Composite wear-resistant slurry-resistant low-voltage shore power cable

Abstract

The utility model discloses a composite wear-resistant slurry-resistant low-voltage shore power cable, which relates to the technical field of cables, and comprises a power wire core group, a ground wire core group, a control cable core group and an optical fiber unit, the power wire core group comprises a power wire core conductor, a wire core insulating layer is extruded outside the power wire core conductor, the ground wire core group comprises a ground wire core conductor, and the control cable core group comprises an optical fiber unit. Each control cable core group comprises a control cable core conductor, a control cable core insulation layer is wrapped outside the control cable core conductor, a control cable core shielding layer is wrapped outside the control cable core insulation layer, a control cable core inner protection layer is wrapped outside the control cable core shielding layer, the optical fiber unit comprises optical fiber groups, an aramid fiber layer is woven outside the multiple optical fiber groups, an optical fiber inner protection layer is wrapped outside the aramid fiber layer, and the optical fiber inner protection layer is woven outside the control cable core insulation layer. An optical fiber steel wire layer is wrapped outside the optical fiber inner protective layer, the optical fiber steel wire layer is formed by weaving stainless steel wires, and an optical fiber outer protective layer is wrapped outside the optical fiber steel wire layer. The cable has the beneficial effects that the reinforcing shielding layer is formed by combining and weaving the tinned copper wires and the aramid fibers, so that the tensile and bending-resistant performance of the cable is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a composite wear-resistant and mud-resistant low-voltage shore power cable. Background Technology

[0002] With the vigorous development of the marine industry, the large-scale construction of marine platforms, and the increasing number of ships, shore power cables have become applicable to a wider range of sites. Now, shore power cables are not only used for power transmission, but also for photoelectric transmission, signal control, and other applications.

[0003] A search revealed Chinese patent publication number CN216412717U, which discloses a photoelectric composite shore power reel cable. This patent uses a filament braided structure of inner and outer shielding layers to form a double-layer shielding structure for the conductive core. The filament braided structure is made by braiding metal wires inside and out using a braiding machine. This device has certain problems: it only shields and supports the conductive core through the braided metal wires, and the cable needs to be dragged during use, which may cause the filament braided structure to tear or bend. Utility Model Content

[0004] The purpose of this invention is to provide a composite wear-resistant and mud-resistant low-voltage shore power cable to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A composite wear-resistant and mud-resistant low-voltage shore power cable includes a power core assembly, a ground core assembly, a control cable core assembly, and an optical fiber unit. During cable assembly, the optical fiber unit and the control cable core assembly are placed in the gaps of the power core assembly. The power core assembly includes a power core conductor, which is made of multi-strand tinned copper wire twisted into a conductor core. The power core conductor is wrapped with non-woven fabric, and the non-woven fabric is extruded with a core insulation layer.

[0007] The ground core assembly includes a ground core conductor, which is made of multiple strands of tinned copper wire twisted together to form a conductor core. The ground core conductor is wrapped with non-woven fabric, and the non-woven fabric is extruded with ground core insulation. Both the core insulation layer and the ground core insulation are weather-resistant ethylene propylene insulation materials.

[0008] The control cable core assembly includes a control cable core conductor, which is covered by control cable core insulation made of weather-resistant ethylene propylene rubber. Multiple control cable core insulations are stranded together to form a cable. The control cable core insulation is covered by a control cable core shielding layer made of tin-plated copper wire braiding. The control cable core shielding layer is covered by an inner sheath made of thermoplastic elastomer material.

[0009] The optical fiber unit includes optical fiber groups, which use high-temperature resistant loose tubes. Multiple optical fiber groups are braided with aramid fiber layers. When multiple optical fiber groups are cabled, a non-metallic reinforcing core is placed in the center. The aramid fiber layers are wrapped with an inner optical fiber sheath, which is made of polymer composite material. The inner optical fiber sheath is wrapped with an optical fiber steel wire layer, which is made of stainless steel wire. The optical fiber steel wire layer is wrapped with a polymer composite material outer optical fiber protective layer.

[0010] Preferably, when controlling the conductor bundle of the cable core, an aramid fiber strand is added to the center of the tinned copper wire and twisted into a strand, and then twisted into conductor cores in different directions in successive layers.

[0011] Preferably, when the power core group, ground core group, control cable core group and optical fiber unit are combined to form a main cable, the power core group and ground core group are placed in the middle of the main cable.

[0012] Preferably, the gaps in the main cable are filled with cable filling material, which is filled with vulcanized rubber strips.

[0013] Preferably, the outer side of the main cable is covered with an inner sheath, which is made of a highly wear-resistant, mud-resistant, and flame-retardant sheath material. The inner sheath is covered with a reinforced shielding layer, which is woven from a combination of tin-plated copper wire and aramid fiber. The reinforced shielding layer is covered with an outer sheath, which is made of a highly wear-resistant, low-smoke, and flame-retardant polyolefin sheath material.

[0014] Preferably, the outer sheath is wrapped with a ring of reinforcing blocks, which are arranged in a trapezoidal gear-shaped ring array around the cable.

[0015] The beneficial effects are as follows: the reinforced shielding layer is woven from a combination of tin-plated copper wire and aramid fiber, which improves the cable's tensile and bending resistance.

[0016] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a composite wear-resistant and mud-resistant low-voltage shore power cable described in this utility model.

[0019] The reference numerals in the attached diagram are explained as follows: 1. Power conductor; 2. Core insulation layer; 3. Optical fiber group; 4. Non-metallic reinforcing core; 5. Aramid fiber layer; 6. Inner sheath of optical fiber; 7. Steel wire layer of optical fiber; 8. Outer protective layer of optical fiber; 9. Control cable conductor; 10. Control cable insulation; 11. Control cable shielding layer; 12. Inner sheath of control cable; 13. Cable filling; 14. Ground conductor; 15. Ground insulation; 16. Inner sheath; 17. Reinforced shielding layer; 18. Outer sheath; 19. Reinforcing block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figure 1 As shown, a composite wear-resistant and mud-resistant low-voltage shore power cable includes a power core group, a ground core group, a control cable core group, and an optical fiber unit. During cabling, the optical fiber unit and the control cable core group are placed in the gap of the power core group. The power core group includes a power core conductor 1, which is made of multi-strand tinned copper wire twisted into a conductor core. The power core conductor 1 is wrapped with non-woven fabric, and the non-woven fabric is extruded with a core insulation layer 2. The non-woven fabric is used to prevent the insulation material from penetrating and reducing the electrical performance.

[0024] The ground core assembly includes a ground core conductor 14, which is made of multiple strands of tinned copper wire twisted together to form a conductor core. The ground core conductor 14 is wrapped with non-woven fabric, and the non-woven fabric is extruded with ground core insulation 15. Both the core insulation layer 2 and the ground core insulation 15 are weather-resistant ethylene propylene insulation materials.

[0025] The control cable core assembly includes a control cable core conductor 9, which is covered by a control cable core insulation 10 made of weather-resistant ethylene propylene rubber. Multiple control cable core insulations 10 are twisted into a cable. The control cable core insulation 10 is covered by a control cable core shielding layer 11 made of tin-plated copper wire. The control cable core shielding layer 11 is covered by a control cable core inner sheath 12 made of thermoplastic elastomer material. Multiple control cores are twisted into a cable with a pitch controlled within 12 times. A layer of non-woven fabric is wrapped around the outside to improve the tensile strength and anti-interference ability of the control cable core.

[0026] The optical fiber unit includes optical fiber group 3, which uses high-temperature resistant loose tube. Multiple optical fiber groups 3 are braided with aramid fiber layer 5. When multiple optical fiber groups 3 are cabled, a non-metallic reinforcing core 4 is placed in the center. The aramid fiber layer 5 is wrapped with an inner optical fiber sheath 6, which is made of polymer composite material. The inner optical fiber sheath 6 is wrapped with an optical fiber steel wire layer 7, which is woven from stainless steel wire. The optical fiber steel wire layer 7 is wrapped with a polymer composite material outer optical fiber protective layer 8, forming a form of steel wire reinforcement in the middle and protective sleeves on both sides, which better protects the optical fiber from breakage during movement and dragging.

[0027] When controlling the 9 bundles of conductor wires in the cable core, an aramid fiber strand is added to the center of the tinned copper wire and twisted into a strand. The strands are then twisted in different directions in successive layers to form the conductor core.

[0028] When the power core group, ground core group, control cable core group and optical fiber unit are combined to form a main cable, the power core group and ground core group are placed in the middle of the main cable.

[0029] The gaps in the main cable are filled with cable filling material 13, which is filled with vulcanized rubber strips.

[0030] The outer side of the main cable is covered with an inner sheath 16, which is made of a highly wear-resistant, mud-resistant, and flame-retardant sheath material. The inner sheath 16 is covered with a reinforced shielding layer 17, which is woven from a combination of tin-plated copper wire and aramid fiber. The reinforced shielding layer 17 is covered with an outer sheath 18, which is made of a highly wear-resistant, low-smoke, and flame-retardant polyolefin sheath material.

