CN116092728A

CN116092728A - Flexible composite reel cable

Info

Publication number: CN116092728A
Application number: CN202211679899.5A
Authority: CN
Inventors: 王义林; 张军虎; 谢海珠; 董文新; 陆明超
Original assignee: Jiangsu Xinchangfeng Cable Co ltd
Current assignee: Jiangsu Xinchangfeng Cable Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-09

Abstract

The invention relates to the technical field of wires and cables, and discloses a flexible composite reel cable which comprises power wire cores, a filling layer, an inner sheath, an outer tensile layer and an outer sheath, wherein the surface wall of each power wire core is provided with a convex gradual change extension part along the axial direction, so that the joints of three groups of power wire cores are mutually attached; through setting up the compound conductor core of multiple diameter conductor and semiconductor enhancement core transposition, make the electric power sinle silk under the minor diameter, have stronger axial tensile ability, prevent broken string ability, make power transmission more stable, the part of the mutual transposition of electric power sinle silk has set up gradual change extension simultaneously, the transposition department does not have the space in the middle of making three group electric power sinle silk, the holistic radial compressive capacity reinforcing of cable core, and the whole additional cable core that does not have of cable body does not increase the cable body external diameter, make the whole compactness of cable body, light in weight.

Description

Flexible composite reel cable

Technical Field

The invention relates to the technical field of wires and cables, in particular to a flexible composite reel cable and a preparation method thereof.

Background

The reel cable is applied to reels, transportation machinery and conveyors, the reel cable is guided by a towing shaft or other similar devices to carry out folding and unfolding movements, the cable is often required to have smaller bending radius in use, and is a flexible mobile cable for supplying power or controlling connection in the process of frequent movement, and the reel cable not only needs flexibility, but also needs certain tensile and compression resistance because the cable is in a hanging and winding state with a large length in the process of use.

The existing reel cable is generally provided with a steel wire or a tensile fiber core in the middle of a cable core, so that the overall tensile property of the cable is improved, but the wire diameter of the cable is increased, the ratio of the section of a conductor is reduced, the current-carrying capacity of the cable under the same wire diameter is reduced, and the cable under the condition of the same conductor section has the defects of thicker wire diameter, increased weight and occupation of the reel area.

Prior art literature:

patent literature: CN109448911B tensile reel cable

Disclosure of Invention

According to a first aspect of the object of the present invention, a flexible composite drum cable is presented, comprising:

the power wire cores are arranged into three groups and are mutually stranded in a tangent mode, and a group of optical fiber wire cores and two groups of signal wire cores are stranded at the outer sides of two adjacent power wire cores;

the filling layer is filled in gaps among the power wire core, the optical fiber wire core and the signal wire core, and is wrapped by a wrapping layer to form a composite cable core with a circular section;

the inner sheath is extruded outside the wrapping layer;

the outer tensile layer is coated on the outer side of the inner sheath;

the outer sheath is extruded outside the outer tensile layer;

the surface wall of each power wire core is provided with a convex gradual change extension part along the axial direction, and the extension angle of the gradual change extension part is set to be one hundred twenty degrees, so that the connection parts of the three groups of power wire cores are mutually attached;

and the outside of electric power sinle silk is equipped with along clockwise twine in proper order in the tensile layer of three the electric power sinle silk outside, tensile layer is set up to aramid fiber silk braid.

Preferably, the power core comprises a conductor core, an insulating layer and a tensile core, wherein the conductor core is sequentially coated on the outer side of the conductor core from inside to outside, and a plurality of groups of tensile cores which are symmetrical in center around the axis and parallel to the axis are embedded in the insulating layer.

Preferably, the conductor core comprises a first conductor core and a second conductor core which are stranded from inside to outside in multiple layers, the diameter of the first conductor core is larger than that of the second conductor core, and a semiconductor reinforcing core is stranded between the first conductor core and the second conductor core.

Preferably, the conductor core includes three or more conductor layers, the first conductor core is provided with one or more conductor layers, and the outermost conductor layer is provided with the second conductor core.

Preferably, the diameter of the first conductor core is set to be 1.2 to 5 times the diameter of the second conductor core.

