CN105822358A - Between-shafts finger seal device - Google Patents
Between-shafts finger seal device Download PDFInfo
- Publication number
- CN105822358A CN105822358A CN201610167899.5A CN201610167899A CN105822358A CN 105822358 A CN105822358 A CN 105822358A CN 201610167899 A CN201610167899 A CN 201610167899A CN 105822358 A CN105822358 A CN 105822358A
- Authority
- CN
- China
- Prior art keywords
- finger
- overhanging
- stretch
- seal sheet
- finger seal
- 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.)
- Granted
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a between-shafts finger seal device. The between-shafts finger seal device is composed of an outer stretching between-shafts finger seal structure and an inner stretching between-shafts finger seal structure. The outer stretching between-shafts finger seal structure is installed on an inner shaft, and the inner stretching between-shafts finger seal structure is installed on an outer shaft. The outer stretching between-shafts finger seal structure and the inner stretching between-shafts finger seal structure each comprises a plurality of finger seal pieces, a front baffle, a rear baffle and an elastic component. A plurality of finger curved beams and finger boots are machined on the finger seal pieces. The molded line of the finger curved beams is any one of an involute, a circular arc or a common polynomial function curve. The finger boots make contact with the surfaces of the rotary shafts to form sealing interfaces. Radial clearances are reserved between the front baffles, the rear baffles and the finger seal pieces, and the elastic components are placed in the clearances correspondingly so as to compensate outward movement of the finger curved beams and displacement perturbation of the inner rotary shaft and the outer rotary shaft under the action of centrifugal force. The between-shafts finger seal device adopts flexible sealing and is prepared from carbon-carbon composites with good abrasion resistance, the machining cost is low, the efficiency is high, assembly and adjustment are easy, and the sealing performance and abrasion resistance of between-shafts sealing are promoted.
Description
Technical field
The present invention relates to aero-engine between centers technical field of sealing technology, specifically, relate to one and refer to formula sealing device for aero-engine reversion between centers.
Background technology
In aero-engine, in order to improve performance, shorten rotor bearing distance and alleviate construction weight, generally High Pressure Turbine Rotor is bearing on Low Pressure Turbine Rotor, therefore between high, medium and low voltage turbine and its compressor driven and the connecting shaft of fan that concentric rotates, need intershaft bearing to be supported.And these intershaft bearing chambeies and the sealing of between centers airflow path, just belong between centers and seal.Some advanced electromotor uses and turns to contrary two engine rotor, then between centers sealing surfaces sliding speed can significantly improve.This between centers seals and is not installed only in the same direction or in the confined space between incorgruous high speed rotating shaft, and the high maneuverability of aero-engine and operating mode polytropy will cause rotor generation multiple degrees of freedom to be quivered, thus between centers seal operation is also subjected to from inner and outer Rotator radially, axially, the multiple disturbance of displacement deflection.It is on active service at present or mainly has the sealing of comb tooth, graphite grazing and brush seal at the aero-engine between centers seal type ground.
Comb tooth seals and belongs to non-contacting seal, simple in construction, low cost, but leaks bigger because having larger gap between rotor and sealing.For reduce leakage, or take small-gap suture design but because cannot compensate rotor displacement excitation and easily wear and tear, or by increase the comb number of teeth lengthen runner limited by bulk again.
Between centers graphite grazing has various ways, comprises radially main seal ring and end face sealing ring.Graphite grazing has preferably an obturaging property, but abrasion heating is relatively big, and owing to graphite material fragility is big, fragile during installation makes cost increase.Graphite grazing assembly is more, leaks and abrasion occurs mainly between main seal ring and rotor interface and main seal ring and both ends of the surface sealing.For reducing leakage, contact condition can only be kept to sacrifice polishing machine for cost between main seal ring and rotor, the most currently mainly by improving the contact wear with reduction main seal ring with rotor of the graphite-seal ring material property, such as European patent EP 2698567A1；And it is the frictional heating reducing primary seal graphite annulus with both ends of the surface sealing ring, external scientific research personnel proposes gas film sealing version, end face sealing ring end face designs fluid dynamic pressure groove, such as United States Patent (USP) US2013/0251523A1, and US2012/0261887A1；Or graphite annulus is made the two panels connected by spring, such as United States Patent (USP) US2014/0049010A1, adjust the axial gap between main graphite annulus and two rotary packing rings with control.Have employed an end face sealing ring in Chinese patent CNIO4500743A, number of parts has reduced, but primary structure does not changes much.
