CN114109519A - Guide blade based on metal base band ceramic mosaic block - Google Patents
Guide blade based on metal base band ceramic mosaic block Download PDFInfo
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- CN114109519A CN114109519A CN202210107226.6A CN202210107226A CN114109519A CN 114109519 A CN114109519 A CN 114109519A CN 202210107226 A CN202210107226 A CN 202210107226A CN 114109519 A CN114109519 A CN 114109519A
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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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
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- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The guide blade comprises an upper edge plate, a lower edge plate and a combined blade body, wherein the combined blade body comprises a metal base blade and a ceramic mosaic block, the ceramic mosaic block and the metal base blade are the same in length and are arranged side by side, and a mosaic structure which enables the ceramic mosaic block and the metal base blade to be mutually positioned and closed is arranged between the ceramic mosaic block and the metal base blade; the ceramic mosaic blocks are arranged at the front edge of the blade in a mosaic mode, the ceramic matrix composite has good high-temperature resistance, the front cavity of the blade is cooled by less cold air to meet the use requirement of the blade, and meanwhile, the ceramic mosaic blocks are only arranged at the key parts of the blade, so that the processing and manufacturing difficulty of the ceramic matrix complex structure is greatly reduced, and the problems that the metal-based material guide blade is insufficient in temperature bearing capacity, the ceramic matrix composite blade is large in processing difficulty and the processing technology is immature are solved.
Description
Technical Field
The application belongs to the field of turbine guide blades of aircraft engines, and particularly relates to a guide blade based on a metal base band ceramic mosaic block.
Background
The turbine guide blade of the aircraft engine is a part with the highest heat load on the engine, the temperature in front of the turbine is higher and higher along with the continuous improvement of the service performance requirement of the engine, and the turbine blade is often damaged by ablation, cracks and the like under the severe working environment. In order to prolong the service life of the blade, the cooling technology of the blade is more and more complex, and the temperature resistance of the blade using materials is also continuously improved.
Because the gas temperature on the outer surface of the turbine guide vane is very high and the heat exchange is severe, a more complex cooling design technology is often required to be adopted for key areas in the cooling design to strengthen the cooling, for example, the leading edge area of the vane is cooled by adopting an impact, convection and air film cooling mode, as shown in fig. 1; the common cooling structures in the high-temperature region of the leading edge mainly include an impingement + film cooling structure, a laminate cooling structure, and the like, such as a leading edge composite cooling structure in fig. 2 and a leading edge laminate cooling structure in fig. 3. The temperature-resistant material of the blade gradually develops from an isometric crystal material to a single crystal and ceramic matrix composite material, the single crystal material cooling blade is widely applied to engineering at present, and the ceramic matrix composite material with higher temperature resistance is still in a research stage due to the great technical difficulty in preparing the blade.
The complex cooling design and development of expensive high temperature resistant materials, as well as the high difficulty of manufacturing process, greatly increase the development cost and increase the development cycle time. For the metal-based material blade, in order to improve the temperature bearing capacity of the blade, on one hand, the amount of cold air can be increased, and the cooling of a high-temperature area is strengthened, but the improvement of the overall performance of an engine is not facilitated, and on the other hand, a more complex cooling structure is designed, so that the design and processing difficulty is increased, and the cost is improved; the high-temperature material of the blade is developed into third-generation and fourth-generation single crystal materials at present, but the temperature resistance is improved slowly, and researchers have strengthened the research and development on the ceramic matrix composite material with obviously improved temperature resistance in recent years, but the preparation difficulty of the ceramic matrix complex structure is very high, the machinability is poor, and the whole processing and manufacturing are very difficult to realize especially for parts with complex shapes such as turbine cooling blades; in addition, the ceramic material has the characteristics of high melting point, poor flow plasticity, non-conducting property, easy dissolution of part of the ceramic material at high temperature and the like, so that the ceramic material is more difficult to weld, and the process needs a longer time for exploration and attack, thereby undoubtedly greatly improving the production cost and reducing the production efficiency.
Therefore, how to use ceramic materials on the guide vane to improve temperature resistance is a problem to be solved.
Disclosure of Invention
The application aims to provide a guide vane based on a metal base band ceramic mosaic block, so as to solve the problem that ceramic materials are difficult to use on the guide vane in the prior art.
The technical scheme of the application is as follows: the utility model provides a guide blade based on metal base band ceramic mosaic piece, includes top flange, lower flange and combination blade body, be equipped with connection structure between combination blade body and top flange, the lower flange, the combination blade body includes metal matrix blade and ceramic mosaic piece, ceramic mosaic piece and metal matrix blade's length is the same and both set up side by side, be equipped with between ceramic mosaic piece and the metal matrix blade and make mutual location and confined mosaic structure between them, the leading edge of blade is located to ceramic mosaic piece.
Preferably, the mosaic structure comprises a middle embedded groove arranged in the middle of the edge of the side wall of the ceramic mosaic block and a middle mosaic block arranged in the middle of the edge of the side wall of the metal base blade, and the middle mosaic block is inserted into the middle embedded groove.
Preferably, mosaic structure locates the inboard boss in metal base blade lateral wall edge inboard including the outside boss of locating ceramic mosaic piece lateral wall edge outside, ceramic mosaic piece's lateral wall inner wall and metal base blade lateral wall outside are equipped with the caulking groove, the outside boss inserts to the caulking groove on the metal base blade in, inboard boss inserts to ceramic mosaic piece's caulking groove in, the outside boss pastes with the lateral wall of inboard boss mutually.
Preferably, the mosaic structure comprises a fixed block arranged on the inner wall of the metal base blade, and the ceramic mosaic block is attached to the outer wall of the fixed block.
Preferably, connection structure is including locating the protruding tang at combination blade body upper and lower both ends, locating the concave tang on top flange and the lower flange, protruding tang and concave tang mutually support.
The guide blade based on the metal base band ceramic mosaic block comprises an upper edge plate, a lower edge plate and a combined blade body, wherein the combined blade body comprises a metal base blade and a ceramic mosaic block, the ceramic mosaic block and the metal base blade are the same in length and are arranged side by side, and a mosaic structure which enables the ceramic mosaic block and the metal base blade to be mutually positioned and closed is arranged between the ceramic mosaic block and the metal base blade; the ceramic mosaic blocks are arranged at the front edge of the blade in a mosaic mode, the ceramic matrix composite has good high-temperature resistance, the front cavity of the blade is cooled by less cold air to meet the use requirement of the blade, and meanwhile, the ceramic mosaic blocks are only arranged at the key parts of the blade, so that the processing and manufacturing difficulty of the ceramic matrix complex structure is greatly reduced, and the problems that the metal-based material guide blade is insufficient in temperature bearing capacity, the ceramic matrix composite blade is large in processing difficulty and the processing technology is immature are solved.
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 representation of a typical prior art turbine guide vane;
FIG. 2 is a schematic diagram of a prior art leading edge composite cooling structure;
FIG. 3 is a schematic view of a prior art leading edge laminate cooling configuration;
FIG. 4 is a schematic partial cross-sectional view of a guide vane according to the present application;
FIG. 5 is a schematic view of a damascene structure with a middle damascene block according to the present application;
FIG. 6 is a schematic view of the present application illustrating an inlay configuration using outer and inner bosses;
FIG. 7 is a schematic diagram of a damascene structure using a fixed block.
1. An upper edge plate; 2. a lower flange plate; 3. a ceramic mosaic block; 4. a metal base blade; 5. a middle insert block; 6. an outer boss; 7. an inner boss; 8. a fixed block; 9. and (4) a convex spigot.
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.
A guide vane based on a metal base band ceramic mosaic block is shown in figure 4 and comprises an upper edge plate 1, a lower edge plate 2 and a combined vane body. Go up the frid 1 and locate the upper end of combination blade body, the lower extreme of combination blade body is located to lower frid 2, combination blade body and last frid 1, be equipped with connection structure between the lower frid 2, the combination blade body includes metal matrix blade 4 and ceramic mosaic piece 3, metal matrix blade 4 and ceramic mosaic piece 3 set up side by side and length between them is the same, it is also that the both sides of blade body are located respectively to metal matrix blade 4 and ceramic mosaic piece 3, ceramic mosaic piece 3 and metal matrix blade 4 enclose into the annular structure, and form cooling channel between the two, the leading edge of blade body is located to ceramic mosaic piece 3, the middle part and the trailing edge of blade body are located to metal matrix blade 4, and metal matrix blade 4 and last frid 1 and lower frid 2 fixed connection.
The ceramic mosaic block 3 is inlaid at one side of the metal base blade 4, and a mosaic structure which enables the ceramic mosaic block 3 and the metal base blade 4 to be mutually positioned and closed is arranged between the two.
The metal base blade 4 in the combined blade body is a conventional blade part; the upper end and the lower end of the metal base blade 4 are connected with the upper edge plate 1 and the lower edge plate 2 in a welding mode, so that the connection reliability and tightness are guaranteed. Realize the location and spacing of upper flange plate 1 and lower flange plate 2 to the combination blade body through setting up connection structure, guarantee sealed and location between metal matrix blade 4 and the ceramic mosaic piece 3 through setting up mosaic structure, guarantee that metal matrix blade 4 can smooth transition with ceramic mosaic piece 3's surface.
The ceramic mosaic block 3 is arranged at the front edge of the blade in a mosaic mode, the ceramic matrix composite has good high temperature resistance, the front cavity of the blade can be cooled by less cold air to meet the use requirement of the blade, a large amount of cold air is saved compared with a metal-based material blade, the complex cooling structure design work is saved, the ceramic matrix blade can provide larger temperature bearing capacity when high-temperature gas passes through the combined blade body, meanwhile, the ceramic mosaic block 3 is only arranged at the key part of the blade, thus greatly reducing the processing and manufacturing difficulty of the ceramic-based complex structure, solving the problems of insufficient temperature bearing capacity of the metal-based material guide blade, large processing difficulty of the ceramic-based composite material blade and immature processing technology, meanwhile, the cold air consumption of the blade can be reduced, the temperature bearing capacity of the blade (such as the front edge and other areas) is enhanced, and the problems of high cooling design difficulty and high manufacturing cost of the blade are solved.
During the combination, assemble ceramic mosaic block 3 and metal matrix blade 4 earlier, after the assembly is accomplished, then fasten the combination blade body and insert lower flange 2 with the help of dedicated frock, insert the blade body with upper flange 1 at last.
The mosaic structure of the ceramic mosaic block 3 and the metal base blade 4 can be various, and specifically comprises the following structures:
as shown in fig. 5, the mosaic structure preferably comprises a middle caulking groove arranged at the middle position of the side wall edge of the ceramic mosaic block 3 and a middle mosaic block 5 arranged at the middle position of the side wall edge of the metal base blade 4, wherein the middle mosaic block 5 is inserted into the middle caulking groove. The middle embedded block 5 is inserted into the middle embedded groove to realize the positioning and sealing between the ceramic embedded block 3 and the metal base blade 4, and the connection stability is ensured.
As shown in fig. 6, preferably, the damascene structure includes an outer side boss 6 disposed on the outer side of the side wall edge of the ceramic mosaic block 3, and an inner side boss 7 disposed on the inner side of the side wall edge of the metal base blade 4, where the inner wall of the side wall of the ceramic mosaic block 3 and the outer side of the side wall of the metal base blade 4 are provided with caulking grooves, the outer side boss 6 is inserted into the caulking groove on the metal base blade 4, the inner side boss 7 is inserted into the caulking groove of the ceramic mosaic block 3, and the outer side boss 6 is attached to the side wall of the inner side boss 7. The sealing and positioning accuracy between the ceramic mosaic block 3 and the metal base blade 4 is ensured by inserting the outer side boss 6 and the inner side boss 7 into different caulking grooves in different directions.
As shown in fig. 7, the mosaic structure preferably comprises a fixed block 8 arranged on the inner wall of the metal base blade 4, and the ceramic mosaic block 3 is attached to the outer wall of the fixed block 8. When assembling, the assembly can be completed only by tightly attaching the inner wall of the ceramic mosaic block 3 to the fixed block 8, the positioning is convenient, and the sealing effect is good.
In the actual use process, different mosaic structure forms can be adopted according to the wall thickness of the blade, and the flexibility is higher.
Preferably, connection structure is including locating protruding tang 9 at combination blade body upper and lower both ends, locating the concave tang on flange 1 and the lower flange 2, protruding tang 9 and concave tang mutually support, realized ceramic mosaic piece 3 and last flange 1, the location between the flange 2 down and spacing through the tang structure, the blade body of ceramic mosaic piece 3 adopts little clearance fit with last flange 1, lower flange 2, the location is convenient accurate.
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 (5)
1. The utility model provides a guide vane based on metal base band ceramic mosaic block which characterized in that: including last flange plate (1), lower flange plate (2) and combination blade, be equipped with connection structure between combination blade and last flange plate (1), lower flange plate (2), the combination blade includes metal matrix blade (4) and ceramic mosaic block (3), the length of ceramic mosaic block (3) and metal matrix blade (4) is the same and both set up side by side, be equipped with between ceramic mosaic block (3) and metal matrix blade (4) and make mutual location and confined mosaic structure between the two, the leading edge of blade is located in ceramic mosaic block (3).
2. The metal-based ceramic mosaic block of claim 1, wherein: the mosaic structure is including locating ceramic mosaic block (3) lateral wall edge intermediate position's middle caulking groove, locating metal base blade (4) lateral wall edge intermediate position's middle mosaic block (5), middle mosaic block (5) insert to in the middle caulking groove.
3. The metal-based ceramic mosaic block of claim 1, wherein: mosaic structure locates inboard boss (7) of metal base blade (4) lateral wall edge inboard including outside boss (6) of locating ceramic mosaic piece (3) lateral wall edge outside, the lateral wall inner wall of ceramic mosaic piece (3) and metal base blade (4) lateral wall outside are equipped with the caulking groove, outside boss (6) insert to the caulking groove on metal base blade (4) in, insert to the caulking groove of ceramic mosaic piece (3) inboard boss (7), outside boss (6) are pasted mutually with the lateral wall of inboard boss (7).
4. The metal-based ceramic mosaic block of claim 1, wherein: the mosaic structure is including locating fixed block (8) on metal base blade (4) inner wall, pottery mosaic block (3) pastes mutually with the outer wall of fixed block (8).
5. The guide vane based on a metal base band ceramic mosaic block according to any one of claims 1-4, wherein: the connecting structure comprises convex spigot (9) arranged at the upper end and the lower end of the combined blade body, and concave spigot arranged on the upper edge plate (1) and the lower edge plate (2), wherein the convex spigot (9) is matched with the concave spigot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107226.6A CN114109519A (en) | 2022-01-28 | 2022-01-28 | Guide blade based on metal base band ceramic mosaic block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210107226.6A CN114109519A (en) | 2022-01-28 | 2022-01-28 | Guide blade based on metal base band ceramic mosaic block |
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| Publication Number | Publication Date |
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| CN114109519A true CN114109519A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210107226.6A Pending CN114109519A (en) | 2022-01-28 | 2022-01-28 | Guide blade based on metal base band ceramic mosaic block |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906126A (en) * | 2023-09-14 | 2023-10-20 | 中国航发北京航空材料研究院 | Multi-body guide vane of ceramic matrix composite and single crystal superalloy and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107934A (en) * | 1993-10-27 | 1995-09-06 | 西屋电气公司 | Gas turbine vane |
| CN1170079A (en) * | 1996-05-02 | 1998-01-14 | 亚瑞亚·勃朗勃威力有限公司 | Blades of fluid machine affected by hot loading |
| CN1798905A (en) * | 2003-06-18 | 2006-07-05 | 西门子公司 | Blade and gas turbine |
| CN105873694A (en) * | 2013-08-23 | 2016-08-17 | 西门子能源公司 | Turbine component casting core with high resolution region |
| US20180304371A1 (en) * | 2015-10-29 | 2018-10-25 | Siemens Energy, Inc. | Composite metallic and ceramic gas turbine engine blade |
| CN110700898A (en) * | 2019-11-21 | 2020-01-17 | 中国科学院工程热物理研究所 | Ceramic-metal combined turbine guide vane and gas turbine thereof |
| CN111102017A (en) * | 2019-12-13 | 2020-05-05 | 西安鑫垚陶瓷复合材料有限公司 | Aeroengine ceramic matrix composite fixed guider blade structure and forming method thereof |
| CN112901278A (en) * | 2021-01-29 | 2021-06-04 | 大连理工大学 | Turbine blade adopting buckle fixed ceramic armor |
-
2022
- 2022-01-28 CN CN202210107226.6A patent/CN114109519A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107934A (en) * | 1993-10-27 | 1995-09-06 | 西屋电气公司 | Gas turbine vane |
| CN1170079A (en) * | 1996-05-02 | 1998-01-14 | 亚瑞亚·勃朗勃威力有限公司 | Blades of fluid machine affected by hot loading |
| CN1798905A (en) * | 2003-06-18 | 2006-07-05 | 西门子公司 | Blade and gas turbine |
| CN105873694A (en) * | 2013-08-23 | 2016-08-17 | 西门子能源公司 | Turbine component casting core with high resolution region |
| US20180304371A1 (en) * | 2015-10-29 | 2018-10-25 | Siemens Energy, Inc. | Composite metallic and ceramic gas turbine engine blade |
| CN110700898A (en) * | 2019-11-21 | 2020-01-17 | 中国科学院工程热物理研究所 | Ceramic-metal combined turbine guide vane and gas turbine thereof |
| CN111102017A (en) * | 2019-12-13 | 2020-05-05 | 西安鑫垚陶瓷复合材料有限公司 | Aeroengine ceramic matrix composite fixed guider blade structure and forming method thereof |
| CN112901278A (en) * | 2021-01-29 | 2021-06-04 | 大连理工大学 | Turbine blade adopting buckle fixed ceramic armor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906126A (en) * | 2023-09-14 | 2023-10-20 | 中国航发北京航空材料研究院 | Multi-body guide vane of ceramic matrix composite and single crystal superalloy and preparation method thereof |
| CN116906126B (en) * | 2023-09-14 | 2023-12-08 | 中国航发北京航空材料研究院 | Multi-body guide vane of ceramic matrix composite and single crystal superalloy and preparation method thereof |
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Application publication date: 20220301 |