CN114060305A - Fan containing casing and preparation method thereof - Google Patents
Fan containing casing and preparation method thereof Download PDFInfo
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- CN114060305A CN114060305A CN202010745776.1A CN202010745776A CN114060305A CN 114060305 A CN114060305 A CN 114060305A CN 202010745776 A CN202010745776 A CN 202010745776A CN 114060305 A CN114060305 A CN 114060305A
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a fan blade containing casing, which comprises a composite material cylindrical wall, wherein an outer ceramic tile is laminated on the outward surface of the composite material cylindrical wall, and an inner ceramic tile is laminated on the inward surface of the composite material cylindrical wall; the fan blade containment case has one or more of the following features: the inward surface of the outer ceramic tile is provided with one or more inward convex teeth, and the inward convex teeth penetrate through the composite material cylindrical wall and are abutted against the inner ceramic tile; the outward facing surface of the inner ceramic tiles has one or more outwardly projecting teeth that penetrate the composite tubular wall and interfere with the outer ceramic tiles.
Description
Technical Field
The invention relates to the technical field of aviation, in particular to a fan containing casing and a preparation method thereof.
Background
The fan-containing casing is an important part of an aircraft engine, and is provided with a cylindrical wall surrounding the periphery of a fan, and the function of the fan-containing casing is to contain fallen fan blades or fragments when the fan blades are accidentally fallen off or damaged, so that the further damage to the engine and the aircraft structure is prevented.
In recent years, the demands for higher thrust-weight ratio and lighter weight of an aircraft engine have been increasing. New types of aircraft engines have incorporated composite materials into the components of the products. In which very light weight resin-based composites have been applied to fan cases.
In the process of running an engine, huge fan blades have the risk of blade falling off, and both metal fan blades and composite material fan blades (containing metal reinforcing edges) have the cutting risk on a fan containing casing.
Disclosure of Invention
The inventor finds that the fan casing is large in size, needs to bear additional components such as a mounting pipeline and an Auxiliary Power Unit (APU) and is easy to deform, and the barrel deformation causes the risk of unbalance of an engine.
The present disclosure provides a fan containment case having enhanced stiffness, but also enhanced resistance to impact and cutting.
In some aspects, the present disclosure provides a fan blade containment case comprising a composite tubular wall having an outwardly facing surface laminated with outer ceramic tiles, and an inwardly facing surface laminated with inner ceramic tiles;
the fan blade containment case has one or more of the following features:
the inward surface of the outer tiles has one or more inward projecting teeth which penetrate the composite tubular wall and interfere with the inner tiles;
the outward surface of the inner tiles has one or more outward projecting teeth that penetrate the composite tubular wall and interfere with the outer tiles.
In the scheme, the inward convex teeth and the outward convex teeth which penetrate through the composite material cylindrical wall and are abutted to the ceramic tile on the other side play a role similar to an I-shaped web plate, and the deformation resistance of the casing is effectively improved. In addition, the ceramic material has stronger rigidity and impact resistance, and can effectively resist the impact of fan blade fragments, thereby enhancing the impact resistance and cutting resistance of the fan containing casing. In addition, the ceramic layer thickness at the convex tooth part is increased, so that the convex tooth can also play a role in preventing crack propagation.
In some embodiments, the containment case has one or more of the following features:
the inward surface of the outer ceramic tile is provided with a plurality of inward projecting teeth, the outward surface of the inner ceramic tile is provided with outward projecting teeth, and the outward projecting teeth of the inner ceramic tile penetrate through the composite material cylindrical wall, are embedded between at least two inward projecting teeth and are abutted against the outer ceramic tile;
the outward surface of the inner ceramic tile is provided with a plurality of outward convex teeth, the inward surface of the outer ceramic tile is provided with inward convex teeth, and the inward convex teeth of the outer ceramic tile penetrate through the composite material cylindrical wall, are embedded between at least two outward convex teeth and are in interference with the inner ceramic tile.
In the scheme, the inward convex teeth and the outward convex teeth form a concave-convex embedded structure, so that the structural stability is improved, and the deformation resistance of the casing is further improved.
