CN215181109U

CN215181109U - Self-supporting optical cable

Info

Publication number: CN215181109U
Application number: CN202121803975.XU
Authority: CN
Inventors: 林耀诚; 蒋传兵; 吴德兵; 余鸿文
Original assignee: Anhui Tonghua Photoelectric Co ltd
Current assignee: Anhui Tonghua Photoelectric Co ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-12-14
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a self-supporting optical cable relates to optical cable technical field, including polyethylene oversheath and polyethylene inner sheath, a fixedly connected with aramid fiber layer between polyethylene oversheath and the polyethylene inner sheath, the inside of polyethylene inner sheath is provided with a plurality of optical fiber subassembly, the week side of polyethylene oversheath is through a polyethylene connecting block fixedly connected with polyethylene side sheath, the inside of polyethylene side sheath is provided with a plurality of steel wire stranded conductor, the inside of polyethylene oversheath, polyethylene connecting block and polyethylene side sheath is inlayed and is equipped with a reinforcement assembly. The utility model provides a self-supporting optical cable through the setting on aramid fiber layer, prevents the radial cracked phenomenon of optical cable, and strengthens the setting of subassembly, has consolidated the joint strength of polyethylene oversheath with polyethylene side sheath, avoids polyethylene side sheath to break away from the polyethylene oversheath, prevents the cracked phenomenon of optical cable axial.

Description

Self-supporting optical cable

Technical Field

The utility model relates to an optical cable technical field, concretely relates to self-supporting optical cable.

Background

The self-supporting optical cable is a full-medium self-supporting optical cable, which means that a self-reinforcing component of the optical cable can bear dead weight and external load, and the name shows the use environment and the key technology of the optical cable: because of being self-supporting, the mechanical strength is light; the all-dielectric material is used because the optical cable is in a high-voltage and strong-power environment and must be resistant to the influence of strong power; because the optical cable is used on an overhead power tower, a matched hanging piece is needed to fix the optical cable on the tower, and in order to obtain good mechanical performance and environmental performance, the 8-shaped self-supporting optical cable is often used in actual use.

The utility model discloses a patent of utility model with the name of CN206311807U, the date of bulletin authorized is 2017, 07.01.7.07.A self-supporting optical cable comprises a bearing sleeve and an optical fiber sleeve, wherein the bearing sleeve is positioned right above the optical fiber sleeve, a reinforcing rope is arranged in the bearing sleeve, the bearing sleeve is fixedly connected with the optical fiber sleeve through a connecting band, a cavity is arranged in the connecting band, a first elastic part is fixedly connected with the top wall of the cavity, a second elastic part is fixedly connected with the bottom wall of the cavity, the first elastic part is contacted with the second elastic part, a waterproof layer is bonded on the inner surface of the optical fiber sleeve, an inner lining layer is arranged in the waterproof layer, a reinforcing ring is arranged outside the inner lining, the inner surface of the reinforcing ring is fixedly connected with the outer surface of the inner lining through a reinforcing rib, and the outer surface of the reinforcing ring is bonded with the inner surface of the waterproof layer, the inside of inner liner is provided with the enhancement core, the outer fixed surface of strengthening the core has cup jointed first protective sheath, the inside of inner liner still is provided with optic fibre, the outer fixed surface of optic fibre has cup jointed the second protective sheath, the inside of inner liner still is filled with the oleamen that blocks water, and it is poor to have solved current self-supporting optical cable structural strength, and the problem of easy book loss is accomodate to the curling-up.

The 8-shaped self-supporting optical cable in the prior art is usually used for electronic precision instruments, and external acting force applied to the optical cable is mostly vertically applied to the optical cable, so that the acting force applied to the internal optical fiber is too concentrated to cause fracture.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a self-supporting optical cable to solve the above-mentioned weak point among the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a self-supporting optical cable, includes polyethylene oversheath and polyethylene inner sheath, fixedly connected with aramid fiber layer between polyethylene oversheath and the polyethylene inner sheath, the inside of polyethylene inner sheath is provided with a plurality of optical fiber component, it has the cable core filler to fill between polyethylene inner sheath and the plurality of optical fiber component, the week side of polyethylene oversheath is through a polyethylene connecting block fixedly connected with polyethylene side sheath, the inside of polyethylene side sheath is provided with a plurality of steel wire stranded conductor, the inside of polyethylene oversheath, polyethylene connecting block and polyethylene side sheath is inlayed and is equipped with a reinforcement assembly.

Furthermore, the middle part of the polyethylene inner sheath is provided with a nonmetal reinforcing core, and the optical fiber assemblies are arranged on the periphery of the nonmetal reinforcing core along the circumference array.

