CN109707787A - A kind of squeeze film damper - Google Patents
A kind of squeeze film damper Download PDFInfo
- Publication number
- CN109707787A CN109707787A CN201910013657.4A CN201910013657A CN109707787A CN 109707787 A CN109707787 A CN 109707787A CN 201910013657 A CN201910013657 A CN 201910013657A CN 109707787 A CN109707787 A CN 109707787A
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- China
- Prior art keywords
- spring
- damper
- bearing shell
- oil
- groove
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Abstract
The present invention provides a kind of squeeze film damper, it is circular ring shape, its outer surface is equipped with oil-feed tank, its inner surface is circumferentially uniformly distributed four spring grooves, and spring groove is for installing spring, and damper is within spring groove for installing bearing shell, aperture is equipped between the middle part and oil-feed tank of each spring groove, the lubrication oil supply for guaranteeing internal bearing shell there are two fuel feed hole, fuel feed hole connection oil-feed tank is set in each 45 degree of the direction in damper upper end or so.Structure of the invention compact and reasonable, damping vibration attenuation excellent effect, there is stiffness variable simultaneously, the spring installed in 4 spring grooves is different, different rigidity values can be provided in four direction, it can also be adapted to different rotor operating conditions, to reach better effectiveness in vibration suppression by the amount of change spring to change rigidity provided by damper.
Description
Technical field
The present invention relates to damper designs fields, and in particular to a kind of squeeze film damper.
Background technique
For high-speed rotor system, the influence of vibration is and its important.Especially aero-engine, industrial steam turbine,
Key equipment in the modern industries such as centrifugal compressor, due to its own revolving speed height, the reasons such as rotor eccentricity are easier to vibrate
Biggish situation.If be not controlled to it, equipment fault or badly damaged accident can occur because vibration is excessive.
Squeeze film damper (SFD) is the current first choice for inhibiting rotor oscillation.Existing squeeze film damper is most
Structure is complicated, and volume is larger, while the damping provided is limited；And passive type squeeze film damper may only provide fixed
Damping, for the various working of rotor, the effectiveness in vibration suppression of fixed damping is not satisfactory.
Summary of the invention
In view of the defects existing in the prior art, compact-sized it is an object of the present invention to provide a kind of squeeze film damper
Rationally, damping vibration attenuation effect is more excellent while having stiffness variable.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of squeeze film damper, damper are circular ring shape, and outer surface is equipped with oil-feed tank, and inner surface circumferentially uniformly divides
Four spring grooves of cloth, inner surface is machined with rough surface in spring groove, and convenient for installing spring in spring groove, damper is in spring
For installing bearing shell within slot, aperture is equipped between the middle part and oil-feed tank of each spring groove, it is each in damper upper end or so
45 degree of direction sets the lubrication oil supply for guaranteeing internal bearing shell there are two fuel feed hole, fuel feed hole connection oil-feed tank.
Further, the spring groove is circumferentially uniformly distributed, and perimeter chamber angle is 65 degree.
Further, the damper and bearing shell are clearance fit, rubber groove are set in the spring groove two sides of damper, in rubber
Adhesive tape is added in glue groove for circumferentially positioned, prevent when the rotor rotates bearing shell rotate.
Further, the spring one end is connected with damper springs slot, and the other end is free, is operated according to bearing shell in rotor
The vibration that occurs in the process and so that spring is generated stretching motion；The spring installed in 4 spring grooves is different, then in four direction
Different rigidity values, or the quantity by changing spring are provided to change rigidity provided by damper, adapts to different rotors
Operating condition, to reach better effectiveness in vibration suppression.
Compared with prior art, the beneficial effects of the present invention are:
Squeeze film damper of the present invention can provide different rigidity values for rotor-support-foundation system, be adapted to different rotor works
Condition, to reach better effectiveness in vibration suppression.
Detailed description of the invention
Fig. 1 is squeeze film damper sectional front view of the present invention.
Fig. 2 is damper top view.
Fig. 3 is damper section left view.
Fig. 4 is bearing shell schematic diagram.
Fig. 5 is assembly overall schematic.
Specific embodiment
With reference to the accompanying drawing, the embodiment of the present invention is described in detail.
As shown in Figure 1, Figure 2 and Figure 4, a kind of squeeze film damper is circular ring shape, and outer surface is equipped with oil-feed tank 4,
Its inner surface is circumferentially uniformly distributed four spring grooves 1, and inner surface is machined with rough surface 5 in spring groove 1, convenient in spring groove
Spring 8 is installed in 1, damper within spring groove 1 for installing bearing shell 9, the middle part of each spring groove 1 and oil-feed tank 4 it
Between be equipped with aperture 3, set in each 45 degree of the direction in damper upper end or so there are two fuel feed hole 2,2 connection oil-feed tank 4 of fuel feed hole, guarantor
Demonstrate,prove the lubrication oil supply of internal bearing shell 9.
The spring groove 1 is circumferentially uniformly distributed, and perimeter chamber angle is 65 degree.
As shown in figure 3, the damper and bearing shell 9 are clearance fit, 2mm width is set in 1 two sides of spring groove of damper
Rubber groove 6, adhesive tape is added in rubber groove 6 for circumferentially positioned, prevent when the rotor rotates bearing shell 9 rotate.
As shown in figure 5, described 8 one end of spring is connected with damper springs slot 1, the other end is free, according to bearing shell 9 in rotor
The vibration that occurs in operation process and so that spring 8 is generated stretching motion；The spring 8 installed in 4 spring grooves 1 is different, then exists
Four direction provides different rigidity values, or the quantity by changing spring 8 to change rigidity provided by damper, adapts to not
Same rotor operating condition, to reach better effectiveness in vibration suppression.It simultaneously when spring damages, can replace at any time, improve damping
The service life of device reduces cost.
Claims (4)
1. a kind of squeeze film damper, which is characterized in that damper is circular ring shape, and outer surface is equipped with oil-feed tank (4), in
Surface is circumferentially uniformly distributed four spring grooves (1), and inner surface is machined with rough surface (5) in spring groove (1), convenient in spring
Spring (8) are installed in slot (1), damper is used to install bearing shell (9) within spring groove (1), at the middle part of each spring groove (1)
Between oil-feed tank (4) be equipped with aperture (3), each 45 degree of the direction in damper upper end or so set there are two fuel feed hole (2), oil inlet
Hole (2) connection oil-feed tank (4) guarantees the lubrication oil supply of internal bearing shell (9).
2. a kind of squeeze film damper according to claim 1, which is characterized in that the spring groove (1) is circumferentially equal
Even distribution, perimeter chamber angle are 65 degree.
3. a kind of squeeze film damper according to claim 1, which is characterized in that the damper is with bearing shell (9)
Clearance fit sets rubber groove (6) in spring groove (1) two sides of damper, and adhesive tape is added in rubber groove (6) for circumferential fixed
Position, prevent when the rotor rotates bearing shell (9) rotate.
4. a kind of squeeze film damper according to claim 1, which is characterized in that described spring (8) one end and damping
Device spring groove (1) is connected, and the other end is free, produces spring (8) according to the vibration that bearing shell (9) occurs in rotor operation process
Raw stretching motion；The spring (8) installed in 4 spring grooves (1) is different, then different rigidity values is provided in four direction, or
Quantity by changing spring (8) adapts to different rotor operating conditions, to change rigidity provided by damper to reach better
Effectiveness in vibration suppression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013657.4A CN109707787A (en) | 2019-01-08 | 2019-01-08 | A kind of squeeze film damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910013657.4A CN109707787A (en) | 2019-01-08 | 2019-01-08 | A kind of squeeze film damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707787A true CN109707787A (en) | 2019-05-03 |
Family
ID=66260857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910013657.4A Pending CN109707787A (en) | 2019-01-08 | 2019-01-08 | A kind of squeeze film damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707787A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301082A (en) * | 2020-03-19 | 2020-06-19 | 北京汽车股份有限公司 | Bush assembly and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1192354A (en) * | 1966-06-14 | 1970-05-20 | Nat Res Dev | Gas-lubricated Shaft and Bearing Assembly |
| US5738445A (en) * | 1997-02-21 | 1998-04-14 | Delaware Capital Formation, Inc. | Journal bearing having vibration damping elements |
| EP1528272A1 (en) * | 2002-05-02 | 2005-05-04 | Dresser-Rand Company | Assembly with an elastically mounted bearing with an oil damper and a method of manufacturing thereof |
| CN104343719A (en) * | 2013-07-23 | 2015-02-11 | 沈阳透平机械股份有限公司 | Double oil film damping bearing with elastic pad plate structure and machining method thereof |
-
2019
- 2019-01-08 CN CN201910013657.4A patent/CN109707787A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1192354A (en) * | 1966-06-14 | 1970-05-20 | Nat Res Dev | Gas-lubricated Shaft and Bearing Assembly |
| US5738445A (en) * | 1997-02-21 | 1998-04-14 | Delaware Capital Formation, Inc. | Journal bearing having vibration damping elements |
| EP1528272A1 (en) * | 2002-05-02 | 2005-05-04 | Dresser-Rand Company | Assembly with an elastically mounted bearing with an oil damper and a method of manufacturing thereof |
| CN104343719A (en) * | 2013-07-23 | 2015-02-11 | 沈阳透平机械股份有限公司 | Double oil film damping bearing with elastic pad plate structure and machining method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301082A (en) * | 2020-03-19 | 2020-06-19 | 北京汽车股份有限公司 | Bush assembly and vehicle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190503 |
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| RJ01 | Rejection of invention patent application after publication |