CN114645978A - Marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions - Google Patents

Marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions Download PDF

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Publication number
CN114645978A
CN114645978A CN202011498527.3A CN202011498527A CN114645978A CN 114645978 A CN114645978 A CN 114645978A CN 202011498527 A CN202011498527 A CN 202011498527A CN 114645978 A CN114645978 A CN 114645978A
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CN
China
Prior art keywords
layer
armor layer
wound
outer side
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011498527.3A
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Chinese (zh)
Inventor
李兰
刘栋杰
宋平娜
孙大林
李高
崔新盟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wudi Haizhong Flexible Pipe Manufacturing Co ltd
Original Assignee
Wudi Haizhong Flexible Pipe Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wudi Haizhong Flexible Pipe Manufacturing Co ltd filed Critical Wudi Haizhong Flexible Pipe Manufacturing Co ltd
Priority to CN202011498527.3A priority Critical patent/CN114645978A/en
Publication of CN114645978A publication Critical patent/CN114645978A/en
Pending legal-status Critical Current

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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
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
    • 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
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/34—Heating of pipes or pipe systems using electric, magnetic or electromagnetic fields, e.g. using induction, dielectric or microwave heating
    • 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
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/153—Arrangements for the insulation of pipes or pipe systems for flexible pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means

Abstract

The invention discloses a marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions. The skin-associated cable and the heating pipe are arranged in the integrated layer, and the heating pipe is used for heating, so that heat is transferred to the tensile armor layer, the heat insulation performance of the flexible pipeline is improved, and the problem of pipeline solidification when oil products in marginal small oil fields such as low output of the flexible pipeline, high condensation and high viscosity are output is solved; meanwhile, the monitoring optical fiber is arranged on the integrated layer, online real-time monitoring is carried out on the pipeline leakage, stress and displacement conditions, the conditions of sea surface pollution and the like caused by sudden pipeline leakage can be effectively reduced, and the stress and displacement conditions can be analyzed by analyzing the strain of the optical fiber, so that pre-control is carried out in advance.

