WO2017022517A1 - Dispositif de palier et machine rotative - Google Patents

Dispositif de palier et machine rotative Download PDF

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Publication number
WO2017022517A1
WO2017022517A1 PCT/JP2016/071531 JP2016071531W WO2017022517A1 WO 2017022517 A1 WO2017022517 A1 WO 2017022517A1 JP 2016071531 W JP2016071531 W JP 2016071531W WO 2017022517 A1 WO2017022517 A1 WO 2017022517A1
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WO
WIPO (PCT)
Prior art keywords
bearing
rotating shaft
lubricating oil
oil
oil ring
Prior art date
Application number
PCT/JP2016/071531
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English (en)
Japanese (ja)
Inventor
康 川井
学 辻村
淳一 早川
Original Assignee
株式会社 荏原製作所
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 株式会社 荏原製作所 filed Critical 株式会社 荏原製作所
Publication of WO2017022517A1 publication Critical patent/WO2017022517A1/fr

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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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of 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
    • 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
    • F16N7/14—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the lubricant being conveyed from the reservoir by mechanical means
    • F16N7/16—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the lubricant being conveyed from the reservoir by mechanical means the oil being carried up by a lifting device
    • F16N7/20—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the lubricant being conveyed from the reservoir by mechanical means the oil being carried up by a lifting device with one or more members moving around the shaft to be lubricated
    • F16N7/22—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the lubricant being conveyed from the reservoir by mechanical means the oil being carried up by a lifting device with one or more members moving around the shaft to be lubricated shaped as rings

Definitions

  • the present invention relates to a bearing device used for a rotary machine such as a horizontal shaft pump, and more particularly to a bearing device capable of supplying lubricating oil to a bearing appropriately.
  • the present invention also relates to a rotary machine such as a pump provided with such a bearing device.
  • a bearing device is disposed in the vicinity of the end of the rotary shaft in order to rotatably support the rotary shaft.
  • a lubricating oil storage tank in which lubricating oil for lubricating and cooling the bearing is stored is provided inside or outside the bearing device. Examples of means for supplying lubricating oil from the lubricating oil storage tank to the bearing include a forced oil supply device using external power or a self-lubricating device that does not use external power.
  • the forced oil supply device supplies lubricating oil to a bearing arranged inside the bearing device using external power from a lubricating oil storage tank arranged outside the bearing device.
  • the lubricating oil is pumped up from the lubricating oil storage tank disposed below the rotating shaft inside the bearing device by using the rotational force of the rotating shaft and supplied to the bearing.
  • FIGS. 7 to 9B An example of the forced oiling device is shown in FIGS. 7 to 9B.
  • FIG. 7 is a cross-sectional view showing a bearing device in the case of using a forced oil supply device.
  • FIG. 8 is a piping and instrument system diagram of the forced oiling device.
  • FIG. 9A and FIG. 9B are a schematic side view and a schematic plan view showing the arrangement of the pump when the forced oil supply device is used.
  • the rotary shaft 1 of the horizontal shaft pump 100 extends horizontally, and the end of the rotary shaft 1 is rotatably supported by bearings 9A and 9B.
  • a forced oil supply device 26 is disposed outside the horizontal shaft pump 100. Lubricating oil is forcibly supplied from the forced oil supply device 26 to the bearings 9A and 9B.
  • the forced oil supply device 26 includes a plurality of components such as a lubricating oil pump 21, a filter 24, a lubricating oil cooler 23, a plurality of hydraulic pressure monitoring instruments 25, and a lubricating oil tank 22. Therefore, the cost of the forced oil supply device 26 is increased.
  • the installation space of the forced oil supply device 26 is required.
  • the installation space for the forced oil supply apparatus 26 since the volume of each component which comprises the forced oil supply apparatus 26 is large, the installation space for the forced oil supply apparatus 26 also becomes large. As a result, the installation space required for the entire pump system becomes large, which may cause a reduction in product competitiveness in the market as a rotating machine.
  • FIG. 10 an example of a conventional bearing device using a self-lubricating device is shown in FIG.
  • the end of the rotating shaft 1 is rotatably supported by bearings 9A and 9B.
  • the lubricating oil storage tank 10 in which the lubricating oil is stored is disposed below the bearings 9A and 9B.
  • An oil ring 20 is provided as a self-lubricating device for scooping up the lubricating oil in the lubricating oil storage tank 10.
  • the oil ring 20 is disposed so as to surround the outer peripheral surface of the rotating shaft 1 and rotates with the rotation of the rotating shaft 1.
