CN111667943A - A kind of photoelectric control composite shore power cable control core for ship and preparation method thereof - Google Patents

Abstract

The invention provides a control wire core of an optoelectronic control composite shore power cable for ships, comprising an inner core structure and an outer shell structure, wherein the inner core structure includes a plurality of conductors, a tensile layer arranged in each conductor and a The outer insulating layer; the outer jacket structure from the inside to the outside is the first anti-impact layer, the first shielding layer, the second anti-impact layer, the second shielding layer, the third anti-impact layer, the third shielding layer and the cladding layer; A filler layer is arranged between the inner core structure and the outer jacket structure of the cable. By designing a new type of control wire core conductor, the present invention can effectively avoid the broken core of the control wire core during the frequent bending and moving process, and the power wire core will not be damaged after the broken core.

Description

A kind of photoelectric control composite shore power cable control core for ship and preparation method thereof

technical field

The invention relates to the technical field of power distribution cables, in particular to a control wire core of a marine photoelectric control composite shore power cable and a preparation method thereof.

Background technique

Large ships usually use heavy oil or diesel to generate electricity when they arrive at the port to meet the electricity demand of ships when they are berthing. Auxiliary engines burn a lot of oil and discharge a lot of waste gas when working, and at the same time, they generate noise pollution 24 hours a day. In line with the environmental protection requirements of "low carbon emission reduction", the use of ship access to shore power enables ships to no longer rely on auxiliary engines to generate electricity during docking, but to use the dock shore power system to start supplying power to docked ships instead of auxiliary engines for power generation. , The power connection of the ship's photoelectric control composite shore power cable is repeatedly and frequently retracted, wound, dragged, and impacted during use. , the wire core is easily twisted and broken, and the local temperature at the twisted and broken core of the wire core is too high, causing the breakdown of the main wire core.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome and supplement the deficiencies in the prior art, and to provide a control wire core of a photoelectric control composite shore power cable for ships and a preparation method thereof, so that the wire core can be repeatedly and frequently retracted, wound, When used by dragging and impacting, the control wire core will not be twisted or broken, and the main wire core will not be broken down when twisted or broken. The technical scheme of the present invention is:

A control wire core of a marine photoelectric control composite shore power cable, which includes an inner core structure and an outer shell structure, the inner core structure includes a plurality of conductors, a tensile layer arranged in each of the conductors, and a an insulating layer outside each of said conductors;

The outer jacket structure is, from inside to outside, a first anti-impact layer, a first shielding layer, a second anti-impact layer, a second shielding layer, a third anti-impact layer, a third shielding layer and a cladding layer in sequence;

A filling layer is arranged between the inner core structure and the outer jacket structure of the cable.

Preferably, in the control wire core of the ship's photoelectric control composite shore power cable, wherein: the plurality of conductors enclose a circle in the cross section of the inner core structure.

Preferably, in the control core of the marine photoelectric control composite shore power cable, the material of the tensile layer is para-aramid filament, and the material of the insulating layer is EPDM.

Preferably, in the control core of the ship's photoelectric control composite shore power cable, wherein: the first impact-resistant layer, the second impact-resistant layer, and the third impact-resistant layer are made of aramid chopped fibers, The first shielding layer, the second shielding layer, and the third shielding layer are made of graphene, and the coating layer is made of neoprene.

Preferably, in the control wire core of the marine photoelectric control composite shore power cable, wherein: each of the conductors includes a first wire core and a second wire core disposed outside the first wire core, the first wire core The core is woven from 16 bundles of first stranded wires, each bundle of which includes 5 tinned copper wires; the second core is woven from 16 bundles of second stranded wires, and each bundle of second stranded wires includes 6 tinned copper wires; the diameter of the cross section of each of the tinned copper wires is set to 0.1-0.2 mm.

A method for preparing a control core of a photoelectric control composite shore power cable for ships, comprising the following steps:

1) Braid the conductor through the braiding machine outside the tensile layer, and extrude the insulating layer outside the conductor, and then add the multiple conductors covered with the insulating layer to the filler to form a cable to form an inner core structure;

2) Weaving the first impact-resistant layer outside the inner core structure through a braiding machine, and passing the braided first impact-resistant layer through a coating device at a linear speed of 0.5-1.5 m/min to coat the first shielding layer;

3) Weaving the second impact-resistant layer outside the first shielding layer through a braiding machine, and passing the braided second impact-resistant layer through the coating device at a linear speed of 0.5-1.5 m/min to coat the second shielding layer;

4) Weaving the third impact-resistant layer outside the second shielding layer through a braiding machine, and passing the braided third impact-resistant layer through the coating device at a linear speed of 0.5-1.5 m/min to coat the third shielding layer;

5) The third shielding layer is extruded and wrapped with a cladding layer to obtain the control core of the ship's photoelectric control composite shore power cable.

