CN117404205A - S-bend pneumatic vector spray pipe with slit air film cooling structure - Google Patents
S-bend pneumatic vector spray pipe with slit air film cooling structure Download PDFInfo
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- CN117404205A CN117404205A CN202311458089.1A CN202311458089A CN117404205A CN 117404205 A CN117404205 A CN 117404205A CN 202311458089 A CN202311458089 A CN 202311458089A CN 117404205 A CN117404205 A CN 117404205A
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- 238000001816 cooling Methods 0.000 title claims abstract description 75
- 239000007921 spray Substances 0.000 title claims abstract description 52
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000002737 fuel gas Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 6
- 230000005855 radiation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004401 flow injection analysis Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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; Infrared radiation suppressors
-
- 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
-
- 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
- F02K1/78—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; Infrared radiation suppressors
- F02K1/825—Infrared radiation suppressors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The invention relates to an S-bend pneumatic vector spray pipe with a slit air film cooling structure, belonging to the field of aeroengines; the device comprises an S-shaped convergence section and a binary expansion section which are axially and sequentially arranged, wherein a secondary flow pneumatic vector structure with a slit air film cooling structure is arranged on at least one part of the peripheral surface of the binary expansion section, high-pressure cold air is split by the secondary flow pneumatic vector structure and then is introduced into a spray pipe, and a part of split cold air is injected into a main flow in the spray pipe from a pneumatic vector outlet, so that deflection force for changing the angle of the main flow can be generated; and the other part of split cold air flows out from a slit air film cooling outlet positioned at the upstream of the air vector outlet, and cools the wall surface at the upstream of the air vector outlet. The secondary flow pneumatic vector structure with the slit air film cooling structure is arranged at the expansion section of the spray pipe to control the deflection of the main flow and solve the problem that high-temperature fuel gas is eroded on the wall surface of the spray pipe caused by pneumatic vector jet flow.
Description
Technical Field
The invention belongs to the field of aeroengines, and particularly relates to an S-bend pneumatic vector spray pipe with a slit air film cooling structure.
Background
The S-bend nozzle can effectively reduce infrared signals and radar signals of the aircraft, so that the S-bend nozzle can be used for the aircraft for performing tasks. It is worth noting that the thrust vector technology is used for improving the agility, overspeed maneuver, short-distance take-off and landing performances of the fighter plane, and can partially or completely replace the pneumatic control plane to carry out flight control, so that the thrust vector technology is one of the essential key technologies of the plane for executing tasks. The fixed geometry pneumatic vectoring nozzle is an exhaust system scheme which is attractive at present because the fixed geometry pneumatic vectoring nozzle has simpler structure, lighter weight and quicker response than the conventional mechanical thrust vectoring nozzle. The new generation of aircrafts for performing tasks should have both stealth and aerodynamic vector performances, so that the S-bend aerodynamic vector nozzle becomes a research hot spot.
Application of the aerodynamic vectoring technique to a double-duct S-bend nozzle results in high temperature combustion gas flow from the inner duct to the vicinity of the wall and erosion of the nozzle wall upstream of the aerodynamic vectoring outlet. Shi Jingwei the paper "shock vectoring nozzle secondary flow jet morphology impact studies" shows that for supersonic main flow, the injection of secondary flow is a strong source of turbulence, such that bow induced shock waves are formed in the main flow, which induced shock waves cause flow separation in the near wall region and cause high temperature combustion gas flow of the inner duct to the vicinity of the wall. The problem of deformation is easy to occur when the wall surface of the spray pipe is flushed by high-temperature fuel gas, and the high-temperature spray pipe wall surface and high-temperature tail spray gas are easy to generate larger infrared radiation, so that the stealth performance of the S-bend spray pipe is affected. Therefore, effective cooling measures for the S-bend pneumatic vectoring nozzle are required.
Disclosure of Invention
The technical problems to be solved are as follows:
in order to avoid the defects of the prior art, the invention provides the S-bend pneumatic vector spray pipe with the slit air film cooling structure, and the secondary flow pneumatic vector structure with the slit air film cooling structure is arranged at the expansion section of the spray pipe so as to control the deflection of a main flow and solve the problem that high-temperature fuel gas is eroded on the wall surface of the spray pipe caused by pneumatic vector jet flow.
