阅读说明：本技术 一种高性能复合电缆及其制造方法 (High-performance composite cable and manufacturing method thereof ) 是由 任进明 乔德军 于 2021-05-22 设计创作，主要内容包括：本申请涉及一种高性能复合电缆及其制造方法,高性能复合电缆包括从内到外依次设置的缆芯、包带层、屏蔽层、防水层、铠装层以及护套层；防水层由吸潮管环绕组成,吸潮管包括毛细管和毛细管内腔中的高吸水树脂颗粒,毛细管上开设有吸湿孔。其制造方法包括：在导电线芯外挤包防水绝缘层,得到单缆,将多根单缆以及填充绳绞合得到缆芯；在缆芯外表面绕包包带布,形成包带层；再绕包半导体复合带,形成屏蔽层；再绕装吸潮管,形成防水层,再在防水层表面装设铠装层并挤包护套层,得到成品电缆；其中,吸潮管的制造包括：向热塑管内吹注高吸水树脂颗粒,并加热拉伸为毛细管,再开设吸湿孔,冷却定型。本申请的高性能复合电缆具有防潮效果好的优点。(The application relates to a high-performance composite cable and a manufacturing method thereof, wherein the high-performance composite cable comprises a cable core, a belting layer, a shielding layer, a waterproof layer, an armor layer and a sheath layer which are sequentially arranged from inside to outside; the waterproof layer is surrounded by the moisture absorption pipe and is constituteed, and the moisture absorption pipe includes the super absorbent resin granule in capillary and the capillary inner chamber, has seted up the hole of absorbing moisture on the capillary. The manufacturing method comprises the following steps: a waterproof insulating layer is extruded outside the conductive wire core to obtain a single cable, and a plurality of single cables and the filling ropes are twisted to obtain a cable core; wrapping cloth around the outer surface of the cable core to form a wrapping layer; wrapping the semiconductor composite tape to form a shielding layer; winding a moisture absorption pipe to form a waterproof layer, arranging an armor layer on the surface of the waterproof layer and extruding a sheath layer to obtain a finished cable; wherein, the manufacturing of moisture absorption pipe includes: blowing and injecting the super absorbent resin particles into the thermoplastic tube, heating and stretching the super absorbent resin particles into a capillary tube, forming a moisture absorption hole, and cooling and shaping the capillary tube. The high-performance composite cable has the advantage of good moisture-proof effect.)

1. A high performance composite cable characterized in that: the cable comprises a cable core (1), a belting layer (2), a shielding layer (3), a waterproof layer (5), an armor layer (6) and a sheath layer (7) which are arranged from inside to outside in sequence;

the waterproof layer (5) is formed by arranging a plurality of moisture absorption pipes (51) in a surrounding mode, each moisture absorption pipe (51) comprises a capillary tube (511) and super absorbent resin particles (512) filled in the inner cavity of the capillary tube (511), a plurality of moisture absorption holes (5111) are formed in the outer wall of the capillary tube (511), and the moisture absorption holes (5111) are arranged at intervals along the length direction of the capillary tube (511) and are communicated with the inner cavity of the capillary tube (511).

2. The high performance composite cable of claim 1, wherein: the armor layer (6) is composed of steel tape armors.

3. The high performance composite cable of claim 1, wherein: the armor layer (6) is composed of steel wire armor, and the moisture absorption pipe (51) is embedded in a gap formed by adjacent steel wires in the armor layer (6) in an attached mode.

4. The high performance composite cable of claim 3, wherein: the outer diameter of the steel wire of the armor layer (6) is not more than 2 times of the outer diameter of the moisture absorption pipe (51).

5. The high performance composite cable of claim 1, wherein: the capillary tube (511) is provided as a polytetrafluoroethylene tube.

6. The high performance composite cable of claim 1, wherein: an oxygen isolation layer (4) is further arranged between the shielding layer (3) and the waterproof layer (5).

