Ocean composite pipe cable for shallow water

Abstract

The utility model relates to an ocean composite pipe cable for shallow water, which comprises an inner pressure sealing layer, a pressure-resistant pressure-bearing layer, an inner wear-resistant adhesive tape, an inner tensile steel wire bundle, a middle wear-resistant adhesive tape, a first middle sheath layer, a second middle sheath layer, an outer tensile steel wire bundle, an outer wear-resistant adhesive tape and an outer sheath which are arranged from inside to outside, a cable and a steel pipe are arranged in an annular gap between the outer wall of the first middle sheath layer and the inner wall of the second middle sheath layer, the annular gap is filled with filler, the steel pipe is used for conveying gas or liquid, the cable is used for conveying electric energy or signals, and the filler is used for insulating heat and limiting the positions of the cable and the steel pipe. The marine composite pipe cable for shallow water can simultaneously realize fluid transportation and power transmission in a severe marine environment, has excellent pressure resistance, tension resistance, wear resistance, sealing performance and flexibility, effectively improves the integration level and reliability of a whole system, and reduces the construction and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of submarine cable technology, and in particular to a marine composite cable for shallow water use. Background Technology

[0002] With the rapid development of offshore oil and gas development, offshore wind power, and deep-sea engineering, traditional single-function hoses or cables can no longer meet the needs of simultaneously transporting fluids and electricity in the complex marine environment. Hoses and cables must possess multiple properties such as pressure resistance, abrasion resistance, tensile strength, sealing, and good flexibility to ensure the reliability and safety of the system.

[0003] Current technologies often employ independently laid flexible conduits and cables, which not only increases construction difficulty and cost but also suffers from low space utilization and poor overall reliability. Therefore, there is an urgent need for an integrated, high-performance composite conduit and cable structure to meet the comprehensive requirements of marine engineering. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that in the prior art, hoses and cables are independent working units, which requires high costs to meet the usage requirements of hoses and cables.

[0005] To address the aforementioned technical problems, this utility model provides a shallow-water marine composite cable, comprising: an inner pressure sealing layer, a pressure-bearing layer, an inner wear-resistant tape, an inner tensile steel wire bundle, an intermediate wear-resistant tape, a first intermediate sheath layer, a second intermediate sheath layer, an outer tensile steel wire bundle, an outer wear-resistant tape, and an outer sheath, arranged from the inside out. An annular gap is provided between the outer wall of the first intermediate sheath layer and the inner wall of the second intermediate sheath layer. At least one cable and at least one steel pipe are disposed within the annular gap, which is filled with a filler. The steel pipe is used to transport gas or liquid, the cable is used to transmit electrical energy or signals, and the filler is used for heat insulation and to define the position of the cable and steel pipe. This shallow-water marine composite cable aims to provide a structurally sound and high-performance integrated marine composite cable capable of simultaneously transporting fluids and transmitting electricity in harsh marine environments. It exhibits excellent pressure resistance, tensile strength, wear resistance, sealing properties, and flexibility, effectively improving the integration and reliability of the overall system and reducing construction and maintenance costs.

[0006] In one embodiment of this utility model, the inner pressure sealing layer is located in the inner layer of the cable, and the inner pressure sealing layer is a hollow circular tube in the axial direction.

[0007] In one embodiment of this utility model, the pressure-resistant and bearing layer is made of stainless steel or duplex steel, and the pressure-resistant and bearing layer is wrapped around the outer layer of the inner pressure sealing layer.

[0008] In one embodiment of this utility model, the inner wear-resistant tape, the middle wear-resistant tape, and the outer wear-resistant tape are all polyurethane elastic tapes. The inner wear-resistant tape is wrapped around the outer layer of the pressure-bearing layer, the middle wear-resistant tape is wrapped around the outer layer of the inner tensile steel wire bundle, and the outer wear-resistant tape is wrapped around the outer layer of the outer tensile steel wire bundle.

[0009] In one embodiment of this utility model, the inner tensile steel wire bundle includes a plurality of steel wires, which are wound in a spiral direction around the outer circumference of the inner wear-resistant rubber tape.

[0010] In one embodiment of this utility model, the cable is a multi-core high-voltage cable, and when there are multiple cables, the multiple cables are arranged in a ring array.

[0011] In one embodiment of this utility model, the steel pipe is a hollow circular pipe, and the material of the steel pipe is 304 or 316L stainless steel. A steel pipe is provided between each of the adjacent cables, and the steel pipe and the cable are on the same circumference.

[0012] In one embodiment of this utility model, the filler material is rubber.

[0013] In one embodiment of the present invention, the outer tensile steel wire bundle includes a plurality of steel wires, which are wound in a spiral direction around the outer circumference of the second intermediate sheath layer.

[0014] In one embodiment of this utility model, the outer sheath is formed in one step by hot extrusion.

[0015] Compared with the prior art, the shallow-water marine composite cable of this invention has the following advantages:

[0016] 1. It combines the functions of power transmission, liquid-gas mixed transmission and structural load-bearing; through the internal integration of multi-core cables, pressure-bearing structure and tensile structure, it achieves the coexistence of power signal transmission, liquid-gas mixed transmission and structural safety.

[0017] 2. Achieve structural integration and space optimization; integrate multiple functional units within a limited cross-section to meet the requirements of marine engineering for compact structure and reasonable weight.

[0018] This utility model relates to a shallow-water marine composite cable that can be used in combination with different cable types (such as high-voltage cables and fiber optic hybrid cables). The outer sheath can be made of corrosion-resistant materials such as polyamide, cross-linked polyethylene, or high-density polyethylene. The armor structure is selected based on the pressure level of the sea area and the material and winding method. The structural dimensions can be customized according to requirements. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0020] Figure 1 This is a cross-sectional view of a shallow-water marine composite cable in a preferred embodiment of the present invention.

[0021] Explanation of reference numerals in the accompanying drawings: 1. Inner pressure sealing layer; 2. Pressure-bearing layer; 3. Inner wear-resistant tape; 4. Inner tensile steel wire bundle; 5. Intermediate wear-resistant tape; 6. First intermediate sheath layer; 7. Cable; 8. Steel pipe; 9. Filler; 10. Second intermediate sheath layer; 11. Outer tensile steel wire bundle; 12. Outer wear-resistant tape; 13. Outer sheath. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0023] Reference Figure 1 As shown, the shallow-water marine composite cable of this utility model includes: an inner pressure sealing layer 1, a pressure-bearing layer 2, an inner wear-resistant tape 3, an inner tensile steel wire bundle 4, an intermediate wear-resistant tape 5, a first intermediate sheath layer 6, a second intermediate sheath layer 10, an outer tensile steel wire bundle 11, an outer wear-resistant tape 12, and an outer sheath 13, arranged from the inside and outside. An annular gap is provided between the outer wall of the first intermediate sheath layer 6 and the inner wall of the second intermediate sheath layer 10. At least one cable 7 and at least one steel pipe 8 are disposed within the annular gap, and the annular gap is filled with a filler 9. The steel pipe 8 is used to transport gas or liquid, the cable 7 is used to transmit electrical energy or signals, and the filler 9 is used for heat insulation and to define the positions of the cable 7 and the steel pipe 8.

[0024] The inner pressure sealing layer, multiple intermediate sheaths, and outer sheath provide multi-level waterproofing; the materials used are corrosion-resistant, seawater-resistant, and adaptable to high-temperature environments.

[0025] In the above structure, the inner pressure sealing layer 1 is located in the inner layer of the pipeline, and the inner pressure sealing layer 1 is a hollow circular tube in the axial direction. The inner pressure sealing layer 1 is set on the innermost side of the pipeline, and is made of PVDF or HDPE. It is extruded and continuously wrapped in a ring shape to form a boundary layer for transporting fluid, which is pressure-resistant, corrosion-resistant, and prevents media leakage.

[0026] In the above structure, the pressure-bearing layer 2 is made of stainless steel or duplex steel, and it is wound around the outer layer of the inner pressure sealing layer 1. The pressure-bearing layer 2 is an armored layer, employing a C or Z-type interlocking winding structure with a winding angle close to 90 degrees. It is fitted around the outer side of the inner pressure sealing layer, made of high-strength stainless steel or duplex steel, and withstands external pressure, providing circumferential support for the entire pipeline. The armored structure of the pressure-bearing layer 2 is based on prior art patent application number CN200820039913.4, entitled "Structure of Armored Layer 3 in Armored Cables".

[0027] In the above structure, the inner wear-resistant tape 3, the middle wear-resistant tape 5, and the outer wear-resistant tape 12 are all polyurethane elastic tapes. The inner wear-resistant tape 3 is wound around the outer layer of the pressure-bearing layer 2, the middle wear-resistant tape 5 is wound around the outer layer of the inner tensile steel wire bundle 4, and the outer wear-resistant tape 12 is wound around the outer layer of the outer tensile steel wire bundle 11. The inner wear-resistant tape 3, the middle wear-resistant tape 5, and the outer wear-resistant tape 12, when wound around the outer layer, can reduce interlayer friction.

[0028] In the above structure, the inner tensile steel wire bundle 4 comprises several steel wires, which are wound in a spiral direction around the outer circumference of the inner wear-resistant rubber tape 3. The inner tensile steel wire bundle 4 is composed of multiple high-strength steel wires tightly arranged to form a bundle-like unit. The tensile bundle-like unit is wound at a certain spiral angle, typically 35-60°, to provide longitudinal tensile strength and prevent damage to the pipe body during laying or under tensile loads. The first intermediate sheath layer 6 is continuously extruded and coated on the outer layer of the intermediate wear-resistant rubber tape 5, providing protection against seawater, corrosion, and mechanical damage.

[0029] In the above structure, the cable 7 is a multi-core high-voltage cable. When there are multiple cables 7, they are arranged in a ring array. The multi-core high-voltage cable is built-in and covered with a waterproof protective layer, enabling the transmission of electrical energy or signals from the submarine equipment to the shore or platform.

