Lining pipe structure for pipeline repair

Abstract

The utility model discloses a lining pipe structure for pipeline repair. The lining pipe structure comprises a main pipe body with two open ends, a self-sealing strip arranged at one open end and used for sealing the open end, and an elastic belt arranged on the other open end by a circle. The main pipe body comprises a wrapping hose layer arranged on the outer side and used for wrapping an internal structure, a connecting layer compounded to the inner side of the wrapping hose layer, a carrier layer fixed to the inner side through the connecting layer, and resin adhesive poured from the open end of the main pipe body and adsorbed to the carrier layer. The lining pipe structure for repairing the pipeline is particularly used for the back flushing type repairing technology of the lining pipe of the pipeline, the main pipe body can be produced in batches, the production efficiency is high, and the production process is simple.

Description

Technical Field

[0001] This utility model relates to the field of pipeline repair technology, and in particular to an inner lining pipe structure for pipeline repair. Background Technology

[0002] Urban drainage pipes are a vital infrastructure supporting social development and ensuring people's lives. The main urban drainage pipes are constructed using materials such as cement, plastic, and cast iron. Pipeline maintenance is essential to ensure their proper functioning. Currently, the known method for repairing collapsed pipes involves excavating the collapsed area to locate and repair it, followed by backfilling to restore the original surface. However, this excavation and repair method is not only time-consuming and labor-intensive but also expensive.

[0003] Therefore, related technologies have invented and designed trenchless methods, specifically referring to the use of inner-lined flexible hoses to add a rigid lining inside the pipe for repair. The hose material is mostly PVC or resin. After insertion, the hose is cured by light or heat to form a lining that fits tightly against the inner wall of the pipe. This method has advantages such as simplicity, fast forming, and short construction time, and is therefore widely used in construction. However, existing pipe repair hoses require the use of internal instruments to apply adhesive before attaching the hose to the repair location, and also require internal pipe support and limiting devices for support. The repair process is very complex, and the repair quality cannot be fully guaranteed. Currently, there is no pipe repair hose specifically designed for inner-lined pipe backflushing repair technology, which means that some imperfections still exist in the repair process, and the repair quality cannot be guaranteed. Summary of the Invention

[0004] In view of this, the present invention provides a pipe liner structure for pipeline repair, specifically a backflush type liner hose, which has the characteristics of simple structure, easy mass production, and guaranteed repair effect.

[0005] This utility model solves the above problems through the following technical means:

[0006] The pipe liner structure for pipe repair of this utility model includes a main body with openings at both ends, a self-sealing strip set at one opening end for sealing the opening end, and an elastic band set around the other opening end.

[0007] The main body includes a tubular covering layer disposed on the outside for covering the internal structure, a connecting layer composited on the inside of the covering layer, a carrier layer fixed on the inside by the connecting layer, and a resin adhesive injected from the opening end of the main body and adsorbed onto the carrier layer.

[0008] Preferably, the shrinkage dimension of the elastic band is smaller than the circumference of the main tube.

[0009] Preferably, the covered hose layer is a hose made of ultra-wear-resistant modified polyethylene material.

[0010] Preferably, the outer side of the coating layer is provided with an anti-corrosion coating for corrosion protection, as well as to provide a smooth surface and reduce fluid resistance.

[0011] Specifically, the connecting layer has a mesh-woven structure.

[0012] Preferably, a portion of the main body near the end of the elastic band is left unadsorbed to serve as a fixing end for fixing to the air outlet of the backflushing device.

[0013] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0014] This utility model discloses a pipe liner structure for pipe repair, specifically for pipe liner backflushing repair technology. The main pipe body can be mass-produced with high production efficiency and simple production process. During repair, it is cut to the required size as needed. Self-sealing strips and elastic bands are then installed at both open ends. Resin is injected through the opening at the elastic band end, and a press is used to roll it back and forth until the resin is evenly distributed inside. The self-sealing strips prevent resin from flowing out of the openings, thus avoiding resin waste and cleaning difficulties caused by overflow. In practical use, the open end of the main pipe body with the elastic band is blown out from inside the backflushing equipment towards the air outlet, and the end is flipped outwards and fitted onto the backflushing device. On the outside of the air outlet of the blowing equipment, the elastic band can initially limit the position by clamping the outside of the air outlet, and then fix it with other fixing rings to enhance the sealing and firmness of the fixation. The air blown out from the air outlet flips the main body forward and blows it out, so that the carrier layer covered with resin glue inside it is tightly bonded to the inner wall of the pipe. At this time, the covering hose layer becomes the inner wall of the repair pipe, ensuring the cleanliness of the inner wall of the repair pipe. Until the self-sealing strip of the main body is blown out of the pipe, the closed end is blown in by the internal air, causing the inner liner to bulge and fit tightly against the inner wall of the pipe, thereby ensuring the flatness of the repair pipe. Then, after waiting for it to dry, the excess part is cut off to complete the work of installing a new layer of internal pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the inner lining pipe structure for pipeline repair according to this utility model.

[0016] like Figure 1 Main body-1, covered hose layer-11, connecting layer-12, carrier layer-13, resin adhesive-14, self-sealing strip-2, elastic band-3. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1 As shown: The pipe repair liner structure described in this embodiment includes a main body 1 with openings at both ends, a self-sealing strip 2 disposed at one opening end for sealing the opening end, and an elastic band 3 disposed around the other opening end; the main body 1 includes a covered flexible tube layer 11 disposed on the outside for covering the internal structure, a connecting layer 12 composited on the inside of the covered layer, a carrier layer 13 fixed on the inside by the connecting layer 12, and a resin adhesive 14 injected from the opening end of the main body 1 and adsorbed onto the carrier layer 13.

[0020] The pipe liner structure described in this embodiment is specifically used in the pipe liner backflushing repair technology. The main pipe body 1 can be mass-produced with high production efficiency and simple production process. During specific repairs, it is cut to the required size as needed. Then, self-sealing strips 2 and elastic bands 3 are respectively set at the two open ends. Resin glue 14 is injected through the opening at the end of the elastic band 3, and a press is used to roll it back and forth until the resin glue 14 is evenly distributed inside. The self-sealing strip 2 prevents the resin glue 14 from flowing out of the opening, thereby avoiding the waste of resin glue 14 and the difficulty of cleaning due to overflow. In specific use, the open end of the main pipe body 1 with the elastic band 3 is blown out from the inside of the backflushing equipment to the air outlet, and the end is turned outwards and sleeved. Located outside the air outlet of the backflushing device, the elastic band 3 can initially limit the position of the air outlet, and then be fixed by other fixing rings to enhance the sealing and firmness of the fixation. The air blown out from the air outlet flips the main body 1 forward and blows it out, so that the carrier layer 13 covered with resin glue 14 inside it is tightly bonded to the inner wall of the pipe. At this time, the covering hose layer 11 becomes the inner wall of the repair pipe, ensuring the cleanliness of the inner wall of the repair pipe. Until the self-sealing strip 2 of the main body 1 is blown out of the pipe, the closed end is blown out by the internal air, causing the inner liner tube to bulge and fit tightly against the inner wall of the pipe, thereby ensuring the flatness of the repair pipe. Then, after waiting for it to dry, the excess part is cut off to complete the operation of a new inner pipe.

[0021] In a preferred embodiment of this invention, the shrinkage dimension of the elastic band 3 is smaller than the circumference of the main tube 1, and the opening of the main tube 1 is set as a constricted structure, which can be tightly bound to the air outlet of the backflushing device, further enhancing the connection strength.

[0022] Specifically, the covered hose layer 11 is a hose made of ultra-wear-resistant modified polyethylene material, which has excellent wear resistance, impact resistance and weather resistance, and is suitable for long-term use under various harsh environmental conditions. It can also resist the corrosion of ultraviolet rays and other chemicals.

[0023] As a preferred embodiment of this example, the outer side of the coating layer is provided with an anti-corrosion coating (not shown in the figure), specifically using silicone material for coating. Silicone has excellent high temperature resistance, chemical corrosion resistance and good lubricity. The silicone coating can effectively reduce friction in fluid transportation, improve fluid flow efficiency, and is suitable for repairing pipelines of fluids such as water and oil, and prevent internal media from corroding the pipeline.

[0024] Specifically, the connecting layer 12 has a mesh braided structure, which not only makes the connection between the covered hose layer 11 and the carrier layer 13 tighter and stronger, but also provides the main body 1 with tensile strength and deformation resistance.

[0025] In a preferred embodiment of this invention, for ease of installation and fixation, a portion of non-adsorbent resin adhesive 14 is reserved at the end of the main body 1 near the elastic band 3, which serves as a fixing end to be fixed to the air outlet of the backflushing device.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pipe liner structure for pipeline repair, characterized in that: The main body includes a main tube with openings at both ends, a self-sealing strip disposed at one opening end for sealing the opening end, and an elastic band disposed around the other opening end; the main tube includes a covering hose layer disposed on the outside for covering the internal structure, a connecting layer composited on the inside of the covering hose layer, a carrier layer fixed on the inside by the connecting layer, and resin glue injected from the opening end of the main tube and adsorbed onto the carrier layer.

2. The pipe liner structure for pipeline repair according to claim 1, characterized in that: The shrinkage dimension of the elastic band is smaller than the circumference of the main tube.

3. The pipe liner structure for pipeline repair according to claim 1, characterized in that: The hose covering layer is a hose made of ultra-wear-resistant modified polyethylene material.

4. A pipe liner structure for pipeline repair according to claim 1 or 3, characterized in that: The outer side of the covered hose layer is provided with an anti-corrosion coating for corrosion protection, as well as to provide a smooth surface and reduce fluid resistance.

5. The pipe liner structure for pipeline repair according to claim 1, characterized in that: The connecting layer has a mesh-woven structure.

6. The pipe liner structure for pipeline repair according to claim 1, characterized in that: A portion of the main body near the end of the elastic band is left unadsorbed to serve as a fixing end for fixing to the air outlet of the backflushing device.

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