CN110993176B

CN110993176B - Reel cable for shore power supply

Info

Publication number: CN110993176B
Application number: CN201911111050.6A
Authority: CN
Inventors: 张宇航; 申可; 郭学文
Original assignee: Anhui Shangwei Cable Co ltd
Current assignee: Anhui Shangwei Cable Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2021-01-05
Anticipated expiration: 2039-11-14
Also published as: CN110993176A

Abstract

The invention relates to a reel cable for shore power supply, which comprises a cable core and a wrapping tape extruded on the outer surface of the cable core, wherein a metal isolation layer is sleeved outside the wrapping tape, an outer sheath is arranged outside the metal isolation layer, and a filler is arranged between the metal isolation layer and the outer sheath; the metal isolation layer is provided with a plurality of bamboo joint type isolation parts which are arranged at equal intervals, and when the metal isolation layer is subjected to direct axial extrusion force, one bamboo joint type isolation part which is most adjacent to the axial extrusion force can be broken in an outward bulging mode so as to form a slit outwards towards the outer sheath. According to the invention, the metal isolation layer is additionally arranged, and the bamboo joint type isolation parts are formed on the metal isolation layer, so that a whole ring of gaps at corresponding positions can be broken in an outwards bulging mode according to actual requirements to form a neat cutting seam outwards towards an outer sheath, a vice or other hard cutting modes are not required, and deeper damage to a reel cable is avoided.

Description

Reel cable for shore power supply

Technical Field

The invention relates to the technical field of cables, in particular to a reel cable for shore power supply.

Background

The coastline of China is one of the longest countries in the coastline of the world, and the rapid economic development of various large port cities is realized along with the development of the coastal cities from the last 70 th century. The shore power technology is a technology which is much concerned in recent years in port and navigation circles at home and abroad, namely when a ship stops at a wharf, a diesel generator of the ship is stopped, and power is supplied by a power grid on the wharf land, so that the atmosphere and noise pollution in the port city and the vicinity of the port city can be greatly reduced by using the shore power. In the shore power supply technology, a reel cable is one of the main components, in the daily installation, use or maintenance process, the situations of wiring and the like are frequently encountered, especially when the requirements on the aesthetic measure and safety of the wiring position are higher, the traditional mode of directly adopting the notches of a vice or a pair of scissors cannot be taken, because the proficiency is required, the thicknesses of the sheath layers of different reel cables are different, once too much force is applied, the internal cable is cut off, a new joint position needs to be selected again, and the notch regularity is poor, so that the aesthetic measure and safety of the wiring position are easily influenced. Thus, an improved design can be made from the reel cable structure itself to facilitate later wiring processes.

Disclosure of Invention

In order to solve the technical problem, the invention provides a reel cable for shore power supply.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

a reel cable for shore power supply comprises a cable core and a wrapping tape extruded on the outer surface of the cable core, wherein a metal isolation layer is sleeved on the outer side of the wrapping tape, an outer sheath is arranged on the outer side of the metal isolation layer, and a filler is arranged between the metal isolation layer and the outer sheath;

the metal isolation layer is provided with a plurality of bamboo joint type isolation parts which are arranged at equal intervals, and when the metal isolation layer is subjected to direct axial extrusion force, one bamboo joint type isolation part which is most adjacent to the axial extrusion force can be broken in an outward bulging mode so as to form a slit outwards towards the outer sheath.

As a further improvement of the invention, the bamboo joint type isolation part is a circle of convex part which is bulged outwards, the cross section of the convex part passing through the axis is in a V shape, the opening of the convex part faces one side of the axis, and an isolation cavity is formed between the convex part and the outer side face of the wrapping tape.

As a further improvement of the invention, a whole ring gap coaxial with the bamboo joint type isolation part is milled at the V-shaped tip of the boss part.

As a further improvement of the invention, the bottom of a full-ring notch is provided with a full-ring edge which is coaxial with the full-ring notch, and the full-ring edge is processed on the grinding machine.

As a further improvement of the invention, the cable core comprises a center cable, the center cable comprises a first conductor and an inner insulating layer extruded outside the first conductor, an inner shielding layer and an inner sheath are sequentially extruded outside the center cable, N strands of outer cables are stranded outside the inner sheath, and the outer cables comprise a second conductor and an outer insulating layer extruded outside the second conductor.

As a further improvement of the invention, the filler is a polypropylene filling rope.

As a further improvement of the invention, a polypropylene filling rope is filled between the cable core and the wrapping tape.

As a further improvement of the invention, the metal isolation layer is made of metal foil, which is convenient for forming the shape because the metal foil has better ductility and light weight, and is easy for cutting off the edge, namely the cutting edge of the edge can be used for cutting off the outer side obstacle at the corresponding position.

As a further improvement of the invention, the wrapping tape is a PVC wrapping tape, so that the protection to the inner cable core is realized.

The invention has the beneficial effects that:

according to the invention, the metal isolation layer is additionally arranged in the traditional reel cable, and the bamboo joint type isolation parts are formed on the metal isolation layer, so that a whole ring gap at a corresponding position can be broken in an outwards bulging mode according to actual requirements, and a neat cutting seam is formed towards the outer sheath, so that a vice or other rigid cutting modes are not required, and the reel cable is prevented from being damaged more deeply; meanwhile, an isolation cavity is formed between the protruding portion and the outer side face of the wrapping tape, so that external extrusion force of a certain degree can be resisted, and a winding drum cable is well protected.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic view of the present invention taken along an axial line;

FIG. 2 is a schematic view of the present invention in its entirety;

FIG. 3 is an enlarged schematic view at I of FIG. 1;

FIG. 4 is a first schematic structural diagram of an actual cable interface process;

fig. 5 is a schematic structural diagram of an actual cable interface processing.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained in the following with the accompanying drawings and the embodiments.

As shown in fig. 1 to 3, the reel cable for shore power supply comprises a cable core 1 and a wrapping tape 2 extruded on the outer surface of the cable core 1, wherein a metal isolation layer 3 is sleeved on the outer side of the wrapping tape 2, an outer sheath 5 is arranged on the outer side of the metal isolation layer 3, and a filler 4 is arranged between the metal isolation layer 3 and the outer sheath 5. The metal isolation layer 3 is provided with a plurality of bamboo joint type isolation parts which are arranged at equal intervals, when the metal isolation layer 3 is subjected to direct axial extrusion force, one bamboo joint type isolation part which is closest to the axial extrusion force can be broken in an outward bulging mode, and a slit is formed outwards on the outer sheath 5. On the basis of a traditional cable structure, the metal isolation layer 3 is creatively introduced, is not a traditional metal shielding or armor structure and is arranged in the cable, so that the metal isolation layer 3 is used for protecting the internal cable structure on one hand, and is specially used for being cut from inside to outside when the cable needs to be connected, the traditional mode of breaking the cable connection from outside to inside is changed, the regularity and the attractiveness of the cut are ensured, and the improvement of the safety performance of the cable connection is facilitated.

The bamboo joint type isolation part is a circle of convex part which bulges outwards and has a V-shaped cross section passing through the axis and an opening facing to one side of the axis, an isolation cavity is formed between the convex part and the outer side surface of the wrapping tape 2, and the isolation cavity can enable the whole cable to have buffering and vibration absorbing performance to a certain degree so as to resist external extrusion force to a certain degree and play a good role in protecting the cable; the V type opening can have the outrigger effect when receiving external extrusion force firstly to resist this kind by radial to the power of cable axis direction, secondly can have the deformation of certain degree, with the in-service use operating mode of adaptation reel cable.

And a whole ring gap 3b coaxial with the bamboo joint type isolation part is milled at the V-shaped tip of the boss. The invention creatively designs a whole-ring gap 3b, which is also the key point of the inside-to-outside breach processing, when a transverse force acts on the metal isolation layer 3, the force can form a bending force around the whole-ring gap 3b along the V-shaped opening structure towards the opening direction by virtue of the V-shaped opening structure, and when the force reaches a certain degree, the whole-ring gap 3b can be broken off.

The bottom of a whole ring gap 3b is provided with a whole ring edge 3a which is coaxial with the whole ring gap 3b, and the whole ring edge 3a is processed on the grinding machine. After an integral ring notch 3b is driven to be broken off by external force, an integral ring edge 3a can move outwards under extrusion thrust by cutting edge processing so as to cut the filler 4 and the outer sheath 5 in sequence, thereby ensuring the regularity of the cut and avoiding damaging the internal cable structure.

