CN222163890U - Deep sea flexible continuous pipe structure - Google Patents
Deep sea flexible continuous pipe structure Download PDFInfo
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- CN222163890U CN222163890U CN202421013827.1U CN202421013827U CN222163890U CN 222163890 U CN222163890 U CN 222163890U CN 202421013827 U CN202421013827 U CN 202421013827U CN 222163890 U CN222163890 U CN 222163890U
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- 239000010410 layer Substances 0.000 claims abstract description 77
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000004698 Polyethylene Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 239000011241 protective layer Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- -1 polyethylene Polymers 0.000 claims abstract description 5
- 229920000573 polyethylene Polymers 0.000 claims abstract description 5
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 4
- 239000011152 fibreglass Substances 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims abstract 5
- 230000003014 reinforcing effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004760 aramid Substances 0.000 abstract 1
- 229920003235 aromatic polyamide Polymers 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 8
- 239000000523 sample Substances 0.000 description 7
- 239000013535 sea water Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000007003 mineral medium Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
本发明提供一种深海柔性连续管结构，其解决了现有的管材由于洋流波浪方向、大小不定，受到浪涌和水流冲击力的作用，管材侧向往往拱弯成C型或S型，对管道影响较为严重的技术问题，可广泛应用于深海运输领域；具体管材的管壁由内至外依次是内衬层、补偿增强层、骨架层、隔离层、螺旋增强层、外保护层；内衬层的材料为超高分子量聚乙烯，补偿增强层由正反两道的等厚高强度高模量纤维和树脂固化而成，连续缠绕在内衬层的外侧；骨架层由高强度高模量纤维和树脂固化而成，隔离层由聚乙烯构成；螺旋增强层由玻璃钢或芳纶构成，外保护层PE或PU塑料构成，管壁内部还设置有光纤和光纤传感器，光纤传感器间隔距离设置，由光纤进行连接。
The invention provides a deep-sea flexible continuous pipe structure, which solves the technical problem that the existing pipes are often arched into a C-shape or S-shape laterally due to the uncertain direction and size of ocean current waves, the surge and water flow impact force, and the pipes have a serious impact on the pipeline. The pipe structure can be widely used in the field of deep-sea transportation. The pipe wall of the specific pipe is composed of an inner lining layer, a compensation reinforcement layer, a skeleton layer, an isolation layer, a spiral reinforcement layer, and an outer protective layer from the inside to the outside. The material of the inner lining layer is ultra-high molecular weight polyethylene, the compensation reinforcement layer is formed by solidifying high-strength and high-modulus fibers of equal thickness in both positive and negative directions and resin, and is continuously wound on the outer side of the inner lining layer; the skeleton layer is formed by solidifying high-strength and high-modulus fibers and resin, and the isolation layer is composed of polyethylene; the spiral reinforcement layer is composed of glass fiber reinforced plastics or aramid, and the outer protective layer is composed of PE or PU plastic. Optical fibers and optical fiber sensors are also arranged inside the pipe wall, and the optical fiber sensors are set at intervals and connected by optical fibers.
Description
Technical Field
The invention belongs to the technical field of deep sea transportation, and particularly relates to a deep sea flexible continuous pipe structure.
Background
Because the design standard of the deep sea pipeline is far higher than that of a land pipeline, and because the environment of the submarine pipeline is more complex and difficult to master than that of the land, the buoyancy of the pipeline and the external pressure of the deep sea are considered, and the dynamic influence of ocean currents, waves and tides on the pipeline is considered. The project of the key technology research of the non-metal non-adhesive flexible mixed transportation pipe of the deep sea mining of the key special item of the key technology and equipment of the key research and development plan of the key development plan of the fourteen-five countries born by the university of Chinese petroleum (Beijing) is obtained, the project number is 2022YFC2803700, and the method has profound significance for the exploration of the deep sea pipeline.
Because the ocean current wave direction and the size are variable, the pipe side direction tends to arch into a C shape or an S shape under the action of surge and water flow impact force, and the influence on the pipe is serious. The flexible pipeline has a complex structure, various loads are born, the structural damage is difficult to discover in time, extreme loads have great influence on the safety of the pipeline structure, and the leakage position of the pipeline is difficult to monitor. The mining minerals are transported to the inside of the pipe to generate serious abrasion, even the abrasion is too large to collide or leak, so that irreversible damage is caused to the pipe, and even the pipe is scrapped.
Disclosure of Invention
The invention aims to solve the defects of the technology and provides a deep sea flexible continuous pipe structure.
Therefore, the invention provides a deep sea flexible continuous pipe structure, wherein the pipe wall is sequentially provided with an inner liner layer, a compensation reinforcing layer, a framework layer, an isolation layer, a spiral reinforcing layer and an outer protective layer from inside to outside;
The material of the inner liner layer is ultra-high molecular weight polyethylene, the compensation reinforcing layer is formed by solidifying equal-thickness high-strength high-modulus fibers and resin in the front and back directions, and is continuously wound on the outer side of the inner liner layer in the circumferential direction at an angle of 45-60 degrees, the framework layer is formed by solidifying the high-strength high-modulus fibers and the resin, and is continuously wound on the outer side of the reinforcing layer in the circumferential direction at an angle of 40-70 degrees, the isolation layer is formed by polyethylene, the spiral reinforcing layer is formed by glass fiber reinforced plastic or aramid fiber, is continuously wound on the outer side of the isolation layer in the circumferential direction at an angle of 30-50 degrees, is distributed in a left-right double spiral manner, and is formed by outer protection layer PE or PU plastic;
The inside of the pipe wall is also provided with an optical fiber and an optical fiber sensor, the optical fiber sensors are arranged at intervals and are connected by the optical fiber for detecting whether the pipe wall is broken or not.
The optical fiber sensor is fixed by flexible resin, wherein a spiral groove is formed in the outer surface of the lining layer, and the optical fiber sensor are arranged in the spiral groove.
Wherein the optical fiber and the optical fiber sensor can also be arranged in the compensation enhancing layer.
Further, in the winding process of the compensation enhancement layer, a space is reserved, and the optical fiber sensor are also wound in the compensation enhancement layer.
Further, each layer of structure adopts a non-bonding process.
The invention provides a deep sea flexible continuous pipe structure, which has the following beneficial effects:
The non-adhesive continuous pipe structure has the advantages of small bending radius, corrosion resistance, large design space, light weight and the like, is low in cost, can work under the working condition of within 6000m in deep sea, and greatly reduces the overall weight of the pipeline due to the non-metal design.
Through setting up optic fibre and optical fiber sensor, can detect liquid and send alarm signal, and then confirm the pipeline position of breaking, repair the pipeline. By arranging the spiral groove, the bending radius of the pipe can be increased, and when the pipe is transported, the harder pipe is coiled and placed, so that the storage space is reduced.
Drawings
FIG. 1 is a view of the inside of a pipe wall of example 1 of the present invention;
FIG. 2 is a view showing the inside of the pipe wall in example 2 of the present invention;
FIG. 3 is a cross-sectional view of the pipe wall of example 2 of the present invention;
The figure shows that the material comprises 1 part of the lining layer, 2 parts of the compensation reinforcing layer, 3 parts of the framework layer, 4 parts of the isolating layer, 5 parts of the spiral reinforcing layer, 6 parts of the outer protective layer, 7 parts of the optical fiber, 8 parts of the spiral groove.
Detailed Description
The invention will be further described with reference to the drawings and specific examples to aid in understanding the context of the invention. The method used in the invention is a conventional method unless specified otherwise, and the raw materials and devices used are conventional commercial products unless specified otherwise.
The invention provides a deep sea flexible continuous pipe structure, wherein the pipe wall is sequentially provided with an inner liner layer 1, a compensation reinforcing layer 2, a framework layer 3, an isolation layer 4, a spiral reinforcing layer 5 and an outer protective layer 6 from inside to outside.
The lining layer 1 is made of ultra-high molecular weight polyethylene, is used as the inner wall of a pipeline in direct contact with a pipeline transportation mineral medium, has high strength and good wear resistance, and can effectively prolong the service life of the lining layer 1.
The compensation reinforcing layer 2 is formed by solidifying equal-thickness high-strength high-modulus fibers and resin in the front and back directions, and is continuously wound on the outer side of the lining layer 1 in a small-pitch annular direction of 50 degrees, so that the lining layer 1 is protected, the strength of the lining layer 1 is increased, and the effect of bearing hoop stress is achieved.
The framework layer 3 is used as a stress foundation of the whole flexible pipe and is formed by solidifying high-strength high-modulus fibers and resin, and is continuously wound on the outer side of the reinforcing layer in a circumferential direction with a small screw pitch of 55 degrees to bear the radial stress of the whole flexible pipe.
The isolation layer 4 is made of polyethylene, and because the deep sea operation belongs to dynamic working conditions, the pipe is in a mutual extrusion state under the multiple actions of wave and deep sea pressure and self weight, and the dynamic working conditions enable certain sliding friction to be generated between the layers so as to generate heat locally, and the friction coefficient can be reduced by using the polyethylene material, so that a good isolation and lubrication effect is achieved.
The spiral reinforcing layer 5 is formed by glass fiber reinforced plastic or aramid fiber, is continuously wound on the outer side of the isolating layer in a 40-degree large-pitch annular direction, is distributed in a left-right double spiral mode, and is balanced in torsion generated in the axial direction and bears axial tension.
The outer protective layer 6 is made of high polymer corrosion-resistant materials, such as PE and PU plastics, and has the functions of corrosion resistance, wear resistance, external permeation resistance and pipe protection.
Each layer of structure is manufactured by adopting a non-bonding process, functions are dispersed into corresponding layers, and the non-bonding structure can realize the flexibility of the pipe and facilitate the coiling storage while ensuring the functions.
The pipe also comprises an optical fiber 7 and an optical fiber sensor, wherein the optical fiber sensor is arranged on the inner wall of the pipe at intervals and is connected by the optical fiber 7. When the pipe is used, after the inner wall of the pipe is severely worn and penetrated, seawater seeps into the inner side compensation reinforcing layer 2 under the action of pressure, the seawater salinity is sensed through the optical fiber sensor in the spiral groove 8, the signal is fed back and collected, the damaged position can be known, and the alarm processing is carried out, so that the further loss is prevented.
The optical fiber sensor adopts a detection probe with the volume similar to that of the optical fiber. In one embodiment, the salinity detection probe is used, and the salinity detection probe can achieve a detection range of more than 1.0mol/L through different output light intensities under different salinity environments. According to this characteristic, the detection probe can output light of different intensities after the intrusion of the seawater, and can know whether the seawater is intruded or not.
It should be noted that, the detection probe of the optical fiber sensor can measure different parameters in the pipe wall according to actual requirements, such as a temperature detection probe and a pressure detection probe.
Example 1:
As shown in fig. 1, a spiral groove 8 is formed on the outer surface of the inner liner layer 1, and the optical fiber 7 and the optical fiber sensor are arranged inside the spiral groove 8 and then fixed by flexible resin. By arranging the spiral groove 8, the bending radius of the pipe can be increased, and when the pipe is transported, the harder pipe is coiled and placed, so that the storage space is reduced.
Example 2:
As shown in fig. 2 and 3, the optical fiber 7 and the optical fiber sensor are disposed in the compensation enhancing layer 2. In the winding process of the compensation reinforcing layer 2, a space is reserved, and the optical fiber 7 and the optical fiber sensor are also wound in the compensation reinforcing layer 2. By arranging the optical fiber 7 on the compensation reinforcing layer 2, the loss of the structural strength of the lining layer 1 during grooving can be avoided, and the service life is longer.
In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must be provided with specific orientations, be configured and operated in specific orientations, and thus are not to be construed as limiting the present invention.
However, the foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention are intended to fall within the scope of the claims.
Claims (4)
1. A deep sea flexible continuous pipe structure is characterized in that a pipe wall sequentially comprises an inner liner layer, a compensation reinforcing layer, a framework layer, an isolation layer, a spiral reinforcing layer and an outer protective layer from inside to outside;
The material of the inner liner layer is ultra-high molecular weight polyethylene, the compensation reinforcing layer is formed by solidifying equal-thickness high-strength high-modulus fibers and resin in the front and back directions, and is continuously wound on the outer side of the inner liner layer in the circumferential direction at an angle of 45-60 degrees, the framework layer is formed by solidifying the high-strength high-modulus fibers and the resin, and is continuously wound on the outer side of the reinforcing layer in the circumferential direction at an angle of 40-70 degrees, the isolation layer is formed by polyethylene, the spiral reinforcing layer is formed by glass fiber reinforced plastic or aramid fiber, is continuously wound on the outer side of the isolation layer in the circumferential direction at an angle of 30-50 degrees, is distributed in a left-right double spiral manner, and is formed by outer protection layer PE or PU plastic;
The inside of the pipe wall is also provided with an optical fiber and an optical fiber sensor, the optical fiber sensors are arranged at intervals and are connected by the optical fiber for detecting whether the pipe wall is broken or not.
2. The deep sea flexible coiled tubing structure of claim 1, wherein the outer surface of the inner liner is provided with a spiral groove, and the optical fiber sensor are disposed within the spiral groove.
3. The deep sea flexible coiled tubing structure of claim 1, wherein the optical fibers and optical fiber sensors are disposed in a compensation reinforcement layer.
4. A deep sea flexible pipe structure according to any one of claims 1-3, wherein each layer of structure is formed by a non-adhesive process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421013827.1U CN222163890U (en) | 2024-05-11 | 2024-05-11 | Deep sea flexible continuous pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421013827.1U CN222163890U (en) | 2024-05-11 | 2024-05-11 | Deep sea flexible continuous pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222163890U true CN222163890U (en) | 2024-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421013827.1U Active CN222163890U (en) | 2024-05-11 | 2024-05-11 | Deep sea flexible continuous pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222163890U (en) |
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- 2024-05-11 CN CN202421013827.1U patent/CN222163890U/en active Active
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