EP3768948A1 - Turbomaschine mit kippbarem gehäuseteil - Google Patents
Turbomaschine mit kippbarem gehäuseteilInfo
- Publication number
- EP3768948A1 EP3768948A1 EP19712528.9A EP19712528A EP3768948A1 EP 3768948 A1 EP3768948 A1 EP 3768948A1 EP 19712528 A EP19712528 A EP 19712528A EP 3768948 A1 EP3768948 A1 EP 3768948A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing part
- turbomachine according
- tiltably mounted
- impeller
- turbomachine
- 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.)
- Withdrawn
Links
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
- F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
- F01D3/04—Machines or engines with axial-thrust balancing effected by working-fluid axial thrust being compensated by thrust-balancing dummy piston or the like
-
- 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
- F01D5/043—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
- F01D5/048—Form or construction
-
- 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
- F01D5/043—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a turbomachine having the features of the preamble of claim 1.
- the turbomachine can be used, for example, in a waste heat recovery system for waste heat utilization of an internal combustion engine.
- German Offenlegungsschrift DE 10 2014 226 951 A1 exemplifies a turbomachine for a waste heat recovery system
- Internal combustion engine comprising a housing and an arranged on a drive shaft impeller.
- the turbomachine has an inflow region and an outflow region and, during operation, flows through a working medium.
- the working medium flows into the inflow region, along a front side formed on the impeller and then out of the
- Outflow area wherein a pressure drop on the front between the inflow and outflow area consists.
- a pressure divider is arranged on a front side opposite the rear side of the impeller.
- the pressure divider leads to a jump in the pressure curve of the pressure acting on the rear side or lowers the pressure, which acts on at least a part of the rear side, with respect to the pressure level of the inflow region. In this way, acting on the impeller resulting hydraulic force can be adjusted.
- the pressure divider can be designed as a throttle, steam-lubricated seal, labyrinth seal or media-tight seal.
- the impeller interacts with the housing of the turbomachine in a gap-forming manner, in particular forming an axial gap. Due to manufacturing and / or assembly tolerances on the one hand can lead to a widening of the axial gap and a concomitant, the efficiency of the turbo engine reducing leakage. On the other hand, manufacturing and / or assembly tolerances can lead to a reduction of the axial gap or even contact of the impeller with the housing part, so that the thrust bearing is exposed to high wear.
- the present invention has for its object to provide a turbomachine in which the aforementioned disadvantages do not occur or at least significantly reduced.
- a turbomachine is to be created, which has a high efficiency and is less prone to wear.
- turbomachine is specified with the features of claim 1.
- Advantageous developments of the invention can be found in the dependent claims.
- a turbomachine with a rotatably mounted about an axis of rotation impeller, the front side of an inflow and a
- the housing part forms a thrust bearing for the impeller.
- the housing part is tiltably mounted relative to a further housing part.
- the tiltable mounting of the axial bearing forming housing part allows compensation of any manufacturing and / or assembly tolerances.
- the axial gap between the impeller and the tiltably mounted housing part can at the same time form a pressure divider according to the cited prior art. In this way, the force acting on the impeller axial force can be reduced. Since the axial gap over the circumference of a
- the axial gap can be minimized to reduce the leakage. This increases the efficiency of the turbomachine.
- the tiltably mounted housing part and the further housing part act together forming a joint.
- the tiltable mounting of the thrust bearing forming the first housing part is therefore effected via the further housing part.
- the structure of the turbomachine can be kept simple in this way. In particular, can be dispensed with additional bearing components.
- the joint preferably comprises at least one spherically and / or conically shaped articular surface, which is arranged centrally with respect to the axis of rotation of the impeller. This means that the axis of rotation is centered by the respective
- a spherically shaped first articular surface is on one
- the pin can be arranged on the tiltably mounted first housing part or on the other housing part.
- the respective other housing part has in this case a spherical or conically shaped second joint surface which is formed in an end-side recess, so that in the recess of the pin can be accommodated.
- a conically shaped second articular surface has the advantage that it has the spherically shaped first articular surface only in an annular
- the tiltably mounted housing part is substantially disc-shaped and / or designed as a rotationally symmetrical body.
- the disk shape reduces the mass of the tiltably mounted housing part and thus facilitates a tilting movement of the housing part. Furthermore, the risk of radial striking and thus blocking the
- tiltable mounted housing part are neglected in relation to the other housing part.
- Housing part is secured against rotation relative to the other housing part. This means that the tiltably mounted housing part and the further housing part directly or indirectly via at least one element for
- the tiltably mounted housing part and the further housing part together define a radial gap.
- Sealing geometry or the sealing element must be designed such that the tilting mobility of the first housing part relative to the other housing part is not affected. If an elastically deformable sealing element is used to seal the radial gap, a restoring force acting on the housing element which is mounted in a tiltably movable manner can be realized at the same time.
- the sealing geometry or the sealing element is arranged on a diameter, which is significantly reduced compared to the outer diameter of the tiltably mounted housing part.
- Diameter may be an outer diameter of the tiltable mounted housing part or an inner diameter of the other
- Sealing element can be arranged both on the tiltably mounted housing part and on the other housing part. About the diameter of the
- Sealing geometry or the sealing element can be set acting on the tiltably mounted housing part pressure conditions.
- the force acting on the tiltably mounted housing part axial force can be opposed to a counter force which is smaller than the axial force. This ensures that the axial force holds the tiltably mounted housing part in contact with the other housing part. At the same time, the axial force can be reduced by the counterforce in order to reduce the load.
- the tiltably mounted housing part is preferably penetrated by a centrally disposed fluid channel.
- the axial gap which is formed between the tiltably mounted housing part and the impeller, with a fluid, for example, with a gas, are acted upon.
- the thrust bearing can be executed in this case as externally pressurized gas bearing.
- the fluid channel preferably extends into the further housing part in order to ensure the fluid supply to the fluid channel. This means that the fluid channel preferably extends over the joint to the tiltably movable mounting of the first housing part.
- the tiltably mounted housing part has at least one leakage return channel, which connects the axial gap directly or indirectly via a circumferential groove widening the axial gap with a rear pressure chamber.
- the leakage return channel may be designed as axially and / or obliquely extending through the housing part channel to establish a connection between the axial gap and the rear pressure chamber.
- the leakage return channel in the region of the joint can open into a recess for receiving a pin.
- the axial bearing be designed as a gas bearing, in particular as an externally pressurized gas bearing. In this embodiment, the advantages of the invention are particularly useful.
- turbomachine Shown is a turbomachine with an about a rotational axis A rotatably mounted impeller 1.
- the representation is the sake of simplicity on the
- the impeller 1 has a front side and a rear side, wherein the
- Front defines an inflow region 2 and an outflow region 3 for a process gas.
- the back is flat and limited
- the axial gap 5 is centrally passing through a housing part 4
- Fluid channel 12 can be acted upon by a fluid, which may be in particular the process gas.
- a fluid which may be in particular the process gas.
- the fluid loading of the axial gap 5 leads to the formation of a gas bearing.
- a leakage return channel 13 is further formed, which extends from a formed in the thrust bearing surface 16 annular groove 14 to a central recess 9 of the housing part 4.
- Recess 9 is a connection of the leakage return passage 13 made with a rear pressure chamber 15, which serves as a leakage collecting space.
- the housing part 4 is mounted tiltably.
- the tiltable storage is over reaches a further housing part 6, which cooperates with the first housing part 4 forming a hinge 7.
- the further housing part 6 has for this purpose a pin 8 which engages in the recess 9 of the tiltably mounted housing part 4 and at its free end has a spherical shaped joint surface 7.1.
- a conically shaped joint surface 7.2 is formed, via which the first housing part 4 is supported on the pin 8.
- the two joint surfaces 7.1, 7.2 together form an annular sealing contact, which separates the fluid channel 12 from the leakage return channel 13. This ensures that there is a supply pressure pi in the fluid channel which is greater than a return pressure p 2 prevailing in the pressure chamber 15 and the axial gap 5 is supplied with gas as loss-free as possible.
- Sealing geometry 11 effects a seal in the region of a radial gap 10 formed between the two housing parts 4, 5.
- the sealing geometry 11 is designed such that it permits a tilting movement of the housing part 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018204289.6A DE102018204289A1 (de) | 2018-03-21 | 2018-03-21 | Turbomaschine |
PCT/EP2019/056240 WO2019179843A1 (de) | 2018-03-21 | 2019-03-13 | Turbomaschine mit kippbarem gehäuseteil |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3768948A1 true EP3768948A1 (de) | 2021-01-27 |
Family
ID=65861252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19712528.9A Withdrawn EP3768948A1 (de) | 2018-03-21 | 2019-03-13 | Turbomaschine mit kippbarem gehäuseteil |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3768948A1 (de) |
JP (1) | JP7058752B2 (de) |
CN (1) | CN111886400B (de) |
DE (1) | DE102018204289A1 (de) |
WO (1) | WO2019179843A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10003018B4 (de) * | 2000-01-25 | 2009-09-24 | Atlas Copco Energas Gmbh | Turboverdichter |
US7997802B2 (en) * | 2003-05-13 | 2011-08-16 | Carl Freudenberg Kg | Axial plain bearing assembly |
DE102006049516B3 (de) | 2006-10-20 | 2008-01-03 | Atlas Copco Energas Gmbh | Turbomaschine |
DE102010034766B4 (de) * | 2010-08-18 | 2014-02-27 | Pierburg Gmbh | Lageranordnung für die Verdichterseite eines Turboladers einer Verbrennungskraftmaschine |
JP2013221454A (ja) * | 2012-04-17 | 2013-10-28 | Ihi Corp | 遠心圧縮機 |
DE102014226951A1 (de) | 2014-12-23 | 2016-06-23 | Robert Bosch Gmbh | Turbomaschine |
US10900367B2 (en) * | 2016-02-24 | 2021-01-26 | Borgwarner Inc. | Sealing unit for turbocharger |
DE102016210782A1 (de) * | 2016-06-16 | 2017-12-21 | Robert Bosch Gmbh | Turbine |
-
2018
- 2018-03-21 DE DE102018204289.6A patent/DE102018204289A1/de active Pending
-
2019
- 2019-03-13 WO PCT/EP2019/056240 patent/WO2019179843A1/de unknown
- 2019-03-13 CN CN201980020705.0A patent/CN111886400B/zh active Active
- 2019-03-13 JP JP2020548905A patent/JP7058752B2/ja active Active
- 2019-03-13 EP EP19712528.9A patent/EP3768948A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JP2021516743A (ja) | 2021-07-08 |
JP7058752B2 (ja) | 2022-04-22 |
DE102018204289A1 (de) | 2019-09-26 |
CN111886400B (zh) | 2023-03-14 |
WO2019179843A1 (de) | 2019-09-26 |
CN111886400A (zh) | 2020-11-03 |
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