Reinforced lining hose

Abstract

The utility model relates to the technical field of pipeline repair, and particularly discloses a reinforced lining hose which comprises a first non-woven fabric layer, a first fabric layer and a second non-woven fabric layer which are sequentially arranged from outside to inside, and the first fabric layer is one of a glass fiber fabric layer, a carbon fiber fabric layer and a basalt fiber fabric layer. By means of the overturning device, the glass fiber pipe can be conveniently constructed through an overturning method.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline repair, and in particular to a reinforced liner hose. Background Art

[0002] Urban underground pipelines are responsible for discharging rainwater, sewage, and other wastewater. Because pipelines are subject to wear, aging, and corrosion during use, they are likely to break or leak when subjected to external forces. The traditional method involves digging up the ground, repairing and replacing the pipelines, and then filling the road surface. This method has low construction efficiency and has caused significant inconvenience to road traffic. In recent years, my country has gradually promoted the use of trenchless pipeline repair technology, which is not only highly efficient but also has minimal impact on surrounding traffic, the environment, and other pipelines, offering significant advantages over traditional methods.

[0003] There are many trenchless pipeline repair techniques, including the "small tube inside a large tube" method, where a slightly smaller diameter liner is inserted into the existing pipe and bonded to the original pipe to complete the pipeline repair. Traditional inner liners are divided into fiberglass liner hoses and polyester fiber hoses. Fiberglass hoses are generally rigid and difficult to install using the flipping method, typically requiring only the pull-in method, which has poor adaptability to various working conditions. Polyester fiber hoses are soft and easy to flip, but their strength after curing is low. Utility Model Content

[0004] In order to improve the strength of the polyester hose after curing, materials such as glass fiber are added to the hose, and at the same time, the hose with added reinforcing fibers is convenient for construction by the flipping method. The present application provides a reinforced lining hose.

[0005] The present application provides a reinforced liner hose adopting the following technical solution:

[0006] A reinforced lining hose comprises a first non-woven fabric layer, a first fabric layer and a second non-woven fabric layer arranged in sequence from the outside to the inside, wherein the first fabric layer is one of glass fiber fabric, carbon fiber fabric and basalt fiber fabric layer.

[0007] By adopting the above technical solution, the first fabric layer is mainly used to improve the strength. By arranging non-woven fabric layers on both sides of the first fabric layer, the proportion of the first fabric layer in the overall structure of the lining hose is reduced. While ensuring the strength, the lining hose is easier to flip, thereby facilitating construction by the flipping method, making the construction process simpler.

[0008] Optionally, the first non-woven fabric layer and the second non-woven fabric layer are polyester fiber non-woven fabric layers or polypropylene non-woven fabric layers.

[0009] By adopting the above technical solution, the non-woven fabric layer can provide a certain tensile strength, temperature resistance and wear resistance, and can play a certain load-bearing role.

[0010] Optionally, an anti-seepage layer is provided on the inner side of the second non-woven fabric layer, and the anti-seepage layer is one of TPU, PP, and PE films.

[0011] By adopting the above technical solution, the anti-seepage effect of the lining hose can be enhanced.

[0012] Optionally, the anti-seepage layer and the second non-woven fabric layer are composited to form an anti-seepage membrane.

[0013] By adopting the above technical solution, the anti-seepage layer and the second non-woven fabric layer are more closely attached and have a stronger integrity, which helps to ensure the anti-seepage effect.

[0014] Optionally, a second fabric layer is provided on the outer side of the first non-woven fabric layer, and a third non-woven fabric layer is provided on the outer side of the second fabric layer.

[0015] By adopting the above technical solution, the strength of the lining hose can be further improved.

[0016] Optionally, an elastic layer is provided between the second fabric layer and the third non-woven fabric layer.

[0017] By adopting the above technical solution, the arrangement of the elastic layer provides the lining hose with a certain ability to resist water flow impact, thereby helping to extend its service life.

[0018] Optionally, the elastic layer is a carbon fiber layer.

[0019] By adopting the above technical solution, the carbon fiber layer has better elasticity, which helps to improve the ability of the lining hose to resist water impact; in addition, the carbon fiber layer has higher strength, which helps to improve the strength of the lining hose.

[0020] Optionally, heat-conducting layers are provided on both sides of the carbon fiber layer, and the two heat-conducting layers are respectively against the second fabric layer and the third non-woven fabric layer.

[0021] By adopting the above technical solution, the radial thermal conductivity of the carbon fiber layer is limited, so the thermal conductive layers arranged on both sides of the carbon fiber layer can accelerate the heat transfer, so that after the lining hose is attached to the inner wall of the pipe to be repaired, when steam or hot water is passed into the lining hose, the heat can be better transferred to the third non-woven fabric layer that is attached to the inner wall of the pipe, thereby helping to enhance the curing effect of the resin in the third non-woven fabric layer, thereby ensuring the connection effect between the lining hose and the inner wall of the pipe.

[0022] Optionally, a thermal insulation layer is provided on the outer side of the third non-woven fabric layer.

[0023] By adopting the above technical solution, after the lining hose is attached to the inner wall of the pipe to be repaired, the insulation layer is against the inner wall of the pipe to be repaired. When steam or hot water is passed into the lining hose, the heat can be better retained in the lining hose, and the heat is not easily transferred to the pipe to be repaired, thereby helping to ensure the heating and curing effect of the resin and improving the curing efficiency.

[0024] Optionally, the thermal insulation layer is a polyurethane film.

[0025] By adopting the above technical solution, the polyurethane film not only has good thermal insulation ability, but also has excellent strength, ductility, wear resistance and tear strength, thereby helping to enhance the strength of the lining hose.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The first fabric layer has a greater hardness, and non-woven fabric layers are provided on both sides of the first fabric layer. Therefore, while ensuring the structural strength of the lining hose, the proportion of the first fabric layer in the overall structure of the lining hose is reduced, making the lining hose easier to construct by the flipping method, making the construction process simpler.

[0028] 2. The provision of the second fabric layer and the third non-woven fabric layer helps to further enhance the strength of the lining hose.

[0029] 3. The setting of the elastic layer makes the lining hose have a certain buffering property, which can reduce the impact of the impact of the water flow on the lining hose and help to extend the service life of the lining hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0031] Figure 2 is a radial cross-sectional view of Example 1 of the present application;

[0032] Figure 3 It is a radial cross-sectional view of Example 2 of the present application.

[0033] Figure numerals: 1, first non-woven fabric layer; 2, first fabric layer; 3, second non-woven fabric layer; 4, anti-seepage layer; 5, second fabric layer; 6, third non-woven fabric layer; 7, elastic layer; 8, heat-conducting layer; 9, thermal insulation layer; 10, pipeline. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] Example 1

[0036] The embodiment of the present application discloses a reinforced liner hose. Figure 1 and Figure 2 The reinforced lining hose includes, from the outside to the inside, a first non-woven fabric layer 1, a first fabric layer 2, and a second non-woven fabric layer 3. The first fabric layer 2 is a glass fiber fabric, a carbon fiber fabric, or a basalt fiber fabric layer, and has a high hardness, providing a certain strength to the lining hose. The first non-woven fabric layer 1 and the second non-woven fabric layer 3 are a polyester fiber non-woven fabric layer or a polypropylene non-woven fabric layer, and have high flexibility. Therefore, the lining hose composed of the fabric layer and the non-woven fabric layer achieves both strength and flexibility, facilitating construction via the flipping method and simplifying the construction process.

[0037] Reference Figure 2 The second non-woven fabric layer 3 is further provided with an anti-seepage layer 4 on its inner side. The anti-seepage layer 4 is made of a TPU, PP, or PE film, which has good anti-seepage and wear-resistant effects. The anti-seepage layer 4 is laminated to the second non-woven fabric layer 3 by casting, thus enhancing the integrity of the two and providing better anti-seepage performance.

[0038] Furthermore, a second fabric layer 5 is disposed outside the first non-woven fabric layer 1. The second fabric layer 5 is made of one of glass fiber, carbon fiber, and basalt fiber. A third non-woven fabric layer 6 is disposed outside the second fabric layer 5. The third non-woven fabric layer 6 is made of one of polyester fiber and polypropylene fiber. This further enhances the strength of the lining hose.

[0039] The above-mentioned first non-woven fabric layer 1, first fabric layer 2, second non-woven fabric layer 3, anti-seepage layer 4, second fabric layer 5 and third non-woven fabric layer 6 are all impregnated with resin. After the lining hose is attached to the inner wall of the pipe to be repaired 10, the resin in each layer structure can be solidified by heating, thereby hardening the lining hose and fixing the lining hose to the inner wall of the pipe to be repaired 10 to realize non-excavation repair of the pipe 10.

