CN106870200B - A kind of axial symmetry plug nozzle that subregion is cooling - Google Patents
A kind of axial symmetry plug nozzle that subregion is cooling Download PDFInfo
- Publication number
- CN106870200B CN106870200B CN201710084184.8A CN201710084184A CN106870200B CN 106870200 B CN106870200 B CN 106870200B CN 201710084184 A CN201710084184 A CN 201710084184A CN 106870200 B CN106870200 B CN 106870200B
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- Prior art keywords
- plug
- cone
- cooling
- cooling duct
- shell
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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
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/06—Varying effective area of jet pipe or nozzle
- F02K1/08—Varying effective area of jet pipe or nozzle by axially moving or transversely deforming an internal member, e.g. the exhaust cone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The present invention provides a kind of axial symmetry plug nozzle that subregion is cooling, including supporting plate (1), cylinder (2), plug cone (3), plug cone (3) is double-layer thin wall structure, and outer layer thin-walled (33), which removes, is provided with plug cone air film hole (4) at umbrella shape half-shell (32) tip；Supporting plate (1) is thin-walled hollow structure, and the partition one (13) that the inner cavity is divided into two chambers is provided in supporting plate (1) inner cavity；The first cooling duct (35) and the second cooling duct (36) of hollow slat standard are provided on the inside of plug cone (3) internal layer thin-walled (34), air-flow in two chambers is introduced between plug (3) two thin-walleds of cone by two cooling ducts, and is discharged from plug cone air film hole (4)；The partition two (38) for obstructing two strands of air flow contacts is provided between two thin-walleds.Plug nozzle provided by the present invention, it is contemplated that the two-part pressure difference variation in plug cone front and back, it is cooling using subregion, plug poppet surface temperature is effectively reduced, guarantees that plug cone is not ablated.
Description
Technical field
The invention belongs to aeroplane engine machine drum body fields, and in particular to a kind of axial symmetry plug nozzle that subregion is cooling.
Background technique
Plug nozzle has the advantages that high blow down ratio and high Stealth Fighter, but plug nozzle is asked there are wall surface temperature is excessively high
Topic, and then the shortcomings that limitation jet pipe and host performance, thus the cooling urgent need to resolve of pair-piston type jet pipe.
Summary of the invention
The purpose of the present invention is to provide a kind of cooling axial symmetry plug nozzles of subregion, overcome or alleviated by the prior art
At least one drawbacks described above.
The purpose of the present invention is achieved through the following technical solutions: a kind of axial symmetry plug nozzle that subregion is cooling, including branch
Plate, cylinder, plug cone, plug cone are the axial symmetry thin-wall case that one end is arranged that umbrella shape half-shell is arranged in the cone half-shell other end, the plug
Cone is installed on cylinder by the supporting plate being arranged in cone half-shell, and the plug cone is double-layer thin wall structure, which bores outer layer
Thin-walled, which removes, is provided with plug cone air film hole at umbrella shape half-shell tip；
The supporting plate is thin-walled hollow structure, which is connected with cylinder tube wall, which is connected to plug
It bores on outer layer thin-walled, the supporting plate inner cavity is provided with the partition one for separating air-flow, which is divided into for supporting plate inner cavity
One chamber and second chamber；
The plug cone internal layer thin plate is provided with the first cooling duct and the second cooling duct far from outer layer thin-walled side, and two is cold
But channel is hollow slat, and offers cooling duct air film hole on the umbrella shape half-shell region of the internal layer thin plate；First
The indoor air-flow of chamber is introduced between plug two thin-walleds of cone by the first cooling duct approach cooling duct air film hole, and bores air film from plug
Hole discharge；Air-flow in second chamber guides cone of leaving the boundary by the second cooling duct；It is set between outer layer thin-walled and internal layer thin plate
It is equipped with the partition two for obstructing the air flow contacts in air-flow and second chamber in first chamber.
Preferably, the plug cone air film hole on plug cone outer layer thin-walled cone half-shell one end is circumferential along the plug axis of cone line
It is uniformly distributed, and along the equidistant divergence expression setting of the plug axis of cone line.
Preferably, the plug cone air film hole on plug cone outer layer thin-walled umbrella shape half-shell one end is along the plug axis of cone line circumferential direction cloth
It sets, and according to the dense setting of arrangement at the sparse separate umbrella shape half-shell tip of arrangement at the umbrella shape half-shell tip.
Preferably, the cooling duct air film hole is located at the tip of the plug cone internal layer thin plate umbrella shape half-shell.
Preferably, first cooling duct is the C font hollow slat that width gradually broadens, first cooling duct
For guiding the air-flow in the first chamber, which is connected to the internal layer thin plate at slot end
At cooling duct air film hole in umbrella shape half-shell.
Preferably, second cooling duct is the C font hollow slat that width gradually broadens, second cooling duct
For guiding the air-flow in the second chamber, which is arranged in the internal layer thin plate wide mouth end
Cone half-shell side.
Preferably, the partition two is located at second cooling duct wide mouth end and the second cooling duct slot end
Between, and be arranged close to the second cooling duct slot end.
Preferably, the partition one and two thickness of partition are 1mm.
Preferably, the supporting plate is 6, and is circumferentially distributed between the cylinder and plug cone.
A kind of beneficial effect of the cooling axial symmetry plug nozzle of subregion provided by the present invention is, it is contemplated that before plug cone
Two-part pressure difference variation afterwards, it is cooling using subregion, so that cooling air is preferably utilized, more preferably to the cooling effect of plug cone.
For the cooling duct air film hole being arranged on plug cone windward side tip using impinging cooling, ensure that cooling effect again prevents hot gas purling
It is internal to its ablation to enter plug cone.
Detailed description of the invention
Fig. 1 is the isometric drawing of the cooling axial symmetry plug nozzle of subregion of the present invention；
Fig. 2 is the structural schematic diagram of the cooling axial symmetry plug nozzle of subregion of the present invention；
The semi-cutaway of the cooling axial symmetry plug nozzle of the subregion of the present invention that Fig. 3 is Fig. 2；
Fig. 4 is the A of the cooling axial symmetry plug nozzle of the subregion of the present invention of Fig. 2 to schematic diagram；
Partial enlarged view at the B of the cooling axial symmetry plug nozzle of the subregion of the present invention that Fig. 5 is Fig. 3；
Partial enlarged view at the C of the cooling axial symmetry plug nozzle of the subregion of the present invention that Fig. 6 is Fig. 3.
Appended drawing reference:
1- supporting plate, 2- cylinder, 3- plug cone, 4- plug cone air film hole, 11- first chamber, 12- second chamber, 13- partition one,
31- cone half-shell, 32- umbrella shape half-shell, 33- outer layer thin-walled, 34- internal layer thin plate, the first cooling duct 35-, 36- second are cooling
Channel, the cooling duct 37- air film hole, 38- partition two.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The axial symmetry plug nozzle cooling to subregion of the invention is described in further details with reference to the accompanying drawing.
As shown in Figure 1, the axial symmetry plug nozzle that a kind of subregion is cooling, including 3 three supporting plate 1, cylinder 2, plug cone parts,
The axial symmetry thin-wall case that umbrella shape half-shell 32 is arranged in 31 other end of cone half-shell is arranged for one end in plug cone 3, and plug cone 3 is bilayer
Thin-wall construction, is divided into outer layer thin-walled 33 and internal layer thin plate 34, and plug cone 3 is installed by the supporting plate 1 being arranged in cone half-shell 31
Onto cylinder 2.
As shown in figures 1 and 3, supporting plate 1 is thin-walled hollow structure, which is connected with 2 tube wall of cylinder, the other end
It is connected on plug 3 outer layer thin-walleds 33 of cone, at the selection of supporting plate 1 setting 6 in the present embodiment, and is circumferentially distributed in cylinder 2 and plug cone 3
Between.Each 1 inner cavity of supporting plate is provided with the partition 1 with a thickness of 1mm for separating air-flow, due to the partition 1
1 inner cavity of supporting plate is divided into first chamber 11 and second chamber 12 in turn by setting.
It is removed in plug 3 outer layer thin-walleds 33 of cone and is provided with plug cone air film hole 4 (see Fig. 4) at 32 tip of umbrella shape half-shell, is i.e. plug cone
4 a part of air film hole is distributed in 31 region of cone half-shell, and another part is distributed in 32 region of umbrella shape half-shell.It is distributed in cone
Plug cone air film hole 4 selection on 31 one end of half-shell is bored 3 axis along the plug and is circumferentially evenly distributed with, and bores 3 axis along the plug and equidistantly send out
Formula setting is dissipated, sees Fig. 2, the plug cone selection of air film hole 4 being distributed on 32 one end of umbrella shape half-shell bores 3 axis circumferentially along the plug,
And dense setting, such as Fig. 4 are arranged at sparse separate 32 tip of umbrella shape half-shell of arrangement according at 32 tip of umbrella shape half-shell
It is shown.
Lead to as shown in figure 3, being provided with the first cooling (i.e. far from 33 side of outer layer thin-walled) in 3 internal layer thin plate of plug cone, 34 inside
Road 35 and the second cooling duct 36, two cooling ducts are hollow slat, and in 32nd area of umbrella shape half-shell of the internal layer thin plate 34
Cooling duct air film hole 37 is offered on domain, which is alternatively provided at plug cone 3 internal layer thin plate, 34 umbrella shape half
At the tip of shell 32, Fig. 3 and Fig. 5 are seen.The C font that the first cooling duct 35 selection width of the present embodiment gradually broadens is hollow thin
Plate form, the 35 slot end of the first cooling duct are arranged at the opposite position of first chamber 11, come from the first chamber for guiding
Air-flow in room 11,35 wide mouth end of the first cooling duct are connected to the cooling duct air film in 34 umbrella shape half-shell 32 of internal layer thin plate
At hole 37, the air-flow in first chamber 11 is 3 liang thin by 35 approach cooling duct air film hole 37 of the first cooling duct introducing plug cone
Between wall, and it is discharged from plug cone air film hole 4.The C font that second cooling duct of the present embodiment also selects width gradually to broaden is empty
Heart thin plate, 36 wide mouth end of the second cooling duct are arranged at the opposite position of second chamber 12, come from the second chamber for guiding
Air-flow in room 12, the 36 slot end of the second cooling duct are arranged in 34 cone half-shell of internal layer thin plate, 31 side, second chamber
Air-flow in 12 is introduced between plug 3 liang of thin-walleds of cone by the second cooling duct 36, and is discharged from plug cone air film hole 4.In order to avoid
Two strands of air-flows between two thin-walleds, which are in contact, there is air turbulence phenomenon, and setting comes from first chamber for obstructing between two thin-walleds
The partition 2 38 that air-flow in 11 is in contact with the air-flow in second chamber 12, with a thickness of 1mm, selection is set the partition 2 38
It sets between 36 slot end of 36 wide mouth end of the second cooling duct and the second cooling duct, and close to 36 slot end of the second cooling duct
Side, as shown in Figure 6.
The operating process of brief description plug nozzle of the present invention.As shown in figure 3,2 left hand inlet port end of cylinder and engine connect
It connects, cylinder 2 is the supporting member of entire jet pipe, and primary air enters cylinder 2 from 2 arrival end of cylinder, by cylinder 2 and plug 3 structures of cone
At channel in flow, flowed out through the spout between the right side of cylinder 2 and plug cone 3.Cooling air is divided into two strands, one cooling air is from branch
1 first chamber of plate, 11 entrance (being entrance side close to 2 side of cylinder) enters first chamber 11, flows through through the first cooling duct 35 cold
But channel air film hole 37, then flowed out through plug cone air film hole 4, gaseous film control is carried out to plug cone 3；Another burst of cooling air is from supporting plate 1
Two chambers, 12 entrance (being entrance side close to 2 side of cylinder) enters second chamber 12, then through the second cooling duct 36, bores gas from plug
Fenestra 4 flows out, and carries out gaseous film control to plug cone 3.Using the cooling measure of subregion, it is contemplated that the two-part pressure difference in plug cone front and back becomes
Change, utilizes cooling air preferably, cooling effect is more preferably.Again due at the tip of plug cone 3 internal layer thin plate, 34 umbrella shape half-shell 32
It is provided with cooling duct air film hole 37, consequently facilitating impinging cooling, guarantees to prevent thermal current from pouring into plug again while cooling effect
To its ablation inside cone 3.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (9)
1. a kind of cooling axial symmetry plug nozzle of subregion, including supporting plate (1), cylinder (2), plug cone (3), plug cone (3) are one end
The axial symmetry thin-wall case of cone half-shell (31) other end setting umbrella shape half-shell (32) is set, which bores (3) and existed by setting
Supporting plate (1) in cone half-shell (31) is installed on cylinder (2), which is characterized in that the plug cone (3) is double-layer thin wall knot
Structure, plug cone (3) outer layer thin-walled (33), which removes, is provided with plug cone air film hole (4) at umbrella shape half-shell (32) tip；
The supporting plate (1) is thin-walled hollow structure, which is connected with cylinder (2) tube wall, supporting plate (1) other end
It is connected on plug cone (3) outer layer thin-walled (33), supporting plate (1) inner cavity is provided with the partition one (13) for separating air-flow, it should
Supporting plate (1) inner cavity is divided into first chamber (11) and second chamber (12) by partition one (13)；
Plug cone (3) internal layer thin plate (34) is provided with the first cooling duct (35) and second cold far from outer layer thin-walled (33) side
But channel (36), two cooling ducts are hollow slat, and are opened on umbrella shape half-shell (32) region of the internal layer thin plate (34)
Equipped with cooling duct air film hole (37)；Air-flow in first chamber (11) is by the first cooling duct (35) by way of cooling duct gas
Fenestra (37) introduces between plug (3) two thin-walleds of cone, and is discharged from plug cone air film hole (4)；Air-flow in second chamber (12) passes through
Cone (3) are left the boundary in second cooling duct (36) guidance；It is provided between outer layer thin-walled (33) and internal layer thin plate (34) for obstructing
The partition two (38) of the air flow contacts in air-flow and second chamber (12) in first chamber (11).
2. the cooling axial symmetry plug nozzle of subregion according to claim 1, which is characterized in that the plug bores (3) outer layer
Plug cone air film hole (4) on thin-walled (33) cone half-shell (31) one end is circumferentially uniformly distributed along plug cone (3) axis, and along the plug
Bore the equidistant divergence expression setting of (3) axis.
3. the cooling axial symmetry plug nozzle of subregion according to claim 1, which is characterized in that the plug bores (3) outer layer
Circumferentially along plug cone (3) axis, the plug bores air film to plug cone air film hole (4) on thin-walled (33) umbrella shape half-shell (32) one end
Hole (4) is according to arrangement is dense at sparse and separate umbrella shape half-shell (32) tip of arrangement at umbrella shape half-shell (32) tip
Setting.
4. the cooling axial symmetry plug nozzle of subregion according to claim 1, which is characterized in that the cooling duct air film
Hole (37) is located at the tip of the plug cone (3) internal layer thin plate (34) umbrella shape half-shell (32).
5. the cooling axial symmetry plug nozzle of subregion according to claim 1, which is characterized in that first cooling duct
(35) the C font hollow slat gradually to broaden for width, the first cooling duct (35) the slot end is for guiding from described the
Air-flow in one chamber (11), the first cooling duct (35) wide mouth end are connected to internal layer thin plate (34) the umbrella shape half-shell (32)
On cooling duct air film hole (37) at.
6. the cooling axial symmetry plug nozzle of subregion according to claim 1, which is characterized in that second cooling duct
(36) the C font hollow slat gradually to broaden for width, the second cooling duct (36) wide mouth end is for guiding from described the
Air-flow in two chambers (12), the second cooling duct (36) the slot end are arranged in internal layer thin plate (34) the cone half-shell
(31) side.
7. the cooling axial symmetry plug nozzle of subregion according to claim 6, which is characterized in that partition two (38) position
Between the second cooling duct (36) wide mouth end and second cooling duct (36) slot end, and it is second cold close to this
But channel (36) slot end is arranged.
8. the cooling axial symmetry plug nozzle of subregion according to claim 1, which is characterized in that the partition one (13) with
Partition two (38) thickness is 1mm.
9. the cooling axial symmetry plug nozzle of subregion according to claim 1, which is characterized in that the supporting plate (1) is 6
It is a, and be circumferentially distributed between the cylinder (2) and plug cone (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084184.8A CN106870200B (en) | 2017-02-16 | 2017-02-16 | A kind of axial symmetry plug nozzle that subregion is cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710084184.8A CN106870200B (en) | 2017-02-16 | 2017-02-16 | A kind of axial symmetry plug nozzle that subregion is cooling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106870200A CN106870200A (en) | 2017-06-20 |
| CN106870200B true CN106870200B (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710084184.8A Active CN106870200B (en) | 2017-02-16 | 2017-02-16 | A kind of axial symmetry plug nozzle that subregion is cooling |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829840A (en) * | 2017-11-10 | 2018-03-23 | 中国航发沈阳发动机研究所 | Axial symmetry plug nozzle support plate cooling structure and there is its aero-engine |
| CN108104976B (en) * | 2017-11-28 | 2020-06-30 | 中国航发沈阳发动机研究所 | Aerosol inhibition plug type spray pipe infrared radiation method and plug type spray pipe |
| CN109339975B (en) * | 2018-11-02 | 2020-09-22 | 中国航空工业集团公司西安飞机设计研究所 | Stealth exhaust pipe with adjustable conical cavity |
| CN109356746A (en) * | 2018-12-14 | 2019-02-19 | 中国航发沈阳发动机研究所 | Aero-engine integrates exhaust structure |
| CN111594339A (en) * | 2020-05-26 | 2020-08-28 | 中国人民解放军国防科技大学 | Ramjet engine using plug nozzle |
| CN113357044A (en) * | 2021-05-23 | 2021-09-07 | 中国航发沈阳发动机研究所 | Inner cone with flow guide support plate |
| CN113339156A (en) * | 2021-06-28 | 2021-09-03 | 西北工业大学 | Dual-bearing binary plug type thrust vectoring nozzle |
| CN114151228B (en) * | 2022-02-09 | 2022-04-22 | 中国航发四川燃气涡轮研究院 | Method for dividing binary vector spray pipe regulating sheet into discrete cold air areas |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3981143A (en) * | 1974-08-15 | 1976-09-21 | The United States Of America As Represented By The Secretary Of The Army | Infrared suppressor |
| US4798048A (en) * | 1987-12-21 | 1989-01-17 | United Technologies Corporation | Augmentor pilot |
| CN102032072A (en) * | 2010-11-24 | 2011-04-27 | 南京航空航天大学 | Exhaust system for gaseous film cooling central cone of turbofan aircraft engine |
| US20120321451A1 (en) * | 2011-06-20 | 2012-12-20 | Hamilton Sundstrand Corporation | Bearing Housing Cooling System |
| CN102953865B (en) * | 2012-11-08 | 2015-01-21 | 中国航空工业集团公司沈阳发动机设计研究所 | Plug cooling structure of plug type axisymmetric nozzle |
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