CN113655579B - Layer stranded optical cable with heart-shaped unit - Google Patents
Layer stranded optical cable with heart-shaped unit Download PDFInfo
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- CN113655579B CN113655579B CN202111002944.9A CN202111002944A CN113655579B CN 113655579 B CN113655579 B CN 113655579B CN 202111002944 A CN202111002944 A CN 202111002944A CN 113655579 B CN113655579 B CN 113655579B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/441—Optical cables built up from sub-bundles
- G02B6/4413—Helical structure
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Abstract
The invention belongs to the field of cables, and particularly relates to a layer stranded optical cable with a heart-shaped unit, which is provided with an outer protective layer and at least three loose tubes, and is characterized in that the loose tubes are composed of two loose tube main bodies, connecting ribs are arranged between the loose tube main bodies, the connecting ribs are V-shaped, loose tube protective layers are further arranged outside the loose tubes, the loose tube protective layer main bodies are in an open heart shape, an open slot is formed in the top of the loose tube protective layers, the loose tube protective layer main bodies at the two ends of the open slot are connected with two compression parts, the width of the open slot is smaller than that of the loose tube, limiting parts are arranged on the inner wall of the outer protective layer main body, the limiting parts are clamped between the two adjacent loose tube protective layers, and a central stabilizing part is arranged at the convergence position of the heart-shaped bottoms of all the loose tube protective layers.
Description
Technical Field
The invention belongs to the field of cables, and particularly relates to a layer stranded optical cable with a heart-shaped unit.
Background
Along with the popularization on a large scale of domestic 5G construction, the demand of optical cables is larger and larger, and along with a large amount of laying each year, pipeline resources are less and less, so that the optical cables with the small core number need to be laid for multiple times by laying the optical cables with the large core number, and the waste of the pipeline resources is reduced.
In the prior art, for example, CN110824649A discloses a novel pressure-resistant optical cable, which has a reinforcement, a loose tube and an outer sheath, wherein at least one optical communication component is arranged in the loose tube, and the novel pressure-resistant optical cable is characterized in that a pressure-resistant belt is further arranged between the loose tube and the outer sheath, and the pressure-resistant belt comprises a pressure-resistant belt base band, at least one supporting component and an extrusion head; the reinforcing part is composed of a reinforcing part main body and a tensile part, a plurality of pressure reducing grooves are formed in the reinforcing part main body, two limiting parts are arranged on two sides of the opening of each pressure reducing groove respectively, and the extrusion head is positioned in the pressure reducing grooves, and the reinforcing part main body is made of elastic materials; the invention solves the problem that the supporting part is easy to bend when the pressure is higher.
The above prior art has the following disadvantages: 1. the position of the loose tube is not fixed, and when the optical cable vibrates, the optical fiber in the loose tube is easily influenced; 2. the position between two spacing parts compressive capacity is not strong, thereby easily extrudees the loose sleeve pipe and makes the loose sleeve pipe warp, influences optical fiber transmission performance.
For another example, CN 1126988458A discloses an anti-seismic and anti-compression optical cable, which has a loose tube, an inner sheath and an outer sheath, wherein the loose tube is internally provided with an optical communication component, and is characterized in that the outer sheath is composed of an outer sheath main body, a plurality of limiting grooves are formed at intervals on the inner wall of the outer sheath main body, at least three coaxial through holes with the same shape are formed in all the inner wall, an armor component is further arranged between the inner sheath and the outer sheath, the armor component is composed of an outer reinforcing rod, a plurality of limiting components and elastic components, the left ends of the limiting components and the elastic components are fixed on the outer reinforcing rod, the outer reinforcing rod is located in the corresponding through hole, and the limiting components are located in the corresponding limiting grooves.
The above prior art has the following disadvantages: when the deformation of the external compression-resistant component reaches the limit, the loose tube is easily extruded to cause the deformation of the loose tube, and the transmission performance of the optical fiber is influenced.
Therefore, it is necessary to develop an optical cable having better shock resistance and pressure resistance.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a layer stranded optical cable having a heart-shaped unit, which is implemented by the following technical solutions.
