CN114719091A - Fiber mesh belt reinforced composite pipe and manufacturing method thereof - Google Patents
Fiber mesh belt reinforced composite pipe and manufacturing method thereof Download PDFInfo
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- CN114719091A CN114719091A CN202210288842.6A CN202210288842A CN114719091A CN 114719091 A CN114719091 A CN 114719091A CN 202210288842 A CN202210288842 A CN 202210288842A CN 114719091 A CN114719091 A CN 114719091A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
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Abstract
The utility model relates to a compound pipe of fibre net area reinforcing relates to the field of compound tubular product of high pressure, it includes interior pipe layer from inside to outside in proper order, fibre reinforcement layer and outer pipe layer, be provided with first net fibrous layer and second net fibrous layer between interior pipe layer and the fibre reinforcement layer, first net fibrous layer, second net fibrous layer is formed by the perpendicular fixed connection of a plurality of horizontal fiber strips and a plurality of longitudinal fiber strips, the length direction of longitudinal fiber strip is the same with the axis direction of interior pipe layer, first net fibrous layer pastes along the circumference of interior pipe layer and covers the round, second net fibrous layer pastes along the circumference of first net fibrous layer and covers the round, first net fibrous layer, one side of second net fibrous layer all overlap joint in the top of opposite side, the interface of second net fibrous layer overlap joint is dislocation arrangement with the interface of first net fibrous layer overlap joint. The application also relates to a manufacturing method of the fiber mesh belt reinforced composite pipe. This application has the effect that makes tubular product be difficult for appearing axial extension.
Description
Technical Field
The application relates to the field of high-pressure composite pipes, in particular to a fiber mesh belt reinforced composite pipe and a manufacturing method thereof.
Background
The pipe transportation is a common transportation mode, the pipe is usually used for transporting gas or liquid, and the pipe is widely applied to the fields of coal mines, buildings, municipal administration and the like.
Reference may be made to chinese patent publication No. CN208651860U, which discloses a fiber reinforced high pressure PVC pipe, which includes an inner pipe layer, a fiber reinforced layer and an outer pipe layer, wherein the fiber reinforced layer is spirally wound on the inner pipe layer and is fixedly connected with the inner pipe layer, and the outer pipe layer is fixedly disposed on the fiber reinforced layer. During the use, the fiber reinforcement layer that sets up between inner tube layer and outer pipe layer has improved the intensity and the bearing capacity of tubular product for tubular product is difficult for taking place to warp at the in-process of transporting high-pressure gas-liquid.
Because the spirally wound fiber reinforced layer is difficult to provide axial tension for the pipe, the problem of axial extension easily occurs in the use process of the pipe, and the use of the pipe is further influenced.
Disclosure of Invention
In order to solve the problem that the pipe is not easy to axially extend, the application provides a fiber mesh belt reinforced composite pipe and a manufacturing method thereof.
In a first aspect, the present application provides a fiber mesh belt reinforced composite pipe, which adopts the following technical scheme:
a fiber mesh belt reinforced composite pipe comprises an inner pipe layer, a fiber reinforced layer and an outer pipe layer, wherein the inner pipe layer is positioned in the outer pipe layer, the fiber reinforced layer is arranged between the inner pipe layer and the outer pipe layer, a first mesh fiber layer, a second mesh fiber layer and a first mesh fiber layer are arranged between the inner pipe layer and the fiber reinforced layer, the second grid fiber layer is formed by vertically and fixedly connecting a plurality of transverse fiber strips and a plurality of longitudinal fiber strips, the length direction of the longitudinal fiber strips is the same as the axis direction of the inner pipe layer, the longitudinal fiber strips are fixedly connected with the inner pipe layer, the first grid fiber layer is pasted with a circle along the circumferential direction of the inner pipe layer, the second grid fiber layer is pasted with a circle along the circumferential direction of the first grid fiber layer, one side of the first grid fiber layer and one side of the second grid fiber layer are all lapped above the other side, and the joint of the lap joint of the second grid fiber layer and the joint of the lap joint of the first grid fiber layer are in staggered arrangement.
Through adopting above-mentioned technical scheme, set up first net fibrous layer and second net fibrous layer between inner tube layer and fiber reinforcement layer, when the composite pipe received axial tension, the longitudinal fibre strip homoenergetic of first net fibrous layer, second net fibrous layer can carry out the tractive to the axial of composite pipe to strengthened composite pipe and received the tensile ability of axis direction, makeed the composite pipe be difficult for taking place the deformation extension in the axis direction.
When the composite pipe is subjected to internal pressure, the transverse fiber strips of the first grid fiber layer and the second grid fiber layer can provide radial tension for the composite pipe, so that the radial bearing capacity of the composite pipe is enhanced, and the composite pipe is not easy to deform radially under the action of the internal pressure.
Axial tension is applied to the composite pipe through longitudinal fiber strips on the first grid fiber layer and the second grid fiber layer, bending resistance of the composite pipe is enhanced, bending deformation of the composite pipe in the axis direction is not prone to occurring, the composite pipe is not prone to appearing in a wavy mode in the using process, and accordingly use of the composite pipe is affected.
The equal overlap joint in one side of first net fibrous layer, second net fibrous layer is on the opposite side for first net fibrous layer, second net fibrous layer all form continuous fibre web after pasting and covering, make the difficult tensile blank area that produces in lap joint department of first net fibrous layer, second net fibrous layer, make composite pipe be difficult to provide the tightening force and take place axial deformation because of the lap joint department of first net fibrous layer, second net fibrous layer.
The joint of the lap joint of the first grid fiber layer and the second grid fiber layer is arranged in a staggered mode, and the second grid fiber layer plays a role in enhancing the lap joint of the first grid fiber layer, so that the composite pipe is not prone to axial deformation.
Optionally, the overlapping length of the first grid fiber layer and the second grid fiber layer is one fourth to one half of the outer diameter of the inner pipe layer.
Through adopting above-mentioned technical scheme, overlap length setting first net fibrous layer, second net fibrous layer's overlap joint between the quarter to the half of inner tube layer external diameter for the overlap joint of first net fibrous layer, second net fibrous layer is in the consumption that can material saving under the prerequisite that satisfies the pulling force requirement.
Optionally, a plurality of the transverse fiber strips are located on the side of the longitudinal fiber strips away from the inner tube layer.
Through adopting above-mentioned technical scheme for vertical fiber strip can laminate completely with interior pipe layer, makes vertical fiber strip be difficult to leave the extension space, also makes horizontal fiber strip and vertical fiber strip be difficult for forming the shearing force in the intersection simultaneously, thereby is difficult for reducing the tensile strength of horizontal fiber strip, vertical fiber strip.
Optionally, the transverse fiber strips of the second grid fiber layer and the transverse fiber strips of the first grid fiber layer are arranged in a staggered manner.
Through adopting above-mentioned technical scheme, through the horizontal ribbon dislocation set with the horizontal ribbon of second net fibrous layer and first net fibrous layer, improved the density that sets up of horizontal ribbon on the composite tube to easily make composite tube axis direction everywhere bearing capacity homoenergetic improve.
Optionally, a third grid fiber layer and a fourth grid fiber layer are arranged between the fiber reinforced layer and the outer pipe layer, the third grid fiber layer and the fourth grid fiber layer are formed by vertically and fixedly connecting a plurality of transverse fiber strips and a plurality of longitudinal fiber strips, the length direction of the longitudinal fiber strips is the same as the axis direction of the inner pipe layer, the longitudinal fiber strips are fixedly connected with the fiber reinforced layer, a circle of the third grid fiber layer is attached along the circumferential direction of the fiber reinforced layer, a circle of the fourth grid fiber layer is attached along the circumferential direction of the third grid fiber layer, one side of the third grid fiber layer and one side of the fourth grid fiber layer are all overlapped above the other side, and an interface at the overlapping position of the fourth grid fiber layer and an interface at the overlapping position of the second grid fiber layer are arranged in a staggered manner.
Through adopting above-mentioned technical scheme, through set up third net fibrous layer and fourth net fibrous layer between fibrous reinforcement layer and outer pipe layer, the ability that the composite pipe resisted axial deformation has further been improved, make the composite pipe all can provide axial tension through vertical fiber strip from inside to outside, and then make the composite pipe all be difficult for taking place axial deformation from inside to outside, and all can improve the bearing capacity of composite pipe through horizontal fiber strip from inside to outside, the interface of fourth net fibrous layer overlap joint department is dislocation set with the interface of third net fibrous layer overlap joint simultaneously, make fourth net fibrous layer play the reinforcing effect to the overlap joint department of third net fibrous layer.
Optionally, the overlapping length of the third mesh fiber layer and the fourth mesh fiber layer is one fourth to one half of the outer diameter of the fiber reinforced layer.
Through adopting above-mentioned technical scheme, overlap length setting third net fibrous layer, fourth net fibrous layer's overlap joint between the quarter to the half of fiber reinforcement layer external diameter for the overlap joint of third net fibrous layer, fourth net fibrous layer can material saving's consumption under the prerequisite that satisfies the pulling force requirement.
Optionally, the third mesh fiber layer and the fourth mesh fiber layer have the same structure as the first mesh fiber layer.
Through adopting above-mentioned technical scheme, because third net fibrous layer, fourth net fibrous layer have with the same structure of first net fibrous layer for third net fibrous layer, fourth net fibrous layer have with the same effect of first net fibrous layer, thereby the vertical ribbon of third net fibrous layer easily laminates with the fibre reinforcement layer completely, and is difficult for leading to self tensile properties to descend because of the shearing force of vertical ribbon, horizontal ribbon intersection.
Optionally, the transverse fiber strips of the third grid fiber layer and the transverse fiber strips of the fourth grid fiber layer are arranged in a staggered manner.
By adopting the technical scheme, the transverse fiber strips on the fourth grid fiber layer and the transverse fiber strips on the third grid fiber layer are arranged in a staggered manner, so that the arrangement density of the transverse fiber strips on the composite pipe is further improved, and the uniformity of the bearing capacity of each part in the axial direction of the composite pipe is further improved.
Optionally, the interface of the third mesh fiber layer lap joint is in dislocation arrangement with the interfaces of the first mesh fiber layer and the second mesh fiber layer lap joint, and the interface of the fourth mesh fiber layer lap joint is also in dislocation arrangement with the interfaces of the first mesh fiber layer and the second mesh fiber layer lap joint.
By adopting the technical scheme, the interfaces at the lap joints of the third grid fiber layer and the fourth grid fiber layer are arranged in a staggered manner with the interfaces at the lap joints of the first grid fiber layer and the second grid fiber layer, so that the tension at the lap joints of the second grid fiber layer and the first grid fiber layer is enhanced by the third grid fiber layer and the fourth grid fiber layer, and the continuity from the first grid fiber layer to the fourth grid fiber layer is further enhanced.
In a second aspect, the present application provides a method for manufacturing a fiber mesh strip reinforced composite pipe, which adopts the following technical scheme:
a method of making a fiber mesh tape reinforced composite pipe comprising the steps of:
manufacturing an inner tube layer: manufacturing the inner pipe layer by using thermoplastic plastics;
pasting a first grid fiber layer: attaching the first grid fiber layer for one circle along the circumferential direction of the outer side wall of the inner pipe layer, overlapping one side of the first grid fiber layer above the other side of the first grid fiber layer, and enabling the length direction of longitudinal fiber strips of the first grid fiber layer to be the same as the axial direction of the inner pipe layer, wherein the longitudinal fiber strips of the first grid fiber layer are fixedly connected with the inner pipe layer;
and (3) coating a second grid fiber layer: attaching the second grid fiber layer for a circle along the circumferential direction of the outer side of the attached first grid fiber layer, overlapping one side of the second grid fiber layer above the other side of the second grid fiber layer, and enabling an interface at the overlapping part of the second grid fiber layer and an interface at the overlapping part of the first grid fiber layer to be in a staggered state;
manufacturing a fiber reinforced layer: spirally winding the fiber reinforced layer on the second grid fiber layer after being pasted;
manufacturing an outer tube layer: and manufacturing an outer pipe layer by adopting thermoplastic plastics on the outer side of the fiber reinforced layer, thereby completing the manufacture of the composite pipe.
By adopting the technical scheme, when the composite pipe is manufactured, firstly, the inner pipe layer is manufactured by adopting thermoplastic plastics, then the first grid fiber layer is pasted and covered on the outer side wall of the inner pipe layer, one side of the first grid fiber layer is lapped and connected on the other side, in the pasting and covering process, the length direction of the longitudinal fiber strips of the first grid fiber layer is the same as the axial direction of the inner pipe layer and is fixedly connected with the inner pipe layer, then the second grid fiber layer is pasted and covered on the outer side of the first grid fiber layer, one side of the second grid fiber layer is lapped and connected on the other side, simultaneously, the interface of the lapping part of the second grid fiber layer and the interface of the lapping part of the first grid fiber layer are in a state, then the staggered fiber reinforced layer is spirally wound on the outer side of the second grid fiber layer, and the outer pipe layer is manufactured by adopting thermoplastic plastics outside the fiber reinforced layer, thereby completing the manufacturing of the composite pipe, the capacity of resisting axial deformation, radial deformation and bending deformation of the composite pipe is improved through the first grid fiber layer and the second grid fiber layer, so that the composite pipe is not easy to axially extend, radially deform and bend.
In summary, the present application includes at least one of the following beneficial technical effects:
the composite pipe is not easy to axially extend due to the axial tension generated on the composite pipe by the longitudinal fiber strips on the first grid fiber layer, the second grid fiber layer, the third grid fiber layer and the fourth grid fiber layer;
the radial tension on the composite pipe is generated by the transverse fiber strips on the first grid fiber layer, the second grid fiber layer, the third grid fiber layer and the fourth grid fiber layer, so that the bearing capacity of the composite pipe is improved;
through the axial tension of the longitudinal fiber strips on the first grid fiber layer, the second grid fiber layer, the third grid fiber layer and the fourth grid fiber layer on the composite pipe, the composite pipe is not easy to bend and deform along the axis direction.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is a schematic view for explaining the structure of a first mesh fiber layer and a second mesh fiber layer;
FIG. 3 is a schematic view for explaining the structure of a third mesh fiber layer and a fourth mesh fiber layer;
fig. 4 is a schematic structural diagram for explaining the staggered arrangement of the joints at the lap joints of the first mesh fiber layer, the second mesh fiber layer, the third mesh fiber layer and the fourth mesh fiber layer.
Description of reference numerals:
1. an inner tube layer; 2. a first mesh fiber layer; 21. transverse fiber strips; 22. longitudinal fiber strips; 3. a second mesh fiber layer; 4. a fiber-reinforced layer; 5. a third mesh fiber layer; 6. a fourth mesh fiber layer; 7. an outer tube layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a fiber grid belt reinforced composite pipe. Referring to fig. 1, the fiber mesh belt reinforced composite pipe comprises an inner pipe layer 1, a fiber reinforced layer 4 and an outer pipe layer 7, wherein the inner pipe layer 1 is positioned in the outer pipe layer 7, the fiber reinforced layer 4 is positioned between the inner pipe layer 1 and the outer pipe layer 7, a first mesh fiber layer 2 and a second mesh fiber layer 3 are arranged between the inner pipe layer 1 and the fiber reinforced layer 4, and a third mesh fiber layer 5 and a fourth mesh fiber layer 6 are arranged between the outer pipe and the fiber reinforced layer 4.
During the use, provide the straining force to the composite tube through first net fibrous layer 2, second net fibrous layer 3, third net fibrous layer 5 and fourth net fibrous layer 6 for the composite tube is difficult for taking place axial deformation when receiving axial external force, and has further improved the bearing capacity and the bending resistance of composite tube.
