CN211627903U - High-fiber-core-density optical cable with higher space utilization rate - Google Patents
High-fiber-core-density optical cable with higher space utilization rate Download PDFInfo
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- CN211627903U CN211627903U CN202020646977.1U CN202020646977U CN211627903U CN 211627903 U CN211627903 U CN 211627903U CN 202020646977 U CN202020646977 U CN 202020646977U CN 211627903 U CN211627903 U CN 211627903U
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Abstract
The utility model belongs to the technical field of electric power and optical cables, and relates to a high fiber core density optical cable with higher space utilization rate, which is provided with a reinforcement, a special-shaped loose tube, a protective layer and an outer sheath; the method is characterized in that: the special-shaped loose tube has a special shape; the second plane of the last special-shaped loose tube in the optical cable is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder and spliced into a complete cylinder, and the reinforcing parts are tightly attached to the inner side faces of all the special-shaped loose tubes. The utility model discloses following main beneficial effect has: the product has smaller diameter, is easier to manufacture, does not need cabling and stranding equipment, consumes less material, has lower cost and is quicker to manufacture.
Description
Technical Field
The utility model belongs to the technical field of electric power and optical cable, especially, relate to a higher high fibre core density optical cable of space utilization.
Background
In the prior art, a layer stranded optical cable, such as the communication industry standard YD/T901 of the people's republic of china, adopts a mode that a central reinforcement and a plurality of loose tubes are stranded around the central reinforcement, and in this mode, gaps are formed among the loose tubes and between the loose tubes and the reinforcement, so that on one hand, fillers are adopted for filling, on the other hand, the space is wasted, and the space utilization rate of the product is low; the density of the fiber core is not large; on the other hand, with the increase of the number of the loose tubes, the diameter of the reinforcing part is increased, the diameter of the cable core is increased, and material consumption and cost of the product are reduced.
In the prior art, a large-core multi-layer stranded optical cable is realized by adopting a multi-layer structure, and in order to ensure that products are tangent, loose tubes between different layers have different sizes, so that the management is troublesome, unnecessary diameter is increased, and the like; moreover, SZ stranding requires a large site, expensive equipment investment, maintenance and management costs for equipment, worker investment for equipment, lighting investment required for work, power investment required for equipment operation, and the like; it is extremely uneconomical.
In the skeleton-type optical cable in the prior art, such as the standard YD/T981.1-2009 in the communication industry of the people's republic of China, a skeleton is positioned at the outer edge of a skeleton groove and is sunken towards the center of the skeleton, the bottom surfaces of the skeleton grooves of an optical fiber ribbon are upwards and sequentially stacked, the length of the optical fiber ribbon is greater than the width according to the optical fiber ribbon standard recommended by the country, and in the skeleton-type optical cable, the length surface of the optical fiber ribbon is stacked on the bottom surface of the skeleton groove or is parallel to the bottom; the stability of the optical cable can be ensured only by sealing the opening of the framework groove, so that the optical fiber ribbon does not escape from the framework groove; after stripping, measures are adopted as required to seal the openings of the framework grooves, so that the operation is relatively complicated.
CN210005762U discloses an embedded optical cable, which has a plurality of loose tubes, a reinforcing layer is arranged outside the loose tubes, an outer protective layer is extruded outside the reinforcing layer, and at least one optical communication component is arranged inside the loose tube; the fiber accommodating device is characterized in that the loose tube is fan-shaped and comprises a loose tube main body, a clamping unit and a clamping rib, a fiber accommodating cavity is formed in the loose tube main body, one end of the clamping rib is connected with one straight edge of the loose tube main body, the other end of the clamping rib is connected with the clamping unit, a clamping groove and a rib accommodating groove are formed in the loose tube main body at the corresponding position of one side of the other straight edge, the clamping unit of the previous loose tube is embedded into the clamping groove of the next loose tube, and the clamping unit of the last loose tube is embedded into the clamping groove of the first loose tube; the problem that the universality of the sizes of loose tubes with different core numbers in the same optical cable is poor is solved; the novel sleeve has the beneficial effects of simple structure, convenience in processing, good universality of the sleeve and the like.
CN208833968U discloses a dry-type fan-shaped tube layer stranded optical cable, which includes a central reinforcement, a plurality of loose tubes with fan-shaped cross sections, the loose tubes are spliced with each other and coated on the periphery of the central reinforcement to form a circular cable core, a water blocking tape is coated outside the cable core, an outer sheath is coated outside the water blocking tape, water blocking fibers are filled in the loose tubes, and a plurality of optical fibers are arranged in each loose tube. The utility model discloses a fan-shaped loose tube is structurally more inseparable, between loose tube and the loose tube, and the space between loose tube and the galvanized steel wire is very little, is 0 in theory, has improved in the structural accuracy, and the diameter of optical cable is littleer under the same core number to the cost has also been practiced thrift from raw and other materials simultaneously to the utilization ratio that has improved limited pipeline space.
CN208045171U discloses an optical fiber composite low-voltage power cable, which comprises a supporting sleeve body, wherein an external shielding layer, an external waterproof layer and an external protective sleeve are sequentially arranged on the outer side of the supporting sleeve body from inside to outside, and a wear-resistant layer is embedded in the outer surface of the external protective sleeve; reinforcing wires are embedded in the supporting sleeve body, a fan-shaped cavity and a circular cavity are arranged in the supporting sleeve body, and the fan-shaped cavity is uniformly distributed on the outer side of the circular cavity; the fan-shaped cavity is internally provided with electric units, a filling layer is arranged between the electric units, and the circular cavity is internally provided with an optical unit. Has the advantages that: the waterproof effect is achieved through the external waterproof layer, the first internal waterproof layer and the second internal waterproof layer, the waterproof performance is good, and the long-time use requirement is met; through setting up the supporting sleeve body, and at the inside reinforcing wire that imbeds of supporting sleeve body, can improve cable bulk strength, prevent to cause the damage of bending under the exogenic action, help improving cable life.
