EP2470795A1 - Turbine engine casing having a reinforced seal - Google Patents
Turbine engine casing having a reinforced sealInfo
- Publication number
- EP2470795A1 EP2470795A1 EP10752062A EP10752062A EP2470795A1 EP 2470795 A1 EP2470795 A1 EP 2470795A1 EP 10752062 A EP10752062 A EP 10752062A EP 10752062 A EP10752062 A EP 10752062A EP 2470795 A1 EP2470795 A1 EP 2470795A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- annular
- flange
- rib
- axial ribs
- casing according
- 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
- 238000005728 strengthening Methods 0.000 abstract 1
- 230000000295 complement effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
-
- 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
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/39—Retaining components in desired mutual position by a V-shaped ring to join the flanges of two cylindrical sections, e.g. casing sections of a turbocharger
Definitions
- the invention relates to a turbomachine casing inside which high fluid pressures are involved, such as a centrifugal pump casing or turbine.
- the invention makes it possible at the same time to reduce the deformations and mechanical stresses on the housing, to facilitate its construction and its assembly and to improve the tightness, in use.
- a casing of the type which the invention aims to improve which comprises a body essentially obtained by molding, in which is defined a cavity housing the centrifugal stage of the rotor and which is shaped to define an outlet volute, more particularly a recumbent volute.
- the housing body has two annular portions of different diameters. The smaller diameter portion is provided to house a portion of the rotor. The larger diameter portion houses a centrifugal wheel and is provided with an annular fixing flange for bolting to another complementary housing.
- axial ribs that is to say stiffeners extending parallel to the axis
- These axial molded ribs can have a certain height in the radial direction, which gives the body of the casing the desired rigidity.
- the flange allows the centering of the two housings and the insertion between them of a seal ensuring the external sealing.
- the axial ribs make it possible to limit the deformations of the casing without increasing the wall thicknesses.
- the axial ribs also make it possible to limit the deformations of the spoiler, that is to say the connection of internal material between the portions of small diameter and large volute diameter. This spoiler area is highly stressed because it absorbs the deformations of the output volute due to the effects of pressure. The axial ribs therefore reduce the level of stress in the spoiler.
- the deformations of the casing are relatively limited and the stresses in the spoiler separating the outlet of the diffuser from the volute are relatively contained.
- your ribs originating on the flange limit the number of bolts and make more complex the manufacture of said flange. This can pose a pump housing leakage problem due to insufficient number of bolts.
- the casing tends to inflate under the effect of pressure and urges the flange by tending to pivot on its support, which can promote external leakage, loss of centering or even breakage of bolts.
- the invention makes it possible to preserve the advantages of the relatively high axial ribs ensuring a good overall rigidity of the casing while ensuring a decoupling of the flange.
- the invention relates to a turbomachine casing of the type comprising a body reinforced externally by axial ribs evenly spaced circularly and extending in abutment between two annular portions of different diameters, the portion of larger diameter being provided with an annular fixing flange, characterized in that, on the side of the annular portion of greater diameter, the ends of the axial ribs are connected to an annular rib and in that this rib is attached to said fixing flange by a portion annular wall thinner than said rib and said flange.
- the configuration and attachment of the axial ribs result from the molding of the housing.
- a relatively thin annular zone is created in the vicinity of the flange. This area is therefore more flexible, all things being equal and will therefore deform under the effect of pressure to absorb the movements between the flange and the rest of the housing more rigid due to the presence of axial ribs.
- said rib is defined in the radial external extension of an internal volute spoiler.
- said thinner annular wall portion is defined outside a diffuser outlet.
- said axial ribs straddle the outer wall of a lying volute. They are continuously attached to the outer wall of the housing, including the volute.
- FIG. 1 is an external perspective view of a casing according to the invention.
- FIG. 2 is a half section of the same casing in a plane passing through the axis of rotation X,
- centrifugal pump casing comprising a molded metal body 12 having externally molded axial ribs 14, circumferentially spaced regularly and extending in abutment between two annular portions of different diameters 16, 20
- the larger diameter portion 16 has a recumbent volute 17 terminating at a tangential outlet 18 through which the pressurized fluid is discharged and an annular attachment flange 19.
