US20120243986A1 - Turbo machine - Google Patents

Turbo machine Download PDF

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Publication number
US20120243986A1
US20120243986A1 US13/417,507 US201213417507A US2012243986A1 US 20120243986 A1 US20120243986 A1 US 20120243986A1 US 201213417507 A US201213417507 A US 201213417507A US 2012243986 A1 US2012243986 A1 US 2012243986A1
Authority
US
United States
Prior art keywords
impeller wheel
shaft
rotor
bearing
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.)
Abandoned
Application number
US13/417,507
Other languages
English (en)
Inventor
Frank WIEBE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlas Copco Energas GmbH
Original Assignee
Atlas Copco Energas GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atlas Copco Energas GmbH filed Critical Atlas Copco Energas GmbH
Assigned to ATLAS COPCO ENERGAS GMBH reassignment ATLAS COPCO ENERGAS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Wiebe, Frank
Publication of US20120243986A1 publication Critical patent/US20120243986A1/en
Priority to US14/746,871 priority Critical patent/US9670792B2/en
Abandoned legal-status Critical Current

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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
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/06—Arrangements of bearings; Lubricating
    • 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
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • 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
    • F05D2220/00—Application
    • F05D2220/70—Application in combination with
    • F05D2220/76—Application in combination with an electrical generator
    • 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
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • F05D2240/51—Magnetic
    • 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
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • F05D2240/52—Axial thrust bearings
    • 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
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • F05D2240/54—Radial bearings
    • 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
    • F05D2260/34—Balancing of radial or axial forces on regenerative rotors

Definitions

  • the present invention relates to a turbomachine. More particularly this invention concerns a turbomachine two axially spaced but jointly rotatable impeller wheels.
  • a turbomachine having at least one first and one second impeller wheel whose back faces confront each other, a rotor shaft carrying both of the radial impeller wheels, and a bearing system. Adjacent each of the radial-blade impeller wheels is an axial bearing with one respective rotor bearing half and one respective stator bearing half. The rotor bearing halves are each formed on the back face of the respective radial impeller wheel.
  • axial bearing surfaces are customarily used that are either formed directly on the shaft, or fixed by an additional axial bearing washer to the shaft.
  • turbomachines having an axial magnetically mounted rotor shaft are known in which the magnetic bearing halves for axial bearing are on an axial bearing washer, or on opposed shaft shoulders shrunk onto the rotor shaft.
  • EP 2 017 435 A2 describes a design having the features cited above for a turbomachine having as short a rotor as possible, and a rotor mass that is as small as possible. Because the rotor bearing halves are formed on the back faces of the radial impeller wheels, the space taken up by the axial bearing can be reduced significantly, the axial bearing halves being integrated into a housing wall and also integrated into the rear side of the radial impeller wheels, which must also be present independent of the bearing. The number of separate components is thereby reduced.
  • the design known from EP 2 017 435 A2 is substantially symmetrical starting at an electric machine located centrally of the rotor between the two radial impeller wheels.
  • Another object is the provision of such an improved turbomachine that overcomes the above-given disadvantages, in particular that is simple to assemble and disassemble as well as to maintain.
  • a turbomachine has according to the invention a shaft extending along and rotatable relative to a support about an axis and having an outer surface.
  • a first impeller wheel permanently mounted on the shaft has a respective back face.
  • the outer surface of the shaft is formed with steps of increasingly small diameter away from the first wheel.
  • a second impeller wheel detachably mounted on a respective one of the steps of the shaft axially offset from the first impeller wheel has a respective back face axially confronting the back face of the first impeller wheel.
  • Respective first and second axial magnetic bearings each have a respective annular rotor bearing half fixed to the respective impeller wheel and a respective one-piece nonrotatable annular stator bearing half axially juxtaposed with the respective rotor bearing half, axially spacedly traversed by the shaft, and carried on the support.
  • a radial bearing mounted on the rotor shaft between the axial bearings has an inner rotor ring carried on a respective one of the steps and an outer stator ring carried on the support.
  • an asymmetric design is provided, and the first impeller wheel is mounted fixedly and nonremovably on the rotor shaft.
  • the first radial impeller wheel cannot be separated from the rotor shaft, or can be separated from the rotor shaft only upon the exertion of a very large force or by taking special steps.
  • the further components i.e. at least the stator bearing halves and finally the second radial impeller wheel are installed sequentially.
  • the individual steps of the shaft outer surface have outer diameters adapted to the inner diameters of the respective components to be mounted thereon.
  • the individual components can easily be pushed up to the section at which they are to be mounted.
  • the removable design of the second radial impeller wheel depending on the design—disassembly or at least maintenance of the described components is possible.
  • the components of the axial bearings are accessible starting from the second radial impeller wheel.
  • stator bearing halves are pushed onto the rotor shaft from one end during assembly, separation into two half shells or segments is not required, as a result of which stability and impermeability are improved and production expense is also reduced.
  • magnetic windings of one of the halves of each bearing generate a magnetic field affecting the other bearing half, preferably controllable as needed.
  • the magnetic windings are in the fixed stator bearing halves.
  • the rotor bearing halves must consist of a suitable material that magnetically interacts with the coils, or be covered with permanent magnets.
  • the material used for impeller wheels is not suited for forming rotor bearing halves of a magnetic bearing.
  • at least one of the radial impeller wheels can be formed by an impeller wheel body that includes a blade system and a disk consisting of a different material, e.g. an aluminum alloy, fastened at the rear side of the impeller wheel body, the disk forming the rotor bearing half of the corresponding axial bearing.
  • a disk or such a ring with a central opening for the rotor shaft can, for example, be welded onto the impeller wheel body.
  • connection by friction welding can be provided.
  • a suitable material for example, permanent magnets or a magnetizable material in the form of segments on the rear side of the radial impeller wheels, in particular to insert them into corresponding recesses.
  • the assembly and the optionally provided disassembly from one end permits, within the scope of the invention, that the first radial impeller wheel with further machine components is also mounted fixedly in a main housing.
  • the rotor shaft extends out of the main housing, as a result of which the second radial impeller wheel is correspondingly located outside the main housing.
  • the turbomachine having at least two radial impeller wheels whose back faces confront each other can serve as a compressor, expander or compander. While with a compressor having two compressor impeller wheels a drive, in particular by an electric machine, is to be provided, in the case of an expander having two impeller wheels, the energy that is being released can be recovered and used by an electric machine in the form of a generator. In the case of a compander having a compressor impeller wheel and an expander impeller wheel, an electric machine is only optionally provided, and it can be operated as a generator or as a motor depending on application.
  • the two radial impeller wheels are mounted overhung at respective ends of the rotor shaft.
  • the rotor shaft extends beyond this radial impeller wheel, and still at least one further device can be mounted on the rotor shaft, for example, a further radial impeller wheel.
  • FIG. 1 shows components of a turbomachine according to the invention
  • FIG. 2 shows the system according to FIG. 1 attached to a main housing.
  • a turbomachine As seen in FIG. 1 a turbomachine according to the invention has a first impeller wheel 1 and a second impeller wheel 2 with respective back faces 3 a and 3 b turned axially relative to an axis A toward each other in a so-called back-to-back arrangement.
  • the two wheels 1 and 2 are carried by and rotationally fixed to a common axially centered rotor shaft 4 mounted on a bearing system that in turn is carried on a fixed support indicated schematically at 17 and constituted by a machine housing.
  • the bearing system includes respective axial bearings 5 a and 5 b each having a rotor bearing half 6 a or 6 b and a stator bearing half 7 a or 7 b .
  • the rotor bearing halves 6 a and 6 b are formed on back faces 3 a and 3 b of the respective assigned radial impeller wheels 1 and 2 .
  • the stator halves 7 a and 7 b are carried on the fixed support 17 .
  • the first radial impeller wheel 1 is permanently mounted on to the rotor shaft 4 , for example by shrinking on, while the second radial impeller wheel 2 can be detached from the shaft 4 .
  • the two stator bearing halves 7 a and 7 b and then the second radial impeller wheel 2 can be pushed in sequence onto the rotor shaft 4 to which the wheel 1 has already been fixed.
  • the rotor shaft 4 decreases in cross-sectional size or diameter from the first radial impeller wheel 1 toward the second impeller wheel 2 . Disassembly of the rotor system is also possible in reverse order.
  • FIG. 1 further shows that the stator bearing halves 7 a and 7 b each have a respective one-piece support 8 having an axially centered and throughgoing hole for the rotor shaft 4 and an electromagnetic winding 9 set in a groove formed in the respective support 8 .
  • the rotor halves 6 a and 6 b on the back faces 3 a and 3 b of the radial impeller wheels 1 and 2 consist of a material that interacts magnetically with the magnetic windings 9 .
  • the rotor bearing halves 6 a and 6 b are for example fitted with permanent magnets, magnetizable material or a material in which an opposing field is induced.
  • FIG. 1 shows by way of example a design in which the first radial impeller wheel 1 is comprised of a body 10 formed with axially and radially extending blades and a flat disk 11 of a different material integrally fixed to the rear side of the body 10 .
  • the disk 11 forms the rotor bearing half 6 a of the corresponding axial bearing 5 a and is of a material selected for its magnetic properties.
  • the rotor half 6 a of the annular disk 11 with an axially centered and throughgoing through hole can, for example, be permanently connected to the blade body 10 by friction welding.
  • FIG. 1 further shows that the axially oppositely effective bearings 5 a and 5 b flank a radial bearing 12 mounted on the rotor shaft 4 and formed as a magnetic bearing with an inner rotor ring 13 carried on the shaft 4 and an outer stator ring 14 carried on the fixed support 17 . While the stator ring 14 has magnetic windings 18 , the rotor ring 13 consists of a material with suitable magnetic properties to form a radial magnetic bearing together with the magnetic windings 18 of the stator ring 14 .
  • stator bearing half 7 a first one stator bearing half 7 a , then the radial bearing 12 , then the other stator bearing half 7 b , and finally the second radial impeller wheel 2 with the corresponding rotor bearing half 6 b mounted on its back face 3 b , are installed, one after the other.
  • the diameter of the rotor shaft 4 decreases in steps each intended to carry a respective one of the described components.
  • the described configuration is not only to be assembled successively, but can also in reverse sequence be at least partially disassembled, so that subsequent maintenance or the exchange of individual components is still possible.
  • the first impeller wheel 1 can be fixed with other machine components in a main housing 15 , with the rotor shaft 4 extending out of the main housing 15 and the second radial impeller wheel 2 mounted outside the main housing 15 .
  • a corresponding design is shown in FIG. 2 .
  • the turbomachine can also have an electric machine 19 that is provided together with the radial bearing 12 between the radial impeller wheels 1 and 2 .
  • This machine 19 can be a motor, a generator, or a motor/generator.
  • the radial impeller wheels 1 and 2 can also be mounted overhung, that is each at a respective end of the rotor shaft 4 .
  • the invention is not limited to this type of design.
  • the rotor shaft 4 extends beyond at least one of the two radial impeller wheels 1 and 2 , for instance into the housing 15 .
US13/417,507 2011-03-24 2012-03-12 Turbo machine Abandoned US20120243986A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/746,871 US9670792B2 (en) 2011-03-24 2015-06-23 Method of making a turbomachine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011001530A DE102011001530A1 (de) 2011-03-24 2011-03-24 Turbomaschine
DE102011001530.2 2011-03-24

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/746,871 Continuation-In-Part US9670792B2 (en) 2011-03-24 2015-06-23 Method of making a turbomachine

Publications (1)

Publication Number Publication Date
US20120243986A1 true US20120243986A1 (en) 2012-09-27

Family

ID=45421987

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/417,507 Abandoned US20120243986A1 (en) 2011-03-24 2012-03-12 Turbo machine

Country Status (9)

Country Link
US (1) US20120243986A1 (de)
EP (1) EP2503104B1 (de)
JP (1) JP2012202406A (de)
CN (1) CN102691534B (de)
BR (1) BR102012006452A2 (de)
CA (1) CA2771922C (de)
DE (1) DE102011001530A1 (de)
IN (1) IN2012DE00522A (de)
RU (1) RU2498079C1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150292330A1 (en) * 2011-03-24 2015-10-15 Atlas Copco Energas Gmbh Method of making a turbomachine
US20160363050A1 (en) * 2015-06-10 2016-12-15 General Electric Company Pitch change mechanism for shrouded fan with low fan pressure ratio
US20170194833A1 (en) * 2014-06-05 2017-07-06 Samsung Electronics Co., Ltd. Motor assembly
CN114922838A (zh) * 2022-06-24 2022-08-19 浙江鹏阳风机有限公司 一种双出风口的造纸用高效节能风机

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CN103195483A (zh) * 2012-11-22 2013-07-10 袁丽君 新型汽轮机
CN103821566B (zh) * 2014-02-08 2015-09-09 华南理工大学 一种单涡轮与双涡轮可切换式空气启动马达
CN104500268A (zh) * 2014-12-12 2015-04-08 常州环能涡轮动力股份有限公司 具有双面离心压轮的微型涡轮喷气发动机
US10927892B2 (en) 2015-02-26 2021-02-23 Carrier Corporation Magnetic thrust bearing
DE102015209682A1 (de) 2015-05-27 2016-12-01 Robert Bosch Gmbh Turbomaschine
CN104929975A (zh) * 2015-06-30 2015-09-23 黑龙江凯普瑞机械设备有限公司 一种离心式风机及用于连接其叶轮和转轴的连接装置
CN106160315A (zh) * 2016-08-02 2016-11-23 天津飞旋科技研发有限公司 带两叶轮的磁悬浮电机纯风冷散热结构
EP3507514B1 (de) * 2016-08-31 2020-12-23 Carrier Corporation Magnetisches axiallager
CN107269552B (zh) * 2017-07-04 2023-06-30 上海马陆日用友捷汽车电气有限公司 一种用于风叶驱动的嵌件
CN109162957B (zh) * 2018-11-14 2023-08-15 南京腾图节能科技有限公司 一种水泵
EP3683464B1 (de) 2019-01-21 2022-03-02 Ingersoll-Rand Industrial U.S., Inc. Aktive magnetlagervorrichtung
CN112653272A (zh) * 2020-12-11 2021-04-13 清华大学 一种航空涡轮发动机的压气机与启发一体化电机集成
CN115638133B (zh) * 2022-09-19 2023-10-27 百事德机械（江苏）有限公司 一种具备高散热结构的磁悬浮风机蜗壳及其制备方法
CN115596549B (zh) * 2022-12-08 2023-03-10 常州柯林电子科技技术有限公司 一种天然气燃烧混合变频电机组件及其工作方法

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US20090015012A1 (en) * 2007-07-14 2009-01-15 Andreas Metzler Axial in-line turbomachine

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US4358253A (en) * 1980-04-01 1982-11-09 Toyota Jidosha Kogyo Kabushiki Kaisha Turbocharger for use in an internal combustion engine
US5961246A (en) * 1996-04-03 1999-10-05 Ishikawajima-Harima Heavy Industries, Ltd. Structure for joining impeller to rotatable shaft
US20090015012A1 (en) * 2007-07-14 2009-01-15 Andreas Metzler Axial in-line turbomachine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150292330A1 (en) * 2011-03-24 2015-10-15 Atlas Copco Energas Gmbh Method of making a turbomachine
US9670792B2 (en) * 2011-03-24 2017-06-06 Atlas Copco Energas Gmbh Method of making a turbomachine
US20170194833A1 (en) * 2014-06-05 2017-07-06 Samsung Electronics Co., Ltd. Motor assembly
US10749410B2 (en) * 2014-06-05 2020-08-18 Samsung Electronics Co., Ltd. Motor assembly
US10778065B2 (en) 2014-06-05 2020-09-15 Samsung Electronics Co., Ltd. Motor assembly
US20160363050A1 (en) * 2015-06-10 2016-12-15 General Electric Company Pitch change mechanism for shrouded fan with low fan pressure ratio
US9963981B2 (en) * 2015-06-10 2018-05-08 General Electric Company Pitch change mechanism for shrouded fan with low fan pressure ratio
CN114922838A (zh) * 2022-06-24 2022-08-19 浙江鹏阳风机有限公司 一种双出风口的造纸用高效节能风机

Also Published As

Publication number Publication date
EP2503104A2 (de) 2012-09-26
DE102011001530A1 (de) 2012-09-27
IN2012DE00522A (de) 2015-06-05
CN102691534A (zh) 2012-09-26
EP2503104B1 (de) 2018-02-28
JP2012202406A (ja) 2012-10-22
EP2503104A3 (de) 2016-01-27
RU2498079C1 (ru) 2013-11-10
CA2771922A1 (en) 2012-09-24
CA2771922C (en) 2015-07-07
BR102012006452A2 (pt) 2014-04-22
CN102691534B (zh) 2016-01-20
RU2012111266A (ru) 2013-09-27

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