CN204267598U - With the returning type elastic support of film damper - Google Patents
With the returning type elastic support of film damper Download PDFInfo
- Publication number
- CN204267598U CN204267598U CN201420728405.2U CN201420728405U CN204267598U CN 204267598 U CN204267598 U CN 204267598U CN 201420728405 U CN201420728405 U CN 201420728405U CN 204267598 U CN204267598 U CN 204267598U
- Authority
- CN
- China
- Prior art keywords
- elastic support
- ball bearing
- type elastic
- returning type
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Classifications
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- 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
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- 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
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- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
- F16C27/045—Ball or roller bearings, e.g. with resilient rolling bodies with a fluid film, e.g. squeeze film damping
Landscapes
- Support Of The Bearing (AREA)
Abstract
The utility model proposes the returning type elastic support of band film damper.Support casing flange both sides and connect returning type elastic support and positioning cylinder respectively, afterbody is connected with positioning cylinder Spielpassung, cylindrical tube endoporus extends a step hole and to be connected ball bearing, ball bearing inner hole coupling shaft, be provided with stop ring on the left of ball bearing inner ring, have graphite-seal ring on the right side of ball bearing inner ring, the outer round surface of graphite-seal ring has the endoporus Spielpassung connection with it of sealing cover, sealing cover is fixedly connected with positioning cylinder tailing screw flight, is provided with limited ring on the left of ball bearing outer shroud.By film damper and elastic support parallel connection, effectiveness in vibration suppression is better, and structure is also compacter, is conducive to small mechanical equipment and uses; Returning type bearing support makes the length of whole equipment shorter, saves space; Squeeze film damper inner ring is equipped with oil groove and flinger ring, film stability is good, is suitable for the rotor that amount of unbalance is large; Adopt cantilever structure, screw fastening, structure is simple, reliable, easy accessibility.
Description
Technical field
The utility model relates to the Combined elastic supporting that a kind of rotating machinery uses, specifically a kind of returning type elastic support with film damper.
Background technique
Along with the development of China's science and technology, the various rotating machineries constantly army of being applied to that China develops voluntarily, the each field of the people, as gas turbine, steam turbine, the equipment such as compressor, but vibration problem when the said equipment runs also becomes increasingly conspicuous, from the beginning of this century, coming from the yielding support of aeroengine and squeeze film damping shock absorption technology starts constantly to be applied to peculiar to vessel, land unit, achieve good effect, but for some rotor weight weight, the unit that unbalanced force is large, independent employing elastic support or film damper (SFD) cannot reach desirable effectiveness in vibration suppression, and traditional squirrel-cage elastic support adopts cantilever structure usually, one end is clamped, the other end and bearing fit, axial length is longer, thus add the length of whole support case, the compactedness designing requirement of the middle-size and small-size machinery of part can not be met completely, therefore, the two to be combined and the elastic support structure with compact form has prior use value,
In recent years, China's all trades and professions are also devoted to the research of yielding support and film damper, but are confined to independent a kind of structure more, seldom consider; In addition, for the use of yielding support and film damper, high reliability and compactedness are also important indexs, and various labyrinth may in use produce more fault and cause equipment too heavy.
Summary of the invention
The purpose of this utility model is the vibration for reducing rotary machine rotor, regulate resonance speed, simultaneously in engineering design by adopting compact structure form more, device length can be shortened further, increase the stability of structure, meet the compactedness designing requirement of rotating machinery.
The technical solution of the utility model is: the returning type elastic support of band film damper, comprise axle and support casing, support casing flange both sides and connect returning type elastic support and positioning cylinder respectively, returning type elastic support is cantilever type cage-shaped structure, middle shell portion is made up of 32 cage bars, returning type elastic support afterbody is cylindrical tube, cylindrical tube cylindrical is connected with positioning cylinder Spielpassung, cylindrical tube endoporus extends a step hole, be connected in step hole ball bearing, ball bearing inner hole coupling shaft, be provided with stop ring on the left of ball bearing inner ring to be threaded axle, on the right side of ball bearing inner ring and between pillow block rank, graphite-seal ring is installed, the outer round surface of graphite-seal ring has the endoporus Spielpassung connection with it of sealing cover, sealing cover is fixedly connected with positioning cylinder tailing screw flight, be provided with limited ring on the left of ball bearing outer shroud to be threaded returning type elastic support.
Described returning type elastic support afterbody is cylindrical tube, and cylindrical shell outer cylinder surface has three road scrobicular rings: be positioned at the flinger ring of both sides and be positioned at middle oil groove.
Returning type elastic support there are 36 inclined holes be communicated with space, ball bearing both sides.
The utility model has following beneficial effect: by film damper and elastic support parallel connection, effectiveness in vibration suppression is better, and structure is also compacter, is conducive to small mechanical equipment and uses; Returning type bearing support makes the length of whole equipment shorter, saves space; Squeeze film damper inner ring is equipped with oil groove and flinger ring, film stability is good, is suitable for the rotor that amount of unbalance is large; Adopt cantilever structure, screw fastening, structure is simple, reliable, easy accessibility.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
1-axle in figure; 2-ball bearing; 3-oil groove; 4-flinger ring; 5-positioning cylinder; 6-supports casing; 7-returning type elastic support; 8-limited ring; 9-graphite-seal ring; 10-stop ring; 11-sealing cover; 12-screw; 13-is with the screw of locking plate.
embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, with the returning type elastic support of film damper, comprise axle 1 and support casing 6, support casing 6 flange both sides and connect returning type elastic support 7 and positioning cylinder 5 respectively, returning type elastic support 7 is cantilever type cage-shaped structure, middle shell portion is made up of 32 cage bars, returning type elastic support 7 afterbody is cylindrical tube, cylindrical tube cylindrical is connected with positioning cylinder 5 Spielpassung, cylindrical tube endoporus extends a step hole, be connected in step hole ball bearing 2, ball bearing 2 inner hole coupling shaft 1, be provided with stop ring 10 on the left of ball bearing 2 inner ring to be threaded axle 1, on the right side of ball bearing 2 inner ring and between axle 1 step, graphite-seal ring 9 is installed, the outer round surface of graphite-seal ring 9 has the endoporus Spielpassung connection with it of sealing cover 11, sealing cover 11 is fixedly connected with positioning cylinder 5 tailing screw flight, be provided with limited ring 8 on the left of ball bearing 2 outer shroud to be threaded returning type elastic support 7.
Described returning type elastic support 7 afterbody is cylindrical tube, and cylindrical shell outer cylinder surface has three road scrobicular rings: be positioned at the flinger ring 4 of both sides and be positioned at middle oil groove 3.
Returning type elastic support 7 there are 36 inclined holes be communicated with space, ball bearing 2 both sides, for being imported on the right side of bearing by the lubricating oil entered from cage bar.
When rotor operates, lubricant oil enters in positioning cylinder 5 by fuel supply line, then the nozzle through positioning cylinder inside flows in the oil groove in elastic support, oil film is formed in the small gaps of elastic support outer surface and positioning cylinder internal surface, due to the existence of flinger ring 4, improve the stability of oil film, finally, residue lubricating oil passes through the gap of flinger ring respectively from two side inflow bearing bores, plays the effect of Cooling and Lubricator bearing.During installation, oil clearance is 0.1-0.15mm.
When motor normally runs, unbalanced force is delivered to the inner ring of bearing 2 by the axle journal of rotor 1, is then passed on bearing case by elastic support 7 again, is finally delivered to motor underframe and support.In whole process, during film damper (part 5,7,4 composition) on yielding support, vibrate through significantly decaying, then be delivered on casing, vibration values can meet design requirement; And elastic support is mainly used in the critical speed of rotation of design and experimental stage adjustment rotor, to avoid working speed.
Returning type elastic support with film damper has been applied to GT25000 series gas turbine, accumulative operation was more than 3000 hours, running state is good, there is not any fault, this structure is adopted to make motor length shorten 60mm, when amount of unbalance is 30g.cm, complete machine oscillation, lower than 12mm/s, meets general requirement.
Meanwhile, this structure, also for test stand rotor supports, by adjustment oil clearance, is obtaining effectiveness in vibration suppression in various degree through critical speed of rotation.
Claims (3)
1. the returning type elastic support with film damper, comprise axle (1) and support casing (6), it is characterized in that: support casing (6) flange both sides and connect returning type elastic support (7) and positioning cylinder (5) respectively, returning type elastic support (7) is cantilever type cage-shaped structure, middle shell portion is made up of 32 cage bars, returning type elastic support (7) afterbody is cylindrical tube, cylindrical tube cylindrical is connected with positioning cylinder (5) Spielpassung, cylindrical tube endoporus extends a step hole, be connected in step hole ball bearing (2), ball bearing (2) inner hole coupling shaft (1), be provided with stop ring (10) on the left of ball bearing (2) inner ring to be threaded axle (1), on the right side of ball bearing (2) inner ring and between axle (1) step, graphite-seal ring (9) is installed, the outer round surface of graphite-seal ring (9) has the endoporus Spielpassung connection with it of sealing cover (11), sealing cover (11) is fixedly connected with positioning cylinder (5) tailing screw flight, be provided with limited ring (8) on the left of ball bearing (2) outer shroud to be threaded returning type elastic support (7).
2. the returning type elastic support of band film damper according to claim 1, it is characterized in that: described returning type elastic support (7) afterbody is cylindrical tube, and cylindrical shell outer cylinder surface has three road scrobicular rings: be positioned at the flinger ring (4) of both sides and be positioned at middle oil groove (3).
3. the returning type elastic support of band film damper according to claim 1, is characterized in that: returning type elastic support (7) has 36 inclined holes be communicated with ball bearing (2) space, both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728405.2U CN204267598U (en) | 2014-11-28 | 2014-11-28 | With the returning type elastic support of film damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728405.2U CN204267598U (en) | 2014-11-28 | 2014-11-28 | With the returning type elastic support of film damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267598U true CN204267598U (en) | 2015-04-15 |
Family
ID=52802469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420728405.2U Withdrawn - After Issue CN204267598U (en) | 2014-11-28 | 2014-11-28 | With the returning type elastic support of film damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267598U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358820A (en) * | 2014-11-28 | 2015-02-18 | 哈尔滨广瀚燃气轮机有限公司 | Back-turning type elastic supporter with oil film damper |
| CN108691893A (en) * | 2017-04-10 | 2018-10-23 | 清华大学 | Aero-engine and its squirrel-cage bearing arrangement |
| CN110360271A (en) * | 2019-08-23 | 2019-10-22 | 中国船舶重工集团公司第七0三研究所 | A kind of cantilever type double-layer squeeze film damping shock absorber |
| CN110552748A (en) * | 2019-09-22 | 2019-12-10 | 中国航发沈阳发动机研究所 | Rotor supporting structure |
| CN111911531A (en) * | 2020-07-29 | 2020-11-10 | 中国航发湖南动力机械研究所 | Return type elastic supporting structure and engine |
| CN114607700A (en) * | 2022-03-25 | 2022-06-10 | 中国航发哈尔滨东安发动机有限公司 | Vibration reduction and lubrication device suitable for aeroengine bearing |
| CN114877003A (en) * | 2022-04-02 | 2022-08-09 | 哈尔滨工业大学 | Novel squeeze film damper with self-adaptive check valve in oil supply hole |
-
2014
- 2014-11-28 CN CN201420728405.2U patent/CN204267598U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358820A (en) * | 2014-11-28 | 2015-02-18 | 哈尔滨广瀚燃气轮机有限公司 | Back-turning type elastic supporter with oil film damper |
| CN108691893A (en) * | 2017-04-10 | 2018-10-23 | 清华大学 | Aero-engine and its squirrel-cage bearing arrangement |
| CN108691893B (en) * | 2017-04-10 | 2019-09-20 | 清华大学 | Aero-engine and its squirrel-cage bearing arrangement |
| CN110360271A (en) * | 2019-08-23 | 2019-10-22 | 中国船舶重工集团公司第七0三研究所 | A kind of cantilever type double-layer squeeze film damping shock absorber |
| CN110360271B (en) * | 2019-08-23 | 2021-09-14 | 中国船舶重工集团公司第七0三研究所 | Cantilever type double-layer squeeze film damping shock absorber |
| CN110552748A (en) * | 2019-09-22 | 2019-12-10 | 中国航发沈阳发动机研究所 | Rotor supporting structure |
| CN111911531A (en) * | 2020-07-29 | 2020-11-10 | 中国航发湖南动力机械研究所 | Return type elastic supporting structure and engine |
| CN111911531B (en) * | 2020-07-29 | 2021-12-24 | 中国航发湖南动力机械研究所 | Return type elastic supporting structure and engine |
| CN114607700A (en) * | 2022-03-25 | 2022-06-10 | 中国航发哈尔滨东安发动机有限公司 | Vibration reduction and lubrication device suitable for aeroengine bearing |
| CN114607700B (en) * | 2022-03-25 | 2023-11-24 | 中国航发哈尔滨东安发动机有限公司 | Vibration reduction and lubrication device suitable for aeroengine bearing |
| CN114877003A (en) * | 2022-04-02 | 2022-08-09 | 哈尔滨工业大学 | Novel squeeze film damper with self-adaptive check valve in oil supply hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150415 Effective date of abandoning: 20160323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |