CN211955930U

CN211955930U - Multimode shielding optical cable

Info

Publication number: CN211955930U
Application number: CN202020852006.2U
Authority: CN
Inventors: 蔡华聪
Original assignee: Hangzhou Yanqing Technology Co ltd
Current assignee: Hangzhou Yanqing Technology Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-11-17
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a multimode shielding optical cable, including optic fibre and central reinforcement, central reinforcement is by setting element, the fixed mounting that is located optic fibre central authorities department be in the enhancement core, the fixed mounting of setting element central authorities are in brace rod on the setting element constitutes, the setting element side is equipped with the constant head tank, optic fibre surface cover is equipped with tight covering, the cover is equipped with the insulation shielding layer on the tight covering. The beneficial effects of the utility model are that, the inside reinforcement that is equipped with of optical cable, the reinforcement is by strengthening the core, setting element and brace rod constitute, the strengthening core plays tensile effect, the setting element is responsible for fixed optical fiber position, avoid optic fibre to take place phenomenons such as friction, the brace rod plays the supporting role, it produces the damage to prevent that optic fibre from receiving the extrusion, still be equipped with strengthening rib and enhancement rope in the optical cable, further improve optical cable compressive capacity and life, be provided with waterproof layer and insulating layer in the inoxidizing coating of optical cable, good waterproof nature and fire resistance have, the device reliability is high and long service life.

Description

Multimode shielding optical cable

Technical Field

The utility model relates to an optical cable technical field, especially a multimode shielding optical cable.

Background

Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and the like.

However, the main component of the core optical fiber is high-purity quartz glass, which has very weak physical properties of tensile resistance and bending resistance, and is easily broken when being extruded or impacted by other factors, so the optical cable has a certain compression resistance, and in the process of optical fiber installation, a plurality of core optical fibers are installed together, which is easily collided or extruded, and the service life of the optical cable is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, a multimode shielding optical cable has been designed, including optic fibre and central reinforcement, central reinforcement is by setting element, the fixed mounting that is located optic fibre central authorities department the enhancement core, the fixed mounting of setting element central authorities are in brace rod on the setting element constitutes, the setting element side is equipped with the constant head tank, optic fibre surface cover is equipped with tight covering, the cover is equipped with the insulation shielding layer on the tight covering.

The outer end face of the optical fiber is coated with a heat insulation layer, and cable core fillers are filled between the heat insulation layer and the optical fiber.

The heat insulation layer is characterized in that a supporting layer is arranged on the outer surface of the heat insulation layer, reinforcing ribs are arranged in the supporting layer, and the reinforcing ribs are evenly distributed on the outer surface of the heat insulation layer in a triangular shape.

The outer surface of the insulating shielding layer is coated with an inner sheath, and the reinforcing rib is fixedly sleeved with an outer sheath.

The outer surface of the outer sheath is provided with a waterproof wear-resistant layer.

The reinforced waterproof wear-resistant layer is characterized in that a reinforcing layer is arranged between the outer sheath and the waterproof wear-resistant layer, a plurality of reinforcing ropes are arranged on the reinforcing layer, and the reinforcing ropes are uniformly distributed on the reinforcing layer.

The outer diameter of the inner sheath is the same as the inner diameter of the positioning groove, the inner sheath is installed in a matched mode with the positioning groove, and the optical fibers are evenly distributed on the side wall of the positioning piece.

A fixed cavity is formed between every two adjacent supporting ribs, and an optical fiber is installed in each fixed cavity.

Utilize the technical scheme of the utility model a multimode shielding optical cable of preparation, the inside reinforcement that is equipped with of optical cable, the reinforcement comprises enhancement core, setting element and brace rod, and the enhancement core is the steel wire structure, plays tensile effect in the optical cable, and the setting element is responsible for fixed optical fiber position, avoids contact or the phenomenon of taking place looks mutual friction between optic fibre, influences the use of optical cable itself, and the brace rod plays the supporting role, prevents that optic fibre from receiving the extrusion and producing the damage. Still be equipped with strengthening rib and enhancement rope in the optical cable, further improve the holistic compressive capacity of optical cable, improve life. The protective layer of the optical cable is provided with the waterproof layer and the heat insulation layer, so that the optical cable has good waterproofness and flame retardance. The device has high reliability and long service life.

Drawings

Fig. 1 is a cable structure diagram of a multimode shielded optical cable according to the present invention;

fig. 2 is a structural view of a central strength member of a multimode shielded optical cable according to the present invention;

fig. 3 is a cable structure diagram of embodiment 2 of the multimode shielded cable according to the present invention; in the figure, 1, an optical fiber; 2. a central reinforcement; 3. a positioning member; 4. a reinforcing core; 5. supporting ribs; 6. positioning a groove; 7. a tight wrapping layer; 8. an insulating shield layer; 9. a thermal insulation layer; 10. a cable core filler; 11. a support layer; 12. reinforcing ribs; 13. an inner sheath; 14. an outer sheath; 15. a waterproof wear-resistant layer; 16. a reinforcing layer; 17. a reinforcing cord; 18. and fixing the cavity.

Detailed Description

For a better understanding of the present invention, the following further description is given in conjunction with the following embodiments and accompanying drawings.

Example 1

As shown in fig. 1 and 2, a multimode shielding optical cable comprises an optical fiber 1 and a central reinforcing member 2, wherein the central reinforcing member 2 is composed of a positioning member 3 located at the center of the optical fiber 1, a reinforcing core 4 located at the center of the positioning member 3, and a support rib 5 located on the positioning member 3, a positioning groove 6 is arranged on the side of the positioning member 3, a tight covering layer 7 is sleeved on the outer surface of the optical fiber 1, and an insulating shielding layer 8 is sleeved on the tight covering layer 7. Because the strength of the optical fiber is lower, the reinforced core 4 can improve the overall strength of the optical cable and ensure that the optical cable is not broken. The reinforced core 4 is a steel wire structure, plays a role in supporting and resisting tension in the optical cable, and prevents the optical fiber and the conducting wire from external force, thereby ensuring that the physical performance and the mechanical performance of the optical cable can be kept stable. The tight cladding layer 7 is coated on the outer surface of the optical fiber 1 by adopting a PVC material, the fiber core of the optical fiber is fixed, and the insulation shielding layer 8 plays a role in shielding and insulating, so that the influence of an external electromagnetic field on the inside of the optical cable can be effectively prevented.

As shown in fig. 1, a fixing cavity 18 is formed between two adjacent support ribs 5, and an optical fiber 1 is installed in each fixing cavity 18. The setting element 3 is fixed to be placed in optical cable central point and puts, and constant head tank 6 plays the effect of location optic fibre 1, realizes carrying out regular reasonable arrangement to optic fibre 1 through constant head tank 6. The supporting ribs 5 play a role in supporting and resisting pressure, so that the optical fibers 1 cannot contact the outer-layer protecting sleeve and cannot be extruded, and the stable work of the optical fibers 1 is guaranteed, and the service life is prolonged. The number of the optical fibers shown in fig. 1 is 6, each fixing cavity contains one optical fiber, and the fixing cavity 18 plays a role in separating the optical fibers 1, so that the phenomenon that the optical fibers 1 are separated from the positioning grooves 6 to contact or rub against each other is avoided, and the use of the optical cable is influenced.

The outer end face of the optical fiber 1 is coated with a heat insulation layer 9, and a cable core filler 10 is filled between the heat insulation layer 9 and the optical fiber 1. The cable core filler 10 is composed of polypropylene, calcium carbonate, resin particles and vinyl chloride, and the cable core filler 10 plays a role in protecting the optical fibers from moisture and reducing mutual friction of the optical fibers, prevents water molecules from entering the cable core and flowing longitudinally, so that when the sheath is damaged, the water cannot enter the cable core, and the reliability of communication is ensured. The heat insulation layer 9 is made of polyethylene materials, has a good flame retardant effect, and when the outside of the optical cable burns, the heat insulation layer 9 can effectively prevent the burning from spreading into the optical fiber, so that the structure inside the optical cable is protected to be stable.

As shown in fig. 1, a support layer 11 is arranged on the outer surface of the heat insulation layer 9, reinforcing ribs 12 are arranged in the support layer 11, and the reinforcing ribs 12 are uniformly arranged on the outer surface of the heat insulation layer 9 in a triangular shape. The outer surface of the insulating shielding layer 8 is coated with an inner sheath 13, and an outer sheath 14 is fixedly sleeved on the reinforcing rib 12. The strengthening rib 12 is the triangle-shaped and arranges, and the installation of triangle-shaped has certain stability and crushing resistance and guarantees that strengthening rib 12 is difficult for taking place to warp, and when the optical cable received external force extrusion, strengthening rib 12 played the pressure-bearing effect, thereby strengthening rib 12 realizes weakening pressure through producing slight deformation, protects 1 structure of inside optic fibre.

