Gradient aerogel enhanced multi-layer composite flexible pipeline
By incorporating a gradient aerogel layer and a bidirectional winding reinforcement layer into the inner layer of the pipe, the limitations of existing pipe materials in terms of thermal insulation performance and compressive strength are overcome, achieving efficient thermal insulation and pressure-resistant flexibility, thereby improving the pipe's adaptability and service life in complex environments.
Patent Information
- Application Number
- CN202520742948.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-04-18
AI Technical Summary
Existing pipe insulation materials have limitations in terms of insulation performance, compressive strength, and cost, making it difficult to meet the requirements for efficient insulation and pressure resistance in complex environments.
A gradient aerogel layer is coated on the surface of the first reinforcing layer to form a flexible strip. The bidirectional winding reinforcing layer design enhances the protective effect of the inner thermoplastic tube. Combined with the outer protective tube, the overall thermal insulation and pressure resistance of the pipeline are improved.
It improves the pipeline's high-efficiency heat insulation, pressure resistance, and flexibility, enhances its adaptability in complex environments, and extends its service life and reliability.
Smart Images
Figure CN223806732U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of composite flexible pipe, particularly to a gradient aerogel reinforced multilayer composite flexible pipe. BACKGROUND
[0002] In the field of pipeline, aerogel thermal insulation material is favored because of its excellent thermal insulation performance, and is suitable for fields such as offshore extraction platform, submarine oil and gas pipeline, long-distance oil and gas pipeline, geothermal well, chemical reactor connecting pipeline, etc., effectively reducing the heat loss of high-temperature pipeline and reducing enterprise energy consumption.
[0003] At present, the commonly used thermal insulation materials for pipeline mainly include rock wool, asbestos, glass wool, aluminum silicate products, perlite, foam rubber and plastic, and polyurethane rigid foam plastic, etc. Although these materials can meet the thermal insulation requirements to some extent, they have their own limitations. For example, foam rubber and plastic pipe shell has good thermal insulation, small bulk density and easy installation, but has small compressive strength. Although polyurethane rigid foam plastic has excellent thermal insulation performance, it has high cost and is easy to absorb water, affecting the service life. UTILITY MODEL CONTENT
[0004] To solve the above technical problems, the utility model provides a gradient aerogel layer coated on the surface of the first reinforcing layer, so that a flexible strip material is formed, thereby improving the protection effect of the inner thermoplastic pipe. The first reinforcing layer and the second reinforcing layer form a bidirectional winding reinforcing synergistic design on both sides of the gradient aerogel layer, further enhancing the use strength of the inner thermoplastic pipe and the adaptability to complex environment, and improving the overall high-efficiency thermal insulation, pressure-resistant flexibility effect of the pipeline.
[0005] The utility model discloses a gradient aerogel reinforced multilayer composite flexible pipe, which comprises an inner thermoplastic pipe and a first reinforcing layer, and the first reinforcing layer is arranged on the outer side wall of the inner thermoplastic pipe. It further comprises a gradient aerogel layer, a second reinforcing layer and an outer protective pipe. The gradient aerogel layer is arranged on the outer side wall of the first reinforcing layer, the second reinforcing layer is arranged on the outer side wall of the gradient aerogel layer, and the outer protective pipe is arranged on the outer side wall of the second reinforcing layer. The gradient aerogel layer is composed of flexible aerogel strip material. The first reinforcing layer is composed of continuous fibers with a positive spiral angle of θ1=50°-70°. The second reinforcing layer is composed of continuous fibers with a reverse spiral angle of θ2=θ1±(20°-40°). By arranging the first reinforcing layer on the outer surface of the inner thermoplastic pipe, and then coating the gradient aerogel layer on the surface of the first reinforcing layer to form a flexible strip material, the protection effect of the inner thermoplastic pipe is improved. At the same time, the use of the second reinforcing layer and the outer protective pipe enables the first reinforcing layer and the second reinforcing layer to form a bidirectional winding reinforcing synergistic design on both sides of the gradient aerogel layer, further enhancing the use strength of the inner thermoplastic pipe and the adaptability to complex environment, and improving the overall high-efficiency thermal insulation, pressure-resistant flexibility effect of the pipeline.
[0006] Preferably, the base material of the gradient aerogel layer flexible aerogel belt material is glass fiber cloth or polyimide film, and the aerogel coating thickness is 0.5-3.0 mm; the use effect is improved.
[0007] Preferably, the thermal conductivity of the gradient aerogel layer is ≤0.020 W / (m·K), the porosity is ≥97%, the interfacial peeling strength is ≥50 N / cm, and the dynamic bending fatigue life is ≥5×10 6 ; the service life and use reliability of the multi-layer composite flexible pipeline are improved.
[0008] Preferably, the inner layer thermoplastic pipe is made of a high-temperature-resistant polymer, and the long-term temperature resistance is ≥95℃; the heat resistance is improved, and the service life is improved.
[0009] Preferably, the outer layer protective pipe is made of a wear-resistant and UV-resistant material, and is provided with a functional coating on the surface; the protection effect on the second reinforcing layer is improved, and the service life of the multi-layer composite flexible pipeline is improved.
[0010] Preferably, the inner layer thermoplastic pipe, the first reinforcing layer, the gradient aerogel layer, the second reinforcing layer and the outer layer protective pipe are prepared and processed by a continuous production process; the processing efficiency is improved, the composite reliability between different materials is improved, and the processing quality is improved.
[0011] Compared with the prior art, the utility model has the advantages that: the inner layer thermoplastic pipe is provided with the first reinforcing layer on the outer surface, then the gradient aerogel layer is coated on the surface of the first reinforcing layer, so that the flexible belt material is formed, thereby improving the protection effect on the inner layer thermoplastic pipe, and cooperating with the use of the second reinforcing layer and the outer layer protective pipe, the first reinforcing layer and the second reinforcing layer form a bidirectional winding reinforcing cooperative design on both sides of the gradient aerogel layer, further enhancing the use strength of the inner layer thermoplastic pipe and the adaptability to complex environments, and improving the efficient heat insulation, pressure-resistant and flexible effect of the pipeline as a whole. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is the axonometric structure schematic view of the utility model;
[0013] Figure 2 is the axonometric structure schematic view of the connection of the second reinforcing layer and the gradient aerogel layer;
[0014] Figure 3 is the axonometric structure schematic view of the connection of the inner layer thermoplastic pipe and the outer layer protective pipe;
[0015] Figure 4 is the axonometric structure schematic view of the connection of the inner layer thermoplastic pipe and the first reinforcing layer.
[0016] The following labels are used in the attached diagram: 1. Inner thermoplastic tube; 2. First reinforcing layer; 3. Gradient aerogel layer; 4. Second reinforcing layer; 5. Outer protective tube. Detailed Implementation
[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0018] Example 1
[0019] like Figures 1 to 4 As shown, this utility model discloses a gradient aerogel-reinforced multilayer composite flexible pipe, comprising an inner thermoplastic tube 1 and a first reinforcing layer 2, the first reinforcing layer 2 being disposed on the outer wall of the inner thermoplastic tube 1; it also includes a gradient aerogel layer 3, a second reinforcing layer 4, and an outer protective tube 5. The gradient aerogel layer 3 is disposed on the outer wall of the first reinforcing layer 2, the second reinforcing layer 4 is disposed on the outer wall of the gradient aerogel layer 3, and the outer protective tube 5 is disposed on the outer wall of the second reinforcing layer 4. The gradient aerogel layer 3 is composed of flexible aerogel tape material, the first reinforcing layer 2 is composed of continuous fibers wound in the forward direction at a helical angle of θ1 = 50° to 70°, and the second reinforcing layer 4 is composed of continuous fibers wound in the reverse direction at a helical angle of θ2 = θ1 ± (20° to 40°).
[0020] like Figure 2 As shown, the substrate of the gradient aerogel layer 3 flexible aerogel tape material is glass fiber cloth or polyimide film, and the aerogel coating thickness is 0.5-3.0 mm;
[0021] In this embodiment, by setting a first reinforcing layer 2 on the outer surface of the inner thermoplastic tube 1, and then coating a gradient aerogel layer 3 on the surface of the first reinforcing layer 2 to form a flexible strip, the protective effect of the inner thermoplastic tube 1 is improved. At the same time, in conjunction with the use of the second reinforcing layer 4 and the outer protective tube 5, the first reinforcing layer 2 and the second reinforcing layer 4 form a bidirectional winding reinforcement synergistic design on both sides of the gradient aerogel layer 3, further enhancing the strength of the inner thermoplastic tube 1 and its adaptability to complex environments, and improving the overall high-efficiency heat insulation, pressure resistance and flexibility of the pipeline.
[0022] Example 2
[0023] Based on Example 1, such as Figure 2 As shown, this utility model discloses a gradient aerogel-reinforced multilayer composite flexible pipe. The gradient aerogel layer 3 has a thermal conductivity ≤0.020W / (m·K), porosity ≥97%, interfacial peel strength ≥50N / cm, and dynamic bending fatigue life ≥5×10⁻⁶. 6 Second-rate;
[0024] As shown in Figure 1 The inner layer thermoplastic pipe 1 is made of high-temperature-resistant polymer, and the long-term temperature resistance is ≥95℃;
[0025] As shown in Figure 1 The outer protective pipe 5 is made of wear-resistant and UV-resistant material, and is coated with a functional coating on the surface;
[0026] As shown in Figure 1 The inner layer thermoplastic pipe 1, the first reinforcing layer 2, the gradient aerogel layer 3, the second reinforcing layer 4 and the outer protective pipe 5 are prepared and processed by a continuous production process;
[0027] In this embodiment, the use effect is improved, and the service life and use reliability of the multilayer composite flexible pipe are improved.
[0028] The gradient aerogel reinforced multilayer composite flexible pipe of the utility model, when working, through setting the first reinforcing layer 2 on the outer surface of the inner layer thermoplastic pipe 1, then coating the gradient aerogel layer 3 on the surface of the first reinforcing layer 2, makes it form flexible strip material, simultaneously cooperates the use of the second reinforcing layer 4 and the outer protective pipe 5, makes the first reinforcing layer 2 and the second reinforcing layer 4 form bidirectional winding reinforcing synergic design on the two sides of the gradient aerogel layer 3.
[0029] The above is only the preferred embodiment of the utility model, it should be pointed out that for the ordinary skilled person in the prior art, without departing from the technical principle of the utility model, a number of improvements and modifications can be made, these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. A gradient aerogel reinforced multilayer flexible pipe comprising an inner thermoplastic pipe (1) and a first reinforcement layer (2) disposed on the outer lateral wall of the inner thermoplastic pipe (1); characterized in that, It also includes gradient aerogel layer (3), the second reinforcing layer (4) and the outer layer protection pipe (5), gradient aerogel layer (3) is arranged on the outer side wall of the first reinforcing layer (2), the second reinforcing layer (4) is arranged on the outer side wall of gradient aerogel layer (3), the outer layer protection pipe (5) is arranged on the outer side wall of the second reinforcing layer (4), the gradient aerogel layer (3) is made of flexible aerogel strip material, the first reinforcing layer (2) is made of continuous fiber with θ1=50°~70° spiral angle positive winding, the second reinforcing layer (4) is made of continuous fiber with θ2=θ1± (20°~40°) spiral angle reverse winding.
2. A gradient aerogel reinforced multilayer flexible pipe according to claim 1, wherein, The base material of the flexible aerogel strip material of the gradient aerogel layer (3) is glass fiber cloth or polyimide film, and the aerogel coating thickness is 0.5~3.0mm.
3. A gradient aerogel reinforced multilayer flexible pipe according to claim 1, wherein, The thermal conductivity of the gradient aerogel layer (3) is ≤0.020 W / (m·K), the porosity is ≥97%, the interfacial peeling strength is ≥50 N / cm, and the dynamic bending fatigue life is ≥5×10 6 seconds.
4. A gradient aerogel reinforced multilayer flexible pipe according to claim 1, wherein, The inner layer thermoplastic pipe (1) is made of high-temperature resistant polymer, and the long-term temperature resistance is ≥95℃.
5. A gradient aerogel reinforced multilayer flexible pipe according to claim 1, wherein, The outer layer protection pipe (5) is made of wear-resistant and UV-resistant material, and simultaneously has a surface composite functional coating.
6. A gradient aerogel reinforced multilayer flexible pipe according to claim 1, wherein, The inner layer thermoplastic pipe (1), the first reinforcing layer (2), the gradient aerogel layer (3), the second reinforcing layer (4) and the outer layer protection pipe (5) are prepared and processed by continuous production process.