CN115059553B - Adjustable spray pipe controlled by adopting memory alloy deformation drive - Google Patents
Adjustable spray pipe controlled by adopting memory alloy deformation drive Download PDFInfo
- Publication number
- CN115059553B CN115059553B CN202210593345.7A CN202210593345A CN115059553B CN 115059553 B CN115059553 B CN 115059553B CN 202210593345 A CN202210593345 A CN 202210593345A CN 115059553 B CN115059553 B CN 115059553B
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- Prior art keywords
- memory alloy
- driving
- adjusting piece
- driving rod
- driven
- Prior art date
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 74
- 239000007921 spray Substances 0.000 title claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F02K1/82—Jet pipe walls, e.g. liners
-
- 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
- F02K1/15—Control or regulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The application provides an adjustable spray pipe adopting memory alloy deformation driving control, which belongs to the technical field of aero-engine spray pipes and specifically comprises the following steps: a jet pipe front section casing; the active adjusting pieces are distributed at intervals along the circumferential direction of the jet pipe front section casing; the driven regulating pieces are circumferentially distributed between two adjacent driving regulating pieces along the front section casing of the spray pipe; one end of the memory alloy driving rod is connected with the active adjusting piece, and the other end of the memory alloy driving rod is connected with the front section casing of the spray pipe; the temperature control mechanism controls the temperature of the memory alloy driving rod to enable the memory alloy driving rod to stretch out and draw back; one end of the driving adjusting piece and one end of the driven adjusting piece are connected to the front section casing of the spray pipe in a rotating mode, the other end of the driving adjusting piece is a free end, the memory alloy driving rod stretches to drive the driving adjusting piece to rotate, the free end is far away from or close to the axis of the rear section flow channel, and the free end of the driven adjusting piece rotates along with the free end of the driving adjusting piece. By the treatment scheme, the reliability of the spray pipe adjusting mechanism is improved.
Description
Technical Field
The application relates to the field of jet pipes of aeroengines, in particular to an adjustable jet pipe controlled by adopting a memory alloy deformation drive.
Background
Along with the technical development of aeroengines, the matched tail nozzle components are required to have multiple functions such as adjustable retraction and extension, adjustable vector and the like, the corresponding tail nozzle component structure is more and more complex, the traditional engine adjustable tail nozzle components usually adopt an adjustable nozzle scheme which adopts memory alloy deformation driving control and is controlled by controlling movement by a hydraulic driving pull rod, the problems of complex structure, complex control, increased weight, reduced reliability and the like are brought, and new technology is urgently required to be developed to simplify the corresponding design.
Disclosure of Invention
In view of the above, the application provides an adjustable spray pipe which adopts memory alloy deformation driving control, solves the problems in the prior art, simplifies a spray pipe adjusting mechanism and improves the reliability of the spray pipe adjusting mechanism.
The application provides an adjustable spray pipe controlled by adopting a memory alloy deformation drive, which adopts the following technical scheme:
an adjustable nozzle employing memory alloy deformation drive control, comprising:
A jet pipe front section casing;
The active regulating pieces are distributed at intervals along the circumferential direction of the jet pipe front section casing;
the driven regulating pieces are circumferentially distributed between two adjacent driving regulating pieces along the front-section casing of the spray pipe, and the driving regulating pieces and the driven regulating pieces form a rear-section flow passage;
one end of the memory alloy driving rod is connected with the active adjusting piece, and the other end of the memory alloy driving rod is connected with the front section casing of the spray pipe;
the temperature control mechanism controls the temperature of the memory alloy driving rod to enable the memory alloy driving rod to stretch out and draw back;
The device comprises a driving adjusting piece, a driven adjusting piece, a memory alloy driving rod, a driving adjusting piece, a rear section runner and a rear section runner, wherein one end of the driving adjusting piece and one end of the driven adjusting piece are connected to the front section of the spray pipe in a rotating mode, the other end of the driving adjusting piece and the other end of the driven adjusting piece are free ends, the driving adjusting piece is driven to rotate by stretching of the memory alloy driving rod, the free ends are far away from or close to the axis of the rear section runner, and the free ends of the driven adjusting piece rotate along with the free ends of the driving adjusting piece.
Optionally, the adjustable spray pipe controlled by adopting the memory alloy deformation drive further comprises a high-temperature-resistant connecting rod, and the memory alloy drive rod is connected with the active adjusting piece through the high-temperature-resistant connecting rod.
Optionally, a heat insulation pad is arranged between the high-temperature-resistant connecting rod and the memory alloy driving rod.
Optionally, a radially protruding mounting edge is arranged on the outer wall of the rear end of the jet pipe front section casing, and one end of the memory alloy driving rod is hinged to the outer edge of the mounting edge.
Optionally, the lengths of the memory alloy driving rods are controlled in a differentiated mode, and rear-section flow channel outlets with different shapes are obtained.
Optionally, the temperature control mechanism includes constant temperature medium storage spare and distributes the pipe at memory alloy actuating lever periphery, the one end of pipe intercommunication constant temperature medium storage spare's export, the other end of pipe intercommunication constant temperature medium storage spare's return opening.
Optionally, the constant temperature medium storage piece includes a plurality ofly, and is different the medium of different temperatures is stored in the constant temperature medium storage piece, the one end of pipe passes through the shunt valve and communicates a plurality of simultaneously the export of constant temperature medium storage piece, the other end of pipe passes through the shunt valve and communicates a plurality of simultaneously the constant temperature medium storage piece return opening.
Optionally, the catheter is wound around the periphery of the memory alloy drive rod.
Optionally, the driving adjusting piece is disposed outside the driven adjusting piece, and the driving adjusting piece partially covers the adjacent driven adjusting piece.
Optionally, the number of the driving adjusting piece and the driven adjusting piece is 6-15 pieces respectively.
In summary, the application has the following beneficial technical effects: the adjustable spray pipe structure which adopts the memory alloy deformation driving control and adopts the memory alloy deformation driving control for driving control not only can meet the multifunctional complex movement requirements of spray pipe contraction and expansion, vector and the like, but also solves the problems of complex structure and control, high weight and cost and poor reliability of a hydraulic system in the traditional scheme.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an adjustable nozzle employing memory alloy deformation drive control in accordance with the present application;
Fig. 2 is a schematic structural diagram of the temperature control structure of the present application.
Reference numerals illustrate: 1. a jet pipe front section casing; 11. a front end flange; 12. a casing cylinder; 13. a mounting edge; 2. a wedge bolt; 3. a memory alloy driving rod; 4. a high temperature resistant connecting rod; 5. a bolt; 6. a heat insulating pad; 7. an active adjustment tab; 8. a driven regulating piece; 9. a temperature control mechanism; 91. winding a catheter; 92. an inlet diverter valve; 93. an inlet conduit; 94. a loop conduit; 95. a loop diverter valve.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
The embodiment of the application provides an adjustable spray pipe controlled by adopting a memory alloy deformation drive.
As shown in fig. 1 and 2, an adjustable nozzle employing memory alloy deformation drive control, comprising: the front-section casing 1 of the spray pipe is used as a front-section structure of the spray pipe, a front-end flange 11 and a casing cylinder 12 are arranged on the front-section casing 1 of the spray pipe along the axial direction, and when the front-section casing 1 of the spray pipe is installed, the front-section casing 1 of the spray pipe is connected with other parts such as a stress application cylinder and the like through the front-end flange 11, and the profile of the casing cylinder 12 adopts a convergent cone profile to pre-expand the exhaust flow of an engine; a plurality of active regulating pieces 7 which are distributed at intervals along the circumferential direction of the jet pipe front section casing 1; the driven regulating pieces 8 are circumferentially distributed between two adjacent driving regulating pieces 7 along the front-section casing 1 of the spray pipe, and the driving regulating pieces 7 and the driven regulating pieces 8 form a rear-section flow passage; one end of the memory alloy driving rod 3 is connected with the active adjusting piece 7, and the other end is connected with the front section casing 1 of the spray pipe; the temperature control mechanism 9 controls the temperature of the memory alloy driving rod 3 to enable the memory alloy driving rod 3 to stretch and retract, and the temperature control mechanism 9 heats or cools the memory alloy driving rod 3 to enable the length of the memory alloy driving rod 3 to be changed according to a pre-trained shape.
The driving adjusting piece 7 and the driven adjusting piece 8 which are distributed in a crossed mode form a rear-section flow channel, one ends of the driving adjusting piece 7 and the driven adjusting piece 8 are connected to the spray pipe front-section casing 1 in a rotating mode, the other ends of the driving adjusting piece 7 and the driven adjusting piece 8 are free ends, the memory alloy driving rod 3 stretches and stretches to drive the driving adjusting piece 7 to rotate, the free ends are far away from or close to the axis of the rear-section flow channel, the driven adjusting piece 8 and the driving adjusting piece 7 are connected through a connecting piece, the driven adjusting piece 8 can rotate along with the driving adjusting piece 7, and the free ends of the driven adjusting piece 8 can rotate along with the driving adjusting piece 7. Different nozzle outlet areas can be obtained by controlling the rotation of the driving adjusting piece 7 and the driven adjusting piece 8 so as to meet the requirements of the nozzle outlet areas under different engine states.