The technical scheme of the invention is as follows: the S-bend pneumatic vector spray pipe with the slit air film cooling structure comprises an S-bend convergence section and a binary expansion section which are axially and sequentially arranged, wherein a secondary flow pneumatic vector structure with the slit air film cooling structure is arranged on at least one position on the peripheral surface of the binary expansion section, high-pressure cold air is split through the secondary flow pneumatic vector structure and then is introduced into the spray pipe, and a part of split cold air is injected into a main flow in the spray pipe from a pneumatic vector outlet, so that deflection force for changing the angle of the main flow can be generated; and the other part of split cold air flows out from a slit air film cooling outlet positioned at the upstream of the air vector outlet, and cools the wall surface at the upstream of the air vector outlet.
The invention further adopts the technical scheme that: the secondary flow pneumatic vector structure with the slit air film cooling structure is a cold air channel positioned on the wall surface of the expansion section, and a secondary flow inlet of the secondary flow pneumatic vector structure faces to the outside of the wall surface and is used for introducing high-pressure cold air; the outlet comprises a pneumatic vector outlet and a slit air film cooling outlet which are arranged on the wall surface of the expansion section, and two air flows which are split by the cold air channel are respectively led into the expansion section through the two outlets.
The invention further adopts the technical scheme that: the cold air channel is a pipeline attached to the outer wall surface of the expansion section, and cold air of the main channel in the pipeline is mixed with the main flow in the spray pipe sequentially through the secondary flow inlet, the secondary flow pipeline and the pneumatic vector outlet; and a bypass is arranged on the secondary flow pipeline, the bypass is an adherence pipeline positioned at the upstream of the secondary flow pipeline and communicated with the slit air film cooling outlet, and cold air shunted by the bypass flows into the inner wall surface of the expansion section at the upstream of the pneumatic vector outlet through the secondary flow inlet, the secondary flow pipeline, the adherence pipeline and the slit air film cooling outlet in sequence.
The invention further adopts the technical scheme that: the jetting direction of the cold air of the main channel in the pipeline is perpendicular to the axial direction of the expansion section.
The invention further adopts the technical scheme that: the jet angle of the cold air which is bypassed is 50-130 degrees.
The invention further adopts the technical scheme that: the ratio of the area of the secondary flow inlet to the area of the outlet of the convergent section of the S-bend spray pipe is 0.05-0.12.
The invention further adopts the technical scheme that: the ratio of the area of the pneumatic vector outlet to the area of the secondary flow inlet is 0.5-1.5.
The invention further adopts the technical scheme that: the ratio of the area of the slit air film cooling outlet to the area of the pneumatic vector outlet is 0.05-0.5.
The invention further adopts the technical scheme that: the distance between the pneumatic vector outlet and the slit air film cooling outlet is 5-10 times of the width of the secondary flow pipeline along the flow direction.
The invention further adopts the technical scheme that: the upper and lower wall surfaces of the binary expansion section are symmetrically provided with two secondary flow pneumatic vector structures with slit air film cooling structures, and the secondary flow pneumatic vector structures are used for controlling the upper and lower deflection of the main flow of the spray pipe.
Advantageous effects
The invention has the beneficial effects that: the invention provides an S-bend pneumatic vector spray pipe with a slit air film cooling structure, which consists of an S-bend convergence section, a binary expansion section and a secondary flow pneumatic vector structure with a slit air film cooling structure. The high-pressure cold air flows into a secondary flow pneumatic vector structure with a slit air film cooling structure through a secondary flow inlet, and most of the cold air flows out through a pneumatic vector outlet, so that the up-and-down deflection of a main flow is controlled; meanwhile, the problem that high-temperature fuel gas erodes the wall surface of the jet pipe caused by pneumatic vector jet flow is solved by adopting a flow dividing design.
Preferably, the ratio of the area of the secondary flow inlet to the area of the outlet of the convergent section of the S-bend spray pipe is controlled to be 0.05-0.12, if the area of the secondary flow outlet is too small, the flow of the outgoing cold air is also small, and the deflection angle of the main flow is too small, but if the area of the secondary flow outlet is too large, the requirement for the air supply of the secondary flow is increased, so that the operation of the aeroengine is not facilitated.
