CN110529287A - A kind of combination in series punching engine fan splitter - Google Patents
A kind of combination in series punching engine fan splitter Download PDFInfo
- Publication number
- CN110529287A CN110529287A CN201910746469.2A CN201910746469A CN110529287A CN 110529287 A CN110529287 A CN 110529287A CN 201910746469 A CN201910746469 A CN 201910746469A CN 110529287 A CN110529287 A CN 110529287A
- Authority
- CN
- China
- Prior art keywords
- duct
- combination
- flow splitter
- pass air
- splitter
- 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
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
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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
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
- F02K3/077—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type the plant being of the multiple flow type, i.e. having three or more flows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
- F02K7/10—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines
- F02K7/16—Composite ram-jet/turbo-jet engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of combination in series punching engine fan splitters, including punching press duct, by-pass air duct, main duct, flow splitter, several supporting plates, main duct, flow splitter, by-pass air duct, punching press duct are successively coaxially disposed from inside to outside, main duct, flow splitter, by-pass air duct, punching press duct have the connection of several supporting plates, form integral structure, the present invention is to adapt to combination in series punching engine and design, punching press duct and by-pass air duct are separated by by-pass air duct wall surface, and provided with internal duct and external duct is separated by flow splitter；Using integrated design, flow splitter reduces the quantity of engine part, reduces assembly difficulty, without welding, eliminate welding stress, reduce the risk that casing cracks by welding stress deformation without being welded on bearing case after being assembled into component；Flow splitter front end wedge structure, reduces boundary-layer, improves fan and compressor efficiency；The cavity structure of by-pass air duct outside wall surface wall surface alleviates weight, increases intensity, effectively reduces hot transmitting.
Description
Technical field
The invention belongs to aerospace engine driving system technical fields more particularly to a kind of combination in series punching press to send out
Motivation fan splitter.
Background technique
Combination in series punching engine is a new technology at home.There are two mode for work: under turbine mode, low horse
In conspicuous several working ranges, air intake port shunts stifled cone and closes the import of punching press duct, the outlet of duct selector valve closing punching press duct,
Air-flow only passes through engine provided with internal duct and external duct；Under punching press mode, air intake port shunts stifled cone and closes turbine bypass import, duct choosing
It selects valve and closes turbine bypass outlet, turbine base is in dead ship condition, and air-flow all enters multimode ram combustion via punching press duct
Burn room.
Currently, the flow splitter of prior art fan splitter, which passes through, is first assembled into flow splitter, then entirely through electron beam
The method of weldering is welded on bearing case, and flow splitter front end is all made of arc angle transition.The part that this kind of method needs is more,
Assembly is complicated, when welding after assembly, can generate welding stress, and fan splitter is large scale, thin-walled, labyrinth casing, weldering
It scoops out power and easily leads to casing deformation, cracking；Arc-shaped transition can form thick boundary-layer shunting ring surface and form vortex, drop
Low compressor efficiency.
Summary of the invention
Goal of the invention: proposing a kind of combination in series punching engine fan splitter, for solving combination in series punching
Hydraulic motor is ventilated with fan splitter punching press duct, existing shunting shaped part is more, assembly is complicated and welding stress is big, strain cracking
And flow splitter top and bottom air-flow vortex problem.
Technical solution of the present invention:
A kind of combination in series punching engine fan splitter, including punching press duct, by-pass air duct, main duct, flow splitter,
Several supporting plates, the main duct, flow splitter, by-pass air duct, punching press duct are successively coaxially disposed from inside to outside, the intension
Road, flow splitter, by-pass air duct, punching press duct are connected by several supporting plates, form integral structure.
It further include several flow splitter wedge structures, the flow splitter wedge structure is evenly arranged on flow splitter.
The by-pass air duct is internally provided with several cavity structures along its outer wall EDS maps, every two adjacent cavity
Structure is isolated by supporting plate.
The supporting plate quantity is 6.
The supporting plate is hollow structure.
Several attachment installation interfaces are evenly distributed in the punching press duct outside wall surface.
Several reinforcing ribs are provided in the punching press duct outside wall surface.
The positive incidence of the flow splitter wedge structure is+18 °, and negative angle of attack is -18 °.
The cavity structure is+17 ° along the positive incidence of course front end, and negative angle of attack is -17 °.
Advantageous effects: providing a kind of combination in series punching engine fan splitter, and the present invention is to adapt to series connection
Formula combines punching engine and designs, and has three punching press duct, by-pass air duct, main duct ducts, punching press duct and by-pass air duct are by outer
Duct wall surface separates, and provided with internal duct and external duct is separated by flow splitter；Using integrated design, flow splitter after being assembled into component without being welded on
On bearing case, reduce the quantity of engine part, reduce assembly difficulty, without welding, eliminate welding stress, reduces
The risk that casing cracks by welding stress deformation；It has devised flow splitter front end flow splitter wedge structure novel, has reduced attached
Surface layer improves fan and compressor efficiency；By-pass air duct wall surface is designed as cavity structure, is processed using 3D printing, alleviates weight
It measures, increases intensity, effectively reduces hot transmitting.
Detailed description of the invention
Fig. 1 is schematic structural diagram of the device of the invention；
Fig. 2 is flow splitter wedge structure schematic diagram
It is identified in figure: 1, punching press duct, 2, by-pass air duct, 3, main duct, 4, flow splitter, 5, supporting plate, 6, cavity structure, 7, attached
Part installs interface, 8, reinforcing rib, 9, flow splitter wedge structure.
Specific embodiment
The present invention is further introduced with reference to the accompanying drawing, as shown in Figure 1, a kind of tandem group of the present invention
Syzygies hydraulic motor fan splitter, including punching press duct 1, by-pass air duct 2, main duct 3, flow splitter 4, several supporting plates 5, it is described
Main duct 3, flow splitter 4, by-pass air duct 2, punching press duct 1 be successively coaxially disposed from inside to outside, punching press duct 1 and by-pass air duct 2 by
2 wall surface of by-pass air duct separates, and provided with internal duct and external duct is separated by flow splitter 4, the main duct 3, flow splitter 4, by-pass air duct 2, punching press duct 1
It is connected by several supporting plates 5, forms integral structure, using integral forming design, manufacture, instead of traditional welded connecting
Mode, flow splitter 4 reduce the quantity of engine part, reduce dress without being welded on bearing case after being assembled into component
Welding stress is eliminated without welding with difficulty, casing is made to be unlikely to crack because of welding stress deformation.
1 outside wall surface of punching press duct, 2 wall surface of by-pass air duct, 3 wall surface of main duct front and rear end on design stationary phase answer zero
The installation side of part, design has the installation side of fastenings on the rear end face of flow splitter 4.
It further include several flow splitter wedge structures 9, the flow splitter wedge structure 9 is evenly arranged on flow splitter 4,
The positive incidence of the flow splitter wedge structure 9 is+18 °, and negative angle of attack is -18 °, is not traditional round-corner transition, reduces attached
Surface layer improves fan and compressor efficiency.
The by-pass air duct 2 is internally provided with several cavity structures 6 along its outer wall EDS maps, using 3D printing method
Processing, every two adjacent cavity structure 6 are isolated by supporting plate 5, on the one hand which can mitigate casing weight, another
Aspect can promote casing intensity and under punching press mode, and cavity structure 6 can effectively reduce the heat of punching press duct 1 to by-pass air duct 2
Transmitting.
The supporting plate 5 is hollow structure, is passed through convenient for the cotton rope of exterior part, and 5 quantity of supporting plate is 6.
1 outside wall surface of punching press duct and 5 joint of supporting plate is evenly distributed with several attachment installation interfaces 7, for pacifying
Fill attachment.
Several reinforcing ribs 8, preferably four are provided in 1 outside wall surface of punching press duct.
The cavity structure 6 is+17 ° along the positive incidence of course front end, and negative angle of attack is -17 °.
The working principle of the invention: engine operation in turbine mode, i.e., in low mach working range, say by air inlet
Mouthful shunt that stifled cone closes 1 import of punching press duct, duct selector valve is closed punching press duct 1 and exported, air-flow after low pressure fan pressurization,
By the fan splitter front position between 2 wall surface of by-pass air duct, 3 wall surface of main duct, then, air-flow is made in the flow-disturbing of flow splitter 4
Under, respectively enter interior between the by-pass air duct 2 between 2 wall surface of by-pass air duct and flow splitter 4 and 3 wall surface of main duct and flow splitter 4
Duct 3, flow splitter wedge structure 9 carry out flow-disturbing to the air-flow to come from fan splitter front end, are vortexed with reducing, and promote compressor
Efficiency.
In punching press mode, air intake port shunts stifled cone and closes turbine bypass import, duct selector valve engine operation
Turbine bypass outlet is closed, turbine base is in dead ship condition, and air-flow all enters multimode ram via punching press duct 1 and burns
Room.The ventilatory function that punching press duct 1, by-pass air duct 2, main duct 3 are realized by a part, simplifies structure.
To sum up, the present invention is well positioned to meet the work of combination in series punching engine turbine basic mode state and punching press mode
It is required that one part realizes the ventilatory function of punching press duct 1, by-pass air duct 2, main duct 3 using integrated design, simplify
Structure reduces assembly difficulty, without welding, eliminates welding stress, reduces casing strain cracking risk；It devises novel
Flow splitter front end turbulence structure, improves compressor efficiency；By-pass air duct wall surface is designed as cavity structure and alleviates weight, increases
Intensity reduces heat transfer.
It should be noted that the above content is in conjunction with specific preferred embodiment to further explaining where the present invention
It states, and it cannot be said that a specific embodiment of the invention is only limitted to this, for general technical staff of the technical field of the invention
For, without departing from the inventive concept of the premise, several simple deduction or replace can also be made, should be regarded as belonging to this hair
Specify fixed protection scope.
Claims (9)
1. a kind of combination in series punching engine fan splitter, it is characterised in that: including punching press duct (1), by-pass air duct
(2), main duct (3), flow splitter (4), several supporting plates (5), the main duct (3), flow splitter (4), by-pass air duct (2), punching
Pressure duct (1) is successively coaxially disposed from inside to outside, the main duct (3), flow splitter (4), by-pass air duct (2), punching press duct (1)
It is connected by several supporting plates (5), forms integral structure.
2. a kind of combination in series punching engine fan splitter according to claim 1, it is characterised in that: further include
Several flow splitter wedge structures (9), the flow splitter wedge structure (9) are evenly arranged on flow splitter (4).
3. a kind of combination in series punching engine fan splitter according to claim 1, it is characterised in that: described
By-pass air duct (2) is internally provided with several cavity structures (6) along its outer wall EDS maps, every two adjacent cavity structure (6)
It is isolated by supporting plate (5).
4. a kind of combination in series punching engine fan splitter according to claim 1, it is characterised in that: described
Supporting plate (5) quantity is 6.
5. a kind of combination in series punching engine fan splitter according to claim 1, it is characterised in that: described
Supporting plate (1) is hollow structure.
6. a kind of combination in series punching engine fan splitter according to claim 1, it is characterised in that: described
Several attachment installations interface (7) are evenly distributed in punching press duct (1) outside wall surface.
7. a kind of combination in series punching engine fan splitter according to claim 1, it is characterised in that: described
Several reinforcing ribs (8) are provided in punching press duct (1) outside wall surface.
8. a kind of combination in series punching engine fan splitter according to claim 2, it is characterised in that: described
The positive incidence of flow splitter wedge structure (9) is+18 °, and negative angle of attack is -18 °.
9. a kind of combination in series punching engine fan splitter according to claim 3, it is characterised in that: described
Cavity structure (6) is+17 ° along the positive incidence of course front end, and negative angle of attack is -17 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746469.2A CN110529287B (en) | 2019-08-13 | 2019-08-13 | Shunt casing for tandem type combined stamping engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746469.2A CN110529287B (en) | 2019-08-13 | 2019-08-13 | Shunt casing for tandem type combined stamping engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110529287A true CN110529287A (en) | 2019-12-03 |
| CN110529287B CN110529287B (en) | 2022-08-26 |
Family
ID=68663181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910746469.2A Active CN110529287B (en) | 2019-08-13 | 2019-08-13 | Shunt casing for tandem type combined stamping engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110529287B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929026A (en) * | 2020-09-29 | 2020-11-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-frequency pressure pulsation suppression method for wind tunnel 3/4 opening test section |
| CN112989500A (en) * | 2021-04-23 | 2021-06-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Inlet flow-dividing stability-expanding design method suitable for contra-rotating lift fan |
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| US2610465A (en) * | 1945-09-27 | 1952-09-16 | Rateau Soc | Auxiliary thrust means for jetpropelled aircraft |
| GB924331A (en) * | 1960-07-11 | 1963-04-24 | Nord Aviation | Improved combined turbo-jet-ram-jet-engine |
| US3167911A (en) * | 1961-01-27 | 1965-02-02 | Nord Aviation | Thrust-reversing device for combined turbojet-ramjet units |
| CN101117926A (en) * | 2006-07-31 | 2008-02-06 | 通用电气公司 | Flade fan with different inner and outer airfoil stagger angles at a shroud therebetween |
| CN104696074A (en) * | 2013-12-10 | 2015-06-10 | 贵州黎阳航空动力有限公司 | Structure for reducing internal temperature of wall surface and machine pry of gas turbine |
| CN105003303A (en) * | 2015-06-23 | 2015-10-28 | 中国航空动力机械研究所 | Supporting system for turbine part of gas turbine engine |
| CN105156228A (en) * | 2015-09-29 | 2015-12-16 | 清华大学 | Ejector-assistant turbine-based combined cycle engine |
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2019
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2610465A (en) * | 1945-09-27 | 1952-09-16 | Rateau Soc | Auxiliary thrust means for jetpropelled aircraft |
| GB924331A (en) * | 1960-07-11 | 1963-04-24 | Nord Aviation | Improved combined turbo-jet-ram-jet-engine |
| US3167911A (en) * | 1961-01-27 | 1965-02-02 | Nord Aviation | Thrust-reversing device for combined turbojet-ramjet units |
| CN101117926A (en) * | 2006-07-31 | 2008-02-06 | 通用电气公司 | Flade fan with different inner and outer airfoil stagger angles at a shroud therebetween |
| CN104696074A (en) * | 2013-12-10 | 2015-06-10 | 贵州黎阳航空动力有限公司 | Structure for reducing internal temperature of wall surface and machine pry of gas turbine |
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| CN105156228A (en) * | 2015-09-29 | 2015-12-16 | 清华大学 | Ejector-assistant turbine-based combined cycle engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929026A (en) * | 2020-09-29 | 2020-11-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-frequency pressure pulsation suppression method for wind tunnel 3/4 opening test section |
| CN111929026B (en) * | 2020-09-29 | 2020-12-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-frequency pressure pulsation suppression method for wind tunnel 3/4 opening test section |
| CN112989500A (en) * | 2021-04-23 | 2021-06-18 | 中国空气动力研究与发展中心高速空气动力研究所 | Inlet flow-dividing stability-expanding design method suitable for contra-rotating lift fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110529287B (en) | 2022-08-26 |
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