CN211014742U

CN211014742U - All-dielectric multipurpose outdoor optical cable

Info

Publication number: CN211014742U
Application number: CN201922163016.5U
Authority: CN
Inventors: 尤徐; 陈建飞; 周娟
Original assignee: Jiangsu Zhongtian Technology Co Ltd
Current assignee: Jiangsu Zhongtian Technology Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-07-14
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses an outdoor optical cable of full medium multipurpose contains optical fiber unit, inner sheath, FRP armor and oversheath, and the outer side at the optical fiber unit is established to the inner sheath cover, and the FRP armor is by many strip FRP material strands in the outer side of inner sheath, and the oversheath sets up the outside at the FRP armor. The utility model discloses a flat/circular FRP armor has improved the ability that the anti rodent of optical cable gnaw and stings, adopts the nylon materials as inside and outside sheath, has improved the anti side pressure performance of optical cable, plays simultaneously and prevents the ant effect, and the use of oleamen has been stopped to the product, need not the cleanness and accords with the optical cable ecological development trend.

Description

All-dielectric multipurpose outdoor optical cable

Technical Field

The utility model relates to an outdoor optical cable, especially an all-dielectric multipurpose outdoor optical cable.

Background

Outdoor optical cables of the type of pipeline/aerial/direct-buried and the like are widely applied to the construction of communication lines at home and abroad. According to the structural characteristics of outdoor optical cables, most of the products adopt a layer-stranding/central-tube structure, a loose tube forms an optical fiber unit, glass fiber yarns, FRP (fiber reinforced plastic), aramid fibers, steel wires, stranded wires and the like are used as tensile elements, or metal tape armoring is adopted to improve the shock resistance/lateral pressure resistance, and the glass fiber yarns/metal tape/FRP rod/sheath additive and the like are used as main measures for preventing rodents from biting. According to the development trend of the optical cable industry, the main characteristics of future optical cable development comprise lighter weight, more compact size, more environment-friendly construction and the like. The existing outdoor optical cable is in a metal belt armoring form for rat prevention/direct burial/pipeline application, is large in weight and size, is mostly in an ointment filling/or semi-dry structure (ointment filling is adopted in a loose sleeve), needs a complex construction process as a whole, needs an organic solvent to remove the grease, and particularly has certain influence on the environment due to the fact that the grease is not easily degraded after the optical cable is abandoned.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an all-dielectric multipurpose outdoor optical cable is provided, light in weight and totally do not have grease.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

an all-dielectric multipurpose outdoor optical cable is characterized in that: contain optical fiber unit, inner sheath, FRP armor and oversheath, the inner sheath sets up in optical fiber unit's the outside, and the sheath outside including the FRP armor is twisted by many strip FRP material, and the oversheath sets up in the outside of FRP armor.

Furthermore, the optical fiber unit comprises a plurality of micro-beam tubes, each micro-beam tube comprises a plurality of colored optical fibers and a micro-beam tube protective sleeve sleeved outside the colored optical fibers, and the plurality of micro-beam tubes adopt a beam-shaped structure.

Further, the optical fiber unit further comprises water blocking yarn, and the water blocking yarn is wound on the outer side of the optical fiber unit.

Further, still include the water-blocking tape, the water-blocking tape sets up between yarn and inner sheath or sets up between FRP armor and oversheath that blocks water.

Further, the inner sheath is made of nylon or polyethylene.

Further, the outer sheath is made of nylon or polyethylene.

Furthermore, the composite cable further comprises a reinforcing layer, wherein the reinforcing layer is made of aramid fiber or glass fiber yarns, and the reinforcing layer is arranged on the inner side of the inner sheath or between the FRP armor and the outer sheath.

Further, the strip-shaped FRP material is a flat rectangular FRP strip.

Further, the strip-shaped FRP material is a circular FRP strip.

Further, the plurality of strip-shaped FRP materials SZ are stranded on the outer side of the inner sheath.

