243A1 (fr) | 2005-04-28 |
Family
ID=34385211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2004/002645 WO2005038243A1 (fr) | 2003-10-16 | 2004-10-15 | Organe formant pointe pour roue de machine hydraulique, procede d'assemblage d'une telle roue, roue et machine hydraulique equipees d'un tel organe |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP1702158B1 (fr) |
CN (1) | CN100443717C (fr) |
AT (1) | ATE392549T1 (fr) |
BR (1) | BRPI0415343B1 (fr) |
CA (1) | CA2540650C (fr) |
DE (1) | DE602004013194T2 (fr) |
ES (1) | ES2305872T3 (fr) |
FR (1) | FR2861144B1 (fr) |
PT (1) | PT1702158E (fr) |
SI (1) | SI1702158T1 (fr) |
WO (1) | WO2005038243A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010094887A1 (fr) | 2009-02-18 | 2010-08-26 | Alstom Hydro France | Installation de conversion d'énergie hydraulique et procédé de commande d'une telle installation |
WO2012017150A1 (fr) | 2010-07-21 | 2012-02-09 | Alstom Hydro France | Roue de turbine francis avec une répartition angulaire des aubes non périodique |
JP2013234621A (ja) * | 2012-05-10 | 2013-11-21 | Toshiba Corp | フランシス水車のランナ、フランシス水車 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2928422B1 (fr) * | 2008-03-05 | 2013-07-05 | Alstom Hydro France | Roue francis de turbine hydraulique equipee d'un organe formant pointe et procede de reduction des fluctuations utilisant une telle roue. |
WO2014036632A1 (fr) * | 2012-09-10 | 2014-03-13 | Andritz Hydro Ltd. | Turbine hydraulique ayant une couronne à capuchon extensible |
CN103982357A (zh) * | 2014-05-26 | 2014-08-13 | 哈尔滨电机厂有限责任公司 | 一种减弱尾水管涡带的水轮机转轮出口导流结构 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE971042C (de) * | 1953-04-17 | 1958-11-27 | Neyrpic Ets | Reaktionswasserturbine |
US3504990A (en) * | 1967-05-09 | 1970-04-07 | David B Sugden | Undulating flow promoting rotor and assemblies embodying same |
US4017211A (en) * | 1975-09-17 | 1977-04-12 | Aktiebolaget Karlstads Mekaniska Werkstad | Runner for hydrodynamic machines |
-
2003
- 2003-10-16 FR FR0312101A patent/FR2861144B1/fr not_active Expired - Fee Related
-
2004
- 2004-10-15 CN CNB2004800300941A patent/CN100443717C/zh not_active Expired - Lifetime
- 2004-10-15 AT AT04791556T patent/ATE392549T1/de active
- 2004-10-15 PT PT04791556T patent/PT1702158E/pt unknown
- 2004-10-15 SI SI200430774T patent/SI1702158T1/sl unknown
- 2004-10-15 EP EP04791556A patent/EP1702158B1/fr not_active Expired - Lifetime
- 2004-10-15 DE DE602004013194T patent/DE602004013194T2/de not_active Expired - Lifetime
- 2004-10-15 BR BRPI0415343A patent/BRPI0415343B1/pt active IP Right Grant
- 2004-10-15 WO PCT/FR2004/002645 patent/WO2005038243A1/fr active IP Right Grant
- 2004-10-15 ES ES04791556T patent/ES2305872T3/es not_active Expired - Lifetime
- 2004-10-15 CA CA2540650A patent/CA2540650C/fr not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE971042C (de) * | 1953-04-17 | 1958-11-27 | Neyrpic Ets | Reaktionswasserturbine |
US3504990A (en) * | 1967-05-09 | 1970-04-07 | David B Sugden | Undulating flow promoting rotor and assemblies embodying same |
US4017211A (en) * | 1975-09-17 | 1977-04-12 | Aktiebolaget Karlstads Mekaniska Werkstad | Runner for hydrodynamic machines |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010094887A1 (fr) | 2009-02-18 | 2010-08-26 | Alstom Hydro France | Installation de conversion d'énergie hydraulique et procédé de commande d'une telle installation |
WO2012017150A1 (fr) | 2010-07-21 | 2012-02-09 | Alstom Hydro France | Roue de turbine francis avec une répartition angulaire des aubes non périodique |
JP2013234621A (ja) * | 2012-05-10 | 2013-11-21 | Toshiba Corp | フランシス水車のランナ、フランシス水車 |
Also Published As
Publication number | Publication date |
---|---|
EP1702158A1 (fr) | 2006-09-20 |
PT1702158E (pt) | 2008-07-25 |
FR2861144A1 (fr) | 2005-04-22 |
CN1867766A (zh) | 2006-11-22 |
ES2305872T3 (es) | 2008-11-01 |
CN100443717C (zh) | 2008-12-17 |
BRPI0415343B1 (pt) | 2015-12-29 |
DE602004013194T2 (de) | 2009-07-02 |
BRPI0415343A (pt) | 2006-12-05 |
EP1702158B1 (fr) | 2008-04-16 |
CA2540650C (fr) | 2013-02-19 |
FR2861144B1 (fr) | 2007-09-21 |
ATE392549T1 (de) | 2008-05-15 |
CA2540650A1 (fr) | 2005-04-28 |
DE602004013194D1 (de) | 2008-05-29 |
SI1702158T1 (sl) | 2008-10-31 |
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