EP3542067A1 - Turbomaschine - Google Patents
TurbomaschineInfo
- Publication number
- EP3542067A1 EP3542067A1 EP17800714.2A EP17800714A EP3542067A1 EP 3542067 A1 EP3542067 A1 EP 3542067A1 EP 17800714 A EP17800714 A EP 17800714A EP 3542067 A1 EP3542067 A1 EP 3542067A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- radial bearing
- rbp
- overhang
- radial
- 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
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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- 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
- F04D1/12—Pumps with scoops or like paring members protruding in the fluid circulating in a bowl
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/047—Bearings hydrostatic; hydrodynamic
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/057—Bearings hydrostatic; hydrodynamic
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of 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
- F04D5/00—Pumps with circumferential or transverse flow
Definitions
- the invention relates to a turbomachine, in particular tur ⁇ bo compressor, comprising a rotor which is at least partially disposed in a housing and extending along a Rota ⁇ tion axis, wherein the turbomachine has at least one radial bearing, in which the rotor at a radial bearing point is radially mounted, wherein the radial bearing is formed as an oil-lubricated slide bearing, wherein the rotor in the axial region of the radial bearing point has a ring in a circumferential direction in the outer 20% of the diameter of the radial bearing point of the rotor located Hohlkam- mer, which between a radial inside core region of the rotor in the region of the radial bearing point and the radially outer region of the rotor in the region of the radial bearing point thermally insulated.
- a rotor shaft for turbo ⁇ machines is already known from EP 983 448 Bl, in which a thermally insulating hollow
- radial, axial, tangential or circumferential direction are each related to the axis of the rotor, unless otherwise indicated.
- the radial bearing according to the invention can also be designed as a combined radial thrust bearing and serves in any case to support static and dynamic radial bearing forces. Since, according to the invention, a first shaft end of the rotor protrudes from the axial center of the radial bearing point beyond an overhang beyond the radial bearing point, a first Quo ⁇ tient of overhang to an overall length of the rotor
- core region of the rotor refers to the region which extends radially inward from the hollow chamber according to the invention for thermal
- the core area here is the essential part of the rotor in the area of the radial bearing for the absorption of static and dynamic forces.
- the Hollow chamber in the region of the radial bearing weakens the rotor cross-section, so that the essential strength properties are determined by the core region.
- a preferred embodiment of the hollow chamber is that a sleeve in the region of the radial bearing point is applied to the rotor, which defines the hollow chamber radially outward with a radially inwardly ⁇ sensitive surface.
- This sleeve may have a recess on the radially inner surface and / or be positioned over a corresponding recess on the rotor in the region of the radial bearing position, so that the hollow chamber extends radially into the region of the sleeve and / or the core region of the rotor radially decimated.
- a key finding of the invention is to be ⁇ establishes that a turbomachine should be particularly advantageously equipped with such a thermal insulation in the region of the radial bearing location when a first shaft end of the rotor of the axial center of the radial bearing location from an overhang on the radial bearing location toward ⁇ protrudes, wherein a first quotient of this axial overhang to a total length of the rotor is greater than 0.15.
- This formulation assumes that the main mass of the rotor is arranged on one side of the radial bearing point and on the axially opposite side of the radial bearing point an overhang protrudes beyond the radial bearing point.
- TLE total length (unit of length, eg mm).
- TMS total mass (in kg).
- a further advantageous development of the invention provides that the radial bearing is designed such that ei ⁇ ne static bearing pressure is greater than 6bar. It has been found that such an arrangement is particularly prone to the Ausbil ⁇ dung of Morten effect.
- Particularly expedient is the equipment of a turbomachine with the defined thermal insulation when the arrangement of rotor and radial bearing has a relative eccentricity of at least 0.1.
- RAB radius of the bearing based on the Gleitflä ⁇ chen (averaged over the axial)
- a further advantageous refinement provides that the turbomachine for a nominal operating state with a To ⁇ peripheral speed> 60m / s at the outermost circumference of the Lagerzap ⁇ fens is formed (portion of the shaft or of the rotor in the range of Ra ⁇ diallagers).
- the rated operating state refers to the presence of those operating parameters of the machine with which the operation takes place most of the time.
- the invention is used when the protruding first end of the shaft has a coupling, where ⁇ in the mass of the clutch is at least 2% of the total mass of the rotor. For such an arrangement, a measure against the Morten effect is extremely expedient.
- the use of the invention when the weight of the overhang mass at least 12% of the bearing load of the radial bearing amounts. Furthermore, the use of the He ⁇ invention particularly useful when the overhang has a center of mass, which as is closer to the axial end of the Ro ⁇ tors at the axial center of the radial bearing.
- the use of the invention is particularly useful if the rotor is designed for nominal operation such that at rated speed an imbalance centrifugal force of the overhang at 1 ° bend at the radial bearing is at least 60% of the static bearing force in the radial bearing.