None of the above-disclosed documents solves the above-mentioned technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention discloses an optical cable with high fiber core density and high space utilization rate, which is implemented by the following technical solution.
A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, six special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose tube is composed of a closed tube body, the outer side surface of the outer wall of the tube body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the tube body is a part of the surface of a first cylinder, the outer surface of the left side wall of the tube body is a first plane, the outer surface of the right side wall of the tube body is a second plane, a fiber accommodating cavity is formed in the tube body, a plurality of optical fibers are arranged in the fiber accommodating cavity, the axis of the first cylinder is coincident with the axis of the second cylinder and is called as a central axis, the intersecting line of the first plane and the second plane deviates from the central axis, the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The optical cable with higher space utilization rate and high fiber core density is characterized in that the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta, which are both 60 degrees.
A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, four special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose tube is composed of a closed tube body, the outer side surface of the outer wall of the tube body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the tube body is a part of the surface of a first cylinder, the outer surface of the left side wall of the tube body is a first plane, the outer surface of the right side wall of the tube body is a second plane, a fiber accommodating cavity is formed in the tube body, a plurality of optical fibers are arranged in the fiber accommodating cavity, the axis of the first cylinder is coincident with the axis of the second cylinder and is called a central axis, the first plane and the second plane are intersected at the central axis, the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The optical cable with higher space utilization rate and high fiber core density is characterized in that the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta, which are both 90 degrees.
A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, a plurality of special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve is composed of a closed sleeve body, the outer side surface of the outer wall of the sleeve body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the sleeve body is a part of the surface of a first cylinder, the outer surface of the left side wall of the sleeve body is a first curved surface, the outer surface of the right side wall of the sleeve body is a second curved surface, a fiber containing cavity is formed in the sleeve body, a plurality of optical fibers are arranged in the fiber containing cavity, the axis of the first cylinder is coincident with the axis of the second cylinder and is called as a central axis, the first curved surface protrudes towards the left side, and the second curved surface is recessed towards the direction of the fiber containing cavity;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing part along the circumferential direction, in the clockwise direction, the second curved surface of the previous special-shaped loose tube is tightly attached to the first curved surface of the next special-shaped loose tube, the second curved surface of the last special-shaped loose tube is tightly attached to the first curved surface of the first special-shaped loose tube, the outer side surfaces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side surfaces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing part is tightly attached to the inner side surfaces of all the special-shaped loose tubes.
A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, a plurality of special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve is composed of a closed sleeve body, the outer side surface of the outer wall of the sleeve body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the sleeve body is a part of the surface of a first cylinder, the outer surface of the left side wall of the sleeve body is a first plane, the outer surface of the right side wall of the sleeve body is a second plane, a fiber containing cavity is arranged in the sleeve body, a plurality of optical fiber ribbons are arranged in the fiber containing cavity, each optical fiber ribbon is internally provided with a plurality of optical fibers, the axis of the first cylinder is superposed with the axis of the second cylinder and is called as a central axis, the intersection line of the first plane and the second plane deviates from the central axis, the central angle of the inner side surface is equal to that of the outer side surface, and the included angle between, the fiber containing cavity is approximately cuboid, the optical fiber ribbons are distributed in the fiber containing cavity in a laminating mode, and the length direction of the optical fiber ribbons is parallel to the length direction of the fiber containing cavity;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The length of the cuboid is approximately parallel to the first plane and the second plane.
A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, a plurality of special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve is composed of a closed sleeve body, the outer side surface of the outer wall of the sleeve body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the sleeve body is a part of the surface of a first cylinder, the outer surface of the left side wall of the sleeve body is a first plane, the outer surface of the right side wall of the sleeve body is a second plane, a fiber containing cavity is arranged inside the sleeve body, a plurality of optical fiber ribbons are arranged in the fiber containing cavity, a plurality of optical fibers are arranged in each optical fiber ribbon, a power hole is arranged on the sleeve body between the fiber containing cavity and the inner side surface of the inner wall of the sleeve body, an insulated wire is arranged in the power hole, the axis of the first cylinder is coincident with the axis of the second cylinder and is called as a central axis, the intersection line of the first plane and the second plane deviates from the central axis, the central angle of the inner side surface is equal to that, the optical fiber ribbon is distributed in the fiber accommodating cavity in a stacking mode, and the optical fiber ribbon is stacked from one waist of the fiber accommodating cavity to the other waist in the length direction;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The upper and lower bottom surfaces of the trapezoid are approximately perpendicular to the first plane and the second plane.
A high fiber core density optical cable with higher space utilization rate is provided with a reinforcing member, a cushion layer covering the reinforcing member, a plurality of special-shaped loose tubes positioned outside the cushion layer, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve is composed of a closed sleeve body, the outer side surface of the outer wall of the sleeve body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the sleeve body is a part of the surface of a first cylinder, the outer surface of the left side wall of the sleeve body is a first plane, the outer surface of the right side wall of the sleeve body is a second plane, a fiber containing cavity is formed inside the sleeve body, a plurality of optical fiber ribbons are arranged in the fiber containing cavity, each optical fiber ribbon is internally provided with a plurality of optical fibers, the axis of the first cylinder is superposed with the axis of the second cylinder and is called as a central axis, the first plane and the second plane are intersected at the central axis, the central angle of the inner side surface is beta, the central angle of the outer side surface is beta, the fiber containing cavity is approximately in the shape of a trapezoid cylinder, the lower bottom surface of the trapezoid cylinder is close to the outer side surface, the optical fiber ribbons are stacked from one waist of the optical fiber cavity to the other waist in the length direction;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the outside of the cushion layer along the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side surfaces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side surfaces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing parts are tightly attached to the inner side surfaces of all the special-shaped loose tubes.