Comb tooth seals and graphite grazing is all rigid seal, and abrasion heating is serious, and the graphite grazing crisp cracky of annular, and cost is high, and number of parts is many, it is difficult to control.
nullForeign scholar proposes that flexible brush seal is used between centers and seals (GaryHolloway,P.E.,JayeshMehta,LewisRosado.InnovativeRotatingIntershaftBrushSealforSealingBetweenRotatingShaftsPartI–MechanicalDesignofTheRotatingBrushSeal.AIAA2006-4751,2006,7. and JayeshMehta,GaryHolloway,P.E.,LewisRosado.InnovativeRotatingIntershaftBrushSealforSealingBetweenRotatingShaftsPartII–ModelingofBrushSealLeakageFlows.AIAA2006-4752.2006,7).Between centers brush seal has low, the advantage of compact conformation of leakage.But the manufacturing cost of brush seal own is the highest, numerous brush filament are difficult to control of strictly arranging, and there is the danger of brush filament corrode fracture under high temperature and high speed.
Summary of the invention
In order to avoid inverting, under high sliding ratio, large disturbances excitation, leakage and the wear problem that between centers seals in prior art, the present invention proposes a kind of between centers and refers to formula sealing device, uses the finger tip curved beam of flexible Finger seal to adapt to displacement excitation；Utilize the hydrodynamic effect of Finger seal and the anti-wear performance advantage of carbon carbon composite, the shift perturbation of outer shaft in adapting to, reduces sealing wear and leakage, and number of parts is few, it is simple to install and control.
The technical solution adopted for the present invention to solve the technical problems is: include overhanging between centers refer to formula seal structure, in stretch between centers refer to formula seal structure, outer shaft, interior axle, connecting pin, wherein, described overhanging between centers refers to that formula seals structure and includes overhanging front apron, overhanging flexible member, overhanging backboard, overhanging Finger seal sheet, finger tip curved beam, finger tip boots, described overhanging backboard is fixed on interior axle, and together rotates with interior axle；Described overhanging Finger seal sheet is multiple, each overhanging Finger seal sheet is machined with some finger tip curved beams and finger tip boots along external diameter circumference, multipair pilot hole is had along internal diameter circumference, overhanging Finger seal sheet is between overhanging backboard and overhanging front apron, overhanging Finger seal sheet is being connected by connecting pin near inner radius with overhanging front apron, overhanging backboard, connection aperture on overhanging backboard is more than connecting pin diameter, connecting pin and overhanging front apron are tight fit, are tight fit between connecting pin and overhanging Finger seal sheet；Radial clearance is had between overhanging front apron and the inner radius of overhanging Finger seal sheet and overhanging backboard, and overhanging flexible member is placed at position, gap, move and the shift perturbation of interior outer shaft outside finger tip curved beam under centrifugal action to compensate, overhanging Finger seal sheet pilot hole when connecting is staggered, making the gap between finger tip curved beam be covered by the finger tip curved beam on adjacent Finger seal sheet, finger tip boots contact composition and obturage interface with rotating shaft surface；
Stretch in described between centers refer to formula seal structure include in stretch front apron, in stretch backboard, in stretch Finger seal sheet, in stretch flexible member, finger tip curved beam, finger tip boots, seal receptacle, stretch backboard in described to be fixed on outer shaft by seal receptacle, and together rotate with outer shaft；It is multiple for stretching Finger seal sheet in described, stretch Finger seal sheet in each and be machined with some finger tip curved beams and finger tip boots along internal diameter circumference, multipair pilot hole is had along external diameter circumference, inside stretch Finger seal sheet stretch front apron interior and interior stretch between backboard, inside stretch Finger seal sheet and stretch front apron with interior, inside stretch backboard connected by connecting pin near outer radius, inside stretch the connection aperture on backboard more than connecting pin diameter, connecting pin and interior front apron of stretching are tight fit, connecting pin and interior stretching between Finger seal sheet are tight fit, inside stretch front apron and the interior outer radius stretching Finger seal sheet and interior stretching has radial clearance between backboard, and stretch flexible member in position, gap is placed, move and the shift perturbation of interior outer shaft outside finger tip curved beam under centrifugal action to compensate；Inside stretching Finger seal sheet pilot hole when connecting to be staggered, make the gap between finger tip curved beam be covered by the finger tip curved beam on adjacent Finger seal sheet, finger tip boots contact composition and obturage interface with rotating shaft surface.
Described overhanging Finger seal sheet and described in stretch Finger seal sheet at least 2 respectively.
On each Finger seal sheet, gap between finger tip curved beam is positioned at the center position of adjacent seals sheet curved beam.
Described finger tip curved beam molded line is any one of involute, circular arc or general polynomial function curve.
Described overhanging Finger seal sheet and described in stretch Finger seal sheet be carbon carbon composite.
Beneficial effect
The between centers that the present invention proposes refers to formula sealing device, uses flexible Finger seal to replace original rigidity comb tooth to seal or graphite grazing, and the flexible finger tip beam of Finger seal is suitable for displacement excitation；Between centers sealing surfaces sliding ratio is big, utilizes the hydrodynamic effect of Finger seal and the anti-wear performance advantage of carbon carbon composite to tackle the abrasion and big problem of generating heat sealed；In attachment structure, design gaps coordinates and flexible member, can be further compensate for the shift perturbation of rotating shaft；Finger seal sheet and front apron, backboard are linked to be overall easily controllable and adjust, and sealing device number of parts is few, low cost, and leakage and polishing machine get a promotion.
The present invention seals relative between centers comb tooth, owing to using flexible sealing to be suitable for rotating shaft displacement excitation, and uses the carbon carbon composite of high abrasion resistance to prepare, and meets the high sliding ratio of rotating shaft and floating is obturaged the many disturbances in interface excitation operating mode, and seal performance is obviously improved.
The present invention seals relative to graphite annulus, it is only necessary to controlling radial leakage passage, number of parts is easily installed debugging less；Flexible finger tip structure and high-wearing feature material organically combine, adapt to the displacement excitation of interior outer shaft and high sliding ratio, the hydrodynamic design of the Bottom Shape of the compensating action of flexible member, and seal shoe in addition, can comprehensively promote, by many kinds of measures, obturaging property and the wearability that between centers seals.
The present invention is relative to brush seal, and processing cost is low, and efficiency is high, it is easy to equipment adjustment, and can reduce contact stiffness and adaptivity by the compensating action of flexible member, it is ensured that in the normal work of interior outer shaft shift perturbation lower seal.
Accompanying drawing explanation
With embodiment, one between centers of the present invention is referred to that formula sealing device is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is that between centers of the present invention refers to that the overhanging between centers of formula sealing device refers to formula sealed structural representation.
Fig. 2 is to stretch between centers between centers of the present invention refers to formula sealing device to refer to formula sealed structural representation.
Fig. 3 a, Fig. 3 b are end view and the partial enlarged drawing of the overhanging Finger seal sheet of the present invention.
Fig. 4 a, Fig. 4 b are end view and the partial enlarged drawing stretching Finger seal sheet in the present invention.
Fig. 5 is the overhanging backboard side view along direction, high-pressure side of the present invention.
Fig. 6 is to stretch the backboard side view along direction, high-pressure side in the present invention.
In figure:
1. in stretching the backboard 13. overhanging backboard pilot hole 17. of seal receptacle 14. finger tip curved beam 15. finger tip boots 16. in stretching Finger seal sheet 12. in stretching front apron 11. in stretching flexible member 10. in the overhanging Finger seal sheet 9. of the overhanging backboard of axle 7. 8. in outer shaft 2. overhanging front apron 3. connecting pin 4. overhanging flexible member 5. nut 6., stretch backboard pilot hole
Detailed description of the invention
The present embodiment is that a kind of between centers refers to formula sealing device.
Refering to Fig. 1～Fig. 6, between centers refers to by the overhanging between centers being arranged on interior axle, formula sealing device refers to that formula is stretched between centers and referred to that formula seals structure and forms in sealing structure and being arranged on outer shaft.
In the present embodiment, overhanging between centers refers to that formula seals structure and includes overhanging front apron 2, overhanging flexible member 4, overhanging backboard 7, overhanging Finger seal sheet 8, finger tip curved beam 14, finger tip boots 15, overhanging backboard pilot hole 16, overhanging Finger seal sheet 8 is multiple, each overhanging Finger seal sheet 8 is machined with some finger tip curved beams 14 and finger tip boots 15 along external diameter circumference, has multipair pilot hole along internal diameter circumference；Overhanging Finger seal sheet 8 is between overhanging backboard 7 and overhanging front apron 2, overhanging Finger seal sheet 8 is being connected by connecting pin 3 near inner radius with overhanging front apron 2, overhanging backboard 7, the most overhanging backboard 7 end face contacts with the Finger seal sheet end face near low-pressure side, overhanging front apron 2 only contacts with diaphragm seal near the end face of inner radius, there is gap between remainder and on high-tension side Finger seal sheet.This gap is 2～3mm, front apron 2 structure ensure.The diameter of the pilot hole 16 on overhanging backboard 7 is than connecting pin 3 diameter big 2～4mm.Overhanging flexible member 4 it is placed with, the finger tip curved beam deformation caused with the displacement excitation and centrifugal force compensating interior outer shaft between overhanging front apron 2 internal diameter and overhanging backboard 7 flange.Overhanging backboard 7 is connected on interior axle 6, is fixed by nut 5.Initial installation between external diameter and the outer shaft 1 of overhanging Finger seal sheet 8 uses matched in clearance, and when overhanging Finger seal sheet 8 rotates together with interior axle 6, under centrifugal action, the outer shifting of finger tip curved beam can reduce fit clearance, thus can reduce leakage.In order to reduce the contact wear of finger tip boots 15 and outer shaft, according to the deformation under centrifugal action of the finger tip boots, finger tip boots portion can be carried out correction of the flank shape, the deformation under hydrodynamic and centrifugal force act on jointly of the finger tip boots is made to better adapt to side channels shape, thus reduce the local uneven wear of finger tip sole, increase the service life.
Overhanging between centers refers to that formula seals in structure, outer shaft diameter is 183mm, interior shaft diameter is 145mm, and overhanging Finger seal sheet material is carbon carbon composite, and every thickness is 1.0～2.0mm, finger tip curved beam 14 molded line is involute, curved beam number is 100, curved beam a width of 1.3～2.0mm, the most a length of 5mm of curved beam, overhanging front apron external diameter differs 2～3mm with overhanging Finger seal sheet external diameter, and overhanging backboard external diameter differs 2～3mm with overhanging Finger seal sheet external diameter.
