LCP combined armored submarine cable
Through the combined armor layer design of LCP fiber bundles, PE wires and armored steel wires intersected, the problems of traditional submarine cables are solved, and the lightweight, low-cost and corrosion-resistant submarine cable design is achieved to adapt to the complex submarine environment.
Patent Information
- Application Number
- CN202421678738.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-15
AI Technical Summary
The armored layer of traditional submarine cables mainly uses steel wire or aramid fiber, which leads to large weight, high cost and susceptible to seawater corrosion, short service life, and the aramid fiber has weak lateral pressure resistance and is greatly affected by submarine current disturbances.
The combined armor layer design is adopted with the LCP fiber bundle, PE wire and armored steel wire intersected. The LCP fiber has high strength and corrosion resistance. The PE wire density is smaller than that of the steel wire, which reduces the cable weight and improves corrosion resistance. At the same time, the inner lining layer design avoids wear of the core wire layer and the armored layer, and the outer ring asphalt layer provides anti-corrosion protection.
It realizes that while meeting mechanical strength, reduces the weight and cost of cables, improves corrosion resistance, adapts to complex subsea environments, and extends service life.
Smart Images
Figure CN223155689U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of submarine cables, in particular to an LCP combined armored submarine cable. Background Art
[0002] In order to ensure the strength of the cable in the seabed, the armor layer of traditional submarine cables is mainly woven directly with steel wire structure or aramid fiber. However, the single steel wire armor structure makes the cable heavy, expensive, and easily corroded by seawater, with a short service life. The aramid fiber armor is more expensive, has weak lateral pressure resistance, and is greatly affected by the disturbance of seabed currents. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide an LCP combined armored submarine cable which can reduce the weight of the cable, reduce the cable cost and improve the corrosion resistance while meeting the mechanical strength performance.
[0004] The technical solution adopted by the utility model to solve the above problems is: an LCP combined armored submarine cable, comprising a body, an outer ring of the body is provided with an armor layer for ensuring the mechanical strength of the cable, the armor layer comprises armor steel wires and PE wires, an LCP fiber bundle is provided on the axis of the PE wire, and the armor steel wires and the PE wires are staggered and closely connected along the circumference of the body.
[0005] Compared with the prior art, the utility model has the advantages that: a new armor layer is woven by combining PE wire with LCP fiber bundle and armor steel wire, wherein LCP fiber is a liquid crystal polymer, which not only has the chemical properties of thermal stability and chemical corrosion resistance, but also has the mechanical properties of high strength and high modulus. Under the wrapping of PE wire with LCP fiber bundle and armor steel wire, the PE wire also has a high mechanical strength, which is sufficient to meet the mechanical strength requirements of submarine cables; and both LCP fiber material and PE material have a density less than that of armor steel wire, so that the PE wire with the same diameter as the armor steel wire has a smaller mass, thereby reducing the weight of the cable; and LCP fiber material and PE material have stronger corrosion resistance than armor steel wire, thereby improving the corrosion resistance of the cable; in practical applications, the price ratio of steel wire with the same diameter to PE wire with LCP fiber bundle of the same diameter is between 4:1-3:1, so the combined armor layer of PE wire with LCP fiber bundle and armor steel wire has a price advantage, which can reduce the cable cost.
[0006] As an improvement of the utility model, the diameter of the armored steel wire is the same as the diameter of the PE wire. Through the improvement, the volume uniformity of the armored steel wire and the PE wire after the cable is formed is ensured, thereby better ensuring the overall strength of the cable, which is suitable for complex submarine environments.
[0007] As an improvement of the present utility model, a core wire layer is provided inside the body. An inner lining layer is provided between the core wire layer and the armor layer. The armor steel wires and the PE wires are stranded around the axis of the core wire layer. Through this improvement, in the complex seabed environment, when the cable is disturbed by ocean currents, reciprocating bending will occur, and relative movement will occur between the core wire layer and the armor layer during bending. Through the design of the inner lining layer, abrasion between the core wire layer and the armor layer can be avoided, and the abrasion is concentrated on the inner lining layer, achieving the purpose of protecting the core wire layer and the armor layer.
[0008] As an improvement of the present utility model, the core wire layer includes three core wires. The three core wires are stranded into a bundle along the axis of the body. Each core wire includes a conductor, an insulating layer, a metal sleeve, and a non-metallic outer sheath from the inside out. There are multiple conductors in each core wire. Through this improvement, multiple core wires are provided inside the cable, improving the electrical signal transmission power of the cable.
[0009] As an improvement of the present utility model, the gaps between the core wires are filled with water-blocking glue and the cross-section of the core wire layer is filled into a circular shape. The inner lining layer is wound with a glue-bonded tape. Through this improvement, the water-blocking effect on the core wires is ensured, thus guaranteeing the service quality of the core wires in the seabed.
[0010] As an improvement of the present utility model, an asphalt layer is provided on the outer circle of the armor layer. Through this improvement, an anti-corrosion effect is achieved, extending the service life of the cable.
[0011] As an improvement of the present utility model, the diameter of the LCP fiber bundle is greater than 1 / 20 of the diameter of the PE wire and less than 1 / 5 of the diameter of the PE wire. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present utility model.
[0013] As shown in the figure: 1. Armor layer, 1.1. Armor steel wire, 1.2. PE wire, 1.2.1. LCP fiber bundle, 2. Inner lining layer, 3. Core wire, 3.1. Conductor, 3.2. Insulating layer, 3.3. Metal sleeve, 3.4. Non-metallic outer sheath, 4. Water-blocking glue, 5. Asphalt layer. Detailed Embodiment
[0014] The following further describes the embodiments of the present utility model with reference to the drawings.
[0015] Such as Figure 1As shown in the figure, an LCP composite armored submarine cable includes a main body. An armored layer 1 for ensuring the mechanical strength of the cable is provided on the outer circle of the main body. The armored layer 1 includes armored steel wires 1.1 and PE wires 1.2. An LCP fiber bundle 1.2.1 is provided on the axis of the PE wire 1.2. The armored steel wires 1.1 and the PE wires 1.2 are distributed alternately along the circumferential direction of the main body and are closely attached. The diameters of the armored steel wires 1.1 and the PE wires 1.2 are the same.
[0016] Three layers of core wires are provided inside the main body. An inner liner layer 2 is provided between the three layers of core wires and the armored layer 1. The armored steel wires 1.1 and the PE wires 1.2 are twisted around the axis of the three layers of core wires.
[0017] The three layers of core wires include three core wires 3. The three core wires 3 are twisted into a bundle along the axis of the main body. Each core wire 3 includes a conductor 3.1, an insulating layer 3.2, a metal sleeve 3.3, and a non-metallic outer sheath 3.4 from the inside to the outside. A plurality of conductors 3.1 are provided in each core wire 3. The gaps between the core wires 3 are filled with a water-blocking glue 4 and the cross-section of the three layers of core wires is filled into a circular shape. The inner liner layer 2 is wound with a tape with glue.
[0018] An asphalt layer 5 is provided on the outer circle of the armored layer 1.
[0019] The diameter of the LCP fiber bundle 1.2.1 is greater than 1 / 20 of the diameter of the PE wire 1.2 and less than 1 / 5 of the diameter of the PE wire 1.2. The diameter of the LCP fiber bundle 1.2.1 can be changed according to the strength requirements. During the process of forming the PE wire 1.2, first select an LCP fiber bundle 1.2.1 that meets the requirements, and then extrude the PE material on the outer layer of the LCP fiber bundle 1.2.1 with the LCP fiber bundle 1.2.1 as the axis, so that the diameter of the formed PE wire 1.2 is always the same as the diameter of the steel wire, but the diameter of the LCP fiber bundle 1.2.1 is different. Among them, the PE material uses MDPE (medium density polyethylene).
[0020] Through the design of the LCP composite armored layer 1, the cable can reduce the weight of the cable, reduce the cost of the cable and improve the corrosion resistance while meeting the mechanical strength performance. At the same time, the mechanical strength of the cable can be adjusted according to the requirements, making the cable more applicable. It can prepare different armored layers 1 according to the laying depth of the submarine cable and the complexity of the seabed environment within a certain depth of the seabed, so as to ensure the use quality of the submarine cable.
[0021] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.
Claims
1. An LCP combined armored submarine cable, characterized in that: It includes a body. An armor layer (1) for ensuring the mechanical strength of the cable is provided on the outer circle of the body. The armor layer (1) includes armor steel wires (1.1) and PE wires (1.2). An LCP fiber bundle (1.2.1) is provided on the axis of the PE wire (1.2). The armor steel wires (1.1) and the PE wires (1.2) are distributed alternately along the circumferential direction of the body and are closely attached to each other.
2. The LCP combined armored submarine cable according to claim 1, wherein: The diameter of the armor steel wire (1.1) is the same as the diameter of the PE wire (1.2).
3. The LCP combined armored submarine cable according to claim 2, characterized in that: A core wire (3) layer is provided inside the body. A lining layer (2) is provided between the core wire (3) layer and the armor layer (1). The armor steel wires (1.1) and the PE wires (1.2) are twisted around the axis of the core wire (3) layer.
4. The LCP combined armored submarine cable according to claim 3, wherein: The core wire (3) layer includes three core wires (3). The three core wires (3) are twisted into a bundle along the axis of the body. Each core wire (3) includes a conductor (3.1), an insulating layer (3.2), a metal sleeve (3.3), and a non-metallic outer sheath (3.4) from the inside to the outside. A plurality of conductors (3.1) are provided in each core wire (3).
5. The LCP combined armored submarine cable according to claim 3, characterized in that: The gap between the core wires (3) is filled with a water-blocking glue (4) and the cross-section of the core wire (3) layer is filled into a circular shape. The lining layer (2) is wound with a tape with glue.
6. The LCP combined armored submarine cable according to claim 2, wherein: An asphalt layer (5) is provided on the outer circle of the armor layer (1).
7. The LCP combined armored submarine cable according to claim 1, characterized in that: The diameter of the LCP fiber bundle (1.2.1) is greater than 1 / 20 of the diameter of the PE wire (1.2) and less than 1 / 5 of the diameter of the PE wire (1.2).