Preferably, the first conductor core and the second conductor core comprise copper conductors, copper alloy conductors, aluminum alloy conductors, or a mixed conductor of any two.

Preferably, the semiconductor reinforcing core comprises a mixed braided wire of copper wires and aramid wires, wherein the copper wires account for more than 50%.

Preferably, the tensile layer is arranged in more than one, and the tensile layer is wound on the outer sides of the three groups of the power wire cores in a loose winding mode.

Preferably, the outer tensile layer comprises an aramid fiber woven mesh.

In combination with the technical scheme of the invention, the flexible composite reel cable as an example preparation process comprises the following steps:

step 1, manufacturing a power wire core:

1.1 Manufacturing a conductor core: selecting a first conductor core with the diameter of D1 and a second conductor core with the diameter of D2, wherein D1 is larger than D2, forming an inner layer wire core by the first conductor core or the second conductor core in a single core or twisting direction, twisting more than two layers of the first conductor core or the second conductor core or mixed layers of the first conductor core and the second conductor core on the outer layer of the inner layer wire core, and filling a twisted semiconductor reinforced core in a gap between the first conductor core and the second conductor core to enable the section of the conductor core to be approximate to a circle;

the inner-layer wire core comprises at least one layer of first conductor core, and the outermost-layer wire core is formed by twisting the second conductor core;

the semiconductor reinforced core comprises a mixed braided wire of copper wires and aramid wires, and the proportion of the copper wires is larger than that of the mixed braided wire;

1.2 Manufacturing an insulating layer: arranging a plurality of tensile cores parallel to the axis on the periphery of the conductor core, extruding an inner layer of semi-conductive polyolefin, a middle layer of crosslinked polyethylene and an outer layer of semi-conductive polyolefin material outside the conductor core and the tensile cores in a three-layer coextrusion mode by using an extruder to form an insulating layer with a gradual-change extension part in the section;

the extension angle of the gradual change extension part is set to be one hundred twenty degrees, the tensile core is positioned at the radial middle position of the insulating layer, and the tensile core comprises a fiber core made of aramid fiber ropes and a coating layer coated outside the fiber core;

1.3 Manufacturing a metal shielding layer: forming a metal shielding layer of the metal shielding layer by using a copper strip with the wrapping width of 30-35 mm of a wrapping machine, wherein the average covering rate of the copper strip is not less than 15% of the width of the copper strip;

step 2, manufacturing an optical fiber core: the central position adopts a steel wire reinforced core, a plurality of groups of optical fiber cores are sequentially stranded from inside to outside at the outer side of the steel wire reinforced core by utilizing a stranding machine, and a polyethylene inner sheath, water-blocking paste and a polyethylene outer sheath are arranged from inside to outside at the outer side of the optical fiber cores;

step 3, manufacturing a signal wire core: twisting a plurality of groups of twisted pairs with insulation into a cable core with a circular section by using a twisting machine, coating a copper braiding layer on the outer side of the cable core by using a braiding machine, wrapping copper foil on the outer side of the copper braiding layer by using a wrapping machine, and extruding polyethylene plastic on the outermost side by using an extruder to form an insulation layer;

step 4, manufacturing a composite wire core, namely mutually contacting and twisting gradual change extension parts of three groups of power wire cores, and twisting two groups of signal wire cores in gaps at the outer side edges of any two power wire cores, wherein the optical fiber wire cores are twisted in the remaining gaps, so that the optical fiber wire cores and the signal wire cores are tangential to the power wire cores;

step 5, manufacturing a wrapping layer: filling a filling layer among the power wire core, the optical fiber wire core and the signal wire core, and forming a wrapping layer on the outer sides of the power wire core, the optical fiber wire core, the signal wire core and the filling layer by wrapping polyester tapes by using a wrapping machine;

step 6, manufacturing an inner sheath: extruding polyurethane flexible plastic outside the wrapping layer by using an extruder to form the inner sheath;

step 7, manufacturing an outer tensile layer: forming the outer tensile layer by braiding aramid fiber ropes on the outer side of the inner sheath by using a braiding machine;

step 8, manufacturing an outer sheath: and extruding polyurethane wear-resistant plastic outside the outer tensile layer by using an extruder to form the outer sheath.

Compared with the prior art, the invention has the advantages that:

the composite conductor core formed by twisting the conductors with various diameters and the semiconductor reinforcing core is arranged, so that the electric power wire core has stronger axial tensile capacity and wire breakage preventing capacity under the small diameter, the electric power transmission is more stable, meanwhile, the mutually twisted parts of the electric power wire cores are provided with gradual change extension parts, the middle twisting parts of the three groups of electric power wire cores are free from gaps, the radial compressive capacity of the whole cable core is enhanced, the whole cable body is free from additional cable cores, the outer diameter of the cable body is not increased, and the whole cable body is compact and light in weight.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing.

Fig. 1 is a schematic cross-sectional view of a flexible composite web cable according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a flexible composite reel cable according to an embodiment of the present invention.

Fig. 3 is a schematic view of the hierarchical structure of a flexible composite web cable according to an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of the power core of the flexible composite web cable according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a power core and a tensile layer in a flexible composite web cable according to an embodiment of the present invention.

Detailed Description

For a better understanding of the technical content of the present invention, specific examples are set forth below, along with the accompanying drawings.

Because the current reel cable is in order to strengthen at stretch-proofing performance, stranded steel wire, aramid fiber and sheath in the cable, lead to the holistic external diameter of cable to increase, cable body bending property decline, the problem that the duty cycle of conductor declines, for this reason, this application proposes that the structure is compact relatively, and has good tensile, resistance to compression and bending property's photoelectricity composite cable.

Flexible composite reel Cable

As shown in fig. 1 and 2, the first aspect of the present invention proposes a technical solution, a flexible composite reel cable, suitable for use in port hoisting equipment, such as ship loaders, stacker, etc., mainly comprising a power core 1, an optical fiber core 2, a signal core 3, a filling layer 4, a wrapping layer 5, an inner sheath 6, an outer tensile layer 7, and an outer sheath 8.

Power line core

The power wire cores 1 are arranged into three groups and are mutually stranded in a tangent mode, and a group of optical fiber wire cores 2 and two groups of signal wire cores 3 are stranded together at the outer sides of two adjacent power wire cores 1.

In a specific embodiment, the cross section of each power wire core 1 is provided with a convex gradual change extension part 101, and the extension angle of the gradual change extension part 101 is set to be one hundred twenty degrees and is distributed along the length direction of the power wire core 1, so that the joints of the three groups of power wire cores 1 are mutually attached.

Therefore, the middle twisting positions of the three groups of power wire cores 1 are free of gaps, so that the overall radial compressive capacity of the cable core is enhanced, and gaps are formed among the optical fiber wire cores 2, the signal wire cores 3 and the power wire cores 1 which are twisted on the outer sides, so that the cable core has certain flexibility.

Referring to fig. 4, the power core 1 includes an insulating layer 12 and a tensile core 13, wherein the insulating layer 12 and the tensile core 13 are sequentially coated on the outer side of the conductor core 11 from inside to outside, and a plurality of groups of tensile cores 13 which are symmetrical about an axis and parallel to the axis are embedded in the insulating layer 12.

Conductor core

Wherein the conductor core 11 includes a first conductor core 111 and a second conductor core 112 which are stranded in multiple layers from inside to outside, the diameter of the first conductor core 111 is larger than that of the second conductor core 112, and a semiconductor reinforcing core 113 is stranded between the first conductor core 111 and the second conductor core 112.

Specifically, the conductor core 11 includes three or more conductor layers, the first conductor core 111 is provided as one or more layers, and the outermost conductor layer is provided as the second conductor core 112.

Alternatively, the first conductor core 111 and the second conductor core 112 employ copper conductors, copper alloy conductors, aluminum alloy conductors, or a mixed conductor of any two, and the diameter of the first conductor core 111 is set to 1.2 to 5 times the diameter of the second conductor core 112.

In this way, the conductors with different diameters are mixed and twisted, the conductors with larger diameters bear relatively larger tensile force, the situation that partial broken wires occur when the cable core is entirely made of the conductors with small diameters is reduced, the void volume between the conductors is increased, space is provided for the twisted semiconductor reinforced core 113, and meanwhile the conductors are not compressed, so that the conductor core 11 is more flexible and easy to bend.

Further, the semiconductor reinforcing core 113 includes a mixed braided wire of copper wires and aramid wires, wherein the copper wires account for more than 50%.

Specifically, the semiconductor reinforcing core 113 stranded between the conductor cores 11 can maintain electrical connection between the wires through the braided copper wires on one hand, and even distribution of interfacial electric fields of the conductor cores 11, and on the other hand, aramid filaments are evenly arranged in the conductor cores 11, so that tensile capacity of the conductor cores 11 can be enhanced, and axial tensile protection is formed for the conductors.

In this way, the filling of the semiconductor reinforcing core 113 in the conductor core 11 can not only enhance the tensile capacity in the axial direction, but also reduce the sectional occupation area, keep the outer diameter of the cable body almost unchanged, and make the cable body compact under the condition of enhancing the tensile capacity.

In a preferred embodiment, the conductor core 11 is provided with five conductor layers by using annealed pure copper wires to increase flexibility, the conductor core 11 is provided with five conductor layers, and the diameter of the first conductor core 111 is 1.8 times that of the second conductor core 112;

the first layer of conductors consists of a single second conductor core 112, the second layer of conductors comprises six right-to-outside twisted second conductor cores 112, the third layer of conductors comprises eight first conductor cores 111 twisted outside the second layer of conductors, the fourth layer of conductors comprises eight second conductor cores 112 twisted outside the third layer of conductors, the fifth layer of conductors comprises 24 second conductor cores 112 twisted outside the fourth layer of conductors, each layer of conductors is twisted with a semiconductor reinforcing core 113 in a twisted gap for filling the gap, and meanwhile, the interfacial electric field distribution of the conductor cores 11 is uniform, and the section ratio of the conductor cores 11 is more than 90%.

Therefore, under the condition of the conductor cores 11 with the same diameter, the axial tensile capacity is stronger, and the wire breakage condition is not easy to occur to the wire, so that the power transmission is more stable.

In other embodiments, the conductor core 11 is not limited to two-size conductors, but may be formed by twisting two or more-size conductors, with the aim of increasing the cross-sectional area ratio of the conductors.

Insulating layer and tensile core

As shown in fig. 4, the tensile core 13 includes a fiber core 132 made of an aramid fiber rope and a coating layer 131 coated on the outside of the fiber core 132, and the coating layer 131 is a sheath structure formed of polyurethane flexible plastic extruded on the outside of the aramid fiber rope.

Wherein the tensile core 13 is prefabricated before extrusion of the insulating layer 12, and is provided on the circumferential side of the conductor core 11 in a posture parallel to the axis by a drawing machine.

The insulating layer 12 is extruded and coated on the outer side of the conductor core 11 in a three-layer co-extrusion mode, wherein the inner layer of the extrusion coating is made of semiconductive polyolefin, the middle layer is made of crosslinked polyethylene, the outer layer is made of semiconductive polyolefin material to form the insulating layer 12 with the cross section provided with the gradual change extension part 101, and the tensile core 13 is positioned in the middle position of the middle layer in the radial direction of the crosslinked polyethylene.

In this way, the tensile core 13 arranged in the insulating layer 12 can provide stronger tensile performance for the conductor core 11, protect the conductor core 11, and enable the power wire core 1 to bear stronger tensile force in cooperation with the semiconductor reinforced core 113 stranded in the conductor core 11 so as to stably transmit power in the hoisting equipment.

Tensile layer

Further, as shown in fig. 5, an inner tensile layer 9 is provided on the outer side of the power wire core 1, which is sequentially wound around the outer sides of the three power wire cores 1 in a clockwise direction.

Specifically, the number of the inner tensile layers 9 is more than one, and the inner tensile layers 9 are wound on the outer sides of the three groups of the power wire cores 1 in a loose winding manner.

In the preferred embodiment, the number of the inner tensile layers 9 is two, the width of the inner tensile layers 9 is 3-5 cm, the thickness is 1-2 mm, the inner tensile layers 9 are arranged as aramid fiber yarn braiding belts, the aramid fiber yarn braiding belts are sequentially wound on the outer sides of the three power wire cores 1, and under the action of tensile force of a cable, the aramid fiber yarn braiding belts can play roles of radial tightening and axial tightening on the three groups of three power wire cores 1, so that the tensile capacity of the cable core is further enhanced.

In this way, the inner tensile layer 9 is arranged outside the power wire core 1, basically does not occupy the sectional area of the cable, can keep the compactness of the cable, and hardly increases the overall outer diameter.

Filling layer and wrapping layer

Further, the filling layer 4 is filled in gaps among the power wire core 1, the optical fiber wire core 2 and the signal wire core 3, and is wrapped by the wrapping layer 5 to form a composite cable core with a circular cross section.

Specifically, the fire-retardant PP filling rope is adopted as the filling layer 4, so that the overall outer diameter of the cable is more round, the cable has good flexibility, and the bending property of the cable can be maintained.

Inner sheath, outer tensile layer and outer sheath

Further, the inner sheath 6 is extruded on the outer side of the wrapping layer 5, the outer tensile layer 7 is wrapped on the outer side of the inner sheath 6, and the outer sheath 8 is extruded on the outer side of the outer tensile layer 7.

The inner sheath 6 is formed by extruding polyurethane flexible plastic, the outer tensile layer 7 is an aramid fiber woven net, the outer sheath 8 is formed by extruding polyurethane wear-resistant plastic, the polyurethane flexible plastic has good flexibility and elasticity, the inner sheath 6 and the outer sheath 8 can enable the cable body to have excellent flexibility, the surface of the cable body has wear resistance, and the aramid fiber woven net can provide axial tensile performance for the cable body.

In combination with the above embodiment, the cable core stranded by the conductors with various diameters is arranged, the semiconductor reinforced core 113 mixed by the copper wires and the aramid wires is stranded, and the tensile core 13 is arranged in the insulating layer 12, so that the electric power wire core 1 has stronger axial tensile capacity and wire breakage preventing capacity under the condition of not changing the wire diameter, the electric power transmission is more stable, meanwhile, the gradual change extension part 101 is arranged at the mutually stranded part of the electric power wire cores 1, the middle stranded part of the three groups of electric power wire cores 1 is free from gaps, and the radial compressive capacity of the whole cable core is enhanced.

[ method for preparing flexible composite reel Cable ]

The second aspect of the invention provides a technical scheme, a preparation method of a flexible composite reel cable, which comprises the following steps:

step 1, manufacturing a power wire core 1:

1.1 Manufacturing a conductor core 11): selecting a first conductor core 111 with a diameter of D1 and a second conductor core 112 with a diameter of D2, wherein D2 is larger than D1, forming an inner layer core by the first conductor core 111 or the second conductor core 112 in a single core or twisting direction, twisting more than two layers of the first conductor core 111 or the second conductor core 112 or a mixed layer of the first conductor core 111 and the second conductor core 112 on the outer layer of the inner layer core, filling a gap between the first conductor core 111 and the second conductor core 112 with a twisted semiconductor reinforced core 113, so that the section of the conductor core 11 is approximate to a circle, and the first conductor core 111 and the second conductor core 112 with different diameters are mixed and twisted, thereby increasing the amount of gaps between conductors, providing space for the twisted semiconductor reinforced core 113, simultaneously enabling the conductor core 11 to be more flexible and easy to bend without compacting the conductors.

The outer layer of the inner layer core at least comprises a layer of first conductor core 111, the first conductor core 111 with a relatively large diameter can bear relatively larger tensile force, the situation that local broken wires appear when the cable core is entirely made of a small-diameter conductor is reduced, the outermost layer core is formed by twisting the second conductor core 112, the outer diameter of the conductor core 11 is round, an air gap is reduced, and uniform electric fields are facilitated.

Further, the semiconductor reinforcing core 113 comprises a mixed braided wire of copper wires and aramid wires, wherein the copper wires have a ratio of more than 50%, so that the copper wires maintain electrical connection between the wires, the interfacial electric field distribution of the conductor core 11 is uniform, and the aramid wires can strengthen the tensile capacity of the conductor core 11 and form axial tensile protection for the conductor.

1.2 Manufacturing an insulating layer 12): a plurality of tensile cores 13 parallel to the axis are arranged on the periphery of the conductor core 11, and an insulating layer 12 with a gradual extension 101 in section is formed by extruding an inner semiconductive polyolefin, a middle crosslinked polyethylene and an outer semiconductive polyolefin material outside the conductor core 11 and the tensile cores 13 in a three-layer coextrusion mode by using an extruder.

The extending angle of the gradual change extending portion 101 is set to be one hundred twenty degrees, so that the middle twisting position of the three groups of power wire cores 1 is free of gaps, the radial compressive capacity of the whole cable core is enhanced, the tensile core 13 is located at the radial middle position of the insulating layer 12, the tensile core 13 comprises a fiber core 132 made of aramid fiber ropes and a coating layer 131 coated on the outer portion of the fiber core 132, and strong tensile performance can be provided for the conductor core 11.

1.3 Manufacturing a metal shielding layer 14): the copper strips with the wrapping width of 30-35 mm are utilized by the wrapping machine, the average covering rate of the copper strips is not less than 15% of the width of the copper strips, the metal shielding layer 14 of the metal shielding layer is formed, and the inner and outer electromagnetic fields can be shielded to play a role in homogenizing the electric fields.

Step 2, manufacturing an optical fiber core 2: the central position adopts the steel wire to strengthen the core, utilizes the stranding machine from inside to outside to twine multiunit optic fibre core in proper order in the outside of steel wire to outside by inside-to-outside setting up polyethylene inner sheath, waterproofing cream and polyethylene oversheath at the optic fibre core, optic fibre sinle silk 2 is used for transmitting the optical signal.

Step 3, manufacturing a signal wire core 3: the method comprises the steps of stranding a plurality of groups of twisted pairs with insulation into a cable core with a circular section by using a strander, coating a copper braid outside the cable core by using a braiding machine, wrapping copper foil outside the copper braid by using a wrapping machine, extruding polyethylene plastic outside the cable core by using an extruder to form an insulation layer, and transmitting control signals by using a signal wire core 3.

And 4, manufacturing a composite wire core, namely mutually contacting and twisting the gradual change extension parts 101 of the three groups of power wire cores 1, and twisting the two groups of signal wire cores 3 in gaps at the outer side edges of any two power wire cores 1, wherein the optical fiber wire cores 2 are twisted in the remaining gaps, so that the optical fiber wire cores 2 and the signal wire cores 3 are tangential to the power wire cores 1, and the cable body structure is more compact.

Step 5, manufacturing a wrapping layer 5: and a filling layer 4 is filled among the power wire core 1, the optical fiber wire core 2 and the signal wire core 3, and a wrapping layer 5 is formed by wrapping polyester tapes outside the power wire core 1, the optical fiber wire core 2, the signal wire core 3 and the filling layer 4 by using a wrapping machine and is used for fixing the cable core to be in a circular section.

Step 6, manufacturing an inner sheath 6: the inner sheath 6 is formed by extruding polyurethane flexible plastic on the outer side of the wrapping layer 5 by using an extruder, the inner sheath 6 is formed by extruding polyurethane flexible plastic, and the polyurethane flexible plastic has better flexibility and elasticity, so that the cable body has excellent flexibility.

Step 7, manufacturing an outer tensile layer 7: the outer tensile layer 7 is formed by braiding aramid fiber ropes on the outer side of the inner sheath 6 by using a braiding machine, and the outer tensile layer 7 adopts an aramid fiber braided net which can provide axial tensile property for the cable body.

Step 8, manufacturing an outer sheath 8: the outer jacket 8 is formed by extruding polyurethane wear-resistant plastic on the outer side of the outer tensile layer 7 by using an extruder, and the polyurethane flexible plastic has better flexibility and elasticity, so that the cable body has excellent flexibility and the surface of the cable body has wear resistance.

