CN114542191A - Double-spoke-plate turbine disc with high-bearing flow guide structure - Google Patents
Double-spoke-plate turbine disc with high-bearing flow guide structure Download PDFInfo
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- CN114542191A CN114542191A CN202210312855.2A CN202210312855A CN114542191A CN 114542191 A CN114542191 A CN 114542191A CN 202210312855 A CN202210312855 A CN 202210312855A CN 114542191 A CN114542191 A CN 114542191A
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- radials
- turbine
- connecting plate
- plate
- water conservancy
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000001816 cooling Methods 0.000 abstract description 32
- 239000000112 cooling gas Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000003672 processing method Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
- F01D5/085—Heating, heat-insulating or cooling means cooling fluid circulating inside the rotor
- F01D5/087—Heating, heat-insulating or cooling means cooling fluid circulating inside the rotor in the radial passages of the rotor disc
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a double-spoke plate turbine disc with a high-bearing flow guide structure, which comprises an upper flow guide connecting plate, a lower flow guide connecting plate, an upper spoke plate turbine disc and a lower spoke plate turbine disc, wherein the upper flow guide connecting plate and the lower flow guide connecting plate are both in an inclined design mode, a cold air groove is arranged between the upper flow guide connecting plate and the lower flow guide connecting plate, the upper spoke plate turbine disc and the lower spoke plate turbine disc are connected through the upper flow guide connecting plate and the lower flow guide connecting plate to form the double-spoke plate turbine disc, the cold air grooves are combined to form a cold air channel in the double-spoke plate turbine disc, the curvature radius range of the cold air channel is 84.1-156.4 mm, the cooling channel in the invention adopts a curve design, the utilization efficiency of cooling gas is further improved, the design can improve the utilization efficiency of the cold air while ensuring the force bearing effect of the turbine disc, meanwhile, the processing method is simple and is easy to realize in the cavity of the double-spoke plate turbine disc, the applicability is strong.
Description
Technical Field
The invention relates to the technical field of double-spoke-plate turbine disks, in particular to a double-spoke-plate turbine disk with a high-bearing flow guide structure.
Background
The double-spoke turbine disk is an advanced turbine disk structure design technology with light weight and high cooling efficiency, which is proposed for the design of a high-pressure turbine disk of a new generation of high thrust-weight ratio turbine engine under the American high performance turbine engine technology (IHPTET) plan.
The difference between the temperature before the turbine and the endurance temperature of the blade material of the modern aircraft engine is increased to more than 500K, although the temperature of the gas before the turbine cannot exceed the endurance value of the material, the introduction of the turbine cooling technology radically changes the situation, so that the cooling technology is crucial to the aircraft engine, although the material is limited, the performance of the turbine and the service life of the turbine blade can be improved by the advanced turbine cooling technology, and the convection cooling is one of the cooling modes which are widely adopted at present. The cooling air passes through a plurality of special channels in the blade, and is subjected to heat exchange with the inner wall surface of the blade through the convection, so that the temperature of the blade is reduced to achieve a cooling effect, and the cooling effect is 200-250 ℃.
Document CN2016/106014485B proposes a flow-guiding cooling structure for a dual-spoke-plate turbine disk cavity, in which front and rear spokes of the turbine disk form a cavity, and the front and rear spokes have flow-guiding sheets to guide airflow into a disk-rim cooling channel, and the spokes increase the convection area and improve the cooling efficiency.
Document US2000/6267553B1 proposes a double disk for use in a high-pressure compressor. The turbine disk can reduce the total mass of the turbine disk and improve the performance of an engine.
Document CN2014/104196572a proposes a double-web turbine disk with disk cavity flow guide ribs, wherein a plurality of flow guide ribs are arranged on front and rear webs of the double-web turbine disk, cooling air outlets are uniformly distributed along the circumferential direction of the disk edge, and cooling air enters a cooling air channel from the disk cavity.
Traditional turbine dish adopts to revolve in advance and reduces total temperature relatively, admits air through the high-order simultaneously and reduces the thermal transmission in dish edge, reduces vertical heat transfer, to two spoke board turbine dishes, in order to guarantee the bulk strength and the stability of rim plate, air conditioning can only adopt the structure that the center admits air. In the process of high-speed operation of the double-web turbine disc, due to the action of inertia force and centrifugal force, cooling gas is close to the edge of the disc and often fits the turbine disc, so that a straight channel type cooling channel in conventional design is easy to block an air inlet, the cooling efficiency is reduced, and the performance of an engine is reduced.
In the design of the double-spoke plate turbine disk, in order to improve the overall cooling capacity, the structural design of a large space is often adopted in the design of a disk cavity, so that the thickness of a front spoke plate and a rear spoke plate is far thinner than that of a conventional turbine disk, and the turbine disk is easy to deform axially due to thermal stress and centrifugal stress generated during high-speed rotation during work, so that the structural stability of the double-spoke plate turbine disk is the first requirement of design; meanwhile, due to the influence of factors such as centrifugal force, inertia force, wheel disc friction force and the like generated by high-speed rotation, the whole gas flow structure is considered in the design of the cooling structure so as to meet the requirement of improving the whole cooling efficiency.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a double-radial-plate turbine disc with a high-bearing flow guide structure.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the utility model provides a double spoke board turbine dish with high-load-bearing water conservancy diversion structure, includes water conservancy diversion connecting plate, lower water conservancy diversion connecting plate go up radials turbine dish and lower radials turbine dish, go up the water conservancy diversion connecting plate with the one end of water conservancy diversion connecting plate down respectively with go up radials turbine dish, the rim plate edge connection of radials turbine dish down, go up the water conservancy diversion connecting plate with the other end of water conservancy diversion connecting plate down respectively with go up radials turbine dish, the radials internal face connection of radials turbine dish down, go up the water conservancy diversion connecting plate with the water conservancy diversion connecting plate all adopts the tilting design down, go up the water conservancy diversion connecting plate with the radius of curvature of water conservancy diversion connecting plate is 5mm down, go up the water conservancy diversion connecting plate with all be provided with the cold gas groove down between the water conservancy diversion connecting plate, go up radials turbine dish with the radials turbine dish passes through go up the water conservancy diversion connecting plate with water conservancy diversion connecting plate connects down and forms double radials turbine dish, the combination of cold air groove forms cold air passageway in the double spoke board turbine dish, the radials internal face on going up radials turbine dish, the lower radials turbine dish combines to form the dish chamber in the double spoke board turbine dish, the dish chamber with cold air passageway intercommunication, cold air passageway radius of curvature range is at 84.1mm ~ 156.4 mm.
Preferably, go up the water conservancy diversion connecting plate with the radials internal face junction of going up radials turbine disc is anticlockwise arrangement, down the water conservancy diversion connecting plate with the radials internal face junction of radials turbine disc is clockwise arrangement down.
Preferably, last radials turbine disk and radials turbine disk size down the same, the radius is 1200mm, last radials turbine disk and radials turbine disk down all are provided with the heart of a plate, just go up radials turbine disk and radials turbine disk's centre coincidence down.
Preferably, the cold air groove distributes with circular array the radials internal face edge of going up radials turbine disc, radials turbine disc down, quantity is 23, and is adjacent the cold air groove corresponds the center contained angle of dish heart is 15.65.
Preferably, the lengths of the upper flow guide connecting plate and the lower flow guide connecting plate are both 40 mm.
Preferably, the diameter of the passage opening of the cold air passage is 6 mm.
The invention has the beneficial effects that:
1. according to the invention, the guide connecting plate is fixedly arranged between the upper radial plate turbine disc and the lower radial plate turbine disc, so that the bearing capacity and the stability of the turbine disc are improved while the turbine disc adopts a double radial plate turbine disc structure, the stress concentration phenomenon of the turbine disc is improved, meanwhile, the contact area of cooling air in the disc cavity is increased by the guide connecting plate, the utilization rate of cooling gas is improved, the guide connecting plate adopts an inclined design, the contact surface of the disc cavity and a cooling air channel is smoother, and tangential cooling air generated by high-speed rotation enters the cooling channel with low loss.
2. The cooling channel in the invention adopts a curve design, the utilization efficiency of cooling gas is further improved, the design can improve the utilization efficiency of cold air while ensuring the bearing effect of the turbine disc, and meanwhile, the processing method is simple, easy to realize in the cavity of the double-radial-plate turbine disc and strong in applicability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a partial cross-sectional view of the present invention;
FIG. 2 is a full view of the upper web turbine disk of the present invention;
FIG. 3 is a full view of the lower web turbine disk of the present invention;
fig. 4 is a cross-sectional view of the overall structure of the present invention.
The attached drawings are marked as follows:
1-upper diversion connecting plate, 2-lower diversion connecting plate, 3-upper radial plate turbine disk, 4-lower radial plate turbine disk, 5-cold air channel and 6-disk core.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 4, in a preferred embodiment of the present invention, a double spoke plate turbine disk with a high load-bearing flow guide structure includes an upper flow guide connection plate 1, a lower flow guide connection plate 2, an upper spoke plate turbine disk 3 and a lower spoke plate turbine disk 4, one end of the upper flow guide connection plate 1 and one end of the lower flow guide connection plate 2 are respectively connected to the rim of the wheel disk of the upper spoke plate turbine disk 3 and the rim of the lower spoke plate turbine disk 4, the other end of the upper flow guide connection plate 1 and the other end of the lower flow guide connection plate 2 are respectively connected to the inner wall surfaces of the spoke plate of the upper spoke plate turbine disk 3 and the lower spoke plate turbine disk 4, the upper flow guide connection plate 1 and the lower flow guide connection plate 2 are respectively welded to the rim of the spoke plate turbine disk 3 and the lower spoke plate turbine disk 4 by diffusion welding, the rim of the inner wall surfaces of the spoke plate of the upper spoke plate turbine disk 3 and the lower spoke plate turbine disk 4 are fully supported by the upper flow guide connection plate 1 and the lower flow guide connection plate 2 except for a cold air channel 5, the upper diversion connecting plate 1 and the lower diversion connecting plate 2 both adopt an inclined design mode, the curvature radius of the upper diversion connecting plate 1 and the curvature radius of the lower diversion connecting plate 2 are 5mm, a cold air groove is arranged between the upper diversion connecting plate 1 and the lower diversion connecting plate 2, the upper radial plate turbine disk 3 and the lower radial plate turbine disk 4 are connected through the upper diversion connecting plate 1 and the lower diversion connecting plate 2 to form a double-radial plate turbine disk, the upper diversion connecting plate 1 and the lower diversion connecting plate 2 are also welded together, the cold air grooves are combined to form a cold air channel 5 in the double-spoke-plate turbine disc, the inner wall surfaces of the radial plates on the upper radial plate turbine disk 3 and the lower radial plate turbine disk 4 are combined to form a disk cavity in the double-radial plate turbine disk, the disc cavity is communicated with the cold air channel 5, and the curvature radius of the cold air channel 5 ranges from 84.1mm to 156.4 mm.
As a preferred embodiment of the present invention, it may also have the following additional technical features:
in this embodiment, go up water conservancy diversion connecting plate 1 with the radials internal face junction of going up radials turbine disc 3 is anticlockwise arrangement, water conservancy diversion connecting plate 2 with the radials internal face junction of radials turbine disc 4 is clockwise arrangement down.
In this embodiment, last radials turbine disk 3 and 4 sizes of radials turbine disk down are the same, and the radius is 1200mm, last radials turbine disk 3 and radials turbine disk 3 down all are provided with the heart of a disk 6, just go up radials turbine disk 3 and radials turbine disk 3's centre coincidence down.
In this embodiment, the cold air groove distributes with circular array the radials internal face edge of going up radials turbine disk 3, lower radials turbine disk 4, quantity is 23, and is adjacent the cold air groove corresponds the center contained angle of core 6 is 15.65.
In this embodiment, the lengths of the upper diversion connecting plate 1 and the lower diversion connecting plate 2 are both 40 mm.
In this embodiment, the diameter of the opening of the cold air channel 7 is 6 mm.
According to the invention, the upper guide connecting plate 1 and the lower guide connecting plate 2 are fixedly arranged between the upper spoke plate turbine disc 3 and the lower spoke plate turbine disc 4, so that the bearing capacity and the stability of the double spoke plate turbine disc are increased and the stress concentration phenomenon of the double spoke plate turbine disc is improved while the double spoke plate turbine disc structure is adopted, meanwhile, the contact area of cooling air in a disc cavity is increased by the upper guide connecting plate 1 and the lower guide connecting plate 2, the utilization rate of the cooling air is improved, the upper guide connecting plate 1 and the lower guide connecting plate 2 adopt an inclined design, the contact surface of the disc cavity and a cooling air channel is smoother, and tangential cooling air generated by high-speed rotation enters the cooling channel with low loss; the cooling channel 5 in the invention adopts a curve design, the utilization efficiency of cooling gas is further improved, the design can improve the utilization efficiency of cold air while ensuring the force bearing effect of the turbine disc, and meanwhile, the processing method is simple, is easy to realize in the cavity of the double-radial-plate turbine disc and has strong applicability.
The above additional technical features can be freely combined and used in addition by those skilled in the art without conflict.
The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (6)
1. A double-radial-plate turbine disc with a high-bearing flow guide structure is characterized in that: including go up water conservancy diversion connecting plate (1), water conservancy diversion connecting plate (2) go up radials turbine dish (3) and radials turbine dish (4) down, go up water conservancy diversion connecting plate (1) with down the one end of water conservancy diversion connecting plate (2) respectively with go up radials turbine dish (3), the rim plate edge connection of radials turbine dish (4) down, go up water conservancy diversion connecting plate (1) with down the other end of water conservancy diversion connecting plate (2) respectively with go up radials turbine dish (3), the radials internal face connection of radials turbine dish (4) down, go up water conservancy diversion connecting plate (1) with water conservancy diversion connecting plate (2) all adopt the tilting design down, go up water conservancy diversion connecting plate (1) with the radius of curvature of water conservancy diversion connecting plate (2) is 5mm down, go up water conservancy diversion connecting plate (1) with all be provided with the cold gas groove down between water conservancy diversion connecting plate (2), go up radials turbine dish (3) and radials turbine dish (4) passes through down go up water conservancy diversion connecting plate (1) and form double-spoke board turbine dish is connected in water conservancy diversion connecting plate (2) down, the cold gas groove combines to form cold air passageway (5) in the double-spoke board turbine dish, go up radials turbine dish (3), the radials internal face on the lower radials turbine dish (4) combines to form the dish chamber in the double-spoke board turbine dish, the dish chamber with cold air passageway (5) intercommunication, cold air passageway (5) radius of curvature scope is at 84.1mm ~ 156.4 mm.
2. A double-radial-plate turbine disc with a high load-bearing flow-guiding structure as claimed in claim 1, wherein: go up water conservancy diversion connecting plate (1) with the radials internal face junction of going up radials turbine disc (3) is anticlockwise arrangement, down water conservancy diversion connecting plate (2) with the radials internal face junction of radials turbine disc (4) is clockwise arrangement down.
3. A double-radial-plate turbine disc with a high load-bearing flow-guiding structure as claimed in claim 1, wherein: go up radials turbine disk (3) and radials turbine disk (4) size the same down, the radius is 1200mm, go up radials turbine disk (3) and radials turbine disk (3) down and all be provided with heart of a plate (6), just go up radials turbine disk (3) and the center coincidence of radials turbine disk (3) down.
4. A double-radial-plate turbine disc with a high load-bearing flow-guiding structure as claimed in claim 3, wherein: the cold air groove distributes with circular array go up the radials internal face edge of radials turbine disk (3), lower radials turbine disk (4), and quantity is 23, and is adjacent the cold air groove corresponds the center contained angle of dish heart (6) is 15.65.
5. A double-radial-plate turbine disc with a high load-bearing flow-guiding structure as claimed in claim 1, wherein: the lengths of the upper diversion connecting plate (1) and the lower diversion connecting plate (2) are both 40 mm.
6. A double-radial-plate turbine disc with a high load-bearing flow-guiding structure as claimed in claim 1, wherein: the diameter of the channel opening of the cold air channel (7) is 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210312855.2A CN114542191A (en) | 2022-03-28 | 2022-03-28 | Double-spoke-plate turbine disc with high-bearing flow guide structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210312855.2A CN114542191A (en) | 2022-03-28 | 2022-03-28 | Double-spoke-plate turbine disc with high-bearing flow guide structure |
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| CN114542191A true CN114542191A (en) | 2022-05-27 |
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| CN202210312855.2A Pending CN114542191A (en) | 2022-03-28 | 2022-03-28 | Double-spoke-plate turbine disc with high-bearing flow guide structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117722235A (en) * | 2024-02-18 | 2024-03-19 | 中国航发四川燃气涡轮研究院 | Double-radial-plate turbine disc |
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| GB578009A (en) * | 1941-11-21 | 1946-06-12 | Frank Bernard Halford | Improvements in or relating to turbines |
| US2976014A (en) * | 1952-01-19 | 1961-03-21 | Bbc Brown Boveri & Cie | Blading for use in axial flow machines |
| US4102603A (en) * | 1975-12-15 | 1978-07-25 | General Electric Company | Multiple section rotor disc |
| US5961287A (en) * | 1997-09-25 | 1999-10-05 | United Technologies Corporation | Twin-web rotor disk |
| CN106014485A (en) * | 2016-07-01 | 2016-10-12 | 中航空天发动机研究院有限公司 | Flow guide and cooling structure applied to double-wheel-disc turbine disk cavity |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117722235A (en) * | 2024-02-18 | 2024-03-19 | 中国航发四川燃气涡轮研究院 | Double-radial-plate turbine disc |
| CN117722235B (en) * | 2024-02-18 | 2024-05-17 | 中国航发四川燃气涡轮研究院 | Double-radial-plate turbine disc |
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Application publication date: 20220527 |