Pressure-resistant high-toughness glass fiber reinforced plastic composite pipe
The FRP composite pipe design addresses brittleness by incorporating an inner positioning frame, positioning rods, and anti-torsion rings to enhance structural strength and toughness, improving resistance to torsion and deflection, thereby enhancing durability.
Patent Information
- Application Number
- CN202421146762.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-24
AI Technical Summary
Existing FRP composite pipes are structurally brittle due to low toughness, leading to cracks and inadequate strength over time.
A pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe design featuring an inner positioning frame, outer skin, positioning rods, anti-torsion rings, and groove structures to enhance structural strength and toughness through combined connections and anti-torsion effects.
The design improves structural strength and toughness by resisting lateral forces and reducing internal impacts, enhancing the pipe's resistance to torsion and deflection, thus improving durability and reliability.
Smart Images
Figure CN222229733U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glass fiber reinforced plastic composite pipes, in particular to a pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe. Background Art
[0002] FRP pipe is a lightweight, high-strength, corrosion-resistant non-metallic pipe. It is made of glass fiber with a resin matrix, which is wound layer by layer on a rotating core mold according to the process requirements, and quartz sand is evenly spread between the fibers at a long distance as a sand layer. Its pipe wall structure is reasonable and advanced, which can give full play to the role of the material. Under the premise of meeting the use strength, the rigidity is improved, and the stability and reliability of the product are guaranteed. FRP sand-filled pipe is accepted by the majority of users for its excellent chemical corrosion resistance, light weight and high strength, no scaling, strong earthquake resistance, long service life compared with ordinary steel pipes, low comprehensive cost, quick installation, safety and reliability, etc.
[0003] However, existing FRP composite pipes are generally very hard, which makes the pipes as a whole relatively brittle. After long-term use, cracks will occur, and the toughness and strength are not high enough. Utility Model Content
[0004] Technical issues solved
[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a pressure-resistant and high-toughness FRP composite pipe, which can effectively solve the problem that the FRP composite pipe in the prior art has high structural strength but lacks toughness, resulting in brittleness.
[0006] Technical Solution
[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0008] The utility model provides a pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe, comprising an inner pipe; an inner positioning frame is fixed to the outer side of the inner positioning frame, an outer skin is fixed to the outer side of the outer skin, a positioning rod is fixed to the outer side of the outer skin, an anti-torsion ring is arranged in the middle of the positioning rod, outer disks are fixed on both sides of the positioning rod, a plurality of groups of positioning rods are equidistantly arranged on the outer side of the outer skin, a plurality of groups of anti-torsion rings are equidistantly arranged in the positioning rod, and a side groove is opened through the outer side of each group of the anti-torsion rings, a positioning hole is opened in the middle, and the positioning rod is arranged in the positioning hole and the side groove.
[0009] Furthermore, an inner groove is provided on the inner wall of the inner tube, and the inner groove is spiral, and a groove structure is provided on the outer wall of the inner tube and the inner wall of the outer skin, the inner positioning frame is a cross structure, and the upper and lower ends of the inner positioning frame are fixed in the groove structures at the upper and lower ends.
[0010] Furthermore, a plurality of groups of inner positioning frames are equidistantly arranged between the inner tube and the outer skin.
[0011] Furthermore, both ends of each group of positioning rods are fixed on the side walls of the outer disk.
[0012] Furthermore, each group of the anti-twist rings is fixed to the outside of the outer skin by bonding.
[0013] Furthermore, the inner diameters of the outer disks on both sides are the same as the inner diameter of the inner tube.
[0014] Beneficial Effects
[0015] Compared with the known public technology, the technical solution provided by the utility model has the following beneficial effects:
[0016] 1. The utility model adopts a method of connecting and fixing the inner positioning frame with two groups of structures by setting up a combined structure of inner tube-inner positioning frame-outer skin. The user can make a combined connection through the inner positioning frame structure. Since there are multiple groups, the lateral torsional force from the outside to the inside can be effectively resisted, the structural strength and toughness can be improved, and the impact on the internal structural parts can be reduced.
[0017] 2. In this device, by arranging multiple groups of positioning rods and anti-torsion ring structures at the outer skin, the structural strength of the outer side of the outer skin and the two sides of the outer disk can be effectively improved. The multiple groups of anti-torsion ring structures can be fixed and clamped with the positioning rod structure, and limit the lateral deflection / torsion of each group of positioning rods, thereby achieving an anti-torsion effect, and cooperating with the internal positioning frame structure to enhance the structural strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 It is a schematic diagram of the structure of the inner tube in the utility model;
[0021] Figure 3 It is a schematic diagram of the structure of the anti-torsion ring in the utility model;
[0022] Figure 4 It is a schematic diagram of the structure of the inner tube and the outer skin in the utility model.
[0023] The numbers in the figure represent: 1, inner tube; 11, inner groove; 2, inner positioning frame; 3, outer skin; 4, anti-torsion ring; 41, side groove; 42, positioning hole; 5, positioning rod; 6, outer disk. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The utility model is further described below in conjunction with embodiments.
[0026] Embodiment: A high-toughness glass fiber reinforced plastic composite pipe with high pressure resistance, Figure 1 -Attached Figure 4 , comprising an inner tube 1; an inner positioning frame 2 is fixed to the outer side of the inner positioning frame 2, an outer skin 3 is fixed to the outer side of the outer skin 3, a positioning rod 5 is fixed to the outer side of the outer skin 3, an anti-torsion ring 4 is arranged in the middle of the positioning rod 5, and outer disks 6 are fixed on both sides of the positioning rod 5, a plurality of groups of positioning rods 5 are equidistantly arranged on the outer side of the outer skin 3, a plurality of groups of anti-torsion rings 4 are equidistantly arranged in the positioning rod 5, and a side groove 41 is penetrated through the outer side of each group of anti-torsion rings 4, a positioning hole 42 is opened in the middle, and the positioning rod 5 is arranged in the positioning hole 42 and the side groove 41; through the combination structure of the inner tube 1-inner positioning frame 2-outer skin 3, the inner positioning frame 2 is connected and fixed with the two groups of structures, and the user can make a combined connection through the inner positioning frame 2 structure, and because there are multiple groups, the lateral torsional force from the outside to the inside can be effectively resisted, the structural strength and toughness are improved, and the impact on the internal structural parts is reduced.
[0027] An inner groove 11 is provided on the inner wall of the inner tube 1, and the inner groove 11 is spiral, and a groove structure is provided on the outer wall of the inner tube 1 and the inner wall of the outer skin 3, the inner positioning frame 2 is a cross structure, and the upper and lower ends of the inner positioning frame 2 are fixed in the groove structures at the upper and lower ends; multiple groups of inner positioning frames 2 are equidistantly arranged between the inner tube 1 and the outer skin 3; the two ends of each group of positioning rods 5 are fixed on the side walls of the outer disk 6; each group of anti-torsion rings 4 are fixed to the outer side of the outer skin 3 by bonding; the inner diameter of the outer disk 6 on both sides is the same as the inner diameter of the inner tube 1; by arranging multiple groups of positioning rods 5 and anti-torsion ring 4 structures at the outer skin 3, the structural strength of the outer side of the outer skin 3 and the two sides of the outer disk 6 can be effectively improved, and the multiple groups of anti-torsion ring 4 structures can be fixed and clamped with the positioning rod 5 structure, and limit the lateral deflection / torsion of each group of positioning rods 5, thereby achieving the anti-torsion effect, and cooperating with the internal inner positioning frame 2 structure, the effect of strengthening the structural strength is achieved.
[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.
Claims
1. A high-toughness, pressure-resistant glass fiber reinforced plastic composite pipe, characterized in that: The invention comprises an inner tube (1); an inner positioning frame (2) is fixed on the outer side of the inner tube (1); an outer skin (3) is fixed on the outer side of the inner positioning frame (2); a positioning rod (5) is fixed on the outer side of the outer skin (3); an anti-torsion ring (4) is arranged in the middle of the positioning rod (5); outer disks (6) are fixed on both sides of the positioning rod (5), the inner tube (1) and the outer skin (3); a plurality of groups of the positioning rod (5) are equidistantly arranged on the outer side of the outer skin (3); a plurality of groups of anti-torsion rings (4) are equidistantly arranged on the positioning rod (5); a side groove (41) is penetrated through the outer side of each group of the anti-torsion rings (4); a positioning hole (42) is arranged in the middle; the positioning rod (5) is arranged in the positioning hole (42) and the side groove (41).
2. The pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe according to claim 1, characterized in that: An inner groove (11) is provided on the inner wall of the inner tube (1), and the inner groove (11) is spiral-shaped. The outer wall of the inner tube (1) and the inner wall of the outer skin (3) are both provided with groove structures. The inner positioning frame (2) is a cross structure, and the upper and lower ends of the inner positioning frame (2) are both fixed in the groove structures at the upper and lower ends.
3. The pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe according to claim 1, characterized in that: The inner positioning frames (2) are arranged in multiple groups at equal intervals between the inner tube (1) and the outer skin (3).
4. The pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe according to claim 1, characterized in that: Both ends of each group of positioning rods (5) are fixed on the side walls of the outer plate (6).
5. The pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe according to claim 4, characterized in that: Each group of anti-twist rings (4) is fixed to the outside of the outer skin (3) by bonding.
6. The pressure-resistant and high-toughness glass fiber reinforced plastic composite pipe according to claim 1, characterized in that: The inner diameters of the outer disks (6) on both sides are the same as the inner diameter of the inner tube (1).