Preferably, in the method for preparing the control wire core of the photoelectric control composite shore power cable for ships, wherein: the step 1) the conductor includes a first wire core and a second wire core, and the weaving density of the first wire core is controlled to be 90 -92%, the braiding angle is 45-55°, and then the second core is braided outside the first core, the braiding density of the second core is controlled at 80-82%, and the braiding angle is 55-60°.

Preferably, in the method for preparing the control wire core of the photoelectric control composite shore power cable for ships, wherein: the material of the tensile layer is para-aramid filament, and the material of the insulating layer is ternary ethylene Propylene rubber.

Preferably, in the preparation method of the control core of the ship photoelectric control composite shore power cable, wherein: the first impact-resistant layer, the second impact-resistant layer, and the third impact-resistant layer are made of short aramid fibers Cut fibers; the material of the first shielding layer, the second shielding layer and the third shielding layer is graphene, and the thickness of each layer is 0.1-0.25 mm; the material of the coating layer is neoprene.

Preferably, in the method for preparing the control core of the composite shore power cable with photoelectric control for ships, the braiding density of the first impact-resistant layer is controlled at 80-82%, and the braiding angle is 55-60°; The weave density of the second impact-resistant layer is controlled at 88-90%, and the weave angle is 55-60°; the weave density of the third impact-resistant layer is controlled at 98-100%, and the weave angle is 35-40°.

Advantages of the present invention:

(1) The present invention can effectively avoid core breakage of the control wire core during frequent bending and movement by designing a new type of control wire core conductor, and the power wire core will not be damaged after the broken core.

(2) The control core of the photoelectric control composite shore power cable for ships of the present invention includes an inner core structure and an outer shell structure. The inner core structure includes a plurality of conductors, and each conductor is provided with a tensile layer. After the conductors are woven, The torsion resistance and tensile performance are significantly improved; the outer jacket structure is sequentially composed of the first impact-resistant layer, the first shielding layer, the second impact-resistant layer, the second shielding layer, the third impact-resistant layer, the third shielding layer and the The covering layer and the three-layer impact-resistant layer are made of para-aramid chopped fibers, which can effectively resist external impact. The conductor is wrapped in it, and there will be no broken wire to hurt the power core, which will cause the breakdown of the power core. By setting three layers of shielding layers, it can effectively replace the braided shield of tinned copper wire, so that the braided para-aramid chopped fiber can be braided. It can not only play tensile and impact resistance, but also has better shielding effect.

Description of drawings

FIG. 1 is a schematic structural diagram of the control core of the marine photoelectric control composite shore power cable according to the present invention.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments.

Example 1:

As shown in FIG. 1 , a control core of a marine photoelectric control composite shore power cable includes an inner core structure and an outer shell structure, and the inner core structure includes a plurality of conductors 2 , which are arranged on each of the conductors 2 . a tensile layer 1 inside and an insulating layer 3 arranged outside each of said conductors;

The outer jacket structure is, from inside to outside, a first impact-resistant layer 4, a first shielding layer 5, a second impact-resistant layer 6, a second shielding layer 7, a third impact-resistant layer 8, a third shielding layer 9 and a package. cladding 10;

A filling layer 11 is arranged between the inner core structure and the outer jacket structure of the cable.

The plurality of conductors 2 enclose a circle in the cross section of the inner core structure; the material of the tensile layer is para-aramid filament, the material of the insulating layer is EPDM; The impact layer, the second impact resistance layer and the third impact resistance layer are made of aramid chopped fibers, the first shielding layer, the second shielding layer and the third shielding layer are made of graphene, and the coating layer is made of graphene. The material is neoprene; each of the conductors 2 includes a first wire core and a second wire core arranged outside the first wire core, the first wire core is woven from 16 bundles of first stranded wires, each The bundle of first stranded wires includes 5 tinned copper wires; the second core is woven from 16 bundles of second stranded wires, and each bundle of second stranded wires includes 6 tinned copper wires; each of the tinned copper wires The diameter of the cross section of the wire is set to 0.1-0.2 mm.

Example 2:

A method for preparing a control core of a photoelectric control composite shore power cable for ships, comprising the following steps:

1) Fill 5 strands of 2000dtex para-aramid filaments as a tensile layer, braid the conductors through a braiding machine outside the tensile layer, and extrude an insulating layer outside the conductors, and then add fillers to the three conductors to form a cable Inner core structure, the cabling pitch ratio is controlled within 6 times;

2) Weaving the first impact-resistant layer through a braiding machine outside the inner core structure, passing the woven first impact-resistant layer through a graphene coating device at a linear speed of 0.5-1.5m/min, and coating 0.1-0.25mm the first shielding layer;

3) Weaving the second impact-resistant layer through the braiding machine outside the first shielding layer, passing the braided second impact-resistant layer through the graphene coating device at a linear speed of 0.5-1.5 m/min, and coating 0.1-0.25 mm second shielding layer;

4) Weaving the third impact-resistant layer through the braiding machine outside the second shielding layer, passing the braided third impact-resistant layer through the graphene coating device at a linear speed of 0.5-1.5 m/min, and coating 0.1-0.25 mm third shielding layer;

5) The third shielding layer is extruded and wrapped with a cladding layer to obtain the control core of the ship's photoelectric control composite shore power cable.

Step 1) The conductor includes a first wire core and a second wire core, the first wire core is woven with a 16-spindle braiding machine, and each ingot is 5 tinned copper wires of 0.15 mm, and the weaving density of the first wire core is controlled to be 90- 92%, the braiding angle is 45-55°, and then the second wire core is braided outside the first wire core. The second wire core is also braided by a 16-spindle braiding machine, with 6 tinned copper wires of 0.15mm per spindle to control the second wire. The core weave density is 80-82%, and the weave angle is 55-60°.

The material of the tensile layer is para-aramid filament, and the material of the insulating layer is EPDM rubber.

The performance index of para-aramid filament is shown in Table 1:

Table 1

After the control core conductor is braided, the torsion resistance and tensile strength are significantly improved. The performance comparison of the control core conductor is shown in Table 2:

Table 2

After repeated tests of the prototype, it was finally determined that the para-aramid filament was used for filling, and the outer layer was braided twice as a control core conductor, which had the best tensile and torsional properties, and had a lighter unit weight.

The first impact-resistant layer, the second impact-resistant layer, and the third impact-resistant layer are made of aramid chopped fibers; the first shielding layer, the second shielding layer, and the third shielding layer are made of graphene. The thickness of each layer is 0.1-0.25 mm; the material of the coating layer is neoprene.

After the control core is cabled, three layers of para-aramid chopped fibers are braided. The first layer is braided by a 16-spindle braiding machine. Each spindle is 1 strand of 1000dtex para-aramid chopped fibers, and the weaving density is controlled at 80-82%. , the braiding angle is 55-60°, the second layer is braided by a 16-spindle braiding machine, each spindle is 1 strand of 1000dtex para-aramid chopped fiber, the braiding density is controlled at 88-90%, the braiding angle is 55-60°, the first The three layers are braided by a 16-spindle braiding machine. Each spindle has 2 strands of 1000dtex para-aramid chopped fibers. The weaving density is controlled at 98-100%, and the braiding angle is 35-40°. The properties of the para-aramid chopped fibers are shown in the table below. 3:

table 3:

The use of para-aramid chopped strands with higher strength can effectively improve the overall breaking force of the control core after cabling, and the crimp recovery rate of para-aramid chopped strands is high. When the control core is subjected to an external impact force When the control core is broken, the three layers of para-aramid chopped fibers can effectively cover the conductor of the control core without any The broken wire hurts the power core, resulting in the breakdown of the power core.

Each layer of para-aramid chopped fibers is woven and coated with a layer of graphene, and the woven control core is transferred to a graphene coating device of 1000-2000 rpm at a linear speed of 0.5-1.5m/min. , control the thickness of graphene to be controlled between 0.1-0.25mm, the para-aramid chopped fiber coating graphene can effectively replace the tinned copper wire braided shield, the para-aramid chopped fiber braiding can not only play a tensile strength , impact resistance, and the shielding effect is better, the first impact resistance layer, the first shielding layer, the second impact resistance layer, the second shielding layer, the third impact resistance layer and the third shielding layer are arranged outside the inner core structure. The performance is shown in Table 4:

Table 4:

The third shielding layer is extruded with a layer of neoprene rubber with excellent performance to coat the graphene material. After coating, it is frequently bent and moved, and the graphene material does not fall off. The shielding effect can be excellent for a long time. The overall tensile strength of the wire core The strength and impact resistance are shown in Table 5:

table 5:

It can be seen from Table 5 that the core breaking resistance and tensile strength of the core are significantly improved compared with the ordinary control core, indicating that the control core of the ship photoelectric control composite shore power cable can effectively avoid the control wire The core is broken during frequent bending and moving, and the power wire core will not be damaged after the core is broken.

Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent substitutions without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a naval vessel is with compound shore power cable control sinle silk of photoelectric control which characterized in that: the cable comprises an inner core structure and an outer sleeve structure, wherein the inner core structure comprises a plurality of conductors, a tensile layer arranged in each conductor and an insulating layer arranged outside each conductor;

the outer sleeve structure sequentially comprises a first impact resistant layer, a first shielding layer, a second impact resistant layer, a second shielding layer, a third impact resistant layer, a third shielding layer and a coating layer from inside to outside;

and a filling layer is arranged between the cable inner core structure and the outer sleeve structure.

2. The marine photoelectric-controlled composite shore power cable control core of claim 1, wherein: the plurality of conductors enclose a circle in the cross section of the inner core structure.

3. The marine photoelectric-controlled composite shore power cable control core of claim 1, wherein: the tensile layer is made of para-aramid filaments, and the insulating layer is made of ethylene propylene diene monomer.

4. The marine photoelectric-controlled composite shore power cable control core of claim 1, wherein: the material of first shock resistance layer, second anti-impact layer, third shock resistance layer is aramid chopped fiber, the material of first shielding layer, second shielding layer, third shielding layer is graphite alkene, the material of coating is chloroprene rubber.

5. The marine photoelectric-controlled composite shore power cable control core of claim 1, wherein: each conductor comprises a first wire core and a second wire core arranged outside the first wire core, the first wire core is formed by weaving 16 first twisted wires, and each first twisted wire comprises 5 tinned copper wires; the second wire core is formed by weaving 16 second stranded wires, each second stranded wire comprises 6 tinned copper wires, and the diameter of the cross section of each tinned copper wire is set to be 0.1-0.2 mm.

6. A preparation method of a photoelectric control composite shore power cable control wire core for ships is characterized by comprising the following steps: the method comprises the following steps:

1) weaving a conductor outside the tensile layer by a weaving machine, extruding an insulating layer outside the conductor, and then adding a plurality of conductors coated with the insulating layer into a filler to form an inner core structure;

2) weaving a first impact-resistant layer outside the inner core structure by a weaving machine, and coating a first shielding layer on the woven first impact-resistant layer by a coating device at a linear speed of 0.5-1.5 m/min;

3) weaving a second anti-impact layer outside the first shielding layer by a weaving machine, and coating the second shielding layer on the woven second anti-impact layer by a coating device at the linear speed of 0.5-1.5 m/min;

4) weaving a third impact-resistant layer outside the second shielding layer by a weaving machine, and coating the third shielding layer on the woven third impact-resistant layer by a coating device at the linear speed of 0.5-1.5 m/min;

5) and extruding and coating a coating layer outside the third shielding layer to obtain the photoelectric control composite shore power cable control wire core for the ship.

7. The method for preparing the photoelectric control composite shore power cable control wire core for the ship according to claim 6, wherein the method comprises the following steps: the conductor in the step 1) comprises a first wire core and a second wire core, the weaving density of the first wire core is controlled to be 90-92%, the weaving angle is 45-55 degrees, then the second wire core is woven outside the first wire core, the weaving density of the second wire core is controlled to be 80-82%, and the weaving angle is 55-60 degrees.

8. The method for preparing the photoelectric control composite shore power cable control wire core for the ship according to claim 6, wherein the method comprises the following steps: the tensile layer is made of para-aramid filaments, and the insulating layer is made of ethylene propylene diene monomer.

9. The method for preparing the photoelectric control composite shore power cable control wire core for the ship according to claim 6, wherein the method comprises the following steps: the first impact-resistant layer, the second impact-resistant layer and the third impact-resistant layer are made of aramid chopped fibers; the first shielding layer, the second shielding layer and the third shielding layer are made of graphene, and the thickness of each layer is 0.1-0.25 mm; the coating layer is made of chloroprene rubber.

10. The method for preparing the photoelectric control composite shore power cable control wire core for the ship according to claim 6, wherein the method comprises the following steps: the weaving density of the first impact-resistant layer is controlled to be 80-82%, and the weaving angle is 55-60 degrees; the weaving density of the second anti-impact layer is controlled to be 88-90%, and the weaving angle is 55-60 degrees; the knitting density of the third impact-resistant layer is controlled to be 98-100%, and the knitting angle is 35-40 degrees.

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