[0040] The working principle of Example 1 is as follows: Before installation, the inner lining hose comprises, from outside to inside, an impermeable layer 4, a second non-woven fabric layer 3, a first fabric layer 2, a first non-woven fabric layer 1, a second fabric layer 5, and a third non-woven fabric layer 6. Resin is then poured into the inner lining hose and extruded to ensure that the resin fully permeates each layer. The inner lining hose is then installed in a turning machine, with one end of the inner lining hose fixedly connected to the turning machine's outlet. The turning machine outputs high-pressure gas through the outlet, gradually extending the inner lining hose while simultaneously turning it outward, flipping the previously inward portion to the outside.

[0041] After the lining hose is inserted into the pipe to be repaired, it now consists of, from outside to inside, the third non-woven fabric layer 6, the second fabric layer 5, the first non-woven fabric layer 1, the first fabric layer 2, the second non-woven fabric layer 3, and the barrier layer 4. At this point, the third non-woven fabric layer 6 abuts the inner wall of the pipe to be repaired. Steam or hot water is then introduced into the lining hose to heat and cure the resin within it, thereby firmly bonding the lining hose to the inner wall of the pipe 10 to be repaired, completing the repair of the pipe 10.

[0042] Example 2

[0043] Reference Figure 3 The difference between this embodiment and embodiment 1 is that in this embodiment, an elastic layer 7 is provided between the second fabric layer 5 and the third non-woven fabric layer 6. The elastic layer 7 is made of carbon fiber and has good elasticity.

[0044] Thermally conductive layers 8, each made of aluminum foil, are disposed on both sides of the elastic layer 7. These layers, respectively, abut the outer side of the second fabric layer 5 and the inner side of the third non-woven fabric layer 6. The provision of these layers enhances the thermal conductivity of the elastic layer 7. When steam or hot water is introduced into the lining hose, heat is more easily transferred through the elastic layer 7 to the third non-woven fabric layer 6, helping to ensure the curing of the resin and, consequently, the bonding between the lining hose and the pipe to be repaired 10. In other embodiments, the thermally conductive layer 8 may also be a graphite layer.

[0045] Furthermore, an insulation layer 9 is provided on the outside of the third non-woven fabric layer 6. The insulation layer 9 is a polyurethane film. Therefore, after the lining hose is attached to the inner wall of the pipe 10 to be repaired, the insulation layer 9 can be made to abut against the inner wall of the pipe 10. When the lining hose is heated, the insulation layer 9 can better isolate the heat in the lining hose, thereby ensuring the curing effect of the resin in the lining hose.

[0046] The above are optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A reinforced lined hose, characterized by: The invention comprises a first non-woven fabric layer (1), a first fabric layer (2), and a second non-woven fabric layer (3) which are sequentially arranged from the outside to the inside, wherein the first fabric layer (2) is one of a glass fiber fabric, a carbon fiber fabric, and a basalt fiber fabric layer; The first non-woven fabric layer (1) and the second non-woven fabric layer (3) are polyester fiber non-woven fabric layers or polypropylene non-woven fabric layers; An anti-seepage layer (4) is provided on the inner side of the second non-woven fabric layer (3), and the anti-seepage layer (4) is one of TPU, PP, and PE films; The anti-seepage layer (4) and the second non-woven fabric layer (3) are combined to form an anti-seepage membrane.

2. The reinforced liner hose according to claim 1, characterized in that: A second fabric layer (5) is provided on the outer side of the first non-woven fabric layer (1), and a third non-woven fabric layer (6) is provided on the outer side of the second fabric layer (5).

3. The reinforced liner hose according to claim 2, characterized in that: An elastic layer (7) is provided between the second fabric layer (5) and the third non-woven fabric layer (6).

4. The reinforced liner hose according to claim 3, characterized in that: The elastic layer (7) is a carbon fiber layer.

5. The reinforced liner hose according to claim 4, characterized in that: Heat-conducting layers (8) are provided on both sides of the carbon fiber layer, and the two heat-conducting layers (8) are respectively against the second fabric layer (5) and the third non-woven fabric layer (6).

6. The reinforced liner hose according to claim 2, characterized in that: A heat-insulating layer (9) is provided on the outer side of the third non-woven fabric layer (6).

7. The reinforced liner hose according to claim 6, characterized in that: The thermal insulation layer (9) is a polyurethane film.

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