Marine power cable

Abstract

This utility model relates to the field of cable technology and provides a marine power flexible cable, including a conductor core, a sheath layer, and a composite layer between them; it also includes a central tensile strength mechanism and an elastic support mechanism; the central tensile strength mechanism includes a central tensile rope and a tensile locking sleeve; the outer side of the central tensile rope and the inner side of the tensile locking sleeve both have multiple continuous bidirectional conical structures protruding, namely conical protrusions and conical blocks, respectively, the conical protrusions and conical blocks being axially misaligned to form a locking connection; the elastic support mechanism includes a wrapping tape; the wrapping tape includes inner and outer layered sheathing tapes, adjacent sheathing tapes are closely fitted together, and an elastic support portion is embedded between adjacent sheathing tapes. Through the tension self-locking generated by the tensile locking sleeve and the central tensile rope of the central tensile strength mechanism under tension, together with the elastic support layer formed by the outer elastic support mechanism, the tensile strength of the cable is enhanced, and a double-layer protection is formed for the conductor core, effectively preventing conductor core breakage.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and more specifically, to a marine power flexible cable. Background Technology

[0002] Marine power flexible cables, also known as marine flexible electrical cables, are a type of cable with excellent flexibility designed specifically for the transmission and distribution of electrical energy in marine and marine engineering environments. Unlike ordinary fixed-lay cables, their core characteristics are "softness" and "flexibility," designed to adapt to the complex and compact wiring space inside ships and the continuous vibration, swaying, and impact generated during equipment operation;

[0003] Currently, in the actual application of marine power cables, it has been found that the cables are often subjected to pulling and dragging, which causes the conductors to bear a lot of stress and is prone to local breakage, which is not conducive to long-term stable use.

[0004] To address the aforementioned issues, this application proposes a marine power flexible cable. Utility Model Content

[0005] The purpose of this utility model is to provide a marine power flexible cable to solve the problem of easy breakage of the cable guide in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A marine power flexible cable includes a conductor core, a sheathing layer, and a composite layer between the two.

[0008] It also includes a central tensile strength mechanism and an elastic support mechanism;

[0009] The central tensile mechanism includes a central tensile rope and a tensile lock sleeve;

[0010] The outer side of the central tensile rope and the inner side of the tensile lock sleeve both have multiple continuous bidirectional conical structures protruding, namely conical protrusions and conical blocks, which are axially misaligned to form a snap-fit.

[0011] The flexible support mechanism includes wrapping straps;

[0012] The wrapping tape includes inner and outer layers of wrapping tape, with adjacent wrapping tapes adhering to each other and an elastic support portion embedded between adjacent wrapping tapes.

[0013] Preferably, the outer side of the tensile lock sleeve is provided with a flexible sleeve, which is located in the inner layer of the guide core.

[0014] Preferably, the outer side of the anti-tensile lock sleeve is provided with micro-convex texture.

[0015] Preferably, the wrapping tape is located in the inner or outer layer of the composite layer.

[0016] Preferably, the mating surfaces of adjacent covering strips are provided with arc-shaped grooves, and the opposite arc-shaped grooves are combined to form a circular groove structure.

[0017] Preferably, the elastic support portion corresponds to a circular groove structure.

[0018] Preferably, the composite layer includes a shielding layer and an insulating layer.

[0019] The beneficial effects of this utility model are:

[0020] 1. By setting up a central tensile strength mechanism, when the cable is subjected to tension, the self-locking mechanism is automatically triggered, transferring the tension from the conductor core to the tensile strength mechanism, effectively preventing the conductor core from breaking due to tension, greatly improving the tensile strength of the cable, and thus avoiding the problem of conductor breakage due to tension.

[0021] 2. Through the design of the elastic support mechanism, the elastic support part in the wrapping tape provides buffering and stress dispersion when the cable is subjected to tension, reducing local stress on the sheath, while maintaining the roundness of the cable and preventing the sheath from being crushed. The elastic support mechanism works in conjunction with the central tensile mechanism to form double protection from the inside out, enhancing the cable's durability and reliability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the axial planar structure of the cable of this utility model;

[0025] Figure 3 This is a schematic diagram of the radial cross-sectional structure of the cable according to this utility model;

[0026] Figure 4 This is a schematic diagram of the central tensile mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the elastic support mechanism structure of this utility model;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the diagram: 11. Guide core; 12. Covering layer; 13. Composite layer; 21. Central tensile rope; 211. Conical protrusion; 22. Tensile lock sleeve; 221. Conical block; 23. Flexible sleeve; 24. Wrapping tape; 241. Covering tape; 2411. Arc groove; 242. Elastic support. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "opening", "top and bottom", "thickness", "top", "middle", "length", "inner" and "around" indicate the orientation or positional relationship only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] A marine power flexible cable is designed to improve the tensile strength of the cable and prevent the conductor core 11 from breaking. The tension lock sleeve 22 of the central tensile mechanism and the central tensile rope 21 generate tension self-locking under tension, which, together with the elastic support layer formed by the outer elastic support mechanism, not only enhances the tensile performance of the cable, but also forms a double layer of protection for the conductor core, effectively preventing the conductor core 11 from breaking.

[0033] In some embodiments, the specific structure of the marine power flexible cable is as follows: Figure 1-5 As shown, it includes a conductor 11, a covering layer 12, and a composite layer 13;

[0034] The conductor core 11 is made of multiple stranded copper wires, preferably pure copper or tin-plated copper;

[0035] The covering layer 12 is the outermost protective sleeve, and the preferred material is polyvinyl chloride, polyurethane or neoprene rubber;

[0036] Composite layer 13 includes a shielding layer and an insulating layer. The shielding layer is preferably made of copper wire braid or aluminum foil, and the insulating layer is preferably made of cross-linked polyethylene or ethylene propylene rubber.

[0037] The cable also includes a central tensile strength mechanism and an elastic support mechanism;

[0038] The central tensile mechanism includes a central tensile rope 21, a tensile locking sleeve 22, and a flexible bundle sleeve 23;

[0039] Furthermore, the central tensile rope 21 (preferably made of high-strength fiber such as aramid or polyester) is a rope structure with multiple integral bidirectional conical protrusions on the outside, forming multiple spaced conical annular grooves that extend infinitely along the cable axis.

[0040] The tensile lock sleeve 22 (preferably made of polypropylene) has a hollow sleeve structure with multiple integrated bidirectional conical protrusions on the inside, which are conical blocks 221, forming multiple spaced conical annular grooves that extend infinitely along the cable axis.

[0041] The flexible sleeve 23 (preferably made of silicone rubber or thermoplastic elastomer) has a hollow sleeve structure and is fitted onto the outside of the tensile lock sleeve 22;

[0042] Among them, the outer side of the anti-tensile lock sleeve 22 is slightly raised with raised dots or cross-shaped lines;

[0043] It is understandable that the tensile lock sleeve 22 is fitted on the outside of the central tensile rope 21, and the conical annular grooves of the two are misaligned to form an axial engagement.

[0044] Specific application of the central tensile mechanism: When the cable is dragged and generates axial tension, the central tensile rope 21 will slide axially, thereby driving the conical protrusion 211 to abut against the conical block 221 to form a self-locking. This self-locking is triggered by the axial tension, which can not only replace 1 to bear the axial tension, but also resist the tension through self-locking. In addition, the tensile lock sleeve 22 enhances the interface bonding strength through the combination of the outer micro-protrusion structure and the flexible bundle sleeve 23, further improving the resistance performance of axial tension.

[0045] In addition, there is a gap between the conical block 221 and the conical protrusion 211, which can increase the space for movement when the cable is bent, reduce the bending stress, and thus improve the bending resistance of the cable.

[0046] The elastic support mechanism includes a wrapping tape 24, which is spirally wrapped around the outside or inside of the composite layer 13 to form a covering structure;

[0047] The wrapping tape 24 includes a covering tape 241 (preferably made of non-woven fabric, polyester tape or plastic tape) and an elastic support part 242 (preferably rubber or silicone, formed into a strip by extrusion or molding).

[0048] Furthermore, the covering tape 241 is divided into inner and outer layers, the two layers are attached to each other, and the surfaces that are attached to each other are provided with arc-shaped grooves to form arc-shaped grooves 2411;

[0049] Furthermore, the two opposing arc-shaped grooves 2411 combine to form a circular groove, and the elastic support part 242 is embedded inside the circular groove, forming a spiral bending structure as the covering tape 241 spirally wraps around it.

[0050] It should be noted that the wrapping tape 24 is a prefabricated component that can be assembled on the outside of the semi-finished cable before the extrusion forming of the covering layer 12, forming a built-in elastic support mechanism.

[0051] It is understandable that by placing the elastic support 242 inside the arc groove 2411 and then attaching the two wrapping strips 241 together and fixing them by adhesive, a complete wrapping strip 24 can be formed.

[0052] Specific application of the elastic support mechanism: When the cable is subjected to axial tension causing the central tensile mechanism to slip, the elastic support part 242 forms a buffer and stress redistribution, reducing the local stress on the sheathing layer 12;

[0053] In addition, the elastic support 242 can also maintain the roundness of the cable and prevent the sheath from being locally crushed.

[0054] Meanwhile, the elastic support 242 can resist the local radial force on the cable during dragging, resist external extrusion pressure to improve wear resistance, and ensure the integrity of the cable structure.

[0055] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A marine power flexible cable, characterized in that: It includes a conductor (11) and a covering layer (12) and a composite layer (13) between the two. It also includes a central tensile strength mechanism and an elastic support mechanism; The central tensile mechanism includes a central tensile rope (21) and a tensile lock sleeve (22); The outer side of the central tensile rope (21) and the inner side of the tensile lock sleeve (22) both have multiple continuous bidirectional conical structures protruding, namely conical protrusions (211) and conical blocks (221), and the conical protrusions (211) and conical blocks (221) are axially misaligned to form a snap-fit; The flexible support mechanism includes a wrapping strap (24); The wrapping tape (24) includes inner and outer layered wrapping tapes (241), adjacent wrapping tapes (241) are attached to each other, and an elastic support part (242) is embedded between adjacent wrapping tapes (241).

2. The marine power flexible cable according to claim 1, characterized in that: The outer side of the tensile lock sleeve (22) is fitted with a flexible bundle sleeve (23), which is located in the inner layer of the guide core (11).

3. The marine power flexible cable according to claim 1, characterized in that: The outer side of the tensile lock sleeve (22) is provided with a micro-convex texture.

4. The marine power flexible cable according to claim 1, characterized in that: The wrapping tape (24) is located in the inner or outer layer of the composite layer (13).

5. The marine power flexible cable according to claim 1, characterized in that: The mating surfaces of adjacent covering strips (241) are provided with arc-shaped grooves (2411), and the opposite arc-shaped grooves (2411) are combined to form a circular groove structure.

6. The marine power flexible cable according to claim 5, characterized in that: The elastic support (242) corresponds to a circular groove structure.

7. The marine power flexible cable according to claim 1, characterized in that: The composite layer (13) includes a shielding layer and an insulating layer.

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