US20090304316A1 - Horizontal shaft type rotary machine - Google Patents

Horizontal shaft type rotary machine Download PDF

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Publication number
US20090304316A1
US20090304316A1 US12/463,650 US46365009A US2009304316A1 US 20090304316 A1 US20090304316 A1 US 20090304316A1 US 46365009 A US46365009 A US 46365009A US 2009304316 A1 US2009304316 A1 US 2009304316A1
Authority
US
United States
Prior art keywords
thrust bearing
bearing devices
horizontal
leak oil
end parts
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
US12/463,650
Other languages
English (en)
Inventor
Kenichi Hattori
Tadaaki Kakimoto
Akitomi Semba
Keiji Fugane
Makoto Hemmi
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Assigned to HITACHI, LTD. reassignment HITACHI, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEMMI, MAKOTO, FUGANE, KEIJI, HATTORI, KENICHI, KAKIMOTO, TADAAKI, SEMBA, AKITOMI
Publication of US20090304316A1 publication Critical patent/US20090304316A1/en
Priority to US13/405,898 priority Critical patent/US8882356B2/en
Abandoned legal-status Critical Current

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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
    • 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
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1085—Channels or passages to recirculate the liquid in the bearing
    • 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
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • 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
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only

Definitions

  • the present invention relates to a horizontal shaft type rotary machine such as a rotary electric machine or a pump, and in particular, relates to a rotary machine incorporating horizontal type slide bearing devices for supporting a horizontal rotary shaft and thrust bearing devices for bearing a thrust force acting upon the horizontal rotary shaft.
  • the thrust bearing devices are arranged adjacent to the horizontal type slide bearing devices. These thrust bearing devices are opposed to each other only below the center axis of thrust bearing parts formed on the horizontal rotary shaft, in order to bear the thrust exerted by the horizontal shaft with a pressure receiving area with necessity minimum.
  • JP-A-2008-95703 is advantageous in view of the fact that the thrust force can be born by a pressure receiving area with a necessity minimum.
  • a semi-peripheral type thrust bearing device requires an exclusive oil supply system for feeding a lubrication oil onto its slide surface, in addition to the oil feed system for the horizontal type slide bearing device.
  • An object of the present invention is to provide a horizontal shaft type rotary machine which can facilitate the supply of oil into thrust bearing devices.
  • a thrust bearing device is provided in its circumferential end parts with leak oil introduction means for introducing leak oil of lubrication oil from a horizontal type slide bearing device onto a slide surfaces of the thrust bearing device.
  • the lubrication for the thrust bearing device can be made by using the leak oil of the lubrication oil from the horizontal type slide bearing device, and as a result, no oil feed system exclusive for the thrust bearing device is required, thereby it is possible to simplify the arrangement of the pipe line of the oil feed system and the control for the feed quantity of lubrication oil.
  • FIG. 1 is a schematic side view illustrating a turbine generator in a first embodiment of a horizontal shaft type rotary machine according to the invention.
  • FIG. 2 is an enlarged view illustrating a portion P in FIG. 1 .
  • FIG. 3 is an enlarged perspective view illustrating a thrust bearing device shown in FIG. 2 , in detail.
  • FIG. 4 is a front view illustrating the thrust bearing shown in FIG. 3 .
  • FIG. 5 is a view illustrating a second embodiment of the invention, corresponding to FIG. 2 .
  • FIG. 6 is a view illustrating a portion around a thrust bearing device shown in FIG. 5 .
  • FIG. 7 is a view illustrating a third embodiment of the invention, corresponding to FIG. 2 .
  • FIG. 8 is a front view illustrating a portion around a thrust bearing device shown in FIG. 7 .
  • reference numeral 1 denotes TURBINE GENERATOR, 2 HOUSING, 3 A, 3 B HORIZONTAL TYPE SLIDE BEARING, 4 BEARING METAL, 4 S SLIDE SURFACE, 4 F SPLIT SURFACE, 5 BEARING MEMBER, 6 HORIZONTAL ROTARY SHAFT, 6 S THRUST BEARING PART, 7 ROTOR, 8 STATOR, 9 THRUST BEARING DEVICE, 9 S SLIDE SURFACE, 9 G OIL GROOVE, 10 , 10 A LEAK OIL INTRODUCTION SLOP SURFACE, 11 LEAK OIL INTRODUCTION COVER, and 11 A CONVENIENT COVER.
  • the turbine generator 1 comprises a housing 2 horizontally laid, horizontal type slide bearing devices 3 A, 3 B arranged at longitudinally opposite ends of the housing 2 , a horizontal rotary shaft 6 slidably supported by the slide bearing devices 3 A, 3 B, a rotor 7 fixed to the horizontal rotary shaft 6 , a stator 8 supported in the housing and opposed to the outer peripheral side of the rotor 7 with a gap therebetween.
  • Each of the slide bearing devices 3 A, 3 B has a bearing metal 4 which is formed at its inner periphery with a slide surface 4 S and which has a vertically bi-split configuration, and a bearing member 5 slidably supporting the bearing metal 4 at the outer periphery of the latter.
  • the bearing metal 4 having a vertically bi-split configuration has upper and lower split surfaces 4 F which are horizontally laid and which abut against each other with the center of the horizontal rotary shaft 6 as a boundary.
  • semicircular ring-like thrust bearing devices 9 are arranged adjacent to the end parts of the slide bearing devices 3 A, 3 B and concentric with the horizontal rotary shaft 6 at positions where they are opposed to the lower halves of the slide bearing devices 3 A, 3 B. Further, the horizontal rotary shaft 4 is formed thereon with thrust bearing parts 6 S opposed to the thrust bearing devices 9 .
