CN210119617U - Pipe-in-pipe structure convenient for laying and replacing optical cables - Google Patents
Pipe-in-pipe structure convenient for laying and replacing optical cables Download PDFInfo
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- CN210119617U CN210119617U CN201921004358.6U CN201921004358U CN210119617U CN 210119617 U CN210119617 U CN 210119617U CN 201921004358 U CN201921004358 U CN 201921004358U CN 210119617 U CN210119617 U CN 210119617U
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Abstract
The utility model discloses a tubular construction in pipe convenient to optical cable lays change, including pipeline and optical cable passageway, the optical cable passageway divide into a plurality of sections, and every section includes the section of drawing forth at main part and both ends, and the main part is fixed at the pipeline inner wall, and the section of drawing forth at both ends passes the hole of drawing forth that corresponds on the pipeline respectively outside the pipeline is drawn forth, and the hole of drawing forth is sealed. When the micro-pipe is laid, the micro-pipe is fixed on the inner wall of the conveying pipeline to form an optical cable channel, and the space between the micro-pipe and the micro-pipe is sealed, so that the micro-pipe is prevented from leaking air and water; leading the micro-pipe out of the conveying pipeline from the leading-out hole to form a leading-out section every 1500-; laying an optical cable into the micro-tube of each section, wherein two ends of the optical cable are exposed out of the micro-tube; and welding the optical cables of the adjacent sections together, protecting the optical cables by using a joint box, and sealing the gap between the optical cables and the microtubes. After the micro-tube is laid, the optical cable with the fault in the micro-tube can be replaced at the leading-out section under the condition that the medium conveying of the conveying pipeline is not stopped.
Description
Technical Field
The utility model relates to a tubular construction in pipe convenient to optical cable lays change is applicable to the optical cable in storage and transportation devices such as pipeline, storage tank, boiler and the oil well and lays and incessantly defeated, incessantly produce and change trouble optical cable.
Background
The pipeline is a very important transportation device, and in order to realize digitization and intellectualization of the pipeline, a communication optical cable or a distributed optical fiber sensor is usually installed along storage and transportation facilities such as the pipeline. At present, when optical cables are laid along a pipeline in the industry, the optical cables are generally laid along the axial direction of the pipeline in a mode of laying the optical cables in the same ditch outside the pipeline, and the optical cables have a plurality of problems during installation, laying and failure.
In the actual construction process, the pipeline and the optical cable construction belong to different construction methods, so that the synchronous construction of a plurality of construction units of the pipeline is avoided, and each construction unit can carry out jumping construction. The pipeline is a main construction, and due to the restriction of various factors such as land acquisition, road traffic, weather, terrain and the like, the pipeline is usually not continuously laid, so that the optical cable cannot be synchronously laid in cooperation with the pipeline construction progress at all, the optical cable is forced to be cut into a plurality of sections, the optical transmission attenuation is increased, and the quality of optical fiber communication is seriously influenced; the optical cable externally applied to the pipeline is not only influenced by the environment and weather, but also needs to be coordinated with the pipeline construction, so that the construction period is delayed, and a large amount of labor cost is generated due to coordination, weather, environment and the like sometimes; when laying the optical cable outside the pipeline, if the pressure testing discovery leaks after the pipeline ditch backfills, need large-scale machinery excavation once more, will lead to the optical cable many places to be dug absolutely, increase the whole optical fiber loss that the optical cable joint will lead to and increase, seriously influence the quality of optical fiber communication, lead to the unable opening of optical fiber communication line even. Therefore, silicon core pipes are generally laid outside the pipeline in the same ditch, and after the pipeline is qualified in whole-line pressure test and backfilled, the optical cable is laid in an air blowing mode, but the problem of pipeline leakage cannot be monitored by the optical cable in the laying mode.
SUMMERY OF THE UTILITY MODEL
The utility model discloses lay the quality that optical cable exists fiber communication outside the pipeline among the prior art and easily receive external influence and reduce, the construction easily receives weather, pipeline progress influence and the construction cycle is long, produce a large amount of mistake labour cost scheduling problem, provide a be convenient for pipeline incessantly defeated change trouble optical cable's pipe-in-pipe structure and method.
