CN105952550B - A kind of slide bar type punching engine becomes mode adjustable throat jet pipe - Google Patents
A kind of slide bar type punching engine becomes mode adjustable throat jet pipe Download PDFInfo
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- CN105952550B CN105952550B CN201610384662.2A CN201610384662A CN105952550B CN 105952550 B CN105952550 B CN 105952550B CN 201610384662 A CN201610384662 A CN 201610384662A CN 105952550 B CN105952550 B CN 105952550B
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- Prior art keywords
- sliding
- jet pipe
- adjustment sheet
- convergence adjustment
- divergent flap
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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
- F02K1/11—Varying effective area of jet pipe or nozzle by means of pivoted eyelids
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses a kind of slide bar type punching engines to become mode adjustable throat jet pipe, it includes driving lever, prismatic pair adjusting rod, sliding bar, sliding block, multiple convergence adjustment sheets and Divergent flap, the multiple convergence adjustment sheets circumferentially disposed along nozzle throat；The multiple Divergent flaps circumferentially disposed along nozzle throat, the front end of Divergent flap are connected by a linkage with corresponding convergence adjustment sheet；Convergence adjustment sheet connects sliding bar by linkage；It when adjusting rod upstream does axial transport to, is rotated by sliding bar around sliding pin, drives the rotation of convergence adjustment sheet around hinge mechanism；Divergent flap includes active segment and fixed section, and the active segment rear end of Divergent flap is connected with corresponding fixed section in a manner of opposite slip.The convergence and extension of venturi can be controlled by the axial movement of adjusting rod, realize the multi-modal transformation of punching press jet pipe.
Description
Technical field
The present invention relates to a kind of throat nozzles, and in particular to a kind of slide bar type punching engine becomes the spray of mode adjustable throat
Pipe.
Background technology
Punching engine is mainly supplied to guided missile and target drone, and as power, comparatively working condition is single, generally use
Be uncontrollable jet pipe, i.e. the fixed jet pipe of venturi and outlet is simple in structure.
It as technology develops, need to give full play to that punching engine specific impulse is big, and during the performance of high speed, need further to expand
When the flight envelope of punching engine and installation application target, change mode is adjustable, and receipts expansion jet pipe into indispensable technology and must just be adopted
Component in this background, can associate and use for reference the change throat nozzle technology of turbojet, and be transplanted to punching press
On engine.However, the nozzle expansion ratio of punching engine is up to 40 ~ 50 when reaching more than 3Ma, and turbojet
Nozzle expansion ratio be only 20 or so, differed one times.If indiscriminately imitating the jet pipe of turbojet, can cause significantly sacrificial
The consequences such as thrust performance, increase structural complexity, quality and cost during domestic animal high speed, so just need to improve.
It is received under the working condition and major parameter expanded in addition, becoming mode, the outlet gas temperature of engine chamber is up to
2000K or so, significantly larger than currently used high temperature metallic material acceptability limit temperature, it is necessary to take flap
Effective cooling provision, to ensure the normal work of flap；On the other hand, in order to reduce the red of Exhuster of engine
External radiation improves the survival ability of aircraft, it is also necessary to reduce flap wall temperature, reduce the infrared signal of jet pipe wall surface.
The cooling provision of general axial symmetry flap and diaphragm seal is divided into interior cold and outer cold two ways.Interior cold mode
Mainly there are converging portion heat convection and converging portion thermal insulation board to add expansion segment gaseous film control several, external cooling method is mainly from air intake duct
Or the additional-air inlet goalkeeper ambient atmosphere of fuselage introduces jet pipe ring cavity and carries out convection current cooling.
In general, the high-temperature region of flap wall surface appears in expansion segment, for the ejector exhaust pipe of high expansion ratio, is
Reach preferable thrust performance, expansion segment is all long.Traditional interior cold plus outer cold scheme has been unable to meet requirement, because
From the cooling air film that thermal insulation board comes out as the end stream of cooling air-flow and mainstream combustion gas blends and gradually decays, cause to expand in this way
The back segment of section cannot be cooled down preferably.
Accordingly, it is desirable to provide a kind of new technical solution solves the above problems.
Invention content
The technical problem to be solved in the invention is to provide a kind of slide bar type punching engine and becomes mode adjustable throat jet pipe.
Punching engine thrust performance can effectively be increased in the case where increasing relatively low quality and cost reasons, can further expand punching press
The flight envelope of engine and installation application target.
The technical issues of to solve the present invention, the technical solution adopted by the present invention is：
A kind of slide bar type punching engine becomes mode adjustable throat jet pipe, it includes driving lever, prismatic pair adjusting rod, slides
Bar, sliding block, multiple convergence adjustment sheets and Divergent flap, the driving lever connect prismatic pair adjusting rod, and the prismatic pair is adjusted
Bar connects sliding bar by double hinge mechanism, and the multiple convergence adjustment sheets circumferentially disposed along nozzle throat each restrain adjustment sheet
Both ends and intermediate respectively there are one double hinge mechanism, the multiple Divergent flaps circumferentially disposed along nozzle throat, each expansion is adjusted
The front end of nodal plate is connected by linkage with corresponding convergence adjustment sheet；The convergence adjustment sheet is connected by linkage to be slided
Lever, the sliding bar are connect by linkage with sliding block, and the sliding block can be free to slide in sliding slot, and the sliding slot is consolidated
It is scheduled on jet pipe outer cover.
Further, the Divergent flap includes active segment and fixed section, and the forepart of the active segment passes through Link chain device
Structure is connected with convergence adjustment sheet, and the rear end of the active segment is connected by sliding pin with corresponding fixed section.
Polylith reinforced sheet is provided in the front inner wall of the fixed section, elongated slot, the activity are provided on each reinforced sheet
The sliding pin at section rear portion is inserted in elongated slot.
The fixed section of the Divergent flap is the box-like structure that a section is right angled triangle, before the fixed section
Portion is a toroidal cavity, is circumferentially connected using more support plates with pipe inside and outside wall.
Further, elongated slot is provided on the sliding bar, freely slidable sliding pin, the sliding pin are set in the elongated slot
It is fixed on jet pipe outer cover.
The cooling duct of one rectangular section is set outside the Divergent flap on back.
Further, diaphragm seal is set between the adjacent Divergent flap of each two, between diaphragm seal and adjacent adjustment sheet
Setting synkinesia chain coordinates the movement between them, and the synkinesia chain includes connecting rod, straight pin and hinge, each to adjust
It placed a straight pin on piece and diaphragm seal, connecting rod be set on the straight pin, by hinge connection between two connecting rods.
Beneficial effects of the present invention：A kind of slide bar type punching engine of the present invention becomes mode adjustable throat jet pipe, will expand
Adjustment sheet is divided into two sections, i.e. active segment and fixed section, can reduce the steering force of adjustable throat in this way, and with quality compared with
Gently, the features such as size is small；In addition, by using fixed section and active segment existing gap between the two, can strengthen to fixation
The cooling of section；Furthermore since the rear portion of Divergent flap is fixed section, total becomes more firm, and weight also obtains
Mitigate.Punching engine thrust performance can effectively be increased in the case where increasing relatively low quality and cost reasons, can further be expanded
The flight envelope of big punching engine and installation application target.
Description of the drawings
Fig. 1 is the organigram of the present invention.
Fig. 2 is the structure diagram of synkinesia chain of the present invention.
Fig. 3 a are the structure diagram of present invention expansion fixed section.
Fig. 3 b be in Fig. 3 a B to partial view.
Fig. 3 c be in Fig. 3 a A to partial view.
Fig. 4 is that a kind of slide bar type punching engine of the present invention becomes the cooling flowing path figure of mode adjustable throat jet pipe.
1. driving lever, 2. secondary adjusting rods, 3. sliding pins, 4. double hinge mechanisms, 5. convergence adjustment sheets, 6. double hinge mechanisms, 7.
Sliding bar, 71. elongated slots, 8. active segments, 9. cooling ducts, 10. sliding pins, 11. reinforced sheets, 12. fixed sections, 13. jet pipe outer covers,
14. double hinge mechanism, 15. sliding slots, 16. sliding blocks, 17. linkages, 18. double hinge mechanisms, 19. Divergent flaps, 20. is close
Mounting, 21. connecting rods, 22. support plates, 23. front inner walls, 24. elongated slots, 25. toroidal cavities, 26. engine crankcases, 27. combustion chambers
Heat screen, 28. channels, 29. thermal insulation boards, 30. channels, 31. nozzle throats, 32. gaps, 33. straight pins, 34. hinges.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments.Following embodiment is merely to illustrate this hair
It is bright, it is not limited to protection scope of the present invention.
As shown in Figure 1, a kind of punching engine of the present invention becomes mode adjustable throat jet pipe, it includes driving lever 1, movement
Secondary adjusting rod 2, sliding bar 7, sliding block 16, multiple convergence adjustment sheets 5 and Divergent flap 19, driving lever 1 connect prismatic pair and adjust
Bar 2, prismatic pair adjusting rod 2 connect sliding bar 7 by double hinge mechanism 18, along circumferentially disposed multiple of nozzle throat 19（Such as 9
It is a）Adjustment sheet 5 is restrained, each both ends for restraining adjustment sheet 5 and centre are respectively there are one double hinge mechanism 4,6 and 14, along jet pipe larynx
The circumferentially disposed multiple Divergent flaps 19 in road 31, the front end of each Divergent flap 19 pass through linkage 6 and corresponding receipts
It holds back adjustment sheet 5 to be connected, convergence adjustment sheet 5 connects sliding bar 7 by linkage 14, and sliding bar 7 is by linkage 17 with sliding
Block 16 connects, and sliding block 16 can be free to slide in sliding slot 15, and sliding slot 15 is fixed on jet pipe outer cover 13.
Divergent flap 19 includes active segment 8 and fixed section 12, the rear end of active segment 8 by sliding pin 10 with it is corresponding solid
Determine section 12 to connect.
Elongated slot 71 is provided on sliding bar 7, and can guarantee that sliding pin 3 can be free to slide in elongated slot 71, sliding pin 3 is fixed on spray
On pipe outer cover 13.
When adjusting rod 2 upstream axially moves, rotated by sliding bar 7 around sliding pin 3, drive convergence adjustment sheet 5 around
Linkage 4 rotates.There was only one degree of freedom due to entire kinematic chain and operated by a driving lever 1, motion is stablized.It is main
Lever 1 is also the main load supporting system of the adjustable jet of the present invention, and the function of adjustable jet is implemented mainly by it.
Divergent flap 5 includes 12 two parts of active segment 8 and fixed section.
（1）, active segment
As shown in Figure 1, the forepart of active segment 8 is connected by linkage 6 with convergence adjustment sheet 5, the rear portion of active segment 8 is then
It is inserted in the elongated slot 24 on 12 front end reinforced sheet 11 of fixed section by sliding pin 10, therefore, when convergence adjustment sheet 5 is cooked angular motion
When changing throat area, the front end of the active segment 8 of Divergent flap 5, which is also followed by, does angular motion.
Active segment 8 due to circumferentially middle section contacts combustion gas, wall temperature is higher, therefore outside Divergent flap 19
The cooling duct 9 of a rectangular section is designed on back.
Other than main motion chain, it is also not sufficient to ensure that the reliable movement of entire mechanism, the wherein adjacent expansion tune of each two
It must be provided with diaphragm seal 20 between nodal plate 19, as shown in Figure 2.It is assisted between diaphragm seal 20 and adjacent adjustment sheet 19 by synkinesia chain
Adjust the movement between them.
Referring to Fig. 2, which is made of connecting rod 21, straight pin 33 and hinge 34, each adjustment sheet 19 and sealing
It placed a straight pin 33 on piece 20, connecting rod 21 on straight pin 33 be set, is connected between two connecting rods 21 by hinge 34.
Therefore, when numerous Divergent flaps 19 and diaphragm seal 20 do the relative angular displacement of circumferencial direction, this kinematic chain may insure it
Between all there are one determining angular distribution, and be unlikely to fall into irregular tamper.When diaphragm seal 20 is adjusted relative to expansion
Nodal plate 19 pulls open or during closing movement, and connecting rod 21 then does angular rotation around respective axis pin, and phase angle is equal.
（2）, fixed section
The fixed section 12 of Divergent flap 19 be a section be right angled triangle box-like structure, referring to Fig. 1 and Fig. 3 a ~
3c, forepart is a toroidal cavity 25, circumferentially using more（Such as 12）Support plate 22 is connected with pipe inside and outside wall, therefore structure is firm
It leans on, so as to make the structure of entire adjustable throat jet pipe more firm.
Polylith is designed in the front inner wall 23 of fixed section 12（Such as 9 pieces）Reinforced sheet 11, and opened on each reinforced sheet
There is elongated slot 24, to ensure that the sliding pin 10 of the rear end of Divergent flap 19 is free to slide in elongated slot 24.
Fixed section 12 is directly made of one with the outer cover of jet pipe 13, therefore relatively simple for structure, reliable.
The cooling scheme of the present invention is as shown in Figure 4.1. it is labelled with what outer cooling air-flow A2 cooled down jet pipe in Fig. 4
Region, and 2. it is labelled with the region that interior cooling air-flow A1 cools down jet pipe.It employs interior cold with the outer cold type of cooling being combined.
Cooling structure converging portion, thermal insulation board add expansion segment gaseous film control, and interior cold air intake ducts of the cooling air-flow A1 from engine is external cold
But air-flow A2 comes from air intake duct or auxiliary intake valve.In convergence adjustment sheet 5 and diaphragm seal（It is not shown in figure）Upper each one piece of riveting
Thermal insulation board 29, the height of the channel 30 between thermal insulation board 29 and convergence adjustment sheet 5 is more than engine crankcase 26 and combustion chamber is heat-insulated
28 height of channel between screen 27.In this way, from the cooling air-flow A1 that channel 28 flows out substantially completely flow channel 30.Cooling
Air-flow A1 can cool down convergence adjustment sheet 5 and diaphragm seal, after its flow pass 30, be formed about in nozzle throat 31 strong together
Cooling air film, can effectively coolant expansion adjustment sheet 19 and diaphragm seal 20（Attached drawing 2）.On 19 outside back of Divergent flap
It is provided with cooling duct 9（Such as the cooling duct 9 of rectangular section）, to strengthen the cooling to Divergent flap 19.
Active segment 8 and fixed section 12 are designed to due to Divergent flap 19 and there are gap 32, outer cold airflows between the two
A2 can be flowed into from gap 32 inside jet pipe, in this way can better coolant expansion adjustment sheet 19 fixed section 12, so as to overcome
The shortcomings that back segment of prior art expansion segment cannot be cooled down preferably.The flow of outer cooling air-flow A2 accounts for about the total air inflow of engine
1% ~ 3%.
Outer cooling air A2 enters in the jet pipe ring cavity 25 being made of adjustment sheet and jet pipe outer cover 13, can not only cool down tune
Nodal plate outside wall surface, and can cooling spray pipe intracavitary moving link and hydraulic pressure do system.
Claims (3)
1. a kind of slide bar type punching engine becomes mode adjustable throat jet pipe, it is characterised in that：It includes driving lever, prismatic pair tune
Pole, sliding bar, sliding block, multiple convergence adjustment sheets and Divergent flap, the driving lever connect prismatic pair adjusting rod, the shifting
Dynamic pair adjusting rod connects sliding bar, the multiple convergence adjustment sheets circumferentially disposed along nozzle throat, Mei Geshou by double hinge mechanism
The both ends of adjustment sheet and intermediate respectively there are one double hinge mechanism, the multiple Divergent flaps circumferentially disposed along nozzle throat are held back, often
The front end of a Divergent flap is connected by linkage with corresponding convergence adjustment sheet；The convergence adjustment sheet passes through Link chain device
Structure connects sliding bar, and the sliding bar is connect by linkage with sliding block, and the sliding block can be free to slide in sliding slot, institute
Sliding slot is stated to be fixed on jet pipe outer cover；The Divergent flap includes active segment and fixed section, and the forepart of the active segment passes through
Linkage is connected with convergence adjustment sheet, and the rear end of the active segment is connected by sliding pin with corresponding fixed section；It is described solid
Determine to be provided with polylith reinforced sheet in the front inner wall of section, elongated slot, the sliding pin at the active segment rear portion are provided on each reinforced sheet
It is inserted in elongated slot；The fixed section of the Divergent flap be a section be right angled triangle box-like structure, the fixed section
Forepart be toroidal cavity, be circumferentially connected using more support plates with pipe inside and outside wall；Elongated slot is provided on the sliding bar, it is described
The freely slidable sliding pin of setting, the sliding pin are fixed on jet pipe outer cover in elongated slot.
2. a kind of slide bar type punching engine according to claim 1 becomes mode adjustable throat jet pipe, it is characterised in that：Institute
State the cooling duct that a rectangular section is set outside Divergent flap on back.
3. a kind of slide bar type punching engine according to claim 1 becomes mode adjustable throat jet pipe, it is characterised in that：Often
Diaphragm seal between two adjacent Divergent flaps is set, synkinesia chain is set to coordinate it between diaphragm seal and adjacent adjustment sheet
Between movement, the synkinesia chain includes connecting rod, straight pin and hinge, placed on each adjustment sheet and diaphragm seal
One straight pin, sets connecting rod on the straight pin, by hinge connection between two connecting rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384662.2A CN105952550B (en) | 2016-06-02 | 2016-06-02 | A kind of slide bar type punching engine becomes mode adjustable throat jet pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384662.2A CN105952550B (en) | 2016-06-02 | 2016-06-02 | A kind of slide bar type punching engine becomes mode adjustable throat jet pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105952550A CN105952550A (en) | 2016-09-21 |
| CN105952550B true CN105952550B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610384662.2A Active CN105952550B (en) | 2016-06-02 | 2016-06-02 | A kind of slide bar type punching engine becomes mode adjustable throat jet pipe |
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| CN (1) | CN105952550B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611236B (en) * | 2018-12-13 | 2019-12-24 | 西安航天动力研究所 | Pneumatic adjusting adjustable spray pipe with flexible throat insert |
| CN111379645B (en) * | 2018-12-29 | 2022-05-13 | 南京航空航天大学 | Double-throat spray pipe capable of changing throat area and outlet area and method thereof |
| CN110500199B (en) * | 2019-09-29 | 2020-07-21 | 北京动力机械研究所 | Two-dimensional spray pipe adjusting device with adjustable throat and outlet area |
| CN112943480A (en) * | 2021-01-27 | 2021-06-11 | 西北工业大学 | Cooling structure of S-shaped invisible spray pipe of turbofan engine |
| CN113217224B (en) * | 2021-06-21 | 2022-10-28 | 中国航发沈阳发动机研究所 | Spray tube adjusting sheet and heat shield integrated structure |
| CN113530706B (en) * | 2021-08-18 | 2022-08-05 | 中国航发贵阳发动机设计研究所 | Connecting structure of outer adjusting piece and active adjusting piece of engine tail nozzle |
| CN115031260B (en) * | 2022-05-30 | 2023-08-22 | 中国人民解放军空军工程大学 | Adjustable spray pipe with fixed position of outlet throat of rotary detonation combustion chamber |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2608680B1 (en) * | 1986-12-17 | 1989-03-17 | Snecma | ADJUSTABLE TWO-DIMENSIONAL NOZZLE, ESPECIALLY FOR AN AIRPLANE REACTOR |
| US5431344A (en) * | 1993-11-12 | 1995-07-11 | United Technologies Corporation | Sliding throat gas turbine engine nozzle |
| FR2781253B1 (en) * | 1998-07-17 | 2000-08-18 | Snecma | TWO-DIMENSIONAL NOZZLE, CONVERGENT WITH COLD SHUTTERS, TRANSLATABLE |
| CN101576025B (en) * | 2009-06-11 | 2010-11-03 | 北京航空航天大学 | Multi-mode spraying pipe with adjustable throat for ramjet engine |
| CN204476593U (en) * | 2014-08-26 | 2015-07-15 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of mechanism realizing binary plug nozzle airflow direction and control |
| CN104454241B (en) * | 2014-11-27 | 2016-04-20 | 江西洪都航空工业集团有限责任公司 | The engine jet pipe that a kind of larynx footpath is adjustable |
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- 2016-06-02 CN CN201610384662.2A patent/CN105952550B/en active Active
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| CN105952550A (en) | 2016-09-21 |
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