  • the slide bearing devices 3 A, 3 B mainly support the rotor 7 including the horizontal rotary shaft 6 , and the thrust bearing devices 3 A, 3 B bear the rotor 7 which is therefore prevented from being axially shifted. Further, upon occurrence of a force for displacing the horizontal rotary shaft 6 due to variation in load or the like, the thrust bearing parts 6 S of the horizontal rotary shaft 7 are made into slidable contact with the thrust bearing devices 9 so as to resist against the force.
  • lubrication oil is fed onto the slide surfaces of the slide bearing devices 3 A, 3 B from an oil feed system which is not shown, and forms oil films between the slide surfaces and the horizontal rotary shaft 6 in order to allow the rotor 7 to rotate with low friction.
  • the supply of the lubrication oil as stated above is continued so as to prevent the oil films from being broken, and the lubrication oil which flows subsequent to the formation of the oil films or the lubrication oil which has not contributed to the formation of the oil films, leaks outside from the opposite sides of the bearing metals 4 .
  • the leak oil has to be collected for reusing or wasting.
  • oil grooves 9 G which are formed in the slide surface 9 S of each thrust bearing device 9 adjacent to the bearing metal 4 and which are substantially radially extended, at several positions in the circumferential direction, and also there are provided leak oil introduction slope surfaces 10 in the circumferential end parts of the slide surface 9 S so as to constitute leak oil introduction means. Further, the leak oil introduction slope surfaces 10 are configured being inclined downward away from the horizontal type slide bearing devices 3 A, 3 B, in the circumferential end parts which are opposed to each other in the rotating direction of the horizontal rotary shaft 6 .
  • the leak oil from the slide bearing devices 3 A, 3 B which are opposed to the semicircular ring-like thrust bearing devices 9 is fed onto the slide surfaces 9 S through the intermediary of the oil grooves 9 G. Meanwhile, the leak oil from the upper halves of the slide bearing devices 3 A, 3 B leaks and flows downward from the end parts of the slide bearing devices 3 A, 3 B, and is then introduced onto the slide surfaces 9 S by mans of the leak oil introduction slope surfaces 10 in the circumferential end parts of the thrust bearing devices 9 .
  • the leak oil from the slide bearing devices 3 A, 3 B can efficiently contribute to the lubrication for the thrust bearing devices 9 with no provision of an exclusive oil feed system for the thrust bearing devices.
  • FIGS. 5 and 6 show the configuration of a second embodiment of the invention, which corresponds to the configuration of the first embodiment shown in FIGS. 2 and 4 .
  • like reference numerals are used to denote like parts to those shown in FIGS. 2 and 4 in order to abbreviate the duplicated explanation thereto.
  • semicircular ring-like leak oil introduction covers 11 are provided so as to cover the axial end parts of the slide bearing devices 3 A, 3 B, and are extended from the circumferential end parts of the thrust bearing device 9 on the side above the center axis of the thrust bearing parts 6 S with no provision of the leak oil introduction slope surfaces 10 in the circumferential end parts of the slide surface 9 S.
  • the configuration of the third embodiment is a variant of the configurations of the first and second embodiments of the present invention, and accordingly, like reference numerals are used to denote like parts to those shown in FIGS. 1 to 6 in order to abbreviate duplicated explanation thereto.
  • the configuration of the third embodiment is different from the first embodiment in that leak oil introduction slope surfaces 10 A are formed in the circumferential end parts of the slide surface 9 S on the inner diameter side, which is opposed to the thrust bearing parts 6 S of the horizontal rotary shaft 7 , with no provision of the leak oil introduction slope surfaces 10 which extends over the entire width of the slide surface 9 S at the circumferential end parts of the slide surface 9 S, and is different from the second embodiment in that semicircular disc convenient covers 11 A are provided, instead of the semicircular disc-like leak oil introduction covers 11 .
  • this embodiment can exhibit technical effects and advantages similar to those obtained by the configuration of the first embodiment. It is noted in this embodiment that the lubrication oil can be introduced by a larger quantity onto the slide surface 9 S since the leak oil introduction slope surfaces 10 A are formed on the side opposed to the thrust bearing parts 6 S of the horizontal rotary shaft 7 , and accordingly, this embodiment is advantageously used for horizontal shaft type rotary machines of the kind that the lubrication oil is required by a large quantity.
  • leak oil introduction slope surfaces 10 and the leak oil introduction covers 11 are solely use respectively in the first and second embodiments, there may be used them in combination. Further, it goes without saying that they may be used in combination with the leak oil introduction slope surfaces 10 A and the convenient covers 11 A in the configuration of the third embodiment selectively in dependence upon a feed oil quantity.
  • the leak oil introduction slope surfaces 10 or the leak oil introduction slope surfaces 10 A are formed on both circumferential end parts of the thrust bearing devices 9
  • the leak oil introduction slope surface 10 or the leak oil introduction surface 10 A may be formed only on the side opposed to the direction of the rotation of the horizontal rotary shaft in the case that the direction of rotation of the horizontal shaft type rotary machine is fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)
  • Motor Or Generator Frames (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US12/463,650 2008-06-10 2009-05-11 Horizontal shaft type rotary machine Abandoned US20090304316A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/405,898 US8882356B2 (en) 2008-06-10 2012-02-27 Horizontal shaft type rotary machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008151145A JP5159447B2 (ja) 2008-06-10 2008-06-10 横軸型回転機
JP2008-151145 2008-06-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/405,898 Division US8882356B2 (en) 2008-06-10 2012-02-27 Horizontal shaft type rotary machine