The utility model provides a layer stranded cable with heart-shaped unit has outer jacket and at least three loose tube, its characterized in that loose tube comprises two loose tube main parts, form two second in the loose tube main part and hold the chamber, be equipped with the splice bar between the loose tube main part, the splice bar is the V font, still be equipped with loose tube protective layer outside the loose tube, loose tube protective layer comprises loose tube protective layer main part, loose tube protective layer main part is open-ended heart shape, and the inside first appearance chamber that holds that forms of loose tube protective layer main part, top form the open slot, the loose tube protective layer main part at open slot both ends is connected with two compression parts, the V font bottom of splice bar and the directional cable center in heart shape bottom of loose tube protective layer under not receiving the pressure, the width of open tube is less than the width of loose tube, the angle that the splice bar base formed is greater than two angles that the heart-shaped interior edges of loose tube protective layer main part formed, the outer jacket comprises outer jacket main part and the spacing part of interval distribution in outer jacket main part inner wall, forms the spacing groove between two adjacent spacing parts, and the card is gone into between two adjacent loose tube protective layer, and is equipped with the top edge of communication part and the laminating of the same top edge of the outer jacket, and all last compression parts of the stable roof edge of the chamber inner wall of the circumference of the loose tube.
The layer stranded optical cable with the heart-shaped unit is characterized in that the cross section of the central stabilizing component is in a star shape, and the loose tube protective layer is inserted into the intersection of each corresponding star-shaped branch.
The layer stranded optical cable with the heart-shaped unit is characterized in that an external reinforcing piece is arranged in each limiting part.
The layer stranded optical cable with the heart-shaped unit is characterized in that the outer reinforcement is made of stainless steel wires or galvanized steel wires.
Further, in order to improve the flexibility of the optical cable for easy installation without lowering the tensile strength of the optical cable, the external reinforcing member may be replaced with a stranded wire formed by stranding a plurality of thin steel wires.
Above-mentioned layer stranded optical cable with heart-shaped unit through set up outside reinforcement in spacing part, has improved the tensile properties of optical cable, has still improved the resistance to compression and the anti-shear protection of optical cable simultaneously, and outside reinforcement is located the periphery of optical cable, makes the optical cable receive the pulling force when, and the atress is more even.
The layer stranded optical cable with the heart-shaped unit is characterized in that the cross section of the central stabilizing component is circular, the heart-shaped bottom of the loose tube protective layer is arc-shaped, and the arc-shaped surface is attached to the surface of the central stabilizing component.
In the layer stranded optical cable with the heart-shaped units, the bottom of the loose sleeve protective layer is attached to the surface of the central stabilizing part, so that the tensile resistance of the central part of the optical cable is improved, the contact surface between the loose sleeve protective layer and the central stabilizing part is increased, the cable core structure of the optical cable is more stable, and the compressive capacity of the optical cable is indirectly improved.
The layer stranded optical cable with the heart-shaped unit is characterized in that the communication component in the second cavity is an optical unit.
The layer-stranded optical cable with the heart-shaped unit is characterized in that the communication part in the second cavity on one side is an optical unit, and the communication part in the second cavity on the other side is an electrical unit.
The layer stranded optical cable with the heart-shaped unit is characterized in that the optical unit is a G.652 type optical fiber, a G.653 type optical fiber, a G.654 type optical fiber, a G.655 type optical fiber, a G.656 type optical fiber, a G.657 type optical fiber, an A1a type optical fiber, an A1b type optical fiber or an A1c type optical fiber.
The layer stranded optical cable with the heart-shaped unit is characterized in that the electric unit is made of copper or aluminum.
The layer stranded optical cable with the heart-shaped unit can transmit optical signals and electric signals simultaneously, the optical unit and the electric unit are isolated from each other at a relatively long distance, the heat emitted by the electric unit during working cannot influence the normal operation of the optical unit, and the heat emitted by the electric unit can be emitted out of the optical cable through the open slot.
The layer stranded optical cable with the heart-shaped unit is characterized in that the two ends of the connecting rib are thick, and the middle of the connecting rib is thin.
The layer stranded optical cable with the heart-shaped unit is characterized in that the two ends of the loose tube protective layer main body are thin and the middle of the loose tube protective layer main body is thick.
The layer-stranded optical cable with the heart-shaped unit is characterized in that the outer protective layer is made of high-density polyethylene.
The layer stranded optical cable with the heart-shaped unit is characterized in that the loose tube material is polybutylene terephthalate.
The layer stranded optical cable with the heart-shaped unit is characterized in that the material of the loose tube protective layer is thermoplastic polyester elastomer.
According to the invention, when the optical cable is stressed at the position corresponding to the limiting part, the limiting part downwards extrudes the side walls of the loose tube protective layers at the two sides, the loose tube protective layers inwards shrink, the loose tube is extruded, the connecting ribs of the loose tube shrink towards the middle, and the external pressure is absorbed through the elastic deformation of the loose tube protective layers and the connecting ribs to achieve the effect of protecting the loose tube; when the optical cable is under pressure at the position corresponding to the limiting groove, the loose tube protective layers at the stress position are spread, the loose tube protective layers at two sides are extruded towards two sides, the loose tube protective layers at two sides are contracted inwards, the loose tube is extruded, the connecting rib of the loose tube is contracted towards the middle, and the loose tube is extruded downwards into the lower part of the loose tube protective layer, so that the compression resistance of the optical cable is further improved, and the external pressure is absorbed through elastic deformation of the loose tube protective layers and the connecting rib to achieve the effect of protecting the loose tube; the elasticity of the compression part can also provide certain pressure resistance for the optical cable; in the invention, the pressure applied on the optical cable is absorbed by the deformation of the loose tube protective layer and the connecting ribs, so that the shape of the loose tube main body is kept to the maximum extent, and finally, the optical unit in the loose tube main body is protected from being influenced.
Therefore, the invention has the advantages of simple structure, strong pressure resistance, strong tensile property, difficult deformation of the loose tube main body, good heat dissipation performance and the like.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic view of the protective layer structure of the loose tube of the present invention.
Fig. 3 is a schematic view of the loose tube structure of the present invention.
Fig. 4 is a schematic view of the structure of the outer protective layer in embodiment 1 of the present invention.
Fig. 5 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 6 is a schematic perspective view of embodiment 3 of the present invention.
Fig. 7 is a schematic structural diagram of embodiment 4 of the present invention.
Fig. 8 is a schematic structural diagram of embodiment 5 of the present invention.
In the figure: 1. the novel high-power-density cable comprises an outer protection layer, 11 parts of an outer protection layer main body, 12 parts of a limiting component, 13 parts of a limiting groove, 2 parts of a loose sleeve protective layer, 21 parts of a compression component, 22 parts of an open groove, 23 parts of a first containing cavity, 24 parts of a loose sleeve protective layer main body, 3 parts of a loose sleeve, 31 parts of a loose sleeve main body, 32 parts of a second containing cavity, 33 parts of a connecting rib, 4 parts of an optical unit, 5 parts of an external reinforcing part, 6 parts of a central stabilizing component and 7 parts of an electric unit.
Detailed Description
Example 1
Referring to fig. 1 to 4, a layer stranded cable having a core unit, has an outer sheath 1 and four loose tubes 3, it is characterized in that the loose tube 3 is composed of two loose tube main bodies 31, two second containing cavities 32 are formed in the loose tube main bodies 31, connecting ribs 33 are arranged between the loose tube main bodies 31, the connecting rib 33 is V-shaped, the loose tube 3 is also provided with a loose tube protective layer 2, the loose tube protective layer 2 is composed of a loose tube protective layer main body 24, the loose tube protective layer main body 24 is in an open heart shape, a first containing cavity 23 is formed inside the loose tube protective layer main body 24, an open slot 22 is formed at the top, two compression parts 21 are connected to the loose tube protection layer main body 24 at both ends of the open groove 22, the V-shaped bottom of the connecting rib 33 and the heart-shaped bottom of the loose tube protective layer 2 point to the center of the cable, under the condition of no pressure, the width of the open slot 22 is less than that of the loose tube 3, the angle formed by the bottom edges of the connecting ribs 33 is greater than the angle formed by two inner edges of the heart shape of the loose tube protective layer main body 24, the outer protective layer 1 is composed of an outer protective layer main body 11 and limiting parts 12 distributed on the inner wall of the outer protective layer main body 11 at intervals, a limiting groove 13 is formed between every two adjacent limiting parts 12, the limiting parts 12 are clamped between every two adjacent loose tube protective layers 2, the upper parts of the loose tube protective layers 2 are positioned in the corresponding limiting grooves 13, the top edges of all the compression parts 21 are attached to the inner wall of the outer protective layer main body 11, and on the same circumference, at least one optical unit 4 is arranged in the second containing cavity 32, a central stabilizing component 6 is arranged at the convergence position of the heart-shaped bottoms of all the loose tube protective layers 2, the cross section of the central stabilizing component 6 is star-shaped, and the loose tube protective layers 2 are inserted into the intersection of the corresponding star-shaped branches.
Example 2
Referring to fig. 2, 3 and 5, and referring to fig. 4, a layer stranded optical cable with a heart-shaped unit includes an outer sheath 1 and four loose tubes 3, and is characterized in that the loose tube 3 is composed of two loose tube main bodies 31, two second cavities 32 are formed in the loose tube main bodies 31, a connecting rib 33 is disposed between the loose tube main bodies 31, the connecting rib 33 is V-shaped, a loose tube protective layer 2 is further disposed outside the loose tube 3, the loose tube protective layer 2 is composed of loose tube protective layer main bodies 24, the loose tube protective layer main bodies 24 are open-ended heart-shaped, a first cavity 23 is formed inside the loose tube protective layer main body 24, an open groove 22 is formed at the top, the loose tube protective layer main bodies 24 at two ends of the open groove 22 are connected with two compression components 21, the V-shaped bottom of the connecting rib 33 and the heart-shaped bottom of the loose tube protective layer 2 point to the center of the cable under no-pressure, the width of the open groove 22 is smaller than the width of the loose tube 3, the angle formed by the connecting rib 33 is larger than the angle formed by the inner side of the two star-shaped protective layers 24, the outer sheath protective layer 1 and the adjacent limiting components 12 are inserted into the limiting groove 12, the limiting component formed at the adjacent limiting groove 12, the limiting component 12 is disposed on the inner wall of the loose tube main body 12, the upper side of the loose tube 2, the limiting groove 12, the limiting component, the limiting groove 12 is stably disposed on the upper side of the loose tube main body, the limiting groove 12, an external reinforcing member 5 is provided in each of the position restricting parts 12.
The layer stranded optical cable with the heart-shaped unit is characterized in that the outer reinforcing member 5 is made of stainless steel wires or galvanized steel wires.
Further, in order to improve the flexibility of the optical cable for easy installation without reducing the tensile strength of the optical cable, the external reinforcing member 5 may be replaced with a stranded wire formed by stranding a plurality of thin steel wires.
This embodiment, through set up outside reinforcement 5 in spacing part 12, has improved the tensile properties of optical cable, has still improved the resistance to compression and the anti-shear protection of optical cable simultaneously, and outside reinforcement 5 is located the periphery of optical cable, makes the optical cable when receiving the pulling force, and the atress is more even.
