CN210051941U

CN210051941U - Detection optical cable suitable for underwater environment

Info

Publication number: CN210051941U
Application number: CN201921088111.7U
Authority: CN
Inventors: 吕政鸿
Original assignee: DONGJIE OPTICAL TECHNOLOGY (SUZHOU) Co Ltd
Current assignee: DONGJIE OPTICAL TECHNOLOGY (SUZHOU) Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-02-11
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a detection optical cable suitable for underwater environment, which comprises a cable core layer, a belt, an inner sheath, a first aramid fiber layer, a first non-woven fabric layer, a second aramid fiber layer, a second non-woven fabric layer and an outer sheath from inside to outside in sequence; the cable core layer includes the reinforcement of locating the center and encircles the tight package optic fibre that sets up along the reinforcement periphery, tight package optic fibre includes fibre core, covering, coating from inside to outside in proper order. The utility model discloses the external diameter is little, light in weight, compliance are good, tensile strength is big, is suitable for the quick convenient cloth of environment under water to can satisfy the operational requirement.

Description

Detection optical cable suitable for underwater environment

Technical Field

The utility model relates to an optical cable technical field specifically is a detection optical cable suitable for environment under water.

Background

In some underwater environments such as deep sea information systems, optical cables are required to be used for underwater detection and acousto-optic communication, and the functions of establishing an information transmission channel and bearing tensile strength are achieved. Because the deep sea information system is located under water, the node of the deep sea information system requires that the volume of the connecting optical cable cannot be too large, the special requirements of quick and convenient laying can be met, meanwhile, the optical cable is not only required to bear the influences of the dead weight, bending and other acting forces of the optical cable in the laying process when used in an underwater environment, but also required to meet the long-term normal working requirements, and the existing optical cable has large outer diameter, heavy weight and poor bending performance, so that the working requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a detection optical cable suitable for environment under water, the external diameter is little, light in weight, compliance are good, tensile strength is big, is suitable for the quick convenient cloth of environment under water to can satisfy the work requirement.

In order to achieve the above object, the utility model provides a following technical scheme: a detection optical cable suitable for an underwater environment sequentially comprises a cable core layer, a wrapping tape, an inner sheath, a first aramid fiber layer, a first non-woven fabric layer, a second aramid fiber layer, a second non-woven fabric layer and an outer sheath from inside to outside; the cable core layer includes the reinforcement of locating the center and encircles the tight package optic fibre that sets up along the reinforcement periphery, tight package optic fibre includes fibre core, covering, coating from inside to outside in proper order. The coating layer is designed on the outermost side of the tightly packaged optical fiber, so that the influence of partial environmental stress on the transmission performance of the optical fiber by the contraction of the tightly packaged material is buffered and absorbed. The multilayer structure is arranged between the inner sheath and the outer sheath, so that the lateral pressure borne by the optical cable in the use process can be improved, and the pressure received in the optical cable is reduced.

Further perfecting the technical scheme, the inner sheath and the outer sheath are both made of polyether polyurethane. The polyether polyurethane has the advantages of both plastics and rubber, and has the characteristics of high tensile strength, good wear resistance, excellent low-temperature performance, thermal stability, light stability, excellent hydrolysis resistance, chemical resistance, mold resistance and the like.

Further, the number of the tightly-packed optical fibers is 10.

Further, the diameter of the tightly packaged optical fiber is 0.4-0.5 mm, and the outer diameter of the packaging belt is 1.8-2.0 mm; the outer diameter of the inner sheath is 2.6-2.8 mm; the outer diameter of the first non-woven fabric layer is 4.2-4.6 mm; the outer diameter of the second non-woven fabric layer is 6.4-6.8 mm; the outer diameter of the outer sheath is 8.4-9.0 mm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of small external diameter, light weight, good flexibility, and can realize the construction requirements of reducing the storage space and being suitable for fast and convenient laying of underwater environment; the integral performance has the characteristics of high tensile strength, water pressure resistance, corrosion resistance, zero buoyancy and the like, and is suitable for the working requirement of the underwater environment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the utility model provides a detection optical cable suitable for underwater environment, including tightly package optic fibre, central reinforcement 11, band 7, inner sheath 6, first aramid fiber layer 5, first non-woven fabrics layer 4, second aramid fiber layer 3, second non-woven fabrics layer 2, oversheath 1, tightly package optic fibre includes fibre core 10, covering 9, coating 8 from inside to outside in proper order. The diameter of the tightly packaged optical fiber is 0.4-0.5 mm, and the outer diameter of the packaging belt 7 is 1.8-2.0 mm; the outer diameter of the inner sheath 6 is 2.6-2.8 mm; the outer diameter of the first non-woven fabric layer 4 is 4.2-4.6 mm; the outer diameter of the second non-woven fabric layer 2 is 6.4-6.8 mm; the outer diameter of the outer sheath 1 is 8.4-9.0 mm.

Because the optical fiber is fragile and sensitive to environmental stress, the coating layer 8 is designed on the outermost side of the tightly packaged optical fiber, so that the influence of partial environmental stress on the optical fiber is buffered and absorbed, and the contraction of the tightly packaged material is improved. The coating layer adopts a coating material with the advantages of fast curing, low elastic modulus, excellent stripping performance and the like.

The aramid fiber is imported from 10 strands of 1100D aramid fiber, large-area aramid fiber provides extremely high mechanical strength for the optical cable, the tensile strength reaches 2000N, and the optical cable can bear the weight and the weight of 200 KG; the product has the characteristics of low density, high strength, high modulus, low elongation at break and the like; by twisting a plurality of strands of aramid fibers, the tensile strength, tensile modulus and elongation at break of the aramid fibers are improved, so that the optical fibers are effectively protected from being influenced by environmental stress, and the optical cable is ensured to work stably and reliably in the using process.

The inner sheath 6 and the outer sheath 1 are made of polyether polyurethane, have the advantages of plastics and rubber, and have the characteristics of high tensile strength, good wear resistance, excellent low-temperature performance, thermal stability, light stability, excellent hydrolysis resistance, chemical resistance, mould resistance and the like.

The preparation process of the utility model is as follows: first, a cladding is uniformly extruded around the core and a coating is applied to form a tight-buffered fiber, which is then subjected to color separation. Secondly, 10 tightly-wrapped optical fibers are uniformly stranded around a central reinforcing part 11 through a cabling process, so that the optical cable structure is more stable, and meanwhile, a layer of wrapping tape 7 is wrapped to form a cable core. Then, the tightly-packed optical fibers are uniformly twisted and wrapped with the inner sheath 6 outside the cable core made by wrapping the layer of wrapping tape 7, so that the situation that the tightly-packed optical fibers are loose due to damage of the 7 layers of the outer wrapping tape of the tightly-packed optical fibers can be avoided in the actual use process, and the optical cable structure is more stable and reliable. Meanwhile, in order to improve the lateral pressure born by the optical cable in the using process and reduce the pressure received in the optical cable, a first aramid fiber layer 5 is uniformly stranded around the inner sheath 6, and a first non-woven fabric layer 4 is wrapped; evenly strand one deck second aramid fiber layer 3 around first non-woven fabrics layer 4, wrap second non-woven fabrics layer 2 simultaneously. Finally, an outer sheath 1 is extruded outside the second non-woven fabric layer 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A detection optical cable suitable for underwater environment, characterized in that: the cable comprises a cable core layer, a belt, an inner sheath, a first aramid fiber layer, a first non-woven fabric layer, a second aramid fiber layer, a second non-woven fabric layer and an outer sheath in sequence from inside to outside; the cable core layer includes the reinforcement of locating the center and encircles the tight package optic fibre that sets up along the reinforcement periphery, tight package optic fibre includes fibre core, covering, coating from inside to outside in proper order.

2. A probe cable adapted for use in an underwater environment according to claim 1, wherein: the inner sheath and the outer sheath are both made of polyether polyurethane.

3. A probe cable adapted for use in an underwater environment according to claim 1, wherein: the number of the tightly packaged optical fibers is 10.

4. A probe cable adapted for use in an underwater environment according to claim 1, wherein: the diameter of the tightly packaged optical fiber is 0.4-0.5 mm, and the outer diameter of the packaging belt is 1.8-2.0 mm; the outer diameter of the inner sheath is 2.6-2.8 mm; the outer diameter of the first non-woven fabric layer is 4.2-4.6 mm; the outer diameter of the second non-woven fabric layer is 6.4-6.8 mm; the outer diameter of the outer sheath is 8.4-9.0 mm.