The utility model adopts the following technical scheme:
a tube-in-tube structure convenient for laying and replacing optical cables comprises a transmission pipeline and an optical cable channel formed by microtubes,
the optical cable channel is divided into a plurality of sections, each section comprises a main body and leading-out sections at two ends of the main body, the main body is fixed on the inner wall of the conveying pipeline, the leading-out sections at the two ends respectively penetrate through corresponding leading-out holes in the conveying pipeline to be led out of the conveying pipeline, and the leading-out holes are sealed.
Between the ends of adjacent lead-out sections located outside the delivery conduit there is a closure for protecting the fused portion of the cables of adjacent sections.
Each section comprises a plurality of micro-tubes which are sequentially and hermetically connected, wherein the micro-tubes are metal tubes or non-metal tubes, the outer diameter of each micro-tube is 6.0-40.0 mm, and the wall thickness of each micro-tube is 1.0-2.5 mm.
And the connection part of the adjacent microtubes and the lead-out hole are sealed by mechanical seal or electric welding.
The length of each of the sections is 1500-.
The laying method of the pipe-in-pipe structure convenient for laying and replacing the optical cable comprises the following steps:
fixing a plurality of micro-tubes on the inner wall of the conveying pipeline to form an optical cable channel, and sealing the micro-tubes to prevent the micro-tubes from leaking air and water;
leading the micro-pipe out of the conveying pipeline from the corresponding leading-out hole on the conveying pipeline at intervals of 1500-;
laying an optical cable into the micro-tube of each section, wherein two ends of the optical cable are exposed out of the micro-tube of the leading-out section, and 8-15m is reserved;
and fusing the optical fibers in the two optical cables of the adjacent sections outside the conveying pipeline, protecting by using a joint box, and sealing the gap between the optical cable and the pipe orifice of the leading-out section micro-pipe.
If the valve is met, the micro-pipe is led out of the conveying pipeline at one side of the valve, and then is led into the conveying pipeline from the other side of the valve, and the micro-pipe is laid to the far end continuously.
The micro-tube is a metal or nonmetal coil pipe with continuous length, the outer diameter is 6.0-40.0 mm, the wall thickness is 1.0-2.5mm, and the optical cable is laid in the micro-tube in a mechanical and/or manual traction mode.
The micro-pipe is fixed on the inner wall of the conveying pipeline in a welding, sticking or supporting mode.
The micro-pipe is led out through the leading-out hole after the direction of the inner wall of the conveying pipeline is changed, and the maximum bending radius is kept.
The technical effects of the utility model:
the utility model discloses a pipe-in-pipe structure convenient to optical cable lays change will be connected the optical cable passageway that forms by many microtubules and lay the pipeline inner wall to form a gas tightness continuous line that is independent of pipeline, manage pipe-in-pipe promptly, thereby established one set of optical cable that is independent of pipeline and laid the passageway, the optical cable can be communication optical cable, also can be ordinary optical cable, perhaps sensing transmission composite optical cable together. The optical cable is laid in the pipeline, the conveying pipeline provides good protection for the micro-pipe, and the micro-pipe provides good protection for the optical cable, so that the conveying pipeline provides better protection for the optical cable, and the damage of large-scale mechanical excavation to the optical cable is avoided; meanwhile, the optical cable laid in the pipe-in-pipe structure can detect the pipeline leakage problem by detecting the vibration signal of the pipeline wall caused by the reaction force of water flow on the pipeline wall when leakage occurs, and the silicon core pipe laid outside the pipe cannot be monitored; and the pipe-in-pipe structure makes the optical cable lay also become more convenient, light simple more, only need accomplish the acceptance check at the pipeline is qualified after, lay the optical cable in the pipeline can, because construct in the pipeline, there is the protection of pipeline, can avoid receiving the influence of environmental weather factors such as wind and rain, low temperature, can also avoid laying the construction coordination difficulty that the optical cable faced outside the pipeline, trouble such as time limit for a project delay, and practice thrift because of coordinating, weather, a large amount of mistake labour cost that the environment etc. leads to.
