Anti-corrosion structure for through-wall underground part of water supply and drainage pipeline

Abstract

The utility model discloses an anti-corrosion structure for a through-wall underground part of a water supply and drainage pipeline, which is provided with a reinforcing layer for reinforcing the pipeline, an isolating layer capable of sealing the reinforcing layer is arranged outside the reinforcing layer, a protective layer is arranged between the isolating layer and a base, and the protective layer can keep the connection stability of the isolating layer and the base. The problems that an existing old pipeline root repairing structure is high in cost and extremely inconvenient to use in the actual using process are solved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline maintenance technology, specifically to an anti-corrosion structure for the part of water supply and drainage pipelines that penetrate walls and enter the ground. Background Technology

[0002] In my country, numerous hydropower stations, pumping stations, and sewage treatment plants have been in stable operation for many years. During the initial construction of these facilities, limited by the prevailing technological understanding and cost considerations, the corrosion prevention of pipelines at their penetration points (where they pass through walls and underground) was not adequately considered. These penetration points are exposed to a complex environment, experiencing close contact with walls and soil, where moisture and electrolytes can chemically corrode the pipelines. Furthermore, during operation, these areas are subject to varying degrees of stress, making the pipeline's anti-corrosion layer more susceptible to damage and accelerating the corrosion process.

[0003] As operating time increases, rust, perforation, and water penetration commonly occur at the base of pipes without specialized anti-corrosion treatment. Once water penetration occurs, the severe corrosion of the pipe's inner wall significantly reduces its material properties, rendering it incapable of meeting the requirements for weld repair. Forced welding may even lead to pipe rupture and other more serious safety hazards. This presents numerous difficulties for repairing such pipe problems using conventional pipe repair structures. Due to the poor condition of the pipes, special materials and complex processes are often required for effective repair and to ensure continued normal use, which undoubtedly increases repair costs significantly. Moreover, due to the unique location of the pipes—their roots penetrating walls and underground—repair work is carried out in confined spaces, making operation inconvenient. Simultaneously, consideration must be given to avoiding disruption to surrounding facilities and equipment, making repair work extremely difficult, inefficient, and costly. Consequently, using conventional pipe repair structures is not only costly but also highly inconvenient for maintenance. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the existing old pipe root repair structure is not only costly, but also extremely inconvenient in actual use, and to provide a corrosion protection structure for the part of water supply and drainage pipes that pass through walls and enter the ground.

[0005] To address the shortcomings of the aforementioned technical problems, the present invention provides the following technical solution: a corrosion-resistant structure for the wall-penetrating and ground-entering section of a water supply and drainage pipeline, which has a reinforcing layer for reinforcing the pipeline, an isolation layer for sealing the reinforcing layer, and a protective layer between the isolation layer and the substrate, wherein the protective layer can maintain the connection stability between the isolation layer and the substrate.

[0006] As a further optimization of the anti-corrosion structure of the water supply and drainage pipeline penetrating the wall and entering the ground according to this utility model: the isolation layer includes a partition layer disposed on the reinforcement layer and a restriction layer connected to the protective layer, and a filler is provided between the partition layer and the restriction layer.

[0007] As a further optimization of the anti-corrosion structure for the wall-penetrating and ground-entering part of the water supply and drainage pipeline of this utility model: the partition layer is a stainless steel metal mesh.

[0008] As a further optimization of the anti-corrosion structure for the wall-penetrating and ground-entering part of the water supply and drainage pipeline of this utility model: the limiting layer is stainless steel sheet.

[0009] As a further optimization of the anti-corrosion structure of the water supply and drainage pipeline penetrating the wall and entering the ground in this utility model, the filler is a leak-stopping agent.

[0010] As a further optimization of the anti-corrosion structure for the wall-penetrating and ground-entering part of the water supply and drainage pipeline of this utility model: the spacing between the partition layer and the restriction layer is more than 10mm.

[0011] As a further optimization of the anti-corrosion structure for the wall-penetrating and ground-entering part of the water supply and drainage pipeline of this utility model: the reinforcement layer is a metal repair agent or casting adhesive.