Example 3
Referring to fig. 2, 3 and 6 and fig. 4, a layer stranded optical cable with a heart-shaped unit includes an outer sheath 1 and four loose tubes 3, and is characterized in that the loose tube 3 is composed of two loose tube main bodies 31, two second cavities 32 are formed in the loose tube main bodies 31, a connecting rib 33 is disposed between the loose tube main bodies 31, the connecting rib 33 is V-shaped, a loose tube protective layer 2 is further disposed outside the loose tube 3, the loose tube protective layer 2 is composed of a loose tube protective layer main body 24, the loose tube protective layer main body 24 is open-ended heart-shaped, a first cavity 23 is formed inside the loose tube protective layer main body 24, an open groove 22 is formed at the top, the loose tube protective layer main bodies 24 at two ends of the open groove 22 are connected with two compression components 21, the V-shaped bottom of the connecting rib 33 and the heart-shaped bottom of the loose tube protective layer 2 point to the center of the cable, under no pressure, the width of the open groove 22 is smaller than the width of the loose tube 3, the angle formed by the connecting rib 33 is larger than the angle formed by the inner edge of the two core-shaped protective layers 24, the outer sheath protective layer 1 and the adjacent limiting components 12 are disposed on the outer side of the loose tube main body, the limiting layer 12, the limiting component 12, the adjacent limiting component 12 is disposed on the outer side of the loose tube main body 12, the limiting layer 12, the limiting component 12, the limiting groove 12 is disposed on the outer side of the loose tube 12, the section of the central stabilizing component 6 is circular, the heart-shaped bottom of the loose tube protective layer 2 is arc-shaped, and the arc-shaped surface is attached to the surface of the central stabilizing component 6.
The layer stranded optical cable with the heart-shaped unit is characterized in that the outer reinforcing member 5 is made of stainless steel wires or galvanized steel wires.
The layer stranded optical cable with the heart-shaped unit is characterized in that the central stabilizing component 6 is made of stainless steel wires or galvanized steel wires.
In this embodiment, the bottom of the loose tube protective layer 2 is attached to the surface of the central stabilizing component 6, so that the stretch-proofing performance of the central part of the optical cable is improved, the contact surface between the loose tube protective layer 2 and the central stabilizing component 6 is increased, the cable core structure of the optical cable is more stable, and the compression resistance of the optical cable is indirectly improved.
Example 4
Referring to fig. 2, 3 and 7, and to fig. 4, a layer stranded type optical cable having a core unit, has an outer sheath 1 and five loose tubes 3, it is characterized in that the loose tube 3 is composed of two loose tube main bodies 31, two second containing cavities 32 are formed in the loose tube main bodies 31, connecting ribs 33 are arranged between the loose tube main bodies 31, the connecting rib 33 is V-shaped, the loose tube 3 is also provided with a loose tube protective layer 2, the loose tube protective layer 2 is composed of a loose tube protective layer main body 24, the loose tube protection layer main body 24 is in an open heart shape, a first containing cavity 23 is formed inside the loose tube protection layer main body 24, an open groove 22 is formed at the top, two compression parts 21 are connected to the loose tube protective layer main body 24 at both ends of the open groove 22, the V-shaped bottom of the connecting rib 33 and the heart-shaped bottom of the loose tube protective layer 2 point to the center of the cable, under the condition of no pressure, the width of the open slot 22 is less than that of the loose tube 3, the angle formed by the bottom edge of the connecting rib 33 is greater than the angle formed by two inner edges of the heart shape of the loose tube protective layer main body 24, the outer protective layer 1 consists of an outer protective layer main body 11 and limiting parts 12 distributed on the inner wall of the outer protective layer main body 11 at intervals, a limiting groove 13 is formed between every two adjacent limiting parts 12, the limiting parts 12 are clamped between every two adjacent loose tube protective layers 2, the upper parts of the loose tube protective layers 2 are positioned in the corresponding limiting grooves 13, the top edges of all compression parts 21 are attached to the inner wall of the outer protective layer main body 11, and on the same circumference, at least one optical unit 4 is arranged in the second containing cavity 32, a central stabilizing component 6 is arranged at the convergence position of the heart-shaped bottoms of all the loose tube protective layers 2, the cross section of the central stabilizing component 6 is star-shaped, and the loose tube protective layers 2 are inserted into the intersection of the corresponding star-shaped branches.