7. The method for manufacturing a high-performance composite cable according to any one of claims 1 to 6, wherein: the method comprises the following steps:

the method comprises the following steps: the method comprises the steps of drawing and annealing conductor rod materials to obtain conductor monofilaments (111), twisting the obtained conductor monofilaments (111) to obtain a conductive wire core, extruding a waterproof insulating layer (112) outside the conductive wire core to obtain a single cable (11), and twisting a plurality of single cables (11) and filling ropes (12) to obtain a cable core (1);

step two: wrapping cloth around the outer surface of the cable core (1) to form a wrapping layer (2) and obtain a first intermediate product;

step three: wrapping a semiconductor composite tape on the surface of the first intermediate product to form a shielding layer (3) to obtain a second intermediate product;

step four: a moisture absorption pipe (51) is wound on the surface of the second intermediate product to form a waterproof layer (5), and an armor layer (6) is arranged on the surface of the waterproof layer (5) to form a third intermediate product;

step five: extruding a sheath layer (7) on the outer surface of the third intermediate to obtain a finished cable;

wherein the manufacturing of the moisture absorption pipe (51) comprises the following steps: blowing and injecting super absorbent resin particles (512) into the thermoplastic tube, then heating and stretching the thermoplastic tube filled with the super absorbent resin particles (512), stretching the thermoplastic tube into a capillary tube (511) with the inner diameter not larger than 1mm, forming a moisture absorption hole (5111) on the obtained capillary tube (511), and cooling and shaping.

8. The method of manufacturing a high performance composite cable according to claim 7, wherein: and the third step of wrapping an oxygen isolating belt on the surface of the shielding layer (3) to form an oxygen isolating layer (4).

9. The high performance composite cable of claim 7, wherein: and in the fourth step, while the moisture absorption pipe (51) is wound on the surface of the second intermediate product, the steel wire is wound on the surface of the wound waterproof layer (5), and the moisture absorption pipe (51) is clamped and fixed through an armor layer (6) formed by winding the steel wire.

Technical Field

The application relates to the field of cables, in particular to a high-performance composite cable and a manufacturing method thereof.

Background

With the rapid development of urbanization and industrialization, whether in daily life or industrial production, the electric cables are developed in the direction of electrification, and therefore, the electric cables are more and more widely used as the basis for electric facilities.

The Chinese invention application with the application number of 201510923802.4 discloses a high-performance cable, which comprises an outer protective layer, an armor layer, an inner protective layer, a shielding layer, a filling layer and a plurality of cable cores, wherein the outer protective layer, the armor layer, the inner protective layer, the shielding layer, the filling layer and the cable cores are sequentially arranged from outside to inside; the cable cores are arranged in a surrounding mode, and the filling layer wraps the cable cores arranged in the surrounding mode; waterproof filling materials are filled between the cable core and the filling layer; the armor layer is longitudinally wrapped on the inner protective layer; the shielding layer is longitudinally wrapped on the filling layer.

In view of the above-mentioned related technologies, the inventor believes that when the cable is used in a humid environment for a long time or the cable is damaged and enters water, the shielding layer is easily corroded by water vapor, the shielding effect is affected, and the defect of poor moisture-proof effect exists.

Disclosure of Invention

In order to improve the moisture-proof effect of the cable, the application provides a high-performance composite cable and a manufacturing method thereof.

In a first aspect, the present application provides a high performance composite cable, which adopts the following technical scheme:

a high-performance composite cable comprises a cable core, a belting layer, a shielding layer, a waterproof layer, an armor layer and a sheath layer which are sequentially arranged from inside to outside;

the waterproof layer is formed by arranging a plurality of moisture absorption pipes in a surrounding mode, each moisture absorption pipe comprises a capillary and super absorbent resin particles filled in the inner cavity of the capillary, a plurality of moisture absorption holes are formed in the outer wall of the capillary, and the moisture absorption holes are arranged at intervals along the length direction of the capillary and are communicated with the inner cavity of the capillary.

Through adopting above-mentioned technical scheme, when the cable uses or the impaired time intaking of cable for a long time in humid environment, steam sees through restrictive coating or restrictive coating damage department infiltration cable inside, and continue inside infiltration through the armor clearance, after reaching the waterproof layer, steam in the air is absorbed in the capillary tube inner chamber under the capillary action of capillary, and absorb the locking by super absorbent resin granule, make keep dry state for a long time within shielding layer and the shielding layer, reduce the possibility that the shielding layer received steam and erode, promote the dampproofing effect of cable, and then improve the safety in utilization of cable.

Optionally, the armor layer is made of steel tape armor.

Through adopting above-mentioned technical scheme, adopt the steel band to form the armor, not only machining efficiency is high, and the armor that forms moreover is water proof effectual, and the water vapour internal erosion resistance is strong, helps reducing the possibility that the shielding layer received steam to corrode.

Optionally, the armor layer is formed by steel wire armor, and the moisture absorption pipe is embedded in a gap formed by adjacent steel wires in the armor layer in an attached mode.

Through adopting above-mentioned technical scheme, the cooperation mode of the moisture absorption pipe and the steel wire of design helps when guaranteeing waterproof layer water-proof effects, reduces the moisture absorption pipe quantity that constitutes the waterproof layer, reduces the cable cost increase volume that improves the humidity resistance and bring, improves the cable price/performance ratio.

Optionally, the outer diameter of the armor layer steel wire is not more than 2 times of the outer diameter of the moisture absorption pipe.

Through adopting above-mentioned technical scheme, restrict armor steel wire external diameter by the moisture absorption pipe external diameter, and then inject the cross fit structure that forms between armor and the waterproof layer, when reducing the moisture absorption pipe quantity, reduce the influence that the moisture absorption pipe quantity reduces shielding layer shielding quality. Particularly, when the outer diameter of the steel wire of the armor layer is less than or equal to 2 times of the outer diameter of the moisture absorption pipe, the moisture absorption pipe embedded in the gap between the adjacent steel wires in the armor layer is difficult to support the armor layer again, so that the armor layer is directly contacted with the shielding layer, and the possibility of mechanical damage of the armor layer to the shielding layer is increased; but also can lead to the adjacent steel wire of armor to be difficult to spacing with the dampproofing pipe chucking that corresponds, dampproofing pipe reduces the shutoff effect in space between the adjacent steel wire of armor promptly, and then has influenced the dampproofing effect of cable.

Optionally, the capillary tube is provided as a polytetrafluoroethylene tube.

By adopting the technical scheme, the characteristics of wide use temperature range and strong acid-base resistance and organic solvent resistance of the polytetrafluoroethylene material are utilized, so that the prepared capillary tube can keep stable form and property in the cable processing and using processes, and the self action is not influenced by external environment change; and polytetrafluoroethylene has and the low characteristics of coefficient of friction for the waterproof layer can also protect the shielding layer as interior sheath, reduces the shielding layer and produces mechanical damage's possibility, helps further promoting cable safe in utilization.

Optionally, an oxygen barrier layer is further disposed between the shielding layer and the waterproof layer.

Through adopting above-mentioned technical scheme, the oxygen layer that separates of design further protects the cable, reduces the cable because of absorbing water the short circuit and the possibility that the fire burns out, promotes cable quality.

In a second aspect, the present application provides a method for manufacturing a high-performance composite cable, which adopts the following technical scheme:

a manufacturing method of a high-performance composite cable comprises the following steps:

the method comprises the following steps: drawing and annealing conductor rods to obtain conductor monofilaments, twisting the obtained conductor monofilaments to obtain a conductive wire core, extruding a waterproof insulating layer outside the conductive wire core to obtain a single cable, and twisting a plurality of single cables and filling ropes to obtain a cable core;

step two: wrapping tape cloth on the outer surface of the cable core to form a wrapping tape layer, and obtaining a first intermediate product;

step three: wrapping a semiconductor composite tape on the surface of the first intermediate product to form a shielding layer, and obtaining a second intermediate product;

step four: winding a moisture absorption pipe on the surface of the second intermediate product to form a waterproof layer, and arranging an armor layer on the surface of the waterproof layer to form a third intermediate product;

step five: extruding and coating a sheath layer on the outer surface of the third intermediate to obtain a finished cable;

wherein, the manufacturing of the moisture absorption pipe comprises the following steps: blowing and injecting high water absorption resin particles into the thermoplastic tube, heating and stretching the thermoplastic tube filled with the high water absorption resin particles, stretching the thermoplastic tube into a capillary tube with the inner diameter not more than 1mm, forming a moisture absorption hole on the obtained capillary tube, and cooling and shaping.

Through adopting above-mentioned technical scheme, the manufacturing approach of the moisture absorption pipe of design, through the thermoplasticity that utilizes the thermoplastic pipe, the heat sink pipe heating that will be filled with super absorbent resin is tensile to form the capillary, is convenient for absorb steam through capillary phenomenon on the one hand, and on the other hand makes the interval increase between the super absorbent resin granule, reserves the inflation space for super absorbent resin, helps super absorbent resin can fully absorb water in the use.

According to the manufacturing method of the high-performance composite cable, the waterproof layer is fixed through the armor layer, so that the waterproof layer and the armor layer can be continuously arranged, the influence of the added waterproof layer on the production efficiency and the production cost of the cable is reduced, and the manufacturing method is suitable for industrial production.

Optionally, the third step further includes wrapping an oxygen-insulating tape around the surface of the shielding layer to form an oxygen-insulating layer.

Through adopting above-mentioned technical scheme, not only can promote cable fire behavior around the oxygen layer that separates of package, can also act as interior sheath, reduce cable core and shielding layer and receive the possibility that mechanical damage and steam corrode, improve the cable quality.

Optionally, in the fourth step, while the moisture absorption pipe is wound on the surface of the second intermediate product, a steel wire is wound on the surface of the finished waterproof layer, and the moisture absorption pipe is clamped and fixed through an armor layer formed by winding the steel wire.

By adopting the technical scheme, the adopted matching installation method of the waterproof layer and the armor layer positions the moisture absorption pipe through the steel wire of the armor layer, is favorable for forming the waterproof layer which is regularly assembled, and improves the manufacturing efficiency and the cabling quality.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the waterproof layer is arranged, so that water vapor is absorbed into the inner cavity of the capillary under the capillary action of the capillary after reaching the waterproof layer and is absorbed and locked by the super absorbent resin particles, the shielding layer and the shielding layer are kept in a dry state for a long time, the possibility that the shielding layer is corroded by the water vapor is reduced, the moisture-proof effect of the cable is improved, and the use safety of the cable is further improved;

2. the designed matching mode of the moisture absorption pipes and the steel wires is beneficial to ensuring the waterproof effect of the waterproof layer, reducing the number of the moisture absorption pipes forming the waterproof layer, reducing the increase of cable cost caused by improving the moisture resistance and improving the cost performance of the cable;

3. the manufacturing approach of the moisture absorption pipe of design, through the thermoplasticity that utilizes the thermoplastic pipe, the heat sink pipe heating stretch that will be filled with super absorbent resin forms the capillary, is convenient for absorb steam through capillary phenomenon on the one hand, and on the other hand makes the interval increase between the super absorbent resin granule, reserves the inflation space for super absorbent resin, helps super absorbent resin can fully absorb water in the use.

Drawings

Fig. 1 is a schematic cross-sectional view of a high-performance composite cable according to example 1 of the present application.

Fig. 2 is a schematic view showing the structure of a moisture absorption tube manufactured in example 1 of the present application.

Fig. 3 is a schematic cross-sectional view of a high-performance composite cable according to example 2 of the present application.

Description of reference numerals: 1. a cable core; 11. a single cable; 111. a conductor monofilament; 112. a waterproof insulating layer; 12. filling a rope; 2. a belting layer; 3. a shielding layer; 4. an oxygen barrier layer; 5. a waterproof layer; 51. a moisture absorption pipe; 511. a capillary tube; 5111. a moisture-absorbing aperture; 512. superabsorbent resin particles; 6. an armor layer; 7. a sheath layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Example 1

The embodiment 1 of the application discloses a high-performance composite cable. Referring to fig. 1, the high-performance composite cable includes a cable core 1, a belting layer 2, a shielding layer 3, an oxygen barrier layer 4, a waterproof layer 5, an armor layer 6 and a sheath layer 7, which are sequentially arranged from inside to outside.

The cable core 1 is formed by twisting three single cables 11 and a plurality of filling ropes 12, the circle centers of the three single cables 11 are located on the same circumference, and the filling ropes 12 are filled in gaps around the three single cables 11; the single cable 11 is composed of a conductor core and a waterproof insulating layer 112 coated outside the conductor core, the conductor core is formed by twisting a plurality of conductor monofilaments 111, and the waterproof insulating layer 112 is obtained by extrusion molding of crosslinked polyethylene. In this embodiment, the conductor monofilament 111 is a copper wire, and the filling rope 12 is a polypropylene mesh filling rope.

The belting layer 2 is formed by wrapping belting cloth, in the embodiment, the belting cloth adopts mica tape, in other embodiments, a rubber coating glass ribbon can be selected, and all the materials capable of buffering and lining the cable core 1 can be used.

The shielding layer 3 is formed by wrapping a semiconductor composite tape, in the embodiment, the semiconductor composite tape is an aluminum plastic composite tape, in other embodiments, a mesh braided wire or a silver-plated copper wrapping tape can be selected, and all materials capable of realizing electromagnetic shielding can be used.

The oxygen insulation layer 4 is formed by wrapping an oxygen insulation tape, in the embodiment, the wrapping tape is made of alkali-free glass fiber ropes, in other embodiments, halogen-free polyethylene tapes or mica tapes can be adopted, and all materials capable of playing a role in fire resistance and oxygen insulation can be used.