The memory alloy driving rod 3 adopts a Cu-based (copper-based) or NiTi-based (nickel-titanium-based) memory alloy material.
The adjustable spray pipe controlled by adopting the memory alloy deformation drive also comprises a high-temperature-resistant connecting rod 4, and the memory alloy drive rod 3 is connected with the active regulating piece 7 through the high-temperature-resistant connecting rod 4. A heat insulation pad 6 is arranged between the high-temperature resistant connecting rod 4 and the memory alloy driving rod 3. Because the temperature of the spray pipe is higher, and the memory Cu-based or NiTi-based memory alloy material has poor temperature resistance, one end of the memory alloy driving rod 3 is connected with one end of the high-temperature-resistant alloy material and one end of the high-temperature-resistant connecting rod 4, and the heat insulation pad 6 is arranged between the two, the memory alloy driving rod 3 and the high-temperature-resistant connecting rod 4 are connected through the bolt 5, so that the influence of the temperature of the spray pipe on the process of controlling the temperature of the memory alloy driving rod 3 by the temperature control mechanism 9 is reduced.
The outer wall of the rear end of the spray pipe front section casing 1 is provided with a mounting edge 13 protruding in the radial direction, and one end of the memory alloy driving rod 3 is hinged to a first lug on the outer edge of the mounting edge 13. The middle rear part of the active adjusting piece 7 is provided with a second lug, and one end of the high-temperature resistant connecting rod 4 is hinged on the second lug.
The driving adjusting piece 7 is arranged on the outer side of the driven adjusting piece 8, and the driving adjusting piece 7 partially covers the adjacent driven adjusting piece 8, so that the nozzle outlet is in a certain adjusting range, the driving adjusting piece 7 and the driven adjusting piece 8 are always overlapped, and the completeness of the side face of the nozzle outlet is ensured. The number of the driving adjusting pieces 7 and the driven adjusting pieces 8 is 6-15 respectively, and the driving adjusting pieces 7 and the driven adjusting pieces 8 are flat plate type structural molded surfaces. According to the embodiment of the application, the driving adjusting piece 7 and the driven adjusting piece 8 are 6 pieces respectively, are mutually crossed and distributed along the circumferential direction, and are respectively arranged on the rear mounting edge 13 of the jet pipe front section casing 1 through wedge head bolts 2 and hinges, so that a quasi-circular adjustable flow channel at the rear section of the jet pipe is formed.
The temperature control mechanism 9 comprises a constant temperature medium storage part and guide pipes distributed on the periphery of the memory alloy driving rod 3, one end of each guide pipe is communicated with an outlet of the constant temperature medium storage part, and the other end of each guide pipe is communicated with a return port of the constant temperature medium storage part. The constant temperature medium storage piece includes a plurality ofly, and is different the medium of different temperatures is stored in the constant temperature medium storage piece, and the constant temperature medium storage piece can be the bin, and the medium in the bin can be water or oil, the one end of pipe passes through the shunt valve and communicates a plurality of simultaneously the export of constant temperature medium storage piece, the other end passes through the shunt valve and communicates a plurality of simultaneously the constant temperature medium storage piece return opening. The catheter is wound around the outer circumference of the memory alloy driving rod 3.
The conduits include a winding conduit 91, an inlet conduit 93 and a loop conduit 94 which are communicated, one end of the winding conduit 91 is communicated with a plurality of inlet conduits 93 through an inlet diverter valve 92 so as to be communicated with the outlets of different constant temperature medium storage pieces, and the other end of the winding conduit 91 is communicated with a plurality of loop conduits 94 through a loop diverter valve 95 so as to be communicated with the loop mouths of a plurality of constant temperature medium storage pieces.
When the intelligent engine is in operation, constant temperature source heat exchange media with different temperatures enter the winding guide pipe 91 through the inlet guide pipe 93 according to the needs by controlling the flow dividing valve, the memory alloy driving rod 3 is heated or cooled, the length of the memory alloy driving rod is changed according to the pre-trained form, and the driving adjusting piece 7 and the driven adjusting piece 8 rotate, so that different spray pipe outlet areas are obtained, and the requirements on the spray pipe outlet areas under different engine states are met; the heat exchange medium after heat exchange is returned to the corresponding constant temperature source through the loop diverter valve 95 and the loop conduit 94, so that the medium can be recycled. In addition, by implementing differential control of the heat exchange medium, different memory alloy drive rods 3 can be controlled in length, so that different outlet shape combinations are obtained, which can realize vector deflection, elliptical deformation, or even arbitrary shape deformation of the nozzle.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (9)
1. An adjustable nozzle controlled by adopting a memory alloy deformation drive, which is characterized by comprising:
A jet pipe front section casing;
The active regulating pieces are distributed at intervals along the circumferential direction of the jet pipe front section casing;
the driven regulating pieces are circumferentially distributed between two adjacent driving regulating pieces along the front-section casing of the spray pipe, and the driving regulating pieces and the driven regulating pieces form a rear-section flow passage;
one end of the memory alloy driving rod is connected with the active adjusting piece, and the other end of the memory alloy driving rod is connected with the front section casing of the spray pipe;
The temperature control mechanism controls the temperature of the memory alloy driving rod to enable the memory alloy driving rod to stretch out and draw back, the temperature control mechanism comprises a constant temperature medium storage part and guide pipes distributed on the periphery of the memory alloy driving rod, one end of each guide pipe is communicated with an outlet of the constant temperature medium storage part, and the other end of each guide pipe is communicated with a return port of the constant temperature medium storage part;
The device comprises a driving adjusting piece, a driven adjusting piece, a memory alloy driving rod, a driving adjusting piece, a rear section runner and a rear section runner, wherein one end of the driving adjusting piece and one end of the driven adjusting piece are connected to the front section of the spray pipe in a rotating mode, the other end of the driving adjusting piece and the other end of the driven adjusting piece are free ends, the driving adjusting piece is driven to rotate by stretching of the memory alloy driving rod, the free ends are far away from or close to the axis of the rear section runner, and the free ends of the driven adjusting piece rotate along with the free ends of the driving adjusting piece.
2. The variable nozzle controlled by the memory alloy deformation drive according to claim 1, wherein the variable nozzle controlled by the memory alloy deformation drive further comprises a high-temperature-resistant connecting rod, and the memory alloy driving rod is connected with the active adjusting piece through the high-temperature-resistant connecting rod.
3. The variable nozzle controlled by the memory alloy deformation drive according to claim 2, wherein a heat insulating pad is arranged between the high temperature resistant connecting rod and the memory alloy driving rod.
4. The adjustable nozzle adopting memory alloy deformation driving control according to claim 1, wherein a mounting edge protruding in the radial direction is arranged on the outer wall of the rear end of the front section casing of the nozzle, and one end of the memory alloy driving rod is hinged on the outer edge of the mounting edge.
5. The adjustable nozzle adopting the memory alloy deformation driving control according to claim 1, wherein the length of the memory alloy driving rod is controlled differently, so that the rear-stage runner outlets with different shapes are obtained.
6. The adjustable nozzle adopting memory alloy deformation driving control according to claim 1, wherein the constant temperature medium storage parts comprise a plurality of constant temperature medium storage parts, different mediums with different temperatures are stored in the constant temperature medium storage parts, one end of the guide pipe is simultaneously communicated with the outlets of the plurality of constant temperature medium storage parts through the flow dividing valve, and the other end of the guide pipe is simultaneously communicated with the return openings of the plurality of constant temperature medium storage parts through the flow dividing valve.
7. The variable nozzle controlled by the memory alloy deformation drive according to claim 1, wherein the guide pipe is wound around the outer circumference of the memory alloy driving rod.
8. The variable nozzle of claim 1, wherein the driving adjustment piece is disposed outside the driven adjustment piece, and the driving adjustment piece partially covers the adjacent driven adjustment piece.
9. The variable nozzle controlled by the deformation drive of the memory alloy according to claim 1, wherein the number of the driving adjusting piece and the driven adjusting piece is 6-15 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593345.7A CN115059553B (en) | 2022-05-27 | 2022-05-27 | Adjustable spray pipe controlled by adopting memory alloy deformation drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210593345.7A CN115059553B (en) | 2022-05-27 | 2022-05-27 | Adjustable spray pipe controlled by adopting memory alloy deformation drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115059553A CN115059553A (en) | 2022-09-16 |
| CN115059553B true CN115059553B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210593345.7A Active CN115059553B (en) | 2022-05-27 | 2022-05-27 | Adjustable spray pipe controlled by adopting memory alloy deformation drive |
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| CN115059553A (en) | 2022-09-16 |
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