The upper and lower bottom surfaces of the trapezoid are approximately perpendicular to the first plane and the second plane.
A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, a plurality of special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve is composed of a closed sleeve body, the outer side surface of the outer wall of the sleeve body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the sleeve body is a part of the surface of a first cylinder, the outer surface of the left side wall of the sleeve body is a first plane, the outer surface of the right side wall of the sleeve body is a second plane, a fiber containing cavity is arranged inside the sleeve body, a plurality of optical fiber ribbons are arranged in the fiber containing cavity, each optical fiber ribbon is provided with a plurality of optical fibers, the axis of the first cylinder is superposed with the axis of the second cylinder and is called as a central axis, the first plane and the second plane are intersected at the central axis, the central angle of the inner side surface is beta, the central angle of the outer side surface is beta, the fiber containing cavity is cuboid-shaped, the lower bottom surface of the cuboid is close to the outer side surface of the outer wall, the optical fiber ribbons are stacked from one bottom surface of the optical fiber cavity to the other bottom surface in the length direction;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The length direction of the cuboid is approximately parallel to the first plane and the second plane.
The fiber accommodating cavity can also be in a cylinder shape with a parallelogram cross section, and the length direction of the parallelogram cross section is approximately parallel to the first plane and the second plane.
A high core density optical cable with improved space utilization, substantially as hereinbefore described, with the following differences: the left side surface, namely the upper side surface, of the special-shaped loose tube is empty, namely, a fiber accommodating cavity is opened to the left side surface or the upper side surface of the special-shaped loose tube, and the optical fiber ribbon or the optical fiber is placed in the fiber accommodating cavity; further, insulated wires can be placed.
Further, the opening, i.e. the size of the opening, on the left or upper side of the profiled loose tube is only a part, not as large as in the figure, only allowing insertion of optical fibers or optical fiber ribbons or insulated conductors, normally without escaping through the opening.
In this application, the skew central axis of intersection line on first plane and second plane not only makes special-shaped loose tube keep special-shaped, still makes asymmetric structure also can completely splice into cylindrical cable core.
In the present application, the number of the special-shaped loose tubes is not limited to the embodiment, and may be a plurality of the special-shaped loose tubes, or n, where n is not less than n; correspondingly/n degrees of angle beta.
In this application, the medial surface of the inner wall of sleeve pipe body can contract into a line, and the cross section is seen contracts into a point, and behind many dysmorphism loose tube amalgamations in the optical cable, the axis that is shown as the optical cable promptly.
The optical cable with high fiber core density and higher space utilization rate is characterized in that the special-shaped loose tube is made of modified polypropylene or polybutylene terephthalate or polytetrafluoroethylene or polyethylene or other plastics or steel or iron or aluminum or copper or alloy.
The optical cable with high space utilization and high fiber core density is characterized in that the type of the optical fiber is G.651 or G.652 or G.653 or G.654 or G.655 or G.656 or G.657 or A1a or A1b or A1c or A1 d.
The optical cable with higher space utilization and high fiber core density is characterized in that the insulated conductor consists of a conductor or a conductor and an insulating layer covering the conductor.
The optical cable with the high fiber core density and the higher space utilization rate is characterized in that the reinforcing piece is made of steel, copper, iron, aluminum, glass fiber reinforced plastic, aramid yarn rope, nylon rope, glass fiber rope or mixed material rope.
An optical cable with high fiber core density and high space utilization rate is disclosed, which is characterized in that the cushion layer is made of plastic, preferably polyethylene or polypropylene.
The optical cable with high fiber core density and higher space utilization rate is characterized in that the protective layer is made of steel belt, aluminum belt, copper belt, polyester belt, nylon belt, polyester binding yarn, water blocking belt, glass fiber belt or plastic.
The high-fiber-core-density optical cable with higher space utilization rate is characterized in that the outer sheath is made of low-density polyethylene or medium-density polyethylene or high-density polyethylene or polyvinyl chloride or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene nylon.
The utility model discloses following main beneficial effect has: the product has smaller diameter, is easier to manufacture, does not need cabling and stranding equipment, consumes less material, has lower cost and is quicker to manufacture.
Drawings
Fig. 1 is a schematic perspective view of a dissected segment of the example 1.
Fig. 2 is an enlarged cross-sectional structure diagram of fig. 1.
Fig. 3 is a schematic perspective view of a section of the shaped loose tube used in fig. 1 after dissection.
Fig. 4 is an enlarged cross-sectional view of fig. 3.
Fig. 5 is a schematic cross-sectional view of the shaped loose tube used in fig. 3 after optical fibers are loaded therein.
FIG. 6 is a schematic cross-sectional structure of example 2.
Fig. 7 is an enlarged cross-sectional structural view of the special-shaped loose tube used in fig. 6.
Fig. 8 is a schematic perspective view of a section of the shaped loose tube used in example 3 after dissection.
Fig. 9 is an enlarged cross-sectional view of fig. 8.
Fig. 10 is a schematic perspective view of a section of the shaped loose tube used in example 4 after dissection.
Fig. 11 is an enlarged cross-sectional view of fig. 10.
FIG. 12 is a schematic cross-sectional structure of example 5.
Fig. 13 is a schematic cross-sectional view of the shaped loose tube used in fig. 12 with a fiber ribbon loaded therein.
Fig. 14 is a schematic perspective view of a section of the shaped loose tube used in example 6 after dissection.
Fig. 15 is an enlarged cross-sectional view of fig. 14.
FIG. 16 is a schematic cross-sectional structure of example 7.
Fig. 17 is an enlarged cross-sectional structural view of the special-shaped loose tube used in fig. 16.
Fig. 18 is an enlarged cross-sectional view of fig. 17.