In the present embodiment, inside stretch between centers refer to formula seal structure by interior stretch front apron 10, in stretch backboard 12, in stretch Finger seal sheet 11, in stretch flexible member 9, seal receptacle 13, finger tip curved beam 14, finger tip boots 15, in stretch backboard pilot hole 17 and form, inside stretch Finger seal sheet 11 for multiple, stretch Finger seal sheet 11 in each and be machined with some finger tip curved beams 14 and finger tip boots 15 along internal diameter circumference, have multipair pilot hole along external diameter circumference；Inside stretch Finger seal sheet 11 stretch front apron 10 interior and interior stretch between backboard 12, inside stretch Finger seal sheet 11 with interior stretch front apron 10, in stretch backboard 12 and be connected by connecting pin 3 pin near outer radius.The end face stretching backboard 12 in wherein contacts with the Finger seal sheet end face near low-pressure side；Inside stretch front apron 10 only to contact with on high-tension side Finger seal sheet near the end face of outer radius, between remainder and on high-tension side Finger seal sheet, there is gap.This gap is 2～3mm, front apron 10 structure ensure.Inside stretch the diameter of backboard pilot hole 17 than connecting pin 3 diameter big 3～5mm.Inside stretch in being placed with between the external diameter of front apron 10 and overhanging backboard L-type inner ring surface and stretch flexible member 9, the finger tip curved beam deformation caused with the displacement excitation and centrifugal force compensating interior outer shaft.Overhanging backboard 12 is connected on outer shaft 1 by seal receptacle 13.Seal receptacle 13 is fixed on outer shaft 1 by alignment pin interference fit.The initial installation inside stretched between the internal diameter of Finger seal sheet 11 and interior axle 6 uses interference fits, when interior stretch Finger seal sheet 11 rotate together with outer shaft 1 time, move outside finger tip curved beam under centrifugal action and can reduce the contact pressure between cooperation face, and keep relatively Small leak.According to the finger tip boots 15 deformation under centrifugal action, finger tip boots portion can be carried out correction of the flank shape simultaneously, axle surface configuration in making the deformation under hydrodynamic and centrifugal force act on jointly of the finger tip boots adapt to, thus reduce the local uneven wear of finger tip sole, increase the service life.
Inside stretch between centers and refer to that formula seals in structure, outer shaft diameter is 183mm, interior shaft diameter is 145mm, and inside stretching Finger seal sheet is that carbon carbon composite is made, and every thickness is 1.0～2.0mm, finger tip curved beam 14 molded line is involute, curved beam number is 100, curved beam a width of 1.3～2.0mm, the most a length of 5mm of curved beam, inside stretch front apron internal diameter and differ 2～3mm with interior Finger seal sheet internal diameter of stretching, inside stretch backboard internal diameter and differ 2～3mm with interior Finger seal sheet internal diameter of stretching.
In actual application, can improve according to sealing bulk and performance requirement, such as Finger seal sheet number, be not limited in the present embodiment 4 used, Finger seal sheet is minimum is 2, and the upper limit of sheet number depends on installing space dimensional requirement.When Finger seal sheet number of variations, related fittings size, as connecting pin, backboard length should match.
Claims (5)
1. a between centers refers to formula sealing device, including overhanging between centers refer to formula seal structure, in stretch between centers refer to formula seal structure, outer shaft, interior axle, connecting pin, it is characterized in that: described overhanging between centers refers to that formula seals structure and includes overhanging front apron, overhanging flexible member, overhanging backboard, overhanging Finger seal sheet, finger tip curved beam, finger tip boots, described overhanging backboard is fixed on interior axle, and together rotates with interior axle；Described overhanging Finger seal sheet is multiple, each overhanging Finger seal sheet is machined with some finger tip curved beams and finger tip boots along external diameter circumference, multipair pilot hole is had along internal diameter circumference, overhanging Finger seal sheet