CN217467278U

CN217467278U - Light-duty big span high magnetic field full-medium optical cable

Info

Publication number: CN217467278U
Application number: CN202221486821.7U
Authority: CN
Inventors: 沈辰霖; 舒家伟
Original assignee: Ningbo Ingo Electronic Technology Co ltd
Current assignee: Ningbo Ingo Electronic Technology Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-09-20
Anticipated expiration: 2032-06-13

Abstract

The application relates to a light large-span high-magnetic-field all-dielectric optical cable, and belongs to the technical field of optical cables. The optical fiber composite reinforcement comprises a sheath, one composite optical fiber and two FRP reinforcements, wherein the diameters of the composite optical fiber and the FRP reinforcements are consistent, the composite optical fiber and the FRP reinforcements are mutually abutted in pairs, and the sheath is sleeved outside the composite optical fiber and the FRP reinforcements. This application has the higher effect of tensile strength.

Description

Light-duty big span high magnetic field full-medium optical cable

Technical Field

The application relates to the field of optical cables, in particular to a light large-span high-magnetic-field full-medium optical cable.

Background

With the continuous deepening of the construction of the Chinese network, the research and development of novel optical cables are promoted to meet the requirements of the environment requirement, the line safety, the convenience in maintenance and the like brought forward by the market.

At present, the common laying modes of the optical cable mainly comprise overhead modes, direct burial modes, pipeline modes and the like. The overhead mode is suitable for field mountain areas, river areas, forest lands and the like. The aerial optical cable laid in an aerial mode is erected across a long-distance tower according to different laying environments (generally, the span of more than 800m is related), according to research on the market, the structural tensile strength of the all-dielectric ADSS optical cable at the present stage is low, the all-dielectric ADSS optical cable is only suitable for a low-span good laying environment, and if the all-dielectric ADSS optical cable is in a high-span condition, the tensile strength of the ordinary ADSS optical cable is enhanced by adding a large number of aramid yarns, and the cost of the optical cable is increased.

In order to improve the tensile strength of the optical cable, the application designs a novel optical cable.

Disclosure of Invention

In order to improve the tensile strength of optical cable, this application provides a light-duty big span high magnetic field full-medium optical cable.

The application provides a light-duty big span high magnetic field all-dielectric optical cable adopts following technical scheme:

the utility model provides a light-duty big span high magnetic field full medium optical cable, includes sheath, compound optic fibre and FRP reinforcement, the quantity of compound optic fibre is one, the quantity of FRP reinforcement is two, compound optic fibre with FRP reinforcement diameter is unanimous and two liang of mutual butt settings, the sheath cover is located compound optic fibre with outside the FRP reinforcement.

Through adopting above-mentioned technical scheme, through set up fibre reinforced composite FRP reinforcement in the optical cable, mainly play enhancement optical cable tensile and balance performance, make the tensile strength of optical cable better, better adaptation long distance's optical cable is laid, wherein the FRP reinforcement adopts the form of two, and the diameter of FRP reinforcement is unanimous with the diameter of composite fiber, make two FRP reinforcements and composite fiber can two liang of butt and outer edge be located same circle, the sheath can be better with FRP reinforcement and composite fiber butt, the structure is compacter, the internal state is more stable, be difficult to appear, because the flagging of optical cable, and FRP reinforcement and composite fiber have the skew space in the sheath, the fracture that one of them FRP reinforcement or composite fiber that leads to receive the effort alone and arouse influences the use of optical cable, stability is better.

Optionally, a gap between the sheath and the composite optical fiber and between the sheath and the FRP reinforcement is filled with a polyester binder.

Through adopting above-mentioned technical scheme, it has the mode that polyester pricks the yarn to fill through the space between sheath and compound optic fibre and FRP reinforcement, further improves the structural stability of optical cable, pricks the skew change of yarn restriction FRP reinforcement and compound optic fibre in the sheath through polyester.

Optionally, a tearing rope is arranged in a gap between the sheath and the composite optical fiber and between the sheath and the FRP reinforcement, and a tearing rope is arranged in the sheath.

Through adopting above-mentioned technical scheme, tear the rope through the setting, improve the tensile of optical cable and drag the performance, absorb the heat that the optical cable distributed out in the use through tearing the rope simultaneously, all set up the mode of tearing the rope in the sheath and the space of sheath and composite fiber and FRP reinforcement, improve the effect that the rope produced of tearing, two internal and external cooperations of tearing the rope protect sheath and composite fiber simultaneously.

Optionally, the composite optical fiber includes a plurality of optical fibers and a PBT loose sleeve wrapped outside the optical fibers, and a gap between the optical fibers and the PBT loose sleeve is filled with water-blocking fiber paste.

Through adopting above-mentioned technical scheme, through the fine cream parcel optic fibre that blocks water, play the water proof effect, the PBT pine cover has good mechanical properties and thermal stability, is difficult for receiving the erosion of solvent and chemicals, better protection optic fibre, the fine cream that blocks water simultaneously has filled the clearance between the optic fibre for when the optical cable used, optic fibre is stable more and is difficult to, and the skew in the PBT pine cover, simultaneously, the PBT pine cover keep with the butt state between FRP reinforcement and the sheath.

Optionally, a water blocking yarn is disposed in a gap between the sheath and the composite optical fiber and between the sheath and the FRP reinforcement.

Through adopting above-mentioned technical scheme, through the polymer that absorbs water that the yarn that blocks water contained volume inflation after absorbing water to thereby fill the moisture circulation passageway in the optical cable and play the effect of blocking water, the yarn that blocks water itself simultaneously absorbs water and also plays the effect of blocking water, because the increase of quality after intaking in the optical cable, the yarn cooperation polyester that blocks water after the inflation pricks the yarn, makes the optical cable inside inseparabler, keeps the stability of structure, is difficult to influence the intensity of itself because the increase of quality and inside intake.

Optionally, the sheath includes a PE inner sheath and an AT tracking-resistant outer sheath that are separately disposed inside and outside.

By adopting the technical scheme, the tracking resistance of the optical cable is improved through the external AT tracking-resistant outer protective layer, the cable is not easy to generate electricity leakage and breakdown phenomena due to the ADSS in a strong electric field when in foggy, humid and polluted weather conditions or raining, and the PE inner protective layer and the AT tracking-resistant outer protective layer are compounded, so that various requirements can be met.

Optionally, a high-modulus aramid yarn is arranged in the sheath.

Through adopting above-mentioned technical scheme, improve the bulk strength of optical cable through set up one deck high modulus aramid yarn in the sheath, compare in filling a large amount of high modulus aramid yarns, fill the mode of high modulus aramid yarn in the sheath, the cost is lower to protect inside optic fibre through the mode of protection sheath.

Optionally, the water blocking yarn abuts against the composite optical fiber, a tearing rope is arranged in a gap between the sheath and the composite optical fiber and between the sheath and the FRP reinforcements, the tearing rope is located between the two FRP reinforcements, and the water blocking yarn is located between the composite optical fiber and the FRP reinforcements.

Through adopting above-mentioned technical scheme, the form of yarn butt composite fiber blocks water for the play effect that the yarn can be better blocks water, prevents moisture entering composite fiber, tears the rope simultaneously and sets up different regions with the yarn branch that blocks water, thereby can not influence each other, tears the rope and can not hinder the collision when the yarn that blocks water became effect, and it is more even to distribute.

In summary, by arranging the fiber reinforced composite material FRP reinforcement in the optical cable, the tensile strength and the balance performance of the reinforced optical cable are mainly achieved, the tensile strength of the optical cable is better, and the fiber reinforced composite material FRP reinforcement is better suitable for long-distance optical cable laying, wherein the FRP reinforcements adopt two forms, and the diameters of the FRP reinforcements are consistent with the diameters of the composite optical fibers, so that the two FRP reinforcements and the composite optical fibers can be abutted in pairs and the outer edges of the two FRP reinforcements and the composite optical fibers are located in the same circle, the sheath can be abutted with the FRP reinforcements and the composite optical fibers better, the structure is more compact, the internal state is more stable, the fiber reinforced composite material FRP reinforcement is not easy to appear, due to the drooping of the optical cable, the FRP reinforcements and the composite optical fibers have offset spaces in the sheath, the use of the optical cable is affected by the fracture caused by the single excessive stress of one of the one FRP reinforcement or the composite optical fiber, and the stability is better.

Drawings

Fig. 1 is a cross-sectional view of a fiber optic cable in an embodiment of the present application.

Description of reference numerals: 1. a sheath; 11. PE inner protective layer; 12. high modulus aramid yarns; 13. an AT tracking-resistant outer jacket; 2. a composite optical fiber; 21. an optical fiber; 22. PBT loose sleeves; 3. an FRP reinforcement; 4. tearing the rope; 5. water-blocking yarn; 6. polyester binding yarn; 7. water-blocking fiber paste.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a light-duty big span high magnetic field full-medium optical cable.

Referring to fig. 1, a light-duty big span high magnetic field all-dielectric optical cable, including sheath 1, compound optic fibre 2 and FRP reinforcement 3, wherein the quantity of compound optic fibre 2 is one, the quantity of FRP reinforcement 3 is two, and the diameter of compound optic fibre 2 is unanimous with the diameter of FRP reinforcement 3, compound optic fibre 2 sets up with two liang mutual butts of FRP reinforcement 3, the diameter of the circumscribed circle that compound optic fibre 2 and FRP reinforcement 3 enclose is unanimous with the internal diameter of sheath 1, make compound optic fibre 2 and

FRP reinforcement

3 and 1 inner wall butt of sheath.