Example 5
Referring to fig. 2, 3 and 8, and referring to fig. 4, a layer stranded optical cable having a core-shaped unit includes an outer sheath 1 and five loose tubes 3, and is characterized in that the loose tube 3 is composed of two loose tube main bodies 31, two second cavities 32 are formed in the loose tube main body 31, a connecting rib 33 is disposed between the loose tube main bodies 31, the connecting rib 33 is V-shaped, a loose tube protective layer 2 is further disposed outside the loose tube 3, the loose tube protective layer 2 is composed of loose tube protective layer main bodies 24, the loose tube protective layer main bodies 24 are in an open-ended core shape, a first cavity 23 is formed inside the loose tube protective layer main body 24, an open groove 22 is formed at the top, the loose tube protective layer main bodies 24 at two ends of the open groove 22 are connected with two compression components 21, the V-shaped bottom of the connecting rib 33 and the core-shaped bottom of the loose tube protective layer 2 point to the cable center under no pressure, the width of the open groove 22 is smaller than the width of the loose tube 3 under no pressure, the angle formed by the bottom edge of the connecting rib 33 is larger than the angle formed by the inner wall of the two compression components 21 formed by the inner side of the two outer sheath protective layers 24, the outer sheath protective layer 1 and the core-shaped bottom of the loose tube protective layer 2, the optical cable, the outer sheath 2 is spaced from the inner wall of the outer sheath 12 of the second cavity 12, the adjacent loose tube main body, the second cavity 12, the inner wall 12 of the loose tube 2, the adjacent limiting component 12 is disposed on the limiting component, the inner wall 12, the limiting unit 12, the inner wall 12 of the loose tube 2, the limiting component is disposed on the limiting unit 12, the inner wall 12 is disposed on the inner wall 12 of the loose tube 12, the limiting unit 12 is disposed on the inner wall 12 of the loose tube 12, the limiting unit 12, the loose tube 12, the section of the central stabilizing component 6 is in a star shape, and the loose tube protective layer 2 is inserted into the intersection of each corresponding star-shaped branch.
The layer stranded optical cable with the heart-shaped unit is characterized in that the electric unit 7 is made of copper or aluminum.
The optical cable of this embodiment can transmit light signal and signal of telecommunication simultaneously, and light unit 4 and electric unit 7 keep apart each other simultaneously, and the distance is far away, and the heat that electric unit 7 during operation gived off can not influence light unit 4's normal operating, and the heat that electric unit 7 gived off simultaneously can also be through outside the open slot 22 effluvium optical cable.
The layer-stranded optical cable having a core unit according to any of the above embodiments, wherein the connecting rib 33 has thick ends and thin middle portions.
A layer stranded optical cable having a core unit according to any of the above embodiments, wherein the loose tube protective layer main body 24 is thin at both ends and thick in the middle.
The layer-stranded optical cable with the heart-shaped unit is characterized in that the outer sheath 1 is made of high-density polyethylene.
The layer-stranded optical cable with the heart-shaped units is characterized in that the material of the loose tube 3 is polybutylene terephthalate.
The layer-stranded optical cable with the heart-shaped unit is characterized in that the material of the loose tube protective layer 2 is thermoplastic polyester elastomer.
The layer-stranded optical cable with the heart-shaped unit is characterized in that the optical unit 4 is a G.652 type optical fiber, a G.653 type optical fiber, a G.654 type optical fiber, a G.655 type optical fiber, a G.656 type optical fiber, a G.657 type optical fiber, an A1a type optical fiber, an A1b type optical fiber or an A1c type optical fiber.
In the invention, when the optical cable is stressed at the position corresponding to the limiting part 12, the limiting part 12 downwards extrudes the side walls of the loose tube protective layers 2 at two sides, the loose tube protective layers 2 are inwards contracted to extrude the loose tube 3, the connecting ribs 33 of the loose tube 3 are contracted towards the middle, and the external pressure is absorbed through the elastic deformation of the loose tube protective layers 2 and the connecting ribs 33 to achieve the effect of protecting the loose tube 3; when the optical cable is under pressure at the position corresponding to the limiting groove 13, the loose tube protective layers 2 at the stress position are spread, the loose tube protective layers 2 at two sides are extruded towards two sides, the loose tube protective layers 2 at two sides are contracted inwards, the loose tube 3 is extruded, the connecting rib 33 of the loose tube 3 is contracted towards the middle, and the loose tube 3 is extruded downwards into the lower part of the loose tube protective layer 2, so that the compression resistance of the optical cable is further improved, and the effect of protecting the loose tube 3 is achieved by absorbing external pressure through elastic deformation of the loose tube protective layers 2 and the connecting rib 33; the elasticity of the compression part 21 itself can also provide a certain pressure resistance for the optical cable; in the invention, the pressure applied on the optical cable is absorbed by the deformation of the loose tube protective layer 2 and the connecting ribs 33, so that the shape of the loose tube main body 31 is maintained to the maximum extent, and finally, the optical unit in the loose tube main body 31 is protected from being influenced.
A technician tests the compressive resistance of the optical cable of the embodiment 1 of the invention and compares the test with the compressive resistance of a common layer stranded optical cable sample, wherein the common layer stranded optical cable sample is a GYTY structure recommended in YD/T901, and the core number is 48 cores; the outer protective layer main bodies of the sample and the common layer stranded optical cable sample are both 2.0mm in thickness, the loose tube main body is both 0.4mm in thickness, and the pressure value at the position of 0.03dB/mm of additional attenuation of the optical fiber is tested.
The following test results were obtained:
through a comparative test, the compression resistance of the optical cable is 123% higher than that of a common layer stranded optical cable.
The invention solves the problems that the loose tube main body is easy to deform when the optical cable is under stronger pressure in the prior art, so that fiber breakage or additional attenuation is increased, the position of the loose tube is not fixed, and the vibration performance is poor.
The above-described embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a layer stranded cable with heart-shaped unit has outer jacket (1) and at least three loose tube (3), its characterized in that loose tube (3) comprise two loose tube main parts (31), form two second in loose tube main part (31) and hold chamber (32), be equipped with between loose tube main part (31) splice bar (33), splice bar (33) are the V font, loose tube (3) still are equipped with loose tube protective layer (2) outward, and loose tube protective layer (2) comprises loose tube protective layer main part (24), loose tube protective layer main part (24) are open-ended heart shape, and inside first appearance chamber (23) that forms of loose tube protective layer main part (24), loose tube protective layer main part (24) top form open slot (22), loose tube protective layer main part (24) at open slot (22) both ends are connected with two compression parts (21), the V font bottom of splice bar (33) and the directional cable center in the heart shape bottom of loose tube protective layer (2), under the non-pressure, the width of open slot (22) is less than the width of sleeve tube (3), the outer jacket main part (11) inner wall is greater than two outer jacket shape angle formation inner wall (11) of open slot (11) and the spacing angle of outer jacket main part (11) form by the spacing inner side of outer jacket (11), form spacing groove (13) between two adjacent spacing parts (12), spacing part (12) card is gone into between two adjacent loose tube protective layers (2), and loose tube protective layer (2) upper portion is located corresponding spacing groove (13), the second holds the intracavity and is equipped with an at least communication part (32), the heart-shaped bottom of all loose tube protective layers (2) is assembled the department and is equipped with a central stabilizing element (6), laminating of all compression part (21) topside and outer jacket main part (11) inner wall, and be located same circumference.
2. The layer-stranded optical cable having a core unit according to claim 1, wherein the central stabilizing member (6) has a star-shaped cross-section, and the loose tube protective layer (2) is inserted into the intersection of the branches of the corresponding star.
3. The stranded optical cable having a core unit according to claim 1, wherein the central stabilizing member (6) has a circular cross-section, and the core-shaped bottom of the loose tube protective layer (2) has a circular arc shape, the circular arc surface being in contact with the surface of the central stabilizing member (6).
4. A layer stranded cable having a heart shaped element according to claim 1 or claim 2 or claim 3 wherein an external strength member (5) is provided in each of said position limiting members (12).
5. A layer stranded optical cable having a heart shaped unit according to claim 4, wherein said joint rib (33) is thick at both ends and thin in the middle.
6. A stranded optical cable having a core unit according to claim 5, wherein said loose tube protective layer main body (24) is thin at both ends and thick in the middle.
7. A layer stranded optical cable having a heart shaped unit according to claim 6, characterized in that the material of said loose tube (3) is polybutylene terephthalate.
8. The stranded optical cable having a heart-shaped element according to claim 7, wherein the communication component in the second cavity (32) is an optical element.
9. The stranded optical cable having a heart-shaped element according to claim 7, wherein the communication part in the second cavity (32) of one side is an optical element and the communication part in the second cavity (32) of the other side is an electrical element (7).
10. The stranded optical cable having a core unit according to claim 9, wherein said optical unit (4) is a g.652 type optical fiber or a g.653 type optical fiber or a g.654 type optical fiber or a g.655 type optical fiber or a g.656 type optical fiber or a g.657 type optical fiber or an A1a type optical fiber or an A1b type optical fiber or an A1c type optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111002944.9A CN113655579B (en) | 2021-08-30 | 2021-08-30 | Layer stranded optical cable with heart-shaped unit |
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| CN202111002944.9A CN113655579B (en) | 2021-08-30 | 2021-08-30 | Layer stranded optical cable with heart-shaped unit |
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| CN113655579B true CN113655579B (en) | 2023-03-03 |
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| CN114545578B (en) * | 2022-02-25 | 2023-08-01 | 长飞光电线缆(苏州)有限公司 | Withstand voltage protection against rodents optical cable |
| CN117741883B (en) * | 2024-02-19 | 2024-05-03 | 江苏南方通信科技有限公司 | Layer-twisted type outdoor optical cable |
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| CN110824649A (en) * | 2019-12-17 | 2020-02-21 | 常熟共益信息科技有限公司 | Novel resistance to compression optical cable or photoelectricity hybrid cable |
| CN211014753U (en) * | 2019-12-23 | 2020-07-14 | 常熟共益信息科技有限公司 | Framework type optical cable or cable for 5G information network |
| CN111751946A (en) * | 2020-08-07 | 2020-10-09 | 江苏长飞中利光纤光缆有限公司 | Layer-stranded ribbon optical cable with special-shaped structure |
| CN212321939U (en) * | 2020-08-22 | 2021-01-08 | 常熟高通智能装备有限公司 | High-strength optical cable |
| CN212540813U (en) * | 2020-08-15 | 2021-02-12 | 常熟高通智能装备有限公司 | Layer stranded type ribbon optical cable with pressure-resistant loose sleeve |
| CN212623256U (en) * | 2020-08-31 | 2021-02-26 | 常熟高通智能装备有限公司 | Optical cable with special-shaped protective sleeve |
| CN212647110U (en) * | 2020-08-22 | 2021-03-02 | 常熟高通智能装备有限公司 | Embedded compression-resistant optical cable |
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| JP5294585B2 (en) * | 2007-08-02 | 2013-09-18 | 株式会社フジクラ | Fiber optic cable |
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| CN110824649A (en) * | 2019-12-17 | 2020-02-21 | 常熟共益信息科技有限公司 | Novel resistance to compression optical cable or photoelectricity hybrid cable |
| CN211014753U (en) * | 2019-12-23 | 2020-07-14 | 常熟共益信息科技有限公司 | Framework type optical cable or cable for 5G information network |
| CN111751946A (en) * | 2020-08-07 | 2020-10-09 | 江苏长飞中利光纤光缆有限公司 | Layer-stranded ribbon optical cable with special-shaped structure |
| CN212540813U (en) * | 2020-08-15 | 2021-02-12 | 常熟高通智能装备有限公司 | Layer stranded type ribbon optical cable with pressure-resistant loose sleeve |
| CN212321939U (en) * | 2020-08-22 | 2021-01-08 | 常熟高通智能装备有限公司 | High-strength optical cable |
| CN212647110U (en) * | 2020-08-22 | 2021-03-02 | 常熟高通智能装备有限公司 | Embedded compression-resistant optical cable |
| CN212623256U (en) * | 2020-08-31 | 2021-02-26 | 常熟高通智能装备有限公司 | Optical cable with special-shaped protective sleeve |
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