Helically wound repair profile for pressure water supply pipelines

Abstract

The utility model relates to the technical field of water supply pipeline trenchless repair, specifically relates to a spiral winding repair section bar for pressure water supply pipeline, contain the base body that can spiral winding into tubular, the steel band is inlayed in the base body, the inner protection film is equipped with in the base body inner wall, the base body outer wall is equipped with a plurality of reinforcing rib, the base body both ends are connected with female buckle and male buckle respectively, and the male buckle is formed locking structure when winding and is successively clamped into female buckle. The utility model integrates the section bar of the formed pipeline and the steel band for strengthening the pipeline, and increases the steel wire rope to enhance the pulling force, greatly improves the pipeline strength, and is suitable for pressure pipeline repair. Moreover, the utility model adopts multiple sealing connections, ensures no leakage, and the Teflon film further enhances the durability of the pipeline, and the pipeline protection performance is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of trenchless repair technology for water supply pipelines, specifically to a spiral winding repair profile for pressure water supply pipelines. Background Technology

[0002] After long-term use, water supply pipes will experience aging and damage due to various reasons. However, most large pipes are buried underground, and the cost of excavation and replacement is very high. Therefore, spiral winding pipes are chosen for repair.

[0003] For example, Chinese utility model patent CN206398261U discloses a trenchless pipe repair spiral winding profile. The profile is spirally wound and sequentially snapped together to form a new pipe structure, which is then placed inside the damaged pipe to replace it. However, because the winding is required, the materials used to form the pipe have a certain degree of flexibility. This results in the repaired pipe itself having low strength. While this is not affected when used for atmospheric pressure transport, it is difficult to meet the pipe strength requirements for repairing pressure pipelines, such as a DN2000 PCCP prestressed reinforced concrete pipe with an operating pressure of 0.8MPa.

[0004] Therefore, it is essential to provide a spiral winding repair material for water supply pipelines that can withstand operating pressures above 0.8 MPa. Utility Model Content

[0005] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a reasonably designed spiral winding repair profile for pressure water supply pipelines, which can solve the above-mentioned defects.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A spiral wound repair profile for pressurized water supply pipelines includes a substrate that can be spirally wound into a tubular shape, a steel strip embedded in the substrate, an inner protective membrane on the inner wall of the substrate, multiple reinforcing ribs on the outer wall of the substrate, and female and male buckles connected to both ends of the substrate respectively. During winding, the male buckle is sequentially engaged into the female buckle to form a locking structure.

[0008] Preferably, the inner protective film is a Teflon film, and both ends of the substrate are provided with matching bevels, with both ends of the inner protective film extending to the ends of the bevels.

[0009] Preferably, the male buckle has multiple sets of protruding locking heads, and the female buckle has matching locking slots, with the male buckle being inserted into the locking slots for engagement.

[0010] Preferably, the male and female buckles are multiple connected, and the number of male and female buckles is the same. The bottom end of the male buckle located at the outermost edge is provided with a first positioning protrusion, and the inner end of the female buckle located on the base is provided with a second positioning protrusion. The surfaces of the first positioning protrusion and the second positioning protrusion are provided with interlocking teeth.

[0011] Preferably, sealing strip one and sealing strip two are respectively provided on the two inclined surfaces of the substrate. After the substrate is installed, sealing strip two and sealing strip one are attached and pressed together.

[0012] Preferably, a steel wire rope is provided at the root of each reinforcing rib within the matrix.

[0013] The beneficial effects of this utility model after adopting the above structure are:

[0014] 1. This utility model integrates the profile of the formed pipe with the steel strip that reinforces the pipe, and adds steel wire rope to enhance the tensile strength of the reinforcing ribs, thereby increasing the strength of the connection between the ribs and the base, which greatly improves the strength of the repaired pipe and is suitable for the repair of pressure pipes.

[0015] 2. This utility model adopts multiple sealing connections to ensure no leakage, and the Teflon membrane further enhances the durability of the pipeline, greatly improving the pipeline's protective performance. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the present invention.

[0017] Figure 2 yes Figure 1 Enlarged view of section A;

[0018] Figure 3 yes Figure 1 Enlarged view of section B;

[0019] Figure 4 This is a partial structural diagram of the present invention after connection;

[0020] Figure 5 This is a schematic diagram of the structure of this utility model after installation.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Matrix; 2. Steel strip; 3. Reinforcing ribs; 4. Steel wire rope; 5. Inner protective film; 6. Female buckle; 7. Slot; 8. First positioning protrusion; 9. Male buckle; 10. Clip head; 11. Second positioning protrusion; 12. Sealing protrusion one; 13. Sealing protrusion two. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] A spiral-wound repair profile for pressurized water supply pipelines, such as Figures 1-4 As shown, the system includes a PVC substrate 1 that can be spirally wound into a tubular shape. A steel strip 2 is embedded inside the substrate 1, which enhances the overall strength of the formed pipe. The inner wall of the substrate 1 is provided with an inner protective film 5, which is a Teflon film with a low surface friction coefficient, low fluid resistance, and difficulty in dirt adhesion, ensuring its own cleanliness. Moreover, the use of a surface film method results in lower production costs. The outer wall of the substrate 1 is provided with multiple reinforcing ribs 3, and a steel wire rope 4 is provided at the root of each reinforcing rib 3 inside the substrate 1 to enhance the tensile strength of the reinforcing rib 3. The two ends of the substrate 1 are respectively connected to a female buckle 6 and a male buckle 9. During winding, the male buckle 9 is sequentially inserted into the female buckle 6 to form a locking structure.

[0025] The substrate 1 has matching inclined surfaces at both ends. After connection, the two inclined surfaces press against each other to form a seal. The inner protective film 5 extends to the ends of the inclined surfaces at both ends. After connection, the inner protective film 5 presses against each other to form a sealed protective layer.

[0026] The male buckle 9 has multiple sets of protruding locking heads 10, and the female buckle 6 has a matching locking groove 7. The male buckle 9 is inserted into the locking groove 7 for locking.

[0027] The male buckle 9 and the female buckle 6 are connected in multiples, and the number of male buckles 9 and female buckles 6 is the same. The bottom end of the male buckle 9 located at the outermost edge is provided with a first positioning protrusion 8. The inner end of the female buckle 6 located on the base 1 is provided with a second positioning protrusion 11. The surfaces of the first positioning protrusion 8 and the second positioning protrusion 11 are provided with interlocking teeth. After connection, they interlock with each other to prevent misalignment, enhance sealing performance, and reduce internal leakage.

[0028] On the two inclined surfaces of the base 1, there are sealing protrusion 12 and sealing protrusion 13 respectively. After the base 1 is installed, sealing protrusion 13 and sealing protrusion 12 are attached and pressed together to further ensure the sealing performance.

[0029] During installation, the profile is released and tightened along a spiral using a repair device, so that each male buckle 9 is fitted into the female buckle 6, forming a shape as follows: Figure 5 The pipe-like structure shown is a repair pipe lining the inner wall of the pipe, forming a new repair pipe.

[0030] The installation, connection, or setting methods of the components not detailed above are all common mechanical methods, and the specific structure, model, and coefficient indicators of all their components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be elaborated further.

[0031] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A spiral wound repair profile for pressurized water supply pipelines, characterized in that: The substrate (1) can be spirally wound into a tubular shape. A steel strip (2) is embedded in the substrate (1). An inner protective film (5) is provided on the inner wall of the substrate (1). Multiple reinforcing ribs (3) are provided on the outer wall of the substrate (1). A female buckle (6) and a male buckle (9) are respectively connected to both ends of the substrate (1). When winding, the male buckle (9) is inserted into the female buckle (6) in sequence to form a locking structure. A steel wire rope (4) is provided at the root of each reinforcing rib (3) in the substrate (1).

2. The spiral wound repair profile for pressurized water supply pipelines according to claim 1, characterized in that: The inner protective film (5) is a Teflon film, and the substrate (1) has matching inclined surfaces at both ends. Both ends of the inner protective film (5) extend to the ends of the inclined surfaces.

3. The spiral wound repair profile for pressurized water supply pipelines according to claim 2, characterized in that: On the two inclined surfaces of the substrate (1), there are sealing protrusions one (12) and sealing protrusion two (13), respectively. After the substrate (1) is installed, sealing protrusion two (13) and sealing protrusion one (12) are attached and pressed together.

4. A spiral wound repair profile for pressurized water supply pipelines according to claim 2, characterized in that: The male buckle (9) is provided with multiple sets of protruding clips (10), and the female buckle (6) has a matching clip groove (7) inside. The male buckle (9) is inserted into the clip groove (7) for snap-fit.

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