Fig. 19 is a schematic cross-sectional view of the shaped loose tube used in fig. 17 with a fiber ribbon loaded therein.
Fig. 20 is an enlarged cross-sectional structure diagram of the special-shaped loose tube used in practical example 8.
In order that those skilled in the art will more accurately and clearly understand and practice the present application, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: 1-special-shaped loose tube, 10-fiber containing cavity, 11-tube body, 12-inner side, 13-outer side, 3-optical fiber band, 31-optical fiber, 4-insulated wire, 5-reinforcement, 51-cushion layer, 6-protective layer and 7-outer sheath.
Detailed Description
Examples 1
Referring to fig. 1 to 5, an optical cable with high fiber core density and higher space utilization rate includes a strength member 5, six special-shaped loose tubes 1 located outside the strength member, a protective layer 6 covering all the special-shaped loose tubes, and an outer sheath 7 located outside the protective layer; the method is characterized in that:
the special-shaped loose tube 1 is composed of a closed tube body 11, the outer side surface 13 of the outer wall of the tube body 11 is a part of the surface of a second cylinder, the inner side surface 12 of the inner wall of the tube body 11 is a part of the surface of a first cylinder, the outer surface of the left side wall of the tube body 11 is a first plane, the outer surface of the right side wall of the tube body 11 is a second plane, a fiber accommodating cavity 10 is formed in the tube body 11, a plurality of optical fibers 31 are arranged in the fiber accommodating cavity 10, the axis of the first cylinder is coincident with the axis of the second cylinder and is called as a central axis, the intersection line of the first plane and the second plane deviates from the central axis, the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The optical cable with higher space utilization rate and high fiber core density is characterized in that the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta, which are both 60 degrees.
EXAMPLES example 2
Referring to fig. 6 and 7, and fig. 1 to 5, a high fiber core density optical cable with higher space utilization rate includes a strength member 5, four special-shaped loose tubes 1 located outside the strength member, a protective layer 6 covering all the special-shaped loose tubes, and an outer sheath 7 located outside the protective layer; the method is characterized in that:
the special-shaped loose tube 1 is composed of a closed tube body 11, the outer side surface 13 of the outer wall of the tube body 11 is a part of the surface of a second cylinder, the inner side surface 12 of the inner wall of the tube body 11 is a part of the surface of a first cylinder, the outer surface of the left side wall of the tube body 11 is a first plane, the outer surface of the right side wall of the tube body 11 is a second plane, a fiber accommodating cavity 10 is formed in the tube body 11, a plurality of optical fibers 31 are arranged in the fiber accommodating cavity 10, the axis of the first cylinder is coincident with the axis of the second cylinder and is called as a central axis, the first plane and the second plane are intersected at the central axis, the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The optical cable with higher space utilization rate and high fiber core density is characterized in that the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta, which are both 90 degrees.
EXAMPLE 3
Referring to fig. 8 and 9, and fig. 1 to 7, a high fiber core density optical cable with higher space utilization rate includes a strength member 5, a plurality of special-shaped loose tubes 1 located outside the strength member, a protective layer 6 covering all the special-shaped loose tubes, and an outer sheath 7 located outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve 1 is composed of a closed sleeve body 11, the outer side surface 13 of the outer wall of the sleeve body 11 is a part of the surface of a second cylinder, the inner side surface 12 of the inner wall of the sleeve body 11 is a part of the surface of a first cylinder, the outer surface of the left side wall of the sleeve body 11 is a first curved surface, the outer surface of the right side wall of the sleeve body 11 is a second curved surface, a fiber containing cavity 10 is formed inside the sleeve body 11, a plurality of optical fibers 31 are arranged in the fiber containing cavity 10, the axis where the first cylinder is located and the axis where the second cylinder is located coincide and are called as a central axis, the first curved surface protrudes towards the left side, and the second curved surface is recessed towards the direction of the fiber containing;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing part along the circumferential direction, in the clockwise direction, the second curved surface of the previous special-shaped loose tube is tightly attached to the first curved surface of the next special-shaped loose tube, the second curved surface of the last special-shaped loose tube is tightly attached to the first curved surface of the first special-shaped loose tube, the outer side surfaces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side surfaces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing part is tightly attached to the inner side surfaces of all the special-shaped loose tubes.
EXAMPLE 4
Referring to fig. 10 and 11, and fig. 1-7, a high fiber core density optical cable with higher space utilization rate includes a strength member 5, a plurality of special-shaped loose tubes 1 located outside the strength member, a protective layer 6 covering all the special-shaped loose tubes, and an outer sheath 7 located outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve 1 is composed of a closed sleeve body 11, an outer side surface 13 of an outer wall of the sleeve body 11 is a part of the surface of a second cylinder, an inner side surface 12 of an inner wall of the sleeve body 11 is a part of the surface of a first cylinder, an outer surface of a left side wall of the sleeve body 11 is a first plane, an outer surface of a right side wall of the sleeve body 11 is a second plane, a fiber accommodating cavity 10 is arranged inside the sleeve body 11, a plurality of optical fiber ribbons 3 are arranged in the fiber accommodating cavity 10, each optical fiber ribbon is provided with a plurality of optical fibers 31, an axis where the first cylinder is arranged is coincident with an axis where the second cylinder is arranged and is called as a central axis, an intersection line of the first plane and the second plane deviates from the central axis, a central angle of the inner side surface is equal to that of the outer side surface, and an included, the fiber containing cavity is approximately cuboid, the optical fiber ribbons are distributed in the fiber containing cavity in a laminating mode, and the length direction of the optical fiber ribbons is parallel to the length direction of the fiber containing cavity;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The length of the cuboid is approximately parallel to the first plane and the second plane.
EXAMPLE 5
Referring to fig. 12 and 13, and fig. 1-13, an optical cable with high fiber core density and high space utilization rate includes a strength member 5, a plurality of special-shaped loose tubes 1 located outside the strength member, a protective layer 6 covering all the special-shaped loose tubes, and an outer sheath 7 located outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve 1 is composed of a closed sleeve body 11, an outer side surface 13 of an outer wall of the sleeve body 11 is a part of the surface of a second cylinder, an inner side surface 12 of an inner wall of the sleeve body 11 is a part of the surface of a first cylinder, an outer surface of a left side wall of the sleeve body 11 is a first plane, an outer surface of a right side wall of the sleeve body 11 is a second plane, a fiber accommodating cavity 10 is arranged inside the sleeve body 11, a plurality of optical fiber ribbons 3 are arranged in the fiber accommodating cavity 10, each optical fiber ribbon is provided with a plurality of optical fibers, an electric power hole is arranged on the sleeve body 11 between the fiber accommodating cavity and the inner side surface 12 of the inner wall of the sleeve body 11, an insulated wire 4 is arranged in the electric power hole, an axis where the first cylinder is located is coincident with an axis where the second cylinder is located and is called a central axis, an intersecting line of the first plane and the second plane deviates from, an included angle beta is formed between the first plane and the second plane, the fiber containing cavity is approximately in a shape of a trapezoid cylinder, the lower bottom surface of the trapezoid cylinder is close to the outer side surface 13 of the outer wall of the sleeve body 11, the optical fiber ribbons are distributed in the fiber containing cavity in a stacking mode, and the optical fiber ribbons are stacked from one waist of the fiber containing cavity to the other waist in the length direction;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The upper and lower bottom surfaces of the trapezoid are approximately perpendicular to the first plane and the second plane.
EXAMPLE 6
Referring to fig. 14 and 15, a high fiber core density optical cable with a higher space utilization rate includes a strength member 5, a cushion layer 51 covering the strength member, a plurality of special-shaped loose tubes 1 located outside the cushion layer, a protective layer 6 covering all the special-shaped loose tubes, and an outer sheath 7 located outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve 1 is composed of a closed sleeve body 11, an outer side surface 13 of an outer wall of the sleeve body 11 is a part of the surface of a second cylinder, an inner side surface 12 of an inner wall of the sleeve body 11 is a part of the surface of a first cylinder, an outer surface of a left side wall of the sleeve body 11 is a first plane, an outer surface of a right side wall of the sleeve body 11 is a second plane, a fiber containing cavity 10 is arranged inside the sleeve body 11, a plurality of optical fiber ribbons 3 are arranged in the fiber containing cavity 10, each optical fiber ribbon is provided with a plurality of optical fibers, an axis of the first cylinder is coincided with an axis of the second cylinder and is called a central axis, the first plane and the second plane are intersected at the central axis, a central angle of the inner side surface is beta, a central angle of the outer side surface is beta, the fiber containing cavity is approximately in the shape of a trapezoid cylinder, and a lower bottom surface of the, the optical fiber ribbons are distributed in the fiber accommodating cavity in a stacking mode, and the optical fiber ribbons are stacked from one waist of the fiber accommodating cavity to the other waist in the length direction;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the outside of the cushion layer along the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side surfaces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side surfaces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing parts are tightly attached to the inner side surfaces of all the special-shaped loose tubes.
The upper and lower bottom surfaces of the trapezoid are approximately perpendicular to the first plane and the second plane.
EXAMPLES example 7
Referring to fig. 16 to 19, an optical cable with high fiber core density and higher space utilization rate includes a strength member 5, a plurality of special-shaped loose tubes 1 located outside the strength member, a protective layer 6 covering all the special-shaped loose tubes, and an outer sheath 7 located outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve 1 is composed of a closed sleeve body 11, an outer side surface 13 of an outer wall of the sleeve body 11 is a part of the surface of a second cylinder, an inner side surface 12 of an inner wall of the sleeve body 11 is a part of the surface of a first cylinder, an outer surface of a left side wall of the sleeve body 11 is a first plane, an outer surface of a right side wall of the sleeve body 11 is a second plane, a fiber containing cavity 10 is arranged inside the sleeve body 11, a plurality of optical fiber ribbons 3 are arranged in the fiber containing cavity 10, each optical fiber ribbon is provided with a plurality of optical fibers, an axis where the first cylinder is arranged is coincident with an axis where the second cylinder is arranged and is called as a central axis, the first plane and the second plane are intersected at the central axis, a central angle of the inner side surface is beta, a central angle of the outer side surface is beta, the fiber containing cavity is cuboid-shaped, a lower bottom surface of the cuboid is close to the outer side surface 13 of the, the optical fiber ribbons are stacked from one bottom surface of the optical fiber cavity to the other bottom surface in the length direction;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
The length direction of the cuboid is approximately parallel to the first plane and the second plane.
In this embodiment, the fiber accommodating cavity may also be a cylinder shape with a parallelogram cross section, and the length direction of the parallelogram cross section is approximately parallel to the first plane and the second plane.
EXAMPLES example 8
Referring to fig. 20 and fig. 16 to 19, a high-core-density optical cable with higher space utilization is substantially the same as embodiment 7, except that: the left side surface, namely the upper side surface, of the special-shaped loose tube 1 is empty, namely the fiber accommodating cavity 10 is opened to the left side surface or the upper side surface of the special-shaped loose tube 1, and the optical fiber ribbon or the optical fiber is placed in the fiber accommodating cavity 10; further, insulated wires can be placed.
Further, the opening, i.e., the size of the opening on the left or upper side of the special-shaped loose tube 1 is only a portion, unlike the opening in fig. 20, which allows only the insertion of optical fibers or optical fiber ribbons or insulated conductors, and normally cannot escape from the opening.
In the application, the number of the special-shaped loose tubes in each implementation example is not limited to that in the embodiment, and may be other multiple, or n, where n is not less than 2; correspondingly 360/n degrees of angle beta.
In this application, the medial surface of the inner wall of sleeve pipe body can contract into a line, and the cross section is seen contracts into a point, and behind many dysmorphism loose tube amalgamations in the optical cable, the axis that is shown as the optical cable promptly.
The optical cable with high fiber core density and higher space utilization rate is characterized in that the special-shaped loose tube is made of modified polypropylene or polybutylene terephthalate or polytetrafluoroethylene or polyethylene or other plastics or steel or iron or aluminum or copper or alloy.
The optical cable with high space utilization and high fiber core density is characterized in that the type of the optical fiber is G.651 or G.652 or G.653 or G.654 or G.655 or G.656 or G.657 or A1a or A1b or A1c or A1 d.
The optical cable with higher space utilization and high fiber core density is characterized in that the insulated conductor consists of a conductor or a conductor and an insulating layer covering the conductor.
The optical cable with the high fiber core density and the higher space utilization rate is characterized in that the reinforcing piece is made of steel, copper, iron, aluminum, glass fiber reinforced plastic, aramid yarn rope, nylon rope, glass fiber rope or mixed material rope.
An optical cable with high fiber core density and high space utilization rate is disclosed, which is characterized in that the cushion layer is made of plastic, preferably polyethylene or polypropylene.
The optical cable with high fiber core density and higher space utilization rate is characterized in that the protective layer is made of steel belt, aluminum belt, copper belt, polyester belt, nylon belt, polyester binding yarn, water blocking belt, glass fiber belt or plastic.
The high-fiber-core-density optical cable with higher space utilization rate is characterized in that the outer sheath is made of low-density polyethylene or medium-density polyethylene or high-density polyethylene or polyvinyl chloride or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene nylon.
In this application, preferred scheme is that two arbitrary dysmorphism loose tubes's colour is different, can two liang distinguish like this very conveniently, and the colour of relatively using commonly is: blue, orange, green, brown, gray, white (Ben), red, black, yellow, purple, pink, turquoise; can be selected in sequence; other colors that are readily distinguishable may also be used.
In order to facilitate the processing, the method can also be implemented by three colors, for example, when there are red, green and white (this) colors in the special-shaped loose tube, for example, more than three colors, one is red, one is green, and the other is a natural color, so that only the sequence specified by human needs to be, for example, the sequence is arranged in the clockwise direction: red, green, this, so can find special-shaped loose tube very conveniently, accurately, such as the several root nature color tubes behind red and green, etc..
In the application, the special-shaped loose tubes are arranged clockwise only for descriptive convenience, and actually anticlockwise can be realized, so long as one of two ends of one cable is arranged according to the embodiment.
In the special-shaped loose tube in the application, the special-shaped loose tube can be replaced by a part of special-shaped filling ropes, the special-shaped filling ropes are the same as the special-shaped loose tube in appearance and size, only optical fibers or optical cable belts do not exist inside the special-shaped loose tube, or fiber accommodating cavities do not exist inside the special-shaped loose tube, the special-shaped filling ropes can be made of the same material as the special-shaped loose tube, or different materials, preferably plastic materials, foamed materials and the like can be adopted.
In the application, because the adjacent special-shaped loose tubes are tightly attached, the problem of space waste caused by the fact that a gap inevitably exists between the adjacent cylindrical loose tubes and the adjacent loose tubes and a gap exists between the adjacent loose tubes and the reinforcing piece in the prior art is solved; because there is no gap in this application, so make space utilization higher. The special-shaped loose tube is adopted to replace a cylindrical loose tube in the prior art, the utilization of the gap enables the length of the special-shaped loose tube which is outward along the axial line of the special-shaped loose tube to be shortened, the diameter of a cable core formed by the special-shaped loose tube and the reinforcing piece to be reduced, further, the diameters of a protective layer and an outer sheath outside the cable core are correspondingly reduced, when the same thickness requirement is met, the material consumption is greatly reduced, and the cost is obviously reduced.
The optical cable with larger core number and without the optical fiber ribbon also has unexpected beneficial technical effects, which are mainly shown in the following steps: (1) in the prior art, a layer stranded optical cable adopts SZ stranding to form a cable core, SZ stranding equipment occupies a large space, and the length of a production line is about 50 meters generally; in addition, the SZ twisting equipment generally has hundreds of thousands of RMB, and needs to be assembled, debugged, workers and high power consumption when in production, and needs to be illuminated when in work at night; after the structure of the application is adopted, the special-shaped loose tube is produced on the original loose tube production equipment, and only the mould is redesigned; SZ twisting cabling equipment is not needed, so that the field is saved, and assembly and debugging are not needed, cabling production workers are not needed, and the electricity fee, the lighting fee and the like used by the cabling equipment are not needed to be paid out; but the finished cable is made on the sheath production line, so the cost is greatly saved; (2) in the prior art, pay-off stands and twisting heads of cabling equipment are limited, generally only 12 pay-off stands are arranged, and the procedures are also set, so that less than 12 loose tubes can be selected for use; when 12 loose tubes are used, all the tubes are used; the most core number of the loose tubes generally supported by the loose tube production equipment is 12 cores; for producing the optical cable with large core number, the sectional production is needed, for example, the cabling is carried out twice or more, the diameter of the first cable core is accurately designed and calculated, then the cabling is carried out for the second time according to 12 design, in order to ensure that the loose tubes are tangent pairwise and the loose tubes are tangent with the first cable core, the size of the second layer or the first layer of loose tubes is generally required to be adjusted, the different loose tube sizes bring troubles to management, are not standard products and are difficult to use later, and in order to ensure that the optical fiber is longer than the loose tubes, the one-time surplus length is formed; and forming secondary extra length in the cabling, so that the cable has enough resistance, temperature and other properties, and is kept stable under the allowable condition