In combination with the above embodiment, through setting up the composite conductor core 11 of multiple diameter conductor and the transposition of semiconductor enhancement core 113, make power core 1 under the minor diameter, have stronger axial tensile ability, prevent broken string ability, make power transmission more stable, the part of the mutual transposition of power core 1 has set up gradual change extension 101 simultaneously, make the intermediate transposition department of three power core 1 of group have not had the space, the holistic radial compressive capacity reinforcing of cable core, and the holistic no additional cable core of cable body, do not increase the cable body external diameter, make the whole compactness of cable body, light in weight.

While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims.

Claims

1. A flexible composite web cable, comprising:

the power line cores (1) are mutually stranded in a pairwise tangent mode, and a group of optical fiber line cores (2) and two groups of signal line cores (3) are stranded at the outer sides of two adjacent power line cores (1);

the filling layer (4) is filled in gaps among the power wire core (1), the optical fiber wire core (2) and the signal wire core (3) and is wrapped by the wrapping layer (5) to form a composite cable core with a circular section;

an inner sheath (6) extruded outside the wrapping layer (5);

an outer tensile layer (7) which is coated on the outer side of the inner sheath (6);

an outer sheath (8) extruded outside the outer tensile layer (7);

the surface wall of each power wire core (1) is provided with a convex gradual change extension part (101) along the axial direction, and the extension angle of the gradual change extension parts (101) is set within a preset range to enable the connection parts of three groups of power wire cores (1) to be mutually attached;

the outside of electric power sinle silk (1) is equipped with along clockwise twine in proper order in interior tensile layer (9) in the outside of three electric power sinle silk (1), interior tensile layer (9) are set up to aramid fiber silk braid strip and constitute.

2. The flexible composite reel cable according to claim 1, wherein the power core (1) comprises a conductor core (11), an insulating layer (12) and a tensile core (13) which are sequentially coated on the outer side of the conductor core (11) from inside to outside, and a plurality of groups of tensile cores (13) which are symmetrical around the axis and parallel to the axis are embedded in the insulating layer (12).

3. A flexible composite web cable according to claim 2, characterized in that the conductor core (11) comprises a first conductor core (111) and a second conductor core (112) stranded in multiple layers from inside to outside, the diameter of the first conductor core (111) being larger than the diameter of the second conductor core (112), a semiconductor reinforcement core (113) being stranded between the first conductor core (111) and the second conductor core (112).

4. A flexible composite web cable according to claim 3, wherein the conductor core (11) comprises more than three conductor layers, the first conductor core (111) being provided in more than one layer and the outermost conductor layer being provided as the second conductor core (112).

5. A flexible composite web cable according to claim 3, wherein the diameter of the first conductor core (111) is set to 1.2-5 times the diameter of the second conductor core (112).

6. A flexible composite web cable according to claim 3, wherein the first conductor core (111) and the second conductor core (112) comprise copper conductors, copper alloy conductors, aluminum alloy conductors or a hybrid conductor of any two.

7. A flexible composite web cable according to claim 3, wherein the semiconductive reinforcement core (113) comprises a hybrid braid of copper wires and aramid wires, wherein the copper wires are present in a ratio of greater than 50%.

8. A flexible composite web cable according to claim 1, characterized in that the inner tensile layer (9) is provided in more than one piece and that the inner tensile layer (9) is wound on the outside of three sets of the power cores (1) in a loose winding manner.

9. A flexible composite web cable according to claim 1, characterized in that the outer tensile layer (7) comprises an aramid fiber woven mesh.

10. The flexible composite reel cable according to claim 1, characterized in that a first conductor core (111) with a diameter D1 and a second conductor core (112) with a diameter D2 are selected, D1 > D2, an inner layer core is formed by the first conductor core (111) or the second conductor core (112) in a single core or twisting direction, more than two layers of the first conductor core (111) or the second conductor core (112) or a mixed layer of the first conductor core (111) and the second conductor core (112) are twisted on the outer layer of the inner layer core, and a twisted semiconductor reinforcing core (113) is filled in a gap between the first conductor core (111) and the second conductor core (112) so that the section of the conductor core (11) is approximately circular;

the inner-layer wire core comprises at least one layer of first conductor core (111), and the outermost-layer wire core is formed by twisting the second conductor core (112);

the semiconductor reinforced core (113) comprises mixed braided wires of copper wires and aramid wires, and the copper wires account for more than 50%.