CN109578087A - A kind of brush seal structure suitable for rotor bidirectional rotation - Google Patents
A kind of brush seal structure suitable for rotor bidirectional rotation Download PDFInfo
- Publication number
- CN109578087A CN109578087A CN201910025055.0A CN201910025055A CN109578087A CN 109578087 A CN109578087 A CN 109578087A CN 201910025055 A CN201910025055 A CN 201910025055A CN 109578087 A CN109578087 A CN 109578087A
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- China
- Prior art keywords
- rotor
- unilateral bearing
- small
- big
- stator
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a kind of brush seal structures suitable for rotor bidirectional rotation, it include: stator, four-point contact ball, front apron, fusion welded zone, rear baffle, brush wire bundle, belt wheel, small unilateral bearing, big unilateral bearing and rotor, wherein, the front apron and rear baffle are fixed by fusion welded zone, the root of the brush wire bundle is fixed on fusion welded zone, free end is bonded with rotor, four-point contact ball interference is fixed between fusion welded zone and stator, the rear end of rear baffle, which vertically connects, stretches out plate, stretch out plate, small unilateral bearing, belt wheel, rotor is successively keyed, big unilateral bearing key connection is in stator and stretches out between plate, the rotation direction that the small unilateral bearing and big unilateral bearing allow is opposite, and the steering of small unilateral bearing permission is the direction that rotor rotates forward.The brush seal structure is suitable for the bidirectional rotation of rotor, can prevent brush wire bundle from damaging because of rotor reversion, extend the service life of brush filament.
Description
Technical field
The present invention relates to a kind of sealing structures applied in rotating machinery, specifically provide a kind of two-way suitable for rotor
The brush seal structure of rotation.
Background technique
Brush seal is the critical component of the rotating machineries such as aero-engine, steam turbine, compressor.Relative to traditional fan
Palace sealing, brush seal not only have preferable sealing characteristics, additionally it is possible to the moment radial deformation or eccentric motion of rotor are adapted to,
In addition, the brush filament of brush seal and rotor form flexible contact, the vibration characteristics of rotor-support-foundation system can be improved, guarantee unit operation
Safety, therefore brush seal is widely used in the rotating machinery of the industry fields such as aerospace, electric power, petrochemical industry.
Brush seal is by front panel, rear panel and is sandwiched in the brush filament that highly dense alloy fine wire between the two forms
Shu Zucheng, brush wire bundle have certain inclination angle along rotor direction of rotation, and inclined brush filament can permit rotor radial bounce, with rotor
After Interference contact, permanent performance loss, the brush filament phase of brush seal will not occur as labyrinth seal is as honeycomb seal
It is regularly arranged by certain tilt angle to the direction of rotation of rotor, it is possible to reduce the abrasion of brush filament makes brush filament be more easily adapted to conform to turn
The foozle of son and thermal deformation etc., and rebound rapidly after rotor moment substantially radial displacement, keep seal clearance constant.It grinds
Study carefully show brush seal as a kind of contact dynamic sealing, the flexibility of brush wire bundle ensure that the instantaneous circular runout of rotor when
Deformability and tracing ability can be presented in brush wire bundle.
In general, the brush filament of brush seal and rotor surface are in 45 ° of inclinations angle, brush filament and rotor surface interference are filled when installation
Match, elastic conjunction to generate frictional force between brush wire bundle and rotor, in actual use, it is desirable that unidirectional rotor rotation, once
The huge frictional force of rotor reversion, rotor and brush filament interfascicular will cause irreversible damage to brush filament.There is presently no be directed to
Rotor reversion causes the reasonable solution of brush filament damage and proposition.
Therefore, how existing brush seal structure is improved, so that still may be used in the case where rotor inverts
With the use cost for guaranteeing that brush wire bundle is intact, extending the service life of brush filament, reducing brush filament, it is urgently to be resolved to become people
Problem.
Summary of the invention
In consideration of it, the purpose of the present invention is to provide a kind of brush seal structure suitable for rotor bidirectional rotation, with solution
The problem of certainly existing brush seal structure will cause the damage of brush filament in the case where rotor inverts.
Present invention provide the technical scheme that a kind of brush seal structure suitable for rotor bidirectional rotation, comprising: quiet
Son, four-point contact ball, front apron, fusion welded zone, rear baffle, brush wire bundle, belt wheel, small unilateral bearing, big unilateral bearing and turn
Son, wherein the front apron and rear baffle are fixed by fusion welded zone, and the root of the brush wire bundle is fixed on fusion welded zone, freely
End is bonded with rotor, and four-point contact ball interference is fixed between fusion welded zone and stator, and the rear end of rear baffle, which vertically connects, stretches
Ejecting plate, the periphery of small unilateral bearing and the inner circumferential for stretching out plate are keyed, and the inner circumferential of small unilateral bearing and the periphery of belt wheel are keyed,
The left and right sides of small unilateral bearing is fixed by the annular convex platform stretched out on plate and small c-type snap ring, the inner circumferential of belt wheel and rotor
Periphery key connection, the periphery of big unilateral bearing and the inner circumferential of stator are keyed, the inner circumferential of big unilateral bearing and the periphery for stretching out plate
The left and right sides of key connection, big unilateral bearing is fixed by the annular convex platform stretched out on plate and stator and big c-type snap ring, described small
Rotation direction that unilateral bearing and big unilateral bearing allow is on the contrary, and the steering that allows of small unilateral bearing is the side that rotor rotates forward
To.
It is preferred that being provided with band-like hole on the spoke of the belt wheel.
Further preferably, gap connection between the belt wheel, small unilateral bearing and stretching plate.
Further preferably, it is relatively set with annular convex platform on front apron and stator, the four-point contact ball limit is set
It is placed between the annular convex platform.
Further preferably, the small c-type snap ring insertion is stretched out in the groove on the inside of plate, and the big c-type snap ring is embedded in stator
In the groove of inside.
Brush seal structure provided by the invention suitable for rotor bidirectional rotation does not change the part of traditional brush seal
Traditional brush seal structure is designed to a kind of brush seal structure suitable for rotor bidirectional rotation by structure, this is brush
Sealing structure has the advantages that
1, structure is simple, does not change the basic structure composition of traditional brush seal, passes through big unilateral bearing, small one-way shaft
It holds, the mutual cooperation of belt wheel and four-point contact ball, the sealing structure is made to be suitable for the bidirectional rotation of rotor；
2, four-point contact ball interference is fixed on by the characteristics of can bearing bidirectional axial force using four-point contact ball
Between fusion welded zone and stator, the axial force that air-flow differential is formed at left and right sides of sealing structure can be born.
Detailed description of the invention
With reference to the accompanying drawing and embodiment the present invention is described in further detail:
Fig. 1 is the structural schematic diagram of the brush seal structure provided by the invention suitable for rotor bidirectional rotation；
Fig. 2 is the side view of belt wheel；
Fig. 3 is the sectional drawing of belt wheel；
Fig. 4 is the structural schematic diagram of big c-type snap ring；
Fig. 5 is the enlarged drawing of small unilateral bearing and pulley portion.
In figure, 1- stator；2- four-point contact ball；3- front apron；The fusion welded zone 4-；5- rear baffle；6- brush wire bundle；7- band
Wheel；The small unilateral bearing of 8-；The big unilateral bearing of 9-；10- rotor；The small c-type snap ring of 11-；The big c-type snap ring of 12-；51- stretches out plate；71-
Band-like hole.
Specific embodiment
The present invention is further explained below in conjunction with specific embodiment, but the not limitation present invention.
As shown in Figures 1 to 5, the present invention provides a kind of brush seal structures suitable for rotor bidirectional rotation, comprising:
Stator 1, four-point contact ball 2, front apron 3, fusion welded zone 4, rear baffle 5, brush wire bundle 6, belt wheel 7, small unilateral bearing 8, big list
To bearing 9 and rotor 10, wherein the front apron 3 is fixed by fusion welded zone 4 with rear baffle 5, and the root of the brush wire bundle 6 is solid
It being scheduled on fusion welded zone 4, free end is bonded with rotor 10, and 2 interference of four-point contact ball is fixed between fusion welded zone 4 and stator 1,
The rear end of rear baffle 5, which vertically connects, stretches out plate 51, and the periphery of small unilateral bearing 8 and the inner circumferential for stretching out plate 51 are keyed, small unidirectional
The inner circumferential of bearing 8 and the periphery of belt wheel 7 are keyed, and the left and right sides of small unilateral bearing 8 passes through the annular convex platform on stretching plate 51
Fixed with small c-type snap ring 11, the inner circumferential of belt wheel 7 and the periphery of rotor 10 are keyed, periphery and the stator 1 of big unilateral bearing 9
Inner circumferential key connection, the inner circumferential of big unilateral bearing 9 and the periphery for stretching out plate 51 are keyed, and the left and right sides of big unilateral bearing 9 passes through
Plate 51 and annular convex platform and the fixation of big c-type snap ring 12 on stator 1 are stretched out, the small unilateral bearing 8 and big unilateral bearing 9 allow
Rotation direction on the contrary, and small unilateral bearing 8 allow steering be rotor 10 rotate forward direction.
