Novel plastic pipeline structure adopting trenchless process to replace original pipeline

Abstract

The utility model relates to a novel plastic pipeline structure for replacing an original pipeline by a trenchless process, which comprises a pipeline main body, and an outer wall lock catch step and a sealing ring groove are arranged on the outer wall of one end of the pipeline main body. An inner wall lock catch step is arranged on the inner wall of the other end of the pipeline body. After socket connection and installation, the lock catch steps of the outer wall and the inner wall of the pipeline are meshed with each other, and the sealing ring sleeved with the sealing ring groove in the outer wall of the pipeline is tightly attached to the inner wall of the pipeline, so that a good sealing effect is achieved. And the length of the pipeline main body is generally 400 to 1000 mm. The scheme has the characteristics of simplicity and high efficiency in construction, no damage to original facilities, remarkable economic benefits and the like.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering construction technology, specifically a novel plastic pipe structure that replaces existing pipes using a trenchless process. Background Technology

[0002] In today's society, due to the long service life and uneven stress on the soil structure, underground drainage and sewage pipes in municipal engineering projects are prone to cracking, leakage, or even collapse and blockage. If not repaired in time, they will cause upstream underground drainage and sewage to overflow and affect use.

[0003] Existing trenchless repair technologies for drainage and sewage pipelines are widely used in pipeline repair. Currently, the most common trenchless repair processes include local resin curing, stainless steel foam cylinders, and double expansion rings. However, each of these processes has its limitations: double expansion ring repair is only suitable for large-diameter pipes; stainless steel foam cylinders rely mainly on foaming agents to create a seal, but the foaming effect cannot be effectively controlled, and some pipes may still leak after repair; local resin curing relies on a special repair resin adhered to the glass fiber to form a tight bond with the original pipe, and the cured resin forms a dense impermeable layer with the glass fiber to prevent leakage. However, because it mainly relies on the adhesive force of the resin to bond to the original pipe, water flow will dilute the resin applied to the glass fiber surface during leak repair, resulting in poor final repair results. Developing a completely new trenchless repair process for drainage and sewage pipelines is a topic that requires creative thinking from those skilled in the art.

[0004] Based on the above description of the existing technology and its defects, this application designs a novel plastic pipe structure and construction method for replacing the original pipe using a trenchless process to solve this defect. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a novel plastic pipe structure for replacing existing pipes using a trenchless process. It has advantages such as simple structure, convenient construction, low cost, and significant effect, and solves the technical problems existing in the three repair processes in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel plastic pipe structure for replacing existing pipes using a trenchless process, comprising a pipe body, characterized in that: an outer wall locking step is provided on one side of the outer wall of the pipe body, and an inner wall locking step is provided on the other side of the inner wall of the pipe body; the outer wall locking step and the inner wall locking step are connected by a socket and are tightly engaged with each other.

[0007] The outer wall locking step on one side of the pipe includes an inner hole of the pipe and a locking step one; the inner wall locking step on the other side of the pipe includes an inner hole of the pipe and a locking step two. A sealing ring groove is provided on the outer wall locking step. The main body of the pipe is generally 400-1000mm in length.

[0008] Furthermore, the outer wall locking step and the inner wall locking step on the other side of the pipe are interlocking locking step structures. The outer wall locking step and the inner wall locking step are respectively set as one or more sets, and the two are tightly interlocked with each other.

[0009] Furthermore, the first locking step of the outer wall locking step on one side of the pipe is a beveled trapezoidal or triangular structure, and the second locking step on the corresponding inner wall locking step is also a beveled trapezoidal or triangular structure.

[0010] Furthermore, a sealing ring is provided on the sealing ring groove, and the sealing ring is made of a rubber material with a certain degree of elasticity.

[0011] Furthermore, the main body of the pipe is integrally formed with the outer wall locking step on one side of the pipe and the inner wall locking step on the other side of the pipe, and the material can be polypropylene or polyethylene.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] First, the pipe structure of this application adopts an inner and outer wall interlocking stepped connection design, which allows for a tight connection between the pipe bodies, reducing leakage and greatly improving drainage efficiency. Installation is also simple and quick. Second, by pushing the pipe bodies section by section into place to replace the original drainage pipe, there is no need to excavate the entire drainage pipe, significantly reducing construction work and time, and lowering construction costs. Furthermore, the outer and inner wall interlocking steps of the pipe body are tightly interlocked, and a sealing ring groove is provided on the outer wall interlocking step, with an added sealing ring, further enhancing the connection stability between the pipe bodies, improving the sealing performance of the drainage pipe, and reducing leakage. The pipe structure and construction method of this application have advantages such as simple structure, convenient construction, low cost, and significant effects, possessing high practical value and application prospects. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the pipeline structure of this utility model;

[0015] Figure 2 This is a partial schematic diagram of the connection structure of the two-section pipe body of this utility model;

[0016] Figure 3 This is a schematic diagram of the construction structure of this utility model.

[0017] In the diagram: 1 Shaft inlet, 2 Shaft outlet, 3 Pipe body, 31 Outer wall locking step, 32 Inner wall locking step, 311 Pipe inner hole, 312 Locking step one, 313 Sealing ring groove, 314 Locking step two, 315 Sealing ring. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-3 This embodiment describes a novel plastic pipe structure for replacing existing pipes using a trenchless process. The structure includes a pipe body 3, characterized in that: an outer wall locking step 31 is provided on one outer wall of the pipe body 3, and an inner wall locking step 32 is provided on the other inner wall of the pipe body 3. The outer wall locking step 31 and the inner wall locking step 32 are connected by a socket and are tightly engaged with each other.

[0020] The outer wall locking step 31 on one side of the pipe includes an inner hole 311 and a locking step 312; the inner wall locking step 32 on the other side of the pipe includes an inner hole 311 and a locking step 314. The outer wall locking step 31 is provided with a sealing ring groove 313. The pipe body 3 is generally 400-1000mm long.

[0021] In this embodiment, the design of the locking step 312 not only increases the strength of the connector, but also plays a guiding role during connection, so that the outer wall locking step 31 can smoothly enter the inner wall locking step 32, achieving a fast and stable connection.

[0022] The outer wall locking step 31 and the inner wall locking step 32 on the other side of the pipe are locking step structures that can mesh with each other. The outer wall locking step 31 and the inner wall locking step 32 are respectively set as one or more sets, and the two are tightly meshed with each other.

[0023] In this embodiment, the main engaging components are locking step one 312 and locking step two 314. One set can be provided, and multiple sets can be provided when a certain connection strength and sealing effect are required.

[0024] The locking step 312 of the outer wall locking step 31 on one side of the pipe is a beveled trapezoidal or triangular structure. The corresponding locking step 314 on the inner wall locking step 32 is also a beveled trapezoidal or triangular structure. The pipe body 3, the outer wall locking step 31 on one side of the pipe and the inner wall locking step 32 on the other side of the pipe are integrally formed. The material can be polypropylene, polyethylene, etc.

[0025] In this embodiment, the locking step 1 312 and locking step 2 314 are specifically shaped as chamfered trapezoids or triangles with inclined surfaces. Since the pipe body 3 is made of materials such as polypropylene and polyethylene, which have a certain degree of elasticity, when the locking step 1 312 and locking step 2 314 are subjected to a certain pressure, they will return to their original shape, thus completing the connection and achieving a seal.

[0026] A sealing ring 315 is provided on the sealing ring groove 313, and the sealing ring 315 is made of rubber material with a certain degree of elasticity.

[0027] In addition, the sealing ring 315 further enhances the sealing between the two pipe bodies 3. Since the sealing ring 315 is made of rubber with a certain degree of elasticity, it can provide additional sealing pressure when the pipes are connected, effectively preventing water from leaking from the tiny gaps at the pipe connection. This design not only improves drainage efficiency but also greatly extends the service life of the pipes.

[0028] The 400-1000mm pipe length design primarily meets installation requirements, allowing for construction within a smaller space and reducing construction difficulty and cost. The 315 sealing ring, made of a relatively elastic rubber material, not only ensures excellent sealing performance but also maintains its sealing effect even when the pipe undergoes minor deformation due to temperature changes or external forces, further improving the pipe's reliability and durability.

[0029] Furthermore, the main body of the pipe 3 is integrally formed with the outer wall locking step 31 on one side of the pipe and the inner wall locking step 32 on the other side of the pipe, avoiding the loosening or leakage problems that may occur at the connection points in traditional connection methods, and improving the overall strength and sealing performance of the pipe. The choice of materials such as polypropylene and polyethylene gives the pipe good corrosion resistance and anti-aging properties, extending the service life of the pipe.

[0030] The working principle of the above embodiments is as follows:

[0031] (1) Determine the leakage point and damage of the drainage pipe. Based on the existing leakage detection instruments and the damage or collapse, dig two vertical shafts from the ground at a suitable construction location at a distance from the damaged drainage pipe. The vertical shaft on the left is the vertical shaft inlet 1, and the vertical shaft on the right is the vertical shaft outlet 2. Ensure that the drainage pipe can be seen in the vertical shaft inlet 1 and the vertical shaft outlet 2.

[0032] (2) After the existing construction equipment enters from the shaft inlet 1, the construction equipment is equipped with a crushing structure and a positioning rod that are larger than the original pipe diameter. The crushing structure rotates and crushes the original pipe structure. The positioning rod can be installed from the shaft inlet 1 to the shaft outlet 2 and is set inside the original drainage pipe from the shaft inlet 1 to the shaft outlet 2. The pipe body 3 with the same diameter as the original drainage pipe enters the original drainage pipe from the shaft inlet 1.

[0033] (3) Push the main body of the pipe 3 along the positioning rod from the shaft inlet 1 to the shaft outlet 2. The outer wall locking step 31 moves forward. After pushing in one section of the main body of the pipe 3, push the outer wall locking step 31 of the next section of the main body of the pipe 3 into the inner wall locking step 32 of the first section of the main body of the pipe 3. Continue to push in this way until the original drainage pipe is replaced.

[0034] During installation, the outer wall locking step 31 of the second pipe body 3 is first aligned with the inner wall locking step 32 of the first pipe body 3, and then gradually pushed in along the inclined surface of the locking step 312. The design of the locking step 312 makes this process as smooth as a sliding rail, greatly reducing frictional resistance during installation and thus improving installation efficiency. Once the outer wall locking step 31 of the second pipe body 3 is fully inserted into the inner wall locking step 32 of the first pipe body 3, the sealing ring 315 will be compressed and tightly adhered to the contact surface of the two, forming a tight seal. This design not only ensures the sealing performance of the pipe connection, but also effectively prevents various problems caused by loosening or leakage at the connection.

[0035] During operation, the fluid within the pipeline system is smoothly transported through the main pipe body 3. Because the main pipe body 3, the outer wall locking step 31, and the inner wall locking step 32 are integrally molded, the entire pipeline system possesses extremely high overall strength and sealing performance, capable of withstanding certain fluid pressure and external impact forces. Simultaneously, the selection of materials such as polypropylene and polyethylene gives the pipeline excellent corrosion resistance and anti-aging properties, maintaining stable performance even in harsh working environments, thereby extending the pipeline's service life.

[0036] As a preferred option, if the main body of the pipeline 3 needs to withstand a certain pressure, an electrofusion tape is used to seal the joint between the two main bodies of the pipeline 3.

[0037] The use of electrofusion tape further enhances the connection strength between the two main pipe bodies. The principle is to use electrofusion technology to fuse the electrofusion tape with the main pipe material to form an almost seamless connection. This treatment method not only improves the stability of the pipeline system under high pressure environment, but also effectively prevents the risk of leakage that may occur due to long-term pressure.

[0038] The construction equipment and positioning rods mentioned in the article are conventional and known equipment, and the technology is publicly available, so they will not be described in detail here.

[0039] It should be noted that, in this document, relational terms such as first and second, one side and the other side, are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new plastic pipe structure for replacing an existing pipe by a trenchless technology, comprising a pipe body (3), characterized in that: The outer wall locking step (31) on one side of the pipeline body (3) is provided with an inner hole (311) and a locking step one (312), and the inner wall locking step (32) on the other side of the pipeline body (3) is provided with an inner hole (311) and a locking step two (314). The outer wall locking step (31) on one side of the pipeline body (3) is provided with an inner hole (311) and a locking step one (312), and the inner wall locking step (32) on the other side of the pipeline body (3) is provided with an inner hole (311) and a locking step two (314).

2. A trenchless technology pipe-in-pipe replacement of existing pipe with new plastic pipe construction according to claim 1, characterized in that: The outer wall locking step (31) on one side of the pipeline body (3) is provided with an inner hole (311) and a locking step one (312), and the inner wall locking step (32) on the other side of the pipeline body (3) is provided with an inner hole (311) and a locking step two (314).

3. A new plastic pipe construction for trenchless pipe replacement according to any of claims 1 and 2, characterized in that: The outer wall locking step (31) on one side of the pipeline body (3) is provided with an inner hole (311) and a locking step one (312), and the inner wall locking step (32) on the other side of the pipeline body (3) is provided with an inner hole (311) and a locking step two (314).

4. A new plastic pipe construction for trenchless pipe replacement according to claim 3, characterized in that: The sealing ring groove (313) is provided with a sealing ring (315), and the sealing ring (315) is made of rubber material with certain elasticity.

5. A new plastic pipe construction for trenchless pipe replacement according to claim 1, characterized in that: The pipeline body (3), the outer wall locking step (31) on one side of the pipeline body (3) and the inner wall locking step (32) on the other side of the pipeline body (3) are integrally formed, and the material can be polypropylene or polyethylene.

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