In some embodiments, the containment case has one or more of the following features:
the inward convex teeth of the outer ceramic tiles are provided with first grooves, and the outward convex teeth of the inner ceramic tiles penetrate through the composite material cylindrical wall and are embedded in the first grooves;
the outward convex teeth of the inner ceramic tiles are provided with second grooves, and the inward convex teeth of the outer ceramic tiles penetrate through the composite material cylindrical wall and are embedded in the second grooves.
In the scheme, the inward convex teeth and the outward convex teeth form a concave-convex embedded structure, so that the structural stability is improved, and the deformation resistance of the casing is further improved.
In some embodiments, the containment case has one or more of the following features:
the contact surfaces (e.g. all contact surfaces) of the inner ceramic tiles with the composite cylindrical wall are bonded by means of an adhesive;
the contact surfaces (e.g. all contact surfaces) of the outer ceramic tiles with the composite cylindrical wall are bonded by means of an adhesive;
the contact surfaces (e.g. all contact surfaces) of the inner and outer ceramic tiles are bonded by means of an adhesive;
the outer ceramic tiles, the composite cylindrical wall and the inner ceramic tiles are fixed in an overlapping mode through pins.
In the scheme, the outer ceramic tile, the composite material cylindrical wall and the inner ceramic tile can be firmly combined in a bonding agent bonding/pin fixing mode.
In some embodiments, the containment case has one or more of the following features:
-the outwardly facing surface of the composite tubular wall is laid with a plurality of outer ceramic tiles;
the inwardly facing surface of the composite tubular wall is laid with a plurality of inner ceramic tiles.
In the scheme, the reliability of the fan containing casing can be improved by the aid of the ceramic tiles. The ceramic tiles can effectively avoid crack extension, and cracks of one ceramic tile cannot affect other ceramic tiles.
In some embodiments, the containment case has one or more of the following features:
-a plurality of outer ceramic tiles are spliced in alignment or in misalignment with each other;
-splicing or splicing in register one with the other of a plurality of inner ceramic tiles.
In the scheme, the ceramic tiles can be spliced in an aligned or staggered mode according to needs.
In some embodiments, the containment case has one or more of the following features:
-a plurality of outer ceramic tiles are laid around the circumference on the outwardly facing surface of the composite tubular wall, adjacent to each other;
-a plurality of inner ceramic tiles are laid circumferentially on the inwardly facing surface of the composite tubular wall, adjacent to each other.
In the scheme, the ceramic tiles are used for reinforcing the composite material cylindrical wall in a surrounding manner, so that the rigidity, the bearing capacity and the impact resistance of the fan containing casing are effectively improved.
In some embodiments, the containment case has one or more of the following features:
-the inner ceramic tile has an inner core of sound absorbing material;
the outer ceramic tiles have an inner core of sound absorbing material.
The sound absorbing material inner core can effectively isolate engine noise.
In some embodiments, the outer ceramic tiles are faced on their outward facing surfaces with a protective layer (e.g., a fiber reinforced resin-based composite material layer).
In some embodiments, the inward facing surfaces of the inner ceramic tiles are affixed with a protective layer (e.g., a fiber reinforced resin-based composite material layer).
In some embodiments, a protective sheet (e.g., a fiber-reinforced resin-based composite material layer) covers the plurality of inner ceramic tiles.
In some embodiments, a protective sheet (e.g., a fiber-reinforced resin-based composite material layer) covers the plurality of outer ceramic tiles.
In the scheme, the protective layer can prevent the ceramic tiles from falling off from the structure, buffer impact and have the function of tissue crack propagation.
In some embodiments, the protective layer is a fiber-reinforced resin-based composite material layer.
In some embodiments, the fiber-reinforced resin-based composite material layer contains fibers, which may be nylon fibers, aramid fibers, or Ultra-High Molecular Weight Polyethylene (UHMWPE);
in some embodiments, the resin in the fiber reinforced resin based composite material layer is a thermosetting resin or a thermoplastic resin, for example one or more selected from the group consisting of epoxy resins, bismaleimide resins, polyimide resins, polyetheretherketone.
In some embodiments, the fiber content in the fiber-reinforced resin-based composite material layer is 30-65%.
In some embodiments, the resin content of the fiber-reinforced resin-based composite material layer is 35-70%.
In some embodiments, the composite tubular wall is made of a resin-based composite.
In some embodiments, the sidewall of the fan containment case comprises a composite tubular wall.
In some embodiments, the composite tubular wall is formed from a fabric-reinforced resin-based composite.
Preferably, the fabric-reinforced resin-based composite material contains an epoxy resin;
preferably, the fabric-reinforced resin-based composite material contains a carbon fiber fabric;
preferably, the content of the fiber fabric in the fabric-reinforced resin-based composite material is 50-60%;
preferably, the resin content of the fabric-reinforced resin-based composite material is 40-50%.
In some embodiments, the material of the outer ceramic and inner ceramic tiles is each independently selected from the group consisting of: boron carbide B4C ceramic, alumina Al2O3Ceramics, silicon carbide SiC ceramics.
In some embodiments, the material of the outer ceramic and inner ceramic tiles is ceramic subjected to toughening treatment. The toughening treatment is selected from one or more of particle toughening, whisker toughening, phase change toughening and nano toughening.
In some embodiments, the composite tubular wall has a modulus of elasticity of 40 to 200 GPa.
In some embodiments, the outer ceramic tile or the inner ceramic tile has an elastic modulus of 300 to 500 GPa.
In some embodiments, the composite tubular wall has a thickness of 5 to 40 mm.
In some embodiments, the outer ceramic tiles have a thickness (with teeth) of 2-20 mm.
In some embodiments, the inner ceramic tiles have a thickness (with teeth) of 2-20 mm.
In some embodiments, the raised height of the teeth is 2-20 mm.
Description of terms:
"inwardly" means toward the cavity of the barrel;
"outwardly" refers to a direction away from the cavity of the barrel.
By "ultra high molecular weight polyethylene fibers" is meant fibers consisting of a molecular weight of 106～107The polyethylene raw material is obtained.
The term "fiber-reinforced" refers to a material having dispersed within it fibers as a reinforcing phase.
The term "fibrous web reinforcement" refers to a material having dispersed within it as a reinforcing phase a fibrous web, for example, one or more layers of a two-dimensional fibrous web, for example, a three-dimensional fibrous web.
The term "epoxy resin" refers to any monomeric, dimeric, oligomeric, or polymeric epoxy material containing multiple (2, 3, 4, 5, 6, or more than 6) epoxy groups that is cured by reaction with amines, alcohols, phenols, carboxylic acids, and anhydrides.
Various relative terms such as "front," "back," "top," and "bottom," "upper," "lower," "above," "below," and the like may be used to facilitate description of various embodiments. Relative terms are defined with respect to conventional orientations of the structure and do not necessarily indicate an actual orientation of the structure at the time of manufacture or use. The following detailed description is, therefore, not to be taken in a limiting sense. As used in the description and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.
The content means a content of 0 or more, such as 10% or more, for example 20% or more, for example 30% or more, for example 40% or more, for example 50% or more, for example 60% or more, for example 70% or more, for example 80% or more, for example 90% or more, for example 100%. When the content is 100%, the meaning of "containing" is equivalent to "consisting of …".
Unless otherwise specified,% means% by weight.
Advantageous effects
One or more technical schemes of the present disclosure have one or more of the following beneficial effects:
1. the fan casing structure formed by combining the inner ceramic tile, the outer ceramic tile and the composite material cylindrical wall has the advantages of high rigidity, deformation resistance, cutting resistance and impact resistance.
2. The convex teeth of the inner ceramic tile and the outer ceramic tile form an I-shaped structure, so that the deformation resistance of the composite material is greatly improved. The resin-based composite material is compacted by the inner and outer ceramic blocks, so that the resin-based material is prevented from being layered, cracks of the resin-based material are prevented from expanding, and the interface combination is enhanced.
3. The composite material cylindrical wall with a plurality of holes is laminated and bonded with the ceramic, so that the bonding area is increased, and the bonding strength is improved. The combination of a plurality of ceramic blocks forms an inner layer structure of the casing, so that impact energy generated when the blade falls off can be weakened.
4. The sound absorption material filled in the outer layer ceramic blocks can reduce the noise generated when the engine runs.
5. The surface of the ceramic block layer is provided with a crack stop layer which protects the ceramic block, can prevent the crack in the ceramic from expanding when impacted and prevents the ceramic block from peeling off from the structure.
Drawings
FIG. 1 is a schematic view of a fan containment case of an embodiment;
FIG. 2 is a cross-sectional schematic view of a sidewall of a fan containment case of an embodiment;
FIG. 3 is a perspective view of a side wall of a fan containment case of one embodiment;
FIG. 4 is a schematic view of an embodiment of an outer ceramic tile;
FIG. 5 is a schematic view of an embodiment of an inner ceramic tile;
FIG. 6 is a partial schematic view of an embodiment of a resin-based composite tubular wall;
FIG. 7 is a schematic view of the interfitting of the inwardly and outwardly projecting teeth of various embodiments of the fan containment case;
FIG. 8 is a schematic view of an embodiment of staggered outer ceramic tiles;
FIG. 9 is a schematic view of an embodiment of outer ceramic tiles in an aligned arrangement.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The medicines or instruments used are not indicated by manufacturers, and are all conventional products which can be obtained commercially.
FIG. 1 is a schematic view of a fan containment case. As shown in fig. 1, the fan containment case 1 includes a circumferential sidewall 2. The side wall 2 comprises a composite cylindrical wall 21, the composite cylindrical wall 21 having outwardly facing laminated outer ceramic tiles 11 and inwardly facing laminated inner ceramic tiles 31. In some embodiments, the outer tiles 11, the composite cylindrical wall 21 and the inner tiles 31 are adhesively bonded by an adhesive to form a composite multi-layer body. In some embodiments, the outer tiles 11, the composite cylindrical wall 21 and the inner tiles 31 are fixedly superimposed by pins, forming a composite multilayer body.
Further, FIG. 2 is a cross-sectional view of a sidewall of the fan containment case. FIG. 3 is a perspective view of a side wall of a fan containment case. Figure 4 is a schematic view of an outer ceramic tile. Figure 5 is a schematic view of an inner ceramic tile. FIG. 6 is a partial schematic view of a composite tubular wall.
In some embodiments, as shown in FIGS. 2-6, the inwardly facing surfaces of the outer tiles 11 have a plurality of inwardly projecting teeth 12, the inwardly projecting teeth 12 passing through the composite tubular wall 21 to interfere with the inner tiles 31.
In some embodiments, as shown in FIGS. 2-6, the outward surfaces of inner tiles 31 have a plurality of outwardly projecting teeth 32, and outwardly projecting teeth 32 extend through composite tubular wall 21 and interfere with outer tiles 11.
In the above scheme, as shown in fig. 2 to 3, the inward convex teeth 12 and the outward convex teeth 32 play a role similar to an i-shaped web plate, so that the deformation resistance of the fan containing casing is improved.
In some embodiments, as shown in FIGS. 2-3, the inwardly projecting teeth 12 extend through the composite cylindrical wall 21 and are adhesively bonded to the composite cylindrical wall 21 and the inner ceramic tiles 31, respectively.
In some embodiments, as shown in FIGS. 2-3, the outwardly projecting teeth 32 penetrate the composite cylindrical wall 21 and are adhesively bonded to the composite cylindrical wall 21 and the outer ceramic tiles 11, respectively.
In the above solution, the inward convex teeth 12 (or the outward convex teeth 32) have an increased bonding area, which is advantageous in preventing the composite cylindrical wall 21 from delaminating or crack propagation, and in enhancing the bonding strength between the composite cylindrical wall 21 and the three outer and inner ceramic tiles 11 and 31.
In some embodiments, the inwardly projecting teeth of the outer tiles are provided with first recesses into which the outwardly projecting teeth of the inner tiles pass through the composite cylindrical wall and are engaged (e.g. transition-live interference engagement).