is between overhanging backboard and overhanging front apron, overhanging Finger seal sheet is being connected by connecting pin near inner radius with overhanging front apron, overhanging backboard, connection aperture on overhanging backboard is more than connecting pin diameter, connecting pin and overhanging front apron are tight fit, are tight fit between connecting pin and overhanging Finger seal sheet；Radial clearance is had between overhanging front apron and the inner radius of overhanging Finger seal sheet and overhanging backboard, and overhanging flexible member is placed at position, gap, move and the shift perturbation of interior outer shaft outside finger tip curved beam under centrifugal action to compensate, overhanging Finger seal sheet pilot hole when connecting is staggered, making the gap between finger tip curved beam be covered by the finger tip curved beam on adjacent Finger seal sheet, finger tip boots contact composition and obturage interface with rotating shaft surface；
Stretch in described between centers refer to formula seal structure include in stretch front apron, in stretch backboard, in stretch Finger seal sheet, in stretch flexible member, finger tip curved beam, finger tip boots, seal receptacle, stretch backboard in described to be fixed on outer shaft by seal receptacle, and together rotate with outer shaft；It is multiple for stretching Finger seal sheet in described, stretch Finger seal sheet in each and be machined with some finger tip curved beams and finger tip boots along internal diameter circumference, multipair pilot hole is had along external diameter circumference, inside stretch Finger seal sheet stretch front apron interior and interior stretch between backboard, inside stretch Finger seal sheet and stretch front apron with interior, inside stretch backboard connected by connecting pin near outer radius, inside stretch the connection aperture on backboard more than connecting pin diameter, connecting pin and interior front apron of stretching are tight fit, connecting pin and interior stretching between Finger seal sheet are tight fit, inside stretch front apron and the interior outer radius stretching Finger seal sheet and interior stretching has radial clearance between backboard, and stretch flexible member in position, gap is placed, move and the shift perturbation of interior outer shaft outside finger tip curved beam under centrifugal action to compensate；Inside stretching Finger seal sheet pilot hole when connecting to be staggered, make the gap between finger tip curved beam be covered by the finger tip curved beam on adjacent Finger seal sheet, finger tip boots contact composition and obturage interface with rotating shaft surface.
Between centers the most according to claim 1 refers to formula sealing device, it is characterised in that: described overhanging Finger seal sheet and described in stretch Finger seal sheet at least 2 respectively.
Between centers the most according to claim 1 refers to formula sealing device, it is characterised in that: on each Finger seal sheet, gap between finger tip curved beam is positioned at the center position of adjacent seals sheet curved beam.
Between centers the most according to claim 1 refers to formula sealing device, it is characterised in that: described finger tip curved beam molded line is any one of involute, circular arc or general polynomial function curve.
Between centers the most according to claim 1 refers to formula sealing device, it is characterised in that: described overhanging Finger seal sheet and described in stretch Finger seal sheet be carbon carbon composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167899.5A CN105822358B (en) | 2016-03-23 | 2016-03-23 | A kind of between centers refers to formula sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167899.5A CN105822358B (en) | 2016-03-23 | 2016-03-23 | A kind of between centers refers to formula sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105822358A true CN105822358A (en) | 2016-08-03 |
| CN105822358B CN105822358B (en) | 2017-09-29 |
Family
ID=56523708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610167899.5A Active CN105822358B (en) | 2016-03-23 | 2016-03-23 | A kind of between centers refers to formula sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105822358B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939974A (en) * | 2017-11-28 | 2018-04-20 | 沈阳航空航天大学 | A kind of adjustable magnetic damping presses down the brush seal structure that quivers |