Publications (1)

Publication Number Publication Date
US20090304316A1 true US20090304316A1 (en) 2009-12-10

Family

ID=40791636

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/463,650 Abandoned US20090304316A1 (en) 2008-06-10 2009-05-11 Horizontal shaft type rotary machine
US13/405,898 Active US8882356B2 (en) 2008-06-10 2012-02-27 Horizontal shaft type rotary machine

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/405,898 Active US8882356B2 (en) 2008-06-10 2012-02-27 Horizontal shaft type rotary machine

Country Status (5)

Country Link
US (2) US20090304316A1 (de)
EP (1) EP2133579B1 (de)
JP (1) JP5159447B2 (de)
KR (1) KR20090128335A (de)
CN (1) CN101603566B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8616777B1 (en) 2012-11-16 2013-12-31 Pratt & Whitney Canada Corp. Bearing assembly with inner ring
US20220196069A1 (en) * 2020-12-17 2022-06-23 Renk Gmbh Sliding bearing having sliding segments

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014163402A (ja) * 2013-02-21 2014-09-08 Daido Metal Co Ltd 半割スラスト軸受および軸受装置
US9109625B2 (en) 2013-04-09 2015-08-18 Hamilton Sundstrand Corporation Thrust plate including cooling slots
WO2015125239A1 (ja) * 2014-02-19 2015-08-27 三菱重工コンプレッサ株式会社 回転システム
CN106499723A (zh) * 2016-12-30 2017-03-15 深圳智慧能源技术有限公司 滑动轴承
WO2018120130A1 (zh) * 2016-12-30 2018-07-05 深圳智慧能源技术有限公司 滑动轴承

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5529399A (en) * 1993-10-28 1996-06-25 Renk Aktiengesellschaft Journal-thrust bearing assembly
US6149310A (en) * 1998-01-12 2000-11-21 Daido Metal Company Ltd. Half thrust bearing
US7134793B2 (en) * 2004-08-11 2006-11-14 Federal-Mogul Worldwide, Inc. Thrust bearing assembly

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JPH071332A (ja) 1993-06-18 1995-01-06 Olympus Optical Co Ltd 砥石位置検出・補正装置
JPH08214490A (ja) * 1995-02-01 1996-08-20 Kusatsu Denki Kk 電動機の軸受装置
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JP4554583B2 (ja) * 2006-10-05 2010-09-29 株式会社日立製作所 スラスト軸受装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5529399A (en) * 1993-10-28 1996-06-25 Renk Aktiengesellschaft Journal-thrust bearing assembly
US6149310A (en) * 1998-01-12 2000-11-21 Daido Metal Company Ltd. Half thrust bearing
US7134793B2 (en) * 2004-08-11 2006-11-14 Federal-Mogul Worldwide, Inc. Thrust bearing assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8616777B1 (en) 2012-11-16 2013-12-31 Pratt & Whitney Canada Corp. Bearing assembly with inner ring
US20220196069A1 (en) * 2020-12-17 2022-06-23 Renk Gmbh Sliding bearing having sliding segments
US11655852B2 (en) * 2020-12-17 2023-05-23 Renk Gmbh Sliding bearing having sliding segments

Also Published As

Publication number Publication date
CN101603566B (zh) 2011-06-22
EP2133579B1 (de) 2015-11-25
EP2133579A2 (de) 2009-12-16
EP2133579A3 (de) 2012-10-10
US20120155790A1 (en) 2012-06-21
US8882356B2 (en) 2014-11-11
JP5159447B2 (ja) 2013-03-06
JP2009299693A (ja) 2009-12-24
CN101603566A (zh) 2009-12-16
KR20090128335A (ko) 2009-12-15

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AS Assignment

Owner name: HITACHI, LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HATTORI, KENICHI;KAKIMOTO, TADAAKI;SEMBA, AKITOMI;AND OTHERS;REEL/FRAME:022664/0586;SIGNING DATES FROM 20090330 TO 20090331

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION