CN207661062U - A kind of elastic ring squeeze film damper with special-shaped aperture - Google Patents
A kind of elastic ring squeeze film damper with special-shaped aperture Download PDFInfo
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- CN207661062U CN207661062U CN201721857851.3U CN201721857851U CN207661062U CN 207661062 U CN207661062 U CN 207661062U CN 201721857851 U CN201721857851 U CN 201721857851U CN 207661062 U CN207661062 U CN 207661062U
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- elastic ring
- damper
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- ring
- squeeze film
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Abstract
The utility model is related to a kind of film dampers, more particularly to a kind of elastic ring squeeze film damper with special-shaped aperture, including damper outer shroud, elastic ring and damper inner ring, elastic ring is between damper inner ring and damper outer shroud, elastic ring is equipped with special-shaped circulation aperture, and the surfaces externally and internally of elastic ring is equipped with the boss being interspersed；The width of boss is 2nd/1st/50th to 50 of entire elastic ring arc length；The end bottom of damper inner ring and elastic ring is provided with semicircle orifice, and semicircle orifice is for limiting relative rotation between the two by rotation stop positioning bolt.Elastic ring structure with special-shaped pore structure and distribution can be effectively improved the lubrication state of oil film in damper, to improve the stability of elastic ring squeeze film damper work by increasing through-flow aperture in elastic ring surface；Pass and small pore size distribution by optimization design can be effectively increased throttle, to improve the performance of damper.
Description
Technical field
The utility model is related to a kind of film dampers, and in particular to a kind of elastic circular extruding oil with special-shaped aperture
Film damper.
Background technology
Since six the seventies of twentieth century, with Aeronautics and Astronautics and the day of ship's powerplant energy density, specific power
Benefit improves, rotor-support-foundation system needs to stablize, reliable work at higher rotational speeds, thus stability to rotor-support-foundation system and can
By property, more stringent requirements are proposed.Squeeze film damper can significantly reduce vibration amplitude of rotor when excessively critical, make
The rotating machinery of high-speed cruising can be steadily quickly by critical and reach its working speed, in gas turbine and aviation
It has a wide range of applications on engine.Traditional squeeze film damper is larger and by the transient state compared with big load in quiet bias
It is embodied when impact stronger non-linear so that bistable state occurs in system, and the non-linear behaviors such as non-coordinating precession are to endanger
The stable operation of system.The elastic circular structure of special designing is added in conventional damper so that damper has centainly oneself
Self-aligning capability improves the stability of rotor-support-foundation system so as to effectively improve the non-linear of conventional damper so that oil film hinders
Buddhist nun's device is more widely applied.
Invention content
The purpose of this utility model is to provide a kind of elastic ring squeeze film damper with special-shaped pore structure, work
In the process elastic ring be suitable for rotor vibration occur corresponding deformation, absorb vibrational energy to reinforce its shock proof ability,
Improve the stability of damper；In addition there are rubbing actions between elastic ring and damper inner and outer rings, can improve damper
Damping capacity.
The technical solution adopted in the utility model is：A kind of elastic ring squeeze film damper with special-shaped aperture,
Including damper outer shroud, elastic ring and damper inner ring, the elastic ring is between damper inner ring and damper outer shroud, bullet
Property ring be equipped with special-shaped circulation aperture, the surfaces externally and internally of elastic ring is equipped with the boss being interspersed；Damper inner ring and damping
Device outer shroud is the tubular structure with greater stiffness.
Further, the pass of the special-shaped circulation aperture is flaring type, shrinkage type, plain edition or scaling type.
Further, the special-shaped circulation aperture is single-orifice type, axial diapsid, week in the surface distribution form of elastic ring
To diapsid or quadrifora.
Further, the width of the boss is 2nd/1st/50th to 50 of entire elastic ring arc length.
Further, the quantity of the elastic ring convex platform is 6 to 18.
Further, the height of the boss is 0.2 millimeter to 0.5 millimeter.
Further, the end bottom of the damper inner ring and elastic ring is provided with semicircle orifice, and semicircle orifice is used for by only
Turn positioning bolt and limits relative rotation between the two.
The beneficial effects of the utility model：Elastic ring structure with special-shaped pore structure and distribution, by elastic ring table
Face increases through-flow aperture, can be effectively improved the lubrication state of oil film in damper, to improve the resistance of elastic circular squeeze film
The stability of Buddhist nun's device work；On the other hand, it can be effectively increased throttle by the pass of optimization design and small pore size distribution,
To improve the performance of damper.The gas turbines related fields such as industry, naval vessel and aerospace are can be applied to, while can also be answered
For the high-speed rotating machine field with particular/special requirement, including military affairs, the energy, electric power, traffic, environmental protection etc..
Elastic ring is the tubular structure that interior outer lug boss is interspersed, between damper inner and outer ring, inner convex platform and resistance
The outer surface of Buddhist nun's device inner ring coordinates, and the inner surface of outer lug boss and outer race coordinates；Elastic ring surface has the small of special designing
Pore structure；Through-hole can be plain edition on elastic ring, can also be gradual shrinkage or flaring type, and pass parameters are according to the work of damper
It is designed as parameter；In single oil film section, the aperture on elastic ring is generally 1-4, and the distribution of the aperture of multiple quantity can
Can also be heterogeneous to be uniform；Elastic ring inner convex platform is coordinated with ring outer surface cooperation in damper using transition, bullet
Property the outer ring inner surface of ring outer lug boss and damper be clearance fit；The middle section of damper inner ring, damper outer shroud and elastic ring
Bottom opens up circular hole, and the relative rotation between three is limited by rotation stop positioning screw.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view of A in Fig. 1；
Fig. 3 is the structural schematic diagram of elastic ring in the utility model；
Fig. 4 is the structural schematic diagram of damper inner ring in the utility model；
Fig. 5 is the structural schematic diagram of flaring type opposite sex circulation aperture in embodiment two；
Fig. 6 is the structural schematic diagram of shrinkage type opposite sex circulation aperture in embodiment two；
Fig. 7 is the structural schematic diagram of plain edition opposite sex circulation aperture in embodiment two；
Fig. 8 is the structural schematic diagram of scaling type opposite sex circulation aperture in embodiment two；
Fig. 9 is that anisotropic circulation aperture is in single-orifice type distribution schematic diagram in embodiment three；
Figure 10 is that anisotropic circulation aperture is in axial diapsid distribution schematic diagram in embodiment three；
Figure 11 is that anisotropic circulation aperture is in circumferential diapsid distribution schematic diagram in embodiment three；
Figure 12 is that anisotropic circulation aperture is in quadrifora distribution schematic diagram in embodiment three.
Specific implementation mode：
Embodiment one
As shown in Figures 1 to 4, a kind of elastic ring squeeze film damper with special-shaped aperture, including outside damper
Ring 1, elastic ring 2 and damper inner ring 3, the elastic ring 2 is between damper inner ring 3 and damper outer shroud 1, elastic ring 2
It is equipped with special-shaped circulation aperture 4, the surfaces externally and internally of elastic ring 2 is equipped with the boss 5 being interspersed；Damper inner ring 3 and damping
Device outer shroud 1 is the tubular structure with greater stiffness；The quantity of 2 convex platform 5 of the elastic ring is 6 to 18；The boss 5
Height be 0.2 millimeter to 0.5 millimeter；The width of the boss 5 is 1/50th to 50 point of 2 arc length of entire elastic ring
Two；The end bottom of the damper inner ring 3 and elastic ring 2 is provided with semicircle orifice 6, and semicircle orifice 6 is used to position spiral shell by rotation stop
Bolt limits relative rotation between the two.
Embodiment two
As shown in Fig. 5 to Fig. 8, on the basis of embodiment one, the pass of the special-shaped circulation aperture 4 is flaring type, receives
Miniature, plain edition or scaling type.
Embodiment three
As shown in Fig. 9 to Figure 12, on the basis of embodiment one, the special-shaped circulation aperture 4 is on the surface of elastic ring 2 point
Cloth form is single-orifice type, axial diapsid, circumferential diapsid or quadrifora.
