WO2007148390A1 - 回転機械の軸受構造、回転機械、軸受構造の製造方法、並びに回転機械の製造方法 - Google Patents
回転機械の軸受構造、回転機械、軸受構造の製造方法、並びに回転機械の製造方法 Download PDFInfo
- Publication number
- WO2007148390A1 WO2007148390A1 PCT/JP2006/312413 JP2006312413W WO2007148390A1 WO 2007148390 A1 WO2007148390 A1 WO 2007148390A1 JP 2006312413 W JP2006312413 W JP 2006312413W WO 2007148390 A1 WO2007148390 A1 WO 2007148390A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- turbine
- compressor
- clearance
- bearing structure
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/18—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with floating brasses or brushing, rotatable at a reduced speed
-
- 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
- F01D25/166—Sliding contact bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
-
- 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
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
- F16C2360/24—Turbochargers
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49636—Process for making bearing or component thereof
- Y10T29/49643—Rotary bearing
- Y10T29/49679—Anti-friction bearing or component thereof
Definitions
- Bearing structure of rotating machine rotating machine, manufacturing method of bearing structure, and manufacturing method of rotating machine
- the present invention relates to a bearing structure used in a high-speed rotating machine such as a supercharger, and more particularly to a technique for suppressing unstable vibration including self-excited vibration.
- This bearing structure As a bearing structure used in a high-speed rotating machine such as a supercharger, one having a floating bush type sliding bearing (floating bush bearing) is known.
- This bearing structure consists of a structure in which a sliding bearing (floating bush) is rotatably arranged between a rotating shaft and a housing, and a clearance between the shaft and the bearing and a clearance between the bearing and the housing.
- a sliding bearing floating bush
- Each is supplied with lubricating oil from an oil supply source.
- turbocharger compression of air or an air-fuel mixture supplied to a cylinder of an internal combustion engine in advance is called supercharging, and the compressor is called a supercharger.
- the turbocharger directly connected to the gas turbine using the exhaust gas of the engine is called an exhaust turbine supercharger, or a turbocharger for short.
- the turbocharger is simply referred to as “supercharger”.
- a shaft rotates through an oil film inside the bearing, and the bearing rotates as the shaft rotates.
- a vibration damping effect is obtained by the oil film formed on the inner peripheral surface and the outer peripheral surface of the bearing. Since the speed difference between the shaft and the bearing is suppressed by the rotational movement of the bearing, the energy loss associated with the shearing of the lubricating oil can be relatively small.
- Patent Document 1 Japanese Patent Application Publication No. 2002-213450 (paragraph numbers 0043-0046, FIG. 10)
- Patent Document 2 Japanese Patent Application Publication No. 2002-138846
- Patent Document 3 Japanese Patent Application Publication No. 2002-213248
- Patent Document 4 Japanese Patent Application Publication No. 2001-12460
- Patent Document 5 Japanese Patent Application Publication No. 11-336744
- An object of the present invention is to provide a bearing structure capable of suppressing unstable vibration including self-excited vibration.
- the present inventor regarding the turbine-side bearing and the compressor-side bearing each having a floating bush bearing force, the clearance between each bearing and the rotating shaft (inner circumferential clearance) and the clearance between each bearing and the housing (outer circumferential clearance). In particular, it has been clarified that unstable vibration can be suppressed by setting the above-mentioned inner circumference clearance appropriately.
- a bearing structure according to the present invention is a bearing structure of a rotating machine disposed on a rotating shaft that connects a turbine impeller and a compressor impeller, and each has a floating bush type sliding bearing force. And a compressor side bearing, the turbine side inner peripheral clearance force between the turbine side bearing and the rotating shaft is set larger than the compressor side inner peripheral clearance between the compressor side bearing and the rotating shaft. ing.
- the ratio of the difference between the average value of the turbine side inner peripheral clearance and the compressor side inner peripheral clearance is 0.2 or more.
- the turbine side inner clearance is TI
- the compressor side inner clearance is CI
- the average value (average inner clearance) is AI
- (TI—CI) ZAI ⁇ 0.2 It is preferable to satisfy.
- the bearing structure of the present invention can also be applied to a form in which a turbine side bearing and a compressor side bearing are integrated.
