Composite material spiral rib reinforced pipeline

Abstract

The utility model discloses a composite material spiral rib reinforced pipeline which comprises a pipeline body and a spiral rib wound on the pipeline body, the section of the spiral rib is similar to a circle, and the spiral rib comprises a rib core and a binding band layer wrapping and fixing the rib core. By means of the design of the spiral ribs, the pipeline has high strength and can stably operate for a long time in a severe environment.

Description

Technical Field

[0001] The present application relates to the field of composite pipes, in particular to a composite material spiral rib reinforced pipe. Background Art

[0002] In the current field of piping system technology, PE pipes and PVC pipes occupy an important position and are widely used in many aspects such as water and gas transmission. These pipes are resistant to corrosion from a variety of chemicals, making them suitable for fields such as the chemical industry and sewage treatment. Compared with metal pipes, PC and PPVC pipes are not easy to rust, have low maintenance costs and long service life. In addition, although not as strong as metal, these pipes provide enough strength to meet the basic needs of many applications.

[0003] However, despite the above advantages, the design and material selection of these piping systems are limited by their maximum diameter and high water pressure. The maximum diameter on the market is currently about 800 mm, and the maximum water pressure cannot exceed 1.6 MPa. When the pipe diameter attempts to exceed this limit, the required structural integrity and safety become difficult to achieve, resulting in limitations in large applications.

[0004] Specifically, existing PE and PVC pipe designs cannot effectively support diameters exceeding 800 mm, which limits their use in applications that require large flow rates. For example, in large municipal projects, agricultural irrigation systems, industrial drainage systems, and other fields, flow requirements often far exceed the limits that existing pipes can provide. This limitation reduces the competitiveness of these materials in some key applications, especially in projects that have special requirements for pipe diameter or water pressure.

[0005] In order to increase the diameter while maintaining the necessary structural strength, the existing solution is to increase the wall thickness of the pipe. However, this practice leads to a significant increase in cost and weight, making the production, transportation and installation of these pipes more complicated and expensive. The increase in wall thickness means that more material is required, which not only increases the direct material cost, but may also lead to an increase in processing and manufacturing costs. In addition, the increase in weight requires greater manpower and mechanical support during the installation process, further increasing the cost of the overall project. This cost increase has caused project budget overruns in many cases, especially in large-scale infrastructure projects.

[0006] What is more serious is that the existing technology does not perform well in high-pressure and high-impact scenarios. These environments require pipes to have pressure resistance and impact resistance that exceed the strength of conventional materials. For example, in urban water supply systems, high-speed transportation pipelines, and oil and gas collection and transportation systems, pipes may be subjected to unexpected mechanical shocks or must withstand continuous high pressures. Existing PC and PPVC pipes are prone to damage under these extreme conditions, which may cause leaks or pipe ruptures, leading to safety accidents and environmental pollution. Therefore, although they perform well under general conditions, their use is severely limited in specific industries and applications that require high durability and reliability.

[0007] In summary, although PE and PVC pipes offer excellent performance in many aspects, such as chemical resistance, corrosion resistance, and a certain degree of strength, they still face problems such as diameter limitations, working water pressure limitations, insufficient pressure resistance, and insufficient performance in high-pressure and high-impact environments. These limitations highlight the need for new technologies, especially those that can overcome these limitations and provide larger diameters, higher strength, and better impact resistance. Therefore, the development of new composite pipe structures that can meet these needs is not only a manifestation of technological progress, but also a necessary step to meet market demand and improve safety and economic benefits. Utility Model Content

[0008] The purpose of the present application is to overcome at least one of the shortcomings of the prior art and to provide a composite spiral rib reinforced pipe, which can not only significantly increase the diameter of the pipe and enhance its ability to withstand higher water pressure, but also provide additional impact protection.

[0009] To achieve the above objectives, the present application discloses a composite spiral rib reinforced pipe, comprising a pipe body, a spiral rib wrapped around the pipe body, wherein the cross-section of the spiral rib is quasi-circular, comprising a rib core and a binding layer covering and fixing the rib core.

[0010] Furthermore, the rib core is composed of a number of coaxial parallel glass fibers, the overall cross-section is quasi-circular, and the gaps between the glass fibers are filled with epoxy resin or unsaturated resin to fix the glass fibers; the binding layer is composed of at least one glass fiber filament with epoxy resin or unsaturated resin spirally wound on the outer surface of the rib core.

[0011] In some embodiments, the pipe body is a fiberglass pipe, which includes an inner lining layer and a fiberglass layer from the inside to the outside. The spiral rib layer is spirally wound around the fiberglass layer and is fixed to the fiberglass layer through epoxy resin or unsaturated resin.

[0012] In some embodiments, the pipe body is a glass fiber reinforced plastic sand-filled pipe, which includes an inner lining layer, an inner structural layer, a sand-filled layer and an outer protective glass fiber reinforced plastic layer from the inside to the outside, wherein the outer protective glass fiber reinforced plastic layer is fixed to the spiral ribs by epoxy resin or unsaturated resin.

[0013] In some embodiments, the pipe body is a composite pipe body, including an inner pipe and a glass fiber reinforced plastic layer bonded to the outside of the inner pipe, the glass fiber reinforced plastic layer and the spiral ribs are integrally connected; the inner pipe is one of PVC-UH, PVC-U, PVC-M, and PE pipes. Compared with the prior art, the present application has at least one of the following beneficial effects:

[0014] 1. Corrosion resistance and high strength: With the design of spiral ribs, the pipeline has high strength and can operate stably for a long time in harsh environments.

[0015] 2. Anti-wear and protective lining: The spiral rib layer made of glass fiber and epoxy resin or unsaturated resin has good wear resistance. At the same time, the design of the lining layer effectively protects the inside of the pipe from corrosion and wear.

[0016] 3. Lightweight and integrated design: The lightweight design of the pipeline reduces transportation and installation costs, and the spiral ribs are connected to the fiberglass layer through epoxy resin or unsaturated resin, which enhances the overall structural performance and improves stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] After reading the following detailed description in conjunction with the accompanying drawings, you will have a better understanding of various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the accompanying drawings sometimes do not represent the actual positions, sizes, and ranges. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of Example 1.

[0019] Figure 2 It is a schematic diagram of the structure of Example 1 from another perspective.

[0020] Figure 3 Schematic diagram of the structure of the spiral rib in Example 1.

[0021] Figure 4 It is a schematic diagram of the structure of the spiral rib in Example 1 from a three-dimensional perspective.

[0022] Figure 5 It is a structural schematic diagram of Example 2.

[0023] Figure 6 It is a structural schematic diagram of Example 3. DETAILED DESCRIPTION

[0024] The present disclosure will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0025] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0026] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorized specification.

[0027] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. The terms "between X and Y" and "between approximately X and Y" used in the specification should be interpreted as including X and Y. The term "between approximately X and Y" used in this specification means "between approximately X and approximately Y", and the term "from approximately X to Y" used in this specification means "from approximately X to approximately Y".

[0028] In the specification, when an element is said to be "on", "attached", "connected", "coupled" or "contacting" another element, the element may be directly on, attached, connected, connected or contacting another element, or there may be intermediate elements. In contrast, when an element is said to be "directly" "on", "directly connected", "directly connected", "directly coupled" or "directly contacting" another element, there will be no intermediate elements. In the specification, a feature is arranged "adjacent" to another feature, which may mean that a feature has a portion that overlaps with the adjacent feature or a portion that is located above or below the adjacent feature.

[0029] In the specification, spatial relational terms such as "upper", "lower", "left", "right", "front", "back", "higher", "lower", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned over, features that were originally described as being "below" other features may now be described as being "above" the other features. The device may also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly. Example

[0030] Figures 1 to 4 An exemplary structure for achieving the technical purpose of the present application is shown, specifically a composite spiral rib reinforced pipe. The pipe is a multi-layer structure to improve the mechanical strength, corrosion resistance and durability of the pipe.

[0031] As shown in the figure, this embodiment includes a pipe body 1 and a spiral rib 2 wound and fixed on the pipe body 1, wherein the pipe body 1 includes an inner lining layer and a fiberglass layer from the inside to the outside. The inner lining layer provides excellent chemical stability and reduces the friction of the internal fluid. The fiberglass layer is located outside the inner lining layer and is composed of high-strength glass fiber and epoxy resin or unsaturated resin, which enhances the structural strength and chemical resistance of the pipe. The spiral rib 2 is on the outside of the fiberglass layer, and the spiral rib core 3 and the binding layer 4 are designed to further enhance the pressure resistance and mechanical strength of the pipe.

[0032] More specifically, in this embodiment, the lining layer is in direct contact with the fluid, and the material selected is a material with good chemical stability, such as a polymer material, to reduce the friction between the fluid and the pipeline and provide preliminary chemical protection.

[0033] In this embodiment, the inner lining layer and the glass fiber reinforced plastic layer are closely bonded to ensure a firm connection between the two. The glass fiber reinforced plastic layer is made of high-strength glass fiber and epoxy resin or unsaturated resin, providing excellent structural strength and chemical resistance.

[0034] In this embodiment, the spiral rib 2 is the core to ensure the structural strength of the pipeline. It consists of a spiral rib core 3 and a binding layer 4: wherein the rib core 3 is composed of a number of coaxial parallel glass fibers, and the overall cross-section is quasi-circular. The gaps between these glass fibers are fully filled with epoxy resin or unsaturated resin to fix each glass fiber in a specified position and enhance the overall structural stability. The binding layer 4 is arranged on the outer surface of the rib core 3, and has at least one spirally wound glass fiber filament. This design not only further enhances the structural strength of the spiral rib, but also effectively improves the torsional stability and compressive resistance of the entire pipeline through its spiral shape.

[0035] Through the carefully designed structure and connection relationship between the above layers, this composite spiral rib reinforced pipe can provide excellent performance in a variety of industrial applications, including but not limited to petroleum, chemical, municipal engineering and other fields. It is especially suitable for large-diameter lightweight pipes and meets the environment with high requirements for corrosion resistance, wear resistance and mechanical strength. Example

[0036] like Figure 5 As shown, the difference between this embodiment and embodiment 1 is that the pipe body 1 is a glass fiber reinforced plastic sand-filled pipe, which is a pipe composed of multiple layers of different materials. The specific structure is, from inside to outside, an inner lining layer 6, an inner structural layer 7, a sand-filled layer 8, and an outer protective glass fiber reinforced plastic layer 9. Each layer plays a specific function and improves the performance of the pipe together.

[0037] Among them, in this embodiment, the inner lining layer 6 is the innermost layer of the pipeline body 1 and directly contacts the conveying medium. It is usually made of materials with good chemical stability and physical properties. The inner structural layer 7 is located between the inner lining layer 6 and the sand-filled layer 8, and is mainly composed of glass fiber and resin, which is used to enhance the mechanical strength and rigidity of the pipeline body 1. This layer is reinforced by winding or other means to withstand the internal and external pressure difference and other external forces to ensure the stability of the structure of the pipeline body 1. The sand-filled layer 8 is located between the inner structural layer 7 and the outer protective layer 9, and its main components include quartz sand, glass fiber and resin. The addition of quartz sand greatly improves the overall rigidity and pressure bearing capacity of the pipeline. At the same time, because the cost of quartz sand is relatively low, this can also reduce costs without sacrificing performance. The presence of the sand-filled layer 8 is a significant feature of the FRP sand-filled pipe that distinguishes it from other types of FRP pipes.

[0038] In this embodiment, the outer protective fiberglass layer 9 is the outermost layer of the pipeline body 1, which is composed of glass fiber and epoxy resin or unsaturated resin. This layer not only provides additional mechanical strength, but also has good corrosion resistance and environmental resistance, protecting the pipeline from erosion by the external environment. The outer protective fiberglass layer 9 is spirally wound with ribs 2 and tightly combined to form an integrated structure to increase the overall strength and durability of the pipeline. Example

[0039] like Figure 6 As shown, the difference between this embodiment and embodiment 1 is that the pipe body 1 is a combination of a PVC-UH pipe and a FRP pipe. An outer layer of FRP with a thickness of several millimeters is wrapped on the structural wall of the PVC-UH pipe, and then the outer layer of FRP is connected to the spiral rib 2 as a whole.

[0040] Although the exemplary embodiments of the present disclosure have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. Composite spiral rib reinforced pipe, characterized by: It includes a pipe body and a spiral rib wrapped around the pipe body. The cross-section of the spiral rib is quasi-circular, including a rib core and a binding layer covering and fixing the rib core. The pipe body is a glass fiber reinforced plastic pipe, which includes an inner lining layer and a glass fiber reinforced plastic layer from the inside to the outside. The spiral rib layer is spirally wound around the glass fiber reinforced plastic layer and is fixed to the glass fiber reinforced plastic layer through epoxy resin or unsaturated resin.

2. Composite spiral rib reinforced pipe, characterized by: It includes a pipe body and a spiral rib wound around the pipe body. The cross-section of the spiral rib is quasi-circular, including a rib core and a binding layer covering and fixing the rib core. The pipe body is a glass fiber reinforced plastic sand-filled pipe, which includes an inner lining layer, a glass fiber reinforced plastic layer and a sand-filled layer from the inside to the outside, wherein the sand-filled layer is fixed to the sand-filled layer by epoxy resin or unsaturated resin.

3. Composite spiral rib reinforced pipe, characterized by: It includes a pipe body and a spiral rib wound around the pipe body. The cross section of the spiral rib is quasi-circular, including a rib core and a binding layer covering and fixing the rib core. The pipe body is a composite pipe body, including an inner pipe and a glass fiber reinforced plastic layer bonded to the outside of the inner pipe, and the glass fiber reinforced plastic layer is integrally connected with the spiral rib. The inner pipe is one of PVC-UH, PVC-U, PVC-M, and PE pipes.

4. The composite spiral rib reinforced pipe according to any one of claims 1, 2 and 3, characterized in that: The rib core is composed of a number of coaxial parallel glass fibers, and the overall cross-section is quasi-circular. The gaps between the glass fibers are filled with epoxy resin or unsaturated resin to fix the glass fibers. The binding layer is composed of at least one glass fiber filament with epoxy resin or unsaturated resin spirally wound on the outer surface of the rib core.

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