CN108005793B - A kind of tile sealing structure - Google Patents
A kind of tile sealing structure Download PDFInfo
- Publication number
- CN108005793B CN108005793B CN201711452227.XA CN201711452227A CN108005793B CN 108005793 B CN108005793 B CN 108005793B CN 201711452227 A CN201711452227 A CN 201711452227A CN 108005793 B CN108005793 B CN 108005793B
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- China
- Prior art keywords
- sealing
- inner ring
- bearing bush
- tile
- sealing bearing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/28—Arrangement of seals
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sliding-Contact Bearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of tile sealing structure of the present invention can significantly improve the ability to work (allowing using pressure difference, using temperature and friction linear velocity) and seal performance of sealing device.The characteristics of tile sealing structure, is mainly manifested in terms of following three: first, tile sealing uses submissive chip architecture, enhances the axial rigidity of entire sealing device, reduces the axial deformation of sealing bearing bush, substantially improves the sluggishness of sealing bearing bush and touches mill；Second, tile sealing passes through the combination of inner ring, outer ring and baffle, forms radial and axial sealing, reduces leakage path, reduce the leakage rate of air, improves the seal performance of sealing device；Third, tile sealing are acted on by gas dynamic pressure.The bearing capacity for improving sealing bearing bush bottom air film, reduces the risk of sealing bearing bush and Rub-impact, reduces the frictional heating amount of sealing device, improve the seal performance and service life of entire sealing device.
Description
Technical field
The invention patent belongs to Aeroengine Design field, is related to for whirlers such as aero-engine, gas turbines
The gas densification device of tool air flow circuit, especially a kind of tile sealing structure.
Background technique
In order to adapt to rotor clockwise and both direction counterclockwise rotation simultaneously, and pass through air film top when the rotor rotates
Diaphragm seal is played to reduce abrasion and fever, a kind of " mixing brush seal " patent of invention (US7182345) of foreign application.
The structure increases combined cover on the basis of traditional brush seal structure, and design concept is the cooperation by combined cover and brush envelope
To reduce slip and reduce abrasion.The identical method for solving the problems, such as non-contact seals is also embodied in foreign patent " band lift
The patent of invention (US5755445A) of the non-contact Finger seal of boots ", high-pressure side lift boots direction and the low-pressure side liter of the structure
Power boots are towards on the contrary, and increase bleed slot in sole.But both sealing structures all there is a problem of it is common: 1) brush filament and refer to
The axial rigidity of splinter is small, and axial deformation can occur under the action of obturaging pressure, rub between brush filament or finger tip piece and rear baffle
Power increases, and influences the trackability of sealing device；2) between brush filament and between finger tip piece there are gap, air is from gap by not
It only will increase leakage and also result in pressure closed effect, brush filament or finger tip pad wear is caused to be aggravated.These problems seriously constrain
Brush and Finger seal service life and seal performance.
Summary of the invention
Goal of the invention
The non-contact seal structure that the object of the present invention is to provide a kind of slips is low, voltage endurance capability is high, this knot is enough to be shown
Write the ability to work (allowing using pressure difference, using temperature and friction linear velocity) and seal performance for improving sealing device.
Technical solution
The present invention provides a kind of tile sealing structure, including inner ring 6, outer ring 7, includes inner ring sealing bearing bush on the inner ring 6
10 and inner ring submissive 12, inner ring sealing bearing bush 10 is connected on the boss of inner ring 6 by inner ring submissive 12；On the outer ring 7
Including outer ring sealing bearing bush 11 and outer ring submissive 13, outer ring sealing bearing bush 11 is connected to the inner ring of outer ring 7 for submissive 13 by outer ring
On；The outer surface of 6 boss of inner ring and the inner ring of outer ring 7 cooperate, and the outer diameter for the ring that inner ring sealing bearing bush 10 is formed is sealed equal to outer ring
The internal diameter of watts 11 rings formed.
A kind of tile sealing structure, outer ring sealing bearing bush 11 and 10 interlaced arrangement of inner ring sealing bearing bush, outer ring sealing bearing bush
11 gaps formed between radially covering inner ring sealing bearing bush 10, form radial seal.
A kind of tile sealing structure further includes baffle 8, and baffle 8 is the plate structure of annular, and baffle 8 is in axial direction
The gap formed between covering inner ring sealing bearing bush 10, forms axial seal.
A kind of tile sealing structure, the position of baffle 8 can high-pressure side in sealing structure and/or low-pressure sides.
A kind of tile sealing structure, the Mosaic face between inner ring sealing bearing bush 10 are irregular shape, are formed tortuous
Gap.
A kind of tile sealing structure, the sealing surface side of inner ring sealing bearing bush 10 are provided with hydrodynamic configuration.
A kind of tile sealing structure, the hydrodynamic configuration include chevron-notch, Surface Texture, lozenges, step type
One of or it is a variety of.