Referring to fig. 2 and 3, the first grid fiber layer 2, the second grid fiber layer 3, the third grid fiber layer 5 and the fourth grid fiber layer 6 are all in a net shape and are formed by vertically and fixedly connecting a plurality of transverse fiber strips 21 and a plurality of longitudinal fiber strips 22.
Referring to fig. 2 and 3, the longitudinal fiber strips 22 of the first grid fiber layer 2, the second grid fiber layer 3, the third grid fiber layer 5 and the fourth grid fiber layer 6 have the same length direction as the axial direction of the inner tube layer 1, and the transverse fiber strips 21 are located on the side of the longitudinal fiber strips 22 away from the inner tube layer 1.
Referring to fig. 2 and 4, the first grid fiber layer 2 is attached to the inner pipe layer 1 in a circle along the circumference of the inner pipe layer 1, the longitudinal fiber strips 22 of the first grid fiber layer 2 are fixedly connected with the inner pipe layer 1, one side of the first grid fiber layer 2 is overlapped above the other side, and the overlapping length of the overlapping part is one fourth to one half of the outer diameter of the inner pipe layer 1.
Referring to fig. 2 and 4, the second mesh fiber layer 3 is attached to the first mesh fiber layer 2 in a circle along the circumference direction, one side of the second mesh fiber layer 3 is overlapped above the other side, and the overlapping length of the overlapping part is one fourth to one half of the outer diameter of the inner pipe layer 1.
Referring to fig. 4, the joint at the lap joint of the second grid fiber layer 3 and the joint at the lap joint of the first grid fiber layer 2 are arranged in a 180-degree staggered manner. The transverse fiber strips 21 of the second grid fiber layer 3 are arranged in a staggered way with the transverse fiber strips 21 of the first grid fiber layer 2.
During the use, when the compound pipe received interior pressure, first net fibrous layer 2, second net fibrous layer 3 all provided the tension to the compound pipe for the difficult axial deformation of taking place of compound pipe extends, has also strengthened the bearing capacity and the bending resistance of compound pipe simultaneously, makes the difficult radial deformation and the bending deformation of taking place of compound pipe.
Referring to fig. 3 and 4, the third lattice fiber layer 5 is attached to the fiber reinforced layer 4 in a circle along the circumference direction of the fiber reinforced layer 4, the longitudinal fiber strips 22 of the third lattice fiber layer 5 are fixedly connected with the fiber reinforced layer 4, one side of the third lattice fiber layer 5 is overlapped above the other side, and the overlapping length of the overlapping part is one fourth to one half of the outer diameter of the fiber reinforced layer 4.
Referring to fig. 3 and 4, the fourth mesh fibrous layer 6 is attached to the third mesh fibrous layer 5 in a circle along the circumference thereof, one side of the fourth mesh fibrous layer 6 is overlapped above the other side thereof, and the overlapping length of the overlapping portion is one fourth to one half of the outer diameter of the fiber reinforced layer 4.
Referring to fig. 4, the joint at the overlapping position of the fourth grid fiber layer 6 and the joint at the overlapping position of the third grid fiber layer 5 are arranged in a staggered manner at 180 degrees. The transverse fiber strips 21 of the fourth grid fiber layer 6 and the transverse fiber strips 21 of the third grid fiber layer 5 are arranged in a staggered mode. The joints at the lap joints of the third grid fiber layer 5 and the fourth grid fiber layer 6 are arranged in a 90-degree staggered manner with the joints at the lap joints of the first grid fiber layer 2 and the second grid fiber layer 3.
During the use, when the composite pipe received interior pressure, third net fibrous layer 5, fourth net fibrous layer 6 provided the straining force to the composite pipe with first net fibrous layer 2, second net fibrous layer 3 jointly, further improved the performance that the composite pipe resisted axial deformation for the composite pipe is difficult along axial extension, has further strengthened the bearing capacity and the bending resistance of composite pipe simultaneously, makes the composite pipe be difficult for taking place radial deformation and bending deformation more.
The implementation principle of the fiber mesh belt reinforced composite pipe in the embodiment of the application is as follows: when in use, the first grid fiber layer 2 and the second grid fiber layer 3 are staggered by 180 degrees and are pasted on the inner tube layer 1, the third grid fiber layer 5 and the fourth grid fiber layer 6 are staggered by 180 degrees and are pasted on the fiber reinforced layer 4, meanwhile, the joint at the lap joint of the first grid fiber layer 2 and the second grid fiber layer 3 and the joint at the lap joint of the third grid fiber layer 5 and the fourth grid fiber layer 6 are staggered by 90 degrees, when the composite pipe is subjected to axial tension, the first grid fiber layer 2, the second grid fiber layer 3, the third grid fiber layer 5 and the fourth grid fiber layer 6 jointly provide axial tension for the composite pipe, so that the composite pipe is not easy to deform axially, meanwhile, the first grid fiber layer 2, the second grid fiber layer 3, the third grid fiber layer 5 and the fourth grid fiber layer 6 all enhance the bearing capacity and the bending resistance of the composite pipe, so that the composite pipe is not easy to deform radially and bend.
The embodiment of the application also discloses a manufacturing method of the fiber mesh belt reinforced composite pipe, which comprises the following steps:
manufacturing the inner tube layer 1: manufacturing the inner pipe layer 1 from thermoplastic;
coating a first grid fiber layer 2: attaching the first mesh fiber layer 2 in a circle along the circumferential direction of the outer side wall of the inner pipe layer 1, enabling the length direction of the longitudinal fiber strips 22 of the first mesh fiber layer 2 to be the same as the axial direction of the inner pipe layer 1, enabling the longitudinal fiber strips 22 to be fixedly connected with the outer side wall of the inner pipe layer 1, overlapping one side of the first mesh fiber layer 2 above the other side, and enabling the overlapping length of the overlapping part to be one quarter to one half of the outer diameter of the inner pipe layer 1;
coating a second grid fiber layer 3: attaching the second mesh fiber layer 3 in a circle along the circumferential direction of the outer side of the first mesh fiber layer 2 after the attachment is completed, overlapping one side of the second mesh fiber layer 3 above the other side, wherein the overlapping length of the overlapping part is one quarter to one half of the outer diameter of the inner pipe layer 1, the length direction of the longitudinal fiber strips 22 of the second mesh fiber layer 3 is the same as the length direction of the longitudinal fiber strips 22 of the first mesh fiber layer 2, the transverse fiber strips 21 of the second mesh fiber layer 3 are arranged in a staggered manner with the transverse fiber strips 21 of the first mesh fiber layer 2, and meanwhile, the joint of the overlapping part of the second mesh fiber layer 3 and the joint of the overlapping part of the first mesh fiber layer 2 are arranged in a staggered manner of 180 degrees;
manufacturing the fiber-reinforced layer 4: spirally winding the fiber reinforced layer 4 on the second grid fiber layer 3 which is completely pasted;
coating a third grid fiber layer 5: attaching the third mesh fiber layer 5 in a circle along the circumferential direction of the outer side of the fiber reinforced layer 4, so that the length direction of the longitudinal fiber strips 22 of the third mesh fiber layer 5 is the same as the axial direction of the fiber reinforced layer 4, the longitudinal fiber strips 22 are fixedly connected with the outer side of the fiber reinforced layer 4, one side of the third mesh fiber layer 5 is lapped above the other side, and the overlapping length of the lapping part is one quarter to one half of the outer diameter of the fiber reinforced layer 4;
and (3) coating a fourth grid fiber layer 6: a reticular fourth grid fiber layer 6 is pasted and covered for a circle along the circumferential direction of the outer side of the pasted third grid fiber layer 5, so that one side of the fourth grid fiber layer 6 is lapped and connected above the other side, and the fiber reinforced layer 4 is one fourth to one half of the outer diameter of the fiber reinforced layer 4, so that the length direction of the longitudinal fiber strips 22 of the fourth grid fiber layer 6 is the same as the length direction of the longitudinal fiber strips 22 of the third grid fiber layer 5, and the transverse fiber strips 21 of the fourth grid fiber layer 6 and the transverse fiber strips 21 of the third grid fiber layer 5 are arranged in a staggered way, meanwhile, the joint at the lap joint of the fourth grid fiber layer 6 and the joint at the lap joint of the third grid fiber layer 5 are arranged in a 180-degree staggered manner, and the joints at the lap joints of the third grid fiber layer 5 and the fourth grid fiber layer 6 and the joints at the lap joints of the first grid fiber layer 2 and the second grid fiber layer 3 are arranged in a 90-degree staggered manner;
manufacturing the outer tube layer 7: the outer tube layer 7 is manufactured from thermoplastic on the outside of the fourth layer 6 of lattice fibres, whereby the manufacture of the composite tube is completed.
When manufacturing, an inner tube layer 1 is made of thermoplastic plastics, a first grid fiber layer 2 and a second grid fiber layer 3 are sequentially pasted on the inner tube layer 1, the joint of the first grid fiber layer 2 and the second grid fiber layer 3 is arranged in an angle of 180 degrees, then a fiber reinforced layer 4 is spirally wound on the second grid fiber layer 3, a third grid fiber layer 5 and a fourth grid fiber layer 6 are pasted on the fiber reinforced layer 4, the joint of the third grid fiber layer 5 and the fourth grid fiber layer 6 is arranged in an angle of 180 degrees, the joint of the third grid fiber layer 5 and the fourth grid fiber layer 6 is staggered in an angle of 90 degrees with the joint of the first grid fiber layer 2 and the second grid fiber layer 3, then an outer tube layer 7 is made of thermoplastic plastics on the outer side of the fourth grid fiber layer 6, thereby completing the manufacturing of the composite tube, the first grid fiber layer 2, the second grid fiber layer 3, the third grid fiber layer 5 and the fourth grid fiber layer 6 are used for enhancing the axial tensile, radial compressive and bending resistance of the composite pipe, so that the composite pipe is not easy to axially elongate, radially deform and axially bend in the using process.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A fiber mesh belt reinforced composite pipe comprises an inner pipe layer (1), a fiber reinforced layer (4) and an outer pipe layer (7), wherein the inner pipe layer (1) is positioned in the outer pipe layer (7), and the fiber reinforced layer (4) is arranged between the inner pipe layer (1) and the outer pipe layer (7), and is characterized in that a first mesh fiber layer (2) and a second mesh fiber layer (3) are arranged between the inner pipe layer (1) and the fiber reinforced layer (4), the first mesh fiber layer (2) and the second mesh fiber layer (3) are respectively formed by vertically and fixedly connecting a plurality of transverse fiber strips (21) and a plurality of longitudinal fiber strips (22), the length direction of the longitudinal fiber strips (22) is the same as the axial direction of the inner pipe layer (1), the longitudinal fiber strips (22) are fixedly connected with the inner pipe layer (1), the first mesh fiber layer (2) is attached to the inner pipe layer (1) in a circle along the circumferential direction, the second grid fiber layer (3) is pasted along the circumference of first grid fiber layer (2) and is covered a round, and the equal overlap joint in the top of opposite side in one side of first grid fiber layer (2), second grid fiber layer (3), and the interface of second grid fiber layer (3) overlap joint department is dislocation arrangement with the interface of first grid fiber layer (2) overlap joint department.
2. A fibre mesh strip reinforced composite pipe according to claim 1, characterized in that the overlap of the first (2) and second (3) mesh fibre layers is a quarter to a half of the outer diameter of the inner pipe layer (1).
3. A fibre mesh strip reinforced composite pipe according to claim 1, characterized in that several of the transverse fibre strips (21) are located on the side of the longitudinal fibre strips (22) facing away from the inner pipe layer (1).
4. A fibre mesh tape reinforced composite pipe according to claim 1, characterized in that the transverse fibre strips (21) of the second mesh fibre layer (3) are arranged offset to the transverse fibre strips (21) of the first mesh fibre layer (2).
5. The fiber mesh strip reinforced composite pipe according to claim 3, wherein a third mesh fiber layer (5) and a fourth mesh fiber layer (6) are arranged between the fiber reinforced layer (4) and the outer pipe layer (7), the third mesh fiber layer (5) and the fourth mesh fiber layer (6) are formed by vertically and fixedly connecting a plurality of transverse fiber strips (21) and a plurality of longitudinal fiber strips (22), the longitudinal fiber strips (22) have the same length direction as the axial direction of the inner pipe layer (1), the longitudinal fiber strips (22) are fixedly connected with the fiber reinforced layer (4), the third mesh fiber layer (5) is coated with a circle along the circumferential direction of the fiber reinforced layer (4), the fourth mesh fiber layer (6) is coated with a circle along the circumferential direction of the third mesh fiber layer (5), and one sides of the third mesh fiber layer (5) and the fourth mesh fiber layer (6) are overlapped above the other side, the joint of the lap joint of the fourth grid fiber layer (6) and the joint of the lap joint of the second grid fiber layer (3) are arranged in a staggered mode.
6. A fibre mesh reinforced composite pipe according to claim 5, characterized in that the overlap length of the overlap of the third mesh fibre layer (5) and the fourth mesh fibre layer (6) is one quarter to one half of the outer diameter of the fibre reinforced layer (4).
7. A fibre mesh reinforced composite pipe according to claim 5, characterized in that the structure of the third and fourth mesh fibre layer (5, 6) is the same as the structure of the first mesh fibre layer (2).
8. A fibre mesh reinforced composite pipe according to claim 5, characterized in that the transverse fibre strips (21) of the third mesh fibre layer (5) are arranged offset to the transverse fibre strips (21) of the fourth mesh fibre layer (6).
9. The fiber mesh belt reinforced composite pipe according to claim 5, wherein the joints at the lap joint of the third mesh fiber layer (5) and the joints at the lap joint of the first mesh fiber layer (2) and the second mesh fiber layer (3) are arranged in a staggered manner, and the joints at the lap joint of the fourth mesh fiber layer (6) and the joints at the lap joint of the first mesh fiber layer (2) and the second mesh fiber layer (3) are also arranged in a staggered manner.
10. A method of manufacturing a composite pipe according to any of claims 1-9, comprising the steps of:
production of the inner tube layer (1): manufacturing the inner pipe layer (1) by using thermoplastic plastics;
applying a first grid fiber layer (2): the first grid fiber layer (2) is attached to the outer side wall of the inner pipe layer (1) in a circle along the circumferential direction, one side of the first grid fiber layer (2) is in lap joint with the upper side of the other side of the first grid fiber layer, meanwhile, the length direction of longitudinal fiber strips (22) of the first grid fiber layer (2) is the same as the axial direction of the inner pipe layer (1), and the longitudinal fiber strips (22) of the first grid fiber layer (2) are fixedly connected with the inner pipe layer (1);
applying a second grid fiber layer (3): attaching the second grid fiber layer (3) for a circle along the circumferential direction of the outer side of the first grid fiber layer (2) after the attachment, overlapping one side of the second grid fiber layer (3) above the other side, and simultaneously enabling an interface at the overlapping part of the second grid fiber layer (3) and an interface at the overlapping part of the first grid fiber layer (2) to be in a staggered state;
production of a fibrous reinforcement layer (4): spirally winding the fiber reinforced layer (4) on the second grid fiber layer (3) which is completely pasted;
production of the outer tube layer (7): and manufacturing an outer pipe layer (7) by adopting thermoplastic plastics on the outer side of the fiber reinforced layer (4) so as to finish the manufacturing of the composite pipe.
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| CN202210288842.6A CN114719091A (en) | 2022-03-23 | 2022-03-23 | Fiber mesh belt reinforced composite pipe and manufacturing method thereof |
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