- FIG. 2 the housing is shown hatched and part of a complementary housing 22 is shown in fine lines, assembled to the flange 19 by bolts 23.
- the annular portion 16 of larger diameter, the ends of the axial ribs are integrally molded to an annular rib 25 protruding outwardly and this rib is attached to the molding said fixing flange 19 by a substantially cylindrical annular wall portion 27.
- This annular wall portion is thinner than the rib 25 and thinner than the flange 19, as can be seen in FIG. 2.
- the flange 19 is provided with a number of holes 29 regularly spaced circularly.
- the housing is adapted to be bolted to the complementary housing 22 by this flange, each hole receiving a bolt 23. A seal is inserted between the flange and that of the complementary housing.
- the rib 25 is defined in the radial external extension of an internal spoiler 26 separating the volute 17 from the diffuser outlet 29.
- the spoiler absorbs the deformations of the volute due to the effects of pressure. It is therefore a very solicited part.
- the presence of the rib 25 strengthens this area.
- the thinner annular wall portion 27 is defined radially outside the diffuser outlet 29.
- the axial ribs 14 which span the outer wall of the lying volute 17 are molded to the housing, between the outer wall of the cylindrical portion 21 of said portion of smaller diameter and the annular rib 25.
- the portion the casing reinforced by the axial ribs is therefore extremely rigid and, according to the invention, this part is decoupled from the flange 19 by the annular wall portion 27.
- this portion which tends to bend under the effect of the internal pressure by preventing the deformations from affecting the flange itself.
- the embodiment of the flange 19 is simplified and the number of axial ribs 14 does not limit the number of holes 29 that it is possible and desirable to practice in the flange to achieve the desired tightening of the seal.
- this concept can be transposed to a turbine casing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0955778A FR2949517B1 (en) | 2009-08-25 | 2009-08-25 | TURBOMACHINE HOUSING WITH REINFORCED SEALING |
PCT/FR2010/051536 WO2011023873A1 (en) | 2009-08-25 | 2010-07-21 | Turbine engine casing having a reinforced seal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2470795A1 true EP2470795A1 (en) | 2012-07-04 |
EP2470795B1 EP2470795B1 (en) | 2016-11-30 |
Family
ID=41820276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10752062.9A Active EP2470795B1 (en) | 2009-08-25 | 2010-07-21 | Turbine engine casing having a reinforced seal |
Country Status (7)
Country | Link |
---|---|
US (1) | US9086077B2 (en) |
EP (1) | EP2470795B1 (en) |
JP (1) | JP5536214B2 (en) |
CN (1) | CN102639878A (en) |
FR (1) | FR2949517B1 (en) |
RU (1) | RU2530953C2 (en) |
WO (1) | WO2011023873A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2008180C2 (en) | 2012-01-25 | 2013-07-29 | Ihc Holland Ie Bv | Pump and a method of manufacturing such a pump. |
US9498850B2 (en) | 2012-03-27 | 2016-11-22 | Pratt & Whitney Canada Corp. | Structural case for aircraft gas turbine engine |
EP2713058B1 (en) * | 2012-09-26 | 2016-11-30 | Pierburg Pump Technology GmbH | Pump head for a centrifugal pump and method for producing such a pump head |
JP6184728B2 (en) * | 2013-04-16 | 2017-08-23 | 株式会社日立製作所 | Double suction centrifugal pump |
US10661906B2 (en) | 2014-09-23 | 2020-05-26 | Hamilton Sundstrand Corporation | Fan and compressor housing for an air cycle machine |
JP6369684B2 (en) * | 2014-10-10 | 2018-08-08 | 株式会社富士通ゼネラル | Embedded ceiling air conditioner |
US9915267B2 (en) * | 2015-06-08 | 2018-03-13 | Air Distribution Technologies Ip, Llc | Fan inlet recirculation guide vanes |
DK3165776T3 (en) | 2015-11-03 | 2020-06-29 | Howden Turbo Gmbh | Turbo compressor with stiffening ribs |
CN106968984B (en) * | 2015-12-11 | 2020-10-23 | 松下知识产权经营株式会社 | Turbine engine |
US10087946B2 (en) * | 2016-02-09 | 2018-10-02 | Brunswick Corporation | Centrifugal pumps having anti-air-locking features |
US10619650B2 (en) | 2016-05-06 | 2020-04-14 | Hamilton Sundstrand Corporation | Air cycle machine fan and compressor housing |
RU2629307C1 (en) | 2016-09-27 | 2017-08-28 | Общество с ограниченной ответственностью "Нефтекамский машиностроительный завод" (ООО "НКМЗ") | Main line pump |
CN107701512A (en) * | 2017-10-18 | 2018-02-16 | 珠海格力电器股份有限公司 | Volute, compressor and air conditioner |
US10788046B2 (en) * | 2018-01-05 | 2020-09-29 | Hamilton Sundstrand Corporation | Fan and compressor housing for an air cycle machine |
JP2019157701A (en) * | 2018-03-09 | 2019-09-19 | 日本電産サンキョー株式会社 | pump |
WO2023234927A1 (en) * | 2022-05-31 | 2023-12-07 | Itt Goulds Pumps, Inc. | Pump casing |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1279121A (en) * | 1961-02-09 | 1961-12-15 | Brown | Hermetically sealed and pressure resistant electric motor |
FR2789529B1 (en) * | 1999-02-05 | 2001-06-08 | Valeo Systemes Dessuyage | IMPROVEMENTS TO DIRECT CURRENT ELECTRIC MOTORS, IN PARTICULAR FOR MOTOR VEHICLE ACTUATORS |
RU2176751C1 (en) * | 2000-06-15 | 2001-12-10 | Носов Анатолий Александрович | Liquid pump casing |
AT413427B (en) * | 2004-03-01 | 2006-02-15 | Vogel Pumpen | ROD HOUSING OF A PUMP LEVEL |
AU2006308435B2 (en) | 2005-10-28 | 2013-02-14 | Resmed Motor Technologies Inc. | Single or multiple stage blower and nested volute(s) and/or impeller(s) therefor |
RU2309296C1 (en) * | 2006-04-10 | 2007-10-27 | Государственное образовательное учреждение высшего профессионального образования "Орловский государственный технический университет" (ОрелГТУ) | Electric pump |
DE102007009781B4 (en) * | 2007-02-27 | 2009-09-17 | Woco Industrietechnik Gmbh | Plastic compressor housing and method for its production |
DE102007027282B3 (en) * | 2007-06-11 | 2008-11-13 | Woco Industrietechnik Gmbh | Plastic compressor housing and method for producing a plastic compressor housing |
-
2009
- 2009-08-25 FR FR0955778A patent/FR2949517B1/en active Active
-
2010
- 2010-07-21 JP JP2012526093A patent/JP5536214B2/en not_active Expired - Fee Related
- 2010-07-21 EP EP10752062.9A patent/EP2470795B1/en active Active
- 2010-07-21 RU RU2012108484/06A patent/RU2530953C2/en not_active IP Right Cessation
- 2010-07-21 US US13/391,977 patent/US9086077B2/en not_active Expired - Fee Related
- 2010-07-21 CN CN2010800380814A patent/CN102639878A/en active Pending
- 2010-07-21 WO PCT/FR2010/051536 patent/WO2011023873A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011023873A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2949517B1 (en) | 2011-10-21 |
JP5536214B2 (en) | 2014-07-02 |
JP2013503291A (en) | 2013-01-31 |
CN102639878A (en) | 2012-08-15 |
RU2012108484A (en) | 2013-10-10 |
US9086077B2 (en) | 2015-07-21 |
FR2949517A1 (en) | 2011-03-04 |
WO2011023873A1 (en) | 2011-03-03 |
EP2470795B1 (en) | 2016-11-30 |
RU2530953C2 (en) | 2014-10-20 |
US20120230816A1 (en) | 2012-09-13 |
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