CN110332059A - A kind of connection structure for single group member high temperature alloy ejector filler and ceramic spray pipe - Google Patents
A kind of connection structure for single group member high temperature alloy ejector filler and ceramic spray pipe Download PDFInfo
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- CN110332059A CN110332059A CN201910340320.4A CN201910340320A CN110332059A CN 110332059 A CN110332059 A CN 110332059A CN 201910340320 A CN201910340320 A CN 201910340320A CN 110332059 A CN110332059 A CN 110332059A
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- spray pipe
- ceramic spray
- high temperature
- group member
- single group
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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
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/52—Injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/97—Rocket nozzles
Abstract
The invention discloses a kind of connection structures for single group member high temperature alloy ejector filler and ceramic spray pipe, comprising: spray panel, soft graphite washer, semicircular ring, screw, spring shim, flat shim, seal joint and ceramic spray pipe；Wherein, spray panel is connected with ejector filler；Flexible graphite mat snare is set to ceramic spray pipe, and an end face and the spray panel of soft graphite washer fit, and other end and the ceramic spray pipe of soft graphite washer fit；The top of ceramic spray pipe fits with spray panel；Semicircular ring is sheathed on the outer surface of ceramic spray pipe, and an end face and the ceramic spray pipe of semicircular ring fit, and the other end of semicircular ring and an end face of seal joint fit；Seal joint, spring shim and flat shim are sheathed on the outer surface of ceramic spray pipe；Screw sequentially passes through spring shim, flat shim and seal joint, is threadedly coupled with spray panel.The present invention solves the problems, such as that the dissimilar material of metal ejector filler and ceramic spray pipe is reliably connected.
Description
Technical field
The invention belongs to the single group member of liquid-propellant rocket engine catalytic decomposition thruster fields more particularly to one kind to be used for
The connection structure of single group member high temperature alloy ejector filler and ceramic spray pipe.
Background technique
Single group member catalytic decomposition thruster be liquid-propellant rocket engine one kind, be widely used in satellite, guided missile, above
In the spacecrafts such as grade.Single group member catalytic decomposition thruster is generally made of solenoid valve, ejector filler and jet pipe (containing catalytic bed), is urged
Change in bed and is filled with granular catalyst.When thruster work, solenoid valve is opened, the propulsion that ejector filler will be concentrated more
Agent is dispersed, and maintains certain flow-pressure drop corresponding relationship, and the propellant of dispersity is contacted with catalyst,
Under the catalytic action of catalyst, chemical breakdown and burning occur for propellant, and discharge chemical energy, generated high temperature and pressure combustion
Gas is by jet pipe Accelerating Removal, to form thrust.
Thruster is catalytically decomposed for single group member, the working environment of jet pipe catalytic bed section is the harshest, and internal is high temperature
Combustion gas.Therefore, in the design of single group member catalytic decomposition thruster, prepare material selected by jet pipe to have it is excellent resistance to
The connection of hot properties, jet pipe and ejector filler also to be all had within the scope of this wider temperature of room temperature to fuel gas temperature compared with
Good sealing characteristics and structural strength.
Fuel gas temperature is about 900 DEG C at the catalytic bed of traditional single group member hydrazine catalytic decomposition thruster, and corresponding jet pipe is adopted
Prepared with high-temperature alloy material, the high temperature alloy of the selected trade mark can the long-term work at 950 DEG C, single group member hydrazine is urged
Changing the actual condition for decomposing thruster has sufficient nargin.Also, jet pipe and ejector filler are used with trade mark high temperature alloy material
Electron-bombardment welding welding can be used in material, connection, and it is preferable close to all having in the range of 900 DEG C that this kind is connected to room temperature
Seal characteristic and structural strength.
But with the development of novel green nontoxic single group member catalytic decomposition thruster, using novel high-energy propellant,
Fuel gas temperature has reached 1600 DEG C or so at catalytic bed, and jet pipe can not continue to need to select high temperature resistance using high temperature alloy
More superior material.Ceramic material becomes due to having preferable high temperature resistance, lower density and preferably cost
For one of comparatively ideal optional material.However, ceramic spray pipe and metal ejector filler due to being dissimilar material, do not simply fail to directly
Electron-bombardment welding connection, or even do not have reliable welded connecting technology still.
Summary of the invention
Technical problem solved by the present invention is having overcome the deficiencies of the prior art and provide a kind of for the conjunction of single group member high temperature
The connection structure of golden ejector filler and ceramic spray pipe, the dissimilar material for solving metal ejector filler and ceramic spray pipe, which is reliably connected, asks
Topic.
The object of the invention is achieved by the following technical programs: one kind is for single group member high temperature alloy ejector filler and pottery
The connection structure of porcelain jet pipe, comprising: spray panel, soft graphite washer, semicircular ring, screw, spring shim, flat shim, sealing
Pressure ring and ceramic spray pipe；Wherein, the upper surface of the spray panel is connected with ejector filler；The flexible graphite mat snare is set
In the outer surface of the ceramic spray pipe, the first lower end surface phase of an end face of the soft graphite washer and the spray panel
Fitting, the upper surface of the power transmission boss of the other end and ceramic spray pipe of the soft graphite washer fits；The pottery
The top of porcelain jet pipe and the second lower end surface of the spray panel fit；The semicircular ring is sheathed on the ceramic spray pipe
The lower end surface of outer surface, the power transmission boss of an end face and ceramic spray pipe for the semicircular ring fits, the semicircular ring
Other end and an end face of the seal joint fit；The seal joint is sheathed on the appearance of the ceramic spray pipe
Face；The spring shim is sheathed on the outer surface of the ceramic spray pipe；The flat shim is sheathed on the appearance of the ceramic spray pipe
Face；The flat shim is between spring shim and seal joint；The screw sequentially passes through spring shim, flat shim and close
Pressure ring is sealed, is threadedly coupled with the spray panel.
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, the spray panel includes
Sleeve and several lug flanges；Wherein, several lug flanges are set to the outer peripheral surface of the sleeve；It is set on the sleeve
It is equipped with first order land plateau slot and second level land plateau slot.
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, the ceramic spray pipe includes
First order cylindrical tube, power transmission boss, second level cylindrical tube, third level cylindrical tube, fourth stage cylindrical tube, converging portion, throat and expansion
Open section；Wherein, first order cylindrical tube, power transmission boss, second level cylindrical tube, third level cylindrical tube, fourth stage cylindrical tube, convergence
Section, throat and expansion segment successively integrally connected.
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, the first order planar table
The internal diameter of rank slot is d11, the groove depth of the first order land plateau slot is H11, the internal diameter of the second level land plateau slot is
d12；Wherein, d11And d12Relationship meet formula: d11-d12≥8.5mm。
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, the soft graphite washer
Outer diameter be D21, internal diameter d22, with a thickness of H21；Wherein, D21And d22Relationship meet formula: 7.5mm≤D21-d22< 8mm.
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, outside the seal joint
Diameter is D41, internal diameter d42；Wherein, D41And d42Relationship meet formula: D41-d42≥15mm。
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, first order cylinder pipe outside diameter
For D51, power transmission boss outer diameter is D52, second level cylinder pipe outside diameter is D53；Wherein, D51、D52And D53Relationship meet it is following public
Formula: D52-D51≥8mm；D52-D53≥7mm。
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, d11、d12、D21、 d22、D51
And D52Relationship meet following formula: d11-D52≥0.5mm；d22> d12> D51；D52≥D21。
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, the semicircular ring outer diameter is
D31, internal diameter d32；Wherein, D31、d32、d42、D52And D53Relationship meet following formula: 0 < d32-D53< 0.1mm；d42-D52
≥0.5mm；D31-d42≥4mm。
In the above-mentioned connection structure for being used for single group member high temperature alloy ejector filler and ceramic spray pipe, H11And H21Relationship meet
Formula: H11-H21≥0.2mm。
Compared with prior art, the present invention has the following advantages:
1) electron-bombardment welding interconnection technique used by existing single group member catalytic decomposition thruster can not be by metal spray
Device is reliably connected with ceramic spray pipe, and connection structure of the invention can effectively solve the problems, such as this；
(2) ceramic spray pipe is applied to single group member catalytic decomposition thruster by the present invention becomes possible, and promotes novel height
The technological progress of the green non-poisonous single group member catalytic decomposition thruster of energy, has given full play to the spy of ceramic material high temperature resistant, low-density
Property, product weight is alleviated, product structure is optimized, reduces product cost；
(3) one of two panels squeezed in panel and ejector filler part needed for squeezing sealing will be threadedly coupled
Spray panel design be integrated, reduce number of parts, simplify structure；
(4) two another panels squeezed in panels do not use the mentality of designing of first panel, be not designed to
Jet pipe one, and it is designed to seal joint and semicircular ring two-stage force transferring structure.The design can be avoided the occurrence of due to ceramic material
It directly bears that failure by shear occurs at the position of screw extruding force in integrated part caused by the material biggish characteristic of brittleness
Situation；Meanwhile during seal joint and the two-stage force transferring structure of semicircular ring may make practical set, seal joint can be from
Nozzle entry penetrates, and is attached after being packed into semicircular ring from two sides, so that the application of the new Joining Structure is not only restricted to
The divergence ratio size of nozzle divergence cone；
(5) spray panel has sleeve sections in design, can include the power transmission boss of jet pipe wherein, and the design is controllable
Soft graphite washer extrusion process used for forming reduces deformation space, improves the deformed compactness of soft graphite washer, make it
With better seal effect；
(6) when the new Joining Structure is assembled in place, nozzle entry end face will be squeezed to spray panel inner face, this sets
Effectively soft graphite washer can be isolated with combustion gas for meter, avoid the oxidative components and soft graphite washer in combustion gas
Learn seal failure caused by reacting.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are general for this field
Logical technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to this hair
Bright limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the connection structure provided in an embodiment of the present invention for single group member high temperature alloy ejector filler and ceramic spray pipe
Schematic diagram；
Fig. 2 (a) is the structural schematic diagram of spray panel provided in an embodiment of the present invention；
Fig. 2 (b) is the sectional view of spray panel provided in an embodiment of the present invention；
Fig. 3 (a) is the structural schematic diagram of soft graphite washer provided in an embodiment of the present invention；
Fig. 3 (b) is the sectional view of soft graphite washer provided in an embodiment of the present invention；
Fig. 4 (a) is the structural schematic diagram of semicircular ring provided in an embodiment of the present invention；
Fig. 4 (b) is the sectional view of semicircular ring provided in an embodiment of the present invention；
Fig. 5 (a) is the structural schematic diagram of seal joint provided in an embodiment of the present invention；
Fig. 5 (b) is the sectional view of seal joint provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of ceramic spray pipe provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The exemplary embodiment opened, it being understood, however, that may be realized in various forms the disclosure without the implementation that should be illustrated here
Example is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the disclosure
Range is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, the reality in the present invention
The feature applied in example and embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the connection structure provided in an embodiment of the present invention for single group member high temperature alloy ejector filler and ceramic spray pipe
Schematic diagram.As shown in Figure 1, it includes: spray face that this, which is used for single group member high temperature alloy ejector filler and the connection structure of ceramic spray pipe,
Plate 1, soft graphite washer 2, semicircular ring 3, screw 4, seal joint 7 and ceramic spray pipe 8.Wherein,
The upper surface 11 of spray panel 1 is connected with ejector filler.
Soft graphite washer 2 is sheathed on the outer surface of ceramic spray pipe 8, and an end face of soft graphite washer 2 is (shown in FIG. 1
Upper surface) it fits with the first lower end surface 12 of spray panel 1, the other end of the soft graphite washer 2 is (shown in FIG. 1
Lower end surface) it fits with the upper surface 821 of the power transmission boss 82 of the ceramic spray pipe 8, the top of the ceramic spray pipe 8 and institute
The second lower end surface 13 for stating spray panel 1 fits.
Semicircular ring 3 is sheathed on the outer surface of ceramic spray pipe 8, an end face of semicircular ring 3 and the power transmission boss of ceramic spray pipe 8
(82) lower end surface 822 fits, and the other end of semicircular ring 3 fits with an end face of seal joint 7；7 sets of seal joint
Set on the outer surface of ceramic spray pipe 8；Screw 4 passes through seal joint 7 and is threadedly coupled with spray panel 1.
As shown in Figure 1, the structure further includes spring shim 5.Wherein, spring shim 5 is sheathed on the appearance of ceramic spray pipe 8
Face；Screw 4 sequentially passes through spring shim 5 and seal joint 7, is threadedly coupled with spray panel 1.
As shown in Figure 1, the structure further includes flat shim 6.Wherein, flat shim 6 is sheathed on the outer surface of ceramic spray pipe 8；It is flat
Gasket 6 is between spring shim 5 and seal joint 7；Screw 4 sequentially passes through spring shim 5, flat shim 6 and seal joint 7,
It is threadedly coupled with the spray panel 1.
As shown in Fig. 2 (a) and Fig. 2 (b), spray panel 1 includes sleeve 13 and several lug flanges 14.Wherein,
Several lug flanges 14 are set to the outer peripheral surface of sleeve 13；First order land plateau slot is provided on sleeve 13
131 and second level land plateau slot 132.
The internal diameter of first order land plateau slot 131 is d11, the groove depth of first order land plateau slot 131 is H11, described
The internal diameter of two-level plane step groove 132 is d12；Wherein, d11And d12Relationship meet formula: d11-d12≥8.5mm。
As shown in fig. 6, ceramic spray pipe 8 includes first order cylindrical tube 81, power transmission boss 82, second level cylindrical tube 83, third
Grade cylindrical tube 84, fourth stage cylindrical tube 85, converging portion 86, throat 87 and expansion segment 88.Wherein,
First order cylindrical tube 81, power transmission boss 82, second level cylindrical tube 83, third level cylindrical tube 84, fourth stage cylindrical tube
85, converging portion 86, throat 87 and expansion segment 88 are sequentially connected and connect, and are integrated connection.
As shown in Fig. 3 (a) and Fig. 3 (b), the structure of soft graphite washer 2 is complete cylindrical type annulus, outer diameter D21,
Internal diameter is d22, with a thickness of H21；Wherein, D21And d22Relationship meet formula: 7.5mm≤D21-d22< 8mm.
As shown in Fig. 4 (a) and Fig. 4 (b), semicircular ring 3 is to be divided into two panels identical by complete cylindrical type annulus
Half loop, outer diameter D31, internal diameter d32。
As shown in Fig. 5 (a) and Fig. 5 (b), the structure of seal joint 7 is complete cylindrical type annulus, equal in annulus end face
The multiple unthreaded holes for across screw 4 of cloth, outer diameter D41, internal diameter d42；Wherein, D41And d42Relationship meet formula:
D41-d42≥15mm.The unthreaded hole of seal joint 7 is consistent with the screw thread hole number of spray panel 1, and positional relationship is corresponding.
As shown in fig. 6, ceramic spray pipe 8 includes multistage cylindrical tube, power transmission boss, converging portion, throat and expansion segment, first
Grade cylinder pipe outside diameter is D51, power transmission boss outer diameter is D52, second level cylinder pipe outside diameter is D53.Wherein, D51、D52And D53Pass
System meets following formula: D52-D51≥8mm；D52-D53≥7mm。
Soft graphite washer 2 is installed between spray panel 1 and the power transmission boss upper surface of ceramic spray pipe 8；Semicircular ring 3
It is installed between 7 upper surface of seal joint and the power transmission boss lower surface of ceramic spray pipe 8；Screw 4 passes through spring shim 5, plain cushion
The unthreaded hole of piece 6 and seal joint 7 is connect with the tapped through hole of spray panel 1, by tighten screw thread apply pressure, by pressure from
Screw 4 is transferred to flexible stone through the power transmission boss of spring shim 5, flat shim 6, seal joint 7, semicircular ring 3 and ceramic spray pipe 8
Ink pad circle 2, under the action of extruding force, soft graphite washer 2 is by compressive deformation, to play sealing function.
As shown in Figure 1,8 power transmission boss outer diameter D of ceramic spray pipe52, first order land plateau slot internal diameter in spray panel 1
d11, first order land plateau groove depth H in spray panel 111With the thickness H of soft graphite washer 221Between relationship should meet public affairs
Formula d11-D52>=0.5mm and formula H11-H21>=0.2mm, in this way setting can control soft graphite washer extrusion process used for forming,
Deformation space is reduced, the deformed compactness of soft graphite washer is promoted, makes it have better seal effect.
7 internal diameter d of seal joint42With 8 power transmission boss outer diameter D of ceramic spray pipe52Between relationship should meet formula d42-D52≥
0.5mm, in this way setting can enable seal joint penetrate from nozzle entry, be attached after being packed into semicircular ring 3 from two sides, to make
The application for obtaining the new Joining Structure is not only restricted to the divergence ratio size of nozzle divergence cone.
2 thickness H of soft graphite washer21Selection should meet and reach compression seal effect after, the first order of ceramic spray pipe 8
Cylindrical tube D51End face and 1 second level land plateau slot d of spray panel12End face fitting, allows to flexible graphite mat effectively
Circle is isolated with combustion gas, is sealed and is lost caused by avoiding oxidative components and soft graphite washer in combustion gas from chemically reacting
Effect.
Spray panel 1, soft graphite washer 2, semicircular ring 3, the power transmission face shape of seal joint 7 and jet pipe 8 are annulus
The combination of shape, polygon, multistage arc or above-mentioned form.
Electron-bombardment welding interconnection technique used by existing single group member catalytic decomposition thruster can not be by metal ejector filler
It is reliably connected with ceramic spray pipe, the connection structure of the present embodiment can effectively solve the problems, such as this；The present embodiment is by ceramic spray pipe application
Become possible in single group member catalytic decomposition thruster, and promotes the green non-poisonous single group member catalytic decomposition thruster of novel high-energy
Technological progress, given full play to ceramic material high temperature resistant, the characteristic of low-density, alleviated product weight, optimize product knot
Structure reduces product cost；The present embodiment by be threadedly coupled squeeze sealing needed for two squeeze panels in a panels with
The spray panel design of one of ejector filler part is integrated, and is reduced number of parts, is simplified structure.
Another panel that two of the present embodiment squeeze in panel does not use the mentality of designing of first panel, not
Be designed to jet pipe one, and be designed to seal joint and semicircular ring two-stage force transferring structure, the design can avoid the occurrence of by
It is cut at the position for directly bearing screw extruding force in the integrated part caused by the biggish characteristic of ceramic material brittleness
Cut through bad situation；Meanwhile during seal joint and the two-stage force transferring structure of semicircular ring may make practical set, sealing pressure
Ring can be penetrated from nozzle entry, be attached after being packed into semicircular ring from two sides, so that the application of the new Joining Structure
It is not only restricted to the divergence ratio size of nozzle divergence cone.
The spray panel of the present embodiment has sleeve sections in design, can include the power transmission boss of jet pipe wherein, the design
Controllable soft graphite washer extrusion process used for forming, reduces deformation space, improves the deformed densification of soft graphite washer
Property, make it have better seal effect；When the new Joining Structure is assembled in place, nozzle entry end face will be squeezed to spray
Effectively soft graphite washer can be isolated with combustion gas for panel inner face, the design, avoid oxidative components and flexibility in combustion gas
Seal failure caused by graphite gasket chemically reacts.
Embodiment described above is the present invention more preferably specific embodiment, and those skilled in the art is at this
The usual variations and alternatives carried out within the scope of inventive technique scheme should be all included within the scope of the present invention.
Claims (10)
1. a kind of connection structure for single group member high temperature alloy ejector filler and ceramic spray pipe, characterized by comprising: spray face
Plate (1), soft graphite washer (2), semicircular ring (3), screw (4), spring shim (5), flat shim (6), seal joint (7) and pottery
Porcelain jet pipe (8)；Wherein,
The upper surface (11) of the spray panel (1) is connected with ejector filler；
The soft graphite washer (2) is sheathed on the outer surface of the ceramic spray pipe (8), and the one of the soft graphite washer (2)
End face and the first lower end surface (12) of the spray panel (1) fit, the other end of the soft graphite washer (2) and institute
The upper surface (821) for stating the power transmission boss (82) of ceramic spray pipe (8) fits；The top of the ceramic spray pipe (8) and the spray
The second lower end surface (13) of note panel (1) fits；
The semicircular ring (3) is sheathed on the outer surface of the ceramic spray pipe (8), an end face of the semicircular ring (3) and the pottery
The lower end surface (822) of the power transmission boss (82) of porcelain jet pipe (8) fits, the other end of the semicircular ring (3) and the sealing
One end face of pressure ring (7) fits；
The seal joint (7) is sheathed on the outer surface of the ceramic spray pipe (8)；
The spring shim (5) is sheathed on the outer surface of the ceramic spray pipe (8)；
The flat shim (6) is sheathed on the outer surface of the ceramic spray pipe (8)；
The flat shim (6) is located between spring shim (5) and seal joint (7)；
The screw (4) sequentially passes through spring shim (5), flat shim (6) and seal joint (7), with spray panel (1) spiral shell
Line connection.
2. the connection structure according to claim 1 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
Be: the spray panel (1) includes sleeve (13) and several lug flanges (14)；Wherein,
Several lug flanges (14) are set to the outer peripheral surface of the sleeve (13)；
First order land plateau slot (131) and second level land plateau slot (132) are provided on the sleeve (13).
3. the connection structure according to claim 1 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
Be: the ceramic spray pipe (8) includes first order cylindrical tube (81), power transmission boss (82), second level cylindrical tube (83), the third level
Cylindrical tube (84), fourth stage cylindrical tube (85), converging portion (86), throat (87) and expansion segment (88)；Wherein,
First order cylindrical tube (81), power transmission boss (82), second level cylindrical tube (83), third level cylindrical tube (84), fourth stage circle
Column tube (85), converging portion (86), throat (87) and expansion segment (88) successively integrally connected.
4. the connection structure according to claim 2 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
Be: the internal diameter of the first order land plateau slot (131) is d11, the groove depth of the first order land plateau slot (131) is
H11, the internal diameter of the second level land plateau slot (132) is d12；Wherein, d11And d12Relationship meet formula: d11-d12≥
8.5mm。
5. the connection structure according to claim 4 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
Be: the outer diameter of the soft graphite washer (2) is D21, internal diameter d22, with a thickness of H21；Wherein, D21And d22Relationship meet
Formula: 7.5mm≤D21-d22< 8mm.
6. the connection structure according to claim 5 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
Be: the outer diameter of the seal joint (7) is D41, internal diameter d42；Wherein, D41And d42Relationship meet formula: D41-d42≥
15mm。
7. the connection structure according to claim 6 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
Be: first order cylinder pipe outside diameter is D51, power transmission boss outer diameter is D52, second level cylinder pipe outside diameter is D53；Wherein, D51、D52
And D53Relationship meet following formula:
D52-D51≥8mm；
D52-D53≥7mm。
8. the connection structure according to claim 7 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
It is: d11、d12、D21、d22、D51And D52Relationship meet following formula:
d11-D52≥0.5mm；
d22> d12> D51；
D52≥D21。
9. the connection structure according to claim 8 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
Be: semicircular ring (3) outer diameter is D31, internal diameter d32；Wherein, D31、d32、d42、D52And D53Relationship meet following formula:
0 < d32-D53< 0.1mm；
d42-D52≥0.5mm；
D31-d42≥4mm。
10. the connection structure according to claim 9 for single group member high temperature alloy ejector filler and ceramic spray pipe, feature
It is: H11And H21Relationship meet formula: H11-H21≥0.2mm。
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| CN201910340320.4A CN110332059B (en) | 2019-04-25 | 2019-04-25 | Connecting structure for single-component high-temperature alloy injector and ceramic spray pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115073200A (en) * | 2022-05-19 | 2022-09-20 | 北京控制工程研究所 | Butt-joint sealing structure and method for ceramic reaction chamber and high-temperature alloy injector |
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