This is suitable for the brush seal structure of rotor bidirectional rotation, compared with traditional brush seal, is guaranteeing process
It joined big unilateral bearing, small unilateral bearing, four-point contact ball and belt wheel under the premise of simple, when rotor rotates forward, by
It cannot rotate forward in big unilateral bearing, therefore, can not be rotated with the stretching plate of big unilateral bearing key connection, and then guarantee by front
The brush seal that plate, fusion welded zone, rear baffle and brush wire bundle form is remain stationary；When rotor reversion, due to small unilateral bearing
It cannot invert, therefore, rotor will be with movable belt pulley, small unilateral bearing and stretching plate, and then drives by front apron, fusion welded zone, rear gear
Plate reversion synchronous with the brush seal that brush wire bundle forms, during rotor reversion, brush wire bundle keeps phase with rotor always
To static, so that the brush wire bundle due to caused by rotor reversion be prevented to destroy, the service life of brush filament is improved, in addition, connect at 4 points
Touching ball bearing can resist the axial force of air-flow differential formation before and after sealing structure, protect unilateral bearing.
As the improvement of technical solution, as shown in Figure 2 and Figure 3, band-like hole 71, the band are provided on the spoke of the belt wheel 7
Shape hole is conducive to radiate to the heat generated due to rotor spin friction, extends the service life of brush seal.
As the improvement of technical solution, gap connection between the belt wheel 7, small unilateral bearing 8 and stretching plate 51 is conducive to
Heat dissipation avoids and directly fits contact between component and damage.
As the improvement of technical solution, as shown in Figure 1 and Figure 2, it is relatively set with annular convex platform on front apron 3 and stator 1,
The limit of four-point contact ball 2 is set between the annular convex platform.
As the improvement of technical solution, as shown in Figure 1 and Figure 2, the recessed of 51 inside of plate is stretched out in the small insertion of c-type snap ring 11
In slot, the big c-type snap ring 12 is embedded in the groove of 1 inside of stator, is respectively used to fix small unilateral bearing and big unilateral bearing,
Wherein, Fig. 4 is the structural schematic diagram of big c-type snap ring, and small c-type snap ring is identical as the structure of big c-type snap ring.
A specific embodiment of the invention is write according to progressive mode, and each embodiment is highlighted
Difference, similar portion can be with cross-reference.
Embodiments of the present invention are elaborated above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode within the knowledge of a person skilled in the art can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (5)
1. a kind of brush seal structure suitable for rotor bidirectional rotation characterized by comprising stator (1), four-point contact ball
Bearing (2), front apron (3), fusion welded zone (4), rear baffle (5), brush wire bundle (6), belt wheel (7), small unilateral bearing (8), big unidirectional
Bearing (9) and rotor (10), wherein the front apron (3) and rear baffle (5) are fixed by fusion welded zone (4), the brush wire bundle
(6) root is fixed on fusion welded zone (4), and free end is bonded with rotor (10), and four-point contact ball (2) interference is fixed on molten
Between welding zone (4) and stator (1), the rear end of rear baffle (5) vertically connect stretch out plate (51), the periphery of small unilateral bearing (8) with
The inner circumferential key connection of plate (51) is stretched out, the inner circumferential of small unilateral bearing (8) and the periphery of belt wheel (7) are keyed, small unilateral bearing (8)
The left and right sides it is fixed by the annular convex platform and small c-type snap ring (11) stretched out on plate (51), the inner circumferential and rotor of belt wheel (7)
(10) periphery key connection, the periphery of big unilateral bearing (9) and the inner circumferential of stator (1) are keyed, the inner circumferential of big unilateral bearing (9)
It is keyed with the periphery for stretching out plate (51), the left and right sides of big unilateral bearing (9) passes through the ring on stretching plate (51) and stator (1)
Shape boss and big c-type snap ring (12) are fixed, the rotation direction of the small unilateral bearing (8) and big unilateral bearing (9) permission on the contrary,
And the steering of small unilateral bearing (8) permission is the direction that rotor (10) rotate forward.
2. according to the brush seal structure for being suitable for rotor bidirectional rotation described in claim 1, it is characterised in that: the belt wheel
(7) band-like hole (71) are provided on spoke.
3. according to the brush seal structure for being suitable for rotor bidirectional rotation described in claim 1, it is characterised in that: the belt wheel
(7), gap connection between small unilateral bearing (8) and stretching plate (51).
4. according to the brush seal structure for being suitable for rotor bidirectional rotation described in claim 1, it is characterised in that: front apron (3)
Be relatively set with annular convex platform on stator (1), four-point contact ball (2) limit be set to the annular convex platform it
Between.
5. according to the brush seal structure for being suitable for rotor bidirectional rotation described in claim 1, it is characterised in that: the small c-type
Snap ring (11) insertion is stretched out in the groove on the inside of plate (51), in the groove on the inside of big c-type snap ring (12) insertion stator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025055.0A CN109578087B (en) | 2019-01-11 | 2019-01-11 | Brush type sealing structure suitable for rotor bidirectional rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025055.0A CN109578087B (en) | 2019-01-11 | 2019-01-11 | Brush type sealing structure suitable for rotor bidirectional rotation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578087A true CN109578087A (en) | 2019-04-05 |
| CN109578087B CN109578087B (en) | 2023-08-29 |
Family
ID=65916238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910025055.0A Active CN109578087B (en) | 2019-01-11 | 2019-01-11 | Brush type sealing structure suitable for rotor bidirectional rotation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578087B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040217549A1 (en) * | 2003-05-01 | 2004-11-04 | Justak John F. | Hydrodynamic brush seal |
| CN102263442A (en) * | 2010-05-28 | 2011-11-30 | 尤洛考普特公司 | Electrical power supply and control device for equipment of a rotor, and an aircraft fitted with such a device |
| CN102352791A (en) * | 2011-10-13 | 2012-02-15 | 芜湖杰锋汽车动力系统有限公司 | Mechanical supercharger structure with speed-changing function |
| CN105443161A (en) * | 2015-12-31 | 2016-03-30 | 沈阳航空航天大学 | Self-concentric brush seal structure with rotor provided with discs |
| CN205744002U (en) * | 2016-06-27 | 2016-11-30 | 清华大学 | A kind of unidirectional labyrinth brush composite seal assembly |
| CN107725126A (en) * | 2017-08-23 | 2018-02-23 | 佛山市轩宸机电设备有限公司 | A kind of steam turbine electromagnetic type hydraulic turning gear |
| CN109057879A (en) * | 2018-08-08 | 2018-12-21 | 永康市翌阳科技有限公司 | A kind of steam turbine blade support arrangement of automation |
-
2019
- 2019-01-11 CN CN201910025055.0A patent/CN109578087B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040217549A1 (en) * | 2003-05-01 | 2004-11-04 | Justak John F. | Hydrodynamic brush seal |
| CN102263442A (en) * | 2010-05-28 | 2011-11-30 | 尤洛考普特公司 | Electrical power supply and control device for equipment of a rotor, and an aircraft fitted with such a device |
| CN102352791A (en) * | 2011-10-13 | 2012-02-15 | 芜湖杰锋汽车动力系统有限公司 | Mechanical supercharger structure with speed-changing function |
| CN105443161A (en) * | 2015-12-31 | 2016-03-30 | 沈阳航空航天大学 | Self-concentric brush seal structure with rotor provided with discs |
| CN205744002U (en) * | 2016-06-27 | 2016-11-30 | 清华大学 | A kind of unidirectional labyrinth brush composite seal assembly |
| CN107725126A (en) * | 2017-08-23 | 2018-02-23 | 佛山市轩宸机电设备有限公司 | A kind of steam turbine electromagnetic type hydraulic turning gear |
| CN109057879A (en) * | 2018-08-08 | 2018-12-21 | 永康市翌阳科技有限公司 | A kind of steam turbine blade support arrangement of automation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109578087B (en) | 2023-08-29 |
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