| CN108005793A (en) * | 2017-12-27 | 2018-05-08 | 中国航发四川燃气涡轮研究院 | A kind of tile sealing structure |
| CN114151204A (en) * | 2021-10-20 | 2022-03-08 | 中国航发四川燃气涡轮研究院 | Fingertip piece and fingertip sealing structure |
| CN114575935A (en) * | 2022-03-01 | 2022-06-03 | 西安热工研究院有限公司 | Self-adaptive flexible steam turbine shaft seal structure |
| CN114673564A (en) * | 2022-03-16 | 2022-06-28 | 中国航发沈阳发动机研究所 | Fingertip sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6196550B1 (en) * | 1999-02-11 | 2001-03-06 | Alliedsignal Inc. | Pressure balanced finger seal |
| EP2042788A1 (en) * | 2007-09-28 | 2009-04-01 | Honeywell International Inc. | Reduced pressure load finger seal assembly |
| CN202140119U (en) * | 2011-06-16 | 2012-02-08 | 中航商用航空发动机有限责任公司 | Sealing fin and radial sealing device |
| CN102518477A (en) * | 2011-12-31 | 2012-06-27 | 中国燃气涡轮研究院 | Finger sealing device |
| CN204984487U (en) * | 2014-08-29 | 2016-01-20 | 中航商用航空发动机有限责任公司 | Fingertip seal structure and fingertip gasket thereof |
-
2016
- 2016-03-23 CN CN201610167899.5A patent/CN105822358B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6196550B1 (en) * | 1999-02-11 | 2001-03-06 | Alliedsignal Inc. | Pressure balanced finger seal |
| EP2042788A1 (en) * | 2007-09-28 | 2009-04-01 | Honeywell International Inc. | Reduced pressure load finger seal assembly |
| CN202140119U (en) * | 2011-06-16 | 2012-02-08 | 中航商用航空发动机有限责任公司 | Sealing fin and radial sealing device |
| CN102518477A (en) * | 2011-12-31 | 2012-06-27 | 中国燃气涡轮研究院 | Finger sealing device |
| CN204984487U (en) * | 2014-08-29 | 2016-01-20 | 中航商用航空发动机有限责任公司 | Fingertip seal structure and fingertip gasket thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939974A (en) * | 2017-11-28 | 2018-04-20 | 沈阳航空航天大学 | A kind of adjustable magnetic damping presses down the brush seal structure that quivers |
| CN107939974B (en) * | 2017-11-28 | 2019-04-26 | 沈阳航空航天大学 | A kind of adjustable magnetic damping suppression is quivered brush seal structure |
| CN108005793A (en) * | 2017-12-27 | 2018-05-08 | 中国航发四川燃气涡轮研究院 | A kind of tile sealing structure |
| CN114151204A (en) * | 2021-10-20 | 2022-03-08 | 中国航发四川燃气涡轮研究院 | Fingertip piece and fingertip sealing structure |
| CN114575935A (en) * | 2022-03-01 | 2022-06-03 | 西安热工研究院有限公司 | Self-adaptive flexible steam turbine shaft seal structure |
| CN114575935B (en) * | 2022-03-01 | 2024-01-23 | 西安热工研究院有限公司 | Self-adaptive flexible steam turbine shaft seal structure |
| CN114673564A (en) * | 2022-03-16 | 2022-06-28 | 中国航发沈阳发动机研究所 | Fingertip sealing device |
| CN114673564B (en) * | 2022-03-16 | 2023-11-28 | 中国航发沈阳发动机研究所 | Fingertip sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105822358B (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105822358A (en) | Between-shafts finger seal device | |
| RU2501955C2 (en) | Design of seal for sealing space between rotary and fixed element /versions/ | |
| US8944756B2 (en) | Blade outer air seal assembly | |
| JP5174241B2 (en) | Shaft seal and rotating machine equipped with the same | |
| EP1116906B1 (en) | A seal arrangement | |
| US20080018054A1 (en) | Aspirating labyrinth seal | |
| CA2824292A1 (en) | Seal with stacked sealing elements | |
| US8840114B2 (en) | Assembly comprising a rotatable component | |
| JP6012505B2 (en) | Shaft seal device and rotary machine | |
| KR101832641B1 (en) | Shaft seal device and rotary machine | |
| CN108799444B (en) | Planetary differential radial double-end-face mechanical seal | |
| JP2008038898A (en) | Aspirating labyrinth seal | |
| KR20170083261A (en) | Hybrid sealing structure of a turbine | |
| US9103224B2 (en) | Compliant plate seal for use with rotating machines and methods of assembling a rotating machine | |
| US9982604B2 (en) | Multi-stage inter shaft ring seal | |
| US10683769B2 (en) | Centrifugally activatable seal for a rotary machine and method of assembling same | |
| US11708909B2 (en) | Carbon seal | |
| KR101484879B1 (en) | A device for sealing in a Turbo machine | |
| CN103982248A (en) | Blade type sealing device having clearance control function | |
| KR101898830B1 (en) | Shaft sealing mechanism | |
| JP2017203470A (en) | Seal segment and rotary machine | |
| WO2022073636A1 (en) | Crankshaft seal unit for an internal combustion engine | |
| GB2439089A (en) | A brush seal for sealing a gap in a turbomachine | |
| KR20160107835A (en) | Rotor assembly with a sealing means and a turbine apparatus including the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |