CN210523750U - Ceramic core for preparing hollow blade - Google Patents
Ceramic core for preparing hollow blade Download PDFInfo
- Publication number
- CN210523750U CN210523750U CN201920804966.9U CN201920804966U CN210523750U CN 210523750 U CN210523750 U CN 210523750U CN 201920804966 U CN201920804966 U CN 201920804966U CN 210523750 U CN210523750 U CN 210523750U
- Authority
- CN
- China
- Prior art keywords
- ceramic core
- hollow blade
- shaped channel
- edge
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A ceramic core for preparing a hollow blade is of an integrally die-cast fan blade structure and comprises a front edge channel and a U-shaped channel which are positioned on the windward side of the hollow blade, an exhaust edge which is positioned on the leeward side of the hollow blade, and a supporting block, a triangular positioning block and a positioning supporting seat which are positioned at the root part of the hollow blade; the U-shaped channel is overhead and fixedly arranged in the ceramic core, one side of the U-shaped channel is fixedly provided with a front edge channel, the other side of the U-shaped channel is fixedly provided with an exhaust edge, and a plurality of reinforcing ribs are fixedly arranged at the overhead part of the U-shaped channel; a plurality of exhaust holes are formed on the exhaust edge; the bottom of the exhaust edge and the front edge channel is fixedly provided with a supporting block, the bottom of the supporting block is fixedly provided with a positioning supporting seat, and one side of the positioning supporting seat is fixedly provided with a triangular positioning block. This ceramic core passes through the design of strengthening rib, supporting shoe and location supporting seat, has controlled ceramic core deformation rate effectively, has improved ceramic core's dimensional accuracy, has improved ceramic core's qualification rate to a great extent.
Description
Technical Field
The utility model relates to a precision casting technical field especially relates to a ceramic core for preparing hollow blade.
Background
With the upgrade of the thrust-weight ratio of the aircraft engine, the temperature of the front inlet of the turbine of the aircraft engine is continuously increased. The operating temperatures of turbine blades, which are critical hot end components of aircraft engines, are increasing. From the development of turbine blade materials, structures and manufacturing techniques, the requirement of continuously increasing the front inlet temperature of the turbine cannot be met by simply improving the heat strength of the high-temperature alloy. Over the past 50 years, the engine turbine front inlet temperature has increased by 500 ℃, 70% of which was achieved due to better air cooling design and advanced manufacturing techniques.
With the continuous development of the cooling technology, the shape of the inner cavity of the blade is gradually complex, the quality of a ceramic core for forming a complex inner cooling channel directly influences the service performance of the hollow blade, and the size precision, the qualification rate and the casting cost of the blade are determined. The ceramic core for manufacturing the hollow blade generally has various structures such as a slender channel, a U-shaped channel, a weak exhaust edge and the like, and the structures are easy to deform in the core pressing and sintering processes, so that the dimensional accuracy of the ceramic core is influenced, and the ceramic core is scrapped.
Through searching the published patents, the following patent documents most relevant to the technical scheme are found:
a ceramic core (CN109396388A) for a hollow turbine blade comprises a pottery clay layer, a non-woven fabric adhesive is adhered to the outer part of the pottery clay layer, a non-woven fabric layer is compounded inside the non-woven fabric adhesive, a reinforcing layer is adhered to the outer part of the non-woven fabric adhesive, a buffer layer is compounded on the outer part of the reinforcing layer, a high temperature resistant layer is compounded on the outer part of the buffer layer, and an anti-corrosion layer is compounded on the outer part of the high temperature resistant layer. This a ceramic core for hollow turbine blade through setting up non-woven fabrics layer and the non-woven fabrics adhesive of being made by polypropylene resin, makes argil layer appear broken back, and the piece on argil layer can not fall off, still can adhere on the non-woven fabrics layer, and then has made things convenient for when argil layer is broken to arrange in order the ceramic core that is used for hollow turbine blade to reached the purpose that is convenient for to arrange in order after the ceramic core that is used for hollow turbine blade is broken.
Through comparative analysis of the above patent publications, the applicant believes that the ceramic core structure and the hollow blade wind-making effect in the present application are different from those in the prior art, and therefore the above patent does not affect the novelty of the present application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide a ceramic core for preparing hollow blade, this ceramic core passes through the design of strengthening rib, supporting shoe and location supporting seat, has controlled ceramic core deformation rate effectively, has improved ceramic core's size precision, has improved ceramic core's qualification rate to a great extent.
A ceramic core for preparing a hollow blade is of an integrally die-cast fan blade structure and comprises a front edge channel and a U-shaped channel which are positioned on the windward side of the hollow blade, an exhaust edge which is positioned on the leeward side of the hollow blade, and a supporting block, a triangular positioning block and a positioning supporting seat which are positioned at the root part of the hollow blade; the U-shaped channel is overhead and fixedly arranged in the ceramic core, one side of the U-shaped channel is fixedly provided with a front edge channel, the other side of the U-shaped channel is fixedly provided with an exhaust edge, and a plurality of reinforcing ribs are fixedly arranged at the overhead part of the U-shaped channel; a plurality of exhaust holes are formed on the exhaust edge; the bottom of the exhaust edge and the front edge channel is fixedly provided with a supporting block, the bottom of the supporting block is fixedly provided with a positioning supporting seat, and one side of the positioning supporting seat is fixedly provided with a triangular positioning block.
And two ends of the reinforcing rib are fixedly connected with the U-shaped channel and the exhaust edge, the U-shaped channel and the front edge channel and two straight edges of the U-shaped channel respectively.
Moreover, the exhaust holes comprise rectangular windows and turbulence column holes, wherein the rectangular windows are uniformly distributed on the exhaust edge at the tail end of the leeward side of the hollow blade, and the middle parts of the exhaust edges are staggered to form a plurality of turbulence column holes.
The long sides of the rectangular windows are arranged in a direction parallel to the air flowing direction from the windward side to the leeward side of the hollow blades.
Moreover, the top of the supporting block is triangular or trapezoidal, and the middle part of the supporting block is hollowed out.
And the number of the U-shaped channels is more than or equal to 1.
The utility model has the advantages and the technical effect be:
the utility model discloses a ceramic core for preparing hollow blade, the department sets up a plurality of strengthening ribs through making somebody a mere figurehead at "U" type passageway and exhaust edge, "U" type passageway and leading edge passageway and two straight flanges of "U" type passageway, and the supporting shoe through triangle-shaped or trapezium structure connection location supporting seat, ceramic core deformation has been controlled effectively, long and thin leading edge passageway has been avoided promptly, make somebody a mere figurehead "U" type passageway, weak and the deformation of fragile structures such as porous exhaust edge, improve ceramic core size precision, ceramic core's qualification rate has been improved to a great extent.
The utility model discloses a ceramic core for preparing hollow blade, processing yield is high, and "U" type passageway is built on stilts and hollow out construction reduces hollow blade weight in the backup pad, has improved hollow blade's wind-making effect, is a hollow blade shape ceramic core that has higher creativity.
Drawings
Fig. 1 is a front view of the present invention;
in the figure: 1-a leading edge channel; 2- "U" type channel; 3-exhausting edge; 4-reinforcing ribs; 5-a support block; 6-triangular positioning blocks; 7-positioning a supporting seat; 8-rectangular window; 9-burbling post hole.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
A ceramic core for preparing a hollow blade is of an integrally die-cast fan blade structure and comprises a front edge channel 1 and a U-shaped channel 2 which are positioned on the windward side of the hollow blade, an exhaust edge 3 which is positioned on the leeward side of the hollow blade, a supporting block 5, a triangular positioning block 6 and a positioning supporting seat 7 which are positioned at the root part of the hollow blade; the U-shaped channel is overhead and fixedly arranged in the ceramic core, one side of the U-shaped channel is fixedly provided with a front edge channel, the other side of the U-shaped channel is fixedly provided with an exhaust edge, and a plurality of reinforcing ribs 4 are fixedly arranged at the overhead part of the U-shaped channel; a plurality of exhaust holes are formed on the exhaust edge; the bottom of the exhaust edge and the front edge channel is fixedly provided with a supporting block, the bottom of the supporting block is fixedly provided with a positioning supporting seat, and one side of the positioning supporting seat is fixedly provided with a triangular positioning block.
And two ends of the reinforcing rib are fixedly connected with the U-shaped channel and the exhaust edge, the U-shaped channel and the front edge channel and two straight edges of the U-shaped channel respectively.
Moreover, the exhaust hole comprises rectangular windows 8 and turbulence column holes 9, wherein the rectangular windows are uniformly distributed on the exhaust edge at the tail end of the leeward side of the hollow blade, and the middle parts of the exhaust edges are staggered according to the turbulence column holes.
The long sides of the rectangular windows are arranged in a direction parallel to the air flowing direction from the windward side to the leeward side of the hollow blades.
Moreover, the top of the supporting block is triangular or trapezoidal, and the middle part of the supporting block is hollowed out.
And the number of the U-shaped channels is more than or equal to 1.
For a more clear description of the embodiments of the present invention, the following provides an example:
the utility model discloses a ceramic core for preparing hollow blade comprises leading edge passageway, "U" type passageway, strengthening rib, exhaust edge, supporting shoe, triangle locating piece and location supporting seat. The U-shaped channel is fixedly arranged in an overhead manner, two straight edge end parts of the U-shaped channel are fixedly connected with the front edge channel and the exhaust edge respectively, and reinforcing ribs are fixedly arranged between the two straight edges of the U-shaped channel, between one straight edge of the U-shaped channel and the exhaust edge, and between the other straight edge of the U-shaped channel and the front edge channel; the middle part of the exhaust edge is provided with a plurality of turbulence column holes in a grid-shaped staggered arrangement mode, and a plurality of rectangular windows are arranged in parallel at one end, close to the air outflow end, of the exhaust edge; the top of the supporting block is trapezoidal or triangular, an overhead U-shaped channel is arranged above the top of the supporting block, and two sides of the top of the supporting block are fixedly connected with the front edge channel and the bottom of the exhaust edge respectively; the middle part of the supporting block is provided with a rectangular or round hollowed-out structure, and the bottom of the supporting block is fixedly connected with a positioning supporting seat; the positioning support seat is fixedly provided with a triangular positioning block for positioning and fixedly connecting the hollow blade-shaped ceramic core to a blade shaft (mature product in the prior art) for providing rotary power for the hollow blade.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (6)
1. The utility model provides a flabellum structure that is used for preparing hollow blade, this ceramic core is die-cast as an organic whole which characterized in that: the device comprises a front edge channel and a U-shaped channel which are positioned on the windward side of a hollow blade, an exhaust edge which is positioned on the leeward side of the hollow blade, and a supporting block, a triangular positioning block and a positioning supporting seat which are positioned at the root part of the hollow blade; the U-shaped channel is overhead and fixedly arranged in the ceramic core, one side of the U-shaped channel is fixedly provided with a front edge channel, the other side of the U-shaped channel is fixedly provided with an exhaust edge, and a plurality of reinforcing ribs are fixedly arranged at the overhead part of the U-shaped channel; a plurality of exhaust holes are formed on the exhaust edge; and supporting blocks are fixedly arranged at the bottoms of the exhaust edge and the front edge channel, a positioning supporting seat is fixedly arranged at the bottom of each supporting block, and a triangular positioning block is fixedly arranged on one side of each positioning supporting seat.
2. A ceramic core for making a hollow blade according to claim 1, wherein: two ends of the reinforcing rib are fixedly connected with the U-shaped channel and the exhaust edge, the U-shaped channel and the front edge channel, and two straight edges of the U-shaped channel respectively.
3. A ceramic core for making a hollow blade according to claim 1, wherein: the exhaust hole comprises a rectangular window and turbulence column holes, wherein the rectangular window is uniformly distributed on the exhaust edge at the tail end of the leeward side of the hollow blade, and the middle part of the exhaust edge is staggered into a plurality of turbulence column holes.
4. A ceramic core for making a hollow blade according to claim 3, wherein: the arrangement direction of the long edge of the rectangular window is parallel to the air flowing direction from the windward side to the leeward side on the hollow blade.
5. A ceramic core for making a hollow blade according to claim 1, wherein: the top of the supporting block is triangular or trapezoidal, and the middle of the supporting block is hollowed.
6. A ceramic core for making a hollow blade according to claim 1, wherein: the number of the U-shaped channels is more than or equal to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804966.9U CN210523750U (en) | 2019-05-31 | 2019-05-31 | Ceramic core for preparing hollow blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804966.9U CN210523750U (en) | 2019-05-31 | 2019-05-31 | Ceramic core for preparing hollow blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210523750U true CN210523750U (en) | 2020-05-15 |
Family
ID=70594061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920804966.9U Active CN210523750U (en) | 2019-05-31 | 2019-05-31 | Ceramic core for preparing hollow blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210523750U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544631A (en) * | 2022-02-25 | 2022-05-27 | 中国航发北京航空材料研究院 | Method for evaluating recrystallization formation tendency of turbulence column of single crystal high-temperature alloy hollow blade |
| CN115570105A (en) * | 2022-11-21 | 2023-01-06 | 中国航发四川燃气涡轮研究院 | Method for manufacturing double-wall turbine blade |
-
2019
- 2019-05-31 CN CN201920804966.9U patent/CN210523750U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544631A (en) * | 2022-02-25 | 2022-05-27 | 中国航发北京航空材料研究院 | Method for evaluating recrystallization formation tendency of turbulence column of single crystal high-temperature alloy hollow blade |
| CN114544631B (en) * | 2022-02-25 | 2023-03-14 | 中国航发北京航空材料研究院 | Method for evaluating recrystallization formation tendency of turbulence column of single crystal high-temperature alloy hollow blade |
| CN115570105A (en) * | 2022-11-21 | 2023-01-06 | 中国航发四川燃气涡轮研究院 | Method for manufacturing double-wall turbine blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210523750U (en) | Ceramic core for preparing hollow blade | |
| US20190178089A1 (en) | Turbine blade cooling system with tip diffuser | |
| US7824150B1 (en) | Multiple piece turbine airfoil | |
| US7914257B1 (en) | Turbine rotor blade with spiral and serpentine flow cooling circuit | |
| CN102979583B (en) | Separate-type column rib cooling structure for turbine blade of gas turbine | |
| CN106870015A (en) | A kind of labyrinth type internal cooling structure for high-temperature turbine movable vane trailing edge | |
| CN112974734B (en) | Manufacturing method of integrally formed swept combined blade | |
| CN111706409B (en) | Corrugated air film hole with branch hole | |
| CN111577531B (en) | Shark gill type blade drag reduction structure for wind driven generator, blade and manufacturing method | |
| CN202417610U (en) | Turbine blade tailing edge press seam cooling structure and turbine blade with same | |
| CN103629044B (en) | A kind of leaf and root structure of Blades For Horizontal Axis Wind | |
| CN113565573B (en) | Turbine blade with internal cooling channels distributed in honeycomb-like manner and gas turbine | |
| CN101666329B (en) | Combined airfoil axial flow fan blade | |
| US20180340512A1 (en) | Blade Capable of Efficiently Utilizing Low-Velocity Fluid and Application Thereof | |
| CN111425261A (en) | Turbine blade cooling structure suitable for integrated printing and forming and engine | |
| CN112282860A (en) | Turbine rotor blade platform cooling structure | |
| CN212642950U (en) | Fan blade and wind driven generator | |
| CN112780355B (en) | Supersonic turbine blade's cooling film hole distribution structure that diverges | |
| CN212130557U (en) | Turbine blade cooling structure suitable for integrated printing and forming and engine | |
| CN116494570A (en) | Manufacturing method of wind power blade pultruded slab girder and pultruded slab girder structure | |
| CN211174769U (en) | Fan blade for ceiling fan | |
| CN210949262U (en) | Novel plate type axial flow fan impeller | |
| CN201277145Y (en) | Wind-power blade with asymmetric dual-piece hollow added beam composite structure | |
| JPS6133277Y2 (en) | ||
| CN111485957B (en) | Turbine guide cooling blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |