Lining hose for trenchless repair of pipeline

Abstract

The utility model relates to the technical field of hoses, and discloses a pipeline trenchless repair lining hose which comprises an ultraviolet-proof film, a lining hose body is arranged on the inner wall of the ultraviolet-proof film, an outer isolating film is arranged on the inner wall of the lining hose body, a glass fiber chopped strand mat is arranged on the inner wall of the outer isolating film, and a glass fiber chopped strand mat is arranged on the inner wall of the glass fiber chopped strand mat. Glass fiber cloth is arranged on the inner wall of the glass fiber chopped strand mat, and a sandwich diversion layer is arranged on the inner wall of the glass fiber cloth. The lining hose is integrally formed from manufacturing to imbedding in the pipeline for curing, holes, cracks and notches of the original pipeline can be sealed, permeation is isolated, seepage is prevented, and the sealing performance and integrity of the pipeline are greatly improved. After the resin adhesive and the fiber cloth are condensed and cured, a high-strength and high-modulus glass fiber reinforced plastic layer is formed in the original pipeline, so that the soil layer extrusion resistance of the original pipeline is improved, and the deformation amplitude of the pipeline in the later period is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hose technology, specifically to an inner-lined hose for trenchless pipeline repair. Background Technology

[0002] As drainage pipeline facilities age, corrosion and damage inside underground pipelines are becoming increasingly common. In some areas, due to the alluvial soft soil layer, the support for pipeline foundations is very weak. Some underground pipelines on certain road sections have experienced groundwater leakage at joints and pipeline damage in less than five years since construction. This has caused road subsidence and even collapse in these areas, endangering urban sewage discharge and road traffic, and also bringing great pressure and difficulties to the work of pipeline management departments.

[0003] Traditional open-cut repair methods require extensive excavation and restoration of the existing road surface. This process is not only time-consuming and covers a large area, but also significantly impacts traffic. Furthermore, it necessitates protective measures for surrounding pipelines and long-term temporary sewage discharge procedures. Consequently, the construction costs are high and the work is difficult. Therefore, there is an urgent need for a reliable trenchless lining pipe material that can solve the problem quickly and comprehensively line and repair pipelines. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a non-excavation pipeline repair lined hose, which has the advantages of avoiding road excavation and repair, fewer safety and quality risks, high pipeline stability, low pipe wall damage rate, long pipeline service life, good durability, and good heat insulation effect, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution:

[0006] A trenchless pipeline repair liner hose includes a UV-protective membrane, an inner wall of which is provided with a liner hose body, an outer isolation membrane on the inner wall of the liner hose body, a chopped strand mat on the inner wall of the outer isolation membrane, a fiberglass cloth on the inner wall of the chopped strand mat, a core flow guiding layer on the inner wall of the fiberglass cloth, and an inner isolation membrane on the inner wall of the core flow guiding layer.

[0007] As a preferred technical solution of this utility model: the outer wall of the UV-protective film is provided with a foam coating, and the outer wall of the foam coating is provided with a polytetrafluoroethylene coating.

[0008] As a preferred technical solution of this utility model: the foam coating is prepared by polyurethane, the glass fiber cloth is the core layer of the inner lining hose body, and needs to be soaked in light-cured resin adhesive. The glass fiber cloth is a multi-axial woven fabric made of high-modulus alkali-free glass fiber or ECR glass fiber, with a fabric thickness of not less than 9mm and a basis weight of 800g / cm³. 2 -1050g / cm 2 Between these elements lies the foundation of the hose skeleton material and its high strength and high elastic modulus.

[0009] As a preferred technical solution of this utility model: the chopped strand mat is tightly bonded to the outer wall of the glass fiber cloth, the core guiding layer is located between the glass fiber cloth and the inner isolation membrane, the UV protection film is located on the outermost layer of the inner lining hose body, and the UV protection film is made of high-strength light-shielding plastic film.

[0010] As a preferred technical solution of this utility model: the outer isolation membrane is located on the outer layer of glass fiber chopped strand mat, and the outer isolation membrane is made of high-strength plastic film; the core flow guiding layer is made of carbon fiber, and the core flow guiding layer is in the shape of a honeycomb mesh.

[0011] As a preferred technical solution of this utility model: the foam coating and the polytetrafluoroethylene coating are bonded by hot pressing, the inner isolation membrane is located in the innermost layer of the hose structure layer, and the inner isolation membrane is made of a high-performance plastic film that is resistant to ultraviolet radiation and high temperature. The inner lining hose body is made by adding photosensitizer, photoinitiator, defoamer and filler to the resin matrix using a light-curing resin adhesive.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The non-excavation pipeline repair using a flexible lining is a single, integrated molding process, from fabrication to insertion and curing. This seals existing pipe holes, cracks, and gaps, preventing seepage and significantly improving the pipe's sealing and overall integrity. After the resin adhesive and fiber cloth solidify, a high-strength, high-modulus fiberglass layer forms inside the original pipe, increasing its resistance to soil compression and reducing subsequent pipe deformation.

[0014] 2. The pipeline is repaired without excavation and has an inner flexible lining. The construction method of the inner flexible lining can avoid road excavation and repair work, which can shorten the construction period and significantly reduce the investment in construction costs and safety measures.

[0015] 3. The non-excavation repair of the pipeline uses a flexible inner lining, which is mainly composed of high-strength composite materials such as resin and glass fiber. The corrosion resistance and wear resistance of the material are superior to those of ordinary pipelines, thereby improving the service life and durability of the pipeline.

[0016] 4. The inner lining hose of this trenchless pipeline repair uses a foam coating to effectively prevent the loss of internal medium temperature, improving thermal efficiency. The foam coating also absorbs and disperses external impact forces, protecting the hose from mechanical damage and extending its service life. The PTFE coating makes the surface of the inner lining hose smoother, reducing fluid resistance in the pipeline and improving fluid transmission efficiency. Furthermore, the PTFE coating has strong corrosion resistance and weather resistance, resisting the erosion of various chemicals and preventing hose failure due to corrosion, thus protecting the inner lining hose itself. Attached Figure Description

[0017] Figure 1 This is a side cross-sectional view of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a schematic diagram illustrating the performance indicators of the UV-protective film of this utility model;

[0020] Figure 4 This is a schematic diagram illustrating the performance indicators of the resin of this utility model.

[0021] Figure 5 This is a schematic diagram showing the performance indicators of the internal isolation membrane of this utility model.

[0022] In the diagram: 1. UV protection film; 2. Inner liner hose body; 3. Outer isolation film; 4. Fiberglass chopped strand mat; 5. Fiberglass cloth; 6. Core flow guide layer; 7. Inner isolation film; 8. Foam coating; 9. Polytetrafluoroethylene coating. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 2A trenchless pipeline repair liner hose includes an ultraviolet-resistant membrane 1, an inner liner hose body 2 on the inner wall of the ultraviolet-resistant membrane 1, an outer isolation membrane 3 on the inner wall of the inner liner hose body 2, a chopped fiberglass mat 4 on the inner wall of the outer isolation membrane 3, a fiberglass cloth 5 on the inner wall of the chopped fiberglass mat 4, a core flow guiding layer 6 on the inner wall of the fiberglass cloth 5, and an inner isolation membrane 7 on the inner wall of the core flow guiding layer 6.

[0025] In the above structure, the inner lining hose body 2 is the core technology of the light-cured inner lining repair technology through the light-cured resin adhesive. The resin matrix is ​​mainly composed of unsaturated polyester resin (UP) and vinyl ester resin (VE).

[0026] In a preferred embodiment: the outer wall of the UV-protective film 1 is provided with a foam coating 8, and the outer wall of the foam coating 8 is provided with a polytetrafluoroethylene coating 9.

[0027] In the above structure, the foam coating 8 effectively prevents the loss of internal medium temperature of the inner lining hose body 2, thereby improving thermal efficiency. At the same time, the foam coating 8 also has the ability to absorb and disperse external impact forces, protecting the inner lining hose body 2 from mechanical damage and thus extending its service life. The polytetrafluoroethylene coating 9 makes the surface of the inner lining hose body 2 smoother, reducing the resistance of fluid in the pipeline and thus improving fluid transmission efficiency. In addition, the polytetrafluoroethylene coating 9 has strong corrosion resistance and weather resistance, and can resist the erosion of various chemical substances, preventing the inner lining hose body 2 from failing due to corrosion, thereby achieving comprehensive protection for the inner lining hose body 2.

[0028] In a preferred embodiment: the foam coating 8 is made of polyurethane, and the fiberglass cloth 5 is the core layer of the inner lining hose body 2, which needs to be impregnated with a light-curing resin adhesive. The fiberglass cloth 5 is a multi-axial woven fabric made of high-modulus alkali-free glass fiber or ECR glass fiber, with a fabric thickness of not less than 9 mm and a basis weight of 800 g / cm³. 2 ~1050g / cm 2 Between these elements lies the foundation of the hose skeleton material and its high strength and high elastic modulus.

[0029] In the above structure, the foam coating 8 is made of polyurethane, which gives the foam coating 8 good elasticity and wear resistance, making it suitable for pipes of various shapes and sizes. It also improves the flexibility of the foam coating 8, allowing it to withstand certain deformations without falling off or cracking. In addition, it can effectively prevent heat transfer and maintain temperature stability. The glass fiber cloth 5 is made of high-modulus alkali-free glass fiber, which enables it to withstand greater tensile strength within the elastic limit and is not easy to break. At the same time, it can maintain stable performance in harsh environments such as high temperature, low temperature and strong acid and strong alkali.

[0030] In a preferred embodiment: the chopped strand mat 4 is tightly bonded to the outer wall of the fiberglass cloth 5, the core flow guiding layer 6 is located between the fiberglass cloth 5 and the inner isolation membrane 7, and the UV-protective film 1 is located on the outermost layer of the inner lining hose body 2, and the UV-protective film 1 is made of high-strength light-shielding plastic film.

[0031] In the above structure, the chopped strand mat 4 can be applied irregularly, but must be evenly attached to the fiberglass cloth 5. It mainly serves to thicken the fiberglass cloth 5. The UV-protective film 1 is arranged on the outermost layer of the inner lining hose body 2. It is a high-strength light-blocking plastic film to prevent external light from shining on the hose.

[0032] The specifications of UV protection film 1 are as follows: Figure 3 As shown.

[0033] In a preferred embodiment: the outer isolation membrane 3 is located on the outer layer of the glass fiber chopped strand mat 4, and the outer isolation membrane 3 is made of high-strength plastic film, the core flow guiding layer 6 is made of carbon fiber, and the core flow guiding layer 6 is in the shape of a honeycomb mesh.

[0034] In the above structure, the outer isolation membrane 3 is arranged on the outer layer of the glass fiber cloth 5. It is a high-strength plastic film and mainly separates the glass fiber cloth 5 from the UV protection film 1. The core flow guiding layer 6 is mainly made of carbon fiber and needs to be processed into a honeycomb mesh. It is arranged between the glass fiber cloth 5 and the inner isolation membrane 7, which is conducive to the flow and wetting of resin between the fibers.

[0035] In a preferred embodiment: the foam coating 8 and the polytetrafluoroethylene coating 9 are bonded by hot pressing, the inner isolation membrane 7 is located in the innermost layer of the hose structure layer, and the inner isolation membrane 7 is made of a high-performance plastic film that is resistant to ultraviolet radiation and high temperature. The inner lining hose body 2 is made by adding photosensitizers, photoinitiators, defoamers, fillers and other additives to the resin matrix using a light-curing resin adhesive.

[0036] In the above structure, the foam coating 8 and the polytetrafluoroethylene coating 9 are connected by hot pressing to limit the foam coating 8 and the polytetrafluoroethylene coating 9. The internal isolation membrane 7 is made of a high-performance plastic film that is resistant to ultraviolet radiation and high temperature to isolate the impregnated resin fiber layer from the curing lamp assembly.

[0037] The main properties of the resin are as follows Figure 4 As shown.

[0038] The specifications of the internal isolation membrane 7 are as follows: Figure 5 As shown.

[0039] Working Principle: A fiberglass flexible tube impregnated with UV-cured resin adhesive is inserted into the pipe to be repaired using a drag-in method. A UV lamp is then used to irradiate the inside of the pipe, causing the tube to cure and form a high-strength, high-modulus fiberglass lining. This enhances the pipe's pressure resistance, repairs gaps, and extends its service life. During the solidification process of the fiberglass and resin material in the flexible tube body 2, the pipe structure's pressure resistance is gradually increased, improving its stability. During the bonding process between the resin fiber and the old pipe, any gaps in the original pipe can be sealed and repaired. After the flexible tube body 2 has cured, the inside of the pipe is smooth and straight, greatly improving internal flow and reducing the risk of damage caused by various factors. The probability of pipe blockage caused by obstacles is reduced. Through the special design of the foam coating 8, the inner lining hose body 2 can effectively prevent the loss of internal medium temperature and improve thermal efficiency. At the same time, the foam coating 8 can also absorb and disperse external impact forces, protecting the inner lining hose body 2 from mechanical damage and further extending its service life. Through the special treatment of the polytetrafluoroethylene coating 9, the surface of the inner lining hose body 2 is made smoother, reducing fluid resistance in the pipeline and improving fluid transmission efficiency. At the same time, the polytetrafluoroethylene coating 9 also has strong corrosion resistance and weather resistance, and can resist the erosion of various chemicals, effectively preventing the inner lining hose body 2 from failing due to corrosion, thus achieving comprehensive protection for the inner lining hose body 2.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inner lining pipe for trenchless rehabilitation of a pipe, comprising an inner lining pipe body (2), characterized in that: The outer wall of the inner lining hose body (2) is provided with an ultraviolet-proof film (1), the inner wall of the inner lining hose body (2) is provided with an outer isolation film (3), the inner wall of the outer isolation film (3) is provided with a glass fiber short-cut felt (4), the inner wall of the glass fiber short-cut felt (4) is provided with a glass fiber cloth (5), the inner wall of the glass fiber cloth (5) is provided with a sandwich flow guide layer (6), and the inner wall of the sandwich flow guide layer (6) is provided with an inner isolation film (7).

2. A pipe trenchless rehabilitation inner lining hose according to claim 1, characterized in that: The outer wall of the ultraviolet-proof film (1) is provided with a foam coating (8), and the outer wall of the foam coating (8) is provided with a polytetrafluoroethylene coating (9).

3. A pipe trenchless rehabilitation inner lining hose according to claim 2, characterized in that: The foam coating (8) is made of polyurethane, the glass fiber cloth is soaked with light-cured resin adhesive, the glass fiber cloth (5) is a multi-axial woven cloth made of high modulus alkali-free glass fiber or ECR glass fiber, the thickness of the woven cloth is not less than 9 mm, and the grammage is 800 g / cm 2 ~ 1050 g / cm 2 .

4. A pipe trenchless rehabilitation inner lining hose according to claim 3, characterized in that: The glass fiber short-cut felt (4) is tightly attached to the outer wall of the glass fiber cloth (5), the sandwich flow guide layer (6) is located between the glass fiber cloth (5) and the inner isolation film (7), the ultraviolet-proof film (1) is located at the outermost layer of the inner lining hose body (2), and the ultraviolet-proof film (1) is made of high-strength light-shielding plastic film.

5. A pipe trenchless rehabilitation inner lining hose according to claim 4, characterized in that: The outer isolation film (3) is located at the outer layer of the glass fiber short-cut felt (4), and the outer isolation film (3) is made of high-strength plastic film, the sandwich flow guide layer (6) is made of carbon fiber, and the sandwich flow guide layer (6) is in the form of a honeycomb mesh.

6. A pipe trenchless rehabilitation inner lining hose according to claim 5, characterized in that: The foam coating (8) and the polytetrafluoroethylene coating (9) are bonded by hot pressing, the inner isolation film (7) is located at the innermost layer of the hose structure layer, and the inner isolation film (7) is made of high-performance plastic film resistant to ultraviolet radiation and high temperature.

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