CN204611109U - A kind of reinforced thermoplastics composite pipe of pre-buried fiber optic cable - Google Patents
A kind of reinforced thermoplastics composite pipe of pre-buried fiber optic cable Download PDFInfo
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- CN204611109U CN204611109U CN201520096014.8U CN201520096014U CN204611109U CN 204611109 U CN204611109 U CN 204611109U CN 201520096014 U CN201520096014 U CN 201520096014U CN 204611109 U CN204611109 U CN 204611109U
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Abstract
The utility model relates to a kind of reinforced thermoplastics composite pipe of pre-buried fiber optic cable, comprises interior pipe, enhancement layer and outer tube successively from inside to outside, also comprises optical cable, and described optical cable is embedded in the tube wall of interior pipe and/or outer tube, and combines together with tube wall adhesion; Because the utility model is arranged in tube wall by ingenious for optical cable, therefore not only simple and reasonable, easy for installation, and reliably safe, be difficult to be attacked and destroy.And it is more accurate to make to detect data.
Description
Technical field
The utility model relates to a kind of reinforced thermoplastics compound (RTP) pipe of optical cable, and especially a kind of intelligent RTP penetrating optical cable Sensor monitoring function, belongs to nonmetal flexible pipeline intelligent monitoring technical field.
Background technique
In today that the energy lacks day by day, petroleum gas is as important energy reserves, and its exploitation is self-evident to the significance of country, utilizes Cemented filling oil, rock gas i.e. economy but also efficient, at home and abroad gets a lot of applications.The oil and gas exploitation industry in the past overwhelming majority adopts various steel pipe transmission, and to transport the most distinct issues of steel pipe are corrosion.In order to actualizing technology innovation and Economy optimization, oil and gas industry adopts nonmetal pipeline (NMP) more and more in recent years.Abundant oil-gas resource is had in ocean, exploit these resources, need a kind of tubing of corrosion-resistant, pliable and tough flexible, easy laying, advantages such as strengthening thermoplastic composite tube (RTP) and have designability, corrosion-resistant, flexible pliable, easily lay, be recyclable, compares metallic conduit and has unique advantage.
RTP is the desirable tubing being applicable to oil and gas transmission, and its bearing capacity is high, corrosion-resistant, and has good flexibility, can grow distance non-joint and lay fast.
As a kind of high pressure resistant, anticorrosive and flexible novel plastic composite pipe, RTP material achieves baling transport and the construction of Large diameter high pressure pipe material.Thus substantially reduce the link between tube and tube, speed of application improves decades of times, and transport and operating expenses reduce about 70%.Therefore in oil transportation and natural gas transport field, a large amount of successful uses is obtained.In view of China greatly develops industrial gas oil, RTP material is very wide in the market prospects of China, not only be suitable for offshore oilfield, be not suitable for for a varied topography the onshore oil field adopting rigidity short straight tube (as Glass Steel Tube), RTP material is also desirable selection.The RTP adding thermal insulation layer is also using in hot water, steam Transportation field.
RTP material is generally 3-tier architecture: internal layer is thermoplastic, as
pE80/PE100 or other heat-resistant materials; Mesosphere is enhancement layer, and reinforcing material can be wire rope, glass, aramid fiber and polyester etc.; Outer covering layer is optional white (earth's surface laying antiultraviolet) or black (buried laying) as required.Reinforcing band adopts the modified plastics of reinforcing material and more than PE80 to be composited, and the gap uniformity of each reinforcing material, uniform tension in order, has the unrivaled advantage of other non-reinforcing band forms.Special mode of heating make reinforcing band and outer wall of inner tube bonding with outer tube wall become as a whole, this pipe structure substantially solve produce stress concentrate the problem with internal stress.
At present, the development of long distance optical cable detection technique is very fast, is especially applicable to pipeline-like long distance on-line checkingi because of its detecting distance length and without the need to the advantage of sensor installation.But optical cable needs to lay along with pipeline rout, and construction requirement is higher.And be difficult to ensure for well fitting between the optical cable that detects and pipeline, because both are disconnected from each other, construction is difficult to coordinate, and plate also exists forecast not in time, the shortcomings such as the poor and rate of false alarm of positioning precision is high.
Model utility content
Technical problem to be solved in the utility model is, overcomes the shortcoming of prior art, provides a kind of intelligent RTP embedding optical cable, both reduces difficulty of construction, make again detection data accurate.This pipeline collector conveying, Signal transmissions, vibration monitoring and pipe leakage/strain monitoring, in one, can realize the on-line monitoring machine Real-Time Monitoring of long distance RTP effectively.
In order to solve above technical problem, the utility model provides a kind of reinforced thermoplastics composite pipe of pre-buried fiber optic cable, comprise interior pipe, enhancement layer and outer tube successively from inside to outside, it is characterized in that: also comprise optical cable, described optical cable is wrapped in the tube wall of interior pipe and/or outer tube, and combines together with tube wall adhesion.
The technological scheme that the utility model limits further is:
Further; described optical cable is straining sensing optical cable; described straining sensing optical cable comprises two strain optical cables and two temperature optical cables; arrange adjacent with temperature optical cable of described strain optical cable forms plum-shaped structure; reinforcer is set at the middle part of described plum-shaped structure, the outer wrap protective layer of described plum-shaped structure.
Further, described protective layer adopts polytetrafluoroethylmaterial material to make.
Further, the outside of the protective layer of described optical cable appearance also comprises high molecular polymer protective layer.Such optical cable both can be bonding with body after implanting RTP, can ensure that again optical cable is indeformable.
Further, described optical cable in the tube wall of interior pipe and/or outer tube in parallel, spiral or cross arrangement distribution.
Further, described enhancement layer is wrapped on described outer wall of inner tube, and winding angle is 50 ~ 60 °.
Further, described enhancement layer adopts the reinforcing fiber band being enclosed with polyolefine material.
The utility model is composited by three-decker, and wherein, pipe plays the effect of sealing and conveying fluid, and interior pipe adopts high density polyethylene (HDPE), can not only ensure the compactness that fluid is carried, also have corrosion-resistant, low wearing and tearing, the advantages such as good sealing effect; Enhancement layer plays the effect of bearing interior pressure, and ensure that RTP does not deform by during interior pressure, reinforcing fiber carries out pre-tensioner process, and to ensure the maximization of tension force in using process, pre-tensioner stress is the tightening force guaranteeing reinforcing fiber in band process processed; Outer tube can each load-carrying construction of protective conduit installation and using process in injury-free.Like this, optical cable is wrapped in RTP wall by the utility model in RTP manufacture process, and optical cable and RTP are melted as being integrated.Can realize the monitoring function such as Leak testtion and stolen, the environmetal impact that pipeline itself is subject to can be detected very accurately, and structure is simple, safe and reliable.Save as pipeline lays the expense of sense channel specially simultaneously; avoid pipeline and optical cable to construct respectively the trouble that the progress that exists is difficult to coordinate; protection can be formed again to himself; avoid the performance of sensing optic cable can be destroyed because of the production technology of RTP and pipeline construction, improve its environmental suitability.
The beneficial effects of the utility model are: because the utility model is arranged in tube wall by ingenious for optical cable, therefore not only simple and reasonable, easy for installation, and reliably safe, are difficult to be attacked and destroy.And it is more accurate to make to detect data.Optical cable is laid form by outside traditional pipeline; change into and enter pipe interior; optical cable laying not only can be made extremely simple; pipeline itself can be protected optical cable; it is made to be applicable to comparatively harsh work condition environment; also can carry out security monitoring and data transmission to RTP, achieve pipeline in the fluid transport of operation stage, Signal transmissions, vibration monitoring, leakage monitoring and strain monitoring function, and then ensure conduit running safety.
Accompanying drawing explanation
Below in conjunction with embodiment, the utility model is described in further detail:
Fig. 1 is the cross sectional representation of the utility model embodiment;
Fig. 2 is the Longitudinal cross section schematic of the utility model embodiment;
Fig. 3 is interior control pipe flow chart in the utility model embodiment;
Fig. 4 is the utility model embodiment middle external tube tubulation flow chart;
Wherein: 1. pipe in, 2. enhancement layer, 3. outer tube, 4. optical cable, 5. wire feeder, 6. upper saw pulley, 7. dryer, 8.PE raw material, 9. extruder, 10. Coolers.
Embodiment
embodiment 1
The reinforced thermoplastics composite pipe of a kind of pre-buried fiber optic cable that the present embodiment provides, its structure as shown in Figure 1, 2, comprises interior pipe 1, enhancement layer 2, outer tube 3, optical cable 4.Strengthen sensing layer to be made up of the reinforcing band that is wrapped on interior pipe 1 outer wall with predetermined winding angle, winding angle is 50 ~ 60 °.Optical cable 4 is embedded in interior pipe 1 wall and in outer tube 3 wall.Optical cable 4 can be parallel longitudinal arrangement, also can be spiral or X-shape arrangement.
The optical cable 4 of the present embodiment is straining sensing optical cable; primarily of two strain optical cables and two temperature optical cable compositions; arrange adjacent with temperature optical cable of strain optical cable forms plum-shaped structure, arranges reinforcer, the outer wrap protective layer of plum-shaped structure at the middle part of plum-shaped structure.The fibre core of optical cable adopts glass fibre to make usually; and have metal or plastic bushing at temperature optical cable overcoat; outside sleeve pipe, reinforcer is set; the material of reinforcer is generally glass, nylon or metal establishment net etc.; the pull resistance of itself and crush resistance poor, also need to add high molecular polymer protective layer, after RTP implanted by such optical cable, its protective layer is bonding with body; and made up by the protection of compound strip and the pre-tensioner of reinforcing fiber, reduce optical cable destructiveness.Optical cable with what shape, where be embedded in, Duo Shaogen, then the physical quantity detected as required and determining.Prerequisite is the intensity that can not affect RTP.Optical cable adopts special material to make, and have to pass through dry process before imbedding, pre-tensioner stress is 100 ± 20 newton.Must cool immediately after shaping.
Optical cable is attached in the wall of pipeline by the present embodiment, does not affect original function and the intensity of pipeline.After adopting the present embodiment, can air blow off be adopted easily optical cable to be penetrated optical cable while pipe laying construction.To carry out fiber optic cable communications application, to adopt optical cable detection technique to measure temperature, pressure, the mobility status of the material of conveying in RTP; The operating conditions measuring RTP itself, the damage avoiding fatigue, distortion, defect to cause; Measure the delta data of RTP surrounding environment, and whether there is construction around, whether whether sea has anchorage regardless, have animal to harass, avoid RTP to be destroyed.
In a word, because imbedding of optical cable makes monitoring system become as a whole with nonmetal flexible RTP, achieve the intelligent monitoring in RTP road, reduce RTP risk in use, make RTP controlled in any environment.
The manufacture method of the reinforced thermoplastics composite pipe of the pre-buried fiber optic cable of the utility model, comprises the following steps:
One, interior pipe is shaping, sees Fig. 3.PE raw material is put in interior pipe extruder 9, after (heating-up temperature is 180 ~ 230 DEG C) being heated to it and shearing compression process, obtain viscous state material, extruding and moulding cooling and shaping forms interior pipe 1.In process, uniform arrangement adds optical cable 4, pre-tensioner to its pretension tensile stress be 100 ± 20 newton.
Two, reinforcing band is shaping.One group of reinforcing fiber is intersected uniform arrangement, again polyolefinic raw materials is put into extruder 9, heat it and shear after compression processes and obtain viscous state material, viscous state material is extruded and is coated on reinforcing fiber by the extrusion die of extruder 9, and be enhanced band.
Three, enhancement layer is shaping.The outer wall of interior pipe 1 is wound around reinforcing band according to the winding angle of 55 °, forms enhancement layer 2.
Four, outer tube is shaping, sees Fig. 4.PE raw material is put into outer tube extruder 9, and obtain viscous state material after heating (heating-up temperature is 180 ~ 230 DEG C) to it and shearing compression process, viscous state material is extruded and is coated on outside enhancement layer by outer tube extruder 9, forms outer tube 3.In process, uniform arrangement adds optical cable 4, pre-tensioner to its pretension tensile stress be 100 ± 20 newton.Obtain the RTP that outer tube 3 also embeds optical cable.
In step one, pulled out by optical cable 4 from the coil holder of the adjustable resistance of wire feeder 5, one end of optical cable, through extruder 99, controls tension force by the double Idle wheel 6 of guiding.Realize arrangement pre-tensioner after carry out drying process by dryer 77 again, PE raw material 8, through extruder 99 extruding and moulding, obtains the interior pipe 1 of embedding optical cable, and idiographic flow comprises to be put pipe, drying, extrude and cool, and refers to accompanying drawing 3.
In step 4, pulled out by optical cable 4 from the coil holder of the adjustable resistance of wire feeder 5, one end of optical cable, through extruder 99, controls tension force by the double Idle wheel 6 of guiding.Realize arrangement pre-tensioner after carry out drying by dryer 77 again and process, PE raw material 8, through extruder 99 extruding and moulding, obtains the RTP finished product that outer tube also embeds optical cable, and idiographic flow comprises to be put pipe, drying, extrude and cool, and refers to accompanying drawing 4.
The manufacture method of above-mentioned RTP adopts system band and the Uncrossed manufacture production technology of tubulation, and flow process is reliable, convenient and efficient.Its equipment used comprises carrying device processed, interior pipe extruder 9, compound strip Stetch Wrapping Machine and outer tube extruder 9 successively according to processing sequence.
The manufacture method of aforesaid RTP, in wherein said step 2, is distributed on the Idle wheel of tubulation line by optical cable, one end of described optical cable is fixed on coil holder, after realization arrangement is pre-tensioner, adds in extruding and moulding manage through extruder 9, and cool in time, obtain the interior pipe embedding optical cable.
