CN216526441U

CN216526441U - Tip access type armored optical cable

Info

Publication number: CN216526441U
Application number: CN202220078533.1U
Authority: CN
Inventors: 邱勇; 吴祥君; 唐子红; 张华�; 陈芳; 黑鹏; 刘杰; 徐妍
Original assignee: Chengdu Hengtong Optical Communication Co Ltd
Current assignee: Chengdu Hengtong Optical Communication Co Ltd
Priority date: 2022-01-12
Filing date: 2022-01-12
Publication date: 2022-05-13
Anticipated expiration: 2032-01-12

Abstract

The utility model relates to a tip access type armored optical cable, comprising: the optical fiber cable comprises a plurality of optical fibers, a loose tube, a water-blocking layer, an armor layer and a sheath layer, wherein the loose tube is coated outside the optical fibers, and a fiber paste is filled between the loose tube and the optical fibers; the loose tube comprises an inner layer tube and an outer layer tube, wherein the inner layer tube is a flexible tube made of polypropylene, the outer layer tube is a rigid tube made of modified polycarbonate, and the loose tube not only has flexibility but also has certain rigidity by adopting a mode of combining a flexible inner tube and a rigid outer tube, so that the mechanical property of the optical cable is improved, and the service life of the optical cable is prolonged.

Description

Tip access type armored optical cable

Technical Field

The utility model relates to the technical field of optical cables, in particular to a tip access type armored optical cable.

Background

The existing GYTA or GYTS type optical cable can meet the use requirements of customers, and the optical cable adopts a layer-stranded twisting mode, so that the optical cable has large outer diameter and heavy weight due to more twisting units; in the central tube type optical cable, the loose tube material is mostly made of PBT material, but in the production process of the loose tube, the crystallization of PBT molecules is not completely crystallized all the time, so that the later hydrolysis is easy to be serious, the loose tube is easy to age and generate a phenomenon of brittleness, and the PBT loose tube has the characteristics of high strength, strong rigidity and high density, so that the weight of the optical cable in unit length is larger; therefore, the use of PBT loose tube affects the laying efficiency of the optical cable at the tip section on one hand and the mechanical properties of the optical cable on the other hand, resulting in a low service life of the optical cable.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the problem of poor mechanical property of the PBT loose tube of the optical cable in the prior art, and a tip access type armored optical cable which has good mechanical property and is convenient to lay needs to be provided.

In order to solve the above technical problems, the present invention provides a tip access type armored optical cable, comprising: the optical fiber cable comprises a plurality of optical fibers, a loose tube, a water-blocking layer, an armor layer and a sheath layer, wherein the loose tube is coated outside the optical fibers, and fiber paste is filled between the loose tube and the optical fibers; the water-resistant layer is coated outside the loose sleeve; the armor layer is coated outside the water-blocking layer; the sheath layer cladding in outside the armor, and with evenly fill between the armor has the oleamen, the internal symmetry of sheath is provided with parallel reinforcement.

In one embodiment of the utility model, the sheath layer comprises an inner sheath layer and an outer sheath layer, the inner sheath layer is a chemical rat-proofing layer containing a rat repelling agent, the inner sheath layer is made of polyethylene, and the outer sheath layer covers the inner sheath layer.

In an embodiment of the present invention, the outer sheath layer is a hard protective layer made of high density polyethylene.

In an embodiment of the present invention, the sheath layer is a flame retardant layer made of a low smoke zero halogen material.

In one embodiment of the present invention, the water-blocking layer is water-blocking cable paste, water-blocking tape, or water-blocking yarn.

In one embodiment of the utility model, the armor is provided with an opening cable.

In one embodiment of the utility model, the armor layer is a metal armor layer made of steel-plastic composite tapes.

In one embodiment of the present invention, the armor layer is a non-metallic armor layer made of FRP or fiberglass.

In one embodiment of the present invention, the reinforcing member is a metal reinforcing round bar made of phosphated steel wire.

