CN107762664A - A kind of nozzle arrangements with support and guide functions - Google Patents
A kind of nozzle arrangements with support and guide functions Download PDFInfo
- Publication number
- CN107762664A CN107762664A CN201711155342.0A CN201711155342A CN107762664A CN 107762664 A CN107762664 A CN 107762664A CN 201711155342 A CN201711155342 A CN 201711155342A CN 107762664 A CN107762664 A CN 107762664A
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- China
- Prior art keywords
- nozzle arrangements
- support
- guide functions
- nozzle
- close
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- 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
- 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
Abstract
The present invention solves traditional ejector filler soldering rear nozzle annular gap reduction and problem of non-uniform, there is provided a kind of nozzle arrangements that nozzle annular gap can be controlled to make jet expansion uniform flow again in limited distance.The nozzle arrangements of the present invention are stepped cylinder body, and stepped throughhole is provided with inside nozzle arrangements；The less part of nozzle arrangements outer radius is as cantilever；The outer surface of the cantilever is provided with fairshaped ribs；The nozzle arrangements internal step scalariform through hole is close to one end of ribs as the port of export；The other end is as entrance point, and the other end is as entrance point；The ribs and the minimum range of the port of export are the 1/3~2/3 of cantilever total length.
Description
Technical field
The present invention relates to a kind of nozzle arrangements with support and guide functions, belong to field of combustion technology.
Background technology
Double elements liquid-propellant rocket engine ejector filler typically has the cavity configuration of three bottom two, and three bottoms refer to a bottom, two bottoms, three bottoms,
Two chambers refer to that a bottom forms fuel cavity with two bottoms, and two bottoms and three bottoms form oxygen chamber.Two bottoms separate fuel cavity and oxygen chamber, ejector filler
The upper multiple nozzles arranged according to certain rules of installation.
Nozzle is a kind of atomising device, its effect be by propellant by certain mixing ratio spray into combustion chamber complete spray,
Atomization, the critical elements of mixing.The designing quality and machining accuracy of nozzle have pole to efficiency of combustion and combustion stability and life-span
Big influence.At present, in liquid-propellant rocket engine field, conventional is double elements coaxial DC formula nozzle, i.e. gas-liquid or liquid liquid,
Mainly it is made up of liquid oxygen nozzle and fuel nozzle, including general liquid oxygen nozzle, outside, liquid oxygen passes through higher fuel nozzle with fuel
Injection rate difference produce shear action make liquid oxygen and fuel atomization, mixing, and organizationally efficient burning.
The connection between oxygen nozzle and fuel nozzle and oxygen nozzle and two bottoms, fuel nozzle and a bottom is generally by pricker
It is soldered into.The problem of presently, there are be：For ejector filler after the completion of soldering, the annular gap between oxygen nozzle and fuel nozzle is uneven
Even, part annular gap is significantly less than design load, causes local mixture ratio higher, highly shortened the inwall longevity of combustion chamber
Life.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, solves ejector filler soldering rear nozzle annular
Gap reduces and problem of non-uniform, there is provided a kind of in limited distance nozzle annular gap can be controlled to make nozzle again
The uniform nozzle arrangements of rate of discharge.
The object of the invention is achieved by the following technical programs：
A kind of nozzle arrangements with support and guide functions, the nozzle arrangements are stepped cylinder body, nozzle arrangements
Inside is provided with stepped throughhole；The less part of nozzle arrangements outer radius is as cantilever；The outer surface of the cantilever is provided with
Fairshaped ribs；The nozzle arrangements internal step scalariform through hole is close to one end of ribs as the port of export；The other end is made
For entrance point.
The above-mentioned nozzle arrangements with support and guide functions, the fairshaped ribs are that cross section is drops
Cylinder, or, cross section is oval cylinder, or, cross section be both ends be trapezoidal cylinder among circular arc.
The above-mentioned nozzle arrangements with support and guide functions, the outer surface of the cantilever is at least provided with 3 ribs, institute
It is circumferentially uniform along cantilever in the outer surface of cantilever to state ribs.
The minimum range of the above-mentioned nozzle arrangements with support and guide functions, the ribs and the port of export is total for cantilever
The 1/3~2/3 of length.
The above-mentioned nozzle arrangements with support and guide functions, the cross section of the drops is by 4 tangent circular arc groups
Into.
The above-mentioned nozzle arrangements with support and guide functions, the both ends are to be trapezoidal cross section among circular arc by 2
Individual circular arc and two rectilinear(-al)s.
The above-mentioned nozzle arrangements with support and guide functions, 4 tangent circular arcs, wherein axial along nozzle arrangements
Two arc radius in direction are equal.