[0012] As a further optimization of the anti-corrosion structure for the wall-penetrating and ground-entering part of the water supply and drainage pipeline of this utility model: the protective layer is epoxy mortar.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention enhances the mechanical strength of corresponding parts of the pipeline by setting a reinforcing layer, making it more able to withstand external pressure and stress, while effectively improving the corrosion resistance of the area. An isolation layer and a protective layer are cleverly integrated around the reinforcing layer. The isolation and protective layers work together to completely isolate the reinforcing layer from the outside air, preventing oxidation or corrosion due to air contact. Simultaneously, a stable connection is achieved with the concrete substrate, ensuring the continuous and stable reinforcement and protection effect of the pipeline. This significantly improves the mechanical properties and corrosion resistance of the pipeline at the reinforced location. Furthermore, the reinforcing, isolation, and protective layers all use commonly used anti-corrosion filling materials. These materials are not only reliable and effectively protect the pipeline's performance, but also cost-effective, allowing for low maintenance costs while maintaining good pipeline performance. In addition, the overall structure is simple and clear, making it convenient and easy to implement during actual maintenance and construction, greatly improving work efficiency and reducing construction difficulty and maintenance workload. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of this utility model;

[0016] The markings in the diagram are: 1. Pipe; 2. Reinforcement layer; 3. Insulation layer; 301. Separation layer; 302. Filler; 303. Restriction layer; 4. Protective layer; 5. Substrate. Detailed Implementation

[0017] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0018] like Figure 1 As shown, a corrosion protection structure for the wall-penetrating and ground-entry section of a water supply and drainage pipeline includes a reinforcement layer 2 installed on the outer wall of the pipeline 1. Its main function is to reinforce the pipeline 1. Specifically, the reinforcement layer 2 can be made of metal repair agent or casting adhesive. These two materials can effectively enhance the structural strength of the metal pipeline 1, significantly improving not only the corrosion resistance of the pipeline 1 but also its mechanical strength.

[0019] Outside the reinforcing layer 2, an insulating layer 3 is provided. The function of the insulating layer 3 is to completely seal the reinforcing layer 2, thereby ensuring that the reinforcing layer 2 continuously and effectively reinforces the outer wall of the pipe 1. The insulating layer 3 is tightly connected to the base 5 through the protective layer 4. This design greatly enhances the tightness of the connection between the base 5, the insulating layer 3, and the reinforcing layer 2, thus significantly improving the strength of the foundation support. It is worth mentioning that the protective layer 4 uses epoxy mortar. Epoxy mortar not only has excellent bonding properties, effectively ensuring the integrity of the entire structure and the synergistic working ability between its parts, but also has multiple functions such as repair, corrosion prevention, wear resistance, and protection. It can assist the reinforcing layer 2 and the insulating layer 3 to further strengthen the protection of the pipe 1, thereby significantly improving the corrosion resistance of the outer periphery of the pipe 1.

[0020] The insulating layer 3 consists of a separating layer 301 and a restricting layer 303. The separating layer 301 is laid on top of the reinforcing layer 2 and is distributed at a certain interval with the restricting layer 303. A filler 302 is injected between the separating layer 301 and the restricting layer 303. After the filler 302 solidifies, it can effectively isolate the reinforcing layer 2 from the air, thus ensuring that the reinforcing layer 2 can always stably perform its function of reinforcing the pipeline 1 and effectively improve the corrosion resistance of the pipeline 1. Specifically, the separating layer 301 is made of stainless steel mesh. The stainless steel mesh can be tightly adhered to the surface of the reinforcing layer 2, which not only enhances the structural strength of the reinforcing layer 2 itself and further improves the corrosion resistance of the pipeline 1, but also provides stable separation for the filler 302. This ensures that the filler 302, under the constraint of the restricting layer 303, solidifies evenly on the outer periphery of the reinforcing layer 2, thereby maintaining a good air isolation effect. The limiting layer 303 is made of stainless steel sheet. Stainless steel sheet not only stably defines the position of the filler 302, but also further improves the overall structural strength, significantly enhancing the corrosion resistance and mechanical strength of pipe 1. The filler 302 can be a sealing compound. The sealing compound is in a fluid state before solidification, making it easy for workers to inject into the gap between the separating layer 301 and the limiting layer 303. Furthermore, the sealing compound solidifies quickly, rapidly isolating air from the reinforcing layer 2, thereby ensuring that the reinforcing layer 2 continuously provides reinforcement and protection for pipe 1.

[0021] The spacing between the separator layer 301 and the restriction layer 303 is set to 10mm. This spacing design allows the filler 302 to form an isolation layer 3 with sufficient strength and good sealing performance, thereby achieving a more thorough isolation between the reinforcement layer 2 and the air, effectively ensuring the reinforcement effect of the reinforcement layer 2 on the pipe 1.

[0022] In the actual construction process, firstly, the concrete base 5 is chiseled inwards at the root of pipe 1, exposing a space greater than 50mm around the outer circumference of pipe 1. Simultaneously, the exposed outer wall of pipe 1 is carefully cleaned of dust and impurities to ensure a clean and tidy surface. Next, the reinforcing layer 2 material is evenly applied to the outer wall of pipe 1. After application, a separating layer 301 is wrapped around the reinforcing layer 2. Immediately afterwards, a limiting layer 303 is installed around the separating layer 301, leaving a 10mm gap between the separating layer 301 and the limiting layer 303. Then, a sealant 302 is poured into the gap. After the sealant 302 has completely solidified, an epoxy mortar protective layer 4 is poured between the limiting layer 303 and the previously chiseled concrete base 5. Finally, the surface of the protective layer 4 is carefully smoothed to the ground or wall surface, thus completing the entire construction process. In addition, to further improve the corrosion resistance of pipe 1, the protective layer 4 can be appropriately raised 50mm above the ground or wall, thereby completely covering the part of pipe 1 that was originally exposed outside the wall or ground, effectively enhancing the corrosion resistance of this part of pipe 1.

[0023] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. A corrosion-resistant structure for the portion of water supply and drainage pipes penetrating walls and entering the ground, characterized in that: The utility model discloses a kind of pipe reinforcement structures, which has reinforcement layer (2) for reinforcing pipeline (1), reinforcement layer (2) is provided with insulating layer (3) that can seal it, and protective layer (4) is provided between insulating layer (3) and substrate (5), and protective layer (4) can keep the connection stability of insulating layer (3) and substrate (5).

2. The corrosion protection structure for a water supply and drainage pipeline wall penetration and ground entry portion according to claim 1, characterized in that: The insulating layer (3) includes a separation layer (301) disposed on the reinforcement layer (2) and a limiting layer (303) connected with the protective layer (4), and a filler (302) is disposed between the separation layer (301) and the limiting layer (303).

3. The corrosion protection structure for a water supply and drainage pipeline wall penetration and ground entry portion according to claim 2, characterized by: The separation layer (301) is a stainless steel mesh.

4. The corrosion protection structure for a water supply and drainage pipeline wall penetration and ground entry portion according to claim 2, characterized by: The limiting layer (303) is a stainless steel sheet.

5. The corrosion protection structure for a water supply and drainage pipeline wall penetration and ground entry portion according to claim 2, characterized in that: The filler (302) is a leak stopper.

6. The corrosion protection structure for a water supply and drainage pipeline wall penetration and ground entry portion according to claim 2, characterized in that: The distance between the separation layer (301) and the limiting layer (303) is more than 10 mm.

7. The corrosion protection structure for a water supply and drainage pipeline wall penetration and ground penetration portion according to claim 1, characterized in that: The reinforcement layer (2) is a metal repair agent or a foundry glue.

8. The corrosion protection structure for a water supply and drainage pipeline wall penetration and ground entry portion according to claim 1, characterized in that: The protective layer (4) is an epoxy mortar.

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