Anti-corrosion and pressure-resistant protective sleeve pipe for underground laying of polyethylene pipe

Abstract

A kind of anticorrosive pressure-resistant protective sleeve for polyethylene pipeline underground laying, including outer sleeve, inner sleeve, the inner sleeve is movably inserted in outer sleeve, and one end of the inner sleeve is butted with the end of outer sleeve.The outer sleeve, the outer part of inner sleeve is daubed with anticorrosive coating.When one group of outer sleeve, inner sleeve is butted with another group of outer sleeve, inner sleeve, it can be self-adapting length, need to ensure that inner sleeve does not separate from outer sleeve, when the polyethylene pipeline inside needs to be overhauled, after screw is removed, inner sleeve is pushed into outer sleeve, so that polyethylene pipeline is partially unfolded, facilitate later overhauling.

Description

Technical Field

[0001] This utility model belongs to the field of polyethylene pipeline laying technology, and in particular relates to a corrosion-resistant and pressure-resistant protective sleeve for underground laying of polyethylene pipelines. Background Technology

[0002] The anti-corrosion and pressure-resistant protective sleeve for underground polyethylene pipelines is an outer protective structure designed to withstand complex underground environments (such as soil corrosion, ground pressure, and foundation settlement). Its core function is to protect the internal polyethylene pipeline from damage and extend the service life of the entire pipeline.

[0003] When a polyethylene pipe partially ruptures and the soil is excavated, the internal pipes are continuous, and the external pipes cannot be moved after being disassembled. The only way to open and repair the pipes is to completely cut off the internal pipes. This makes it inconvenient to repair the conventional sleeve protection structure again.

[0004] To address these issues, we propose a corrosion-resistant and pressure-resistant protective sleeve for underground polyethylene pipeline laying. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that conventional sleeve protection structures are inconvenient to repair again, and to propose a corrosion-resistant and pressure-resistant protective sleeve for underground laying of polyethylene pipelines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A corrosion-resistant and pressure-resistant protective sleeve for underground laying of polyethylene pipelines includes an outer sleeve and an inner sleeve. The inner sleeve is movably inserted into the outer sleeve, and one end of the inner sleeve is mated with one end of the outer sleeve. Utilizing a contraction structure of the outer and inner sleeves, when one set of outer and inner sleeves is connected to another set, the length can adapt automatically, ensuring that the inner sleeve does not detach from the outer sleeve. When maintenance of the internal polyethylene pipeline is required, the screws are removed, and the inner sleeve is pushed into the outer sleeve, partially unfolding the polyethylene pipeline for convenient later maintenance.

[0007] Preferably, the outer sleeve and inner sleeve are coated with an anti-corrosion coating. The anti-corrosion coating on the outer sleeve and inner sleeve protects them.

[0008] Preferably, the outer sleeve includes a first tube body, one end of which is fixedly connected to a first flange. A screw is passed through the first flange and connected to another set of inner sleeves for installation.

[0009] Preferably, the outer sleeve further includes a reinforcing ring, which is fixedly connected to the outside of the first tube body. The reinforcing ring increases the pressure resistance of the first tube body.

[0010] Preferably, the inner sleeve includes a second tube body, one end of which is fixedly connected to a second flange, which is mated with the first flange. Screws are passed through and tightened onto the mating first and second flanges in both sets to connect the two sets of outer and inner sleeves.

[0011] Preferably, the inner sleeve further includes a limiting block, which is slidably engaged inside the first tube body. The limiting block is slidably installed inside the first tube body to prevent the second tube body from slipping out.

[0012] In summary, the technical effects and advantages of this utility model are as follows: By utilizing the shrinkable structure of the outer and inner sleeves, one set of outer and inner sleeves can adapt to the length when connected with another set of outer and inner sleeves. It is necessary to ensure that the inner sleeve does not detach from the outer sleeve. When it is necessary to inspect the internal polyethylene pipe, the screws are removed and the inner sleeve is pushed into the outer sleeve, so that the polyethylene pipe is partially unfolded, which facilitates later maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the outer sleeve structure of this utility model; Figure 3 This is a schematic diagram of the inner sleeve structure of this utility model.

[0014] In the diagram: 2. Outer sleeve; 3. Inner sleeve; 21. First pipe body; 22. First flange; 23. Reinforcing ring; 31. Second pipe body; 32. Limiting block; 34. Second flange. Detailed Implementation

[0015] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments.

[0016] like Figure 1 As shown, a corrosion-resistant and pressure-resistant protective sleeve for underground laying of polyethylene pipelines includes an outer sleeve 2 and an inner sleeve 3. The inner sleeve 3 is movably inserted into the outer sleeve 2, and one end of the inner sleeve 3 is mated with one end of the outer sleeve 2. Utilizing the contraction structure of the outer sleeve 2 and inner sleeve 3, when one set of outer sleeves 2 and inner sleeves 3 is mated with another set, the length can adapt to different needs. To ensure that the inner sleeve 3 does not detach from the outer sleeve 2, and when maintenance of the internal polyethylene pipeline is required, the screws are removed, and the inner sleeve 3 is pushed into the outer sleeve 2, causing the polyethylene pipeline to be partially unfolded.

[0017] like Figure 1As shown, the outer sleeve 2 and the inner sleeve 3 are coated with an anti-corrosion coating. The anti-corrosion coating on the outer surface of the outer sleeve 2 and the inner sleeve 3 protects the outer sleeve 2 and the inner sleeve 3.

[0018] like Figure 1 and 2 As shown, the outer sleeve 2 includes a first tube body 21, one end of which is fixedly connected to a first flange 22. A screw is passed through the first flange 22 and connected to the inner sleeve 3 of another set for installation.

[0019] like Figure 1 and 2 As shown, the outer sleeve 2 also includes a reinforcing ring 23, which is fixedly connected to the outside of the first tube body 21. The reinforcing ring 23 increases the pressure resistance of the first tube body 21.

[0020] like Figure 1 , 2 As shown in Figure 3, the inner sleeve 3 includes a second pipe body 31, one end of which is fixedly connected to a second flange 34, which is mated with the first flange 22. Screws are passed through the mating first flange 22 and second flange 34 in both sets and tightened to fix them, thus mating the two sets of outer sleeves 2 and inner sleeves 3.

[0021] like Figure 1 , 2 As shown in Figure 3, the inner sleeve 3 also includes a limiting block 32, which is slidably engaged inside the first tube body 21. The limiting block 32 is slidably installed inside the first tube body 21 to prevent the second tube body 31 from slipping out of the second tube body 31.

[0022] Working principle: Utilizing the contraction structure of the outer sleeve 2 and inner sleeve 3, when one set of outer sleeve 2 and inner sleeve 3 is connected to another set of outer sleeve 2 and inner sleeve 3, it can adapt to the length. It is necessary to ensure that the inner sleeve 3 does not detach from the outer sleeve 2. When it is necessary to inspect the internal polyethylene pipe, after removing the screws, the inner sleeve 3 is pushed into the outer sleeve 2, so that the polyethylene pipe is partially unfolded.

[0023] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed by the utility model, based on the technical solution and the utility model concept, should be included within the protection scope of the utility model.

[0024] The description briefly mentions the application direction of the utility model in relation to existing technologies known to those skilled in the art without modification, and combines them with the utility model to form a complete technology; it avoids excessive popularization of technologies known to those skilled in the art, in order to help those skilled in the art quickly understand the main content of the utility model.

Claims

1. A corrosion-resistant and pressure-resistant protective sleeve for underground laying of polyethylene pipelines, characterized in that: The device includes an outer sleeve (2) and an inner sleeve (3). The inner sleeve (3) is movably inserted into the outer sleeve (2). One end of the inner sleeve (3) is connected to one end of the outer sleeve (2). The outer sleeve (2) includes a first tube body (21). One end of the first tube body (21) is fixedly connected to a first flange (22). The inner sleeve (3) includes a second tube body (31). One end of the second tube body (31) is fixedly connected to a second flange (34). The second flange (34) is connected to the first flange (22). The inner sleeve (3) also includes a limiting block (32). The limiting block (32) is slidably locked inside the first tube body (21).

2. The anti-corrosion and pressure-resistant protective sleeve for underground laying of polyethylene pipelines according to claim 1, characterized in that: The outer sleeve (2) and inner sleeve (3) are coated with an anti-corrosion coating.

3. The anti-corrosion and pressure-resistant protective sleeve for underground laying of polyethylene pipelines according to claim 1, characterized in that: The outer tube (2) also includes a reinforcing ring (23), which is fixedly connected to the outside of the first tube body (21).

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