Preferably, the ratio of the area of the slit film cooling outlet to the area of the air vector outlet is 0.05-0.5, and the flow rate flowing through the adherence pipeline is controlled by changing the area of the slit film cooling outlet, so that a small part of cold air flows into the adherence pipeline (the pressure of secondary air flow is adjusted along with the total inlet pressure of the main flow of the spray pipe, and the cooling air flow can flow out from the air vector outlet and the slit film cooling outlet as long as the pressure of the secondary flow is more than or equal to the total inlet pressure of the spray pipe as long as the pressure of the secondary flow is ensured to be in the acceleration and depressurization process when the main flow flows to the secondary flow air vector structure with the slit film cooling structure; when the cold air flows in the adherence pipeline, the cold air exchanges heat with the surface of the outer wall of the spray pipe in a face-to-face manner, and the surface of the outer wall of the spray pipe is cooled; the cold air flowing through the adherence pipeline flows out through the slit air film cooling outlet and covers the inner wall surface at the upstream of the pneumatic vector outlet, thereby reducing the temperature of the inner wall surface of the spray pipe.
Preferably, the distance between the pneumatic vector outlet and the slit film cooling outlet is ensured to be 5-10 times of the width of the secondary flow pipeline along the flow direction, and the distance is also a wall area which is easy to generate gas erosion. The invention uses the air film cooling in the technical field of pneumatic vector for the first time, reduces the temperature and infrared radiation of the spray pipe wall surface on the basis of meeting the thrust vector characteristic of the S-bend spray pipe, and solves the problem that the high-temperature fuel gas erodes the spray pipe wall surface caused by pneumatic vector jet flow.
Drawings
FIG. 1 is a schematic diagram of an S-bend pneumatic vectoring nozzle with a slit film cooling structure according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of a secondary flow air vector structure of a slotted film cooling structure;
reference numerals illustrate: 1. s-bend convergence section; 11. an air inlet; 2. a binary expansion section; 21. an exhaust port; 3. a secondary flow pneumatic vector structure with a slit air film cooling structure; 31. a secondary flow inlet; 32. a secondary flow conduit; 33. an adherent pipe; 34. a pneumatic vector outlet; 35. slit air film cooling outlet.
Detailed Description
The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The invention provides an S-bend pneumatic vector spray pipe with a slit air film cooling structure, which is based on the problems that the wall surface of the spray pipe is easy to generate deformation when being flushed by high-temperature fuel gas, and the wall surface of the spray pipe and the high-temperature tail spray gas are easy to generate larger infrared radiation and influence the stealth performance of the S-bend spray pipe, and comprises an S-bend convergence section and a binary expansion section which are axially and sequentially arranged, wherein at least one part of the peripheral surface of the binary expansion section is provided with a secondary flow pneumatic vector structure with the slit air film cooling structure, the secondary flow pneumatic vector structure is used for shunting high-pressure cold gas and then introducing the high-pressure cold gas into the spray pipe, and part of the split cold gas is injected into a main flow in the spray pipe from a pneumatic vector outlet, so that the deflection force for changing the main flow angle can be generated; and the other part of split cold air flows out from a slit air film cooling outlet positioned at the upstream of the air vector outlet, and cools the wall surface at the upstream of the air vector outlet.
Specifically, the secondary flow pneumatic vector structure of the slit air film cooling structure is an air conditioning channel positioned on the wall surface of the expansion section, and a secondary flow inlet of the secondary flow pneumatic vector structure faces to the outside of the wall surface and is used for introducing high-pressure air conditioning; the outlet comprises a pneumatic vector outlet and a slit air film cooling outlet which are arranged on the wall surface of the expansion section, and two air flows which are split by the cold air channel are respectively led into the expansion section through the two outlets.
Specifically, the cold air channel is a pipeline attached to the outer wall surface of the expansion section, and cold air of the main channel in the pipeline is mixed with the main flow in the spray pipe sequentially through the secondary flow inlet, the secondary flow pipeline and the pneumatic vector outlet; and a bypass is arranged on the secondary flow pipeline, the bypass is an adherence pipeline positioned at the upstream of the secondary flow pipeline and communicated with the slit air film cooling outlet, and cold air shunted by the bypass flows into the inner wall surface of the expansion section at the upstream of the pneumatic vector outlet through the secondary flow inlet, the secondary flow pipeline, the adherence pipeline and the slit air film cooling outlet in sequence.
The high-pressure cold air flows into a secondary flow pneumatic vector structure with a slit air film cooling structure through a secondary flow inlet, and most of the cold air flows out through a pneumatic vector outlet, so that the up-and-down deflection of a main flow is controlled; meanwhile, the problem that high-temperature fuel gas erodes the wall surface of the jet pipe caused by pneumatic vector jet flow is solved by adopting a flow dividing design.
The technical scheme is further described below with reference to the accompanying drawings:
in this embodiment, an S-bend pneumatic vector nozzle embodiment with a slit film cooling structure is described by taking an S-bend pneumatic vector nozzle as an example, and the slit film cooling method can be used for cooling design except for the S-bend pneumatic vector nozzle, the binary pneumatic vector nozzle, the axisymmetric pneumatic vector nozzle and the like, which are not described herein.
Referring to fig. 1, the S-bend pneumatic vectoring nozzle of the present embodiment includes an S-bend convergent section 1 having a cross-sectional shape transiting from circular to rectangular and a binary divergent section 2 having a cross-sectional shape of full rectangle, a first end of the S-bend convergent section 1 has an air inlet 11 connected with a high temperature turbine outlet of an engine, and the present embodiment is mainly applied to a turbofan engine, and the air inlet 11 is divided into a high temperature inclusion inlet and a low temperature inclusion inlet. The low-temperature air flow in the outer duct can well cover the wall surface of the spraying pipe, and the high-temperature air flow in the outer duct is prevented from ablating the wall surface of the spraying pipe. The second end of the binary expansion section 2 is an exhaust port 21, and the second end of the S-bend convergence section 1 is connected with the first end of the binary expansion section 2 in a head-tail mode.
Referring to fig. 2, a partial enlarged view of a secondary flow air vector structure 3 with slit film cooling structure is shown, and the secondary flow air vector structure 3 with slit film cooling structure is composed of a secondary flow inlet 31, a secondary flow pipe 32, an adherence pipe 33, an air vector outlet 34 and a slit film cooling outlet 35, and is arranged on the upper wall surface or the lower wall surface of the binary expansion section 2. The secondary flow pipeline 32 and the wall-attached pipeline 33 are rectangular pipelines, the reference injection angle of the secondary flow pipeline 32 is 90 degrees, namely the included angle between the cross section of the secondary flow pipeline and the cross section of the spray pipe, and the secondary flow injection angle is selected from 50 degrees to 130 degrees. The wall-attached pipe 33 is parallel to the wall surface of the nozzle pipe, and the secondary flow pipe 32 communicates with the wall-attached pipe 33. The aerodynamic vector outlet 34 is located downstream of the slit film cooling outlet 35; the high-pressure cold air flows into the secondary flow jet structure 3 with the slit air film cooling structure through the secondary inlet 31, and most of the cold air flows out through the pneumatic vector outlet 34, so that the up-and-down deflection of the main flow is controlled; a small part of cold air flows into the adherence pipeline 33 and flows out through the slit air film cooling outlet 35 to cool the wall surface at the upstream of the pneumatic vector outlet 34, thereby solving the problem that high-temperature fuel gas is eroded on the wall surface of the jet pipe caused by pneumatic vector jet flow.
Specifically, the ratio of the area of the secondary inlet 31 to the area of the outlet of the convergent section 1 of the S-bend spray pipe is 0.05-0.12; the ratio of the area of the pneumatic vector outlet 34 to the area of the secondary inlet 31 is 0.5-1.5; the ratio of the area of the slit air film cooling outlet 35 to the area of the pneumatic vector outlet 34 is 0.05-0.5; the distance between the air vector outlet 34 and the slit film cooling outlet 35 is 5-10 times the width of the secondary flow duct 32 in the flow direction.
The high-pressure cold air in the embodiment flows into the secondary flow pneumatic vector structure 3 with the slit air film cooling structure through the secondary inlet 31, and most of the cold air flows out through the pneumatic vector outlet 34, so that the up-and-down deflection of the main flow is controlled; a small part of the cold air flows into the adherence pipeline 33, and when the cold air flows in the adherence pipeline, the cold air exchanges heat with the surface of the outer wall of the spray pipe in a face-to-face manner to cool the surface of the outer wall of the spray pipe; the cold air flowing through the adherence pipeline 33 flows out through the slit air film cooling outlet 35 and covers the inner wall surface at the upstream of the air vector outlet 34, thereby reducing the temperature of the inner wall surface of the spray pipe, reducing the infrared radiation of the S-bend air vector spray pipe and solving the problem that the high-temperature fuel gas erodes the wall surface of the spray pipe caused by air vector jet flow.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.