The cable core 1 includes central cable, and central cable includes first conductor 9 and crowded package at the inner insulating layer 8 in the first conductor 9 outside, central cable outside is crowded package in proper order has internal shield layer 7,

inner sheath

6, 6 outside transposition of inner sheath have N thigh outer cable, outer cable includes second conductor 11 and crowded package at the outer insulating layer 10 in the 11 outsides of second conductor.

The filler 4 is a polypropylene filling rope.

And a polypropylene filling rope is filled between the cable core 1 and the wrapping tape 2.

The metal isolation layer 3 is a metal foil, which is convenient for forming the shape firstly because the metal foil has better ductility and light weight, and secondly is easy for cutting off the edge, namely the outer side obstacle at the corresponding position can be cut off by utilizing the cutting edge of the edge.

The wrapping tape 2 is a PVC wrapping tape and plays a role in protecting the inner cable core 1.

When the cable is required to be connected, as shown in fig. 4 and 5, the cable is tied by a metal tie 13 after the required connection length is determined, so as to prevent the metal isolation layer 3 on the other side of the metal tie 13 from being damaged by external force. Then, an annular cushion cover 12 made of hard metal is found in a matched mode, the diameter and the thickness of the cushion cover 12 are equal to those of the non-bamboo joint type isolation parts of the metal isolation layer 3 and can be specially customized, then, referring to fig. 4, the cushion cover 12 is attached to the outer end opening of the metal isolation layer 3, the cushion cover 12 is hit by a hammer or other hard objects from the direction shown by an arrow A, a circle of axial force acts on the non-bamboo joint type isolation parts on the metal isolation layer 3, then the axial force is conducted to the bamboo joint type isolation part which is most adjacent to the cushion cover 12 and can be broken in an outward protruding mode, the whole annular ridge 3a moves outwards in a sharpening mode, and along with continuous hitting force, the filler 4 and the outer sheath 5 can be cut, the inside-outside breaking processing is completed, and the cut is tidy. After cutting off, can take out the metal isolation layer 3 that has broken, to the taped strip 2 that exposes out, then can tear by hand or other simple and easy processing methods can open, finally accomplished the processing of cutting off of cable, made things convenient for subsequent wiring operation.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a reel cable is used in bank electricity power supply, includes cable core (1) and crowded package at cable core (1) surface around band (2), its characterized in that: a metal isolation layer (3) is sleeved on the outer side of the wrapping tape (2), an outer sheath (5) is arranged on the outer side of the metal isolation layer (3), and a filler (4) is arranged between the metal isolation layer (3) and the outer sheath (5);

the metal isolation layer (3) is provided with a plurality of bamboo joint type isolation parts which are arranged at equal intervals, when the metal isolation layer (3) is subjected to direct axial extrusion force, one bamboo joint type isolation part which is most adjacent to the axial extrusion force can be broken in an outward bulging mode, and a slot is formed by the outward outer sheath (5).

2. The reel cable for shore power supply according to claim 1, wherein: the bamboo joint type isolation portion is a protruding portion which is formed by a circle of protruding outwards and penetrates through the cross section of the axis and is provided with a V-shaped opening facing the axis, and an isolation cavity is formed between the protruding portion and the outer side face of the wrapping tape (2).

3. The reel cable for shore power supply according to claim 2, wherein: and a whole ring gap (3b) coaxial with the bamboo joint type isolation part is milled at the V-shaped tip of the boss.

4. The reel cable for shore power supply according to claim 3, wherein: the bottom of a whole ring gap (3b) is provided with a whole ring ridge (3a) which is coaxial with the whole ring gap (3b), and the whole ring ridge (3a) is processed on a grinding machine.

5. The reel cable for shore power supply according to claim 1, wherein: cable core (1) is including central cable, and central cable includes first conductor (9) and crowded package at inner insulating layer (8) in first conductor (9) outside, central cable outside is crowded package in proper order has internal shield layer (7), inner sheath (6) outside transposition has N strand outer cable, outer cable includes second conductor (11) and crowded package outer insulating layer (10) in the second conductor (11) outside.

6. The reel cable for shore power supply according to claim 1, wherein: the filler (4) is a polypropylene filling rope.

7. The reel cable for shore power supply according to claim 1, wherein: and a polypropylene filling rope is filled between the cable core (1) and the wrapping tape (2).

8. A drum cable for shore power supply according to any one of claims 1 to 7, characterized in that: the metal isolation layer (3) is a metal foil.

9. The reel cable for shore power supply according to claim 1, wherein: the wrapping tape (2) is a PVC wrapping tape.