CN116428425A - Thermoplastic composite flexible pipe used in marine environment - Google Patents
Thermoplastic composite flexible pipe used in marine environment Download PDFInfo
- Publication number
- CN116428425A CN116428425A CN202310130876.7A CN202310130876A CN116428425A CN 116428425 A CN116428425 A CN 116428425A CN 202310130876 A CN202310130876 A CN 202310130876A CN 116428425 A CN116428425 A CN 116428425A
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- layer
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- flexible pipe
- outer protective
- thermoplastic composite
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- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 20
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 116
- 239000011241 protective layer Substances 0.000 claims abstract description 28
- 239000013535 sea water Substances 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims description 19
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 229920001903 high density polyethylene Polymers 0.000 claims description 6
- 239000004700 high-density polyethylene Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
- F16L11/083—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire three or more layers
-
- 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
- F16L11/10—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
-
- 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
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
-
- 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
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1063—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sheet wrapped around the pipe
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a thermoplastic composite flexible pipe for use in marine environments. The anti-seepage pipeline comprises an inner liner layer and an outer protective layer, wherein a pressure-bearing layer is arranged between the inner liner layer and the outer protective layer, an anti-seepage layer is arranged between the pressure-bearing layer and the outer protective layer, the inner liner layer is used for preventing oil gas in the pipeline from permeating, the anti-seepage layer is used for preventing seawater in the external environment from permeating, and the pressure-bearing layer is used for resisting the internal pressure and the external pressure of the pipeline. The invention has the beneficial effects of perfectly completing the conveying function of the common oil and gas pipeline, having better corrosion resistance, fatigue resistance, higher strength, lighter weight and better permeation prevention function and being more suitable for marine environment.
Description
Technical Field
The invention relates to the technical field of manufacturing of thermoplastic composite material pipelines, in particular to a thermoplastic composite material flexible pipe for marine environments.
Background
With the continuous development of global technology, the demand for energy is increasing. The oil and gas production industry is also continuously developing, and the demand for pipelines applied to ocean oil and gas production is increasing. Compared with the land operation working condition, the marine oil gas development is much more complicated, and has high requirements on the performances of fatigue resistance, compression resistance, temperature resistance, corrosion resistance and the like of pipelines. The flexible pipe has the advantages of corrosion resistance, light weight, coiling, easy installation and recovery, comprehensive cost reduction and the like, and is paid attention to the industry.
When the conventional flexible pipe is used, the external part of the flexible pipe is easy to be worn greatly to reduce the service life of the flexible pipe, the strength of the flexible pipe is poor, the flexible pipe is easy to be influenced by external pressure to use, and in addition, the corrosion resistance and the fatigue resistance of the flexible pipe in a marine environment are slightly insufficient.
Disclosure of Invention
According to the technical problems, the thermoplastic composite flexible pipe is light in weight, good in corrosion resistance, fatigue resistance and permeability resistance, and suitable for marine oil and gas exploitation. The invention adopts the following technical means:
the utility model provides a thermoplastic composite flexible pipe for marine environment, includes inner liner and outer protective layer, be equipped with the bearing layer between inner liner and the outer protective layer, be equipped with the barrier layer between bearing layer and the outer protective layer, the inner liner is used for preventing the inside oil gas infiltration of pipeline and goes out, the barrier layer is used for preventing that external environment sea water from permeating and going into, the bearing layer is used for resisting the inside and outside pressure of pipeline.
Further, the inner liner layer and the impermeable layer are made of HDPE materials.
Further, the thickness of the lining layer is 2-5 mm, and the thickness of the impermeable layer is 2-5 mm.
