Composite reinforced hose for pipeline lining non-woven fabric
Through the three-layer structural design of seamless cylindrical reinforced fiber tube blank and anti-permeability layer, the existing non-woven hose has insufficient pressure bearing capacity and limited flip length, and the effect of high strength and long-distance flip is achieved.
Patent Information
- Application Number
- CN202422391457.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Due to the joints, insufficient pressure bearing capacity and limited single-time flip length, existing non-woven hoses are difficult to meet the needs of high strength and long-distance flip.
A seamless cylindrical reinforced fiber tube blank and anti-permeability layer is used to form a three-layer non-woven composite hose through braiding and thermal bonding processes to ensure the overall pressure bearing capacity and flip length.
The high pressure bearing capacity and long one-time flip length of seamless structure are achieved, improving the overall performance of the hose and suitable for a wider range of pipe repair applications.
Smart Images
Figure CN223004665U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of anti-corrosion reinforcement repair of pipeline linings, and particularly relates to a non-woven fabric composite reinforced hose for pipeline linings. Background Art
[0002] According to the data, the service life of the old pipeline repaired by the inverting method with a lined composite hose can be extended by more than 30 years. The inverting method for repairing an old pipeline with a lined composite hose uses a fiber-reinforced hose with an anti-permeation layer and impregnated with a special resin as the forming material for the new pipeline. The old pipeline serves as the inverting channel and the forming die cavity for the new pipeline. A special hose conveyor is used to invert and feed the hose into the old pipeline, so that the resin layer of the hose adheres to the inner wall of the old pipeline, and the anti-permeation layer becomes the inner wall surface of the new pipeline. The resin impregnated in the liner is cured by heating or room temperature curing to form a firm steel-plastic composite pipe.
[0003] At present, most of the non-woven fabric hoses for pipeline linings on the market are seamed non-woven fabric hoses. Since the non-woven fabric hose for pipeline lining is obtained by rolling the lining material into a cylinder and then sewing the seams, although the seams are treated, the pressure-bearing capacity is still not good enough, and the one-time inverting length is limited. Summary of the Utility Model
[0004] In order to solve the problems in the background art, the utility model provides a non-woven fabric composite reinforced hose for pipeline linings. In this application, both the cylindrical reinforced fiber tube blank and the anti-permeation layer have no seams, with strong pressure-bearing capacity and long one-time inverting length.
[0005] The technical solution provided by the utility model is: a non-woven fabric composite reinforced hose for pipeline linings, including an anti-permeation layer, a cylindrical reinforced fiber tube blank, and a non-woven fabric layer. The cylindrical reinforced fiber tube blank is a seamless cylindrical structure knitted by a knitting machine; the non-woven fabric layer is woven and connected with the cylindrical reinforced fiber tube blank, and the woven connection has a greater connection strength. After weaving the non-woven fabric layer, the strength of the cylindrical reinforced fiber tube blank is improved. The anti-permeation layer is vulcanized and thermally bonded or hot extrusion coated and bonded with the cylindrical reinforced fiber tube blank, and the anti-permeation layer has no seams; since both the cylindrical reinforced fiber tube blank and the anti-permeation layer have no seams, the overall pressure-bearing capacity is strong and the one-time inverting length is longer.
[0006] A further technical solution is: the materials of the non-woven fabric layer and the cylindrical reinforced fiber tube blank are organic materials or inorganic materials.
[0007] A further technical solution is: the material of the anti-permeation layer is a plastic or rubber material.
[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model includes a three-layer structure, namely an anti-permeation layer, a cylindrical reinforced fiber tube blank, and a non-woven fabric layer. The cylindrical reinforced fiber tube blank is a seamless cylindrical structure woven by a knitting machine; the non-woven fabric layer and the cylindrical reinforced fiber tube blank are woven and connected by a weaving machine, and the connection strength of the woven connection is greater, and the strength of the cylindrical reinforced fiber tube blank is improved after weaving the non-woven fabric layer; the cylindrical reinforced fiber tube blank is vulcanized and thermally bonded or hot extrusion coated and bonded with the anti-permeation layer, and there are no gaps in the anti-permeation layer. Since there are no seams in both the cylindrical reinforced fiber tube blank and the anti-permeation layer, the formed integral has strong pressure-bearing capacity and a longer one-time flipping length. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 is a cross-sectional view of the cylindrical reinforced fiber tube blank in the present utility model.
[0010] Figure 2 is a cross-sectional view of the cylindrical reinforced fiber tube blank and the non-woven fabric layer woven by a weaving machine.
[0011] Figure 3 is the anti-permeation layer and Figure 2 a cross-sectional view of vulcanized thermal bonding.
[0012] Figure 4 is after Figure 3 a cross-sectional view of the flipped pipe after the step ends.
[0013] Figure 5 is after Figure 2 a cross-sectional view of the flipped pipe after the step ends.
[0014] Figure 6 is the anti-permeation layer and Figure 5 a cross-sectional view of hot extrusion coating bonding.
[0015] In the figure: 1. Anti-permeation layer; 2. Cylindrical reinforced fiber tube blank; 3. Non-woven fabric layer; 4. Weaving machine. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0017] This embodiment includes a three-layer structure, namely an anti-permeation layer 1, a cylindrical reinforced fiber tube blank 2, and a non-woven fabric layer 3.
[0018] Such as Figure 1As shown, the cylindrical reinforced fiber tube blank 2 is a seamless cylindrical structure woven by a knitting machine, and its size is customized according to the inner diameter size of the steel pipe to be lined. Since the cylindrical reinforced fiber tube blank 2 of this application has no seams, its strength is greater than that of the existing fiber layer with seams, and its pressure-bearing capacity is stronger.
[0019] As Figure 2 shown, the non-woven fabric layer 3 is arranged on the outer side of the cylindrical reinforced fiber tube blank 2. The non-woven fabric layer 3 and the cylindrical reinforced fiber tube blank 2 are woven and connected by a weaving machine 4. The connection strength of the woven connection is greater. After weaving the non-woven fabric layer 3, the strength of the cylindrical reinforced fiber tube blank 2 is improved, thereby improving the stiffness after being cured with glue during on-site use.
[0020] The materials of the non-woven fabric layer 3 and the cylindrical reinforced fiber tube blank 2 are organic materials or inorganic materials.
[0021] After the non-woven fabric layer 3 and the cylindrical reinforced fiber tube blank 2 are woven together, it is necessary to bond the anti-permeation layer 1 to the cylindrical reinforced fiber tube blank 2. In this application, there are two bonding processes for the two, namely vulcanization thermal bonding or hot extrusion coating bonding, which are introduced separately below.
[0022] I. The specific method of the vulcanization thermal bonding process is: Place the pipe after weaving the non-woven fabric shown in Figure 2 with the cylindrical reinforced fiber tube blank 2 on the vulcanization platform, insert an anti-permeation tube into the center of the pipe. As Figure 3 shown, the vulcanization platform passes high-temperature pressurized gas to both ends of the anti-permeation tube. Under the action of the high-temperature gas, the anti-permeation tube starts to vulcanize, and the anti-permeation tube is finally thermally bonded to the cylindrical reinforced fiber tube blank 2 to form the anti-permeation layer 1. After the vulcanization thermal bonding process is completed, turn the pipe over to the Figure 4 shown product.
[0023] II. The specific method of the hot extrusion coating bonding process is: First, turn the pipe after weaving the non-woven fabric shown in Figure 2 with the cylindrical reinforced fiber tube blank 2 to the Figure 5 state, and then place the Figure 5 pipe into the extrusion coating machine. Replace the extrusion end of the extrusion coating machine with an annular extrusion head matching the pipe. The anti-permeation layer 1 extruded by the extrusion coating machine is thermally bonded to the pipe to obtain the Figure 6 shown product.
[0024] The material of the anti-permeation layer 1 is a plastic or rubber material.
[0025] In summary, there are no seams in both the cylindrical reinforced fiber tube blank 2 and the anti-permeation layer 1 in this application. Therefore, the overall pressure-bearing capacity formed is stronger than that of the hose with seams, so the one-time flipping length of this application is longer.
Claims
1. A non-woven composite reinforced hose for pipeline lining, characterized in that: The invention comprises an anti-permeability layer (1), a cylindrical reinforced fiber tube blank (2) and a non-woven fabric layer (3); the cylindrical reinforced fiber tube blank (2) is a knitted cylindrical seamless structure; the non-woven fabric layer (3) is woven and connected to the cylindrical reinforced fiber tube blank (2); the anti-permeability layer (1) is vulcanized and hot-bonded to the cylindrical reinforced fiber tube blank (2) or hot-extrusion-bonded; and the anti-permeability layer (1) has no seams.
2. The non-woven composite reinforced hose for pipeline lining according to claim 1, characterized in that: The non-woven fabric layer (3) and the cylindrical reinforced fiber tube blank (2) are made of organic materials or inorganic materials.
3. The non-woven composite reinforced hose for pipeline lining according to claim 1, characterized in that: The material of the anti-permeability layer (1) is plastic or rubber material.