Beneficial effect
The advantage of tile sealing is, avoids the brush filament of existing brush seal and the flexible cantilever structure of Finger seal,
Reduce leakage path and enhances the axial rigidity of sealing bearing bush.The structure is compared to previous brush filament sealing and Finger seal knot
Structure, hardly increase processing cost, but have significantly improved to sealing performance.
Detailed description of the invention
Fig. 1 is tile sealing inner ring structure schematic diagram of the present invention；
Fig. 2 is tile sealed outer ring structural schematic diagram of the present invention；
Fig. 3 is cooperation schematic diagram in outer ring in inner ring and Fig. 2 in Fig. 1；
Fig. 4 is tile sealing baffle of the present invention in low-side arrangement schematic diagram；
Fig. 5 is tile sealing baffle of the present invention in high-pressure side structural schematic diagram；
Fig. 6 is tile sealing baffle of the present invention in sided configuration schematic diagram；
Fig. 7 is that inner ring sealing bearing bush splices schematic shapes in Fig. 1；
Fig. 8 is that the sealing surface of inner ring sealing bearing bush in Fig. 1 is provided with herringbone slot structure schematic diagram；
Fig. 9 is that the sealing surface of inner ring sealing bearing bush in Fig. 1 is provided with Surface Texture structural schematic diagram；
Figure 10 is that the sealing surface of inner ring sealing bearing bush in Fig. 1 is provided with lozenges structural schematic diagram；
Figure 11 is that the sealing surface of inner ring sealing bearing bush in Fig. 1 is provided with forge piece of step type structure schematic diagram；
Figure 12 is the schematic diagram of the producible wedge-shaped air film of inner ring sealing bearing bush in Fig. 1；
Wherein, 1- rotor, 2- support, 3- pressure ring, 4- bolt, 5- gasket, 6- inner ring, the outer ring 7-, 8- baffle, 9- positioning
Pin, 10- inner ring sealing bearing bush, the outer ring 11- sealing bearing bush, submissive of 12- inner ring, submissive of the outer ring 13-, 14- location hole.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Tile sealing device is made of inner ring 6, outer ring 7, baffle 8 and positioning pin 9, sees Fig. 4.Inner ring 6 is shown in that Fig. 1 is a kind of
Cyclic symmetric structure, subcycle structure are formed by inner ring sealing bearing bush 10 and inner ring submissive 12.Inner ring sealing bearing bush 10 and axis turn
Son 1 is using the clearance fit of very little, and when gas force generates a downward hydrostatic pressure power to inner ring sealing bearing bush 10, inner ring is close
Envelope watt 10 generates a deformation to 1 direction of axis or rotor, and due to its design feature, the deformation at the far end of inner ring sealing bearing bush 10
The deformation of maximum, proximal end is minimum, therefore one layer of wedge-shaped air film will be formed between inner ring sealing bearing bush 10 and axis or rotor 1, sees
Figure 12, and due to the effect of rotor speed and wedge-shaped air film, a upward dynamic pressure will be generated to inner ring sealing bearing bush 10 to be acted on
Power.It is disposed with hydrodynamic configuration on 10 sealed bottom face of inner ring sealing bearing bush simultaneously, sees that Fig. 8-Figure 11, main function are when air-flow is logical
Out-of-date generation hydrodynamic effect.Inner ring sealing bearing bush 10 is adapted under the static pressure of gas and the collective effect of dynamic pressure active force
The bounce of axis or rotor 1 simultaneously remains small gap, has not only avoided abrasion but also has reduced leakage.The effect that inner ring is submissive 12
It is to provide the support of a radial compliance axial stiffness to inner ring sealing bearing bush 10, had not only met the needs of its radial floating, but also keep away
Exempt from it and generates warpage under axial compressive force effect.7 structure of outer ring is shown in that Fig. 2 is similar to inner ring 6, and difference is on outer ring 7 that outer ring is close
The internal diameter of envelope watt 11 is equal to the outer diameter of inner ring sealing bearing bush 10.The main function of outer ring sealing bearing bush 11 is between inner ring sealing bearing bush 10
The gap of formation, which cover, sees Fig. 3, forms radial seal.Baffle 8 is one piece of annular plate structure, and main function is internal
The gap formed between circle sealing bearing bush 10 is blocked, and axial seal is formed.Inner ring 6, outer ring 7 and baffle 8 are all precision machineries
The metalwork of processing.There are a series of location holes 14 on its outer.By location hole 14 when assembly, to make inner ring sealing bearing bush
The gap formed between 10 is covered by outer ring sealing bearing bush 11.Using rivet or the method for welding by inner ring 6, outer ring 7, baffle
8 and positioning pin 9 link together and be made into tile seal assembly, be fixed on the support 2 of engine by bolt 4.
In present embodiment, sealed diameter 110mm, inner ring shares 18 internal diameter 111mm thickness 1.5mm and axial length
The sealing bearing bush of 10mm, submissive of 18 thickness 0.3mm and axial length 10mm, the location hole that 6 diameters are 6mm.Outer ring is total
There are a sealing bearing bush of 18 internal diameter 114mm thickness 1.5mm and axial length 10mm, 18 thickness 0.3mm and axial length 10mm's
Submissive, the location hole that 6 diameters are 6mm.For baffle internal diameter 112mm with a thickness of 2mm, having 6 diameters is the location hole of 6mm.
In use, baffle 8 can be placed in the different location of sealing device according to actual needs, Fig. 4-Fig. 6 is seen, it can also be with
Using 10 structure of inner ring sealing bearing bush of differently spliced forms, Fig. 7 is seen.
Claims (6)
1. a kind of tile sealing structure, which is characterized in that include that inner ring is close including inner ring (6), outer ring (7), on the inner ring (6)
Watt (10) and inner ring submissive (12) are sealed, inner ring sealing bearing bush (10) is connected to the boss of inner ring (6) by inner ring submissive (12)
On；It include outer ring sealing bearing bush (11) and submissive of outer ring (13) on the outer ring (7), outer ring sealing bearing bush (11) is submissive by outer ring
Piece (13) is connected in the inner ring of outer ring (7)；The outer surface of inner ring (6) boss and the inner ring of outer ring (7) cooperate, inner ring sealing bearing bush
(10) outer diameter of the ring formed is equal to the internal diameter for the ring that outer ring sealing bearing bush (11) are formed, the outer ring sealing bearing bush (11) and inner ring
Sealing bearing bush (10) interlaced arrangement, the gap that outer ring sealing bearing bush (11) is formed between radially covering inner ring sealing bearing bush (10) are formed
Radial seal.
2. a kind of tile sealing structure according to claim 1, which is characterized in that further include baffle (8), baffle (8) is
The plate structure of annular, the gap that baffle (8) is formed between axially covering inner ring sealing bearing bush (10) form axial seal.
3. a kind of tile sealing structure according to claim 2, which is characterized in that the position of baffle (8) is sealed in tile
The high-pressure side of structure and/or low-pressure side.
4. a kind of tile sealing structure according to claim 1, which is characterized in that the splicing between inner ring sealing bearing bush (10)
Face is irregular shape, forms tortuous gap.
5. a kind of tile sealing structure according to claim 1, which is characterized in that the sealing surface one of inner ring sealing bearing bush (10)
Side is provided with hydrodynamic configuration.
6. a kind of tile sealing structure according to claim 5, which is characterized in that the hydrodynamic configuration include chevron-notch,
One of Surface Texture, lozenges, step type are a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452227.XA CN108005793B (en) | 2017-12-27 | 2017-12-27 | A kind of tile sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711452227.XA CN108005793B (en) | 2017-12-27 | 2017-12-27 | A kind of tile sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108005793A CN108005793A (en) | 2018-05-08 |
| CN108005793B true CN108005793B (en) | 2019-10-18 |
Family
ID=62061849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711452227.XA Active CN108005793B (en) | 2017-12-27 | 2017-12-27 | A kind of tile sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005793B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11421543B2 (en) | 2018-11-28 | 2022-08-23 | Raytheon Technologies Corporation | Hydrostatic seal with asymmetric beams for anti-tipping |
| US11111805B2 (en) | 2018-11-28 | 2021-09-07 | Raytheon Technologies Corporation | Multi-component assembled hydrostatic seal |
| US11674402B2 (en) * | 2018-11-28 | 2023-06-13 | Raytheon Technologies Corporation | Hydrostatic seal with non-parallel beams for anti-tipping |
| US11199102B2 (en) | 2018-11-28 | 2021-12-14 | Raytheon Technologies Corporation | Hydrostatic seal with increased design space |
| CN111350551B (en) * | 2020-03-07 | 2022-04-26 | 西北工业大学 | Be used for flexible cylinder air film seal structure between birotor axle |
| CN114166478B (en) * | 2021-10-20 | 2023-09-05 | 中国航发四川燃气涡轮研究院 | Method and device for measuring hysteresis rate of seal rigidization rate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5755445A (en) * | 1996-08-23 | 1998-05-26 | Alliedsignal Inc. | Noncontacting finger seal with hydrodynamic foot portion |
| US7703774B2 (en) * | 2006-09-12 | 2010-04-27 | General Electric Company | Shaft seal using shingle members |
| WO2008140451A1 (en) * | 2007-05-14 | 2008-11-20 | Rexnord Industries Llc | Non-contacting seal for rotating surfaces |
| CN105545375B (en) * | 2015-12-14 | 2017-03-08 | 中国燃气涡轮研究院 | Twin beams finger sealing device |
| CN105822358B (en) * | 2016-03-23 | 2017-09-29 | 西北工业大学 | A kind of between centers refers to formula sealing device |
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2017
- 2017-12-27 CN CN201711452227.XA patent/CN108005793B/en active Active
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| Publication number | Publication date |
|---|---|
| CN108005793A (en) | 2018-05-08 |
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