CN106930839B - A kind of packing and sealing brush combined type internal combustion wave rotor - Google Patents
A kind of packing and sealing brush combined type internal combustion wave rotor Download PDFInfo
- Publication number
- CN106930839B CN106930839B CN201710119038.4A CN201710119038A CN106930839B CN 106930839 B CN106930839 B CN 106930839B CN 201710119038 A CN201710119038 A CN 201710119038A CN 106930839 B CN106930839 B CN 106930839B
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- China
- Prior art keywords
- packing
- wave rotor
- sealing brush
- sealing
- partition plate
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
Abstract
The invention discloses a kind of packing and sealing brush combined type internal combustion wave rotor, belong to aeroengine combustor buring room technical field of sealing technology.Packing mainly includes the structures such as wave rotor, end cap, inside and outside packing, sealing brush with sealing brush combined type internal combustion wave rotor sealing device, external leakage of the gases at high pressure to wave rotor in inside and outside packing prevention wave rotor, and sealing brush then prevents gases at high pressure from being leaked to adjacent wave rotor channel, inside and outside packing and sealing brush are elastic abrasion-proof material, can receiving system to a certain extent thermal expansion, it is ensured that wave rotor rotary course is unlikely to stuck.The combination sealing method is at the same time available for other sealings for being related to multi-faceted leakage system in aviation field.
Description
Technical field
The invention belongs to aero-engine field, particularly a kind of packing and sealing brush combined type internal combustion wave rotor.
Background technology
Internal combustion wave rotor is a kind of new unsteady burner, has and increases substantially the potential of propulsion system performance
Advantage, but due to the course of work, its main part wave rotor is in rotation status, and allowing for leakage problem becomes its intrinsic skill
Art obstacle.And the Quick-pressurizing combustion mode of its course of work generally use pinking or detonation, the pressure that combustion process produces
It is very high, especially highlight the influence of leakage.Data shows that the internal combustion wave rotor project of the ABB sixties in last century is forced to terminate,
The influence wherein leaked is exactly a major reason.
As the above analysis, internal combustion wave rotor relation technological researching is carried out, it is necessary to solve its intrinsic leakage and ask
Topic.Leakage phenomenon present in internal combustion wave rotor has certain particularity, and one side high pressure draught can radially leak to week
Collarette border, causes engine globality loss of energy；On the other hand adjacent wave rotor channel can be circumferentially leaked to, influences internal combustion
The job stability of wave rotor.The general only one-sided sealing for considering fixed-direction of the single sealing means of tradition, such as patent " base
In unsteady internal combustion wave rotor and method of work of the burning with function of increasing pressure ", the patent No.：ZL201310018405.3, proposes
A kind of internal combustion wave rotor structure and method based on unsteady burning, are set between wave rotor end face and end cap in the system
Level-one comb tooth sealing structure, can partly suppress the leakage of radial direction.In addition non-contact seals are in the larger environment of pressure difference
Under, it is difficult to realize preferable sealing effect, although and non-contact seals sealing effect is good, there are frictional resistance is big, rotor is easy
Piston ring packing used by the characteristics of stuck, such as piston engine.
The content of the invention
Goal of the invention：Based on the deficiencies of the prior art, the present invention provides a kind of packing and turns with sealing brush combined type internal combustion ripple
Son, it is bad and easily bring the technology of the stuck adverse consequences of rotor for solving sealing effect at internal combustion wave rotor end face and end cap
Problem.
Technical solution：
A kind of packing and sealing brush combined type internal combustion wave rotor, including wave rotor, end cap, outer packing, interior packing and sealing
Brush；
The wave rotor includes outer barrel, inner cylinder and partition plate three parts, outer barrel and inner cylinder is coaxial and end face, the partition plate
Along the radially connected outer barrel of wave rotor and inner cylinder, by the region division between outer barrel and inner cylinder into wave rotor passage one by one, and institute
The end for stating partition plate is located at the inner side of outer barrel and inner cylinder end；The outer barrel corresponding with each partition plate position on wave rotor
End set is jagged, the end set of inner cylinder is fluted, and above-mentioned notch runs through the wall thickness of outer barrel, and the opening of above-mentioned groove is located at
The outer side surface of inner cylinder；Outer ring slot circumferentially, and institute are provided with the position by close end in the outside wall surface of the outer barrel
Notch is stated to extend in outer ring slot from the end of outer barrel；
The end cap is annular shape, and inner annular edge is provided with the inner convex platform that a circle is higher than anchor ring, and outer shroud edge is provided with
One circle is higher than the outer lug boss of anchor ring, and inner convex platform and outer lug boss be located at the same side of annulus, the outside wall surface of the inner convex platform and
The internal face adaptation of inner cylinder, the outside wall surface of the inner convex platform are provided with interior ring slot circumferentially, the internal face of the outer lug boss
It is adapted to the outside wall surface of outer barrel；
The outer packing and interior packing are the annular shape with opening, and opening is provided with the connection dress at connection opening both ends
Put；And outer packing and interior packing have elasticity, annulus opening is opened in a free state, annulus closure of openings under closure state；
The sealing brush includes sealing brush partition plate, and the length and partition plate of the sealing brush partition plate are in wave rotor radial direction
Length is identical, and a clamp is respectively arranged with the both ends in sealing brush septum plate length direction, and one of clamp is adapted to notch,
Another clamp is adapted to groove；The side of the sealing brush partition plate is provided with the splay bullet of outward opening along its length
Property brush ear.Sealing brush is installed on wave rotor by clamp, and brush ear is compressed and rubbed against with the end face of end cap outwardly, outer packing extruding
Between the outer lug boss internal face of the clamp and end cap that have card slot, interior packing is squeezed in the inner convex platform outside wall surface and inner cylinder of end cap
Between internal face so that circumferential that there is good sealing.In the course of work, using packing as object of reference, wave rotor and end cap it is interior
Outer lug boss rotates relative to packing, and friction scope occurs in the thickness range of packing, is similar to swollen where packing
In the range of the groove width of ring recess, rather than friction caused by the circumferential overall translation of packing, therefore compared with traditional expansion ring seale,
Frictional force greatly reduces.
Further, in the present invention, length and the length of twice of sealing brush partition plate of the partition plate along wave rotor axial direction
The sum of degree is equal to the length of outer barrel and inner cylinder.Partition plate gets up identical with inner cylinder and outer barrel length with sealing brush baffle combination so that
Wave rotor end face.
Further, in the present invention, the brush ear of sealing brush for two arc-shapeds brush valve and free state when brush valve
Radian is more than 90 degree.After assembling, brush ear contacts friction with end cap so that circumferential have good sealing, and frictional position is located at
The middle part of each brush valve, frictional force is smaller, and brush ear does not allow rapid wear.
Further, in the present invention, the outer packing and interior packing meet in closed state, outside in the production process
Packing outside diameter is slightly less than the internal face diameter of outer lug boss, and interior packing outside diameter is slightly less than inner cylinder internal face diameter.
Preferably, in the present invention, interior oil groove circumferentially is provided with the inside of the interior packing, outside the outer packing
Side is provided with outer oil groove circumferentially；Oil pathway is provided with the end cap, is provided with oil pathway interconnected
Oil inlet and oil outlet, the oil inlet are arranged at the lateral surface of the outer lug boss of end cap, and oil outlet is arranged at the inner side of outer lug boss
Face and the lateral surface of inner convex platform.
Further, in the present invention, the attachment device includes lapping plate and connecting pin, and the lapping plate has mutual
The both ends of adaptation and the both ends for being respectively arranged at same opening, are respectively arranged with through hole on lapping plate, the connecting pin with it is logical
Hole is adapted to.
Further, in the present invention, in order to ensure sealing effectively, the outer packing and interior packing are both provided with coaxial
2, it is provided with and 2 outer matched card slots of packing, the inner convex platform on the clamp being adapted to notch on the sealing brush partition plate
On be provided with the interior packing groove that 2 circles are adapted to 2 interior packings respectively.
Beneficial effect：
The present invention compared with prior art the advantages of it is as follows：
1 while solves the sealing of internal combustion wave rotor radially and circumferentially, sealing effect is more preferably；
2nd, sealing brush and inside and outside packing are made of elastic material, can the deformation caused by thermal expansion with receiving system, really
Guarantor's wave rotor is not easy stuck；
3rd, inside and outside packing does the rotary motion of thickness range in the course of work relative to rubbing surface, rather than traditional packing is close
Envelope along the translational motion in peripheral extent, caused by friction loss be greatly reduced；
4th, the brush ear of sealing brush is designed to symmetrical arc-shaped, and frictional position is located at the middle part of circular arc, and frictional resistance is small,
Sealing brush is less likely to be damaged.
5th, to solve the above problems, the present invention proposes a kind of packing and sealing brush combined type internal combustion wave rotor encapsulating method,
This method, while realize the sealing of internal combustion wave rotor radially and circumferentially, and it is small with frictional resistance, hot environment operating rotor is not
Easily stuck advantage.
6th, wave rotor passage is fired radially with circumferential leakage problem, and the sealing of radial leakage, sealing brush are realized using packing
Realize the sealing circumferentially revealed, cutting sealing brush and packing has elasticity, can be not easy stuck with the thermal expansion of receiving system, rotor.
Brief description of the drawings
Fig. 1 is the overall schematic of the present invention；
Fig. 2 is wave rotor schematic diagram；
Fig. 3 is end cap and its diagrammatic cross-section；
Fig. 4 is outer packing schematic diagram；
Fig. 5 is sealing brush and its diagrammatic cross-section.
Embodiment
Further explanation is done to the present invention below in conjunction with the accompanying drawings.
The present invention is directed to the simultaneous radially and circumferentially leakage problem of internal combustion wave rotor, proposes a kind of packing and sealing brush
Knockdown sealing device.
The wave rotor includes inner cylinder 1b, outer barrel 1a and partition plate 1c, the partition plate 1c along the radially connected outer barrel 1a of wave rotor 1
With inner cylinder 1b, by the region division between outer barrel 1a and inner cylinder 1b into wave rotor passage 1d one by one.Each partition plate 1c institutes are in place
Put, some notches 7 are radially provided with wave rotor outer barrel 1a both ends, notch 7 runs through the wall thickness of outer barrel 1a, and inner cylinder 1b both ends are corresponding
Position such as is provided with the groove 8 of quantity, and the opening of above-mentioned groove 8 is positioned at the outer side surface of inner cylinder 1b, the outside wall surface of the outer barrel 1a
On be provided with outer ring slot 9 circumferentially in the position by close end, and the notch 7 extended to from the end of outer barrel 1a it is outer swollen
In ring recess 9.
End cap 2,3 is installed at 1 both ends of wave rotor respectively, one of them be input end, another be outlet end cap, both structures
Similar, simply respective 10 opening angle of flow ports is different.The outside of end cap 2,3 is provided with outer lug boss 11, and inner side is provided with interior
Boss 13, and inner convex platform 13 and outer lug boss 11 are located at the same side of annulus, the outside wall surface of the inner convex platform 13 are interior with inner cylinder 1b's
Wall is adapted to, and the outside wall surface of the inner convex platform 13 is provided with interior ring slot 14 circumferentially, the internal face 12 of the outer lug boss 11
It is adapted to the outside wall surface of outer barrel 1a；
Inside and outside packing 4,5 is the open metal ring with elastic wear-resisting property, its closure state is annulus, at this time opening
Overlapped using lapping plate 18, overlap hole 19 is also provided with lapping plate 18, overlap hole 19 is configured with connecting pin, for aiding in installing.
6 both ends of sealing brush are 23 structure of clamp, and center section is sealing brush partition plate 21, length and partition plate 1c in wave rotor
The length of 1 radial direction is identical, and sealing brush 6 is wherein provided with card slot 20 on one end clamp 23, for coordinating with outer packing 4.It is described
The side of sealing brush partition plate 21 is provided with the splay elastic brush ear 22 of outward opening along its length, and 22 section of brush ear is pair
The brush valve of the arc-shaped of title, arc angle are more than 90 °, and course of work circular arc middle part contacts friction with inlet and outlet end cap 2,3.
Installation process, towards outside wave rotor, the clamp 23 for not opening card slot 20 is passed through first by the brush ear 22 of sealing brush 6
Cross outer barrel 1a notches 7 to be inserted into the groove 8 of inner cylinder 1b, the clamp 23 for being provided with card slot 20 at this time is stuck in the notch 7 of outer barrel 1a just
Interior, outer packing 5 is installed in outer packing groove 9 after installation is complete by sealing brush 6, is firmly extruded outer packing 5, is at closing
Conjunction state, and the overlap hole 19 on lapping plate 18 is inserted into using connecting pin, outer packing 5 after removing external force is in closure state,
Interior packing 4 is installed in interior packing groove 14 using similar approach at the same time.It should be noted that outer packing 4 and interior packing 5 exist
Manufacturing process will meet that in closed state outer 4 outside diameter outline of packing is less than the internal face diameter of end cap outer lug boss 11, interior packing
5 outside diameter outlines are less than inner cylinder 1b internal face diameters, so may insure outer packing 4 and interior packing during original state in the course of work
5 with elasticity because being in certain open configuration, can closely coordinate with rubbing surface, sealing function be played, when system is heated
When thermal expansion occurs for wave rotor, outer packing 4, interior packing 5 can be tightened to accommodate thermal deformation, but be unlikely to tension and by wave rotor
It is not easy stuck.End cap 2,3 is finally separately mounted to 1 both ends of wave rotor, end cap 2,3 is close to the brush ear 22 of sealing brush 6.Ripple turns
Combustion process occurs in sub- course of work wave rotor passage 1d, wave rotor is heated in combustion, produces thermal expansion, brush ear
22 deform to accommodate thermal deformation.Oil pathway 15 instillation lubricating oil of the course of work timing into end cap 2,3, oil pathway 15 will be sliding
Oil is transported in the outer oil groove 17 of outer packing 5 and the interior oil groove 16 of interior packing 4, and external packing 5 and interior packing 4 are cooled down
And lubrication.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of packing and sealing brush combined type internal combustion wave rotor, it is characterised in that：Including wave rotor (1), end cap (2,3), outer
Packing (5), interior packing (4) and sealing brush (6)；
The wave rotor (1) includes outer barrel (1a), inner cylinder (1b) and partition plate (1c) three parts, and outer barrel (1a) and inner cylinder (1b) are coaxial
And end face, the partition plate (1c) is along wave rotor (1) radially connected outer barrel (1a) and inner cylinder (1b), by outer barrel (1a) and inner cylinder
Region division between (1b) is into wave rotor passage (1d) one by one, and the end of the partition plate (1c) is located at outer barrel (1a) and interior
The inner side of cylinder (1b) end；The end set of outer barrel (1a) corresponding with each partition plate (1c) position on wave rotor (1)
Jagged (7), the end set of inner cylinder (1b) are fluted (8), and above-mentioned notch (7) runs through the wall thickness of outer barrel (1a), above-mentioned groove
(8) opening is located at the outer side surface of inner cylinder (1b)；It is provided with the outside wall surface of the outer barrel (1a) in the position by close end
Outer ring slot (9) circumferentially, and the notch (7) is extended in outer ring slot (9) from the end of outer barrel (1a)；
The end cap (2,3) is annular shape, and inner annular edge is provided with the inner convex platform (13) that a circle is higher than anchor ring, and outer shroud edge is set
The outer lug boss (11) that a circle is higher than anchor ring is equipped with, and inner convex platform (13) and outer lug boss (11) are located at the same side of annulus, it is described
The outside wall surface of inner convex platform (13) is adapted to the internal face of inner cylinder (1b), and the outside wall surface of the inner convex platform (13) is provided with circumferentially
Interior ring slot (14), the internal face (12) of the outer lug boss (11) are adapted to the outside wall surface of outer barrel (1a)；
The outer packing (5) and interior packing (4) are the annular shape with opening, and opening is provided with the connection at connection opening both ends
Device；And outer packing (5) and interior packing (4) have elasticity, opening is opened in a free state, the closing of closure state under shed；
The sealing brush (6) includes sealing brush partition plate (21), and the length of the sealing brush partition plate (21) turns with partition plate (1c) in ripple
The length of sub (1) radial direction is identical, and a clamp (23) is respectively arranged with the both ends of sealing brush partition plate (21) length direction,
One of clamp (23) is adapted to notch (7), another clamp (23) is adapted to groove (8)；The sealing brush partition plate (21)
Side be provided with the splay elastic brush ear (22) of outward opening along its length.
2. a kind of packing according to claim 1 and sealing brush combined type internal combustion wave rotor, it is characterised in that：The partition plate
(1c) is equal to outer barrel (1a) and inner cylinder along the sum of the length of wave rotor (1) axial direction and twice of the length of sealing brush partition plate (21)
The length of (1b).
3. a kind of packing according to claim 1 and sealing brush combined type internal combustion wave rotor, it is characterised in that：Sealing brush
(6) elastic brush ear (22) for two arc-shapeds brush valve and free state when brush valve radian be more than 90 degree.
4. a kind of packing according to claim 1 and sealing brush combined type internal combustion wave rotor, it is characterised in that：It is described outer swollen
Circle (5) and interior packing (4) meet that in closed state outer packing (5) outside diameter is slightly less than outer lug boss (11) in the production process
Internal face diameter, interior packing (4) outside diameter are slightly less than inner cylinder (1b) internal face diameter.
5. a kind of packing according to claim 1 and sealing brush combined type internal combustion wave rotor, it is characterised in that：It is described interior swollen
Interior oil groove (16) circumferentially is provided with the inside of circle (4), outer oil groove circumferentially is provided with the outside of the outer packing (5)
(17)；Be provided with oil pathway (15) on the end cap (2,3), be provided with oil pathway (15) interconnected oil inlet and
Oil outlet, the oil inlet are arranged at the lateral surface of the outer lug boss (11) of end cap (2,3), and oil outlet is arranged at outer lug boss (11)
The lateral surface of medial surface and inner convex platform (13).
6. a kind of packing according to claim 1 and sealing brush combined type internal combustion wave rotor, it is characterised in that：The connection
Device includes lapping plate (18) and connecting pin, and the lapping plate (18) has the both ends being mutually adapted and is respectively arranged at same
The both ends of opening, are respectively arranged with through hole (19) on lapping plate (18), the connecting pin is adapted to through hole (19).
7. a kind of packing and sealing brush combined type internal combustion wave rotor according to any one in claim 1 to 6, its feature
It is：The outer packing (5) and interior packing (4) are both provided with coaxial 2, on the sealing brush partition plate (21) with notch (7)
Be provided with the clamp (23) of adaptation with 2 matched card slots of outer packing (5) (20), be provided with 2 circles on the inner convex platform (13)
The interior packing groove (14) being adapted to respectively with 2 interior packings (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119038.4A CN106930839B (en) | 2017-03-02 | 2017-03-02 | A kind of packing and sealing brush combined type internal combustion wave rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119038.4A CN106930839B (en) | 2017-03-02 | 2017-03-02 | A kind of packing and sealing brush combined type internal combustion wave rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106930839A CN106930839A (en) | 2017-07-07 |
| CN106930839B true CN106930839B (en) | 2018-04-17 |
Family
ID=59423575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710119038.4A Active CN106930839B (en) | 2017-03-02 | 2017-03-02 | A kind of packing and sealing brush combined type internal combustion wave rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930839B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201778842U (en) * | 2009-12-28 | 2011-03-30 | 中国燃气涡轮研究院 | Connecting structure for expansion ring seal retainer |
| US20130170979A1 (en) * | 2012-01-04 | 2013-07-04 | General Electric Company | Double ended brush seal assembly for a compressor |
| CN103133138B (en) * | 2013-01-18 | 2015-07-15 | 南京航空航天大学 | Internal combustion wave rotor based on non-constant combustion and with pressurization function and working method thereof |
| US10393383B2 (en) * | 2015-03-13 | 2019-08-27 | Rolls-Royce North American Technologies Inc. | Variable port assemblies for wave rotors |
| CN106285914A (en) * | 2016-09-08 | 2017-01-04 | 中国航空动力机械研究所 | Wave rotor supercharger and there is the electromotor of this wave rotor supercharger |
-
2017
- 2017-03-02 CN CN201710119038.4A patent/CN106930839B/en active Active
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| Publication number | Publication date |
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| CN106930839A (en) | 2017-07-07 |
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