change, and the loose sleeve cannot be designed to be too small, which cannot meet the performance requirement; the cost is increased and the product competitiveness is reduced due to the fact that the product is too large; in the application, the problems are ingeniously avoided, the length of the special-shaped loose tube can be lengthened, the height of the special-shaped loose tube can be relatively compressed, the space is increased, the number of the special-shaped loose tubes is increased, the accommodating number of optical fibers is increased, and the density of the optical fibers is increased; as in fig. 16 of the present application, with 24 shaped loose tubes, one can mold, which in the prior art would require two; moreover, through accurate design and calculation, the length of the special-shaped loose tube is lengthened, and compared with the two layers of loose tubes (12 inner layers and 12 outer layers) adopted in the prior art, the diameter of a cable core is reduced by 35.18 percent, namely the overall diameter of a product is also reduced, material consumption is reduced, the cost is lower, the space utilization efficiency is higher, and the external space is less occupied during laying; moreover, after the product is light, the transportation cost is also obviously reduced, and in addition, the maintenance and other work of cabling equipment are not needed; (3) the cable core structure of the layer-stranded optical cable in the prior art is provided with a reinforcing member or a central reinforcing member and a plurality of loose tubes, namely n loose tubes, which are of a 1+ n structure for short; in the 1+6 structure, if the diameter of the loose tube is a, the diameter of the reinforcing member is a, the diameter of the cable core is slightly larger than 3a (the reinforcing member is generally a little larger than the theoretical one, and in order to stabilize the cable core structure, the polyester binder is wrapped outside the cable core, and the diameter increase caused by the polyester binder is about 0.3 mm); in the 1+8 structure, if the diameter of the loose tube is a, the diameter of the reinforcing member is 1.6131a +, the diameter of the cable core is slightly larger than 3.6131a (the reinforcing member is generally a little larger than the theoretical one, and in order to stabilize the structure of the cable core, the polyester binder is wrapped outside the cable core, and the diameter increase caused by the polyester binder is about 0.3 mm); in the 1+10 structure, if the diameter of the loose tube is a, the diameter of the reinforcing member is 2.2361a +, the diameter of the cable core is slightly larger than 4.2361a (the reinforcing member is generally a little larger than the theoretical one, and in order to stabilize the structure of the cable core, the polyester binder is wrapped outside the cable core, and the diameter increase caused by the polyester binder is about 0.3 mm); in the 1+12 structure, if the diameter of the loose tube is a, the diameter of the reinforcing element is 2.8637a, the diameter of the cable core is slightly larger than 4.8637a + (the reinforcing element is generally a little larger than the theoretical one, and in order to stabilize the structure of the cable core, the polyester binder is wrapped outside the cable core, and the diameter increase caused by the polyester binder is about 0.3 mm); the n value is overlarge, the size of the reinforcing piece is larger, and the reinforcing piece is used for adding the reinforcing piece and providing fit to enable the structure to be stable and round, so that the reinforcing piece is often formed by extruding a plastic cushion layer outside the reinforcing piece on the premise of enough force value to save cost, lighten the weight of the optical cable and the like; after the special-shaped loose tube is adopted, a cushion layer is not needed, so that the special-shaped loose tube is moved inwards integrally as long as the space in the special-shaped loose tube can contain optical fibers or optical fiber ribbons, and enough clearance is provided to ensure that the special-shaped loose tube can still ensure stable optical performance when the mechanical and temperature change; meanwhile, the thickness of the cushion layer can be reduced, the special-shaped loose sleeve is moved inwards, according to the actual production and measurement of the applicant, for a 1+12 structure, the diameter of the cable core is originally 4.8637a +, but after the structure of the application is adopted, the cushion layer is not used, the diameter of the cable core is 3.26a, namely the same number of cores, and the diameter of the cable core is only 67.03% of that of the cable core in the prior art; the material of the outer part is saved obviously and the diameter of the product is reduced.
The optical cable with the optical fiber ribbon and a larger core number has the beneficial effects of the optical cable without the optical fiber ribbon, and the optical fiber ribbon is different from the prior art, in the skeleton type optical cable in the prior art, the opening of the rib groove is outward, namely, the rib groove is sunken from the excircle circumference of the skeleton to the center of the skeleton, then the optical fiber ribbon is sequentially stacked at the bottom of the skeleton groove in the length direction, and then is stacked upwards, then the protective layer is adopted to seal the opening of the skeleton groove, and the protective layer is separated or divided when the optical fiber ribbon is taken out, so that the optical fiber ribbon in the protective layer is taken; in the application, the optical fiber ribbon is different from the distribution of the optical fiber ribbon, the direction of the optical fiber ribbon is relatively rotated by nearly 90 degrees from the direction in the prior art, namely the length direction of the optical fiber ribbon is practically almost vertical to the outer side surface or the inner side surface of the special-shaped loose tube, the change of the direction is not easy to be thought by technical personnel, and the direction transposition solves the technical problem of how to ensure that the optical fiber ribbon occupies more excellent space in the special-shaped loose tube and is more suitable for the optical cable with the loose tube structure; in addition, the left side surface or the right side surface of the special-shaped loose tube is provided with an opening, and the opening can ensure that an optical fiber ribbon in the special-shaped loose tube can be kept stable under normal conditions and does not escape from the opening, so that the special-shaped loose tube is convenient to produce, the opening is covered by the adjacent loose tube in an optical cable product, and after the protective layer is removed during detection, construction and the like, the optical fiber or the optical fiber ribbon in the special-shaped loose tube can be taken out from the opening as long as the whole special-shaped loose tube is taken out, so that the special-shaped loose tube is extremely convenient, and the structure can still be kept; however, the skeleton-type optical cable in the prior art cannot be realized, and the skeleton-type optical cable in the prior art still needs to adopt more complicated measures to cover the skeleton groove to stabilize the structure.
The utility model discloses following main beneficial effect has: the product has smaller diameter, is easier to manufacture, does not need cabling and stranding equipment, consumes less material, has lower cost and is quicker to manufacture.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limitations of the present invention. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (10)
1. A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, six special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose tube is composed of a closed tube body, the outer side surface of the outer wall of the tube body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the tube body is a part of the surface of a first cylinder, the outer surface of the left side wall of the tube body is a first plane, the outer surface of the right side wall of the tube body is a second plane, a fiber accommodating cavity is formed in the tube body, a plurality of optical fibers are arranged in the fiber accommodating cavity, the axis of the first cylinder is coincident with the axis of the second cylinder and is called as a central axis, the intersecting line of the first plane and the second plane deviates from the central axis, the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
2. A space efficient high core density fiber optic cable as claimed in claim 1, wherein the central angle of said inner side surface is β and the central angle of said outer side surface is β both 60 degrees.
3. A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, four special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose tube is composed of a closed tube body, the outer side surface of the outer wall of the tube body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the tube body is a part of the surface of a first cylinder, the outer surface of the left side wall of the tube body is a first plane, the outer surface of the right side wall of the tube body is a second plane, a fiber accommodating cavity is formed in the tube body, a plurality of optical fibers are arranged in the fiber accommodating cavity, the axis of the first cylinder is coincident with the axis of the second cylinder and is called a central axis, the first plane and the second plane are intersected at the central axis, the central angle of the inner side surface is beta, and the central angle of the outer side surface is beta;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing piece in the circumferential direction, in the clockwise direction, the second plane of the previous special-shaped loose tube is tightly attached to the first plane of the next special-shaped loose tube, the second plane of the last special-shaped loose tube is tightly attached to the first plane of the first special-shaped loose tube, the outer side faces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side faces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing piece is tightly attached to the inner side faces of all the special-shaped loose tubes.
4. A space efficient high core density fiber optic cable as claimed in claim 3, wherein the central angle of said inner side surface is β and the central angle of said outer side surface is β both 90 degrees.
5. A high fiber core density optical cable with higher space utilization rate is provided with a reinforcement, a plurality of special-shaped loose tubes positioned outside the reinforcement, a protective layer covering all the special-shaped loose tubes, and an outer sheath positioned outside the protective layer; the method is characterized in that:
the special-shaped loose sleeve is composed of a closed sleeve body, the outer side surface of the outer wall of the sleeve body is a part of the surface of a second cylinder, the inner side surface of the inner wall of the sleeve body is a part of the surface of a first cylinder, the outer surface of the left side wall of the sleeve body is a first curved surface, the outer surface of the right side wall of the sleeve body is a second curved surface, a fiber containing cavity is formed in the sleeve body, a plurality of optical fibers are arranged in the fiber containing cavity, the axis of the first cylinder is coincident with the axis of the second cylinder and is called as a central axis, the first curved surface protrudes towards the left side, and the second curved surface is recessed towards the direction of the fiber containing cavity;
in the optical cable, the special-shaped loose tubes are symmetrically distributed around the reinforcing part along the circumferential direction, in the clockwise direction, the second curved surface of the previous special-shaped loose tube is tightly attached to the first curved surface of the next special-shaped loose tube, the second curved surface of the last special-shaped loose tube is tightly attached to the first curved surface of the first special-shaped loose tube, the outer side surfaces of all the special-shaped loose tubes are arranged on the surface of the second cylinder body and spliced into a complete cylinder, the inner side surfaces of all the special-shaped loose tubes are arranged on the surface of the first cylinder body and spliced into a complete cylinder, and the reinforcing part is tightly attached to the inner side surfaces of all the special-shaped loose tubes.
6. A space-efficient high core density optical cable according to any one of claims 1 to 5 wherein the material of said shaped loose tube is modified polypropylene or polybutylene terephthalate or polytetrafluoroethylene or polyethylene or iron or aluminum or copper or alloy.
7. The optical cable as claimed in any one of claims 1 to 5, wherein the optical fiber has a type of G.651 or G.652 or G.653 or G.654 or G.655 or G.656 or G.657 or A1a or A1b or A1c or A1 d.
8. A space efficient high core density optical cable according to any one of claims 1 to 5 wherein the strength member is made of steel or copper or iron or aluminium or glass fibre reinforced plastic or aramid yarn or nylon or glass fibre or a mixed material.
9. A more space efficient high core density optical cable according to any one of claims 1 to 5 wherein the material of the protective layer is steel or aluminium or copper or water blocking tape or glass fibre tape or plastic.
10. A space utilization high core density optical cable according to any one of claims 1 to 5, wherein the material of said outer sheath is low density polyethylene or medium density polyethylene or high density polyethylene or polyvinyl chloride or low smoke halogen-free polyethylene or low smoke low halogen polyethylene nylon.
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| CN202020646977.1U CN211627903U (en) | 2020-04-26 | 2020-04-26 | High-fiber-core-density optical cable with higher space utilization rate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022057101A1 (en) * | 2020-09-17 | 2022-03-24 | 苏州专创光电科技有限公司 | Microstructure layer-stranded optical cable |
| CN114384656A (en) * | 2022-03-01 | 2022-04-22 | 长飞光电线缆(苏州)有限公司 | Optical fiber ribbon optical cable with elastic wrapping outer protective layer |
-
2020
- 2020-04-26 CN CN202020646977.1U patent/CN211627903U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022057101A1 (en) * | 2020-09-17 | 2022-03-24 | 苏州专创光电科技有限公司 | Microstructure layer-stranded optical cable |
| CN114384656A (en) * | 2022-03-01 | 2022-04-22 | 长飞光电线缆(苏州)有限公司 | Optical fiber ribbon optical cable with elastic wrapping outer protective layer |
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