Pipe end structure of continuous fiber reinforced composite pipe
By removing the outer and reinforcing layers at the port of a continuous fiber-reinforced composite tube, exposing the inner layer, and injection molding it into an integral structure, the problem of expensive connection methods in existing technologies is solved, a composite interface form is realized, the manufacturing cost of the interface is reduced to a low cost, the manufacturing cost is simplified, and the connection of composite tubes is achieved.
Patent Information
- Application Number
- CN202422345752.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Existing continuous fiber reinforced plastic composite pipe systems have expensive connection methods, making it difficult to achieve low-cost connection interface fabrication.
By removing the outer layer and continuous fiber reinforcement layer at the port of the continuous fiber reinforced composite pipe, the inner layer is exposed, and an injection molded part is used to form an integral structure with the inner layer, thereby achieving hot-melt butt welding and flange connection between composite pipes.
It achieves a tight connection between composite pipes, reduces manufacturing costs, improves the reliability of the interface, has a reasonable structural design, is suitable for various pipe-to-pipe interface forms, forms an integrated and reasonable structure, saves manufacturing costs, is highly practical, and has a simple interface form, making it convenient and quick to manufacture.
Smart Images
Figure CN223635690U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a continuous glass fiber reinforced thermoplastic composite pipe, in particular to a continuous fiber reinforced composite pipe end structure. BACKGROUND
[0002] The continuous glass fiber reinforced thermoplastic pipe system has the characteristics of high heat resistance, high pressure resistance, light weight, non-corrosion, long service life, recyclability and design, greatly reduces the material consumption of manufacturing pipe on the basis of greatly improving product quality and expanding product use, realizes the low-cost production of continuous non-metallic reinforced thermoplastic engineering pipe system, and is the development direction of future pipe large-caliber and high-pressure.
[0003] However, due to the difficulty in manufacturing the composite pipe connecting interface, the continuous fiber reinforced plastic composite pipe system sold on the market at present generally adopts electric melting pipe fitting connection and metal clamping connection, and the two connection methods are relatively expensive. SUMMARY
[0004] In order to overcome the defects of the existing pipe system connection, the utility model provides a continuous fiber reinforced composite pipe end structure.
[0005] The utility model provides the following technical scheme:
[0006] A continuous fiber reinforced composite pipe end structure, specifically: the port of the continuous fiber reinforced composite pipe is removed from the outer layer and the continuous fiber reinforced layer, and the inner layer is exposed; the continuous fiber reinforced layer is removed by more than one section than the outer layer, and the continuous fiber reinforced layer is removed by more than 10-100mm than the outer layer according to the size of the composite pipe caliber; then the composite pipe port stripped of the outer layer, the continuous fiber reinforced layer and the exposed inner layer is formed into a composite pipe port structure by injection molding.
[0007] Further, the total height H of the injection molding part is the wall thickness of a same pipe series polyethylene pipe material specification, and the first injection molding part height H1 is not less than two-thirds of the total height H of the injection molding part.
[0008] Further, the total length L of the injection molding part ranges from 80-300mm according to the size of the composite pipe caliber, the first injection molding part length L1 is half of the total length L of the injection molding part, and the second injection molding part length L2 ranges from 20-80mm according to the size of the composite pipe caliber.
[0009] Further, the injection molding part port structure is suitable for the continuous fiber reinforced composite pipe with a caliber of 1200mm and below.
[0010] Further, the continuous fiber reinforced layer is continuous glass fiber, continuous basalt fiber, continuous steel wire fiber, continuous aramid fiber or continuous ultrahigh molecular weight fiber.
[0011] Further, the outer layer and the inner layer of the composite pipe are made of PE, PP, PERT or PA thermoplastic plastic.
[0012] Compared with the prior art, the continuous fiber reinforced composite pipe end structure has the advantages that: after injection molding, the continuous fiber reinforced composite pipe outer layer, the continuous fiber reinforced layer and the inner layer are formed into an integrated structure with the injection molding part, the interface form of the composite pipe and the flange connection is formed, the structure is reasonable, the production is convenient and fast, the production cost is saved, and the practicality is high. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The utility model discloses a structure schematic diagram.
