CN213659043U

CN213659043U - Double-core field armored optical cable

Info

Publication number: CN213659043U
Application number: CN202022714379.6U
Authority: CN
Inventors: 王维亚; 徐颖; 刘述权; 张亚闪
Original assignee: Kunshan Spectrum Electronic Technology Co ltd
Current assignee: Kunshan Spectrum Electronic Technology Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-07-09
Anticipated expiration: 2030-11-20

Abstract

The utility model relates to a two-core field armored optical cable, including the cable core, the cable core is including the reinforcement, and the both sides of reinforcement are provided with optic fibre, and the outside parcel of optic fibre has the layer of tightly covering, and the outer parcel of cable core has around the covering, has the inner sheath around the outer parcel of covering, and the outer parcel of inner sheath has the armor, and the outer parcel of armor has the oversheath, and the reinforcement is two piece at least glass fiber stick contact arrangement constitutions enclose the fender structure, glass fiber stick with around the contact of covering inner wall. Thus, the reinforcement is formed with two glass fibers, and the two-core tight-buffered optical fiber is placed with the gap between the two fibers and the inner jacket. Through the cooperation of reinforcement and armor, the effective dispersion atress ensures that cable pulling force evenly distributed to every unit, and the structure is more stable, and the additional decay of optic fibre is less than 0.1dB under the 100kg tensile force. The symmetrical structure of the whole section is realized, and additional attenuation of less than 0.1dB after 3000 times of winding tests can be realized.

Description

Double-core field armored optical cable

Technical Field

The utility model relates to an optical cable especially relates to an open-air armor optical cable of two cores.

Background

The idea of the existing optical cable design is that optical fiber can not receive the external force, so the protection to the optical fiber is either made into a sleeve, or is tightly packaged and then made into a plastic sleeve by adopting aramid fiber filling, and the other one is that the sleeve adopting a spiral steel pipe is used for protection, so the optical fiber can not bear the force on the whole, and can not contact with an object with the external acting force, so the optical fiber can not bear the force by a loose structure fundamentally. This structure is possible when we do the fixed laying.

With reference to the prior art: patent number CN202210187U open-air emergent optical cable, patent number CN202057848U open-air emergent optical cable, patent number CN209102963U field operations optical cable, CN208861035U novel field operations optical cable see, the armor optical cable that the field usage need frequent tensile receive and release, ground friction, probably the car even rolls service behavior such as the use, loose structural design has brought the uncertainty of using, the reliability and the uniformity of product can not obtain fine assurance.

In view of the above-mentioned defects, the designer actively makes research and innovation to create a dual-core field armored optical cable, which has industrial value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a two-core field armor optical cable.

The utility model discloses a two-core field armored optical cable, including the cable core, wherein: the cable core is including the reinforcement, the both sides of reinforcement are provided with optic fibre, the outside parcel of optic fibre has the layer of stiching, the outer parcel of cable core has around the covering, the outer parcel of covering has the inner sheath, the outer parcel of inner sheath has the armor, the armor wraps up outward has the oversheath, the reinforcement is the fender structure that encloses that two piece at least glass fiber stick contact range constitutes, glass fiber stick with around the contact of covering inner wall.

Further, in the above dual-core field armored optical cable, the tightly-clad layer is a nylon coiled structure, and a contact gap is provided between the nylon coiled structure and the reinforcing member.

Furthermore, in the above dual-core field armored optical cable, the contact gap is filled with cotton; or, the contact gap is filled with a polypropylene belt.

Furthermore, in the dual-core field armored optical cable, the wrapping layer is formed by surrounding non-woven fabrics or polyester tapes.

Further, the dual-core field armored cable described above, wherein the inner sheath is a polyvinyl chloride sheath (PVC); or a polyethylene sheath (PE); or a low smoke zero halogen sheath (LSZH); or a polyurethane jacket (PU).

Furthermore, in the above dual-core field armored optical cable, the armor layer is formed by surrounding a steel wire braid layer.

Further, the above-mentioned dual-core field armored cable, wherein the outer sheath is a polyurethane sheath (PU).

Still further, the double-core field armored optical cable is characterized in that the outer diameter of the optical fiber is 0.6-0.9 mm, the diameter of the glass fiber rod is 1-1.8 mm, and the diameter of the tight cladding layer is 0.6-0.9 mm.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:

1. two glass fibers are used to form the strength member, and the two-core tight-buffered optical fiber is placed by the gap between the two fibers and the inner jacket.

2. Through the cooperation of reinforcement and armor, the effective dispersion atress ensures that cable pulling force evenly distributed to every unit, and the structure is more stable, and the additional decay of optic fibre is less than 0.1dB under the 100kg tensile force.

3. The steel wire braided armor structure and the inner sheath buffer structure are combined with each other, the deformation strain of the optical fiber under the condition of lateral pressure resistance is reduced, and the additional attenuation of the optical fiber under the lateral pressure of 200kg (10cm) is less than 0.1 dB.

4. The symmetrical structure of the whole section is realized, and additional attenuation of less than 0.1dB after 3000 times of winding tests can be realized.

5. The excellent temperature characteristic of the nylon tightly-packed material and the stability design of the cable joint can meet the temperature range of minus 40 ℃ to plus 80 ℃.

6. The whole structure that the middle of the double-layer sheath is the braided armor is adopted, so that the requirements of different use environments such as direct laying, overhead construction, direct burying and even river water soaking of the cable in the field are met.

7. The polyurethane is used as the sheath, so that the flexibility of the cable is ensured, the vulcanization construction is conveniently carried out on the use site, and the applicability and the maintainability of the cable are improved.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a two-core field armored cable.

The meanings of the reference symbols in the drawings are as follows.

1 strength member 2 optical fiber

3 tightly-covered layer and 4 wrapped layer

5 inner sheath 6 armor layer

7 outer jacket 8 contact gap

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The double-core field armored optical cable shown in figure 1 comprises a cable core, and is characterized in that: in order to bear the external force caused by pulling, the cable core comprises a reinforcing piece, optical fibers are arranged on two sides of the reinforcing piece, and the outer side of each optical fiber is wrapped with a tight wrapping layer. Therefore, a double-core structure is formed, and the cable core has a better anti-deformation bearing effect. In order to realize multi-level surrounding protection, the cable core is wrapped with a wrapping layer, the wrapping layer is wrapped with an inner sheath, and the inner sheath is wrapped with an armor layer, so that the deformation resistance is further strengthened. Simultaneously, the outer sheath that has wrapped up outside the armor promotes wear-resisting effect. In addition, in order to avoid the direct action of external improper acting force on the optical fiber and realize proper stress bearing and transmission, the reinforcing piece is an enclosing structure formed by at least two glass fiber rods in contact arrangement, and the glass fiber rods are in contact with the inner wall of the wrapping layer.

In combination with the preferred embodiment of the present invention, in order to ensure unnecessary twisting and sliding of the outgoing line, the proper positioning is achieved, the tight wrapping layer is a nylon crimp structure, and a contact gap is provided between the nylon crimp structure and the reinforcement. Meanwhile, aiming at the needs of certain outdoor laying, the compact arrangement structure can be realized to realize comprehensive internal filling, and the contact gap is filled with cotton threads. Or, the contact gap is filled with a polypropylene tape.

Further, the wrapping layer is formed by surrounding non-woven fabrics or polyester tapes. Therefore, after actual winding is finished, the winding machine has a compact internal structure. Meanwhile, in order to realize proper pressure-resistant protection, the adopted inner sheath is a polyvinyl chloride (PVC) sheath. Of course, considering different environmental applications, a polyethylene sheath (PE), a low smoke zero halogen sheath (LSZH), or a polyurethane sheath (PU) may also be used. Of course, other conventional thermoplastic cable jacket materials may be employed.

Further see again, in order to promote holistic intensity, possess the resistant extrusion effect of better anti deformation, the armor surrounds for the steel wire weaving layer and constitutes. During the actual implementation, the method can be finished by adopting galvanized steel wires and stainless steel wires. Meanwhile, the weaving density is controlled to be between 60% and 90%.

Meanwhile, in order to meet the requirement of external wear resistance, the adopted outer sheath is a polyurethane sheath (PU). The preparation can be carried out by extrusion.

In connection with practical implementation, the outer diameter of the optical fiber is 0.6 to 0.9mm, the diameter of the glass fiber rod is 1 to 1.8mm, and the diameter of the tight cladding layer is 0.6 to 0.9 mm. Specifically, when the outer diameter of the optical fiber unit is 0.9mm in consideration of the manufacturing requirements of different specifications, the size of a glass Fiber Rod (FRP) is selected to be 1.5mm to 1.8mm, and then the FRP is wrapped with a non-woven fabric or a polyester tape and fixed. When the outer diameter of the optical fiber unit is 0.6mm, the size of a glass Fiber Rod (FRP) is 1.0 mm-1.2 mm, and then non-woven fabrics or polyester tapes are wrapped and fixed.

Through foretell expression of characters and combination of the attached drawing can be seen, adopt the utility model discloses afterwards, possess following advantage:

Furthermore, the indication directions or positional relationships described in the present invention are directions or positional relationships based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the indicated device or structure must have a specific direction or operate in a specific directional configuration, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "disposed" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other or mutually interacted. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. And it may be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or component so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. Open-air armoured optical cable of two cores, including the cable core, its characterized in that: the cable core is including the reinforcement, the both sides of reinforcement are provided with optic fibre, the outside parcel of optic fibre has the layer of stiching, the outer parcel of cable core has around the covering, the outer parcel of covering has the inner sheath, the outer parcel of inner sheath has the armor, the armor wraps up outward has the oversheath, the reinforcement is the fender structure that encloses that two piece at least glass fiber stick contact range constitutes, glass fiber stick with around the contact of covering inner wall.

2. The two-core field armored cable of claim 1, wherein: the tight cladding layer is nylon convolution, be provided with the contact clearance between nylon convolution and the reinforcement.

3. The two-core field armored cable of claim 2, wherein: cotton threads are filled in the contact gaps; or, the contact gap is filled with a polypropylene belt.

4. The two-core field armored cable of claim 1, wherein: the wrapping layer is formed by surrounding non-woven fabrics or polyester tapes.

5. The two-core field armored cable of claim 1, wherein: the inner sheath is a polyvinyl chloride sheath; or a polyethylene sheath; or is a low-smoke halogen-free sheath; or a polyurethane sheath.

6. The two-core field armored cable of claim 1, wherein: the armor layer is formed by surrounding a steel wire braid layer.

7. The two-core field armored cable of claim 1, wherein: the outer sheath is a polyurethane sheath.

8. The two-core field armored cable of claim 1, wherein: the outer diameter of the optical fiber is 0.6-0.9 mm, the diameter of the glass fiber rod is 1-1.8 mm, and the diameter of the tight cladding layer is 0.6-0.9 mm.