Shown damper outer shroud 1 is generally with mouse cage elastic conjunction, and damper inner ring 3 is by flanged joint on bearing block；
Setting circumferential oil supply tank in 3 surface of damper inner ring is simultaneously provided with oil supplying hole；The outer ring of the inner convex platform and damper inner ring 3 of elastic ring 2
Cooperation, outer lug boss and the inner ring of damper outer shroud 1 coordinate；The type of the special-shaped through-flow aperture 4 on 2 surface of elastic ring and distribution
It is selected according to design requirement；The inner convex platform of shown elastic ring is identical with outer lug boss number, and at least 4, inner convex platform and evagination
Platform is along the circumferential direction uniformly staggered；Cooperation between shown elastic ring 2 and damper inner ring 3 is coordinated using transition, elasticity
It is gap-matched between ring 2 and damper outer shroud 1.
Claims (7)
1. a kind of elastic ring squeeze film damper with special-shaped aperture, it is characterised in that：Including damper outer shroud（1）、
Elastic ring（2）And damper inner ring（3）, the elastic ring（2）Positioned at damper inner ring（3）With damper outer shroud（1）Between, bullet
Property ring（2）It is equipped with special-shaped circulation aperture（4）, elastic ring（2）Surfaces externally and internally be equipped with the boss that is interspersed（5）.
2. a kind of elastic ring squeeze film damper with special-shaped aperture according to claim 1, it is characterised in that：
The special-shaped circulation aperture（4）Pass be flaring type, shrinkage type, plain edition or scaling type.
3. a kind of elastic ring squeeze film damper with special-shaped aperture according to claim 1, it is characterised in that：
The special-shaped circulation aperture（4）In elastic ring（2）Surface distribution form be single-orifice type, axial diapsid, circumferential diapsid or
Quadrifora.
4. a kind of elastic ring squeeze film damper with special-shaped aperture according to any one of claim 1 to 3,
It is characterized in that：The boss（5）Width be entire elastic ring（2）2nd// 50th to 50 of arc length.
5. a kind of elastic ring squeeze film damper with special-shaped aperture according to any one of claim 1 to 3,
It is characterized in that：The elastic ring（2）Convex platform（5）Quantity be 6 to 18.
6. a kind of elastic ring squeeze film damper with special-shaped aperture according to any one of claim 1 to 3,
It is characterized in that：The boss（5）Height be 0.2 millimeter to 0.5 millimeter.
7. a kind of elastic ring squeeze film damper with special-shaped aperture according to any one of claim 1 to 3,
It is characterized in that：The damper inner ring（3）And elastic ring（2）End bottom be provided with semicircle orifice（6）, semicircle orifice（6）For
Relative rotation between the two is limited by rotation stop positioning bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857851.3U CN207661062U (en) | 2017-12-27 | 2017-12-27 | A kind of elastic ring squeeze film damper with special-shaped aperture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721857851.3U CN207661062U (en) | 2017-12-27 | 2017-12-27 | A kind of elastic ring squeeze film damper with special-shaped aperture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207661062U true CN207661062U (en) | 2018-07-27 |
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ID=62943526
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721857851.3U Active CN207661062U (en) | 2017-12-27 | 2017-12-27 | A kind of elastic ring squeeze film damper with special-shaped aperture |
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| CN (1) | CN207661062U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131421A (en) * | 2017-12-27 | 2018-06-08 | 哈尔滨广瀚燃气轮机有限公司 | A kind of elastic ring squeeze film damper with special-shaped aperture |
| CN116050193A (en) * | 2023-04-03 | 2023-05-02 | 中国航发四川燃气涡轮研究院 | Damping hole layout method for improving high cycle fatigue life of elastic ring |
-
2017
- 2017-12-27 CN CN201721857851.3U patent/CN207661062U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131421A (en) * | 2017-12-27 | 2018-06-08 | 哈尔滨广瀚燃气轮机有限公司 | A kind of elastic ring squeeze film damper with special-shaped aperture |
| CN116050193A (en) * | 2023-04-03 | 2023-05-02 | 中国航发四川燃气涡轮研究院 | Damping hole layout method for improving high cycle fatigue life of elastic ring |
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