In one embodiment of the present invention, the reinforcing member is a non-metal reinforcing round bar made of FRP or fiberglass.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

the utility model relates to a tip access type armored optical cable which comprises the following components:

1. the loose tube includes inlayer sleeve pipe and outer sleeve pipe, the inlayer sleeve pipe is that the material is the flexible sleeve pipe of polypropylene, outer sleeve pipe is that the material is the rigid sleeve pipe of modified polycarbonate, the inlayer sleeve pipe of flexible material can finely resist the impact of external force, the intraductal optic fibre of protective sheath does not receive the influence of external stress, the outer sleeve pipe of inlayer sleeve outside cladding has high strength, can play fine guard action to whole loose tube, the mode that adopts flexible inner tube and rigid outer tube to combine makes loose tube not only have the flexibility, but also has certain rigidity, be favorable to improving the mechanical properties of optical cable, the life of extension optical cable.

2. The restrictive coating adopts bilayer structure, and the inner sheath layer is chemical protection against rodents layer, has the oversheath layer that hardness is high outside the outer cladding of restrictive coating, carries out physics protection against rodents after becoming invalid on the oversheath layer, can utilize the rat repelling agent in the inner sheath layer to carry out the chemistry protection against rodents, and then realizes initiative protection against rodents, prevents effectively that the optical cable from being destroyed.

3. Still evenly fill between restrictive coating and the armor has the oleamen, effectively prevents that the optical cable preparation from accomplishing the back or the restrictive coating produces the cable core shrink that the shrink drove the optical cable in the use to guarantee the optical property of optical cable.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic view showing the construction of a armored cable of a tip access type according to preferred embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a tip access type armored cable according to a preferred embodiment 2 of the present invention.

The specification reference numbers indicate: 1. an optical fiber; 2. loosening the sleeve; 3. a water resistant layer; 4. an armor layer; 5. an ointment; 6. a sheath layer; 7. a reinforcement; 21. an inner casing; 22. an outer casing; 41. opening a cable; 61. an inner jacket layer; 62. an outer jacket layer.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Example 1

Referring to fig. 1, an embodiment of a tip-access armored fiber optic cable of the present invention includes:

six colored optical fibers 1, wherein the colored optical fibers 1 adopt conventional G652D type optical fibers;

the loose tube 2, the loose tube 2 is coated outside the optical fiber 1, and the fiber paste is filled between the loose tube 2 and the optical fiber 1; the loose tube 2 comprises an inner layer tube 21 and an outer layer tube 22, the inner layer tube 21 is a flexible tube made of polypropylene, the outer layer tube 22 is a rigid tube made of modified polycarbonate, the outer layer tube 22 is coated outside the inner layer tube 21, the inner layer tube 21 made of flexible material can well resist the impact of external force, the optical fiber 1 in the protective tube is not affected by external stress, and the outer layer tube 22 with high strength is coated outside the inner layer tube 21, so that the whole loose tube 2 can be well protected; the loose tube 2 not only has flexibility but also has certain rigidity by adopting a mode of combining the flexible inner tube and the rigid outer tube, thereby being beneficial to improving the mechanical property of the optical cable and prolonging the service life of the optical cable;

the waterproof layer 3 is coated outside the loose tube 2, so that water can be effectively prevented from entering the optical cable, and the waterproof performance of the optical cable is improved;

the armor layer 4 is coated outside the water-resistant layer 3, and the armor layer 4 can enhance the mechanical properties of the optical cable such as tensile strength, compressive strength and the like so as to protect the prolonged service life of the optical cable and improve the anti-interference performance of the optical cable through shielding protection;

the sheath layer 6 is coated outside the armor layer 4 and used for protecting the cable core, so that the cable core is prevented from being influenced by external mechanical action and environmental conditions; factice 5 is uniformly filled between the sheath layer 6 and the armor layer 4, so that the phenomenon that the shrinkage of the cable core of the optical cable is driven by the shrinkage of the sheath layer 6 after the optical cable is manufactured or in the using process is effectively prevented, and the optical performance of the optical cable is ensured; the inside symmetry that still is provided with two parallel reinforcements 7 of restrictive coating 6, reinforcement 7 can improve the tensile ability of optical cable in the construction, improves the mechanical properties of optical cable.

Specifically, the sheath layer 6 is a flame retardant layer made of a low-smoke halogen-free material, the low-smoke halogen-free optical cable has excellent flame retardant performance, and toxic smoke can not be generated even if the optical cable burns.

Specifically, the water-blocking layer 3 is water-blocking cable paste, a water-blocking tape or water-blocking yarn, and can effectively prevent the optical cable from entering water.

Specifically, be provided with on armor 4 and open hawser 41, during the construction accessible is opened hawser 41 and is peeled off armor 4, avoids the problem that appears the inner structure damage when using tools to peel off armor 4, has reduced the optical cable and has opened and shell the degree of difficulty.

Specifically, armor 4 can be the metal armor of material for steel-plastic composite band, and metal armor 4 hardness is high, makes the optical cable can bear great axial tension, can protect the cable core moreover, plays the protection against rodents and stings effect such as worm-eaten, improves the life of optical cable.

Specifically, the armor layer 4 can be a nonmetal armor layer made of FRP or glass fiber, and the nonmetal armor layer 4 has the advantages of light weight, high tensile strength, lateral pressure resistance, rat bite resistance, bird pecking resistance, lightning stroke resistance and the like, and can effectively reduce the weight of the optical cable.

Specifically, the reinforcement 7 can be a metal reinforcing round bar made of phosphatized steel wires, and the metal reinforcement 7 can improve the tensile property of the optical cable.

Specifically, reinforcement 7 can be the material and strengthen the round bar for FRP or glass fiber's nonmetal, and nonmetal reinforcement 7 has strengthened the tensile properties of optical cable on the one hand, and on the other hand pliability is good, and is resistant crooked, can effectually avoid the influence that bad construction brought.

Example 2

Referring to fig. 2, the present embodiment is different from the above embodiment 1 only in that: sheath layer 6 includes inner sheath layer 61 and oversheath layer 62, and inner sheath layer 61 is the chemical protection against rodents layer that contains the rat repelling agent, and inner sheath layer 61 material is polyethylene, and oversheath layer 62 cladding is outside inner sheath layer 61, and oversheath layer 62 is the stereoplasm protective layer that the material is high density polyethylene, and after the physical protection against rodents effect of oversheath layer 62 became invalid, can utilize the rat repelling agent in the inner sheath layer 61 to carry out the chemistry protection against rodents, and then realizes initiative protection against rodents, prevents effectively that the optical cable from being destroyed.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A tip-access armored fiber optic cable, comprising:

a plurality of optical fibers;

the loose tube is coated outside the optical fiber, and fiber paste is filled between the loose tube and the optical fiber; the loose sleeve comprises an inner sleeve and an outer sleeve, the inner sleeve is a flexible sleeve made of polypropylene, the outer sleeve is a rigid sleeve made of modified polycarbonate, and the outer sleeve covers the inner sleeve;

the water-resisting layer is coated outside the loose tube;

the armor layer is coated outside the water blocking layer;

the sheath layer, its cladding in outside the armor, and with evenly fill between the armor has the oleamen, the internal symmetry of sheath is provided with parallel reinforcement.

2. The distal access type armored cable of claim 1, wherein the sheath layer comprises an inner sheath layer and an outer sheath layer, the inner sheath layer is a chemical rat-proof layer containing a rat repelling agent, the inner sheath layer is made of polyethylene, and the outer sheath layer is coated outside the inner sheath layer.

3. The tip-access armored fiber optic cable of claim 2, wherein the outer jacket layer is a hard protective layer of high density polyethylene.

4. A tip-access armored cable according to claim 1, wherein the jacket layer is a flame retardant layer made of a low smoke zero halogen material.

5. The tip-access armored fiber cable of claim 1, wherein the water-blocking layer is a water-blocking cable paste, a water-blocking tape, or a water-blocking yarn.

6. A tip access armored fiber optic cable as claimed in claim 1, wherein the armor has an opening cable disposed thereon.

7. A tip access armored cable according to claim 1, wherein the armor is a metal armor made of steel-plastic composite tape.

8. The armored fiber optic cable of claim 1, wherein the armor is a non-metallic armor of FRP or fiberglass.

9. A tip-access armored fiber optic cable as claimed in claim 1, wherein the strength members are metal-reinforced round rods of phosphated steel wire.

10. The armored fiber optic distal access cable of claim 1, wherein the strength members are non-metallic round rods made of FRP or fiberglass.