CN106930839A - 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
- CN106930839A CN106930839A CN201710119038.4A CN201710119038A CN106930839A CN 106930839 A CN106930839 A CN 106930839A CN 201710119038 A CN201710119038 A CN 201710119038A CN 106930839 A CN106930839 A CN 106930839A
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- CN
- China
- Prior art keywords
- packing
- wave rotor
- sealing brush
- sealing
- brush
- 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.)
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Classifications
-
- 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.The main structure such as including wave rotor, end cap, inside and outside packing, sealing brush of packing and sealing brush combined type internal combustion wave rotor sealing device, inside and outside packing prevents external leakage of the wave rotor inner high voltage gas to 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 can be used in aviation field other and is related to the sealing of multi-faceted leakage system simultaneously.
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, with increasing substantially the potential of propulsion system performance
Advantage, but due to the course of work, its main part wave rotor is in rotation status, allows for leakage problem as its intrinsic skill
Art obstacle.And its course of work is generally using pinking or the Quick-pressurizing combustion mode of detonation, the pressure that combustion process is produced
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 for wherein leaking 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, internal combustion is influenceed
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
Internal combustion wave rotor and method of work with function of increasing pressure in unsteady burning ", the patent No.：ZL201310018405.3, proposes
A kind of internal combustion wave rotor structure and method based on unsteady burning, are set in the system between wave rotor end face and end cap
One-level comb tooth sealing structure, can partly suppress the leakage of radial direction.Other non-contact seals are in the larger environment of pressure difference
Under, it is difficult to realize preferable sealing effectiveness, although and non-contact seals good sealing effect, have that frictional resistance is big, rotor is easy
Stuck the characteristics of, such as piston ring packing that piston engine is used etc..
The content of the invention
Goal of the invention：Based on the deficiencies in the prior art, the present invention provides a kind of packing and turns with sealing brush combined type internal combustion ripple
Son, it is not good and easily bring the technology of the stuck adverse consequences of rotor for solving sealing effectiveness at internal combustion wave rotor end face and end cap
Problem.
Technical scheme：
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 the part of dividing plate three, and outer barrel and inner cylinder be coaxial and end face, the dividing 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 dividing plate is located at the inner side of outer barrel and inner cylinder end；The outer barrel corresponding with each dividing plate position on wave rotor
End sets jagged, inner cylinder end and sets fluted, and through the wall thickness of outer barrel, the opening of above-mentioned groove is located at above-mentioned breach
The outer side surface of inner cylinder；The position near end is provided with outer ring slot circumferentially, and institute in the outside wall surface of the outer barrel
Breach is stated to be extended in outer ring slot from the end of outer barrel；
The end cap is annular shape, and inner annular edge is provided with inner convex platform of the circle higher than anchor ring, and outer shroud edge is provided with
Higher than the outer lug boss of anchor ring, and inner convex platform and outer lug boss are located at the same side of annulus to one circle, the outside wall surface of the inner convex platform with
The internal face adaptation of inner cylinder, the outside wall surface of the inner convex platform is 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 the connection dress at connection opening two ends is provided with opening
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 dividing plate, and the length and dividing plate of the sealing brush dividing plate are in wave rotor radial direction
Length is identical, and a dop is respectively arranged with the two ends in sealing brush septum plate length direction, and one of dop is adapted to breach,
Another dop is adapted to groove；The side of the sealing brush dividing plate is provided with the splay bullet of outward opening along its length
Property brush ear.Sealing brush is installed on wave rotor by dop, 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 dop and end cap that have draw-in groove, 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, with 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 the friction produced by the circumferential overall translation of packing, therefore compared with traditional expansion ring seale,
Frictional force is greatly reduced.
Further, in the present invention, the dividing plate is along the length of wave rotor axial direction and the length of the sealing brush dividing plate of twice
Degree sum is equal to the length of outer barrel and inner cylinder.Dividing 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, brush valve when the brush ear of sealing brush is two brush valves of arc-shaped and free state
Radian is more than 90 degree.After assembling, brush ear contacts friction with end cap and causes circumferentially there is 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, outward in manufacturing process
Packing external diameter is slightly less than the internal face diameter of outer lug boss, and interior packing external 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-out, the oil inlet are arranged at the lateral surface of the outer lug boss of end cap, and oil-out 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 means include lapping plate and connecting pin, and the lapping plate has mutual
The two ends of adaptation and be respectively arranged at the two ends of same opening, be 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 provided with coaxial
2, the draw-in groove matched with 2 outer packings, the inner convex platform are provided with the dop being adapted to breach on the sealing brush dividing plate
On be provided with the interior packing groove that 2 circles are adapted to 2 interior packings respectively.
Beneficial effect：
Present invention advantage compared with prior art is as follows：
1st, while solving the sealing radially and circumferentially of internal combustion wave rotor, sealing effectiveness is more preferably；
2nd, sealing brush and inside and outside packing are made using elastomeric material, can be with deformation of the receiving system caused by thermal expansion, really
Guarantor's wave rotor is difficult stuck；
3rd, inside and outside packing does the rotary motion of thickness range in the course of work relative to rubbing surface, close rather than traditional packing
Along the translational motion in peripheral extent, the friction loss for causing is greatly reduced envelope；
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 not allowed fragile.
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,
The method, while the sealing radially and circumferentially of internal combustion wave rotor is realized, and it is small with frictional resistance, hot environment operating rotor is not
Easily stuck advantage.
6th, combustion wave rotor passage radially with circumferential leakage problem, the sealing of radial leakage, sealing brush are realized using packing
The sealing of circumferential leakage is realized, cutting sealing brush and packing has elasticity, can be difficult stuck with the thermal expansion of receiving system, rotor.
Brief description of the drawings
Fig. 1 is overall schematic of the invention；
Fig. 2 is wave rotor schematic diagram；
Fig. 3 is end cap and its generalized section；
Fig. 4 is outer packing schematic diagram；
Fig. 5 is sealing brush and its generalized section.
Specific embodiment
The present invention is done below in conjunction with the accompanying drawings further is explained.
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 is comprising inner cylinder 1b, outer barrel 1a and dividing plate 1c, the dividing 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 dividing plate 1c institutes are in place
Put, be radially provided with some breach 7 at wave rotor outer barrel 1a two ends, breach 7 runs through the wall thickness of outer barrel 1a, and inner cylinder 1b two ends are corresponding
Position such as is provided with the groove 8 of quantity, the opening of above-mentioned groove 8 positioned at inner cylinder 1b outer side surface, the outside wall surface of the outer barrel 1a
On the position near end is provided with outer ring slot 9 circumferentially, and the breach 7 extended to from the end of outer barrel 1a it is outer swollen
In ring recess 9.
The two ends of wave rotor 1 are respectively mounted end cap 2,3, and one of them is entrance point, another is outlet end cap, both structures
Similar, simply the opening angle of respective flow ports 10 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 is interior with inner cylinder 1b
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
Outside wall surface with outer barrel 1a is adapted to；
Inside and outside packing 4,5 is the open metal ring with elastic wear-resisting property, and its closure state is annulus, now at opening
Overlapped using lapping plate 18, overlap joint hole 19 is also provided with lapping plate 18, overlap joint hole 19 is configured with connecting pin, for aiding in installing.
The two ends of sealing brush 6 are the structure of dop 23, and center section is sealing brush dividing plate 21, length and dividing plate 1c in wave rotor
The length of 1 radial direction is identical, and draw-in groove 20 is provided with the wherein one end dop 23 of sealing brush 6, for coordinating with outer packing 4.It is described
The side of sealing brush dividing plate 21 is provided with the splay elastic brush ear 22 of outward opening along its length, and the section of brush ear 22 is right
The brush valve of the arc-shaped of title, arc angle is more than 90 °, and course of work circular arc middle part contacts friction with end cap 2,3 is imported and exported.
First by the brush ear 22 of sealing brush 6 towards outside wave rotor, the dop 23 that will not open draw-in groove 20 is passed through installation process
Cross in the groove 8 of the insertion inner cylinder of outer barrel 1a breach 7 1b, the dop 23 for being now provided with draw-in groove 20 is stuck in the breach 7 of outer barrel 1a just
It is interior, after the installation of sealing brush 6, outer packing 5 is installed in outer packing groove 9, outer packing 5 is firmly extruded, it is at closing
Conjunction state, and using the overlap joint hole 19 on connecting pin insertion lapping plate 18, outer packing 5 is in closure state after making to remove external force,
Interior packing 4 is arranged in interior packing groove 14 using similar approach simultaneously.It should be noted that outer packing 4 and interior packing 5 exist
Manufacturing process will meet in closed state, and the external diameter outline of outer packing 4 is less than the internal face diameter of end cap outer lug boss 11, interior packing
5 external 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, closely can coordinate with rubbing surface, sealing function is played, when system is heated
When wave rotor occurs thermal expansion, outer packing 4, interior packing 5 can be tightened up to accommodate thermal deformation, but be unlikely to tension and by wave rotor
It is difficult stuck.End cap 2,3 is finally separately mounted to the two ends of wave rotor 1, end cap 2,3 is close to the brush ear 22 of sealing brush 6.Ripple turns
There is combustion process in sub- course of work wave rotor passage 1d, wave rotor is heated in combustion, produce thermal expansion, brush ear
22 deform to accommodate thermal deformation.To the instillation lubricating oil of oil pathway 15 in end cap 2,3, oil pathway 15 will be sliding for course of work timing
Oil is transported in the interior oil groove 16 of the outer oil groove 17 of outer packing 5 and 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, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, 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 (4), interior packing (5) and sealing brush (6)；
The wave rotor (1) includes outer barrel (1a), inner cylinder (1b) and the part of dividing plate (1c) three, and outer barrel (1a) and inner cylinder (1b) are coaxial
And end face, the dividing plate (1c) 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 dividing plate (1c) is located at outer barrel (1a) and interior
The inner side of cylinder (1b) end；The end of outer barrel (1a) corresponding with each dividing plate (1c) position is set on wave rotor (1)
The end of jagged (7), inner cylinder (1b) sets fluted (8), above-mentioned breach (7) through outer barrel (1a) wall thickness, above-mentioned groove
(8) opening is located at the outer side surface of inner cylinder (1b)；It is provided with the position near end in the outside wall surface of the outer barrel (1a)
Outer ring slot (9) circumferentially, and the breach (7) 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 inner convex platform (13) of the circle higher than anchor ring, and outer shroud edge sets
Outer lug boss (11) of the circle higher than anchor ring is equipped with, and inner convex platform (13) and outer lug boss (11) are positioned 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) is adapted to the outside wall surface of outer barrel (1a)；
The outer packing (4) and interior packing (5) are the annular shape with opening, and the connection at connection opening two ends is provided with opening
Device；And outer packing (4) and interior packing (5) are with elasticity, annulus opening is opened in a free state, and annulus is opened under closure state
Mouth closing；
The sealing brush (6) includes sealing brush dividing plate (21), and length and the dividing plate (1c) of the sealing brush dividing plate (21) turn in ripple
The length of sub (1) radial direction is identical, and a dop (23) is respectively arranged with the two ends of sealing brush dividing plate (21) length direction,
One of dop (23) is adapted to breach (7), and another dop (23) is adapted to groove (8)；The sealing brush dividing 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 dividing plate
(1c) is equal to outer barrel (1a) and inner cylinder along the length of wave rotor (1) axial direction with the length sum of the sealing brush dividing plate (21) of twice
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) radian of brush valve is more than 90 degree when brush ear (22) is two brush valves of arc-shaped and free state.
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 (4) and interior packing (5) meet in closed state in manufacturing process, and outer packing (5) external diameter is slightly less than outer lug boss (11)
Internal face diameter, interior packing (5) external diameter is 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 packing (5) outside is provided with outer oil groove circumferentially
(17)；Be provided with oil pathway (15) on the end cap (2,3), be provided with oil pathway (15) interconnected oil inlet and
Oil-out, the oil inlet is arranged at the lateral surface of the outer lug boss (11) of end cap (2,3), and oil-out is arranged at outer lug boss (11)
The lateral surface of medial surface and inner convex platform (12).
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) is with the two ends being mutually adapted and is respectively arranged at same
The two 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 according to any one in claim 1 to 6 and sealing brush combined type internal combustion wave rotor, its feature
It is：The outer packing (4) and interior packing (5) are provided with coaxial 2, suitable with breach (7) on the sealing brush dividing plate (6)
The draw-in groove (20) matched with 2 outer packings (4) is provided with the dop (23) matched somebody with somebody, 2 circles point are provided with the inner convex platform (13)
The interior packing groove (14) not being adapted to 2 interior packings (5).
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 true CN106930839A (en) | 2017-07-07 |
| CN106930839B CN106930839B (en) | 2018-04-17 |
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ID=59423575
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| 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 |
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| CN (1) | CN106930839B (en) |
Citations (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 |
| CN103133138A (en) * | 2013-01-18 | 2013-06-05 | 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 |
| CN103195739A (en) * | 2012-01-04 | 2013-07-10 | 通用电气公司 | Double ended brush seal assembly for a compressor |
| US20160265783A1 (en) * | 2015-03-13 | 2016-09-15 | 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
Patent Citations (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 |
| CN103195739A (en) * | 2012-01-04 | 2013-07-10 | 通用电气公司 | Double ended brush seal assembly for a compressor |
| CN103133138A (en) * | 2013-01-18 | 2013-06-05 | 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 |
| US20160265783A1 (en) * | 2015-03-13 | 2016-09-15 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106930839B (en) | 2018-04-17 |
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