Compared with the prior art, the utility model, have following advantage and effect: the utility model discloses a flat/circular FRP armor has improved the ability that the rodent of optical cable gnaw and stings, adopts the nylon materials as inside and outside sheath, has improved the anti side pressure performance of optical cable, plays the ant prevention effect simultaneously, and the use of oleamen has been stopped to the product, need not to clean and accord with the optical cable ecological development trend; the micro-beam tube is selected as the optical fiber unit, so that the sleeve does not have bending risk in the construction and permission process of the optical cable; the cable core adopts a beam-shaped structure, and can reach the minimum size by combining a micro-beam tube; the optical cable has an all-dielectric structure, and the weight of the optical cable is obviously reduced.

Drawings

Fig. 1 is a schematic view of an all-dielectric multi-purpose outdoor optical cable according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are illustrative of the present invention and are not intended to limit the present invention.

Example 1:

as shown in fig. 1, the utility model relates to an outdoor optical cable of all-dielectric multipurpose contains optical fiber unit 1, inner sheath 2, FRP armor 3 and oversheath 4, and inner sheath 2 sets up in optical fiber unit 1's the outside, and the FRP armor 3 is by many strip FRP material strands in the outer side of sheath 2, and oversheath 4 sets up in FRP armor 3's the outside.

The optical fiber unit 1 comprises a plurality of micro-beam tubes, each micro-beam tube comprises a plurality of colored optical fibers and a micro-beam tube protective sleeve sleeved outside the colored optical fibers, and the plurality of micro-beam tubes are arranged in the inner protective sleeve in a beam structure.

The inner sheath 1 is made of nylon material, and the outer sheath 4 is made of polyethylene material. The strip-shaped FRP material is a flat rectangular FRP strip.

Example 2:

the utility model provides an outdoor optical cable of all-dielectric multipurpose, contains optical fiber unit 1, inner sheath 2, FRP armor 3 and oversheath 4, and inner sheath 2 sets up in optical fiber unit 1's the outside, and the FRP armor 3 is by many strip FRP material twists including the 2 outsides of sheath, and oversheath 4 sets up in FRP armor 3's the outside.

The all-dielectric multipurpose outdoor optical cable further comprises water-blocking yarns 5 and water-blocking tapes 6, wherein the water-blocking yarns 5 are wound on the outer side of the optical fiber units, and the water-blocking tapes 6 are arranged between the water-blocking yarns 5 and the inner sheath 2 or between the FRP armor 3 and the outer sheath 4.

The inner sheath is made of nylon material, and the outer sheath is made of nylon sleeve or polyethylene or double-layer co-extrusion (inner polyethylene and outer nylon).

According to the requirement, a reinforcing layer can be arranged, the reinforcing layer is made of aramid fiber or glass fiber yarn, and the reinforcing layer is arranged on the inner side of the inner sheath 2 or between the FRP armor 3 and the outer sheath 4.

The strip-shaped FRP material is a round FRP strip. And a plurality of strip-shaped FRP materials SZ are stranded on the outer side of the inner sheath.

Taking the 144 core structure of the optical cable of this embodiment as an example, the production and manufacturing process of the optical cable structure is as follows:

a micro-beam tube production process: inspecting optical fiber pay-off equipment, installing the colored optical fiber, and adjusting to proper pay-off tension; installing the water-blocking yarn (generally not more than 500D) with smaller specification on a special pay-off rack (a dry micro-bundle pipe), and adjusting to proper pay-off tension; uniformly distributing the colored optical fibers (and the water-blocking yarns) through a branching die, and drawing the colored optical fibers (and the water-blocking yarns) out to an extrusion molding machine head for later use; checking whether the assembly of the die of the micro-beam tube is correct, extruding an empty tube after the processing temperature is reached, checking and adjusting the core deviation and the size of the empty tube, and drawing the empty tube to the drawing position of a take-up frame after the checking and the adjusting are finished; the colored optical fiber (and the water-blocking yarn) passes through an extrusion molding die, is sent to a take-up stand to be drawn, and the size of the micro-bundle tube and the concentricity of the sheath are checked again and are adjusted properly; opening a filling device for the fiber paste, checking the surface condition of the micro-beam tube at the outlet of the extrusion molding die, checking the filling amount of the fiber paste, the size and the appearance condition at the traction part, and properly adjusting; and the upper plate completes the production of the process.

