CN113217224A - Spray tube adjusting sheet and heat shield integrated structure - Google Patents
Spray tube adjusting sheet and heat shield integrated structure Download PDFInfo
- Publication number
- CN113217224A CN113217224A CN202110684892.1A CN202110684892A CN113217224A CN 113217224 A CN113217224 A CN 113217224A CN 202110684892 A CN202110684892 A CN 202110684892A CN 113217224 A CN113217224 A CN 113217224A
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- China
- Prior art keywords
- heat shield
- cooling channel
- spray tube
- heat
- spray
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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
- F02K1/78—Other construction of jet pipes
- F02K1/82—Jet pipe walls, e.g. liners
- F02K1/822—Heat insulating structures or liners, cooling arrangements, e.g. post combustion liners; Infra-red radiation suppressors
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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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- 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
- F02K1/822—Heat insulating structures or liners, cooling arrangements, e.g. post combustion liners; Infra-red radiation suppressors
- F02K1/825—Infra-red radiation suppressors
Abstract
The application relates to the field of aircraft engines, concretely relates to spray tube adjustment piece and heat screen integral structure, including spray tube adjustment piece and heat screen, form cooling channel between spray tube adjustment piece and the heat screen, the heat screen includes the cold gas side that is close to cooling channel one side, the gas side that is close to gas channel one side, spray tube adjustment piece and heat screen integrated into one piece, be equipped with between heat screen and the spray tube adjustment piece with heat screen and spray tube adjustment piece integrated into one piece locate the connection structure in the cooling channel. The spray pipe has the technical effects of improving the heat insulation and stealth performance of the spray pipe.
Description
Technical Field
The application belongs to the field of aircraft engines, and particularly relates to a spray pipe adjusting sheet and heat shield integrated structure.
Background
The stealth capability has become the essential key technology of the advanced fighter, and the binary jet pipe is widely researched and applied in various countries in the world due to the advantages that the binary jet pipe is beneficial to the integrated fusion design with the rear fuselage of the airplane, the profile of the binary jet pipe is beneficial to the shape modification design, the tail jet flow of the binary jet pipe is beneficial to being mixed with the outside air flow to reduce the infrared radiation of the jet flow, and the like.
The nozzle adjusting sheet is an important component of the nozzle, and the adjusting sheet can adjust the throat area and the outlet area of the nozzle under the driving of an actuating system, so that the performance of the engine is adjusted; the design of the flaps and the heat shields thereon is critical to the design of the nozzle.
The nozzle adjusting sheet is usually made of light alloy materials, a high-temperature alloy heat shield needs to be connected to the adjusting sheet in order to avoid contacting high-temperature gas, and the heat shield is usually fixed on the adjusting sheet in a bolt and bushing mode. Although the mode is high in reliability, a large number of bolt heads are not beneficial to stealth, meanwhile, the heat shield in the connection mode belongs to a large thin-wall sheet metal part and is easy to deform at high temperature, and once the heat shield is damaged, high-temperature gas of an engine enters a cold air side and is easy to damage an adjusting sheet. Therefore, it is necessary to design a connection structure for improving the heat insulation capability and the stealth capability of the heat shield and preventing the high-temperature gas from entering the nozzle adjustment sheet on the cold gas side and the heat shield.
Disclosure of Invention
The application aims at providing a spray pipe adjusting sheet and heat shield integrated structure to solve the problem that in the prior art, the leakage of a bolt head affects heat insulation and stealth performance.
The technical scheme of the application is as follows: the utility model provides a spray tube adjustment piece and heat screen integral structure, includes spray tube adjustment piece and heat screen, form cooling channel between spray tube adjustment piece and the heat screen, the heat screen includes the cold gas side that is close to cooling channel one side, the gas side that is close to gas channel one side, spray tube adjustment piece and heat screen integrated into one piece, be equipped with between heat screen and the spray tube adjustment piece with heat screen and spray tube adjustment piece integrated into one piece locate the connection structure in the cooling channel.
Preferably, the connection structure is a lattice structure.
Preferably, the total multiunit of lattice structure is violently indulged and is closely arranged, lattice structure includes horizontal pole, vertical pole, left down tube and right down tube, the both ends of vertical pole, left down tube and right down tube link to each other with heat screen and spray tube adjustment sheet respectively, the horizontal pole is on a parallel with the spray tube adjustment sheet setting, and is adjacent the middle part interconnect of horizontal pole, vertical pole, left down tube and right down tube.
Preferably, the surfaces of the gas side of the heat shield, the cold side of the heat shield, the side of the nozzle regulator blade close to the cooling channel, and the side of the nozzle regulator blade far from the cooling channel are smooth surfaces.
Preferably, the nozzle adjusting sheet, the heat shield and the connecting structure are all made of high-temperature alloy.
Preferably, the nozzle adjusting sheet, the heat shield and the connecting structure are processed by 3D printing.
The utility model provides a spray tube adjustment piece and heat screen connection structure, includes spray tube adjustment piece and heat screen, form cooling channel between spray tube adjustment piece and the heat screen, the heat screen is including the cold gas side that is close to cooling channel one side, the gas side that is close to gas channel one side, heat screen cold gas side welding has the double-screw bolt, the mounting hole has been seted up to the position department that corresponds the double-screw bolt on the spray tube adjustment piece, the other end of double-screw bolt stretches into in the mounting hole and stretches out to spray tube adjustment piece from the mounting hole and keeps away from cooling channel one side, be equipped with on the double-screw bolt and can dismantle the fixed subassembly of being connected with the spray tube adjustment piece.
Preferably, the fixing assembly comprises a nut and a support ring, the stud is located on one side, away from the cooling channel, of the nozzle adjusting sheet and is provided with threads, the nut is connected to the stud in a threaded mode, the support ring is connected to the stud in a coaxial mode, and the support ring is attached to one side, close to the cooling channel, of the nozzle adjusting sheet.
A binary stealth nozzle comprises a round square section, a convergence section and an expansion section which are connected in sequence, wherein the round square section, the convergence section and the expansion section are respectively provided with a nozzle adjusting sheet and a heat shield structure according to any one of claims 1 to 8.
Preferably, a first cooling channel penetrating through two ends is arranged in the circular and square section, a second cooling channel penetrating through two ends is arranged in the convergence section, a third cooling channel penetrating through two ends is arranged in the expansion section, and the first cooling channel, the second cooling channel and the third cooling channel are communicated with each other.
The spray pipe adjustment piece, heat screen and dot matrix structure through adopting the integrated design of this application improve stealthy performance and heat-proof quality to owing to not set up the bolt, weight reduces by a wide margin, and the space that the dot matrix structure took when guaranteeing the joint strength of spray pipe adjustment piece between the heat screen is less, in order to guarantee that air conditioning circulates fast.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
FIG. 1 is a schematic overall cross-sectional view of an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of the second embodiment of the present application;
fig. 3 is a schematic cross-sectional structure view of the third embodiment of the present application.
1-nozzle flap; 2-a heat shield; 3-a cooling channel; 4-a cross bar; 5-a longitudinal bar; 6-left diagonal rod; 7-right diagonal rod; 8-a stud; 9-a support ring; 10-thread; 11-round to square section; 12-a convergence section; 13-an expansion section; 14-housing.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In the first embodiment, a spray pipe regulating sheet and heat shield integrated structure is shown in fig. 1, and includes a spray pipe regulating sheet 1 and a heat shield 2, a cooling channel 3 is formed between the spray pipe regulating sheet 1 and the heat shield 2, the heat shield 2 includes a cold air side close to one side of the cooling channel 3 and a fuel gas side close to one side of the fuel gas channel, the spray pipe regulating sheet 1 and the heat shield 2 are integrally formed, and a connecting structure which is integrally formed with the heat shield 2 and the spray pipe regulating sheet 1 and is arranged in the cooling channel 3 is arranged between the heat shield 2 and the spray pipe regulating sheet 1.
Set up spray tube adjustment sheet 1 and heat screen 2 through the integration, heat screen 2 and spray tube adjustment sheet 1 realize mutual support through connection structure, the cooling side of spray tube adjustment sheet 1 can not stretch out there is the bolt head, thereby the stealthy performance of spray tube has been guaranteed, and because need not set up the mounting hole that corresponds the setting with the bolt on the heat screen 2, the intensity of heat screen 2 is guaranteed, the resistance to deformation ability under the high temperature obtains increasing, the anti warpage deformability of heat screen 2 increases, engine high temperature gas is difficult to enter into the cooling side and causes the damage to the adjustment sheet.
Because no bolt is arranged, the overall weight of the nozzle adjusting sheet 1 and the heat shield 2 is reduced, and the self weight of the airplane is reduced. And because the integrated molding design is adopted, the assembly process is reduced, the matching tightness of the spray pipe adjusting sheet 1 and the heat shield 2 is high, and the assembly error is reduced, so that the connection precision with other components is improved.
The spray pipe adjusting sheet 1 and the heat shield 2 are correspondingly arranged, the spray pipe adjusting sheet 1 is arranged between the gas channel and the cooling channel 3, one side of the heat shield 2 is attached to the cooling channel 3, and the other side of the heat shield is used for arranging an adjusting sheet adjusting mechanism.
Preferably, the connection structure is a lattice structure. Because lattice structure locates in cooling channel 3, cooling channel 3 need carry out the transmission of air conditioning, and lattice structure is crossed in air conditioning transmission process, because lattice structure's design is when being connected with spray tube adjustment sheet 1 and heat screen 2, and occupation space is lower, has guaranteed refrigerated effective transmission.
Preferably, the total multiunit of lattice structure is violently indulged and is closely arranged, lattice structure includes horizontal pole 4, vertical pole 5, left down tube 6 and right down tube 7, and the both ends of vertical pole 5, left down tube 6 and right down tube 7 link to each other with heat screen 2 and spray tube adjustment sheet 1 respectively, and horizontal pole 4 is on a parallel with the setting of spray tube adjustment sheet 1, and adjacent horizontal pole 4, vertical pole 5, the middle part interconnect of left down tube 6 and right down tube 7 are located the same horizontal pole 4 of lattice structure total of same horizontal pole 4 or same vertical column. By adopting the lattice structure arranged in the mode, the connection strength between the spray pipe adjusting sheet 1 and the heat shield 2 is effectively ensured.
Preferably, the surfaces of the heat shield 2 on the gas side and the cold side, and the nozzle flap 1 on the cold side and the side away from the cooling channel 3 are smooth surfaces, i.e. the heat shield 2 and the nozzle flap 1 are not provided with openings, protrusions, etc. themselves. The gas side of the heat shield 2 is smooth when the gas of the gas side is ensured to flow out for the smooth surface, the thrust performance of the spray pipe when the gas is sprayed is improved, the cold gas side of the heat shield 2 and the cold gas side of the spray pipe adjusting sheet 1 are smooth surfaces, so that the separation of the cooling gas in the cooling channel 3 is less, and the rapid circulation of the cooling gas is ensured. The cold gas side of the regulating sheet is a smooth surface, so that the actuating mechanism is conveniently connected with the regulating sheet for regulation.
Preferably, spray tube adjustment sheet 1, heat screen 2, lattice structure's material is superalloy, superalloy has stronger heat-proof quality and heat-resisting ability, the heat in the gas channel passes through spray tube adjustment sheet 1 and heat screen 2's dual thermal-insulated back, heat-proof ability strengthens by a wide margin, the temperature in the spray tube outside effectively reduces, spray tube adjustment sheet 1 is because having stronger heat-resisting ability, can not receive the damage of high temperature gas, on the other hand air conditioning in cooling channel 3 is under spray tube adjustment sheet 1 and heat screen 2's dual isolation, the protective capacities to air conditioning is stronger, air conditioning loses still less.
Preferably, the nozzle adjusting sheet 1, the heat shield 2 and the connecting structure are printed and processed in a 3D mode, and efficient processing can be achieved. And certainly not limited to processing in a conventional manner such as a mold.
In the second embodiment, a connection structure of a nozzle flap and a heat shield is shown in fig. 2, and includes a nozzle flap 1 and a heat shield 2, a cooling channel 3 is formed between the nozzle flap 1 and the heat shield 2, the heat shield 2 is opposite to the nozzle flap 1, and the heat shield 2 is located on a side of the nozzle flap 1 away from a gas channel. The heat shield 2 includes a cold gas side adjacent to the cooling passage 3 side and a gas side adjacent to the gas passage side.
The double-screw bolt 8 of 2 lateral wall directions of heat-proof screen 2 air conditioning side weldings of heat-proof screen 2, and the mounting hole has been seted up to the position department that spray tube adjustment sheet 1 corresponds double-screw bolt 8, and the other end of double-screw bolt 8 stretches into in the mounting hole and stretches out to one side that cooling channel 3 was kept away from to spray tube adjustment sheet 1 in the mounting hole, is equipped with the fixed subassembly of can dismantling the connection with spray tube adjustment sheet 1 on the double-screw bolt 8.
8 one end of double-screw bolt and heat shield 2 welded fit, the other end and spray tube adjustment sheet 1 fixed fit, the gas side of heat shield 2 is smooth surface like this, has improved the stealthy performance of spray tube.
Because some mounting holes can not be seted up because of connecting bolt on the heat shield 2, guaranteed the intensity of heat shield 2, improved heat shield 2's resistance to deformation ability, engine high temperature gas is difficult to enter into the air conditioning side of heat shield 2 and causes the damage to the adjustment sheet.
Because the bolt is replaced by the stud 8 structure, the stud 8 does not have a head part, the occupied weight is reduced, and because the number of the required studs 8 between the spray pipe adjusting sheet 1 and the heat shield 2 is large, the whole weight of the spray pipe can be reduced remarkably.
Preferably, the fixing assembly comprises a nut (not shown) and a support ring 9, the stud 8 being provided with a thread 10 on the side of the nozzle flap 1 remote from the cooling channel 3, the nut thread 10 being connected to the stud 8, the support ring 9 being coaxially connected to the stud 8, the support ring 9 abutting the side of the nozzle flap 1 adjacent to the cooling channel 3. The nut is stably matched with the support ring 9 to realize the stable fixation of the stud 8 and the spray pipe adjusting sheet 1.
Third embodiment, a binary stealth nozzle, as shown in fig. 3, includes a round and square section 11, a convergent section 12, an expansion section 13, and an outer cover 14, which are connected in sequence.
The entry end of circle square section 11 is circular structure, exit end and is linear along circular structure and dwindles, gradually changes to square structure to the size of entrance is greater than the size of exit end, and convergence section 12 is linear by entry end to exit end and dwindles gradually, forms the choke, and the expansion end is linear crescent by entry end to exit end, forms the injection pipe. The outlet of the round and square section 11 is communicated with the inlet of the convergent section 12, and the outlet of the convergent section 12 is communicated with the inlet of the divergent section 13.
The best performance is achieved when the gas stream is expanded to a static pressure at the nozzle exit that is just equal to the ambient atmospheric pressure, referred to as a fully expanded nozzle. The caliber from the expansion section 13 to the convergence section 12 is gradually reduced, the static pressure is gradually increased when the fuel gas sequentially enters the expansion section 13 and the convergence section 12, and the caliber is gradually increased when the fuel gas enters the expansion section 13, so that expansion is realized. With the arrangement, the excellent expansion performance of the fuel gas can be ensured when the fuel gas reaches the outlet of the expansion section 13.
The rounded square section 11, the converging section 12 and the diverging section 13 are each provided with a heat shield 2 and a nozzle flap 1 as described in the first and second embodiments. The round and square section 11 is hinged with the nozzle regulating blade 1 of the convergent section 12, and the convergent section 12 is hinged with the nozzle regulating blade 1 of the divergent section 13. A first cooling channel penetrating through two ends is formed between the heat shield 2 and the spray pipe adjusting sheet 1 in the circular and square section 11, a second cooling channel penetrating through two ends is arranged between the heat shield 2 and the spray pipe adjusting sheet 1 in the convergence section 12, and a third cooling channel penetrating through two ends is arranged between the heat shield 2 and the spray pipe adjusting sheet 1 in the expansion section 13. The first cooling channel, the second cooling channel and the third cooling channel are communicated with each other.
The design of the cooling channel 3 enables cooling air in the round square section 11, the convergent section 12 and the divergent section 13 to flow to a main flow of the spray pipe through the air film holes, a layer of cold air film is formed on the wall surface, the metal is protected, meanwhile, the temperature of the metal surface can be reduced, the reduction of infrared radiation signals is facilitated, and the stealth performance is improved.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a spray tube flap and heat shield integral structure, includes spray tube flap (1) and heat shield (2), form cooling channel (3) between spray tube flap (1) and heat shield (2), heat shield (2) are including the cold gas side that is close to cooling channel (3) one side, the gas side that is close to gas passageway one side, its characterized in that: spray tube adjustment sheet (1) and heat screen (2) integrated into one piece, be equipped with between heat screen (2) and spray tube adjustment sheet (1) with heat screen (2) and spray tube adjustment sheet (1) integrated into one piece locate the connection structure in cooling channel (3).
2. The integrated nozzle flap and heat shield structure of claim 1, wherein: the connecting structure is a lattice structure.
3. The integrated nozzle trim and heat shield structure of claim 2, wherein: lattice structure is total multiunit and violently indulges closely range, lattice structure includes horizontal pole (4), vertical pole (5), left down tube (6) and right down tube (7), the both ends of vertical pole (5), left down tube (6) and right down tube (7) link to each other with heat screen (2) and spray tube adjustment sheet (1) respectively, horizontal pole (4) are on a parallel with spray tube adjustment sheet (1) setting, and are adjacent the middle part interconnect of horizontal pole (4), vertical pole (5), left down tube (6) and right down tube (7).
4. The integrated nozzle flap and heat shield structure of claim 1, wherein: the gas side of heat shield (2), the cold gas side of heat shield (2), being close to cooling channel (3) one side of spray pipe adjustment sheet (1), spray pipe adjustment sheet (1) keep away from cooling channel (3) one side surface is smooth surface.
5. The integrated nozzle flap and heat shield structure of claim 1, wherein: the material of the spray pipe adjusting sheet (1), the heat shield (2) and the connecting structure is high-temperature alloy.
6. The integrated nozzle flap and heat shield structure of claim 1, wherein: the spray pipe adjusting sheet (1), the heat shield (2) and the connecting structure are printed and processed in a 3D mode.
7. The utility model provides a spray tube flap and heat shield connection structure, includes spray tube flap (1) and heat shield (2), form cooling channel (3) between spray tube flap (1) and heat shield (2), heat shield (2) are including the cold gas side that is close to cooling channel (3) one side, the gas side that is close to gas passageway one side, its characterized in that: heat-shield (2) air conditioning side welding has double-screw bolt (8), the mounting hole has been seted up to the position department that corresponds double-screw bolt (8) on spray tube adjustment sheet (1), the other end of double-screw bolt (8) stretches into to the mounting hole and stretches out to spray tube adjustment sheet (1) from the mounting hole and keeps away from cooling channel (3) one side, be equipped with on double-screw bolt (8) and can dismantle the fixed subassembly of being connected with spray tube adjustment sheet (1).
8. The nozzle flap and heat shield connection according to claim 7, wherein: the fixing assembly comprises a nut and a support ring (9), the stud (8) is located on the side, away from the cooling channel (3), of the spray pipe adjusting sheet (1) and is provided with threads (10), the nut threads (10) are connected onto the stud (8), the support ring (9) is coaxially connected onto the stud (8), and the support ring (9) is attached to one side, close to the cooling channel (3), of the spray pipe adjusting sheet (1).
9. The utility model provides a binary stealthy spray tube, is including circle square segment (11), convergent section (12) and the expansion section (13) that connect gradually, its characterized in that: the circular square section (11), the convergent section (12) and the divergent section (13) are provided with the nozzle regulator (1) and the heat shield (2) structure according to any one of claims 1 to 8.
10. The binary stealth nozzle of claim 9, wherein: the circular and square section (11) is internally provided with a first cooling channel which runs through two ends, the convergence section (12) is internally provided with a second cooling channel which runs through two ends, the expansion section (13) is internally provided with a third cooling channel which runs through two ends, and the first cooling channel, the second cooling channel and the third cooling channel are communicated with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684892.1A CN113217224B (en) | 2021-06-21 | 2021-06-21 | Spray tube adjusting sheet and heat shield integrated structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684892.1A CN113217224B (en) | 2021-06-21 | 2021-06-21 | Spray tube adjusting sheet and heat shield integrated structure |
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| CN113217224A true CN113217224A (en) | 2021-08-06 |
| CN113217224B CN113217224B (en) | 2022-10-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113623084A (en) * | 2021-10-13 | 2021-11-09 | 中国航发四川燃气涡轮研究院 | Efficient combined cooling structure suitable for exhaust system of binary vector spray pipe |
| CN113847161A (en) * | 2021-10-22 | 2021-12-28 | 中国航发沈阳发动机研究所 | Nozzle adjusting sheet structure |
| CN114151227A (en) * | 2021-10-20 | 2022-03-08 | 中国航发四川燃气涡轮研究院 | Heat shield structure for binary vector spray pipe |
| CN114687888A (en) * | 2022-04-14 | 2022-07-01 | 中国航发沈阳发动机研究所 | Binary vector spray pipe cooling structure |
| CN114856857A (en) * | 2022-05-12 | 2022-08-05 | 中国航发四川燃气涡轮研究院 | Integrated type round-square casing with multiple channels |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623084A (en) * | 2021-10-13 | 2021-11-09 | 中国航发四川燃气涡轮研究院 | Efficient combined cooling structure suitable for exhaust system of binary vector spray pipe |
| CN114151227A (en) * | 2021-10-20 | 2022-03-08 | 中国航发四川燃气涡轮研究院 | Heat shield structure for binary vector spray pipe |
| CN114151227B (en) * | 2021-10-20 | 2023-05-05 | 中国航发四川燃气涡轮研究院 | Heat shield structure for binary vector spray pipe |
| CN113847161A (en) * | 2021-10-22 | 2021-12-28 | 中国航发沈阳发动机研究所 | Nozzle adjusting sheet structure |
| CN113847161B (en) * | 2021-10-22 | 2023-04-07 | 中国航发沈阳发动机研究所 | Nozzle adjusting sheet structure |
| CN114687888A (en) * | 2022-04-14 | 2022-07-01 | 中国航发沈阳发动机研究所 | Binary vector spray pipe cooling structure |
| CN114687888B (en) * | 2022-04-14 | 2024-01-30 | 中国航发沈阳发动机研究所 | Binary vector spray pipe cooling structure |
| CN114856857A (en) * | 2022-05-12 | 2022-08-05 | 中国航发四川燃气涡轮研究院 | Integrated type round-square casing with multiple channels |
| CN114856857B (en) * | 2022-05-12 | 2023-06-13 | 中国航发四川燃气涡轮研究院 | Multi-channel integrated round-square casing |
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| CN113217224B (en) | 2022-10-28 |
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