Still be provided with in the sheath 1 and tear rope 4 and the yarn 5 that blocks water, tear rope 4 and be located between two FRP reinforcement 3, the yarn 5 that blocks water is located between composite fiber 2 and the FRP reinforcement 3, and the yarn 5 that blocks water and composite fiber 2 butt each other, and the cross section of the yarn 5 that blocks water can be circular, also can be the shape of laminating composite fiber 2 outer wall.

The gaps on the inner wall of the sheath 1 except the composite optical fiber 2, the FRP reinforcement 3, the tearing rope 4 and the water-blocking yarn 5 are filled with polyester tying yarns 6.

The composite optical fiber 2 comprises a plurality of optical fibers 21 and a PBT loose sleeve 22 wrapped outside the optical fibers 21, the number of the optical fibers 21 can be 2-12, the number of the optical fibers 21 in the embodiment is 6, and water-blocking fiber paste 7 is filled in a gap between the optical fibers 21 and the PBT loose sleeve 22.

Sheath 1 includes that the three-layer is PE inner sheath 11, high-modulus aramid yarn 12 and the resistant trace outer jacket 13 of AT respectively from inside to outside, also is provided with one in the high-modulus aramid yarn 12 and tears rope 4, and the central interval 90 degrees settings of the inside relative optical cable of rope 4 that tears of yarn 6 are pricked with the polyester to tearing rope 4 in the high-modulus aramid yarn 12, and the direction of angular deviation is close to the yarn 5 settings that block water for tensile atress position distributes more rationally.

The tear cord 4 in the high modulus aramid yarn 12 also facilitates stripping.

It should be noted that the composite optical cable and the two FRP reinforcements 3 are SZ-stranded at a certain pitch, and are fixed by using 2 polyester binder yarns 6 after stranding, and the two polyester binder yarns 6 are twisted in opposite directions to fix the composite optical fiber 2.

The implementation principle of the light large-span high-magnetic-field all-dielectric optical cable is as follows: the optical cable is light in weight, large in span, strong in magnetic field interference resistance and convenient to construct, and the optical cable span can meet 1000 meters; the optical cable breaking force is 50 KN; short-term tension of 30 KN; long-term tension of 10 KN; the short-term flattening force of the optical cable is 3000N/10 cm; long-term flattening force 1000N/10 cm.

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.

Claims

1. The utility model provides a light-duty big span high magnetic field full medium optical cable which characterized in that: the optical fiber composite structure comprises a sheath (1), composite optical fibers (2) and FRP reinforcements (3), wherein the number of the composite optical fibers (2) is one, the number of the FRP reinforcements (3) is two, the composite optical fibers (2) and the FRP reinforcements (3) have the same diameter and are arranged in a mutually abutting mode in pairs, and the sheath (1) is sleeved outside the composite optical fibers (2) and the FRP reinforcements.

2. The light-duty large-span high-magnetic-field all-dielectric optical cable according to claim 1, characterized in that: and polyester binder yarns (6) are filled in gaps among the sheath (1), the composite optical fiber (2) and the FRP reinforcing piece (3).

3. The light-duty large-span high-magnetic-field all-dielectric optical cable according to claim 1, characterized in that: tearing ropes (4) are arranged in gaps among the sheath (1), the composite optical fiber (2) and the FRP reinforcing piece (3), and the tearing ropes (4) are arranged in the sheath (1).

4. The light-duty large-span high-magnetic-field all-dielectric optical cable according to claim 1, characterized in that: the composite optical fiber (2) comprises a plurality of optical fibers (21) and a PBT loose sleeve (22) wrapping the optical fibers (21), and water-blocking fiber paste (7) is filled in a gap between the optical fibers (21) and the PBT loose sleeve (22).

5. The light-duty large-span high-magnetic-field all-dielectric optical cable according to claim 1, characterized in that: and water blocking yarns (5) are arranged in gaps among the sheath (1), the composite optical fibers (2) and the FRP reinforcing piece (3).

6. The light-duty large-span high-magnetic-field all-dielectric optical cable according to claim 1, characterized in that: the sheath (1) comprises an inner PE protective layer (11) and an outer AT tracking-resistant protective layer (13) which are arranged inside and outside in a separated mode.

7. The light-duty large-span high-magnetic-field all-dielectric optical cable according to claim 1, characterized in that: the high-modulus aramid yarn (12) is arranged in the sheath (1).

8. The light-duty large-span high-magnetic-field all-dielectric optical cable according to claim 5, characterized in that: the water blocking yarn (5) is abutted to the composite optical fiber (2), a tearing rope (4) is arranged in a gap between the sheath (1) and the composite optical fiber (2) and the FRP reinforcing pieces (3), the tearing rope (4) is located between the FRP reinforcing pieces (3), and the water blocking yarn (5) is located between the composite optical fiber (2) and the FRP reinforcing pieces (3).