Description

Marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions
Technical Field
The invention relates to a marine non-bonded flexible pipeline, in particular to a marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions, and belongs to the technical field of marine oil-gas medium conveying.
Background
The submarine pipeline is a main carrier for marine oil and gas transmission, the flexible pipeline is used as an upgrading and updating product of a steel pipe, has the characteristics of high flexibility, low construction cost, strong corrosion resistance, strong terrain adaptability and reusability, is suitable for various pipeline applications such as mixed transportation, oil transportation, gas transportation, water injection, chemical agents, deep sea risers, jumper pipes and the like for marine oil and gas exploitation, and currently, the flexible pipeline is considered to be used for replacing the steel pipe in more and more oil field development because the flexible pipeline is more convenient and quicker to install than the steel pipe, and if the flexible pipeline is used for replacing the steel pipe in the oil field development, a large amount of offshore construction cost can be saved.
The yield of offshore marginal oil fields is low, the solidification point of oil products is high, the heat preservation requirement is improved, and the heat preservation problem of pipelines still cannot be met by winding a common heat preservation belt; meanwhile, a good online monitoring means for the flexible pipeline does not exist, and the intelligent ball for online monitoring of the steel pipe cannot be applied to the flexible pipeline.
It is against this background that the present patent application proposes a marine unbonded flexible pipeline with skin heat tracing and fiber monitoring capabilities.
Disclosure of Invention
The main object of the present invention is to overcome the above mentioned disadvantages of the prior art and to provide a marine non-bonded flexible pipeline with skin heat tracing and fiber monitoring functions.
The invention is realized by the following technical scheme:
a marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions comprises a framework layer, an internal pressure sealing layer, a compression-resistant armor layer, a tensile armor layer, an integrated layer, a heat insulation layer and an outer cladding layer, wherein all the layers are in non-bonded connection;
the framework layer is positioned at the innermost part of the pipeline and is of a stainless steel band S-shaped interlocking structure;
the inner pressure sealing layer is not bonded and wound on the outer side of the framework layer, is made of any one of polyethylene, polyamide and polyvinylidene fluoride, and has a thickness ranging from 5 mm to 12 mm;
the compression-resistant armor layer is wound on the outer side of the inner pressure sealing layer in a non-bonding mode, the compression-resistant armor layer is formed by steel belts in a forward and reverse bidirectional winding mode, the thickness range of the compression-resistant armor layer is 0.6-1.3 mm, and the width range of the compression-resistant armor layer is 50-80 mm;
the tensile armor layer is wound on the outer side of the compression-resistant armor layer in a non-bonding mode, the tensile armor layer is formed by spirally winding flat steel, the thickness range of the tensile armor layer is 2-5 mm, and the width range of the tensile armor layer is 6-12 mm;
the integrated layer is wound on the outer side of the tensile armor layer in a non-bonding mode, the integrated layer is composed of a plurality of skin cables, heating pipes, monitoring optical fibers, a small-diameter steel pipe and a limiting heat preservation band, the heating pipes are uniformly wound on the outer side of the tensile armor layer, the small-diameter steel pipe is uniformly arranged in a staggered mode with the heating pipes and is uniformly wound on the outer side of the tensile armor layer, the limiting heat preservation band is filled between the heating pipes and the small-diameter steel pipe, the skin cables are arranged in the heating pipes, and the monitoring optical fibers are arranged in the small-diameter steel pipe;
the heat-insulating layer is wound on the outer side of the integrated layer in a non-bonding mode and is formed by spirally winding two or more layers of heat-insulating belts;
the outer coating layer is wound on the outer side of the heat insulation layer in a non-bonding mode and is made of any one of high-density polyethylene, medium-density polyethylene and polyamide resin.
The invention has the beneficial effects that:
the invention discloses a marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions, wherein a skin heat tracing cable and a heating pipe are arranged in the flexible pipeline, and the heating pipe is used for heating, so that heat is transferred to a tensile armor layer, the heat preservation performance of the flexible pipeline is improved, and the problem of pipeline solidification during the outward transportation of oil products in marginal small oil fields, such as low output of the flexible pipeline, high condensation and high viscosity, and the like is solved; the monitoring optical fiber is arranged in the flexible pipeline, online real-time monitoring is carried out on the leakage, stress and displacement conditions of the pipeline, the conditions of sea surface pollution and the like caused by sudden leakage of the pipeline can be effectively reduced, and the stress and displacement conditions of the pipeline can be analyzed by analyzing the strain of the optical fiber to carry out pre-control in advance.
The invention is further illustrated with reference to the following figures and examples.
Drawings
FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the pipeline of the present invention;
fig. 2 is a schematic diagram of the integrated layers of the preferred embodiment of the present invention.
The parts in the drawings are numbered as follows: 1. a framework layer; 2. an internal pressure sealing layer; 3. a compression-resistant armor layer; 4. a tensile armor layer; 5. an integration layer; 6. a heat-insulating layer; 7. an outer cladding layer; 8. a skin cable; 9. heating a tube; 10. monitoring the optical fiber; 11. a small-diameter steel pipe; 12. a spacing heat preservation belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, a marine non-adhesive flexible pipeline with skin heat tracing and optical fiber monitoring functions comprises a framework layer 1, an internal pressure sealing layer 2, a compression-resistant armor layer 3, a tensile armor layer 4, an integrated layer 5, an insulating layer 6 and an external cladding layer 7, wherein all the layers are in non-adhesive connection; the framework layer 1 is positioned at the innermost part of the pipeline and is of a stainless steel strip S-shaped interlocking structure; the inner pressure sealing layer 2 is wound on the outer side of the framework layer 1 in a non-bonding mode, the inner pressure sealing layer 2 is made of any one of polyethylene, polyamide and polyvinylidene fluoride, and the thickness range of the inner pressure sealing layer is 5-12 mm; the compression-resistant armor layer 3 is wound on the outer side of the inner pressure sealing layer 2 in a non-bonding mode, the compression-resistant armor layer 3 is formed by steel belts through positive and negative bidirectional winding, the thickness range of the compression-resistant armor layer 3 is 0.6-1.3 mm, and the width range of the compression-resistant armor layer 3 is 50-80 mm; the tensile armor layer 4 is wound on the outer side of the compression-resistant armor layer 3 in a non-bonding mode, the tensile armor layer 4 is formed by spirally winding flat steel, the thickness range of the tensile armor layer 4 is 2-5 mm, and the width range of the tensile armor layer 4 is 6-12 mm; the integrated layer 5 is wound outside the tensile armor layer 4 in a non-bonding mode, the integrated layer 5 is composed of a skin cable 8, a plurality of heating pipes 9, monitoring optical fibers 10, a small-diameter steel pipe 11 and a limiting heat preservation belt 12, the heating pipes 9 are uniformly wound outside the tensile armor layer 4, the small-diameter steel pipe 11 is uniformly arranged on the same layer in a staggered mode with the heating pipes 9 and uniformly wound outside the tensile armor layer 4, the limiting heat preservation belt 12 is filled between each heating pipe 9 and the small-diameter steel pipe 11 to limit the heating pipes 9 and the small-diameter steel pipe 11, the thickness of the limiting heat preservation belt 12 is equal to or slightly larger than the diameter of the heating pipes 11 and the small-diameter steel pipe 12, the skin cable 8 is arranged inside the heating pipes 9, the heating pipes are heated by alternating current conducted to the skin cable, heat is further transferred to the inside of a pipeline, and the monitoring optical fibers 10 are arranged inside the small-diameter steel pipe 11; the heat preservation layer 6 is wound on the outer side of the integrated layer 5 in a non-bonding mode, the heat preservation layer 6 is formed by spirally winding two or more layers of heat preservation belts, and the heat preservation layer 6 is used for reducing heat emitted by the heated tensile armor layer 4 from being dissipated outwards; the outer coating layer 7 is non-bonded and wound on the outer side of the heat preservation layer 6, and the outer coating layer 7 is made of any one of high-density polyethylene, medium-density polyethylene and polyamide resin.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (1)

1. The marine non-bonded flexible pipeline with the functions of skin heat tracing and optical fiber monitoring is characterized by comprising a framework layer (1), an inner pressure sealing layer (2), a compression-resistant armor layer (3), a tensile armor layer (4), an integrated layer (5), a heat-insulating layer (6) and an outer coating layer (7), wherein all the layers are connected in a non-bonding manner;
the framework layer (1) is positioned at the innermost part of the pipeline and is of a stainless steel strip S-shaped interlocking structure;
the inner pressure sealing layer (2) is wound on the outer side of the framework layer (1) in a non-bonding mode, the inner pressure sealing layer (2) is made of any one of polyethylene, polyamide and polyvinylidene fluoride, and the thickness range of the inner pressure sealing layer is 5-12 mm;
the compression-resistant armor layer (3) is wound on the outer side of the inner pressure sealing layer (2) in a non-bonding mode, the compression-resistant armor layer (3) is formed by steel strips in a forward and reverse bidirectional winding mode, the thickness range of the compression-resistant armor layer (3) is 0.6-1.3 mm, and the width range of the compression-resistant armor layer is 50-80 mm;
the tensile armor layer (4) is wound on the outer side of the compression-resistant armor layer (3) in a non-bonding mode, the tensile armor layer (4) is formed by spirally winding flat steel, the thickness range of the tensile armor layer (4) is 2-5 mm, and the width range of the tensile armor layer (4) is 6-12 mm;
the integrated layer (5) is wound on the outer side of the tensile armor layer (4) in a non-bonding mode, the integrated layer (5) is composed of a plurality of skin cables (8), heating pipes (9), monitoring optical fibers (10), small-diameter steel pipes (11) and limiting heat preservation belts (12), the heating pipes (9) are uniformly wound on the outer side of the tensile armor layer (4), the small-diameter steel pipes (11) are uniformly arranged in a staggered mode with the heating pipes (9) and are uniformly wound on the outer side of the tensile armor layer (4), the limiting heat preservation belts (12) are filled between the heating pipes (9) and the small-diameter steel pipes (11), the skin cables (8) are arranged inside the heating pipes (9), and the monitoring optical fibers (10) are arranged inside the small-diameter steel pipes (11);
the heat-insulating layer (6) is wound on the outer side of the integrated layer (5) in a non-bonding mode, and the heat-insulating layer (6) is formed by spirally winding two or more layers of heat-insulating belts;
the outer coating layer (7) is wound on the outer side of the heat insulation layer (6) in a non-bonding mode, and the outer coating layer (7) is made of any one of high-density polyethylene, medium-density polyethylene and polyamide resin.
CN202011498527.3A 2020-12-17 2020-12-17 Marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions Pending CN114645978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011498527.3A CN114645978A (en) 2020-12-17 2020-12-17 Marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011498527.3A CN114645978A (en) 2020-12-17 2020-12-17 Marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions

Publications (1)

Publication Number Publication Date
CN114645978A true CN114645978A (en) 2022-06-21

Family

ID=81990648

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011498527.3A Pending CN114645978A (en) 2020-12-17 2020-12-17 Marine non-bonded flexible pipeline with skin heat tracing and optical fiber monitoring functions

Country Status (1)

Country Link
CN (1) CN114645978A (en)

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