Claims (10)
1. S-bend pneumatic vector spray pipe with slit air film cooling structure comprises an S-bend convergence section and a binary expansion section which are axially and sequentially arranged, and is characterized in that: the secondary flow pneumatic vector structure with the slit air film cooling structure is arranged on at least one part of the peripheral surface of the binary expansion section, high-pressure cold air is split by the secondary flow pneumatic vector structure and then is introduced into the spray pipe, and part of split cold air is injected into the main flow in the spray pipe from the pneumatic vector outlet, so that deflection force for changing the angle of the main flow can be generated; and the other part of split cold air flows out from a slit air film cooling outlet positioned at the upstream of the air vector outlet, and cools the wall surface at the upstream of the air vector outlet.
2. The S-bend air vector nozzle with slit film cooling structure of claim 1, wherein: the secondary flow pneumatic vector structure with the slit air film cooling structure is a cold air channel positioned on the wall surface of the expansion section, and a secondary flow inlet of the secondary flow pneumatic vector structure faces to the outside of the wall surface and is used for introducing high-pressure cold air; the outlet comprises a pneumatic vector outlet and a slit air film cooling outlet which are arranged on the wall surface of the expansion section, and two air flows which are split by the cold air channel are respectively led into the expansion section through the two outlets.
3. The S-bend air vector nozzle with slit film cooling structure of claim 2, wherein: the cold air channel is a pipeline attached to the outer wall surface of the expansion section, and cold air of the main channel in the pipeline is mixed with the main flow in the spray pipe sequentially through the secondary flow inlet, the secondary flow pipeline and the pneumatic vector outlet; and a bypass is arranged on the secondary flow pipeline, the bypass is an adherence pipeline positioned at the upstream of the secondary flow pipeline and communicated with the slit air film cooling outlet, and cold air shunted by the bypass flows into the inner wall surface of the expansion section at the upstream of the pneumatic vector outlet through the secondary flow inlet, the secondary flow pipeline, the adherence pipeline and the slit air film cooling outlet in sequence.
4. An S-bend air vector nozzle with slit film cooling structure according to claim 3, wherein: the jetting direction of the cold air of the main channel in the pipeline is perpendicular to the axial direction of the expansion section.
5. The S-bend air vector nozzle with slit film cooling structure of claim 4, wherein: the jet angle of the cold air which is bypassed is 50-130 degrees.
6. An S-bend pneumatic vector nozzle with slit film cooling structure according to any one of claims 1-5, wherein: the ratio of the area of the secondary flow inlet to the area of the outlet of the convergent section of the S-bend spray pipe is 0.05-0.12.
7. The S-bend air vector nozzle with slit film cooling structure of claim 6, wherein: the ratio of the area of the pneumatic vector outlet to the area of the secondary flow inlet is 0.5-1.5.
8. The S-bend air vector nozzle with slit film cooling structure of claim 7, wherein: the ratio of the area of the slit air film cooling outlet to the area of the pneumatic vector outlet is 0.05-0.5.
9. The S-bend air vector nozzle with slit film cooling structure of claim 8, wherein: the distance between the pneumatic vector outlet and the slit air film cooling outlet is 5-10 times of the width of the secondary flow pipeline along the flow direction.
10. The S-bend air vector nozzle with slit film cooling structure of claim 9, wherein: the upper and lower wall surfaces of the binary expansion section are symmetrically provided with two secondary flow pneumatic vector structures with slit air film cooling structures, and the secondary flow pneumatic vector structures are used for controlling the upper and lower deflection of the main flow of the spray pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311458089.1A CN117404205A (en) | 2023-11-04 | 2023-11-04 | S-bend pneumatic vector spray pipe with slit air film cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311458089.1A CN117404205A (en) | 2023-11-04 | 2023-11-04 | S-bend pneumatic vector spray pipe with slit air film cooling structure |
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| Publication Number | Publication Date |
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| CN117404205A true CN117404205A (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311458089.1A Pending CN117404205A (en) | 2023-11-04 | 2023-11-04 | S-bend pneumatic vector spray pipe with slit air film cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117404205A (en) |
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2023
- 2023-11-04 CN CN202311458089.1A patent/CN117404205A/en active Pending
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