Furthermore, the reinforcing component comprises an upper arc-shaped plate embedded on the polyethylene side sheath, one side of the upper arc-shaped plate is fixedly connected with two connecting plates embedded on the polyethylene connecting block, and one side of each connecting plate point is fixedly connected with a lower arc-shaped plate embedded on the polyethylene outer sheath.

Furthermore, buffer layers are filled between the polyethylene side sheaths and the plurality of steel wire strands.

Furthermore, the optical fiber assembly comprises a loose tube, a plurality of optical fibers are arranged in the loose tube, and a tube filler is filled between the loose tube and the plurality of optical fibers.

Furthermore, a plurality of trapezoidal grooves are formed in the circumferential side of the polyethylene outer sheath along the circumferential array, each trapezoidal groove is inserted with a rubber block, and the radial cross section of each rubber block is trapezoidal.

In the technical scheme, the utility model provides a self-supporting optical cable through the setting on aramid fiber layer, has strengthened the anti-collision performance of optical cable, has reduced the external acting force that the optical cable received, prevents the radial cracked phenomenon of optical cable, and strengthens the setting of subassembly, has consolidated the joint strength of polyethylene oversheath with polyethylene side sheath, avoids polyethylene side sheath to break away from the polyethylene oversheath, prevents the cracked phenomenon of optical cable axial.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic overall structural diagram according to an embodiment of the present invention;

fig. 2 is a side view of fig. 1 provided in accordance with an embodiment of the present invention;

fig. 3 is a cross-sectional view of the section a-a of fig. 2 according to an embodiment of the present invention;

fig. 4 is an enlarged view of a portion B of fig. 3 according to an embodiment of the present invention.

Description of reference numerals:

1. a polyethylene outer jacket; 2. a polyethylene inner sheath; 3. an aramid fiber layer; 4. a cable core filler; 5. a polyethylene connecting block; 6. a polyethylene side jacket; 7. steel wire stranding; 8. a reinforcement assembly; 801. an upper arc plate; 802. a connecting plate; 803. a lower arc-shaped plate; 9. a non-metallic reinforcement core; 10. a buffer layer; 11. loosening the sleeve; 12. an optical fiber; 13. a sleeve filler; 14. a rubber block.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

Please refer to fig. 1-4, the utility model provides a pair of self-supporting optical cable, including polyethylene oversheath 1 and polyethylene inner sheath 2, fixedly connected with aramid fiber layer 3 between polyethylene oversheath 1 and the polyethylene inner sheath 2, the inside of polyethylene inner sheath 2 is provided with a plurality of optical fiber assembly, it has cable core filler 4 to fill between polyethylene inner sheath 2 and the plurality of optical fiber assembly, the week side of polyethylene oversheath 1 is through a polyethylene connecting block 5 fixedly connected with polyethylene side sheath 6, the inside of polyethylene side sheath 6 is provided with a plurality of steel wire stranded conductor 7, polyethylene oversheath 1, the inside of polyethylene connecting block 5 and polyethylene side sheath 6 is inlayed and is equipped with a reinforcement assembly 8.

Specifically, the self-supporting optical cable provided by the embodiment is used for providing an 8-shaped self-supporting optical cable which has good impact resistance, high mechanical strength and is not easy to break in the axial direction and the radial direction.

The main point of this embodiment is that the polyethylene has good resistance to ultraviolet radiation, and the aramid layer 3 is made of aramid fiber, which generally refers to aramid fiber, and has high impact resistance, high wear resistance, high chemical resistance, and high thermal degradation resistance.

The embodiment of the utility model provides a self-supporting optical cable through aramid fiber layer 3's setting, has strengthened the anti-collision performance of optical cable, has reduced the external force that the optical cable received, prevents the radial cracked phenomenon of optical cable from appearing, and strengthens the setting of subassembly 8, has consolidated the joint strength of polyethylene oversheath and polyethylene side sheath, avoids polyethylene side sheath to break away from the polyethylene oversheath, prevents the cracked phenomenon of optical cable axial.

The utility model provides a further embodiment, the middle part of polyethylene inner sheath 2 is provided with a nonmetal reinforced core 9, and a plurality of optical fiber assembly arranges in the week side of nonmetal reinforced core 9 along the circumference array. The non-metal reinforced core 9 is made of non-metal materials, has certain deformation resistance and can be recovered after being bent.