The outer surface of the outer sheath 14 is provided with a waterproof wear-resistant layer 15. A reinforcing layer 16 is arranged between the outer sheath 14 and the waterproof wear-resistant layer 15, a plurality of reinforcing ropes 17 are arranged on the reinforcing layer 16, and the reinforcing ropes 17 are uniformly distributed on the reinforcing layer 16. The outer diameter of the inner sheath 13 is the same as the inner diameter of the positioning groove 6, the inner sheath 13 is installed in a matched mode with the positioning groove 6, and the optical fibers 1 are evenly distributed on the side wall of the positioning piece 3. Waterproof wearing layer 15 sets up outwardly at the optical cable, contacts with external environment, is equipped with polyurethane in waterproof wearing layer 15 and has waterproof effect, can prevent effectively that external liquid from entering into to the optical cable inside, causes optic fibre 1 to damage. A reinforcing layer 16 is arranged between the outer sheath 14 and the waterproof wear-resistant layer 15, and a plurality of reinforcing ropes 210 are arranged in the reinforcing layer 16, so that the tensile strength and the ductility of the optical cable can be effectively enhanced. Inner sheath 13 plays the effect of inside optic fibre 1 of protection, and oversheath 14 plays the effect of protection cable, and inner sheath 13 and oversheath 14 strengthen the stability of optical cable, improve optical cable life.

Example 2

As shown in fig. 3, the difference from embodiment 1 is that in embodiment 1, one optical cable includes 6 optical fibers 1, in embodiment 2, one optical cable includes 3 optical fibers 1, the central strength member 2 is changed according to the number of optical fibers, wherein the number of the supporting ribs 5 and the positioning grooves 6 is the same as the number of the optical fibers 1, and the shape of the side edge of the positioning member 3 can be changed according to the number of optical fibers and the size of the radius.

In this embodiment, the inside reinforcement that is equipped with of optical cable, the reinforcement comprises enhancement core, setting element and brace rod, and the enhancement core is the steel wire structure, plays tensile effect in the optical cable, and the setting element is responsible for fixed optical fiber position, avoids optic fibre contact or takes place the phenomenon of looks mutual friction, influences the use of optical cable itself, and the brace rod plays the supporting role, prevents that optic fibre from receiving the extrusion and producing the damage. Still be equipped with strengthening rib and enhancement rope in the optical cable, further improve the holistic compressive capacity of optical cable, improve life. The protective layer of the optical cable is provided with the waterproof layer and the heat insulation layer, so that the optical cable has good waterproofness and flame retardance. The device has high reliability and long service life.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. The utility model provides a multimode shielding optical cable, includes optic fibre (1) and central reinforcement (2), its characterized in that, central reinforcement (2) by locating element (3), the fixed mounting that are located optic fibre (1) central authorities department strengthen core (4), the fixed mounting in locating element (3) central authorities brace rod (5) on the locating element (3) constitute, locating element (3) side is equipped with constant head tank (6), optic fibre (1) surface cover is equipped with tight covering (7), it is equipped with insulating shielding layer (8) to cover on tight covering (7).

2. The multimode shielded optical cable according to claim 1, wherein the outer end face of the optical fiber (1) is coated with a thermal insulation layer (9), and a cable core filler (10) is filled between the thermal insulation layer (9) and the optical fiber (1).

3. The multimode shielded optical cable according to claim 2, wherein a support layer (11) is disposed on the outer surface of the thermal insulation layer (9), and reinforcing ribs (12) are disposed in the support layer (11), and the reinforcing ribs (12) are uniformly arranged on the outer surface of the thermal insulation layer (9) in a triangular shape.

4. The multimode shielded optical cable according to claim 3, wherein said insulating shield (8) is covered with an inner sheath (13) on the outer surface thereof, and said reinforcing rib (12) is covered with an outer sheath (14).

5. Multimode shielded optical cable according to claim 4, characterized in that said outer sheath (14) is provided on its outer surface with a waterproof and wear-resistant layer (15).

6. Multimode shielded optical cable according to claim 5, characterized in that a reinforcing layer (16) is provided between said outer sheath (14) and said waterproof and abrasion-resistant layer (15), said reinforcing layer (16) being provided with a plurality of reinforcing cords (17), said reinforcing cords (17) being uniformly arranged on said reinforcing layer (16).

7. The multimode shielded optical cable according to claim 4, wherein the outer diameter of the inner sheath (13) is the same as the inner diameter of the positioning slot (6), the inner sheath (13) is installed in cooperation with the positioning slot (6), and the optical fibers (1) are uniformly arranged on the side wall of the positioning member (3).

8. Multimode shielded optical cable according to claim 1, characterized in that a fixing cavity (18) is formed between two adjacent supporting ribs (5), and an optical fiber (1) is installed in each fixing cavity (18).