CN212379618U

CN212379618U - Full-dry type non-bundle ultra-light aerial optical cable

Info

Publication number: CN212379618U
Application number: CN202021188014.8U
Authority: CN
Inventors: 黄�俊; 陈学山; 祁林; 杨向荣
Original assignee: Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-01-19
Anticipated expiration: 2030-06-23

Abstract

The utility model relates to a full dry-type does not have super light aerial [ insulated ] cable of bundling, including cable core and oversheath, its characterized in that the cable core form by the optical fiber bundle transposition, the optical fiber bundle make through the UV solidification by the resin bonding through optic fibre, the outer oversheath that coats of cable core, the cover body bilateral symmetry of oversheath is inlayed and is had the reinforcement. The full-dry non-binding yarn structure of the utility model increases the cleanliness of construction, improves the construction efficiency and improves the convenience of divergence; the cable opening groove identification rib is arranged, so that a constructor can conveniently and quickly find out the construction direction, the stripping direction of the cable opening knife can be quickly identified when stripping is conducted, and the cable opening knife edge is inserted into the groove. The utility model has simple and reasonable structure, light weight and easy use and laying; the ultralight quality that ultralight material and compact structure brought is favorable to this cable to receive the dead weight influence less when self-supporting is built on stilts, more does benefit to protection optic fibre and promotes the life-span.

Description

Full-dry type non-bundle ultra-light aerial optical cable

Technical Field

The utility model relates to a full dry-type does not have super light aerial optical cable of bundling belongs to optical communication transmission technical field.

Background

Because pipeline resources are in shortage and the high cost of pipeline laying is high, the application of the overhead optical cable in medium and small cities is favored, and the use of the overhead optical cable in the original electric pole and other scenes can increase the convenience of construction and reduce the construction cost. The self-supporting aerial optical cable provides support for self weight through the reinforcing piece of self, and the lighter the self weight is, the smaller the pulling force that the optical cable bears is, the better the influence that is favorable to protecting optic fibre in the cable not tensile stress improves its performance and life-span. In the existing layer stranded optical cable structure, loose sleeves sleeved with optical communication units are stranded together in an SZ stranding mode, and the stranded state is fixed by binding yarns and is not loose in a cabling process so as to ensure the structural extra length of the cable. The layer-stranded optical cable adopting the structure is relatively complex in structure and heavier in self weight, and when branching occurs, loose sleeves can be bound by binding yarns, so that the optical communication units are not easy to extract, and inconvenience is brought to operation. Therefore, there is a need to develop a non-bundled ultra-light aerial cable that is easy to branch off.

Disclosure of Invention

The utility model aims to solve the technical problem that not enough to above-mentioned prior art exists provides a full dry-type does not have super light aerial optical cable that pricks yarn, and it is simple structure not only, light in weight, easily divergence branch moreover, the preparation of being convenient for.

The utility model discloses a solve the technical scheme that the problem that the aforesaid provided adopted and be: the cable comprises a cable core and an outer sheath and is characterized in that the cable core is formed by twisting optical fiber bundles, the optical fiber bundles are formed by bonding optical fibers with resin and curing the optical fibers by UV, the outer sheath is coated outside the cable core, and reinforcing parts are symmetrically embedded on two sides of a sleeve body of the outer sheath.

According to the scheme, the outer surface of the outer sheath is provided with the identification rib protruding outwards, and the identification rib is provided with the cable opening groove.

According to the scheme, the identification ribs are positioned on the outer surface of the outer sheath, which is circumferentially staggered by 90 degrees with the reinforcing piece.

According to the scheme, the number of the optical fiber bundles is 3-8, and the optical fiber bundles are twisted in the outer sheath in a spiral manner.

According to the scheme, the number of the optical fiber cores in the optical fiber bundle is 2-24.

According to the scheme, the outer layer of part or all of the optical fibers in the optical fiber bundle is coated with a water-blocking ink coating, and the thickness of one side of the water-blocking ink coating is 2-5 mu m.

According to the scheme, the diameter of the optical fiber bundle is 0.8-2.1 mm.

According to the scheme, the stranded optical fiber bundle comprises a water-blocking material, wherein the water-blocking material is water-blocking yarn, water-blocking tape or water-blocking powder.

According to the scheme, the outer sheath is a PE, AT or LSZH outer sheath.

According to the scheme, the reinforcing piece is made of FRP, steel wires, twisted steel wires or twisted aramid fibers.

The utility model discloses the manufacturing approach of optical cable as follows:

curing the water-blocking ink coating: firstly, coating and curing transparent water-blocking ink on the surface of a colored optical fiber by using a UV-LED curing process,

and (3) optical fiber bundle forming: then a plurality of optical fibers pass through the fiber splitting plate, wherein the optical fibers coated with the water-blocking ink pass through holes in the middle, the rest optical fibers are uniformly distributed in the holes of the fiber splitting plate in the circumferential direction, the formed optical fiber bundle enters a coloring mold, is wrapped with resin and carries numerical values, and is cured by a UV curing furnace to form a compact optical fiber bundle with a circular section,

extruding the outer sheath: placing two parallel reinforcing pieces in parallel on the head of the sheath plastic extruding machine, and adjusting the tension; the optical fiber bundle is released from a one-way stranding cage pay-off rack behind a machine head, the water-blocking yarns are respectively placed in the middle and around the optical fiber bundle, the one-way stranded optical fiber bundle forms a stranded state, the pitch is adjusted to form the structural excess length required by the design so as to ensure the tensile force of the optical cable, the stranded bundle penetrates through a stranding die and then enters a die core hole, the distance between the stranding die and the die core hole is adjusted so as to ensure that the stranded state is not loose, and finally, the outer sheath is formed by extrusion and die sleeve shape control.

The utility model has the advantages that: 1. the full-dry structure increases the construction cleanliness, improves the construction efficiency and is beneficial to environmental protection; 2. the non-binding yarn process ensures that the subunit is not bound by binding yarn when branching is needed, thereby improving the convenience of branching; 3. the outer layer of the optical fiber is coated with a water-blocking ink coating, so that the optical fiber still has the water-blocking and moisture-resisting functions when being branched into single optical fibers; 4. the cable opening groove identification rib is arranged, so that a constructor can conveniently and quickly find out the construction direction, the stripping direction of the cable opening knife is quickly identified during stripping, and the cable opening knife edge is inserted into the groove; 5. the utility model has simple and reasonable structure, light weight and easy use and laying; the ultra-light weight brought by ultra-light materials and compact structures is beneficial to less influence of self weight when the cable is self-supported, and is more beneficial to protecting optical fibers and prolonging the service life; 6. the utility model has simple process and low manufacturing cost.

Drawings

Fig. 1 is a cross-sectional view of a radial structure according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a radial structure of an optical fiber bundle according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

The full-dry type non-bundle yarn ultra-light self-supporting aerial optical cable is of a circular cross section structure and comprises a cable core and an outer sheath 5, wherein the outer sheath is made of PE (polyethylene), the cable core is formed by twisting optical fiber bundles, the optical fiber bundles are formed by bonding optical fibers 2 through resin 1 and curing the optical fibers through UV (ultraviolet), the optical fiber bundles are 3, the 3 optical fiber bundles are twisted and twisted in the outer sheath in a spiral mode, the number of the optical fiber cores in the optical fiber bundles is 12, the outer layers of the 3 optical fibers in the middle of the optical fiber bundles are coated with a water-blocking ink coating 7, the thickness of a single edge of the water-blocking ink coating is 4 mu m, and the diameter of the optical fiber bundles is 0.8-2.1 mm. The twisted optical fiber bundle comprises a water-blocking material 4, and the water-blocking material is water-blocking yarn. An outer sheath is coated outside the cable core, reinforcing pieces 3 are symmetrically embedded in parallel on two sides of a sleeve body of the outer sheath, and the reinforcing pieces are stranded steel wires or phosphated steel wires. The outer surface of the outer sheath is provided with identification ribs 6 protruding outwards, the cross sections of the identification ribs are two semicircles, the middle of each identification rib is provided with a cable opening groove, the identification ribs are positioned on the outer surface of the outer sheath, which is circumferentially staggered by 90 degrees with the reinforcing part, and the identification ribs are respectively arranged in an up-down symmetrical mode.

Claims

1. The full-dry non-bundle ultra-light aerial optical cable comprises a cable core and an outer sheath and is characterized in that the cable core is formed by twisting optical fiber bundles, the optical fiber bundles are formed by bonding optical fibers through resin and curing the optical fibers through UV (ultraviolet), the outer sheath is coated outside the cable core, and reinforcing pieces are symmetrically embedded on two sides of a sleeve body of the outer sheath.

2. The all-dry type non-binding ultra-light aerial optical cable according to claim 1, wherein the outer surface of the outer sheath is provided with identification ribs protruding outwards, and the identification ribs are provided with cable slots.

3. The all-dry type non-binding ultra-light aerial optical cable according to claim 2, wherein the identification rib is located on an outer surface of the outer jacket circumferentially staggered by 90 ° from the strength member.

4. The all-dry type non-binder ultra-light aerial optical cable according to claim 1 or 2, wherein the number of the optical fiber bundles is 3 to 8, and a plurality of the optical fiber bundles are helically stranded in the outer sheath.

5. The all-dry type non-binder ultra-light aerial optical cable according to claim 4, wherein the number of the optical fiber cores in the optical fiber bundle is 2 to 24.

6. The all-dry type non-bundle ultra-light aerial optical cable according to claim 5, wherein the outer layer of some or all of the optical fibers in the optical fiber bundle is coated with a water-blocking ink coating, and the thickness of one edge of the water-blocking ink coating is 2-5 μm.

7. The all-dry type non-binder ultra-light aerial optical cable according to claim 5, wherein the diameter of the optical fiber bundle is 0.8 to 2.1 mm.

8. The all-dry type non-bundled ultra-light aerial optical cable according to claim 1 or 2, characterized in that the stranded optical fiber bundle contains a water-blocking material, and the water-blocking material is water-blocking yarn, water-blocking tape or water-blocking powder.

9. The all-dry type non-binder ultra-light aerial optical cable according to claim 1 or 2, wherein the outer sheath is a PE, AT or LSZH outer sheath; the reinforcing member is FRP, steel wire, twisted steel wire or twisted aramid fiber.