CN215265693U - Optical fiber composite medium-voltage flat cable - Google Patents

Abstract

The utility model discloses a compound middling pressure flat cable of optic fibre, include the inner sheath and set up in the inner sheath cable core, the cable core includes three power sinle silks and an optic fibre sinle silk, wherein two the power sinle silk contacts, another the power sinle silk contacts with the optic fibre sinle silk, the power sinle silk includes conductor, cladding in the outside semiconduction nylon belt layer of conductor, crowded package in the insulating layer outside semiconduction nylon belt layer and weave the metallic shield layer outside the insulating layer, the inner sheath is provided with the enhancement layer outward, crowded package has the oversheath outside the enhancement layer. When the inner sheath is extruded, the thickness of the inner sheath is ensured not to have obvious eccentricity, the appearance of the cable is flat, and the cross sections are connected into a whole. The problems of wave deformation, bulging and twisting of the flat cable are solved.

Description

Optical fiber composite medium-voltage flat cable

Technical Field

The utility model relates to a flat cable field especially relates to a flat cable of compound middling pressure of optic fibre.

Background

The power flat cable is frequently wound and unwound, and a plurality of problems are exposed after the cable is used. The phenomena of distortion, bulging and the like of the cable are mainly caused, and the operation efficiency and the equipment safety are seriously influenced. The reason for preliminarily judging the deformation of the power cable from various aspects such as use working conditions and different angles is that the cable is stressed unevenly and the tightness of the cable is different among the cable cores in the processing process. The condition that the internal stress distribution of the insulated wire core of the finished cable is uneven exists, and the cable can be stretched or compressed to deform under the action of slight external force for a long time in the using process. Over time, the deformation gradually accumulates, eventually leading to cable wrap. Patent CN201420568973.0 discloses a combination type power optical fiber flat cable, be in including flat sheath and parallel arrangement three intraformational electric power sinle silks and an optical fiber sinle silk are protected to the flat, wherein the electric power sinle silk includes the conductor, and the cladding is in the outside shielding layer of conductor, insulating layer, insulating shielding layer, metallic braid and canvas area are around the covering, the optical fiber sinle silk includes tensile core, the cladding is in the outside buffer layer of tensile core, optical fiber layer winds covering and restrictive coating, the optical fiber layer is formed by plural optical fiber bundle hank. When in use, the material is easy to generate wave deformation and bulge.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flatten cable in the optical fiber is compound to wave deformation, swell and beat the scheduling problem that turns round appear in solving the cable.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a compound medium voltage flat cable of optic fibre, includes the inner sheath and sets up in the inner sheath cable core, the cable core includes three power sinle silks and an optic fibre sinle silk, wherein two the power sinle silk contacts, another the power sinle silk contacts with the optic fibre sinle silk, the power sinle silk includes the conductor, wraps in the outside semiconduction nylon belt layer of conductor, crowded package in the insulating layer outside semiconduction nylon belt layer and weave the metallic shield layer outside the insulating layer, the inner sheath is provided with the enhancement layer outward, crowded package has the oversheath outward outside the enhancement layer. When the inner sheath is extruded, the thickness of the inner sheath is ensured not to have obvious eccentricity, the appearance of the cable is flat, and the cross sections are connected into a whole.

As a further improvement of the above technical solution:

the optical fiber cable core comprises an optical fiber unit, an aramid fiber layer arranged outside the optical fiber unit, an optical cable inner sheath arranged outside the aramid fiber layer, a spiral steel strip armor layer arranged outside the optical cable inner sheath, a metal woven mesh layer arranged outside the spiral steel strip armor layer and an optical cable outer sheath arranged outside the metal woven mesh layer.

The reinforcing layer comprises a weaving net woven by weaving ropes formed by twisting front and back 8 spindles of aramid fibers.

The metal shielding layer comprises a mixed woven mesh woven by tinned copper wires and fiber wires.

The insulating layer comprises an inner shielding semi-conductive rubber layer, an insulating rubber layer and an outer shielding semi-conductive rubber layer.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a flat cable in compound middling pressure of optic fibre adopts 3 power sinle silks and 1 optical cable parallel to extrude. When the inner sheath is extruded, the independent pay-off rack with balanced and adjustable tension is adopted, the optical cable is paid off without tension, and the optical cable is fed freely, so that the problem of uneven stress distribution can be solved. In addition, a reinforcing layer is added between the inner sheath and the outer sheath, the reinforcing layer can increase the overall strength of the flat cable and prevent wave deformation, bulging and twisting, and the outer sheath is butyronitrile polyvinyl chloride, has oil resistance, wear resistance and flame retardance and provides a good mechanical protection effect for the cable.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is the schematic diagram of the structure of the optical fiber core of the present invention.

Reference numerals: 1. a power wire core; 2. an inner sheath; 3. an optical fiber core; 4. a reinforcing layer; 5. an outer jacket; 11. a conductor; 12. a semiconductive nylon tape layer; 13. an insulating layer; 14. a metal shielding layer; 31. an optical fiber unit; 32. an aramid fiber layer; 33. an optical cable inner sheath; 34. a spiral steel tape armor layer; 35. a metal woven mesh layer; 36. and an optical cable outer sheath.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the optical fiber composite medium voltage flat cable of the embodiment includes an inner sheath 2 and a cable core disposed in the inner sheath 2, the cable core includes three power cable cores 1 and one optical fiber cable core 3, wherein two power cable cores 1 are in contact, another power cable core 1 is in contact with the optical fiber cable core 3, and the inner sheath 2 is disposed between the two groups to ensure the stability of the cable core. The power wire core 1 comprises a conductor 11, a semi-conductive nylon belt layer 12 coated outside the conductor 11, an insulating layer 13 extruded outside the semi-conductive nylon belt layer 12 and a metal shielding layer 14 woven outside the insulating layer, a reinforcing layer 4 is arranged outside the inner sheath 2, and an outer protective layer 5 is extruded outside the reinforcing layer 4. The conductor 11 is formed by twisting 5 th class soft copper stranded wires in the same direction, and the resistance of the conductor is in accordance with the GB/T3956-2008 standard regulation. The semiconductor nylon tape layer 12 is wrapped and used for inner shielding, the insulating layer 13 comprises an inner shielding semi-conductive rubber layer, an insulating rubber layer and an outer shielding semi-conductive rubber layer which are co-extruded together, the insulating rubber layer adopts 10 kV-level ethylene propylene rubber XJ-30G insulating rubber, the outer shielding semi-conductive rubber layer is wrapped with a semi-conductive tape to serve as an outer shielding, the metal shielding layer 14 is formed by mixing and weaving 12 ingots (fiber filaments/colored yarns) with 10 pieces/0.3 mm of tinned copper wires and 12 pieces of tinned copper wires, the weaving pitch is 55mm-65mm, and red and blue yarns are placed in the fiber filaments to serve as identification marks during weaving. The cable core of the reinforcing layer 4 is reinforced by weaving 16 spindles (8 spindles on the front and back sides respectively) of aramid fiber yarns (1000 Dx 3), and the outer protective layer 5 is formed by extruding butyronitrile polyvinyl chloride materials and is red in color.

The optical fiber core 3 comprises an optical fiber unit 31, an aramid fiber layer 32 arranged outside the optical fiber unit 31, an optical cable inner sheath 33 arranged outside the aramid fiber layer 32, a spiral steel tape armor layer 34 arranged outside the optical cable inner sheath 33, a metal woven mesh layer 35 arranged outside the spiral steel tape armor layer 34 and an optical cable outer sheath 36 arranged outside the metal woven mesh layer 35. Optical fiber unit 31 includes 24 colored optic fibre of core 0.25mm, and aramid fiber layer 32 includes 4 thigh 1100D aramid fiber, and optical cable inner sheath 33 is formed by crowded package of low smoke and zero halogen material, and spiral steel band armor 34 is 4.7mm spiral steel band armor, and optical cable oversheath 36 is the butyronitrile polyvinyl chloride sheath, should reduce unwrapping wire tension in order to avoid damaging the optic fibre when crowded sheath. It should be noted that 3 power cores were extruded in parallel with 1 cable. The inner sheath 2 is extruded by an independent pay-off rack with balanced and adjustable tension, so that the optical cable is paid off without tension and is freely fed. The prepared cable has the capabilities of cold resistance, corrosion resistance, oil resistance and bending resistance, and is suitable for power and signal transmission in environments such as power plants, ports, docks and the like.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. The utility model provides a cable flattens in compound of optic fibre, includes inner sheath (2) and sets up in inner sheath (2) cable core, the cable core includes three power sinle silk (1) and an optic fibre sinle silk (3), its characterized in that: the power cable comprises two power cable cores (1) which are in contact, the other power cable core (1) is in contact with an optical fiber cable core (3), each power cable core (1) comprises a conductor (11), a semi-conductive nylon belt layer (12) coated outside the conductor (11), an insulating layer (13) extruded outside the semi-conductive nylon belt layer (12) and a metal shielding layer (14) woven outside the insulating layer (13), a reinforcing layer (4) is arranged outside the inner sheath (2), and an outer protective layer (5) is extruded outside the reinforcing layer (4).

2. The fiber optic composite medium voltage flat cable of claim 1, wherein: the optical fiber cable core (3) comprises an optical fiber unit (31), an aramid fiber layer (32) arranged outside the optical fiber unit (31), an optical cable inner sheath (33) arranged outside the aramid fiber layer (32), a spiral steel tape armor layer (34) arranged outside the optical cable inner sheath (33), a metal woven net layer (35) arranged outside the spiral steel tape armor layer (34) and an optical cable outer sheath (36) arranged outside the metal woven net layer (35).

3. The fiber optic composite medium voltage flat cable of claim 2, wherein: the reinforcing layer (4) comprises a weaving net woven by weaving ropes formed by twisting front and back 8 spindles of aramid fibers.

4. The fiber optic composite medium voltage flat cable of claim 3, wherein: the metal shielding layer (14) comprises a mixed woven mesh woven by tinned copper wires and fiber wires.

5. The fiber optic composite medium voltage flat cable of claim 4, wherein: the insulating layer (13) comprises an inner shielding semi-conductive rubber layer, an insulating rubber layer and an outer shielding semi-conductive rubber layer.

Images