The utility model discloses further improve, divide into a plurality of district with the optical cable passageway, outside pipeline was drawn forth at the both ends of every district section, one section distance was drawn forth the optical cable passageway promptly and is formed outside pipeline and draw forth a section microtubule, is convenient for relapse the optical cable of installing and removing fast. If the optical cable has a fault, the optical cable can be replaced only by operating the leading-out section of the section corresponding to the fault optical cable, namely after the micro-tube is laid, the optical cable with the fault in the micro-tube can be replaced quickly under the condition that the conveying pipeline does not stop conveying the medium, and the problem that the optical cable is replaced and maintained under the condition that the optical cable laid in the pipeline must stop conveying and stopping production is solved. The device is also suitable for communication and installation of various temperature, vibration and strain optical cables in pressure vessels such as storage tanks and boilers and oil wells, so that fault optical cables can be simply and conveniently replaced and maintained under the conditions of continuous transportation and continuous production, the time and the cost are greatly saved, and the security and the benefit of enterprises are ensured.
The pipe-in-pipe has enough safety, firstly, the material and the size of the micro-pipe are selected according to the working environment and the operating pressure of the pipeline, the diameter of the micro-pipe is very small and is millimeter-sized, the diameter of the leading-out hole on the conveying pipeline is also very small and limited, and when the pipe-in-pipe is laid, the leading-out hole and the connection part of the micro-pipe are sealed by mechanical sealing or electric welding, and the water and air leakage of the conveying pipeline and the micro-pipe are avoided; secondly, when laying, two ends of the optical cable are exposed out of the leading-out section, 8-15m is reserved, optical fibers in two adjacent optical cables are welded together, and a protection box is used for protecting; when the optical cable is laid, the micro-pipes are led out from the conveying pipeline every 1500-2500m, so that the micro-pipes in each section are ensured to be long enough, the optical cable is prevented from being cut into multiple sections, the length of the continuous optical cable is increased, and the attenuation of optical transmission signals is reduced.
The utility model discloses a pipe-in-pipe structure is applicable to various temperatures in pressure vessel such as storage tank, oil well, boiler and the oil well, vibration, the simple and convenient quick installation of strain monitoring optical cable equally, and the optical cable is installed in the pipeline, has pipeline's protection, and is safer than installing outside the pipeline to can improve pipeline transport efficiency, increase benefit at quick replacement trouble optical cable, the fast maintenance optical cable under the condition that the pipeline does not stop defeated, does not stop producing.
Preferably, the micro-tube is led out from the leading-out hole after the direction of the inner wall of the conveying pipeline is changed, the maximum bending radius is kept, and the phenomenon that the optical cable cannot penetrate through the micro-tube due to too small bending radius is avoided.
Drawings
Fig. 1 is a schematic diagram illustrating a preferred embodiment of a tube-in-tube structure for facilitating replacement of an optical cable without interruption.
Reference numerals: 1-conveying pipeline, 11-leading-out hole, 2-micro tube, 21-leading-out section, 3-optical cable and 4-joint box.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the tube-in-tube structure for replacing a faulty optical cable without stopping transportation of a pipeline in this embodiment includes a transportation pipeline 1 and an optical cable channel formed by micro-tubes 2, where the optical cable channel includes a plurality of sections, each section includes a main body and leading-out sections 21 at two ends, the main body is located on the inner wall of the transportation pipeline 1, the leading-out sections at two ends pass through leading-out holes 11 on the transportation pipeline 1 and are led out of the transportation pipeline 1, optical cables 3 are laid in the optical cable channel formed by the micro-tubes in each section, and two ends of each optical cable extend out of the leading-out sections 21 and are fused with optical fibers in the optical cables 3 extending out of the adjacent leading-out sections 21, a junction box 4 is used to protect the fused portion, and a gap between the micro-tubes 2 and the leading-out holes 11, and a.
The optical cable channel is one and can also form a plurality of parallel channels; each section of the optical cable channel is sequentially connected in a sealing way by a plurality of micro-tubes 2, and the joints of the adjacent micro-tubes are sealed by mechanical welding or electric welding; the micro-pipe 2 is a coiled pipe with continuous length, the material and the size of the micro-pipe 2 are selected according to the working environment and the operating pressure of the pipeline, in the embodiment, the micro-pipe 2 is a metal pipe, the outer diameter is 6.0mm, and the wall thickness is 2.0 mm.
The position of the leading-out hole 11 ensures that the maximum bending radius of the micro-tube is kept after the original laying direction of the micro-tube 2 is changed, and the optical cable 3 is prevented from not penetrating through the micro-tube 2 because the bending radius is too small.
The laying method of the pipe-in-pipe structure convenient for replacing the fault optical cable without stopping pipeline transportation comprises the following steps:
fixing a plurality of micro-tubes 2 on the inner wall of the conveying pipeline 1 to form an optical cable channel, and sealing the positions between the micro-tubes 2 and the micro-tubes 2 to avoid air leakage and water leakage of the micro-tubes 2;
leading the micro-pipe 2 out of the conveying pipeline 1 from the corresponding leading-out hole 11 on the conveying pipeline 1 every 2000m to form a leading-out section 21, sealing a gap between the micro-pipe 2 and the leading-out hole 11 and avoiding air leakage and water leakage;
if the valve is met, leading the micro-tube 2 out of the conveying pipeline 1 from one side of the valve, leading the micro-tube into the conveying pipeline 1 from the other side of the valve, and continuously laying the micro-tube to the far end;
the optical cable 3 is penetrated into the micro tube 2 of each section by adopting a mechanical and/or manual traction mode, two ends of the optical cable 3 are exposed out of the micro tube 2 of the leading-out section, and the optical cable with the length of about 10m is reserved, so that the optical fiber is convenient to weld;
and fusing the optical fibers in the two optical cables 3 of the adjacent sections outside the conveying pipeline 1, protecting the optical fibers by using a joint box 4, and sealing a gap between the optical cable 3 and the pipe orifice of the micro-pipe of the leading-out section 21 by using glue or a mechanical mode.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the present invention within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A tube-in-tube structure convenient for laying and replacing optical cables is characterized by comprising a transmission pipeline and an optical cable channel formed by microtubes,
the optical cable channel is divided into a plurality of sections, each section comprises a main body and leading-out sections at two ends of the main body, the main body is fixed on the inner wall of the conveying pipeline, the leading-out sections at the two ends respectively penetrate through corresponding leading-out holes in the conveying pipeline to be led out of the conveying pipeline, and the leading-out holes are sealed.
2. The tube-in-tube structure of claim 1, wherein a closure is provided between the ends of adjacent pigtails outside the delivery conduit for protecting the fused portion of the fiber optic cables of adjacent sections.
3. The tube-in-tube structure according to claim 1, wherein each segment comprises a plurality of micro tubes which are sequentially and hermetically connected, the micro tubes are metal tubes or non-metal tubes, the outer diameter of the micro tubes is 6.0-40.0 mm, and the wall thickness of the micro tubes is 1.0-2.5 mm.
4. The tube-in-tube structure of claim 3, wherein the joints between adjacent microtubes and the exit holes are mechanically or electrically welded.
5. The tube-in-tube structure of claim 1, wherein the length of each segment is 1500-2500 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004358.6U CN210119617U (en) | 2019-06-28 | 2019-06-28 | Pipe-in-pipe structure convenient for laying and replacing optical cables |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004358.6U CN210119617U (en) | 2019-06-28 | 2019-06-28 | Pipe-in-pipe structure convenient for laying and replacing optical cables |
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| CN210119617U true CN210119617U (en) | 2020-02-28 |
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| CN201921004358.6U Active CN210119617U (en) | 2019-06-28 | 2019-06-28 | Pipe-in-pipe structure convenient for laying and replacing optical cables |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174738A (en) * | 2019-06-28 | 2019-08-27 | 中国水利水电科学研究院 | A kind of tube-in-tube structure and laying method convenient for fiber cable laying replacement |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174738A (en) * | 2019-06-28 | 2019-08-27 | 中国水利水电科学研究院 | A kind of tube-in-tube structure and laying method convenient for fiber cable laying replacement |
| CN110174738B (en) * | 2019-06-28 | 2024-02-02 | 中国水利水电科学研究院 | Tube-in-tube structure convenient for optical cable laying replacement and laying method |
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