CN216885493U

CN216885493U - Pipeline local strengthening structure and non-metal pipeline thereof

Info

Publication number: CN216885493U
Application number: CN202220164429.4U
Authority: CN
Inventors: 耿金红
Original assignee: Xi'an Orient Material Technology Co ltd
Current assignee: Xi'an Orient Material Technology Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-05
Anticipated expiration: 2032-01-21

Abstract

The utility model provides a pipeline local strengthening structure and a non-metal pipeline thereof, relates to the technical field related to non-metal low-pressure pipelines for aviation, and solves the technical problem that the non-metal low-pressure pipelines formed by injection molding or paving, winding and forming in the prior art are poor in rigidity. The pipeline local strengthening structure comprises an inner layer, an outer layer and a middle layer arranged between the inner layer and the outer layer, wherein the inner layer comprises at least two layers of inner prepreg cloths, and the inner prepreg cloths of the adjacent layers are connected in a bonding mode; the outer layer comprises at least two layers of outer prepreg cloths, and the outer prepreg cloths of the adjacent layers are connected in a bonding mode; the middle layer is of a honeycomb sandwich structure, and the honeycomb sandwich structure is connected with the adjacent inner prepreg cloth and the honeycomb sandwich structure is connected with the adjacent outer prepreg cloth in a bonding mode. By adopting the honeycomb sandwich structure in the section with weaker rigidity, the nonmetal pipeline has lighter weight under the condition of meeting the strength requirement, and the rigidity is improved.

Description

Pipeline local strengthening structure and non-metal pipeline thereof

Technical Field

The utility model relates to the technical field related to nonmetal low-pressure pipelines for aviation, in particular to a pipeline local strengthening structure and a nonmetal pipeline thereof.

Background

In the non-metal low-pressure pipeline is often used in the aerospace field, the existing non-metal low-pressure pipeline mostly adopts a solid structure, namely injection molding or paving, sticking and winding molding.

However, the applicant finds that the existing nonmetal low-pressure pipelines for aviation have at least the following technical problems:

the nonmetal low-pressure pipeline formed by injection molding or paving, pasting and winding molding has higher strength but poorer rigidity.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pipeline local strengthening structure and a non-metal pipeline thereof, and aims to solve the technical problem that a non-metal low-pressure pipeline formed by injection molding or paving, winding and forming in the prior art is poor in rigidity. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the utility model are described in detail in the following.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a pipeline local strengthening structure, which comprises an inner layer, an outer layer and a middle layer arranged between the inner layer and the outer layer, wherein: the inner layer comprises at least two layers of inner prepreg cloths, and the inner prepreg cloths of adjacent layers are connected in a bonding mode;

the outer layer comprises at least two layers of outer prepreg cloths, and the outer prepreg cloths of adjacent layers are connected in a bonding mode;

the middle layer is of a honeycomb sandwich structure, and the honeycomb sandwich structure is connected with the adjacent inner prepreg cloth and the honeycomb sandwich structure is connected with the adjacent outer prepreg cloth in a bonding mode.

Preferably, the fabric comprises a first layer of inner prepreg cloth, a second layer of inner prepreg cloth, a honeycomb interlayer, a first layer of outer prepreg cloth, a second layer of outer prepreg cloth and a third layer of outer prepreg cloth which are sequentially arranged from inside to outside.

Preferably, the inner prepreg cloth and the outer prepreg cloth are carbon fiber prepreg or glass fiber prepreg.

Preferably, the honeycomb sandwich structure comprises a plurality of honeycomb layers, and adjacent honeycomb layers are bonded and fixed.

Preferably, the honeycomb layer is a paper honeycomb layer or a metal honeycomb layer.

Preferably, the thickness of each honeycomb layer is 1 mm-2 mm.

The utility model also provides a non-metal pipeline which comprises the pipeline local strengthening structure.

The utility model provides a local reinforcing structure of a pipeline, which is a non-metal pipeline forming technology adopting honeycomb local reinforcement and comprises an inner layer, an outer layer and a middle layer arranged between the inner layer and the outer layer, wherein the middle layer is of a honeycomb sandwich structure, and the honeycomb sandwich structure is adopted to reinforce the position with weaker rigidity, so that the aviation non-metal pipeline has lighter weight under the condition of meeting the strength requirement, the rigidity of the non-metal low-pressure pipeline is improved, and the cost is lower.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a non-metallic pipeline provided by an embodiment of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

Reference numerals: 1. an inner layer; 11. a first layer of inner prepreg cloth; 12. the second layer is internally presoaked with cloth; 2. an outer layer; 21. a first layer of outer prepreg cloth; 22. the second layer is pre-impregnated with cloth; 23. the third layer is externally pre-impregnated; 3. a honeycomb sandwich structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a local pipeline reinforcing structure, which includes an inner layer 1, an outer layer 2, and an intermediate layer disposed between the inner layer 1 and the outer layer 2, wherein: the inner layer 1 comprises at least two layers of inner prepreg cloths, and the inner prepreg cloths of adjacent layers are connected in a bonding mode; the outer layer 2 comprises at least two layers of outer prepreg cloths, and the outer prepreg cloths of the adjacent layers are connected in a bonding mode; the middle layer is a honeycomb sandwich structure 3, and the honeycomb sandwich structure 3 and the adjacent inner prepreg cloth and the honeycomb sandwich structure 3 and the adjacent outer prepreg cloth are connected in a bonding mode.

This local structure of reinforceing of pipeline is an adopt nonmetal pipeline forming technique that the honeycomb was locally reinforceed, including inlayer 1, outer 2 and set up the intermediate level between inlayer 1 and outer 2, its intermediate level is honeycomb sandwich structure 3, strengthens through adopting honeycomb sandwich structure 3 in the place that the rigidity is more weak for the nonmetal pipeline of aviation is lighter under the condition of satisfying the strength requirement, has improved the rigidity of nonmetal low pressure pipeline, and the cost is lower.

In a preferred embodiment of the present invention, the pipeline local reinforcing structure comprises a first inner prepreg 11, a second inner prepreg 12, a honeycomb sandwich layer, a first outer prepreg 21, a second outer prepreg 22 and a third outer prepreg 23 arranged in sequence from inside to outside.

That is to say, two layers of prepreg cloth are used inside, the honeycomb sandwich structure 3 is clamped in the middle, and then three layers of prepreg cloth are added outside, so that the pipeline in the form has relatively good rigidity, light weight and low cost. The number of layers of the inner prepreg (inner means inside the honeycomb sandwich structure 3) and the number of layers of the outer prepreg (outer means outside the honeycomb sandwich structure 3) are not limited and may be set as required.

Further, the inner prepreg cloth and the outer prepreg cloth in this embodiment may be glass fiber prepregs. The high-density steel has the advantages of low density, high modulus, good corrosion resistance and the like, and in addition, the raw materials are wide in source, the processing and the forming are simple and convenient, the production efficiency is high, and the designability is strong. Of course, the inner prepreg and the outer prepreg in the present embodiment are not limited to the use of the glass fiber prepreg, and in addition, the inner prepreg and the outer prepreg may also be made of a carbon fiber prepreg. The resin pre-impregnated by the prepregs can be different, and can be epoxy, phenolic aldehyde and the like, and pipelines are formed by paving and pasting layers of prepregs.

As an alternative embodiment of the present invention, the honeycomb sandwich structure 3 includes a plurality of honeycomb layers, and adjacent honeycomb layers are bonded and fixed to each other. The honeycomb layer in this embodiment is a paper honeycomb layer, but may also be a metal honeycomb layer, and the specific implementation form of the honeycomb layer is not limited herein.

The thickness of each honeycomb layer in the present embodiment is 1mm to 2 mm. The number of the honeycomb layers and the size of the honeycomb layers in the honeycomb sandwich structure 3 can be set according to actual requirements.

In addition, the utility model also provides a non-metal pipeline which comprises the pipeline local strengthening structure. Through adopting honeycomb sandwich structure 3 to strengthen in the place that the rigidity is less strong for the nonmetal pipeline of aviation is lighter under the condition of satisfying the strength requirement, has improved the rigidity of nonmetal low pressure pipeline, and the cost is lower, and the practicality is stronger.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A local reinforced structure of pipeline, characterized by, including inlayer, skin and set up in the inlayer with the intermediate level between the skin, wherein:

the inner layer comprises at least two layers of inner prepreg cloths, and the inner prepreg cloths of the adjacent layers are connected in a bonding mode;

the outer layer comprises at least two layers of outer prepreg cloths, and the outer prepreg cloths of the adjacent layers are connected in a bonding mode;

2. The pipeline local reinforcing structure according to claim 1, which comprises a first layer of inner prepreg cloth, a second layer of inner prepreg cloth, a honeycomb interlayer, a first layer of outer prepreg cloth, a second layer of outer prepreg cloth and a third layer of outer prepreg cloth which are arranged in sequence from inside to outside.

3. The pipeline local reinforcing structure according to claim 1 or 2, wherein the inner prepreg cloth and the outer prepreg cloth are carbon fiber prepreg or glass fiber prepreg.

4. The pipeline local reinforcing structure according to claim 1, wherein the honeycomb sandwich structure comprises a plurality of honeycomb layers, and adjacent honeycomb layers are bonded and fixed.

5. The pipeline local strengthening structure of claim 4, wherein the honeycomb layer is a paper honeycomb layer or a metal honeycomb layer.

6. The pipeline local strengthening structure of claim 4, wherein the thickness of each honeycomb layer is 1 mm-2 mm.

7. A non-metal pipeline, characterized by comprising the local pipeline reinforcing structure as claimed in any one of claims 1 to 6.