A fiber optic cable built-in non-excavation spiral wound pipe

Abstract

The utility model belongs to pipeline trenchless repair technical field relates to a kind of optical fiber built-in type trenchless spiral winding pipeline, it is characterized by: the pipeline is formed by composite profile spiral winding, the composite profile includes profile body and optical fiber, optical fiber is embedded in the profile body, and the optical fiber and profile body are integrally formed by extrusion. The utility model design is scientific and reasonable, with the advantages of being able to improve construction efficiency, save manpower and effort, reliable work, easy to implement, is a kind of optical fiber built-in type trenchless spiral winding pipeline with higher innovation.

Description

Technical Field

[0001] This utility model belongs to the field of trenchless pipeline repair technology, and relates to a trenchless pipeline, specifically a fiber optic embedded trenchless spiral winding pipeline. Background Technology

[0002] Trenchless pipeline repair technology has been widely adopted, and the use of distributed optical fibers for pipeline monitoring has also proven to be effective in practice.

[0003] For example, Chinese patent CN214789773U discloses a spiral wound pipe, which includes several spiral wound pipe profiles spliced ​​together. The spiral wound pipe profile includes a pipe wall, a first reinforcing rib, and a second reinforcing rib. The spiral wound pipe also includes a support strip that cooperates with the spiral wound pipe profile. A gap is formed between the support strip and the spiral wound pipe profile, and the spiral wound pipe also includes an optical fiber installed in the gap. Compared with the prior art, this utility model, by incorporating an optical fiber, can transmit leakage alarm signals and reflect the specific location of the leakage, facilitating rapid detection and emergency repair.

[0004] As stated in the aforementioned public documents, most optical fibers are currently laid on the outside of spirally wound pipes. That is, after the spirally wound pipes are formed, the optical fibers are laid manually, which is time-consuming, labor-intensive, and inconvenient.

[0005] Therefore, it is essential to provide a fiber-optic embedded trenchless spiral wound pipe. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a fiber-optic embedded trenchless spiral winding pipe that can improve construction efficiency, save manpower and effort, and is easy to implement.

[0007] The technical problem solved by this utility model is achieved through the following technical solution:

[0008] A non-excavation spiral wound pipe with embedded optical fiber is characterized in that: the pipe is spirally wound from a composite profile, the composite profile including a profile body and an optical fiber, the optical fiber being embedded in the profile body, and the optical fiber being extruded integrally with the profile body.

[0009] Furthermore, it also includes a distributed strain sensor, on which a metal connecting post perpendicular to it is provided. Connection holes are provided at intervals on the profile body opposite to the optical fiber. The distributed strain sensor is inserted into the connection hole through the metal connecting post, and the metal connecting post is in contact with the optical fiber.

[0010] Furthermore, the outer surface of the optical fiber is coated with a high-temperature resistant coating layer.

[0011] Furthermore, adhesive is provided on the inner surface of the distributed strain sensor, and the distributed strain sensor is attached to the profile body by the adhesive.

[0012] The advantages and positive effects of this utility model are:

[0013] 1. This fiber-optic embedded trenchless spiral wound pipe integrates the pipe profile with the fiber optic cable for monitoring the pipe, eliminating the cumbersome step of laying the fiber optic cable separately and greatly improving construction efficiency.

[0014] 2. This fiber-optic-embedded trenchless spiral-wound pipeline, through the installation of distributed strain sensors, can collect fiber optic signals and transmit them to a signal processing unit. The collected signals are then wirelessly transmitted to a remote operation and maintenance management platform, facilitating pipeline monitoring. This invention avoids the cumbersome process of pulling wires inside the pipeline by inserting the distributed strain sensors onto the optical fiber, thus improving construction efficiency and ensuring the stability of signal transmission and the reliability of remote monitoring.

[0015] 3. This utility model has a scientific and reasonable design, and has the advantages of improving construction efficiency, saving manpower and labor, reliable operation, and easy implementation. It is a highly innovative fiber-optic embedded trenchless spiral winding pipe. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of one embodiment of the composite profile of this utility model;

[0017] Figure 2 This is a schematic diagram of another embodiment of the composite profile of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure connecting the distributed strain sensor of this utility model to the metal connecting column;

[0019] Figure 4 This is a schematic diagram of the structure of this utility model.

[0020] Explanation of reference numerals in the attached figures

[0021] 1-Locking slot, 2-Profile substrate, 3-Reinforcing rib, 4-Fiber optic cable, 5-Distributed strain sensor, 6-Locking head, 7-Metal connecting column. Detailed Implementation

[0022] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0023] An innovative fiber-optic embedded trenchless spiral-wound pipe is characterized by the following: the pipe is spirally wound from a composite profile, which includes a profile body and an optical fiber. The profile body comprises a profile substrate 2, a locking groove 1, a locking head 6, and reinforcing ribs 3. A locking groove is formed at one end of the profile substrate in the width direction, and a locking head is formed at the other end. Reinforcing ribs are spaced apart in the middle of the profile substrate. An optical fiber 4 is embedded within the profile substrate, and the optical fiber is integrally extruded with the profile body.

[0024] This utility model provides two implementation methods. One method involves embedding optical fibers in the profile matrix at positions corresponding to the reinforcing ribs, such as... Figure 1 As shown; one method involves dispersing optical fibers at multiple locations within the profile matrix, such as... Figure 2 As shown.

[0025] The composite profile is manufactured using PVC extrusion. A high-temperature resistant coating is applied to the outside of the optical fiber, enabling it to withstand temperatures higher than the curing temperature required for the profile itself. This ensures smooth integral extrusion of both components while guaranteeing the normal operation of the optical fiber. The built-in optical fiber structure also avoids the problem of exposed optical fibers being easily damaged.

[0026] It also includes a distributed strain sensor 5, on which a metal connecting post 7 perpendicular to it is provided. Connection holes are provided at intervals on the profile body opposite to the optical fiber. The distributed strain sensor is inserted into the connection hole through the metal connecting post, and the metal connecting post is in contact with the optical fiber.

[0027] The distributed strain sensors can be installed on the surface of the profile body at different intervals as needed, and connected to optical fibers through metal connecting posts for collecting and transmitting signals.

[0028] To ensure the reliability of the connection between the distributed strain sensor and the profile body, in addition to the metal connecting post insertion connection, an adhesive connection method is also provided. That is, the inner surface of the distributed strain sensor is provided with adhesive, and the distributed strain sensor is attached to the profile body by the adhesive.

[0029] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A fiber-optic embedded trenchless spiral wound pipe, characterized in that: The pipe is made of a composite profile spirally wound together. The composite profile includes a profile body and an optical fiber. The optical fiber is embedded inside the profile body and is extruded integrally with the profile body.

2. The fiber-optic embedded trenchless spiral wound pipe according to claim 1, characterized in that: It also includes a distributed strain sensor, on which a metal connecting post perpendicular to it is provided. Connecting holes are provided at intervals on the profile body opposite to the optical fiber. The distributed strain sensor is inserted into the connecting hole through the metal connecting post, and the metal connecting post is in contact with the optical fiber.

3. The fiber-optic embedded trenchless spiral wound pipe according to claim 1, characterized in that: The optical fiber is coated with a high-temperature resistant coating layer.

4. The fiber-optic embedded trenchless spiral wound pipe according to claim 2, characterized in that: A connecting adhesive is provided on the inner surface of the distributed strain sensor, and the distributed strain sensor is attached to the profile body by the connecting adhesive.

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