[0031] The outer sheath 18 is wrapped with a ring of reinforcing blocks 19. The reinforcing blocks 19 are arranged in a trapezoidal gear-shaped ring array around the cable, which enhances the cable's wear resistance and provides good protection against mutual friction and collision during cable movement.

[0032] Working principle: First, the power conductor 1 and the ground conductor 14 are bundled together, and then each layer is twisted into conductor cores in different directions. The power conductor 1 and the ground conductor 14 are extruded. Then, multiple optical fiber groups 3 are twisted into a cable, and a non-metallic reinforcing core 4 is placed in the center. After the cable is formed, an aramid fiber reinforcing layer is braided to enhance the tensile strength of the optical fiber unit. The control cable core conductor 9 is made of tinned copper wire and aramid fiber twisted into strands, and then covered with control cable core insulation 10, which improves the tensile strength and anti-interference ability of the control cable core. Then, the conductors are combined into a whole, and the gaps are filled with cable filler 13 to give the cable good shape.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A composite wear-resistant and mud-resistant low-voltage shore power cable, comprising a power core assembly, a ground core assembly, a control cable core assembly, and an optical fiber unit, characterized in that: During cabling, the optical fiber unit and the control cable core group are placed in the gap of the power core group. The power core group includes a power core conductor (1). The power core conductor (1) is made of multiple strands of tin-plated copper wire twisted into a conductor core. The power core conductor (1) is wrapped with non-woven fabric, and the non-woven fabric is extruded with a core insulation layer (2). The ground core assembly includes a ground core conductor (14), which is made of multiple strands of tinned copper wire twisted together to form a conductor core. The ground core conductor (14) is wrapped with non-woven fabric, and the non-woven fabric is extruded with ground core insulation (15). Both the core insulation layer (2) and the ground core insulation (15) are weather-resistant ethylene propylene insulation materials. The control cable core assembly includes a control cable core conductor (9), which is covered with control cable core insulation (10). The control cable core insulation (10) is made of weather-resistant ethylene propylene rubber material. Multiple control cable core insulations (10) are twisted into a cable. The control cable core insulation (10) is covered with a control cable core shielding layer (11). The control cable core shielding layer (11) is made of tin-plated copper wire braid. The control cable core shielding layer (11) is covered with a control cable core inner sheath (12). The control cable core inner sheath (12) is made of thermoplastic elastomer material. The optical fiber unit includes an optical fiber group (3), which is made of high temperature resistant loose tube. Multiple optical fiber groups (3) are woven with an aramid fiber layer (5). When multiple optical fiber groups (3) are cabled, a non-metallic reinforcing core (4) is placed in the center. The aramid fiber layer (5) is wrapped with an optical fiber inner sheath (6). The optical fiber inner sheath (6) is made of polymer composite material. The optical fiber inner sheath (6) is wrapped with an optical fiber steel wire layer (7). The optical fiber steel wire layer (7) is woven with stainless steel wire. The optical fiber steel wire layer (7) is wrapped with a polymer composite optical fiber outer protective layer (8).

2. The composite wear-resistant and mud-resistant low-voltage shore power cable according to claim 1, characterized in that: When the control cable core conductor (9) is bundled, an aramid fiber strand is added to the center of the tinned copper wire and twisted into a strand, and then twisted into conductor cores in different directions in successive layers.

3. The composite wear-resistant and mud-resistant low-voltage shore power cable according to claim 1, characterized in that: When the power core group, ground core group, control cable core group and optical fiber unit are combined to form a main cable, the power core group and ground core group are placed in the middle of the main cable.

4. The composite wear-resistant and mud-resistant low-voltage shore power cable according to claim 1, characterized in that: The gaps in the main cable are filled with cable filler (13), which is filled with vulcanized rubber strips.

5. A composite wear-resistant and mud-resistant low-voltage shore power cable according to claim 1, characterized in that: The outer side of the main cable is covered with an inner sheath (16), which is made of a highly wear-resistant, mud-resistant, flame-retardant sheath material. The inner sheath (16) is covered with a reinforced shielding layer (17), which is woven from a combination of tin-plated copper wire and aramid fiber. The reinforced shielding layer (17) is covered with an outer sheath (18), which is made of a highly wear-resistant, low-smoke, flame-retardant polyolefin sheath material.

6. A composite wear-resistant and mud-resistant low-voltage shore power cable according to claim 5, characterized in that: The outer sheath (18) is wrapped with a ring of reinforcing blocks (19), which are arranged in a trapezoidal gear-shaped ring array around the cable.

Images