阅读说明：本技术 一种动态调节的多芯光纤复合自悬浮电缆 (Dynamically-adjusted multi-core optical fiber composite self-suspension cable ) 是由 李金堂 刘焕新 王玲红 叶金龙 黄金坊 于 2020-03-16 设计创作，主要内容包括：本发明涉及水下电缆技术领域,具体涉及一种动态调节的多芯光纤复合自悬浮电缆,包括若干个包覆有绝缘层的导电芯,若干个导电芯外用抗拉承力元件包覆填充形成主芯,主芯内的抗拉承力元件还布设有光单元和控制电缆,主芯外依次包覆双面阻水带,双面阻水带外纵包铝塑复合带并挤制中密度聚乙烯防水套,中密度聚乙烯防水套外沿圆周分布若干个弹性空气管,若干个弹性空气管由弹性体外护套包覆,若干个弹性空气管一端封闭,另一端通过电磁阀与气泵连接。本发明的实质性效果是：弹性空气管可以随意充入空气和吸出空气,从而随时动态的调整电缆的浮力,水下作业设备间的动力传输、信号传输或信号控制连接电缆,使用方便。(The invention relates to the technical field of underwater cables, in particular to a dynamically-adjusted multi-core optical fiber composite self-suspending cable which comprises a plurality of conductive cores coated with insulating layers, wherein the plurality of conductive cores are coated and filled with a tensile force-bearing element to form a main core, an optical unit and a control cable are distributed on the tensile force-bearing element in the main core, a double-sided water-blocking tape is sequentially coated outside the main core, the double-sided water-blocking tape is longitudinally coated with an aluminum-plastic composite tape and extruded to form a medium-density polyethylene waterproof jacket, a plurality of elastic air pipes are distributed on the outer circumference of the medium-density polyethylene waterproof jacket, the plurality of elastic air pipes are coated by an elastic outer jacket, one ends of the plurality of elastic air pipes are sealed, and the other ends. The substantial effects of the invention are as follows: the elastic air pipe can be filled with air and sucked out of the air at will, so that the buoyancy of the cable can be dynamically adjusted at any time, the cable is connected with the underwater operation equipment in a power transmission, signal transmission or signal control mode, and the use is convenient.)

1. A dynamically adjusted multi-core optical fiber composite self-suspension cable is characterized in that,

the light-resistant cable comprises a plurality of conductive cores coated with insulating layers, wherein the plurality of conductive cores are coated and filled with a tensile force-bearing element to form a main core, an optical unit and a control cable are further distributed on the tensile force-bearing element in the main core, the main core is sequentially coated with a double-sided water-blocking tape, the double-sided water-blocking tape is longitudinally coated with an aluminum-plastic composite tape and extrudes a medium-density polyethylene waterproof jacket, a plurality of elastic air pipes are distributed on the circumference of the medium-density polyethylene waterproof jacket, the plurality of elastic air pipes are coated by an elastomer outer sheath, one ends of the plurality of elastic air pipes are sealed, and the other ends of the.

2. The dynamically-tuned multi-core fiber composite self-suspending cable of claim 1,

the conductive core is formed by stranding and pressing a plurality of strands of soft copper wires.

3. The dynamically-tuned multi-core fiber composite self-suspending cable according to claim 1 or 2,

the insulating layer is made of flexible polyvinyl chloride insulating material through extrusion.

4. The dynamically-tuned multi-core fiber composite self-suspending cable according to claim 1 or 2,

the tensile force-bearing element is filled with Kevlar tensile fibers.

5. The dynamically-tuned multi-core fiber composite self-suspending cable according to claim 1 or 2,

the optical unit is used for underwater communication, and the control cable is used for controlling the air pump and the electromagnetic valve.

6. The dynamically-tuned multi-core fiber composite self-suspending cable according to claim 1 or 2,

the conductive core, the optical unit and the control cable are bundled by a double-sided water-blocking tape after being cabled.

7. The dynamically-tuned multi-core fiber composite self-suspending cable according to claim 1 or 2,

the gaps among the plurality of elastic air tubes are filled with water-blocking ointment.

8. The dynamically-tuned multi-core fiber composite self-suspending cable according to claim 1 or 2,

be equipped with the rib in the elastic air pipe, the rib both ends bond with the inner wall of elastic air pipe, the elastic air pipe is in the waterproof cover bonding of medium density polyethylene with the waterproof cover butt of medium density polyethylene, and the rib has the contained angle with the radial of main core when the elastic air pipe is full of the air.

9. The dynamically-tuned multi-core fiber composite self-suspending cable of claim 8,

all be equipped with the entity rubber stick between the elastic air pipe, entity rubber stick one end and the waterproof cover bonding of medium density polyethylene, the other end and elastomer oversheath butt, entity rubber stick middle part expand and with the elastic air pipe outer wall butt of both sides.

Technical Field

The invention relates to the technical field of underwater cables, in particular to a dynamically-adjusted multi-core optical fiber composite self-suspending cable.

Background

Due to market demands, customers need a power transmission cable capable of being suspended on the water surface or in water, the power transmission voltage is generally 220V or 380V, the dead weight of the cable is large, so that a common cable sinks in water, inconvenience is brought to construction, water suspension equipment and underwater use, particularly in a water area with large water depth, the underwater condition is complex, the cost and the danger of construction or temporary operation are increased, the common floating cable is applied to cable insulation by adopting an insulation foam material, the buoyancy of the cable in water is larger than the dead weight, the sinking of the cable is avoided, but the buoyancy cannot be adjusted at will, and the construction is still inconvenient.

For example, in chinese patent CN200990259Y, published 2007, 12.12.2007, a buoyant cable is composed of an outer sheath and a cable core, wherein the cable core is a control signal line, the outer sheath is a foam layer, and a waterproof layer is disposed between the foam layer and the control signal line, and the waterproof layer is tightly wrapped on the outer layer of the control signal line. Although the self-weight floating underwater construction device can overcome the self-weight floating on the water surface, the device is not suitable for equipment needing underwater construction, and the problem that the depth of the underwater construction equipment is inconvenient to adjust cannot be solved.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the technical problem of lack of cable capable of adjusting buoyancy under water at present. The utility model provides a multicore optic fibre composite self-suspension cable of dynamic adjustment, this cable can freely adjust buoyancy size, when making the depth adjustment of underwater construction equipment, does not receive the tired of cable.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a dynamically-adjusted multi-core optical fiber composite self-suspending cable comprises a plurality of conductive cores coated with insulating layers, wherein the plurality of conductive cores are coated and filled with tensile force-bearing elements to form a main core, optical units and control cables are further distributed on the tensile force-bearing elements in the main core, the main core is sequentially coated with double-sided water-blocking tapes, the double-sided water-blocking tapes are longitudinally coated with aluminum-plastic composite tapes and extrude a medium-density polyethylene waterproof jacket, a plurality of elastic air pipes are distributed on the circumference of the medium-density polyethylene waterproof jacket, the elastic air pipes are coated with an elastic outer sheath, one end of each elastic air pipe is sealed, and the other end of each elastic air pipe is connected with an air pump through an electromagnetic valve. The elastic air pipe can be inflated and sucked out of air at will, the elastic outer sheath can expand along with the air sucked by the air pipe and retract along with the air sucked out, so that the buoyancy of the cable can be dynamically adjusted at any time, the medium-density polyethylene plastic sleeve has the advantages of high strength, water resistance and good insulativity, the power cable, the optical unit and the control cable are combined together to form a composite cable, and the composite cable is used for connecting cables for power transmission, signal transmission or signal control among underwater operation equipment and is convenient to use.

Preferably, the conductive core is formed by twisting and pressing a plurality of strands of soft copper wires.

Preferably, the insulating layer is extruded from flexible polyvinyl chloride insulation.

Preferably, the tensile force-bearing element is filled with Kevlar tensile fibers. Kevlar tensile fiber is used as a tensile force bearing element of the cable and is filled in a cable gap, and the tensile strength of the cable can be customized according to the requirement.

Preferably, the light unit is used for underwater communication, and the control cable is used for controlling the air pump and the electromagnetic valve. The power cable, the optical unit and the control cable are combined together to form the composite cable which is a power transmission, signal transmission or signal control connecting cable among underwater operation equipment and is convenient to use.

Preferably, the conductive core, the optical unit and the control cable are bundled by a double-sided water-blocking tape after cabling. Can play a role of longitudinal water resistance.

Preferably, the gaps among the plurality of elastic air tubes are filled with water-blocking ointment. And a water-blocking ointment is also arranged in the insulating sheath, so that the longitudinal waterproof capability is improved.

Preferably, a rib is arranged in the elastic air pipe, two ends of the rib are bonded with the inner wall of the elastic air pipe, the elastic air pipe is in bonding with the medium-density polyethylene waterproof sleeve in an abutting mode, and an included angle is formed between the rib and the main core in the radial direction when the elastic air pipe is full of air. The rib can be when the elastic air pipe begins to deflate by being full of the air promptly, and the retraction direction of restriction elastic air pipe wall avoids the elastic air pipe to distribute the confusion, can assist when the elastic air pipe is full of the air simultaneously and bear certain water pressure, reduces the cable and receives the water pressure difference at different positions, the unbalanced influence of buoyancy that leads to.

Preferably, all be equipped with the entity rubber stick between the elastic air pipe, entity rubber stick one end and the waterproof cover bonding of medium density polyethylene, the other end and elastomer oversheath butt, entity rubber stick middle part is expanded and with the elastic air pipe outer wall butt of both sides. When the elastic air pipe is full of air, the solid rubber rod basically radially along the main core, can assist and bear certain water pressure, and reduces the influence of unbalanced buoyancy caused by different water pressures applied to different positions of the cable.

The substantial effects of the invention are as follows: the elastic air pipe can be inflated and sucked out of air at will, the elastic outer sheath can expand along with the air sucked by the air pipe and retract along with the air sucked out, so that the buoyancy of the cable can be dynamically adjusted at any time, the medium-density polyethylene plastic sleeve has the advantages of high strength, good water resistance and good insulativity, the water-blocking ointment is arranged in the insulating sheath to improve the longitudinal waterproof capacity, the power cable, the optical unit and the control cable are combined together to form the composite cable, and the composite cable is used for connecting cables for power transmission, signal transmission or signal control among underwater operation equipment and is convenient to use.

Drawings

Fig. 1 is a schematic structural diagram of a composite self-suspending cable according to an embodiment.

Fig. 2 is a schematic view of the composite self-suspending cable according to the embodiment when the elastic air tube is full of air.

Fig. 3 is a schematic structural diagram of a composite self-suspending cable according to the second embodiment.

FIG. 4 is a schematic view of the composite self-suspending cable according to the second embodiment when the elastic air tube is full of air.

Wherein: 1. the cable comprises a conductive core, 2 parts of an insulating layer, 3 parts of a tensile force-bearing element, 4 parts of an optical unit, 5 parts of a double-sided water-blocking tape, 6 parts of an aluminum-plastic composite tape, 7 parts of a medium-density polyethylene waterproof sleeve, 8 parts of an elastic air pipe, 9 parts of water-blocking ointment, 10 parts of an elastomer outer sheath, 11 parts of a control cable, 12 parts of ribs, 13 parts of a solid rubber rod.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.