CN206054981U - Ultra-deep-water Multi-purpose flexible pipe - Google Patents
Ultra-deep-water Multi-purpose flexible pipe Download PDFInfo
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- CN206054981U CN206054981U CN201621104639.5U CN201621104639U CN206054981U CN 206054981 U CN206054981 U CN 206054981U CN 201621104639 U CN201621104639 U CN 201621104639U CN 206054981 U CN206054981 U CN 206054981U
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Abstract
This utility model provides a kind of ultra-deep-water Multi-purpose flexible pipe; which solve existing submarine pipeline and there is the technical problem that perishable, easy to wear, crushing resistance is poor, resistance to gas permeability is poor and pliability is poor; which is provided with inner liner; the outside welding of inner liner has enhancement layer; functional layer is wound with outside enhancement layer; the outside cladding matcoveredn of functional layer, this utility model can be widely used for the fields such as oil gas, chemical industry, municipal works.
Description
Technical field
This utility model is related to a kind of tubing, more particularly, to a kind of ultra-deep-water Multi-purpose flexible pipe.
Background technology
The research and development of offshore engineering structure and equipment directly influence the exploration of marine resources, develop and use, tool
There is great meaning.Submarine pipeline is the standby vitals of extra large frock, be between subsea production system and surface unit between
Key is linked, and its design and the selection of product are significant to oil and gas development.Submarine pipeline is usually used in Jie such as oil, gas and water
The blending transportation of matter, it is therefore necessary to possess high pressure resistant, anticorrosive, air-tightness it is good the features such as.Existing submarine pipeline is broadly divided into
Metallic conduit (based on steel pipe) and flexible duct two types.
Traditional oil, natural gas transportation rely primarily on steel pipe, and steel pipe has higher intensity and modulus, energy
It is enough to resist inside and outside pressure well, thus be still used in sea-bottom oil-gas exploitation so far.As time goes on, steel
The defect of tubing giving sufficient strength is gradually revealed.Due to the environment corrosivity residing for submarine pipeline it is very strong, along with oil gas
In medium, water content is very high, and the etching problem of steel pipe becomes increasingly conspicuous, Frequent Accidents, causes huge property loss, sternly
The personal safety of maintainer is threatened again, and the laying and maintenance of steel pipe are all more difficult, waste huge manpower and materials.
Although layer flexible pipeline light weight, can coiling, construct and easy to maintenance, but easily produce Jing after long-time use
Interlayer weares and teares, and causes interlayer to depart from, causes functional structure layer to fail, greatly reduces the property such as resistance to compression, resisting fatigue of flexible duct
Can, and be susceptible to leakage in tubing junction and cause damage；And the flexible duct that monolayer extrusion is obtained, then exist corrosion-resistant
The problems such as poor, poor resistance to gas permeability of property and poor pliability.
The content of the invention
This utility model is aiming at existing submarine pipeline and has that perishable, easy to wear, crushing resistance is poor, the infiltration of resistance to gas
Property the poor and poor technical problem of pliability, there is provided a kind of corrosion-resistant, wear-resistant, crushing resistance is preferable, resistance to gas permeability compared with
The good and preferable ultra-deep-water Multi-purpose flexible pipe of pliability.
For this purpose, this utility model provides a kind of ultra-deep-water Multi-purpose flexible pipe, which is provided with inner liner, and the outside of inner liner is melted
Enhancement layer is connected to, functional layer, the outside cladding matcoveredn of functional layer outside enhancement layer, is wound with.
Preferably, inner liner is single layer structure, and its material is high molecular polymer, and high molecular polymer is super high molecular weight
Polyethylene or polyethylene or polypropylene or polyphenylene sulfide or polyether-ether-ketone or ethenol copolymer.
Preferably, inner liner is successively coated or is co-extruded by internal layer from inside to outside, middle level and outer layer, and internal layer is polyphenyl
Thioether or polyether-ether-ketone or Kynoar or ethenol copolymer or polyamide, middle level are cementability glue-line, and outer layer is poly- third
Alkene or polyethylene or polyamide.
Preferably, enhancement layer strengthens band and is made up of thermoplastic macromolecule material and fiber, wherein hot to strengthen band winding layer
Plastic macromolecule material is polyphenylene sulfide or polyether-ether-ketone or Kynoar or polypropylene or polyethylene or polyamide, and fiber is
Glass fibre or aramid fiber or carbon fiber.