Further, the bearing layer is made of a thermoplastic composite material of carbon fiber reinforced polyphenylene sulfide, the number of the bearing layer is at least 6, the two innermost layers of the 6 layers adopt a cross winding mode, the winding angle direction of the front layer of composite material belt is opposite to that of the rear layer of composite material belt, and the layering angle is 40-45 degrees; the two middle layers of the 6 layers of the layers are the same in layer angle, the layer angle is 0 degrees, the two outermost layers of the 6 layers of the layers are in a cross winding mode, the winding angle direction of the front layer of composite material belt is opposite to the winding angle direction of the rear layer of composite material belt, and the layer angle is 40-45 degrees.
Further, the composite material belt adopted by the pressure bearing layer has the fiber content of 60-70%.
Further, the outer protective layer material is a glass fiber tape.
Further, the outer protective layer is formed by winding, the number of the layers of the outer protective layer is at least 4, the number of the layers of the outer protective layer is [0 degree/+/-alpha/0 degree ], the angle alpha of the layers is 20-25 degrees, and the forming thickness is 1.5-4 mm.
The invention has the flexibility and strength of the common steel flexible pipe, and also has better seawater resistance and H resistance 2 S, CO resistance 2 Resistance to H 2 The corrosion of chemical substances, has excellent anti-seepage performance, has excellent anti-fatigue property, and has the remarkable advantages of light weight, high cost performance and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention.
In the figure: 1. an inner liner layer; 2. a pressure bearing layer; 3. an impermeable layer; 4. outer protective layer
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a thermoplastic composite flexible pipe for marine environment comprises an inner liner layer and an outer protective layer, a pressure bearing layer 2 is arranged between the inner liner layer 1 and the outer protective layer 4, an impermeable layer 3 is arranged between the pressure bearing layer and the outer protective layer, the innermost layer of the thermoplastic composite flexible pipe is the inner liner layer, the outermost layer of the thermoplastic composite flexible pipe is the outer protective layer, the inner liner layer is used for preventing oil gas in a pipeline from penetrating out, the impermeable layer is used for preventing seawater in the external environment from penetrating in and providing certain mechanical strength protection, and the pressure bearing layer is used for resisting the internal pressure and the external pressure of the pipeline.
The lining layer and the impermeable layer are made of HDPE materials, have good anti-corrosion and impermeable properties, and are suitable for marine environments. Unlike metal materials, HDPE is not affected by hydrogen embrittlement like metal, and has good compatibility with hydrogen. And the permeability of HDPE at 20 ℃ is calculated to be 8.2X10 -10 mol H 2 And (m.s.MPa), and has good hydrogen permeation resistance. In addition, the density of HDPE is 0.94-0.96 g/cm 3 And compared with the traditional steel flexible pipe, the weight of the flexible pipe can be greatly reduced.
The thickness of the lining layer is 2-5 mm, and the thickness of the impermeable layer is 2-5 mm, and the impermeable layer are all polymer extrusion layers.
The bearing layer is made of carbon fiberThermoplastic composite material of strong polyphenylene sulfide (PPS) with fiber mass ratio of 0.6-0.7, wherein the density of carbon fiber T800 is 1.81g/cm 3 Tensile strength of 5490MPa and PPS density of 1.36g/cm 3 . CF/PPS as fiber reinforced resin composite material has high strength, corrosion resistance, fatigue resistance and other excellent performances, and is more suitable for marine environment compared with metal.
The number of the pressure bearing layers is at least 6, the pressure bearing layers can be more than 6 according to the strength requirement of the thermoplastic composite flexible pipe, and the 6 layers are one minimum cycle of the pressure bearing layers. The innermost two layers of the 6 layers are in a cross winding mode, the winding angle direction of the front layer of composite material belt is opposite to that of the rear layer of composite material belt, and the layering angle is 40-45 degrees; the two middle layers of the 6 layers of the layers are the same in layer angle, the layer angle is 0 degrees, the two outermost layers of the 6 layers of the layers are in a cross winding mode, the winding angle direction of the front layer of composite material belt is opposite to the winding angle direction of the rear layer of composite material belt, and the layer angle is 40-45 degrees.
The bearing layer can well resist the internal and external pressure of the pipeline, and the minimum circulating 6 layers of layers can resist the load from all directions to a great extent, and also have good shock resistance.
In the embodiment, the T800/PPS composite material belt adopted by the bearing layer has the fiber content of 60-70%, and the material has good corrosion resistance and fatigue resistance to marine environment.
The outer protective layer is made of glass fiber tape, the resin is thermoplastic resin, and the fiber content is 60% -65%.
The outer protective layer is formed by winding, the number of the outer protective layer layers is at least 4, the number of the outer protective layer layers is [0 degree/+/-alpha/0 degree ], the angle alpha of the outer protective layer is 20-25 degrees, and the forming thickness is 1.5-4 mm. The outer protective layer is used for isolating the external environment and the pipeline, preventing the pipeline from being worn in the transportation, installation and use processes, and is suitable for marine environment and has good corrosion resistance; and to a certain extent further improve the pressure resistance of the pipeline
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The thermoplastic composite flexible pipe for the marine environment is characterized by comprising an inner liner layer and an outer protective layer, wherein a pressure bearing layer is arranged between the inner liner layer and the outer protective layer, an impermeable layer is arranged between the pressure bearing layer and the outer protective layer, the inner liner layer is used for preventing oil gas inside a pipeline from penetrating out, the impermeable layer is used for preventing seawater in the external environment from penetrating in, and the pressure bearing layer is used for resisting the internal pressure and the external pressure of the pipeline.
2. The flexible pipe of thermoplastic composite for marine environments of claim 1, wherein the inner liner and the barrier layer are both HDPE materials.
3. A thermoplastic composite flexible pipe for marine environments according to claim 1 or 2, wherein the thickness of the inner liner layer is 2-5 mm and the thickness of the barrier layer is 2-5 mm.
4. The flexible pipe made of thermoplastic composite materials for marine environment according to claim 1, wherein the pressure bearing layer is made of thermoplastic composite materials of carbon fiber reinforced polyphenylene sulfide, the number of the pressure bearing layer is at least 6, the two innermost layers of the 6 layers are in a cross winding mode, the winding angle direction of the former layer of composite material belt is opposite to the winding angle direction of the latter layer of composite material belt, and the layering angle is between 40 degrees and 45 degrees; the two middle layers of the 6 layers of the layers are the same in layer angle, the layer angle is 0 degrees, the two outermost layers of the 6 layers of the layers are in a cross winding mode, the winding angle direction of the front layer of composite material belt is opposite to the winding angle direction of the rear layer of composite material belt, and the layer angle is 40-45 degrees.
5. The flexible pipe of thermoplastic composite material for marine environments of claim 4, wherein said pressure bearing layer comprises a composite material tape fiber content of 60% to 70%.
6. The flexible pipe of thermoplastic composite for use in a marine environment of claim 1, wherein the outer protective layer material is fiberglass tape.
7. The flexible pipe of thermoplastic composite material for marine environments according to claim 1 or 6, wherein the outer protective layer is formed by winding, the number of layers of the outer protective layer is at least 4, the layers of the outer protective layer are [0 °/±α/0 ° ], the angle α of the layers is between 20 ° and 25 °, and the forming thickness is between 1.5mm and 4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310130876.7A CN116428425A (en) | 2023-02-17 | 2023-02-17 | Thermoplastic composite flexible pipe used in marine environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310130876.7A CN116428425A (en) | 2023-02-17 | 2023-02-17 | Thermoplastic composite flexible pipe used in marine environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116428425A true CN116428425A (en) | 2023-07-14 |
Family
ID=87089695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310130876.7A Pending CN116428425A (en) | 2023-02-17 | 2023-02-17 | Thermoplastic composite flexible pipe used in marine environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116428425A (en) |
-
2023
- 2023-02-17 CN CN202310130876.7A patent/CN116428425A/en active Pending
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