[0014] In the drawing: 1, outer layer;2, continuous fiber reinforced layer;3, inner layer;
[0015] H, injection molding part total height;
[0016] H1, first injection molding part height;
[0017] L, injection molding part total length;
[0018] L1, first injection molding part length;
[0019] L2, second injection molding part length. EMBODIMENT
[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0021] Please refer to Figure 1 The utility model discloses a continuous fiber reinforced composite pipe end structure, as Figure 1 The port of the continuous fiber reinforced composite pipe is removed to the outer layer 1 and the continuous fiber reinforced layer 2, and the inner layer 3 is exposed. The continuous fiber reinforced layer 2 is removed by more than the outer layer 1, and the continuous fiber reinforced layer 2 is removed by 10-100mm more than the outer layer 1 according to the size of the composite pipe caliber. Then the composite pipe port structure of the outer layer 1, the continuous fiber reinforced layer 2 and the exposed inner layer 3 stripped is formed by the injection molding part 4 injection molding.
[0022] The total height H of the injection molding part is the wall thickness of a polyethylene pipe of the same series of the pipe with a higher specification, and the first injection molding part height H1 is not less than two-thirds of the total height H of the injection molding part.
[0023] The total length L of the injection molding part ranges from 80mm to 300mm according to the diameter of the composite pipe, the first injection molding part length L1 is half of the total length L of the injection molding part, and the second injection molding part length L2 ranges from 20mm to 80mm according to the diameter of the composite pipe.
[0024] The injection molding part port structure is suitable for continuous fiber reinforced composite pipes with a diameter of 1200mm or less.
[0025] The continuous fiber reinforced layer is continuous glass fiber, continuous basalt fiber, continuous steel fiber, continuous aramid fiber or continuous ultra-high molecular weight fiber.
[0026] The outer layer and the inner layer of the composite pipe are made of PE, PP, PERT or PA thermoplastic plastic.
[0027] The continuous fiber reinforced composite pipe end structure of the utility model is integrally formed with the outer layer 1, the continuous fiber reinforced layer 2, the inner layer 3 and the injection molding part 4 after injection molding, and forms the interface form of hot melt butt joint connection and flange connection between the composite pipes.
[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A continuous fiber reinforced composite pipe end structure, characterized by: Specifically, the port of the continuous fiber reinforced composite pipe is removed from the outer layer (1) and the continuous fiber reinforced layer (2) to expose the inner layer (3); the continuous fiber reinforced layer (2) is removed by more than the outer layer (1) by a section, and the continuous fiber reinforced layer (2) is removed by more than the outer layer (1) by 10-100mm according to the size of the composite pipe diameter; then the composite pipe port stripped of the outer layer (1), the continuous fiber reinforced layer (2) and the exposed inner layer (3) is formed into a composite pipe port structure by injection molding of an injection molding part (4).
2. A continuous fiber reinforced composite pipe end structure according to claim 1, characterized in that: The total height H of the injection molding part is the wall thickness of a polyethylene pipe of the same series of pipe specifications, and the first injection molding part height H1 is not less than two-thirds of the total height H of the injection molding part.
3. The continuous fiber reinforced composite pipe end structure of claim 1, wherein: The total length L of the injection molding part ranges from 80-300mm according to the diameter of the composite pipe, the first injection molding part length L1 is half of the total length L of the injection molding part, and the second injection molding part length L2 ranges from 20-80mm according to the diameter of the composite pipe.
4. The continuous fiber reinforced composite pipe end structure of claim 1, wherein: The injection molding part port structure is suitable for continuous fiber reinforced composite pipes with a diameter of 1200mm and below.
5. The continuous fiber reinforced composite pipe end structure of claim 1, wherein: The continuous fiber reinforced layer is continuous glass fiber, continuous basalt fiber, continuous steel fiber, continuous aramid fiber or continuous ultra-high molecular weight fiber.
6. The continuous fiber reinforced composite pipe end structure of claim 1, wherein: The outer layer and the inner layer of the composite pipe are selected from PE, PP, PERT or PA thermoplastic plastics.