The production process of the inner sheath comprises the following steps: installing the micro-beam tube on a stranding cage pay-off rack, and adjusting to proper pay-off tension; a plurality of water-blocking yarns are arranged on twisting equipment and adjusted to proper paying-off tension; checking the assembly condition of the sheath mold, extruding a nylon hollow pipe after the processing temperature is reached, adjusting the concentricity, and drawing a traction part for later use; the micro-bundle tube and the water-blocking yarn are together penetrated into an extrusion molding die and drawn to a traction position, and the appearance quality, the size, the concentricity and other indexes of the nylon sheath are checked and properly adjusted; and (4) winding up the upper disc.

Cabling procedure: the prepared flat FRP is well arranged on a pay-off rack, proper pay-off tension is adjusted, and a plurality of flat FRP passes through an SZ twisting table and passes through a proper twisting die to be pulled out for standby; installing the binding yarn (polyester binding yarn or aramid yarn can be selected) to a binding yarn machine, and adjusting to proper binding yarn tension; installing a cable core (nylon inner sheath) on a gantry pay-off rack, adjusting to a proper pay-off tension, penetrating through an SZ twisting table and a cable core hole of a yarn binding machine, and drawing to a take-up traction position for later use; fixing flat FRP on the surface of the cable core by using binding yarns, opening the tractor, opening the yarn binding machine and the SZ twisting table, observing the twisting condition of the FRP on the surface of the cable core, and adjusting the proper twisting pitch and the proper yarn binding pitch; coiling the upper disc;

sheathing: the prepared cable core is arranged on a gantry pay-off rack, the proper pay-off tension is adjusted, and the cable core is pulled to an extrusion molding machine head for standby; checking the assembly condition of the extrusion molding die, after the processing temperature of the outer sheath reaches, penetrating the cable core into the die core, opening the plastic extruding machine, drawing to a take-up drawing position, checking the concentricity and size, checking the appearance condition, and properly adjusting; and (4) winding up the upper disc.

The utility model discloses a flat/circular FRP armor has improved the ability that the rodent of optical cable gnaw and stings, adopts the nylon materials as inside and outside sheath, has improved the anti side pressure performance of optical cable, plays the ant prevention effect simultaneously, and the use of oleamen has been stopped to the product, need not to clean and accord with the optical cable ecological development trend; the micro-beam tube is selected as the optical fiber unit, so that the sleeve does not have bending risk in the construction and permission process of the optical cable; the cable core adopts a beam-shaped structure, and can reach the minimum size by combining a micro-beam tube; the optical cable has an all-dielectric structure, and the weight of the optical cable is obviously reduced.

The above description in this specification is merely illustrative of the present invention. Those skilled in the art can make various modifications or additions to the described embodiments or substitute them in a similar manner without departing from the scope of the present invention as defined in the following claims.

Claims

1. An all-dielectric multipurpose outdoor optical cable is characterized in that: contain optical fiber unit, inner sheath, FRP armor and oversheath, the inner sheath sets up in optical fiber unit's the outside, and the sheath outside including the FRP armor is twisted by many strip FRP material, and the oversheath sets up in the outside of FRP armor.

2. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: the optical fiber unit comprises a plurality of micro-beam tubes, each micro-beam tube comprises a plurality of colored optical fibers and a micro-beam tube protective sleeve sleeved on the outer sides of the colored optical fibers, and the plurality of micro-beam tubes are of a beam-shaped structure.

3. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: the optical fiber unit further comprises water blocking yarns, and the water blocking yarns are wound on the outer sides of the optical fiber units.

4. An all-dielectric multi-purpose outdoor optical cable according to claim 3, wherein: the waterproof structure further comprises a waterproof tape, and the waterproof tape is arranged between the waterproof yarn and the inner sheath or between the FRP armor and the outer sheath.

5. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: the inner sheath is made of nylon or polyethylene.

6. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: the outer sheath is made of nylon or polyethylene.

7. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: the reinforced fiber reinforced FRP armor further comprises a reinforced layer, the reinforced layer is made of aramid fiber or glass fiber yarn, and the reinforced layer is arranged on the inner side of the inner sheath or between the FRP armor and the outer sheath.

8. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: the strip-shaped FRP material is a flat rectangular FRP strip.

9. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: the strip-shaped FRP material is a round FRP strip.

10. An all-dielectric multi-purpose outdoor optical cable according to claim 1, wherein: and the plurality of strip-shaped FRP materials SZ are stranded on the outer side of the inner sheath.