- a rotating machine of the present invention supports a turbine impeller, a compressor impeller, a rotating shaft that connects the turbine impeller and the compressor impeller, a housing that surrounds the rotating shaft, and a rotating shaft that rotatably supports the rotating shaft.
- the bearing device has the bearing structure described above.
- a method for manufacturing a bearing structure according to the present invention is a method for manufacturing a floating bush type bearing structure.
- the bearing structure includes a floating bush type turbine side bearing and a compressor side bearing that support a rotating shaft.
- the turbine-side inner peripheral clearance between the turbine-side bearing and the rotary shaft is set larger than the compressor-side inner peripheral clearance between the compressor-side bearing and the rotary shaft. .
- a method of manufacturing a rotating machine according to the present invention is a method of manufacturing a rotating machine having a floating bush type bearing structure, and the bearing structure includes a floating bush type turbine-side bearing and a compressor that support a rotating shaft, respectively.
- a turbine side inner peripheral clearance between the turbine side bearing and the rotary shaft is set larger than a compressor side inner peripheral clearance between the compressor side bearing and the rotary shaft.
- a ratio of a difference between the turbine side inner peripheral clearance and the compressor side inner peripheral clearance to be an average value is 0.2 or more.
- FIG. 1 is a cross-sectional view showing an overall configuration of a turbocharger (turbocharger) to which a bearing structure of the present invention is applied.
- FIG. 2 is a diagram schematically showing the main part of the bearing device.
- FIG. 3 is a graph showing the results of a vibration test performed on a turbocharger equipped with a bearing device.
- FIG. 1 is a cross-sectional view showing the overall configuration of a supercharger (turbocharger) as a rotating machine to which the bearing structure of the present invention is applied.
- a turbocharger 10 includes a turbine impeller 11, a compressor impeller 12, a shaft 13 as a rotating shaft that connects the turbine bin impeller 11 and the compressor impeller 12, and
- the turbine impeller 11 and the shaft 13 are integrated by welding or the like, and the compressor impeller 12 and the shaft 13 are coupled via a nut or the like.
- the winging 14 also has a component force in which the turbine housing 14a, the bearing housing 14b, the seal plate 14c, the compressor housing 14d, and the like are connected in order.
- the rotation speed of the shaft 13 is, for example, several tens of thousands to several hundred thousand rpm.
- the bearing device 15 has a full float type floating bush bearing structure. That is, the bearing device 15 has two floating bush bearings (floating metals) 21 and 22 that are spaced apart in the axial direction, and the clearance between the shaft 13 and the bearings 21 and 22 and the bearings 21 and 22 and the nosing (base). Lubricating oil is supplied to the gaps with the Alling Nosing 14b) via the oil passages 23 and the like. The load in the thrust direction of the shaft 13 is supported by a thrust bearing 25, a collar 26, and the like.
- an oil film is formed and held on the inner and outer peripheral surfaces of the bearings 21 and 22, and the shaft 13 rotates through the oil film inside the bearings 21 and 22. Further, as the shaft 13 rotates, the bearings 21 and 22 rotate through the oil film inside the bearing knowing 14b.
- the rotational speed of the bearings 21 and 22 is, for example, about several tens of percent of the rotational speed of the shaft 13.
- a vibration damping effect is obtained by the oil film formed on the inner and outer peripheral surfaces of the bearings 21 and 22.
- the rotational loss of the bearings 21 and 22 suppresses the speed difference between the shaft 13 and the bearings 21 and 22, so that the energy loss due to the shearing of the lubricating oil is relatively small.
- FIG. 2 is a diagram schematically showing the main part of the bearing device 15.
- the same components as those in FIG. 1 are denoted by the same reference numerals.
- the clearance between the shaft 13 and the turbine side bearing 21 (turbine side inner peripheral clearance) is TI
- the clearance between the shaft 13 and the compressor side bearing 22 (compressor inner peripheral clearance) is CI
- the turbine side bearing 21 And the bearing noise 14b (turbine side outer peripheral clearance) is TO
- the clearance between the compressor side bearing 22 and the bearing housing 14b (compressor side)
- AI the average value of the turbine side inner peripheral clearance (TI) and the compressor side inner peripheral clearance (CI) (the inner peripheral clearance average value).
- the turbine side inner peripheral clearance (TI) is set to be larger than the compressor side inner peripheral clearance (CI), and more preferably, the turbine side inner peripheral clearance (TI) and the compressor side inner peripheral clearance (TI). Since the ratio of the difference between the clearance (CI) and the average value (AI) is 0.2 or more, unstable vibrations including self-excited vibrations are suppressed. As a result, according to the turbocharger 10 (see FIG. 1) provided with the bearing device 15 with the above conditions set, noise during high-speed operation is reduced.
- the outer peripheral clearance can be set.
- TO CO is effective in suppressing the above unstable vibration.
- the vibration test was performed under a plurality of conditions with different inner circumferential clearance differences (TI CI), and unstable vibration components were extracted and compared with each other by a vector analysis or the like.
- TI CI inner circumferential clearance differences
- FIG. 3 is a graph showing the relationship between the inner peripheral clearance difference and the unstable vibration power ratio.
- the horizontal axis shows the ratio of the difference between the turbine inner circumference clearance (TI) and the compressor inner circumference clearance (CI) to the average ((TI—CI) ZAI), and the vertical axis shows zero clearance difference.
- the ratio of the vibration power at each clearance difference to the vibration power (estimated value) Show.
- the power is proportional to the square of the forced force.
- the mass damper system of forced vibration can be expressed by the vibration equation in which the general forcing force of the following equation (3) works.
- F is a force and is proportional to acceleration. In other words, power is proportional to the square of acceleration.
- a turbine-side floating bush whose inner diameter is larger than the inner diameter of the compressor-side floating bush.
- a floating bush suitable for each is manufactured, and an average floating bush is manufactured and classified into a set having a large manufacturing tolerance and a set having a small manufacturing tolerance. There is a way to choose.
- the manufactured floating bush is classified into four categories (for example, A, B, C, D) by the size of the inner diameter, and they are selected by combining them in pairs, such as a combination of A and C or a combination of B and D. Also meditate.
- the turbine side floating bush and the compressor side floating bush are different.
- a mark may be used.
- a different mark may be used for each post-production classification.
- a mark (identification code) that can individually identify each of the plurality of floating bushes to be manufactured may be used.
- the bearing structure of the rotating machine of the present invention unstable vibration including self-excited vibration can be suppressed.
- noise during high-speed operation can be suppressed by suppressing unstable vibration.
- the method for manufacturing a bearing structure of the present invention it is possible to manufacture a low-noise bearing structure in which unstable vibration is suppressed, and according to the method for manufacturing a rotary machine of the present invention, A low-noise rotating machine in which unstable vibration is suppressed can be manufactured.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/305,231 US8535022B2 (en) | 2006-06-21 | 2006-06-21 | Bearing structure of rotating machine, rotating machine, method of manufacturing bearing structure, and method of manufacturing rotating machine |
EP06767072.9A EP2037100B1 (en) | 2006-06-21 | 2006-06-21 | Bearing structure for rotating machine and method of manufacturing bearing structure |
PCT/JP2006/312413 WO2007148390A1 (ja) | 2006-06-21 | 2006-06-21 | 回転機械の軸受構造、回転機械、軸受構造の製造方法、並びに回転機械の製造方法 |
CN200680055019XA CN101473124B (zh) | 2006-06-21 | 2006-06-21 | 旋转机械的轴承构造、旋转机械、轴承构造的制造方法、以及旋转机械的制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/312413 WO2007148390A1 (ja) | 2006-06-21 | 2006-06-21 | 回転機械の軸受構造、回転機械、軸受構造の製造方法、並びに回転機械の製造方法 |
Publications (1)
Publication Number | Publication Date |
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WO2007148390A1 true WO2007148390A1 (ja) | 2007-12-27 |
Family
ID=38833142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/312413 WO2007148390A1 (ja) | 2006-06-21 | 2006-06-21 | 回転機械の軸受構造、回転機械、軸受構造の製造方法、並びに回転機械の製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8535022B2 (ja) |
EP (1) | EP2037100B1 (ja) |
CN (1) | CN101473124B (ja) |
WO (1) | WO2007148390A1 (ja) |
Cited By (2)
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EP2085578A2 (en) * | 2008-02-01 | 2009-08-05 | Cummins Turbo Technologies Limited | Shaft bearing assembly |
WO2019039338A1 (ja) * | 2017-08-25 | 2019-02-28 | 株式会社Ihi | 過給機 |
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WO2009125452A1 (ja) * | 2008-04-08 | 2009-10-15 | 株式会社Ihi | ターボチャージャ |
DE102010052892A1 (de) * | 2010-12-01 | 2012-06-06 | Voith Patent Gmbh | Lageranordnung für eine Welle eines Turbinenrades |
US9024493B2 (en) | 2010-12-30 | 2015-05-05 | Dresser-Rand Company | Method for on-line detection of resistance-to-ground faults in active magnetic bearing systems |
US8994237B2 (en) | 2010-12-30 | 2015-03-31 | Dresser-Rand Company | Method for on-line detection of liquid and potential for the occurrence of resistance to ground faults in active magnetic bearing systems |
WO2012138545A2 (en) | 2011-04-08 | 2012-10-11 | Dresser-Rand Company | Circulating dielectric oil cooling system for canned bearings and canned electronics |
US8876389B2 (en) | 2011-05-27 | 2014-11-04 | Dresser-Rand Company | Segmented coast-down bearing for magnetic bearing systems |
US8851756B2 (en) * | 2011-06-29 | 2014-10-07 | Dresser-Rand Company | Whirl inhibiting coast-down bearing for magnetic bearing systems |
WO2013099600A1 (ja) * | 2011-12-27 | 2013-07-04 | 三菱重工業株式会社 | 過給機のスラスト軸受装置 |
CN202768085U (zh) * | 2012-06-21 | 2013-03-06 | 霍尼韦尔国际公司 | 涡轮增压器的涡端进气结构及包括其的涡轮增压器 |
DE102013210990A1 (de) * | 2013-06-13 | 2014-12-18 | Continental Automotive Gmbh | Abgasturbolader mit einem Radial-Axial-Turbinenrad |
JP6186920B2 (ja) * | 2013-06-18 | 2017-08-30 | 株式会社Ihi | 過給機用スクロールハウジングの製造方法 |
JP6177421B2 (ja) | 2014-02-25 | 2017-08-09 | 三菱重工業株式会社 | シール構造及び該シール構造を備える過給機 |
CN104132066B (zh) * | 2014-07-15 | 2016-04-27 | 浙江荣发动力有限公司 | 一种用于小型涡轮增压器的浮动轴承结构 |
CN104791132A (zh) * | 2015-03-31 | 2015-07-22 | 奇瑞汽车股份有限公司 | 自动润滑冷却式涡轮喷气发动机 |
CN109882284B (zh) * | 2015-09-14 | 2021-05-25 | 三菱重工发动机和增压器株式会社 | 涡轮增压器 |
US9638203B2 (en) * | 2015-09-15 | 2017-05-02 | Borgwarner Inc. | Bearing housing |
WO2017069025A1 (ja) * | 2015-10-21 | 2017-04-27 | 株式会社Ihi | 軸受構造、および、過給機 |
CN105317841A (zh) * | 2015-12-08 | 2016-02-10 | 中车大连机车研究所有限公司 | 涡轮增压器用半浮动径向轴承 |
US10316692B2 (en) * | 2016-12-20 | 2019-06-11 | Mitsubishi Heavy Industries, Ltd. | Vibration suppression method and vibration suppression apparatus for turbocharger capable of being driven by motor |
CN110848271B (zh) * | 2019-11-19 | 2021-02-23 | 张家港Aaa精密制造股份有限公司 | 一种可调控的滑动轴承及调控方法 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2085578A2 (en) * | 2008-02-01 | 2009-08-05 | Cummins Turbo Technologies Limited | Shaft bearing assembly |
US20090238689A1 (en) * | 2008-02-01 | 2009-09-24 | Zahir Jamil | Shaft bearing assembly |
WO2019039338A1 (ja) * | 2017-08-25 | 2019-02-28 | 株式会社Ihi | 過給機 |
US10989115B2 (en) | 2017-08-25 | 2021-04-27 | Ihi Corporation | Turbocharger |
Also Published As
Publication number | Publication date |
---|---|
CN101473124B (zh) | 2013-03-27 |
US8535022B2 (en) | 2013-09-17 |
EP2037100A1 (en) | 2009-03-18 |
US20100232959A1 (en) | 2010-09-16 |
EP2037100B1 (en) | 2017-11-15 |
EP2037100A4 (en) | 2012-12-12 |
CN101473124A (zh) | 2009-07-01 |
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