- a radial height of the hollow chamber is less than 10%, preferably less than 5% of the rotor diameter at the radial bearing position ⁇ tion.
- FIG. 1 is a schematic highly simplified representation of a turbocompressor according to the invention
- FIG. 2 a schematic representation of a hollow chamber according to the invention in longitudinal section
- Figure 3 is a schematic representation of an inventive ⁇ SEN turbomachine with a bend of 1% in the range of the radial bearing of the rotor.
- Figure 4 is a schematic representation of the geometric relationships at the radial bearing point in an Axi ⁇ al bain.
- 1 shows a schematic representation of a turbomachine Invention ⁇ proper, namely a turbocompressor TCO.
- ⁇ proper namely a turbocompressor TCO.
- the rotor R in this example carries three rotating impellers, namely a first impeller IMP1, a second impeller IMP2 and a third impeller IMP3.
- the rotor R extends along a rotor axis X and is supported radially by means of two radial bearings RB.
- the left to ⁇ ordered radial bearing RB is designed as a fixed bearing and accordingly has a connected thrust bearing, which is not shown in further detail.
- This radial bearing supports the rotor R between a first shaft end RN1 and the rest of the rotor R.
- the right disposed radial bearing RB divides the rotor by means of this radial bearing location in a two ⁇ tes shaft end RN2 and the rest of the rotor R.
- the radial bearing location RBP of the left- Radial bearing RB is ⁇ arranged on the right side of the first impeller IMPL, so that the first impeller IMPl is formed as an overhang and accordingly as Be ⁇ part of an overhang OVH of the rotor R.
- a clutch CP for coupling to other rotary machines, such as a drive.
- a coupling CP ⁇ (here optionally executed) may also be provided on the second shaft end RN2.
- the rotor R has the total length TLE and the overhang OVH has an overhang length OVL.
- the overhang OVH furthermore has an overhang mass OVM that the ro tors ⁇ R in a specific ratio of the total mass TMS.
- OVM overhang mass
- the outermost circumference CMX of the rotor R, at which the maximum peripheral speed RSP in the circumferential direction CDR results in a nominal operation, is likewise schematically indicated at the first impeller IMP1. 2 shows details of the formation of a thermally insulating cavity at the radial bearing location RBP of lin ⁇ ken radial bearing RB in the figure 1.
- the hollow cavity CAV is formed here by a sleeve SLV, which up to the first shaft end RN1 in the region of the radial bearing location RBP ⁇ is shrinking. Between two shrink seats of the sleeve SLV is located axially on the radial inner side of the sleeve SLV a radial recess with the radial height RH.
- the rotor R In the area of the radial bearing RBP, the rotor R has a rotor diameter RDM, wherein the radial height RHT of the hollow chamber is less than 10%, preferably less than 5% of the rotor diameter RDM. In this way, the desired thermal insulation ⁇ effect is achieved.
- Figure 3 schematically shows a bend of the first shaft end RN1 by an angle in the region of the radial bearing Stel ⁇ le RBP so that the center of gravity MSPOV of the overhang OV to distinguish (by the gravity MSP of the entire rotor R and the eccentricity EXT of the center of gravity of MSP to the rotor axis X) eccentrically displaced by an eccentricity EXT2.
- a centrifugal force CFF results on ⁇ due to the resultant imbalance.
- the radial bearing RB is designed such that a stati ⁇ cal bearing pressure SBP> 6bar.
- the turbomachine is designed for a nominal operating state with a peripheral speed RSP RSP> 60 m / s at the outermost order ⁇ CMX of the rotor R.
- the radial bearing RB is designed for isentropic storage.
- the protruding first shaft end RN1 has a clutch CP, wherein the mass of the clutch CP is at least 2% of the total mass TMS of the rotor ⁇ R.
- the weight of the overhang mass OVM is at least 12% of the bearing load BLO of the radial bearing RB.
- the overhang has a center of mass, with the center of gravity of the overhang being closer to the axial end of the rotor R than the axial center of the radial bearing RB.
- the rotor R is designed for rated operation such that at rated speed NN an unbalance centrifugal force of the overhang at 1 ° bend at the radial bearing RB is at least 60% of the static bearing force in the radial bearing RB.
- a radial height of the hollow chamber RHT CAV is less than 10%, preferably less than 5% of Rotor diemes ⁇ sers RDM at the radial bearing position RBP.
- the bearing RB has a relative eccentricity EXT of EXT ⁇ 0, 1.
- Figure 4 shows a schematic axial sectional view of the rotor R and the shaft of the rotor R in the region of the left axial bearing RB.
- the rotor R is shown in FIG. 4 in a rotation ROT relative to the stationary radial bearing RB.
- the rotor R extends axially in the direction of the rotor axis X.
- the radial bearing RB has a radial center ⁇ ⁇ .
- the illustration of Figure 4 shows a specific axial section representing geometric parameters which are averaged over the length of the radial bearing RB in the axial direction.
- the radial bearing RB has a radial bearing radius RAB with respect to the inner surface of the sliding surfaces.
- the rotor R has a radius RAJ.
- the radius of the rotor RAJ is made smaller than the radius of the bearing RAB.
- the rotor R is positioned in the radial bearing RB in a certain radial position.
- the axis of rotation X and the radial center ⁇ ⁇ of the radial bearing RB are located on an axis of the axes LOC.
- Zvi ⁇ rule the surface of the rotor R and the sliding surface of the Ra ⁇ diallagers RB.
- the minimum radial clearance HMIN is also referred to here as OFT.
- the radial clearance is be- see the surface of the rotor R and the sliding surface of the Ra ⁇ diallagers as RB denotes H with a function of circumferential position AAG (which is here indicated as angle).
- the distance between the rotor axis X and the radial center ⁇ ⁇ of the radial bearing RB is the eccentricity E. This is calculated in combination with the theoretical radial play
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016222786.6A DE102016222786A1 (de) | 2016-11-18 | 2016-11-18 | Turbomaschine |
| PCT/EP2017/077483 WO2018091250A1 (de) | 2016-11-18 | 2017-10-26 | Turbomaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3542067A1 true EP3542067A1 (de) | 2019-09-25 |
| EP3542067B1 EP3542067B1 (de) | 2020-10-14 |
Family
ID=60387979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17800714.2A Active EP3542067B1 (de) | 2016-11-18 | 2017-10-26 | Turbomaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10837454B2 (de) |
| EP (1) | EP3542067B1 (de) |
| JP (1) | JP6918108B2 (de) |
| CN (1) | CN109983234B (de) |
| DE (1) | DE102016222786A1 (de) |
| WO (1) | WO2018091250A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018106944A1 (de) * | 2018-03-23 | 2019-09-26 | Man Energy Solutions Se | Turboverdichter |
| CN109519414B (zh) * | 2018-11-16 | 2024-02-23 | 珠海格力电器股份有限公司 | 离心压缩机、转子结构及其重心调节方法 |
| CN109915999B (zh) | 2019-03-13 | 2020-11-06 | 珠海格力电器股份有限公司 | 基于结霜图普的空调抑霜方法及装置 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885963A (en) * | 1953-12-11 | 1959-05-12 | Hayward Tyler And Company Ltd | Structures comprising a motor and a pump driven thereby |
| DE1528754A1 (de) * | 1966-07-16 | 1970-10-08 | Licentia Gmbh | Elektromotorisch angetriebene Pumpe |
| JPS5931095U (ja) | 1982-08-23 | 1984-02-27 | 株式会社日立製作所 | 原子炉格納容器圧力抑制室底部堆積物撹拌装置 |
| DE3334786A1 (de) | 1982-12-24 | 1984-07-05 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Kreiselpumpe |
| JPS60143927U (ja) | 1984-03-02 | 1985-09-24 | 株式会社安川電機 | 軸受支持装置 |
| US5455778A (en) * | 1987-05-29 | 1995-10-03 | Ide; Russell D. | Bearing design analysis apparatus and method |
| US4971459A (en) | 1990-03-23 | 1990-11-20 | Ingersoll-Rand Company | Journal bearing with high stiffness |
| NL1006177C2 (nl) | 1997-05-30 | 1998-12-07 | Delaval Stork V O F | Rotoras voor een roterende machine en roterende machine voorzien van een dergelijke rotoras. |
| JP2007177808A (ja) * | 2005-12-27 | 2007-07-12 | Hitachi Powdered Metals Co Ltd | 動圧軸受ユニット |
| US8092158B2 (en) | 2007-08-16 | 2012-01-10 | Johnson Controls Technology Company | Method of positioning seals in turbomachinery utilizing electromagnetic bearings |
| ITFI20130092A1 (it) * | 2013-04-24 | 2014-10-25 | Nuovo Pignone Srl | "rotating machinery with adaptive bearing journals and methods of operating" |
-
2016
- 2016-11-18 DE DE102016222786.6A patent/DE102016222786A1/de not_active Withdrawn
-
2017
- 2017-10-26 WO PCT/EP2017/077483 patent/WO2018091250A1/de not_active Ceased
- 2017-10-26 EP EP17800714.2A patent/EP3542067B1/de active Active
- 2017-10-26 CN CN201780071658.3A patent/CN109983234B/zh active Active
- 2017-10-26 US US16/349,272 patent/US10837454B2/en active Active
- 2017-10-26 JP JP2019526532A patent/JP6918108B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019535952A (ja) | 2019-12-12 |
| CN109983234A (zh) | 2019-07-05 |
| WO2018091250A1 (de) | 2018-05-24 |
| CN109983234B (zh) | 2021-03-09 |
| DE102016222786A1 (de) | 2018-05-24 |
| EP3542067B1 (de) | 2020-10-14 |
| US20190264691A1 (en) | 2019-08-29 |
| US10837454B2 (en) | 2020-11-17 |
| JP6918108B2 (ja) | 2021-08-11 |
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