Anti-corrosion steel pipe with communication line

Abstract

The utility model belongs to the technical field of anti-corrosion steel pipes, and particularly relates to an anti-corrosion steel pipe with a communication line, which comprises a steel pipe body, and an anti-corrosion layer is arranged on the outer wall of the steel pipe body. The anti-corrosion layer is sequentially provided with an epoxy powder layer, an adhesive layer and a polyethylene layer from inside to outside; the adhesive layer is provided with a communication line penetrating through the adhesive layer in the axial direction of the steel pipe. According to the scheme, the risk that the communication line is damaged is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of anticorrosive steel pipe, specifically relates to a anticorrosive steel pipe with communication line. BACKGROUND

[0002] For long distance water delivery engineering and gas delivery engineering delivery pipeline data delivery is basically blank state at home and abroad.The monitoring of long distance delivery pipeline is basically the installation detection system of far apart pump station (water delivery engineering) and gas station (gas delivery engineering) to carry out monitoring, and the pipeline is not monitored.Some pipelines as long as hundreds of kilometers cannot monitor the internal operation, and the long distance delivery pipeline basically relies on manual line inspection mode for monitoring, and this mode cannot monitor the internal operation of the pipeline.

[0003] When the prior art needs to monitor the 3PE anticorrosive steel pipe delivery pipeline of the steel pipe, a signal delivery line needs to be laid separately for data monitoring, and this process is to lay a communication line again after the completion of the entire pipeline construction.The existing communication line is high-temperature-resistant single-mode optical fiber, and the polyimide (PI) coated optical fiber is a common high-temperature-resistant optical fiber, and the outer diameter of the PI optical fiber is about 155 um.The polyimide coated optical fiber has excellent thermal stability under general high temperature, has the characteristics of high-temperature resistance, radiation resistance and good dielectric property, and can be used for a long time under the temperature of 300 DEG C or below.However, this communication line is laid separately from the pipeline during the construction process, and is easy to be scratched during the construction process, and the terrain changes (such as slight earthquake, and local subsidence after rain due to the need to dig deep trenches for burying the pipeline during the construction process, and the backfilling soil is loose) can also damage the communication line. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the utility model provides a anticorrosive steel pipe with communication line to solve the problem that the existing communication line is laid separately from the pipeline during the construction process, is easy to be scratched during the construction process, and the terrain changes can also damage the communication line during the use process.

[0005] The technical scheme adopted by the utility model is as follows: an anticorrosive steel pipe with communication line, comprising a steel pipe body, an anticorrosive layer is arranged on the outer wall of the steel pipe body;

[0006] The anticorrosive layer is sequentially provided with an epoxy powder layer, an adhesive layer and a polyethylene layer from inside to outside;

[0007] The adhesive layer is provided with a communication line penetrating the adhesive layer along the axial direction of the steel pipe body.

[0008] Further, the communication line comprises an optical fiber and a fiber protection layer, the fiber protection layer comprises a silica cladding and a polyimide coating arranged in sequence from inside to outside.

[0009] Further, the communication line extends outwardly from both ends of the adhesive layer, and the length of the extension of the communication line is greater than or equal to half of the circumference of the outer circumference of the cross section of the steel pipe body, and the extension of the communication line is used to connect the extension of the communication line of the adjacent steel pipe body.

[0010] Further, the connection of the two adjacent communication lines is sleeved with a heat shrink tube.

[0011] The beneficial effects of the utility model are as follows: the communication line is arranged in the adhesive layer, the communication line is wrapped by the anticorrosion layer composed of the epoxy powder layer, the adhesive layer and the polyethylene layer, a whole protection structure is formed, the communication line is not exposed alone in the construction process, but is protected by the multilayer protection material, the opportunity of direct contact between the communication line and the external construction equipment, tools and other objects is greatly reduced, the scratch caused by collision, scraping and the like in the construction process is effectively avoided, the laying of the communication line is not needed after the construction of the steel pipe body is completed, the construction steps and links are reduced, the possibility of scratch of the communication line in the construction process is reduced, the communication line is wrapped in the anticorrosion layer and is relatively isolated from the external terrain environment, the anticorrosion layer can play the role of buffering and dispersing stress, the external force caused by the change of terrain is avoided to act on the communication line, the flexibility and certain compression resistance of the polyethylene layer and the adhesive layer can absorb and disperse part of the pressure, the communication line is protected from excessive extrusion and pulling, and the risk of damage of the communication line is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a whole structure schematic view of the utility model;

[0013] Fig. 2 It is a partial sectional view of the steel pipe of the utility model;

[0014] Fig. 3 It is a partial sectional view of the communication line of the utility model;

[0015] Fig. 4 It is a mounting structure schematic view of the steel pipe of the utility model;

[0016] Fig. 5 It is Fig. 4 It is an enlarged structure schematic view of A in the middle;

[0017] The following are the attached drawings:

[0018] Steel pipe body 1, anticorrosive layer 2, epoxy powder layer 21, adhesive layer 22, polyethylene layer 23, communication line 3, optical fiber 31, silica cladding 32, polyimide coating 33, extension 34, heat shrink tube 4. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0020] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] Example one:

[0023] As shown in Figs. 1-5 A kind of anticorrosive steel pipe with communication line, including steel pipe body 1, the outer wall of the steel pipe body 1 is provided with anticorrosive layer 2;In the present embodiment, steel pipe body 1 is the 3PE anticorrosive steel pipe body 1 for long-distance water conservancy transport engineering and gas pipeline transport engineering.

[0024] The anticorrosive layer 2 is sequentially provided with an epoxy powder layer 21, an adhesive layer 22 and a polyethylene layer 23 from inside to outside; specifically, the epoxy powder layer 21 adopts epoxy powder paint, which is a kind of thermosetting, non-toxic paint, and the epoxy powder layer 21 has strong adhesion with the surface of the steel pipe body 1 after the steel pipe body 1 is heated at 200 degrees and then the epoxy powder is sprayed; the adhesive layer 22 is adhesive, which is used for bonding the epoxy powder of the inner epoxy powder layer 21 and the polyethylene coating of the outer polyethylene layer 23, and the adhesive is a copolymer adhesive, the main component of which is polyolefin, specifically, a vinyl copolymer adhesive; the polyethylene of the outer polyethylene layer 23 has excellent mechanical strength, chemical stability, insulation, resistance to plant root penetration and water immersion, etc. to improve the overall performance.

[0025] The adhesive layer 22 is provided with a communication line 3 penetrating the adhesive layer 22 along the axial direction of the steel pipe body 1. The communication line 3 is wrapped by the adhesive layer 22 and the polyethylene coating to form a protective layer, so that the communication line 3 forms an integral whole with the anticorrosive layer 2. By arranging the communication line 3 in the adhesive layer 22, the installation time of the communication line 3 is simplified during the early construction process.

[0026] As a preferred solution, the communication line 3 includes an optical fiber 31 and an optical fiber 31 protective layer, and the optical fiber 31 protective layer includes a silica cladding layer 32 and a polyimide coating layer 33 sequentially arranged from inside to outside. In this embodiment, the optical fiber 31 is a high-temperature-resistant single-mode optical fiber 31, the silica cladding layer 32 provides a low-refractive outer layer, which is in contrast with the high-refractive core of the optical fiber 31. The refractive index difference enables light to propagate in the core of the optical fiber 31 through total reflection mechanism, thereby realizing long-distance low-loss transmission. At the same time, the cladding also plays a physical protection role, which can protect the core of the optical fiber 31 from mechanical damage and chemical corrosion; by arranging the polyimide coating layer 33 outside the optical fiber 31, the polyimide coating layer 33 has excellent thermal stability at a general high temperature, and has the characteristics of high-temperature resistance, radiation resistance and good dielectric properties.

[0027] As a preferred solution, the communication line 3 extends outwardly from both ends of the adhesive layer 22, and the length of the extension 34 of the communication line 3 is greater than or equal to half the circumference of the outer circumference of the cross section of the steel pipe body 1, and the extension 34 of the communication line 3 is used to connect the extension 34 of the communication line 3 of the adjacent steel pipe body 1. Specifically, the ports of the adjacent two steel pipe bodies 1 are welded first. Since the steel pipe body 1 is a 3PE anti-corrosion steel pipe body 1 for long-distance water conveyance engineering and gas pipeline conveyance engineering, the length of the steel pipe body 1 is relatively long, and it is not easy to rotate the steel pipe body 1 to adjust the position of the communication line 3 on the steel pipe body 1. The extension 34 of the communication line 3 extending outwardly from each steel pipe body 1 facilitates the welding of the communication line 3 on each steel pipe body 1 with the communication line 3 on the adjacent steel pipe body 1. According to the actual position of the two adjacent communication lines 3, the excess length of the communication line 3 is cut off, and the appropriate length for welding is retained to ensure that the ends of the two adjacent communication lines 3 can be precisely docked, and then welded.

[0028] As a preferred solution, the connection between the two adjacent communication lines 3 is sleeved with a heat shrink tube 4. In this embodiment, the communication line 3 is an optical fiber 31, and the heat shrink tube 4 is an optical fiber 31 heat shrink tube 4. Before welding the two adjacent optical fibers 31, the optical fiber 31 heat shrink tube 4 is sleeved on one of the optical fibers 31. The end faces of the two optical fibers 31 are fused using an optical fiber 31 fusion machine to form a welding point. The optical fiber 31 heat shrink tube 4 sleeved on one of the optical fibers 31 is moved to the welding point so that its center is aligned with the welding point, ensuring that the heat shrink tube 4 can completely cover the welding point. The nozzle of a hot air gun is aligned with the heat shrink tube 4, and the hot air gun is slowly moved to uniformly heat the heat shrink tube 4. After the heat shrink tube 4 is completely shrunk, heating is stopped and it is allowed to cool and set in the natural environment. Thus, a protective sleeve is formed for the connection between the two adjacent communication lines 3.

[0029] The working mode of the utility model is as follows:

[0030] The pretreated steel pipe body 1 is heated to 200 degrees, and then sprayed with an epoxy powder coating. The epoxy powder melts at high temperature and tightly bonds with the surface of the steel pipe body 1 to form an epoxy powder layer 21; before the epoxy powder layer 21 has not completely cooled and solidified, the communication line 3 is placed in a predetermined position. The communication line 3 is composed of an optical fiber 31 and a protective layer including a silica cladding layer 32 and a polyimide coating layer 33, and an extension 34 is reserved at both ends of the communication line 3, which is greater than or equal to one half of the outer circumferential length of the cross section of the steel pipe body 1. The communication line 3 is placed along the axial direction of the steel pipe body 1 and is ready to be embedded in the adhesive layer 22; during the process of coating the adhesive layer 22, the adhesive wraps the communication line 3, tightly connects the communication line 3 with the epoxy powder layer 21, and also provides a bonding basis for the adhesion of the outer polyethylene layer 23, so that the communication line 3 and the corrosion-resistant layer 2 are preliminarily combined into a whole; the polyethylene material is wound or coated on the adhesive layer 22 to form the outer polyethylene layer 23, so that the communication line 3 is completely wrapped in the corrosion-resistant layer 2, the integration of the communication line 3 and the corrosion-resistant steel pipe body 1 is completed, and the corrosion-resistant steel pipe body 1 with the communication line 3 is formed; during use, the corrosion-resistant steel pipe body 1 with the communication line 3 is buried in the trench dug in advance, the ports of two adjacent steel pipe bodies 1 are welded first, the extension 34 at both ends of the communication line 3 is used for connection, the actual positions of the two adjacent communication lines 3 are determined, the excess length is cut off, the ends of the two communication lines 3 are accurately connected, and then a fiber 31 fusion splicer is used for welding; before welding, a heat shrink tube 4 is sleeved on one of the optical fibers 31, after welding, the heat shrink tube 4 is moved to the welded position and is uniformly heated by a hot air gun, so that the heat shrink tube 4 shrinks and tightly wraps the welded position, and protection is formed on the connection after cooling and setting.

[0031] The present scheme uses the 3PE corrosion-resistant steel pipe with the communication line to realize real-time data transmission without laying a separate communication cable. The 3PE corrosion-resistant steel pipe with the communication function can transmit branch data of the pipeline and can also transmit data of the pump station (water delivery project) and the gas station (gas delivery project). During the early construction process, the whole pipeline simplifies the time for separately installing the communication line.

[0032] The utility model is described in detail above. The description of the specific embodiment is only used to help understand the method and the core idea of the utility model. It should be pointed out that the ordinary skilled in the art can make some improvements and modifications to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A corrosion resistant steel pipe with a communication line, characterized by: Comprising A steel pipe body (1), an outer wall of the steel pipe body (1) is provided with a corrosion protection layer (2); The corrosion protection layer (2) is sequentially provided with an epoxy powder layer (21), an adhesive layer (22) and a polyethylene layer (23) from inside to outside; The adhesive layer (22) is provided with a communication line (3) penetrating through the adhesive layer (22) along the axial direction of the steel pipe body (1).

2. A corrosion resistant steel pipe with communication lines according to claim 1, characterized in that: The communication line (3) comprises an optical fiber (31) and an optical fiber (31) protective layer, the optical fiber (31) protective layer comprises a silica cladding layer (32) and a polyimide coating layer (33) sequentially arranged from inside to outside.

3. A corrosion resistant steel pipe with communication lines according to claim 1, characterized in that: The communication line (3) extends outwardly at both ends of the adhesive layer (22), the length of the extension part (34) of the communication line (3) extending outwardly is greater than or equal to half of the circumference of the outer circumference of the cross section of the steel pipe body (1), and the extension part (34) of the communication line (3) is used for connecting with the extension part (34) of the communication line (3) of the adjacent steel pipe body (1).

4. A corrosion resistant steel pipe with communication lines according to claim 3, characterized in that: The connection part of the two adjacent communication lines (3) is sleeved with a heat shrink tube (4).

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