Preferably, optical fiber, cable, pressure/temperature sensor are provided with functional layer；Protective layer material is polypropylene or poly- second
Alkene or polyamide.
Preferably, internal layer thickness is 0.5-5mm, and intima-media thickness is 0.5-3mm, and outer layer thickness is 5-30mm.
Preferably, it is 30-160mm to strengthen bandwidth, and thickness is 0.15-0.35mm, and the winding number of plies is 20-160 layers, is wound
Angle is ± (30-85) °, and the winding direction of adjacent two layers is contrary.
Preferably, strengthen bandwidth be 50-70mm, thickness is 0.2-0.25mm, the winding number of plies be 50-70 layers, winding angle
Spend for ± 55 °, the winding direction of adjacent two layers is contrary.
The unique structure of this utility model cementability, adopts fiber and macromolecular thermoplastic polymer for material, by which
Unique production technology forms bonded composite pipe structure, forms inside and outside three layers of inner liner using unique material, proposes
The inner liner production technology of " three-layer co-extruded ", improves the softness of the corrosion resistance, resistance to gas permeability and pipeline of inner liner
Property, can preferably meet requirement of the production of hydrocarbons process to flexible pipe.The unique production technology of this utility model and design of material
Make it have higher use temperature and pressure, can be applicable to ultra-deep-water field, and with conventional steel pipeline and common soft pipe phase
Than with higher corrosion resistance, higher anti-fatigue performance, less flow resistance, higher specific strength, lower peace
The performance of this and high temperature high voltage resistant is dressed up, the Technology that the molding in inner liner, layers of material are combined is solved the problems, such as, therefore
Offshore oil and gas conveying can be safely and efficiently used for, it is significant for marine mining engineering.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Schematic cross-sections of the Fig. 2 for this utility model inner liner.
Symbol description in figure：
1. inner liner；2. enhancement layer；3. protective layer；4. internal layer；5. middle level；6. outer layer；7. functional layer.
Specific embodiment
Describe specific embodiment of the present utility model with reference to the accompanying drawings in detail.
As shown in figure 1, this utility model is provided with inner liner 1, the outside welding of inner liner 1 has enhancement layer 2, outside enhancement layer 2
Portion is wound with functional layer 7, the outside cladding matcoveredn 3 of functional layer 7.
Inner liner 1 can be single layer structure, its material be high molecular polymer, high molecular polymer be super high molecular weight gather
Ethylene (UHMWPE) or polyethylene (PE) or polypropylene (PP) or polyphenylene sulfide (PPS) or polyether-ether-ketone (PEEK) or vinyl alcohol are altogether
Polymers (EVCOH), the inner liner 1 of this kind of material are moderate, and preferably, intensity is high for wear-resisting and decay resistance, shock resistance and weight
Amount is light；Inner liner 1 can also be three-decker, as shown in Fig. 2 which is successively wrapped by internal layer 4 from inside to outside, middle level 5 and outer layer 6
Cover or be co-extruded, internal layer 4 is that polyphenylene sulfide (PPS) or polyether-ether-ketone (PEEK) or Kynoar (PVDF) or vinyl alcohol are common
Polymers (EVCOH) or polyamide (PA) layer, middle level 5 are the cementability glue-lines such as hot melt adhesive layer, and outer layer 6 is polypropylene (PP) or poly- second
The thermoplastic macromolecule material layer such as alkene (PE) or polyamide (PA).Inner lining structure that is this three-layer co-extruded or successively coating makes liner
Layer 1 has higher anti-internal pressure capability, and due to polyphenylene sulfide (PPS) or polyether-ether-ketone (PEEK) or Kynoar
(PVDF) use of thermoplastic macromolecule material such as, makes this utility model can be used at higher temperature pumped (conveying) medium and have
Preferable osmotic-pressure-tolerant.
Enhancement layer 2 to strengthen band winding layer, strengthen band be by made by pre-preg, its by thermoplastic macromolecule material and
Fiber constitute, wherein thermoplastic macromolecule material be polyphenylene sulfide (PPS), polyether-ether-ketone (PEEK), Kynoar (PVDF),
Polypropylene (PP), polyethylene (PE), polyamide (PA) etc., fibrous material are glass fibre, aramid fiber and carbon fiber etc..
Optical fiber, cable, pressure/temperature sensor are provided with functional layer 7, data transfer and monitoring management is realized.
The material of protective layer 4 can select the thermal plastic high polymer materials such as polypropylene (PP), polyethylene (PE), polyamide (PA)
Material.
The Multi-purpose flexible pipe of this full adhesion property of this utility model can be according to the demand of different clients, by difference
The combination of material is targetedly manufactured and designed.
The manufacturing step of above-mentioned ultra-deep-water Multi-purpose flexible pipe is as follows：
(1) manufacture of inner liner：
Single layer structure：By extruder by ultra-high molecular weight polyethylene (UHMWPE) or polyethylene (PE) or polypropylene (PP)
Or polyphenylene sulfide (PPS) or the high molecular polymer such as polyether-ether-ketone (PEEK) or ethenol copolymer (EVCOH) extrusion obtain interior
Lining 1；
Three-decker：The material of internal layer 4, middle level 5 and outer layer 6 is complex as by successively cladding or three-layer co-extruded mode
Integrally, obtain inner liner.Three layers of extrusion include distinguishing extruded material by inner layer extruder, middle level extruder and outer layer extruder
Successively cladding is formed one or co-extrudate material and is complex as a whole by same extruder head, forms adhered real wall knot
Structure.
Internal layer 4 is polyphenylene sulfide (PPS) or polyether-ether-ketone (PEEK) or Kynoar (PVDF) or ethenol copolymer
Or the high polymer layer such as polyamide (PA) (EVCOH).Inner layer extruder can select corresponding according to the characteristic of extruded material
Screw rod and barrel with meet extrusion require, extrude need inner layer material.
Middle level 5 is the cementability glue-lines such as PUR, can select corresponding middle level extruder according to the requirement of PUR.
Outer layer 6 is thermoplastic macromolecule material layer, thermoplastic macromolecule material be polypropylene (PP) or polyethylene (PE) or
Polyamide (PA) etc..Equally, outer layer extruder can select corresponding extrusion screw rod and barrel according to different extruded materials,
To meet the requirement of different extruded materials.
Certainly, a plurality of co-extrusion production line can also be designed to realize according to the difference of 6 extruded material characteristic of internal layer 4 and outer layer
Three layers of different material combination are successively coated or co-extrusion technology.
(2) manufacture of enhancement layer：
The complete welding by way of heating of band edge winding side will be strengthened, on the inner liner 1 that step (1) is obtained, then to be made
Which forms enhancement layer 2 by the cooler bin cooling and shaping containing cooling water or cold wind.Heating can be added using LASER HEATING, hot blast
The modes such as heat, Infrared Heating or other radiant heatings.
It is that, by, made by pre-preg, which is made up of thermoplastic macromolecule material and fiber, wherein thermoplasticity is high to strengthen band
Molecular material is polyphenylene sulfide (PPS), polyether-ether-ketone (PEEK), Kynoar (PVDF), polypropylene (PP), polyethylene
(PE), polyamide (PA) etc., fibrous material are glass fibre, aramid fiber and carbon fiber etc..
To preheat to strengthening the mode such as band logical overfire air or laser or heater box before winding, then again will
Which is involved in wrapping machine winding cylinder, and carrying out LASER HEATING in winding makes its welding on inner liner, can so eliminate fiber and twine
Around when internal stress, and beneficial to the seriality of pipeline production process.When ground floor enhancing band has been wound, successively with same side
Formula winds the enhancing band of other layers, ultimately forms increasing by the cooler bin cooling and shaping containing cooling water or cold wind after the completion of winding
Strong layer 2.
(3) manufacture of functional layer：
Optical fiber, cable, pressure/temperature sensor are wrapped in into formation functional layer 7 on enhancement layer 2.
(4) manufacture of protective layer：
Protective layer 4 is coated in functional layer 7 by coating machine, is then shaped by cooling and shaping case, then passed through
Hair dryer is dried, and finally opens pipe collecting machine closed tube and obtains finished product.The material of protective layer 4 can select polypropylene (PP), polyethylene
(PE), the thermoplastic macromolecule material such as polyamide (PA).
The manufacturing step of above-mentioned ultra-deep-water Multi-purpose flexible pipe is described further with reference to embodiment.
Embodiment 1
(1) ultra-high molecular weight polyethylene (UHMWPE) extrusion is obtained by inner liner 1 by extruder, expressing technique condition is such as
Under：Extrusion thickness 30mm, 150～180 DEG C of extrusion temperature, vacuum 0.03MPa, hauling speed 3m/min.
(2) preheated to strengthening band by hot-air, be then involved in wrapping machine winding cylinder again, entered in winding
Row LASER HEATING makes its welding on inner liner 1.When ground floor enhancing band has been wound, other are wound successively in the same way
The enhancing band of layer, by the cooler bin cooling and shaping containing cooling water forming enhancement layer 2 after the completion of winding.
Enhancing bandwidth is 30mm, and thickness is 0.2mm, and the winding number of plies is 160 layers, and winding angle is ± 30 ° and alternately winds,
I.e. ground floor is 30 ° or ﹣ 30 ° of ﹢, the second layer and ground floor winding direction conversely, being 30 ° or ﹢ 30 ° of ﹣, by that analogy.Fiber is
Carbon fiber, thermoplastic macromolecule material are Kynoar (PVDF) or polyamide (PA).
(3) optical fiber, cable, pressure/temperature sensor are wrapped in into formation functional layer 7 on enhancement layer 2.
(4) protective layer 4 is coated in functional layer 7 by coating machine, is then shaped by cooling and shaping case, then led to
Hair dryer drying is crossed, pipe collecting machine closed tube is finally opened and is obtained finished product.Protective layer 4 is polyphenylene sulfide (PPS) or polyamide (PA) layer.
The flexible pipe of the present embodiment manufacture can be coiled, and highest operating pressure is up to 15MPa, using temperature up to 80 DEG C, interior
Wall is smooth, non-scaling, not grafting wax, and flow resistance is little, wear-resistant, and conveying capacity is lasting, it is adaptable to oil-gas gathering and transportation, anti-wear performance
It is good.
Embodiment 2
(1) material of internal layer 4, middle level 5 and outer layer 6 is complex as a whole by three-layer co-extruded mode, obtains inner liner
1.Internal layer 4 is polyphenylene sulfide (PPS) or ethenol copolymer (EVCOH) layer, and middle level 5 is the cementability glue-lines such as PUR, outer layer 6
For polyethylene (PE) layer.
(2) preheated to strengthening band by heater box, be then involved in wrapping machine winding cylinder again, entered in winding
Row LASER HEATING makes its welding on inner liner 1.When ground floor enhancing band has been wound, other are wound successively in the same way
The enhancing band of layer, by the cooler bin cooling and shaping containing cold wind forming enhancement layer 2 after the completion of winding.
Enhancing bandwidth is 50mm, and thickness is 0.35mm, and the winding number of plies is 50 layers, and winding angle is ± 55 ° and alternately winds,
I.e. ground floor is 55 ° or ﹣ 55 ° of ﹢, the second layer and ground floor winding direction conversely, being 55 ° or ﹢ 55 ° of ﹣, by that analogy.Fiber is
Glass fibre, thermoplastic macromolecule material are polyphenylene sulfide (PPS) or polypropylene (PP).
(3) optical fiber, cable, pressure/temperature sensor are wrapped in into formation functional layer 7 on enhancement layer 2.
(4) protective layer 4 is coated in functional layer 7 by coating machine, is then shaped by cooling and shaping case, done
It is dry, finally open pipe collecting machine closed tube and obtain finished product.Protective layer 4 is polyethylene (PE).
In the present embodiment step (1), the respective thickness of internal layer, middle level and outer layer and expressing technique are as follows：
Internal layer：Thickness 0.5mm, 380 DEG C of extrusion temperature, vacuum 0.026MPa, hauling speed 0.7m/min；Middle level：It is thick
Degree 1mm, 190 DEG C of extrusion temperature, vacuum 0.031MPa, hauling speed 0.7m/min；Outer layer：Thickness 30mm, extrusion temperature 180
DEG C, vacuum 0.03MPa, hauling speed 0.7m/min.
The flexible pipe of the present embodiment reaches as high as 150 DEG C using temperature, and up to 4000m, (diameter is less, can disk for greatest length
Volume length is longer), anti-pressure ability is up to 30MPa, it is adaptable to heavy oil block oil-gas mining and the conveying of higher temperature fluid and oil gas
Water mixed delivery pipeline.
Embodiment 3
(1) material of internal layer 4, middle level 5 and outer layer 6 is complex as a whole by three-layer co-extruded mode, obtains inner liner
1.Internal layer 4 is polyether-ether-ketone (PEEK) layer, and middle level 5 is hot melt adhesive layer, and outer layer 6 is polyamide (PA) layer.
(2) preheated to strengthening band by laser, be then involved in wrapping machine winding cylinder again, carried out in winding
LASER HEATING makes its welding on inner liner 1.When ground floor enhancing band has been wound, other layers are wound successively in the same way
Enhancing band, by the cooler bin cooling and shaping containing cooling water forming enhancement layer 2 after the completion of winding.
Enhancing bandwidth is 70mm, and thickness is 0.25mm, and the winding number of plies is 70 layers, and winding angle is ± 70 ° and alternately winds,
I.e. ground floor is 70 ° or ﹣ 70 ° of ﹢, the second layer and ground floor winding direction conversely, being 70 ° or ﹢ 70 ° of ﹣, by that analogy.Fiber is
Aramid fiber, thermoplastic macromolecule material are polyether-ether-ketone (PEEK) or polyethylene (PE).
(3) optical fiber, cable, pressure/temperature sensor are wrapped in into formation functional layer 7 on enhancement layer 2.
(4) protective layer 4 is coated in functional layer 7 by coating machine, is then shaped by cooling and shaping case, done
It is dry, finally open pipe collecting machine closed tube and obtain finished product.Protective layer 4 is polypropylene (PP).
In the present embodiment step (1), the respective thickness of internal layer, middle level and outer layer and expressing technique are as follows：
Internal layer：Thickness 3mm；220 DEG C of extrusion temperature, vacuum 0.025MPa, hauling speed 1.5m/min；Middle level：Thickness
3mm, 180 DEG C of extrusion temperature, vacuum 0.031MPa, hauling speed 1.5m/min；Outer layer：Thickness 15mm, extrusion temperature 160
DEG C, vacuum 0.028MPa, hauling speed 1.5m/min.
The flexible pipe of the present embodiment has high osmotic-pressure-tolerant, and pressure rating can reach 15000psi；Running temperature is higher,
Suitable for gas transmission pipeline, can effectively prevent gas from permeating.
Embodiment 4
(1) material of internal layer 4, middle level 5 and outer layer 6 is complex as a whole by three-layer co-extruded mode, obtains inner liner
1.Internal layer 4 is Kynoar (PVDF) layer, and middle level 5 is hot melt adhesive layer, and outer layer 6 is polypropylene (PP) layer.
(2) preheated to strengthening band by heater box, be then involved in wrapping machine winding cylinder again, entered in winding
Row LASER HEATING makes its welding on inner liner 1.When ground floor enhancing band has been wound, other are wound successively in the same way
The enhancing band of layer, by the cooler bin cooling and shaping containing cold wind forming enhancement layer 2 after the completion of winding.
Enhancing bandwidth is 160mm, and thickness is 0.15mm, and the winding number of plies is 20 layers, and winding angle is twined for ± 85 ° of alternatings
Around that is, ground floor is 85 ° or ﹣ 85 ° of ﹢, the second layer and ground floor winding direction conversely, being 85 ° or ﹢ 85 ° of ﹣, by that analogy.Fiber
For carbon fiber, thermoplastic macromolecule material is Kynoar (PVDF) or polypropylene (PP).
(3) optical fiber, cable and pressure/temperature sensor are wrapped in into formation functional layer 7 on enhancement layer 2.
(4) protective layer 4 is coated in functional layer 7 by coating machine, is then shaped by cooling and shaping case, done
It is dry, finally open pipe collecting machine closed tube and obtain finished product.Protective layer 4 is polyamide (PA).
In the present embodiment step (1), the respective thickness of internal layer, middle level and outer layer and expressing technique are as follows：
Internal layer：Thickness 5mm, 280 DEG C of extrusion temperature, vacuum 0.027MPa, hauling speed 3m/min；Middle level：Thickness
0.5mm, 160 DEG C of extrusion temperature, vacuum 0.031MPa, hauling speed 3m/min；Outer layer：Thickness 5mm, 150 DEG C of extrusion temperature,
Vacuum 0.027MPa, hauling speed 3m/min.
Up to 4000m (diameter is less, can coil length longer), anti-pressure ability can for the flexible pipe greatest length of the present embodiment
Up to 30MPa, mechanical performance and decay resistance are preferable, it is adaptable to the conveying of oil gas and chemical mediator, corrosion-resistant resistance to infiltration, mechanics
Performance is good.
Only as described above, only specific embodiment of the utility model, when this utility model can not be limited with this
The scope of enforcement, therefore the displacement of its equivalent assemblies, or the equivalent variations made according to this utility model scope of patent protection and modification,
All should still belong to the category that this utility model claims are covered.
Claims (8)
1. a kind of ultra-deep-water Multi-purpose flexible pipe, which is provided with inner liner, it is characterized in that the outside welding of the inner liner has enhancing
Layer, is wound with functional layer, the outside cladding matcoveredn of the functional layer outside the enhancement layer.
2. ultra-deep-water Multi-purpose flexible pipe according to claim 1, it is characterised in that the inner liner is single layer structure, its
Material is high molecular polymer, high molecular polymer be ultra-high molecular weight polyethylene or polyethylene or polypropylene or polyphenylene sulfide or
Polyether-ether-ketone or ethenol copolymer.
3. ultra-deep-water Multi-purpose flexible pipe according to claim 1, it is characterised in that the inner liner is by from inside to outside
Internal layer, middle level and outer layer are successively coated or are co-extruded, the internal layer be polyphenylene sulfide or polyether-ether-ketone or Kynoar or
Ethenol copolymer or polyamide, the middle level are cementability glue-line, and the outer layer is polypropylene or polyethylene or polyamide.
4. the ultra-deep-water Multi-purpose flexible pipe according to Claims 2 or 3, it is characterised in that the enhancement layer is twined to strengthen band
Winding layer, strengthens band and is made up of thermoplastic macromolecule material and fiber, and wherein thermoplastic macromolecule material is polyphenylene sulfide or polyethers
Ether ketone or Kynoar or polypropylene or polyethylene or polyamide, fiber are glass fibre or aramid fiber or carbon fiber.
5. ultra-deep-water Multi-purpose flexible pipe according to claim 4, it is characterised in that optical fiber, electricity are provided with the functional layer
Cable, pressure/temperature sensor；The protective layer material is polypropylene or polyethylene or polyamide.
6. ultra-deep-water Multi-purpose flexible pipe according to claim 5, it is characterised in that the internal layer thickness is 0.5-5mm,
Intima-media thickness is 0.5-3mm, and outer layer thickness is 5-30mm.
7. ultra-deep-water Multi-purpose flexible pipe according to claim 6, it is characterised in that the enhancing bandwidth is 30-
160mm, thickness are 0.15-0.35mm, and the winding number of plies is 20-160 layers, and winding angle is ± (30-85) °, and adjacent two layers are twined
Around in opposite direction.
8. ultra-deep-water Multi-purpose flexible pipe according to claim 7, it is characterised in that the enhancing bandwidth is 50-
70mm, thickness are 0.2-0.25mm, and the winding number of plies is 50-70 layers, and winding angle is ± 55 °, the winding direction phase of adjacent two layers
Instead.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621104639.5U CN206054981U (en) | 2016-10-08 | 2016-10-08 | Ultra-deep-water Multi-purpose flexible pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621104639.5U CN206054981U (en) | 2016-10-08 | 2016-10-08 | Ultra-deep-water Multi-purpose flexible pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119706A (en) * | 2017-12-21 | 2018-06-05 | 武汉理工大学 | A kind of fiber winding intelligent pipeline and its manufacture craft |
| CN111919054A (en) * | 2018-03-29 | 2020-11-10 | 通用电气石油和天然气英国有限公司 | Flexible pipe body and method |
-
2016
- 2016-10-08 CN CN201621104639.5U patent/CN206054981U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119706A (en) * | 2017-12-21 | 2018-06-05 | 武汉理工大学 | A kind of fiber winding intelligent pipeline and its manufacture craft |
| CN111919054A (en) * | 2018-03-29 | 2020-11-10 | 通用电气石油和天然气英国有限公司 | Flexible pipe body and method |
| US11746935B2 (en) | 2018-03-29 | 2023-09-05 | Baker Hughes Energy Technology UK Limited | Flexible pipe body and method |
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