In some embodiments, as shown in FIGS. 2-6, the outwardly projecting teeth 32 of the inner tiles 31 are provided with second recesses 33, and the inwardly projecting teeth 12 of the outer tiles 11 pass through the composite cylindrical wall 21 and are fitted (e.g., transitionally or interferingly fitted) in the second recesses 33. This structure improves the strength of the connection between outer tile 11 and inner tile 31.
In some embodiments, as shown in FIGS. 2-4, the outer ceramic tiles 11 have an inner core 41 of sound absorbing material. The core 41 of sound absorbing material can reduce noise when the engine is running.
In some embodiments, as shown in FIG. 6, the composite tubular wall 21 is provided with holes 22 for the inward facing teeth 12 or the outward facing teeth 32 to pass through.
FIG. 7 is a schematic view of the interfitting of the inwardly and outwardly projecting teeth of various embodiments of the fan containment case.
In some embodiments, as shown in FIG. 7, the outward facing surface of inner tiles 31 are provided with a plurality of outwardly projecting teeth 32 and the inward facing surface of outer tiles 11 are provided with inwardly projecting teeth 12. The plurality of outwardly projecting teeth 32 of the inner tiles 31 have a clearance between each other and the inwardly projecting teeth 12 of the outer tiles 11 pass through the composite cylindrical wall 21 and are engaged (e.g. transition or interference engagement) in the clearance of at least 2 inwardly projecting teeth 12. This structure improves the strength of the connection between outer tile 11 and inner tile 31.
As shown in fig. 7, (a) of fig. 7 shows that one cylindrical inward projecting tooth 12 is fitted in the gap formed by four cylindrical outward projecting teeth 32. Fig. 7 (b) shows that one triangular-cylindrical inward projecting tooth 12 is fitted in the gap formed by the three triangular-cylindrical outward projecting teeth 32. Fig. 7 (c) shows that one square column-shaped inward-projecting tooth 12 is fitted in the space formed by the four square column-shaped outward-projecting teeth 32. The embedding structure is beneficial to improving the deformation resistance of the fan containing casing.
In still other embodiments, the inward facing surfaces of the outer tiles are provided with a plurality of inwardly projecting teeth and the outward facing surfaces of the inner tiles are provided with a plurality of outwardly projecting teeth. The plurality of inwardly projecting teeth of the outer tiles have a gap therebetween, and the outwardly projecting teeth of the inner tiles pass through the composite cylindrical wall and are engaged (e.g. transition or interference) in the gap. This structure improves the strength of the connection between the inner and outer tiles.
In some embodiments, the shape of the lobes is conical, cylindrical, triangular cylindrical, or square cylindrical.
In some embodiments, as shown in fig. 8, the outward facing surface of the composite tubular wall is laid with a plurality of outer ceramic tiles 11, the plurality of outer ceramic tiles 11 being laid in a staggered arrangement.
In some embodiments, as shown in fig. 9, the outward facing surface of the composite tubular wall is laid with a plurality of outer ceramic tiles 11, the plurality of outer ceramic tiles 11 being laid in an aligned arrangement.
In some embodiments, the consolidating agent may be a high temperature resistant organic adhesive or an inorganic adhesive.
In some embodiments, the inward facing surfaces of the inner ceramic tiles are affixed with a protective layer (e.g., a fiber reinforced resin-based composite material layer). The protective layer (e.g., a fiber-reinforced resin-based composite material layer) has the effect of buffering impact and preventing crack propagation.
While specific embodiments of the invention have been described in detail, those skilled in the art will understand that: various modifications may be made in the details within the teachings of the disclosure, and these variations are within the scope of the invention. The full scope of the invention is given by the appended claims and any equivalents thereof.
Claims (11)
1. A fan blade containment case comprises a composite tubular wall with outer ceramic tiles laminated on an outward surface of the composite tubular wall and inner ceramic tiles laminated on an inward surface of the composite tubular wall;
the fan blade containment case has one or more of the following features:
-the inward facing surface of the outer tiles has one or more inward projecting teeth which pass through the composite cylindrical wall and interfere with the inner tiles;
the outward surface of the inner tiles has one or more outward projecting teeth that penetrate the composite cylindrical wall and interfere with the outer tiles.
2. The containment case of claim 1, having one or more of the following features:
the inward surface of the outer ceramic tile is provided with a plurality of inward projecting teeth, the outward surface of the inner ceramic tile is provided with outward projecting teeth, and the outward projecting teeth of the inner ceramic tile penetrate through the composite material cylindrical wall, are embedded between at least two inward projecting teeth and are abutted against the outer ceramic tile;
the outward surface of the inner ceramic tile is provided with a plurality of outward convex teeth, the inward surface of the outer ceramic tile is provided with inward convex teeth, and the inward convex teeth of the outer ceramic tile penetrate through the composite material cylindrical wall, are embedded between at least two outward convex teeth and are in interference with the inner ceramic tile.
3. The containment case of claim 1, having one or more of the following features:
-the inwardly projecting teeth of the outer tiles are provided with first grooves in which the outwardly projecting teeth of the inner tiles pass through the composite tubular wall;
the outward convex teeth of the inner ceramic tiles are provided with second grooves, and the inward convex teeth of the outer ceramic tiles penetrate through the composite material cylindrical wall and are embedded in the second grooves.
4. The containment case of claim 1, having one or more of the following features:
-the contact surfaces of the inner ceramic tiles and the composite cylindrical wall are bonded by means of an adhesive;
-the contact surfaces of the outer ceramic tiles and the composite cylindrical wall are bonded by means of an adhesive;
-the contact surfaces of the inner and outer ceramic tiles are bonded by an adhesive;
-the outer ceramic tiles, the composite cylindrical wall and the inner ceramic tiles are fixed by overlapping with pins.
5. The containment case of claim 1, having one or more of the following features:
-the outwardly facing surface of the composite tubular wall is laid with a plurality of outer ceramic tiles;
-the inwardly facing surface of the composite tubular wall is laid with a plurality of inner ceramic tiles.
6. The containment case of claim 5, having one or more of the following features:
-the outer ceramic tiles are spliced in alignment or staggered with each other;
-the inner ceramic tiles are spliced in alignment or out of alignment with each other.
7. The containment case of claim 5, having one or more of the following features:
-a plurality of outer ceramic tiles are laid around the circumference on the outwardly facing surface of the composite tubular wall, adjacent two by two;
-a plurality of inner ceramic tiles are laid circumferentially on the inwardly facing surface of the composite tubular wall, adjacent two by two.
8. The containment case of claim 1, having one or more of the following features:
-the inner ceramic tile has an inner core of sound absorbing material;
-the outer ceramic tiles have an inner core of sound absorbing material.
9. The containment case of claim 1, having one or more of the following features:
-the outer ceramic tiles are faced on their outward facing surface with a protective layer (e.g. a layer of fibre reinforced resin based composite material);
-the inner ceramic tiles are faced on their inwardly facing surfaces with a protective layer (e.g. a layer of fibre-reinforced resin-based composite material).
10. The containment case of claim 1, said composite tubular wall being formed of a fabric reinforced resin-based composite material;
preferably, the fabric-reinforced resin-based composite material contains epoxy resin;
preferably, the fabric-reinforced resin-based composite material contains carbon fiber fabric;
preferably, the content of the fiber fabric in the fabric reinforced resin matrix composite material is 50-60%;
preferably, the content of resin in the fabric-reinforced resin-based composite material is 40-50%.
11. A containment case according to claim 1, the outer and inner ceramic tiles each being independently selected from: boron carbide B4C ceramic, alumina Al2O3Ceramics, silicon carbide SiC ceramics.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745776.1A CN114060305B (en) | 2020-07-29 | 2020-07-29 | Fan containing casing and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745776.1A CN114060305B (en) | 2020-07-29 | 2020-07-29 | Fan containing casing and preparation method thereof |
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| CN114060305B CN114060305B (en) | 2024-07-12 |
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|---|---|
| CN114060305B (en) | 2024-07-12 |
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