The above-mentioned nozzle arrangements with support and guide functions, 4 tangent circular arcs, close to the import of nozzle arrangements
The arc radius at end is more than the arc radius of the port of export close to nozzle arrangements.
The above-mentioned nozzle arrangements with support and guide functions, 2 circular arcs, close to the circle of the entrance point of nozzle arrangements
Arc radius is more than the arc radius of the port of export close to nozzle arrangements.
The above-mentioned nozzle arrangements with support and guide functions, 4 tangent circular arcs, close to the import of nozzle arrangements
The arc radius at end, with, close to nozzle arrangements the port of export arc radius ratio be 2~10.
The above-mentioned nozzle arrangements with support and guide functions, 2 circular arcs, close to the circle of the entrance point of nozzle arrangements
Arc radius, with, close to nozzle arrangements the port of export arc radius ratio be 2~10.
The above-mentioned nozzle arrangements with support and guide functions, 4 tangent circular arcs, along nozzle arrangements axial direction
Arc radius, with, close to nozzle arrangements entrance point arc radius ratio be 4~10.
The above-mentioned nozzle arrangements with support and guide functions, height and the external fuel nozzle arrangements of the ribs
Internal diameter matches.
The above-mentioned nozzle arrangements with support and guide functions, nozzle arrangements use 1Cr18Ni9Ti materials, are integrally formed.
The above-mentioned nozzle arrangements with support and guide functions, the radius of the entrance point are less than the port of export of nozzle arrangements
Radius.
The present invention has the advantages that compared to prior art：
(1) support rib structure of the invention, coordinate for the gap of nozzle arrangements and external fuel nozzle arrangements, solve
Ejector filler soldering rear nozzle annular gap reduces and problem of non-uniform；
(2) ribs of the invention use streamlined design, keep jet expansion discharge uniformity constant；
(3) nozzle arrangements of the invention are adapted to high temperature, high pressure and the severe extreme environment of vibration environment, and work can
Lean on, reach the purpose repeatedly used；
(4) nozzle arrangements of the invention are formed in one, low using maturing material, cost；
(5) support rib structure of the invention can solve the problems, such as the body portion ablation of burner or hot line, improve burner
Reliability and durability.
Brief description of the drawings
Fig. 1 be nozzle arrangements A-A of the present invention to sectional view；
Fig. 2 is the schematic diagram of nozzle arrangements of the present invention；
Fig. 3 is diagrammatic cross-sections of the nozzle arrangements P of the present invention to the first embodiment of ribs；
Fig. 4 is diagrammatic cross-sections of the nozzle arrangements P of the present invention to the second embodiment of ribs；
Fig. 5 is diagrammatic cross-sections of the nozzle arrangements P of the present invention to the 3rd embodiment of ribs.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with implementation of the accompanying drawing to the present invention
Mode is described in further detail.
The nozzle arrangements of the present invention can use as liquid oxygen nozzle, be designed to the structure of ribs 4.In burner
In in use, liquid oxygen nozzle and fuel nozzle are used cooperatively.Fuel nozzle is enclosed on the cantilever 1 of the nozzle arrangements of the present invention.This
Invention ensure that nozzle annular gap uniformity from structure design, to reduce flow resistance, make nozzle exit in limited distance
Fuel flow rate is evenly distributed, and ensures that jet expansion fuel flow rate is evenly distributed, good temperature environment is created for Inner Wall of Combustion Chamber.
Ribs 4 disturb smaller closer to upstream to nozzle exit, and the flow of jet expansion is more uniform, but to nozzle
The annular gap control of outlet is more unfavorable；Conversely, ribs 4, closer to downstream, controlling the annular gap of jet expansion more has
Profit, it is more unfavorable to rate of discharge uniformity.
Simultaneously to make jet expansion flow distribution evenly, along fluid flow direction, the arc radius in the downstream of ribs 4 should
Less than the arc radius of upstream.By adjusting the position of ribs 4 and the arc radius of drop shape, nozzle exit is realized
Uniformity of flow and the Optimum Matching of annular gap.The outer surface of ribs 4 is arc, it is possible to achieve with outer nozzle inner surface
Good contact.More effectively control annular gap uniformity.Height by adjusting ribs 4 adjusts the L in Fig. 1, realizes full
The minimum annular gap of sufficient design requirement；The height of ribs 4 and the internal diameter of external fuel nozzle arrangements match.
The present invention has the nozzle arrangements of support and guide functions, as shown in Fig. 2 nozzle arrangements are stepped cylinder body,
The inside of nozzle arrangements is provided with stepped throughhole, and through hole is close to one end of ribs 4 as the port of export 3；The other end is as import
End 2.The radius of entrance point 2 is less than the radius of the port of export 3 of nozzle arrangements, and liquid oxygen is flowed into by entrance point 2, flowed out by the port of export 3.
The less part of nozzle arrangements outer radius is as cantilever 1；The outer surface of the cantilever 1 is provided with fairshaped branch
Stake rib 4；The fairshaped ribs 4 are the cylinders that cross section is drops, or, cross section is oval cylinder, or, transversal
Face be both ends be trapezoidal cylinder among circular arc；The minimum range of ribs 4 and the port of export 3 for the total length of cantilever 1 1/3~
2/3.The total length of cantilever 1 is 8mm~20mm；The total length of nozzle arrangements is 25mm~80mm.
In the embodiment of the present invention, the outer surface of cantilever 1 is at least provided with 3 ribs 4, and the ribs 4 are in the outer of cantilever 1
Surface is circumferential uniform along cantilever 1.As shown in figure 1, using at least three ribs 4, on the one hand it is easy to nozzle arrangements and external fuel
The gap of nozzle arrangements coordinates, when on the other hand being deformed in ejector filler soldering rear nozzle annular gap, each ribs 4
Stress is more uniformly distributed.
First embodiment, as shown in Figure 3.Fairshaped ribs 4 be cross section be drops cylinder, the post of drops
The cross section of body is made up of 4 tangent circular arcs, in 4 tangent circular arcs, middle two circular arcs along nozzle arrangements axial direction
Radius is equal.In 4 circular arcs in cross section, adjacent two tangent, to form a continuous curve.Close to nozzle arrangements
Entrance point 2 arc radius be more than close to nozzle arrangements the port of export 3 arc radius.Close to nozzle knot in first embodiment
The arc radius of the entrance point 2 of structure, with, close to nozzle arrangements the port of export 3 arc radius ratio be 2~10.Along nozzle
The arc radius of structure axial direction, with, close to nozzle arrangements entrance point 2 arc radius ratio be 4~10.R1 circle
The heart is located at 1/2 position of the length of cantilever 1；R1 and R3 ratio is that 5, R1 radiuses are 1mm, and R2 radiuses are 5mm, and R3 radiuses are
0.2mm.The total length of cantilever 1 is 10mm；The total length of nozzle arrangements is 25mm.
Second embodiment, as shown in Figure 4.Fairshaped ribs 4 are that cross section is Elliptic Cylinder, are that a kind of shape is relative
Succinct fairshaped ribs 4.
3rd embodiment, as shown in Figure 5.The fairshaped cross section of ribs 4 be both ends be trapezoidal post among circular arc
Body；It is close with the shape of second embodiment i.e. by 2 circular arcs and two rectilinear(-al)s, also form a kind of fairshaped ribs
4.It is more than the arc radius of the port of export 3 close to nozzle arrangements close to the arc radius of the entrance point 2 of nozzle arrangements.3rd implements
The arc radius of the entrance point 2 of close nozzle arrangements in example, with the ratio of the arc radius of the port of export 3 of close nozzle arrangements
For 2~10.In 3rd embodiment, the arc radius close to the entrance point 2 of nozzle arrangements is 1mm, close to the outlet of nozzle arrangements
The arc radius at end 3 is 0.2mm.The total length of cantilever 1 is 15mm；The total length of nozzle arrangements is 40mm.
The common feature of above three embodiment is that both ends are circular arc, is easy to reduction liquid oxygen to be run into flow process
Resistance after ribs 4, while reduce the interference that ribs 4 flow to liquid oxygen, it is ensured that rate of discharge uniformity.
The nozzle arrangements that the present invention has water conservancy diversion and supporting role use 1Cr18Ni9Ti materials, are integrally formed, structure is strong
It is Du Genggao, more robust.
The present invention verify by undergone mass production, nozzle annular gap uniformity after the completion of ejector filler soldering, between minimum annular
Gap is close to design load.And this invention has passed through heat run examination, test burn room temperature is up to about 1000K, and pressure is about
8MPa, vibration level is in 1000m/s2Left and right.Experiment results proved spray nozzle device is safe and reliable, and discharge coefficient is stable, combustion
Burn efficiency high, burning chamber body portion's inwall without hot line, ablation phenomena such as.The design invention has successfully extended to certain liquid oxygen methane rocket
In engine military pre-research project research work, in addition, the art of this patent achievement can be also used for coaxial eccentricity formula nozzle, it can also promote
Applied to the civilian multiple fields such as petrochemical industry, oil refining, have and preferably use for reference popularizing action.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (15)
- A kind of 1. nozzle arrangements with support and guide functions, it is characterised in that：The nozzle arrangements are stepped cylinder body, Stepped throughhole is provided with inside nozzle arrangements；The less part of nozzle arrangements outer radius is as cantilever (1)；The cantilever (1) outer surface is provided with fairshaped ribs (4)；The nozzle arrangements internal step scalariform through hole close to ribs (4) one End is used as the port of export (3)；The other end is as entrance point (2).
- A kind of 2. nozzle arrangements with support and guide functions according to claim 1, it is characterised in that：The streamline The ribs (4) of type are the cylinders that cross section is drops, or, cross section is oval cylinder, or, cross section is that both ends are circle It is trapezoidal cylinder among arc.
- A kind of 3. nozzle arrangements with support and guide functions according to claim 1, it is characterised in that：The cantilever (1) outer surface is circumferential along cantilever (1) in the outer surface of cantilever (1) at least provided with 3 ribs (4), the ribs (4) Cloth.
- A kind of 4. nozzle arrangements with support and guide functions according to claim 1, it is characterised in that：The support The minimum range of rib (4) and the port of export (3) is the 1/3~2/3 of cantilever (1) total length.
- A kind of 5. nozzle arrangements with support and guide functions according to claim 2, it is characterised in that：The water droplet The cross section of shape is made up of 4 tangent circular arcs.
- A kind of 6. nozzle arrangements with support and guide functions according to claim 2, it is characterised in that：The both ends To be trapezoidal cross section among circular arc by 2 circular arcs and two rectilinear(-al)s.
- A kind of 7. nozzle arrangements with support and guide functions according to claim 5, it is characterised in that：Described 4 Tangent circular arc, wherein equal along two arc radius of nozzle arrangements axial direction.
- A kind of 8. nozzle arrangements with support and guide functions according to claim 5, it is characterised in that：Described 4 Tangent circular arc, the circular arc of the port of export (3) close to nozzle arrangements is more than close to the arc radius of the entrance point (2) of nozzle arrangements Radius.
- A kind of 9. nozzle arrangements with support and guide functions according to claim 6, it is characterised in that：Described 2 Circular arc, the arc radius of the port of export (3) close to nozzle arrangements is more than close to the arc radius of the entrance point (2) of nozzle arrangements.
- A kind of 10. nozzle arrangements with support and guide functions according to claim 5, it is characterised in that：Described 4 Tangent circular arc, close to the arc radius of the entrance point (2) of nozzle arrangements, with the circular arc of the port of export (3) of close nozzle arrangements The ratio of radius is 2~10.
- A kind of 11. nozzle arrangements with support and guide functions according to claim 6, it is characterised in that：Described 2 Circular arc, close to the arc radius of the entrance point (2) of nozzle arrangements, with the arc radius of the port of export (3) of close nozzle arrangements Ratio is 2~10.
- A kind of 12. nozzle arrangements with support and guide functions according to claim 5, it is characterised in that：Described 4 Tangent circular arc, along the arc radius of nozzle arrangements axial direction, with the arc radius of the entrance point (2) of close nozzle arrangements Ratio be 4~10.
- A kind of 13. nozzle arrangements with support and guide functions according to one of Claims 1 to 4, it is characterised in that： The height and the internal diameter of external fuel nozzle arrangements of the ribs (4) match.
- A kind of 14. nozzle arrangements with support and guide functions according to one of Claims 1 to 4, it is characterised in that： Nozzle arrangements use 1Cr18Ni9Ti materials, are integrally formed.
- A kind of 15. nozzle arrangements with support and guide functions according to one of Claims 1 to 4, it is characterised in that： The radius of the entrance point (2) is less than the radius of the port of export (3) of nozzle arrangements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155342.0A CN107762664A (en) | 2017-11-20 | 2017-11-20 | A kind of nozzle arrangements with support and guide functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711155342.0A CN107762664A (en) | 2017-11-20 | 2017-11-20 | A kind of nozzle arrangements with support and guide functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107762664A true CN107762664A (en) | 2018-03-06 |
Family
ID=61278420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711155342.0A Pending CN107762664A (en) | 2017-11-20 | 2017-11-20 | A kind of nozzle arrangements with support and guide functions |
Country Status (1)
| Country | Link |
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| CN (1) | CN107762664A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295316A (en) * | 2021-12-31 | 2022-04-08 | 重庆交通大学绿色航空技术研究院 | Suction type transonic velocity plane cascade test bed air inlet device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295316A (en) * | 2021-12-31 | 2022-04-08 | 重庆交通大学绿色航空技术研究院 | Suction type transonic velocity plane cascade test bed air inlet device |
| CN114295316B (en) * | 2021-12-31 | 2023-12-12 | 重庆交通大学绿色航空技术研究院 | Suction type transonic plane blade grid test bed air inlet device |
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