[0030] In the above structure, the steel pipe 8 is a hollow circular tube, and the material of the steel pipe 8 is 304 or 316L stainless steel. A steel pipe 8 is provided between each adjacent cable 7, and the steel pipe 8 and cable 7 are on the same circumference. The cable and steel pipe are arranged coaxially, with partitioned support by a filling layer to improve space utilization. The steel pipe 8 transports liquids or gases, and its purpose is: 1. media transport; 2. local heating or cooling to prevent low-temperature embrittlement or high-temperature aging; 3. providing radial support.

[0031] In the above structure, the filler 9 is made of rubber. The space between the steel pipe 8 and the cable 7 is uniformly filled with lightweight rubber, which serves as a buffer, protector, and heat insulation, preventing the steel pipe 8 and the cable 7 from moving or colliding with each other. The second intermediate sheath layer 10 is continuously extruded and coated on the outside of the filler 9, providing protection against seawater, corrosion, and mechanical damage.

[0032] In the above structure, the outer tensile steel wire bundle 11 comprises several steel wires, which are wound in a spiral direction around the outer circumference of the second intermediate sheath layer 10. The outer tensile steel wire bundle 11 is a bundle-shaped unit composed of multiple high-strength steel wires tightly arranged together. The bundle-shaped unit is wound at a certain spiral angle, usually 35-60°, to provide longitudinal tensile strength and prevent the pipe body from being damaged under laying or tensile loads.

[0033] In the above structure, the outer sheath 13 is formed in one step by hot extrusion. The outer sheath 13 resists external environmental erosion and mechanical damage through continuous extrusion coating.

[0034] The shallow-water marine composite conduit cable of this utility model achieves the following in its structural design:

[0035] 1. Improved space utilization and wiring safety: The cable and hollow tube are arranged coaxially, and the filling layer provides zoned support and vibration isolation protection, avoiding eccentric bending or load impact on the cable core during service, thereby improving the cable transmission performance and safety.

[0036] 2. Excellent tensile strength: The combination of double-layer tensile steel wire and multiple wear-resistant tapes significantly improves the overall tensile strength and service life.

[0037] 3. Excellent sealing performance, with multi-layer sheath and internal pressure sealing layer design to ensure that internal fluids will not leak.

[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A marine composite pipe cable for shallow water use, characterized in that, include: The system consists of an inner pressure sealing layer, a pressure-bearing layer, an inner wear-resistant tape, an inner tensile steel wire bundle, an intermediate wear-resistant tape, a first intermediate sheath layer, a second intermediate sheath layer, an outer tensile steel wire bundle, an outer wear-resistant tape, and an outer sheath. An annular gap is provided between the outer wall of the first intermediate sheath layer and the inner wall of the second intermediate sheath layer. At least one cable and at least one steel pipe are provided in the annular gap, and the annular gap is filled with a filler. The steel pipe is used to transport gas or liquid, the cable is used to transmit electrical energy or signals, and the filler is used for heat insulation and to define the position of the cable and the steel pipe.

2. The marine composite pipe cable for shallow water according to claim 1, characterized in that: The inner pressure sealing layer is located in the inner layer of the cable, and the inner pressure sealing layer is a hollow circular tube in the axial direction.

3. The marine composite pipe in shallow water according to claim 2, characterized in that: The pressure-resistant and bearing layer is made of stainless steel or duplex steel, and is wrapped around the outer layer of the inner pressure sealing layer.

4. The marine composite pipe cable for shallow water use according to claim 1, characterized in that: The inner wear-resistant tape, the middle wear-resistant tape, and the outer wear-resistant tape are all polyurethane elastic tapes. The inner wear-resistant tape is wrapped around the outer layer of the pressure-bearing layer, the middle wear-resistant tape is wrapped around the outer layer of the inner tensile steel wire bundle, and the outer wear-resistant tape is wrapped around the outer layer of the outer tensile steel wire bundle.

5. The marine composite pipe and hose for shallow water use according to claim 1, characterized in that: The inner tensile steel wire bundle includes several steel wires, which are wound in a spiral direction around the outer circumference of the inner wear-resistant rubber tape.

6. The marine composite pipe and hose of claim 1, wherein: The cable is a multi-core high-voltage cable. When there are multiple cables, the multiple cables are arranged in a ring array.

7. The marine composite pipe in shallow water according to claim 6, characterized in that: The steel pipe is a hollow round pipe, and the material of the steel pipe is 304 or 316L stainless steel. Steel pipes are provided between adjacent cables, and the steel pipes and cables are on the same circumference.

8. The marine composite pipe and hose of claim 1, wherein: The filler material is rubber.

9. The marine composite pipe and hose of claim 1, wherein: The outer tensile steel wire bundle includes several steel wires, which are wound in a spiral direction around the outer circumference of the second intermediate sheath layer.

10. The marine composite pipe cable for shallow water use according to claim 1, characterized in that: The outer sheath is formed in one step by hot extrusion.

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