CN111207249A - A new type of low temperature flexible pipeline - Google Patents
A new type of low temperature flexible pipeline Download PDFInfo
- Publication number
- CN111207249A CN111207249A CN202010139455.7A CN202010139455A CN111207249A CN 111207249 A CN111207249 A CN 111207249A CN 202010139455 A CN202010139455 A CN 202010139455A CN 111207249 A CN111207249 A CN 111207249A
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- temperature flexible
- temperature
- flexible pipeline
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- 239000010410 layer Substances 0.000 claims abstract description 149
- 239000013307 optical fiber Substances 0.000 claims abstract description 16
- 239000002861 polymer material Substances 0.000 claims abstract description 10
- 239000011241 protective layer Substances 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 229920006231 aramid fiber Polymers 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 239000004964 aerogel Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 8
- 239000002346 layers by function Substances 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 3
- -1 polychlorotrifluoroethylene Polymers 0.000 description 3
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 3
- 239000004760 aramid Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/02—Hoses, i.e. flexible pipes made of fibres or threads, e.g. of textile
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Textile Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to a novel low-temperature flexible pipeline which comprises a flexible joint layer, a wear-resistant layer, an anti-seepage layer, a circumferential layer, a longitudinal layer, a heat-insulating layer, an optical fiber layer and an outer protective layer which are coaxially arranged from inside to outside, wherein the flexible joint layer, the wear-resistant layer, the longitudinal layer, the circumferential layer, the heat-insulating layer and the optical fiber layer are sequentially wound layer by layer, the outer protective layer is formed by pultrusion of high polymer material PE, non-bonding structures are formed among the layers, and each functional layer respectively bears tasks such as axial force, circumferential force, sealing and the like. The invention solves the technical problems of poor flexibility, poor sealing property and the like of the existing low-temperature pipeline, and can be widely applied to the technical field of low-temperature pipelines.
Description
Technical Field
The invention relates to the technical field of low-temperature pipelines, in particular to a novel low-temperature flexible pipeline.
Background
FLNG (floating liquefied natural gas production plant) is a high technology vessel for marine natural gas development. The low-temperature flexible pipeline is core matched equipment of the FLNG and is used for outputting the low-temperature liquefied natural gas. The market potential of the low-temperature flexible pipeline is huge, and the low-temperature flexible pipeline can be applied to expansion including land use, water use LNG transportation, refuting and filling, and can potentially reach the billion level in the market.
The existing low-temperature pipe is a metal corrugated pipe or an inner and outer bimetallic spring and nonmetal polymer composite structure, and when the low-temperature pipe runs at low temperature, the difference between the thermal expansion coefficients of metal and nonmetal is large, so that sealing failure is easily caused; and the metal corrugated pipe has poor bending flexibility and is easy to generate transverse buckling under severe sea conditions.
Disclosure of Invention
The invention aims to overcome the defects of the technology and provide a novel low-temperature flexible pipeline which has a good sealing effect and good flexibility.
Therefore, the invention provides a novel low-temperature flexible pipeline which comprises a flexible joint layer, a wear-resistant layer, an impermeable layer, a circumferential layer, a longitudinal layer, a heat-insulating layer, an optical fiber layer and an outer protective layer which are coaxially arranged from inside to outside.
Preferably, the flexible joint layer, the wear-resistant layer, the impermeable layer, the annular layer, the longitudinal layer, the heat-insulating layer and the optical fiber layer are sequentially wound layer by layer.
Preferably, the compliant joint layer is in a Z-shaped, C-shaped or T-shaped interlocking structure form made of stainless steel materials.
Preferably, the wear-resistant layer is formed by winding aramid fibers.
Preferably, the barrier layer is a thin film tape made of a low temperature resistant polymer material.
Preferably, the low temperature resistant polymer is polychlorotrifluoroethylene.
Preferably, the annular layer is formed by winding 80-85 degrees of dry yarns made of carbon fiber materials.
Preferably, the longitudinal layer is formed by winding 40-55 degrees of dry yarns of carbon fiber materials.
Preferably, the heat-insulating layer is made by winding aerogel materials.
Preferably, a signal cable is arranged in the optical fiber layer and used for transmitting various signals.
Preferably, the outer protective layer is formed by pultrusion of a high polymer material PE.
The invention provides a novel low-temperature flexible pipeline, which has the following beneficial effects:
the novel low-temperature flexible pipeline comprises a flexible joint layer, a wear-resistant layer, an impermeable layer, an annular layer, a longitudinal layer, a heat-insulating layer, an optical fiber layer and an outer protective layer which are coaxially arranged from inside to outside; the flexible joint layer, the wear-resistant layer, the impermeable layer, the annular layer, the longitudinal layer, the heat-insulating layer and the optical fiber layer are sequentially wound layer by layer, the outer protective layer is formed by pultrusion of high polymer material PE, and all the layers are in a non-bonding state.
The compliant joint layer is made of stainless steel materials into Z-shaped, C-shaped, T-shaped and other interlocking structural forms; the interlocking structure reduces the bending rigidity of the pipeline, enhances the rigidity of the whole pipeline and increases the flexibility of the whole pipeline. In addition, although the thermal expansion coefficients of the compliant joint layer and each external functional layer are different, gaps exist between the compliant joints, and the change of the axial length caused by the difference of the thermal expansion coefficients can be ignored.
The anti-seepage layer is made of low-temperature-resistant polymer materials into a film belt, and the film belt is wound by multiple layers and additionally bundled into a tubular shape by fiber yarns to replace the original pultrusion forming pipe, so that the sealing effect is better. The wear-resistant layer is arranged between the flexible joint layer and the impermeable layer, so that the impermeable layer abrasion caused by bending and sliding of the flexible joint layer is avoided, and the sealing effect is improved.
The annular layer and the longitudinal layer are arranged, so that the pipeline bears annular force and axial force, the tensile strength of the whole pipeline is improved, and torsional deformation is better resisted; the optical fiber layer meets the requirements of transmission of various signals and measurement of changes of strain, temperature and the like, has a wide application range and has a wide application prospect.
Drawings
FIG. 1 is an expanded partial structure schematic of the cross-section of the present invention;
FIG. 2 is a schematic structural view of a compliant node layer of the present invention.
The labels in the figure are: 1. the composite material comprises a compliant joint layer, 2 a wear-resistant layer, 3 an impermeable layer, 4 a circumferential layer, 5 a longitudinal layer, 6 an insulating layer, 7 an optical fiber layer and 8 an outer protective layer.
Detailed Description
The present invention will be further described with reference to specific examples to assist understanding of the invention. The method used in the invention is a conventional method if no special provisions are made; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.
As shown in fig. 1: a novel low-temperature flexible pipeline comprises a flexible joint layer, a wear-resistant layer, an impermeable layer, a circumferential layer, a longitudinal layer, a heat-insulating layer, an optical fiber layer and an outer protective layer which are coaxially arranged from inside to outside.
The flexible joint layer, the wear-resistant layer, the impermeable layer, the annular layer, the longitudinal layer, the heat-insulating layer and the optical fiber layer are sequentially wound into a cylindrical shape layer by layer, and one layer is wound and then the next layer is wound. The non-adhesive structure is arranged between each layer, relative sliding can be achieved, and the winding thickness of each layer of structure is different according to actual use or different pressure, temperature and the like.
As shown in fig. 2: the compliant joint layer is in a Z-shaped, C-shaped or T-shaped interlocking structure form formed by winding stainless steel materials. Stainless steel material twines into this novel gentle and agreeable festival layer of low temperature flexible pipeline through the gyration coiler, and interlocking structural style makes has the space between the stainless steel material, has increased flexible elasticity, has reduced the bending stiffness of pipeline, makes the compliance of whole pipeline increase to need not realize the pipe bending through the elastic deformation of material, strengthened the intensity of whole pipeline, reduced tensile elongation. In the process of actual use, the structure is more resistant to wave beating and not easy to damage.
The wear-resistant layer is formed by winding aramid fibers. And winding the aramid fiber on the outer layer of the compliant joint layer to form a layer structure in the form of aramid fiber composite cloth. Aramid fiber is wear-resistant, corrosion-resistant and anti-aging, a wear-resistant layer is arranged between the flexible joint layer and the impermeable layer, the phenomenon that the impermeable layer is damaged due to slippage caused by bending deformation of the flexible joint layer is avoided, and the sealing effect of the whole pipeline is enhanced.
The impermeable layer is a thin film belt made of low-temperature resistant polymer material. The low-temperature resistant polymer material can adopt polychlorotrifluoroethylene, the polychlorotrifluoroethylene is wound on the outer layer of the wear-resistant layer in multiple layers, and the fibers are bundled into a tube shape to replace the original pultrusion tube, so that the sealing of the liquid in the pipeline under the low-temperature condition is ensured.
The annular layer is formed by winding carbon fiber materials by dry yarns at 80-85 degrees. The annular layer is two layers and is simultaneously wound by two rotary winding machines at a reverse angle of 80-85 degrees. The two layers of the pipes are wound at the same angle, but the spiral directions are opposite, so that the effect of balancing internal and external torques can be achieved, the torsional deformation is resisted, the tensile strength of the whole pipeline is improved, the hoop force is borne, partial internal pressure is resisted, and the internal flexible joint layer, the wear-resistant layer and the impermeable layer are protected. The two layers with opposite spiral directions use the same carbon fiber material to better resist torsional deformation.
The longitudinal layer is formed by winding carbon fiber materials by dry yarns at 40-55 degrees. The longitudinal layers are also two layers and are simultaneously wound by two rotary winding machines at a reverse angle of 40-55 degrees. The winding angle enables the longitudinal layer to bear axial force and resist stretching.
The heat preservation is made for the aerogel material, and the thermal insulation performance is good, guarantees that the interior liquid low temperature condition of pipeline moves.
The optical fiber layer is made by winding glass fiber, the signal cable is wound together with the glass fiber, and the signal cable is arranged between the two glass fibers to play a role in protecting the signal cable. The signal cable is various, can carry various signals, satisfies different requirements, measures changes such as strain and temperature.
The outer protective layer is formed by pultrusion one-step molding of high polymer material PE. The outer jacket is arranged on the outer layer of the optical fiber layer, and plays a role in protecting the inner layer from damage.
The winding method of each layer is described in the patent of the company (a method and a device for continuously winding a forming tube by a multi-head wet method).
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139455.7A CN111207249A (en) | 2020-03-03 | 2020-03-03 | A new type of low temperature flexible pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139455.7A CN111207249A (en) | 2020-03-03 | 2020-03-03 | A new type of low temperature flexible pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111207249A true CN111207249A (en) | 2020-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010139455.7A Pending CN111207249A (en) | 2020-03-03 | 2020-03-03 | A new type of low temperature flexible pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN111207249A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112372999A (en) * | 2020-12-01 | 2021-02-19 | 威海鸿通管材股份有限公司 | Low-temperature pipe spiral winding equipment and forming process |
| WO2023185011A1 (en) * | 2022-03-31 | 2023-10-05 | 江苏正道海洋科技有限公司 | High-temperature-resistant heat-insulating flexible composite pipe |
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| CN102213349A (en) * | 2011-05-23 | 2011-10-12 | 文登鸿通管材有限公司 | Adhesion-type pull and extrusion composite pipe |
| CN103481522A (en) * | 2013-08-27 | 2014-01-01 | 文登鸿通管材有限公司 | Method and device for continuously winding molded tube in multi-head wet process |
| US20150276118A1 (en) * | 2012-11-08 | 2015-10-01 | Technip France | Flexible pipe for transporting a cryogenic fluid, and associated equipment and method |
| CN108825893A (en) * | 2018-09-07 | 2018-11-16 | 广州远和船海研究院有限公司 | Composite flexible pipe |
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2020
- 2020-03-03 CN CN202010139455.7A patent/CN111207249A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112372999A (en) * | 2020-12-01 | 2021-02-19 | 威海鸿通管材股份有限公司 | Low-temperature pipe spiral winding equipment and forming process |
| WO2023185011A1 (en) * | 2022-03-31 | 2023-10-05 | 江苏正道海洋科技有限公司 | High-temperature-resistant heat-insulating flexible composite pipe |
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