The manufacture method of aforesaid RTP, in wherein said step 4, optical cable is distributed in the winding displacement hole of tubulation line, one end of described optical cable is fixed on coil holder, after realization arrangement is pre-tensioner, add the outer tube of extruding and moulding through extruder 9, and cool in time, obtain the RTP that outer tube also embeds optical cable.
The difference of described step 4 and described step 2 is in step 4, there is interior pipe and enhancement layer before.Optical cable, PE raw material, interior pipe are by extruder 9 together with enhancement layer, and wherein optical cable, interior pipe pass through dryer 7 together with enhancement layer.
The manufacture method of aforesaid intelligent RTP, wherein said reinforcing band winding angle is 55 °; The heating-up temperature of described inner and outer pipe PE raw material is 180 ~ 230 DEG C.
Aforesaid intelligent RTP, when engineering is laid, general about 500 meters one section, each section of joint uses special joint to connect.
In addition, before preparing intelligent RTP, static experiment need be done to the temperature sensing optic cable selected and straining sensing optical cable, judge whether it can meet RTP manufacturing technique requirent, if can not meet, need to improve the structure and material of optical cable, to meet the demands, guarantee its optical property.
During actual use, after configuring distributed optical cable monitoring system, do integrity test.During test, one end of optical cable is connected upper its length of OTDR testing of equipment and attenuation degree.The length of display should equal the length of RTP.Measuring mechanical property is carried out to intelligent RTP in the successful basis of integrity test, and whether checking optical cable destroys in the process.Finally temperature and ess-strain experiment are carried out to intelligent RTP, verify its temperature variation that whether can detect that in experimentation, RTP self occurs and ess-strain change, and determine its sensitivity and validity.
In addition to the implementation, optical cable can also be embedded in any position of any flexible pipe by the utility model, only otherwise affect intensity and the function of pipeline.All employings are equal to technological scheme and the product of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (7)
1. a reinforced thermoplastics composite pipe for pre-buried fiber optic cable, comprises interior pipe, enhancement layer and outer tube successively from inside to outside, it is characterized in that: also comprise optical cable, and described optical cable is wrapped in the tube wall of interior pipe and/or outer tube, and combines together with tube wall adhesion.
2. the reinforced thermoplastics composite pipe of pre-buried fiber optic cable according to claim 1; it is characterized in that: described optical cable is straining sensing optical cable; described straining sensing optical cable comprises two strain optical cables and two temperature optical cables; arrange adjacent with temperature optical cable of described strain optical cable forms plum-shaped structure; reinforcer is set at the middle part of described plum-shaped structure, the outer wrap protective layer of described plum-shaped structure.
3. the reinforced thermoplastics composite pipe of pre-buried fiber optic cable according to claim 2, is characterized in that: described protective layer adopts polytetrafluoroethylmaterial material to make.
4. the reinforced thermoplastics composite pipe of pre-buried fiber optic cable according to claim 3, is characterized in that: also comprise high molecular polymer protective layer outside the protective layer of described optical cable appearance.
5. the reinforced thermoplastics composite pipe of pre-buried fiber optic cable according to claim 1, is characterized in that: described optical cable in the tube wall of interior pipe and/or outer tube in parallel, spiral or cross arrangement distribution.
6. the reinforced thermoplastics composite pipe of pre-buried fiber optic cable according to claim 1, is characterized in that: described enhancement layer is wrapped on described outer wall of inner tube, and winding angle is 50 ~ 60 °.
7. the reinforced thermoplastics composite pipe of pre-buried fiber optic cable according to claim 6, is characterized in that: described enhancement layer adopts the reinforcing fiber band being enclosed with polyolefine material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520096014.8U CN204611109U (en) | 2015-02-10 | 2015-02-10 | A kind of reinforced thermoplastics composite pipe of pre-buried fiber optic cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520096014.8U CN204611109U (en) | 2015-02-10 | 2015-02-10 | A kind of reinforced thermoplastics composite pipe of pre-buried fiber optic cable |
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| CN204611109U true CN204611109U (en) | 2015-09-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006075A (en) * | 2019-12-09 | 2020-04-14 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Fluid transmission pipeline, preparation method thereof and leakage detection system |
| CN111350885A (en) * | 2020-05-23 | 2020-06-30 | 胜利油田新大管业科技发展有限责任公司 | Cable laying pipe |
-
2015
- 2015-02-10 CN CN201520096014.8U patent/CN204611109U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006075A (en) * | 2019-12-09 | 2020-04-14 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Fluid transmission pipeline, preparation method thereof and leakage detection system |
| CN111350885A (en) * | 2020-05-23 | 2020-06-30 | 胜利油田新大管业科技发展有限责任公司 | Cable laying pipe |
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