The waterproof layer 5 is formed by arranging a plurality of moisture absorption pipes 51 in a surrounding manner, referring to fig. 2, each moisture absorption pipe 51 comprises a capillary 511 and super absorbent resin particles 512 filled in an inner cavity of the capillary 511, a plurality of moisture absorption holes 5111 are formed in the outer wall of the capillary 511, and the moisture absorption holes 5111 are arranged at intervals along the length direction of the capillary 511 and are communicated with the inner cavity of the capillary 511. In this embodiment, the capillary 511 is a polytetrafluoroethylene tube, and the inner diameter of the capillary 511 is 0.7-0.8 mm; the super absorbent resin particles 512 adopt acrylic acid-acrylamide copolymer super absorbent resin particles 512 with the particle size of 180-250 mu m.

The armor layer 6 is formed by wrapping steel belts. The sheath layer 7 is formed by extruding polyvinyl chloride.

The embodiment also discloses a manufacturing method of the high-performance composite cable, which comprises the following steps:

the method comprises the following steps: using a wire drawing annealing machine to draw and anneal a copper rod to obtain copper monofilaments, twisting the obtained copper monofilaments by using a stranding machine to obtain conductive wire cores, using an extruder to extrude and wrap crosslinked polyethylene outside the conductive wire cores to form a waterproof insulating layer 112 to obtain single cables 11, and twisting three single cables 11 and a plurality of filling ropes 12 by using the stranding machine to obtain cable cores 1;

step two: wrapping tape cloth on the outer surface of the cable core 1 by using a wrapping machine to form a tape wrapping layer 2, and obtaining a first intermediate product;

step three: wrapping a semiconductor composite tape on the surface of the first intermediate product by using a wrapping machine to form a shielding layer 3, wrapping an oxygen isolating tape on the surface of the shielding layer 3 by using the wrapping machine to form an oxygen isolating layer 4, and obtaining a second intermediate product;

step four: winding the moisture absorption pipe 51 on the surface of the second intermediate product by using a steel wire armoring machine to form a waterproof layer 5, and wrapping a steel belt on the surface of the waterproof layer 5 by using a steel belt armoring wrapping machine to form an armor layer 6 to obtain a third intermediate;

step five: and extruding polyvinyl chloride on the surface of the third intermediate body by using an extruder to form a sheath layer 7, thus obtaining the finished cable.

The manufacturing of the moisture absorption pipe 51 includes the following steps: introducing gas containing super absorbent resin particles 512 into the polytetrafluoroethylene tube to enable the super absorbent resin particles 512 to be filled into the polytetrafluoroethylene tube, then heating the polytetrafluoroethylene tube filled with the super absorbent resin particles 512 to 320 ℃ to enable the polytetrafluoroethylene tube to be softened, stretching the polytetrafluoroethylene tube to stretch the polytetrafluoroethylene tube into a capillary tube 511 with the inner diameter of 0.7-0.8mm, and clamping the super absorbent resin particles 512 in the capillary tube 511 at intervals; then, moisture absorption holes 5111 are drilled in the obtained capillary 511, and the capillary 511 is cooled by an air cooler, so that the capillary 511 is shaped.

Example 2

The embodiment 2 of the present application discloses a high performance composite cable, and referring to fig. 3, the difference from the high performance composite cable in embodiment 1 is that: armor 6 comprises the steel wire armor, and moisture absorption pipe 51 keeps away from one side of oxygen barrier and inlays the adjacent steel wire of establishing in armor 6 and paste the clearance of formation, and 6 steel wire external diameters of armor are not more than 2 times of moisture absorption pipe 51 external diameter. In this embodiment, the outer diameter of the steel wire of the armor layer 6 is 2mm, the outer diameter of the moisture absorption pipe 51 is 1.1mm, and the wall thickness of the moisture absorption pipe 51 is 0.25mm

This example 2 also discloses a manufacturing method of the high performance composite cable in this example, which is different from the manufacturing method of the high performance composite cable in example 1 in that: the fourth step comprises the following steps: and (3) winding the moisture absorption pipe 51 on the surface of the second intermediate product by using a steel wire armoring machine to form a waterproof layer 5, simultaneously winding steel wires on the surface of the waterproof layer 5 by using the steel wire armoring machine, and clamping and fixing the moisture absorption pipe 51 through an armor layer 6 formed by steel wire armoring to obtain a third intermediate.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.