The utility model provides a still another embodiment, it is further, strengthen subassembly 8 includes one inlays the last arc 801 of establishing on polyethylene side sheath 6, goes up one side fixedly connected with two connecting plates 802 of establishing on polyethylene connecting block 5 of arc 801, and two connecting plates 802 point one side fixedly connected with one inlays the lower arc 803 of establishing on polyethylene oversheath 1. Go up the arc 801 for the arc with polyethylene side sheath 6 looks adaptation, lower arc 803 is the arc with polyethylene oversheath 1 looks adaptation, two connecting plates 802 are used for connecting arc 801 and lower arc 803, and two

connecting plates

802 and 5 looks adaptations of polyethylene connecting block, and the overall structure mechanical strength of reinforcement subassembly 8 is higher, guarantees the stability of being connected between polyethylene oversheath 1 and the polyethylene side sheath 6, avoids polyethylene side sheath 6 to break away from polyethylene oversheath 1.

In another embodiment, a buffer layer 10 is filled between the polyethylene side sheath 6 and the plurality of steel wire strands 7. The buffer layer 10 is arranged to effectively reduce the shaking of the steel wire stranded wires 7, one of the steel wire stranded wires 7 is located in the middle of the polyethylene side sheath 6, the rest of the steel wire stranded wires 7 are distributed on the peripheral side of one of the steel wire stranded wires 7 along the circumferential array, the structure is stable, and the steel wire stranded wires 7 meet the requirement of extremely high tensile strength as self-supporting pieces.

The utility model provides a still another embodiment, it is further, optical fiber assembly includes loose tube 11, and the inside of loose tube 11 is provided with a plurality of optic fibre 12, and it has sleeve pipe filler 13 to fill between loose tube 11 and a plurality of optic fibre 12. The loose tube 11 is made of high modulus PBT material, has good hydrolysis resistance and high strength, contains the optical fiber 12, and the filled tube filler 13 is a waterproof compound to ensure the water resistance of the optical cable.

The utility model provides a further embodiment, furtherly, polyethylene oversheath 1 week side has seted up a plurality of trapezoidal recess along the circumference array, and every trapezoidal recess all pegs graft and has a block rubber 14, and the radial cross-section of block rubber 14 is trapezoidal. The rubber block 14 is clamped in the polyethylene outer sheath 1, the polyethylene outer sheath 1 cannot be separated, the rubber block 14 can protect the optical cable, abrasion between the optical cable and the outside is reduced, the service life of the optical cable is prolonged, and the outward surface of the rubber block 14 is an arc-shaped surface and is smaller than an external contact surface.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. A self-supporting optical cable is characterized by comprising a polyethylene outer sheath (1) and a polyethylene inner sheath (2), wherein an aramid fiber layer (3) is fixedly connected between the polyethylene outer sheath (1) and the polyethylene inner sheath (2), a plurality of optical fiber components are arranged inside the polyethylene inner sheath (2), and cable core fillers (4) are filled between the polyethylene inner sheath (2) and the optical fiber components;

the side of the polyethylene outer sheath (1) is fixedly connected with a polyethylene side sheath (6) through a polyethylene connecting block (5), a plurality of steel wire strands (7) are arranged in the polyethylene side sheath (6), and a reinforcing component (8) is embedded in the polyethylene outer sheath (1), the polyethylene connecting block (5) and the polyethylene side sheath (6).

2. A self-supporting optical cable according to claim 1, wherein the polyethylene inner sheath (2) is provided with a non-metallic core (9) at a central portion thereof, and a plurality of the optical fiber assemblies are arranged in a circumferential array around the non-metallic core (9).

3. The self-supporting optical cable according to claim 1, wherein the reinforcing component (8) comprises an upper arc plate (801) embedded in the polyethylene side sheath (6), two connecting plates (802) embedded in the polyethylene connecting block (5) are fixedly connected to one side of the upper arc plate (801), and a lower arc plate (803) embedded in the polyethylene outer sheath (1) is fixedly connected to one side of the two connecting plates (802).

4. Self-supporting optical cable according to claim 1, characterized in that a buffer layer (10) is filled between the polyethylene side jacket (6) and the plurality of steel strands (7).

5. Self-supporting optical cable according to claim 1, wherein the optical fiber assembly comprises a loose tube (11), the loose tube (11) being provided with a number of optical fibers (12) inside, and a tube filler (13) being filled between the loose tube (11) and the number of optical fibers (12).

6. The self-supporting optical cable according to claim 1, wherein the polyethylene outer sheath (1) is circumferentially provided with a plurality of trapezoidal grooves along the circumferential side, each trapezoidal groove is inserted with a rubber block (14), and the radial cross section of the rubber block (14) is trapezoidal.