  • the lubricating oil is supplied to the bearings 9 ⁇ / b> A and 9 ⁇ / b> B by scooping up the lubricating oil in the lubricating oil storage tank 10 by the rotating oil ring 20.
  • Such a self-lubricating device using the oil ring 20 is conventionally known as an oil ring self-lubricating device.
  • the bearing 9B used as the radial bearing is a sliding bearing
  • the oil ring is relatively evenly arranged in the bearing, and the lubricating oil is evenly distributed over the entire sliding surface of the sliding bearing. It was possible to dispense.
  • the bearing 9A used as a thrust bearing is a double-row ball bearing so that the thrust force acting in both directions of the rotary shaft 1 can be supported, so that an oil ring cannot be disposed inside the bearing as it is. It was. Further, since the diameter of the rotating shaft is small at the end of the rotating shaft for positioning the inner ring of the rolling bearing, the oil ring cannot be disposed in the vicinity of both ends of the thrust bearing 9A.
  • the oil ring 20 is disposed only on the shaft end side of the thrust bearing 9A. Therefore, even if the lubricating oil is supplied to the rolling bearing close to the oil ring 20, a sufficient amount of lubricating oil cannot be supplied to the rolling bearing far from the oil ring, and further, the lubricating oil whose temperature has increased is supplied. It had been.
  • Patent Document 1 discloses a technique for guiding oil pumped up by an oil ring to a bearing. However, there is no mention at all about the problem to supply the lubricating oil evenly to the double row rolling bearing and the countermeasures against it.
  • the present invention has been made in view of the above-described conventional problems, and provides a bearing device using an oil ring capable of supplying lubricating oil in an appropriate amount evenly and stably to a double row rolling bearing.
  • the purpose is to do.
  • Another object of the present invention is to provide a rotating machine provided with such a bearing device.
  • One aspect of the present invention for solving the above-described problems includes a double-row rolling bearing that receives a load acting in the thrust direction of the rotating shaft, a lubricating oil storage tank disposed below the double-row rolling bearing, and the rotation An oil ring supported by a shaft and scooping up the lubricating oil stored in the lubricating oil storage tank as the rotating shaft rotates, and the oil rings are disposed on both sides of the double row rolling bearing. This is a bearing device.
  • Another aspect of the present invention is a double row rolling bearing that supports a load acting in the thrust direction of the rotating shaft, a lubricating oil storage tank disposed below the double row rolling bearing, supported by the rotating shaft, An oil ring that scoops up the lubricating oil stored in the lubricating oil storage tank as the rotating shaft rotates, and the oil ring is disposed between the two bearings constituting the double row rolling bearing.
  • This is a bearing device.
  • another aspect of the present invention is a rotating machine including a rotating shaft and the bearing device that rotatably supports the rotating shaft.
  • another aspect of the present invention is a pump comprising a rotating shaft, an impeller fixed to the rotating shaft, and the bearing device that rotatably supports the rotating shaft.
  • this invention it is possible to provide a bearing device using an oil ring that can supply lubricating oil in an appropriate amount evenly and stably to a double row rolling bearing. Moreover, this invention can provide rotary machines, such as a pump provided with such a bearing apparatus.
  • FIG. 1 is a cross-sectional view showing an example of a horizontal shaft single-stage pump provided with a bearing device according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing an example of a horizontal shaft multi-stage pump provided with a bearing device according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view showing the structure of a self-lubricating bearing device according to an embodiment of the present invention.
  • 4 is a cross-sectional view taken along line AA in FIG.
  • FIG. 7 is a cross-sectional view showing a bearing device in the case of using a forced oil supply device.
  • FIG. 8 is a piping and instrument system diagram of the forced oiling device.
  • FIG. 9A is a schematic side view showing an arrangement of pumps when a forced oiling device is used.
  • FIG. 9B is a schematic plan view showing the arrangement of the pumps when the forced oiling device is used.
  • FIG. 10 is a cross-sectional view showing an example of a conventional bearing device using a self-lubricating device.
  • FIG. 1 is a cross-sectional view showing an example of a horizontal shaft single-stage pump provided with a bearing device according to an embodiment of the present invention.
  • a horizontal axis single-stage pump 100 as a rotating machine shown in FIG. 1 has an impeller 2 and a rotating shaft 1 to which the impeller 2 is fixed.
  • the rotating shaft 1 extends horizontally.
  • One end of the rotary shaft 1 is connected to a drive machine such as an electric motor (not shown), and the rotary shaft 1 and the impeller 2 are rotated by this drive machine.
  • the rotating shaft 1 is rotatably supported by bearing devices 9 and 9 provided in the vicinity of both ends thereof.
  • the impeller 2 is disposed in the pump casing 5.
  • the pump casing 5 shown in FIG. 1 has a spiral chamber 5a therein, and the impeller 2 is disposed in the spiral chamber 5a.
  • a liquid such as water is sucked from the suction port 3
  • the pressure of the liquid is increased by the action of the impeller 2 and the spiral chamber 5 a, and the liquid is discharged from the discharge port 4. It is.
  • the impeller 2 in the illustrated example has a double suction structure for sucking liquid from both sides.
  • the caps 2A and 2B are attached to the liquid inlet of the impeller 2, respectively.
  • a thrust force due to a pressure difference can be applied in one direction of the rotating shaft 1 and the rotating shaft 1 can be rotated in a stable state.
  • This thrust force is supported by a thrust bearing unit 9A of the bearing device 9.
  • the thrust bearing unit 9 ⁇ / b> A is a double row rolling bearing that can receive a thrust force acting in both directions of the rotary shaft 1. Since a thrust force acts on the thrust bearing unit 9A as a load, it is necessary to supply an appropriate amount of lubricating oil to the thrust bearing unit 9A and cool the thrust bearing unit 9A while lubricating it.
  • two radial bearing units 9B and 9B are disposed in the vicinity of both end portions of the rotary shaft 1.
  • the rotary shaft 1 is supported by a total of three bearing units including these two radial bearing units 9B and 9B and one thrust bearing unit 9A.
  • sleeve-type slide bearings are used for the radial bearing units 9B, 9B.
  • the sleeve-type radial bearing units 9B, 9B include a conventional self-lubricating oil supply device provided with an oil ring 20. Is adopted. The configuration of the present invention described later is applied to the thrust bearing unit 9A.
  • FIG. 2 is a cross-sectional view showing an example of a horizontal multistage pump provided with a bearing device according to an embodiment of the present invention.
  • a horizontal axis multistage pump 100 as a rotating machine shown in FIG. 2 includes a plurality of impellers 2 and a rotary shaft 1 to which the impellers 2 are fixed.
  • the rotating shaft 1 extends horizontally.
  • the plurality of impellers 2 are arranged in series on the rotating shaft 1, and a diffuser 6 is disposed so as to surround each of the impellers 2.
  • One end of the rotary shaft 1 is connected to a drive machine such as an electric motor (not shown), and the rotary shaft 1 and the impeller 2 are rotated by this drive machine.
  • the rotating shaft 1 is rotatably supported by bearing devices 9 and 9 provided in the vicinity of both ends thereof.
  • the impeller 2 is disposed in the pump casing 5.
  • liquid such as water is sucked from the suction port 3, and the pressure of the liquid is increased by the action of the impeller 2 and the diffuser 6, and the liquid is discharged from the discharge port 4. Is exhaled from.
  • the plurality of impellers 2 are arranged in the same direction, the thrust force generated by the pressure difference between the adjacent impellers 2 is overlapped by the number of impellers 2, and a large thrust force is generated.
  • This thrust force is offset by the balance device 7 provided in the horizontal multistage pump 100, but a certain amount of thrust force remains during transient operation. This residual thrust force is supported by the thrust bearing unit 9A of the bearing device 9.
  • the thrust bearing unit 9 ⁇ / b> A is a double row rolling bearing that can receive a thrust force acting in both directions of the rotary shaft 1. Since the residual thrust force acts on the thrust bearing unit 9A as a load, it is necessary to supply an appropriate amount of lubricating oil to the thrust bearing unit 9A and cool the thrust bearing unit 9A while lubricating it.
  • two radial bearing units 9B and 9B are disposed in the vicinity of both end portions of the rotary shaft 1.
  • the rotary shaft 1 is supported by a total of three bearing units including these two radial bearing units 9B and 9B and one thrust bearing unit 9A.
  • sleeve-type slide bearings are used for the radial bearing units 9B, 9B.
  • the sleeve-type radial bearing units 9B, 9B include a conventional self-lubricating oil supply device provided with an oil ring 20. Is adopted.
  • the configuration of the present invention described later is applied to the thrust bearing unit 9A.
  • the configuration of the bearing devices 9 and 9 disposed in the vicinity of both ends of the rotary shaft 1 is the same as that of the horizontal axis single-stage pump shown in FIG.
  • the rotary shaft 1 extends through the pump casing 5 in both cases of the horizontal shaft pump 100 shown in FIGS.
  • a gap between the rotary shaft 1 and the pump casing 5 is sealed by shaft sealing devices 8 and 8 such as mechanical seals. Therefore, the liquid pressurized by the impeller 2 does not enter the bearing devices 9 and 9.
  • FIG. 3 is a cross-sectional view showing the structure of a self-lubricating bearing device according to an embodiment of the present invention.
  • the bearing device 9 includes a thrust bearing unit 9 ⁇ / b> A that supports the axial load and the radial load of the horizontally extending rotating shaft 1, and a radial bearing unit that supports the radial load of the rotating shaft 1. 9B.
  • a double-row rolling bearing provided with two angular ball bearings is used for the thrust bearing unit 9A of the present embodiment.
  • a lubricating oil storage tank 10 is disposed below the thrust bearing unit 9A and the radial bearing unit 9B, and the oil level of the lubricating oil stored in the lubricating oil storage tank 10 is indicated by a dotted line with a reference numeral 10A. ing.
  • the amount of lubricating oil is controlled so that the oil level 10A in the lubricating oil storage tank 10 is constant.
  • a cooling jacket 27 is provided below the lubricating oil storage tank 10, and the lubricating oil in the lubricating oil storage tank 10 is cooled by the coolant flowing through the cooling jacket 27.
  • an air cooling structure with fins may be employed. Or it is good also as a structure which inserts a cooling fluid tube in the lubricating oil storage tank 10, and cools lubricating oil directly.
  • the bearing device 9 includes two oil rings 20 disposed adjacent to both sides of a thrust bearing unit 9A that is a double row rolling bearing.
  • the rotating shaft 1 has a reduced diameter portion 1A whose diameter is reduced, and this reduced diameter portion 1A is located at a predetermined position P between the thrust bearing unit 9A and the radial bearing unit 9B from the outer end of the rotating shaft 1. Extend to.
  • the diameter of the reduced diameter portion 1A is the same as the inner diameter of the inner ring on the rotation side of the double row rolling bearing constituting the thrust bearing unit 9A.
  • the thrust bearing unit 9A may be referred to as a double row rolling bearing 9A.
  • the bearing device 9 has two oil ring receivers 15 arranged in the reduced diameter portion 1A so as to sandwich the double row rolling bearing 9A.
  • the oil ring receiver 15 has an annular shape, and the inner diameter of the oil ring receiver 15 is the same as the inner diameter of the inner ring on the rotation side of the double row rolling bearing 9A.
  • An annular recess is formed on the outer peripheral surface of the oil ring receiver 15, and the oil ring 20 is supported in the annular recess.
  • the oil ring 20 is supported at a fixed position in the axial direction of the rotary shaft 1 by the oil ring receiver 15.
  • FIG. 4 is a cross-sectional view taken along line AA in FIG.
  • the oil ring 20 is rotatably supported by the oil ring receiver 15 through a gap 16 ⁇ / b> A formed in the fixing member 16 that fixes the outer ring of the double row rolling bearing 9 ⁇ / b> A.
  • the oil ring 20 is supported by the rotary shaft 1 via the oil ring receiver 15 in a state where the lower part is immersed in the lubricating oil stored in the lubricating oil storage tank 10 (see FIG. 3).
  • the oil ring 20 rotates in accordance with the rotation of the rotating shaft 1, thereby scooping up the lubricating oil stored in the lubricating oil storage tank 10.
  • the oil ring 20 may be made of a metal material such as brass, or may be made of a porous material such as sintered metal or ceramics. Further, various undulating shapes may be provided on the peripheral edge of the oil ring 20. The amount of lubricating oil that the oil ring 20 scoops up can be increased by the undulating shape.
  • Lubricating oil pumped up from the lubricating oil storage tank 10 to the oil ring 20 is supplied to the rotary shaft 1 via the oil ring receivers 15 adjacent to both sides in the axial direction of the double row rolling bearing 9A. Since the two oil rings 20 are respectively adjacent to both sides in the axial direction of the double row rolling bearing 9A composed of two angular ball bearings, the lubricating oil is supplied to the rotary shaft 1 from both sides of the double row rolling bearing 9A. Is supplied to the angular ball bearings constituting the double-row rolling bearing 9A. Therefore, unlike the prior art, one of the angular ball bearings is not preferentially supplied with the lubricating oil, and the lubricating oil is supplied evenly and stably in an appropriate amount to both the angular ball bearings.
  • FIG. 5 is a sectional view showing the structure of a self-lubricating bearing device according to another embodiment of the present invention
  • FIG. 6 is a partially broken perspective view of the thrust bearing unit 9A shown in FIG.
  • the thrust bearing unit 9 ⁇ / b> A of this embodiment includes two angular ball bearings 31, 32 arranged in series on the rotary shaft 1, and the angular ball bearings 31, 32.
  • This is a double-row rolling bearing having an annular spacer (spacer) 19 disposed therebetween.
  • the angular ball bearings 31 and 32 can receive both an axial load and a radial load of the rotary shaft 1.
  • annular oil ring receiver 15 Inside the spacer 19, there is an annular oil ring receiver 15 having an inner diameter that is the same as the inner diameter of the inner ring of the angular ball bearings 31 and 32, and an annular recess for supporting the oil ring 20 formed on the outer peripheral surface. Be placed.
  • the oil ring receiver 15 is fitted into the rotary shaft 1.
  • a space is formed between the spacer 19 and the oil ring receiver 15, and the oil ring 20 is passed through this space.
  • a gap extending in the circumferential direction is formed in the spacer 19, and the oil ring 20 passes through the gap to rotate the rotary shaft 1. Rotate with it.
  • the lubricating oil pumped up from the lubricating oil storage tank 10 to the oil ring 20 is supplied to the rotary shaft 1 via the oil ring receiver 15 provided between the two angular ball bearings 31 and 32. . Since the oil ring 20 is disposed between the angular ball bearings 31 and 32 constituting the double row rolling bearing 9A, the lubricating oil pumped up by the oil ring 20 travels along the rotating shaft 1 and is adjacent to the angular ball. The bearings 31 and 32 are supplied.
  • one of the angular ball bearings 31 and 32 is not preferentially supplied with the lubricating oil, and both the angular ball bearings 31 and 32 are evenly and stably lubricated in an appropriate amount. Is supplied.
  • the oil ring 20 is provided at the portion where the spacer 19 is disposed, even in the case of a double row rolling bearing in which three or more rolling bearings are arranged in the axial direction, the oil ring 20 is disposed between two adjacent bearings. Can be arranged. Therefore, it becomes possible to supply lubricating oil equally to each rolling bearing. Further, by combining the configuration of the embodiment shown in FIG. 3 and the configuration of the embodiment shown in FIG. 5, the lubricating oil can be supplied to the rolling bearing more evenly.
  • the bearing device 9 according to the embodiment of the present invention has been described using the bearing device of the horizontal shaft pump as an example.
  • this bearing device 9 can also be applied to rotating machines other than the horizontal shaft pump.
  • the bearing device 9 of the present invention can also be applied to a rotary machine such as a blower.
  • the present invention is applicable to a bearing device that can supply lubricating oil to a bearing appropriately. Further, the present invention can be used for a rotary machine such as a pump provided with such a bearing device.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rolling Contact Bearings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention se rapporte à un dispositif de palier pouvant apporter de manière appropriée un lubrifiant à un palier, et également à une machine rotative telle qu'une pompe qui est équipée d'un tel dispositif de palier. Le dispositif de palier (9) est équipé d'une double rangée de paliers à roulement (9A) qui reçoivent une charge agissant dans la direction de poussée d'un arbre rotatif (1), d'un réservoir de stockage de lubrifiant (10) positionné au-dessous de la double rangée de paliers de roulement (9A), et de bagues de graissage (20) qui sont supportées par l'arbre rotatif (1) et font remonter le lubrifiant stocké dans le réservoir de stockage de lubrifiant (10) quand l'arbre rotatif (1) tourne. Les bagues de graissage (20) sont positionnées des deux côtés de la double rangée de paliers à roulement (9A).
PCT/JP2016/071531 2015-08-05 2016-07-22 Dispositif de palier et machine rotative WO2017022517A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-155018 2015-08-05
JP2015155018A JP2017032115A (ja) 2015-08-05 2015-08-05 軸受装置および回転機械

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WO2017022517A1 true WO2017022517A1 (fr) 2017-02-09

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WO (1) WO2017022517A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110762026B (zh) * 2019-11-04 2021-06-15 中国船舶工业集团公司第七0八研究所 一种动力驱动轴系系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580598U (fr) * 1978-11-29 1980-06-03
US20110085753A1 (en) * 2009-10-09 2011-04-14 Dresser-Rand Company Auxiliary bearing system with oil ring for magnetically supported rotor system
WO2015098896A1 (fr) * 2013-12-26 2015-07-02 株式会社 荏原製作所 Dispositif de palier et pompe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580598U (fr) * 1978-11-29 1980-06-03
US20110085753A1 (en) * 2009-10-09 2011-04-14 Dresser-Rand Company Auxiliary bearing system with oil ring for magnetically supported rotor system
WO2015098896A1 (fr) * 2013-12-26 2015-07-02 株式会社 荏原製作所 Dispositif de palier et pompe

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