CN217385924U - Communication optical cable - Google Patents
Communication optical cable Download PDFInfo
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- CN217385924U CN217385924U CN202222022604.9U CN202222022604U CN217385924U CN 217385924 U CN217385924 U CN 217385924U CN 202222022604 U CN202222022604 U CN 202222022604U CN 217385924 U CN217385924 U CN 217385924U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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Abstract
The utility model provides a communication optical cable belongs to the communication technology field. The communication optical cable comprises an outer sheath, a first water-blocking tape, an armor layer, an inner sheath, a second water-blocking tape, an anti-freezing layer, a third water-blocking tape and a cable core; the cable core includes sub-cable unit and central reinforcement, and the outside of central reinforcement is provided with many sub-cable units, and every sub-cable unit includes flame retardant coating, pine sleeve pipe and many optic fibre, and the flame retardant coating parcel is in the outside of pine sleeve pipe, and many optic fibre settings are in pine sleeve pipe. Can prevent through the armor that rodent from gnawing and stinging the destruction, make communication optical cable keep intact in communication performance in longer time under freezing condition through the antifreezing substance, can make every son cable unit keep intact in communication performance in longer time when the condition of a fire takes place through the flame retardant coating to make communication optical cable possess protection against rodents, prevent frostbite and fire-resistant function.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to a communication optical cable.
Background
Telecommunication cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups. The communication optical cable is a communication line which is formed by a cable core formed by a certain number of optical fibers according to a certain mode and is externally coated with a sheath and used for realizing optical signal transmission.
In the related art, the communication optical cable comprises an outer sheath, a fire-resistant layer, an inner sheath, loose tubes, colored optical fibers, cable paste and a central reinforcement, wherein the outer sheath is wrapped on the outer side of the fire-resistant layer, the central reinforcement is located in the circle center of the communication optical cable, a plurality of loose tubes are distributed on the periphery of the central reinforcement, the loose tubes are located between the central reinforcement and the inner sheath, and each loose tube is internally provided with the colored optical fibers.
However, in an icy environment in winter or when gnawing by rodents, the optical communication cable has a problem of communication interruption.
SUMMERY OF THE UTILITY MODEL
The utility model provides a communication optical cable to solve under the environment that freezes in winter or when gnawing by rodents, communication optical cable can appear the problem that the communication was interrupted.
The utility model provides a communication optical cable, which comprises an outer sheath, a first water-blocking tape, an armor layer, an inner sheath, a second water-blocking tape, an anti-freezing layer, a third water-blocking tape and a cable core;
the outer sheath is wrapped on the outer side of the first water-blocking tape, the first water-blocking tape is wrapped on the outer side of the armor layer, the armor layer is wrapped on the outer side of the inner sheath, and the armor layer is used for preventing rodents from being bitten;
the second water-blocking tape is wound on the outer side of the anti-freezing layer, the anti-freezing layer is wound on the outer side of the third water-blocking tape, the third water-blocking tape is wound on the outer side of the cable core, and the anti-freezing layer is used for preventing the communication optical cable from being frozen in winter;
the cable core comprises a sub-cable unit and a central reinforcing piece, the central reinforcing piece is located in the center of the communication optical cable, a plurality of sub-cable units are arranged on the outer side of the central reinforcing piece, each sub-cable unit comprises a fire-resistant layer, a loose tube and a plurality of optical fibers, the fire-resistant layer wraps the outer side of the loose tube, and the optical fibers are arranged in the loose tube.
In one possible implementation manner, the outer sheath is a low-smoke halogen-free flame-retardant outer sheath, the thickness of the low-smoke halogen-free flame-retardant outer sheath is larger than 1.6mm, and the outer diameter of the low-smoke halogen-free flame-retardant outer sheath is 22.4 mm-24.4 mm.
In one possible implementation manner, the wrapping angles of the first water-blocking tape, the second water-blocking tape and the third water-blocking tape are all 15-25 degrees, and the overlapping rates of the first water-blocking tape, the second water-blocking tape and the third water-blocking tape are all 15-25%;
the width of the first water-blocking tape is 30mm, the width of the second water-blocking tape is 24mm, and the width of the third water-blocking tape is 24 mm.
In one possible implementation, the armor layer includes a plurality of glass fiber reinforced plastic rods, and the plurality of glass fiber reinforced plastic rods are twisted on the outer side of the inner sheath.
In one possible implementation mode, the inner sheath is a low-smoke halogen-free flame-retardant inner sheath, the thickness of the low-smoke halogen-free flame-retardant inner sheath is greater than 1mm, and the outer diameter of the low-smoke halogen-free flame-retardant inner sheath is 16.4 mm-18 mm.
In one possible implementation manner, the anti-freezing layer is a high-elasticity foamed rubber belt, and the high-elasticity foamed rubber belt longitudinally wraps the outer side of the third water blocking belt.
In one possible implementation manner, the fire-resistant layer is a mica tape, and the mica tape is wrapped on the outer side of the loose tube;
the width of the mica tape is 3 mm-4 mm, and the thickness of the mica tape is 0.05 mm-0.1 mm.
In one possible implementation manner, the sub-cable unit further includes a fiber paste, the fiber paste is filled in the loose tube, and the wall thickness of the loose tube is 0.2mm to 0.5 mm.
In one possible implementation manner, the cable core further includes a water blocking yarn, the water blocking yarn is longitudinally wrapped outside the central reinforcement, and the water blocking yarn is disposed in a gap defined by the central reinforcement and the sub-cable unit.
In one possible implementation, the optical fiber is a colored optical fiber.
The utility model provides a pair of communication optical cable can prevent through the armor that rodent from gnawing and stinging the destruction, makes communication optical cable communication performance in the longer time under the condition of freezing keep intact through the antifreezing solution, can make every son cable unit communication performance in the longer time keep intact when the condition of a fire takes place through the flame retardant coating to make communication optical cable possess protection against rodents, prevent frostbite and fire-resistant function.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a communication optical cable according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a sub-cable unit in the optical communication cable provided in fig. 1.
Description of reference numerals:
10-an outer sheath;
20-a first water-blocking tape;
30-an armor layer;
40-an inner sheath;
50-a second water-blocking tape;
60-an anti-freezing layer;
70-a third water-blocking tape;
80-a sub-cable unit;
81-refractory layer;
82-loose tube;
83-an optical fiber;
84-fiber paste;
90-a central stiffener;
91-Water blocking yarn.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the related art, the communication optical cable comprises an outer sheath, a fire-resistant layer, an inner sheath, loose tubes, colored optical fibers, cable paste and a central reinforcement, wherein the outer sheath is wrapped on the outer side of the fire-resistant layer, the central reinforcement is located in the circle center of the communication optical cable, a plurality of loose tubes are distributed on the periphery of the central reinforcement, the loose tubes are located between the central reinforcement and the inner sheath, and each loose tube is internally provided with the colored optical fibers. However, when the communication optical cable is laid in a communication pipeline or a cable trench with accumulated water, in an environment frozen in winter, the frozen ice extrudes the communication optical cable to increase optical fiber loss, so that data loss is caused, and the problem of communication interruption can occur; in addition, when the communication optical cable is laid in a communication pipeline or a cable trench with accumulated water, the problem of communication interruption can occur when the communication optical cable is bitten and damaged by rodents.
In order to solve the problem, the utility model provides a communication optical cable can prevent through the armor that the rodent from gnawing and stinging the destruction, makes communication optical cable communication performance in the longer time under the condition of freezing keep intact through the antifreezing substance, can make every sub-cable unit communication performance in the longer time when the condition of a fire takes place keep intact through the flame retardant coating to make communication optical cable possess protection against rodents, prevent frostbite and fire-resistant function.
The communication optical cable provided by the embodiment of the present invention is described in detail with reference to the following specific embodiments.
Fig. 1 is a schematic structural diagram of a communication optical cable according to an embodiment of the present invention; fig. 2 is a schematic structural view of a sub-cable unit in the optical communication cable provided in fig. 1.
As shown in fig. 1, an embodiment of the present invention provides a communication optical cable, which includes an outer sheath 10, a first water-blocking tape 20, an armor layer 30, an inner sheath 40, a second water-blocking tape 50, an anti-freezing layer 60, a third water-blocking tape 70, and a cable core. The outer sheath 10 wraps the first water-blocking tape 20, the first water-blocking tape 20 wraps the armor layer 30, the armor layer 30 wraps the inner sheath 40, the inner sheath 40 wraps the second water-blocking tape 50, the second water-blocking tape 50 wraps the anti-freezing layer 60, the anti-freezing layer 60 wraps the third water-blocking tape 70, and the third water-blocking tape 70 wraps the cable core.
Wherein, the outer sheath 10 can be made of low-smoke halogen-free flame-retardant material. In other implementations, the material of the outer sheath 10 may also be a flame retardant polyolefin material. By the arrangement, the outer sheath 10 has flame retardant property, so that the communication optical cable can be delayed from burning from outside to inside, and the flame retardant and fire resistant properties of the communication optical cable are further enhanced.
The outer sheath 10 is generally annular in shape. The thickness and outer diameter of the outer sheath 10 are determined as required, and are not specifically set herein. Optionally, the thickness of the outer sheath 10 is greater than 1.6mm, and the outer diameter of the outer sheath 10 is 22.4mm to 24.4 mm.
In an optional embodiment, the outer sheath 10 is a low-smoke halogen-free flame-retardant outer sheath, the thickness of the low-smoke halogen-free flame-retardant outer sheath is greater than 1.6mm, and the outer diameter of the low-smoke halogen-free flame-retardant outer sheath is 22.4 mm-24.4 mm.
The outside of the armor layer 30 is wrapped with the first water blocking tape 20 to block water. The first water blocking tape 20 may be formed by a single-sided composition of a polymer material (such as polyethylene terephthalate) and a high water absorption material in the related art, wherein the surface of the high water absorption material is rough. The first water blocking tape 20 may also be made of other polymer materials with excellent water blocking characteristics. In this embodiment, the types of the polymer material and the high water absorbing material are not further limited.
The width of the first water blocking tape 20 is determined according to need, and is not specifically set herein. Optionally, the width of the first water-blocking tape 20 can be 29.5 mm-30.5 mm, the thickness is 0.15 mm-0.2 mm, the water absorption expansion rate is not less than 6mm/min, and the tensile strength is 15N/cm-30N/cm; short term (e.g., within 20 s) heat stability temperature of 230 ℃ to 250 ℃ and transverse shrinkage of no more than 25%.
The inner sheath 40 is generally annular in shape. The thickness and outer diameter of the inner sheath 40 are determined as needed, and are not specifically set herein. Optionally, the thickness of the inner sheath 40 is greater than 1mm, and the outer diameter of the inner sheath 40 is 16.4mm to 18 mm.
In an alternative embodiment, the inner sheath 40 is a low-smoke halogen-free flame-retardant inner sheath, the thickness of the low-smoke halogen-free flame-retardant inner sheath is greater than 1mm, and the outer diameter of the low-smoke halogen-free flame-retardant inner sheath is 16.4mm to 18 mm.
And the second water blocking tape 50 wraps the outer side of the anti-freezing layer 60 to block water. The second water blocking tape 50 may be formed by a single-sided composition of a polymer material (such as polyethylene terephthalate) and a high water absorption material in the related art, wherein the surface of the high water absorption material is rough. The second water blocking tape 50 may also be made of other polymer materials with excellent water and oil blocking properties. In this embodiment, the types of the polymer material and the high water absorbing material are not further limited.
The width of the second water blocking tape 50 is determined according to need, and is not specifically set herein. Optionally, the width of the second water-blocking tape 50 can be 23.5 mm-24.5 mm, the thickness is 0.15 mm-0.2 mm, the water absorption expansion rate is not less than 6mm/min, and the tensile strength is 15N/cm-30N/cm; short term (e.g., within 20 s) heat stability temperature of 230 ℃ to 250 ℃ and transverse shrinkage of no more than 25%.
The freezing prevention layer 60 is used to prevent the communication optical cable from being frozen in winter. The material of antifreeze layer 60 can be foam rubber. The foamed rubber has the characteristics of light weight, excellent heat insulation performance, impact resistance and elastic deformation resistance, so that the communication performance of the communication optical cable is kept intact under the freezing condition.
And the outer side of the cable core is wrapped with a third water blocking tape 70 for water blocking. The third water blocking tape 70 may be formed by a single-sided composition of a polymer material (such as polyethylene terephthalate) and a high water absorption material in the related art, wherein the surface of the high water absorption material is rough. The third water blocking tape 70 may also be made of other polymer materials with excellent water and oil blocking properties. In this embodiment, the types of the polymer material and the high water absorbing material are not further limited.
The width of the third water blocking tape 70 is determined according to necessity, and is not specifically set herein. Optionally, the width of the third water-blocking tape 70 may be 23.5mm to 24.5mm, the thickness may be 0.15mm to 0.2mm, the water absorption expansion rate is not less than 6mm/min, and the tensile strength is 15N/cm to 30N/cm; short term (e.g., within 20 s) heat stability temperature of 230 ℃ to 250 ℃ and transverse shrinkage of no more than 25%.
The cable core includes sub cable unit 80 and central reinforcement 90, and central reinforcement 90 is located communication optical cable's center, and the outside of central reinforcement 90 is provided with many sub cable units 80, and every sub cable unit 80 includes flame retardant coating 81, pine sleeve pipe 82 and many optic fibre 83, and the outside at pine sleeve pipe 82 is wrapped up in flame retardant coating 81, and many optic fibre 83 set up in pine sleeve pipe 82.
The fire-resistant layer 81 may allow each sub-cable unit 80 to maintain its communication performance for a long time when a fire occurs. The material of the fire-resistant layer 81 may be a material having heat insulation and fire-proof functions. The thickness of the refractory 81 is determined as required and is not specifically set herein. Alternatively, the thickness of the refractory layer 81 may be 0.05mm to 0.1 mm.
The material of the loose tube 82 may be one of polybutylene terephthalate, polypropylene or thermoplastic polyester elastomer. The thickness of the loose tube 82 is determined as needed, and is not specifically set herein. Optionally, the loose tube 82 has a thickness of 0.2mm to 0.5 mm.
The number of optical fibers 83 may be as desired and is not specifically set forth herein. The number of optical fibers 83 in each sub-cable unit 80 may be the same or different. Preferably, the number of optical fibers 83 in each sub-cable unit 80 is the same.
The central reinforcing member 90 may be a non-metallic member or a metallic member. In this embodiment, to reduce the weight of the optical communication cable, the central strength member 90 may be a non-metallic member. The central stiffener 90 may be cylindrical in shape.
The embodiment of the utility model provides a communication optical cable can prevent through armor 30 that rodent from gnawing and stinging the destruction, makes communication optical cable communication performance in the longer time under the condition of freezing keep intact through anti-icing 60, can make every sub-cable unit communication performance in the longer time when the condition of a fire takes place keep intact through flame retardant coating 81 to make communication optical cable possess protection against rodents, prevent frostbite and fire-resistant function.
Optionally, as shown in fig. 1, the wrapping angles of the first water-blocking tape 20, the second water-blocking tape 50 and the third water-blocking tape 70 are all 15 to 25 degrees, and the overlapping rates of the first water-blocking tape 20, the second water-blocking tape 50 and the third water-blocking tape 70 are all 15 to 25 percent.
In order to ensure the flatness of the first water-blocking tape 20, the wrapping angle of the first water-blocking tape 20 is 15-25 degrees, that is, the horizontal included angle between the armor layer 30 and the first water-blocking tape 20 is 15-25 degrees. In order to ensure that the first water blocking tape 20 is not wrinkled, the overlapping rate of the first water blocking tape 20 is 15% to 25%.
In order to ensure the flatness of the second water-blocking tape 50, the wrapping angle of the second water-blocking tape 50 is 15-25 degrees, namely the horizontal included angle between the anti-freezing layer 60 and the second water-blocking tape 50 is 15-25 degrees. In order to ensure that the second water blocking tape 50 is not wrinkled, the overlapping rate of the second water blocking tape 50 is 15% to 25%.
In order to ensure the flatness of the third water-blocking tape 70, the wrapping angle of the third water-blocking tape 70 is 15-25 degrees, namely the horizontal included angle between the cable core and the third water-blocking tape 70 is 15-25 degrees. In order to ensure that the third water blocking tape 70 is not wrinkled, the overlapping rate of the third water blocking tape 70 is 15% to 25%.
In an alternative embodiment, the width of the first water blocking tape 20 is 30mm, the width of the second water blocking tape 50 is 24mm, and the width of the third water blocking tape 70 is 24 mm. The wrapping angle of the first water-blocking tape 20 is 20 degrees, and the overlapping rate of the first water-blocking tape 20 is 20 percent; the wrapping angle of the second water-blocking tape 50 is 18 degrees, and the overlapping rate of the second water-blocking tape 50 is 18 percent; the wrapping angle of the third water-blocking tape 70 is 15 degrees, and the overlapping rate of the third water-blocking tape 70 is 15 percent.
Alternatively, as shown in FIG. 1, armor 30 comprises a plurality of fiberglass reinforced plastic rods stranded on the outside of inner jacket 40.
It should be noted that, compared with the communication optical cable in the related art in which the chemical rat-proof agent is added in the outer sheath, the communication optical cable of the present application employs a plurality of glass fiber reinforced plastic rods, which is not only environment-friendly and pollution-free, but also has a good rat-proof effect. Compared with the metal adopted by the material of the armor layer of the communication optical cable in the related technology, the communication optical cable adopts a plurality of glass fiber reinforced plastic rods, so that the communication optical cable is lighter and the mechanical strength is higher.
The shape of the glass fiber reinforced plastic rod can be cylindrical or triangular, and is not specifically arranged here. The number of the glass fiber reinforced plastic rods may be determined as needed, and is not specifically set herein.
In an alternative embodiment, the fiberglass reinforced plastic rod is cylindrical in shape and has an outer diameter of 1.4mm to 1.5 mm. The number of the glass fiber reinforced plastic rods is 30, and the 30 glass fiber reinforced plastic rods are twisted on the outer side of the inner sheath 40.
Optionally, the anti-freezing layer 60 is a high-elasticity foamed rubber belt longitudinally wrapped on the outer side of the third water blocking belt 70. The high-elasticity foamed rubber belt has the characteristics of light weight, excellent heat insulation performance, impact resistance and elastic deformation resistance, and can ensure that the communication optical cable can keep normal communication of the optical fiber 83 under the freezing condition of 0-40 ℃.
Alternatively, as shown in fig. 1 and 2, the refractory layer 81 is a mica tape wrapped around the outside of the loose tube 82. Through the mica tape, the low-smoke halogen-free flame-retardant outer sheath and the low-smoke halogen-free flame-retardant outer sheath, the communication performance of the communication optical cable can be kept intact in the process of keeping the flame temperature at 750 ℃ for 90 minutes and stopping the fire and cooling for 15 minutes.
Note that the additional attenuation of the fiber 83 at a wavelength of 1550nm is less than or equal to 1dB/km during the duration of the burn and during the flame-out latency.
Wherein, the width of the mica tape can be 3 mm-4 mm, and the thickness of the mica tape can be 0.05 mm-0.10 mm.
In order to make the moisture content of the mica tape low enough, avoid the occurrence of the situation that the dielectric constant and the dielectric loss of the communication cable are increased rapidly due to the fact that the communication cable is affected with damp, and improve the signal transmission performance of the communication cable, in some embodiments, after the loose tube 82 is wrapped around the mica tape, dehumidification can be performed. The dehumidification treatment specifically includes: and (3) placing the loose tube 82 wrapped with the mica tape in a high-temperature box at the temperature of 50-70 ℃ for 10-24 hours for dehumidification treatment.
Optionally, as shown in fig. 2, the sub-cable unit 80 further includes a fiber paste 84, and the fiber paste 84 is filled in the loose tube 82. The fiber paste 84 is used to ensure water-blocking performance between the plurality of optical fibers 83 in the loose tube 82.
Optionally, to facilitate identification of the plurality of optical fibers 83 in the loose tube 82, the optical fibers 83 are colored optical fibers.
Wherein, the colored optical fiber can adopt a small-sized optical fiber with the diameter of the coating layer between 170 and 210 μm, and the diameter of the optical fiber 83 after being colored can be between 235 and 255 μm.
The optical fiber 83 may be colored in its entirety or partially. The color of the optical fiber 83 includes, but is not limited to, blue, orange, green, brown, gray, white, red, black, yellow, purple, pink, and turquoise.
Alternatively, the identification of the plurality of optical fibers 83 may be variously labeled. In particular, the indicia may be a color bar or a color ring. The plurality of optical fibers 83 may be distinguished from the plurality of different optical fibers 83 by the shape of the color bars, the number of color bars, the shape of the color rings, the number of color rings, and the like.
Optionally, as shown in fig. 1, the cable core further includes a water blocking yarn 91, the water blocking yarn 91 is longitudinally wrapped outside the central reinforcing member 90, and the water blocking yarn 91 is disposed in a gap defined between the central reinforcing member 90 and the sub-cable unit 80. So set up, can improve communication optical cable's impervious water-proofness ability.
The number of the water blocking yarns 91 may be determined as required, and is not specifically set herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A communication optical cable is characterized by comprising an outer sheath, a first water-blocking tape, an armor layer, an inner sheath, a second water-blocking tape, an anti-freezing layer, a third water-blocking tape and a cable core;
the outer sheath is wrapped on the outer side of the first water-blocking tape, the first water-blocking tape is wrapped on the outer side of the armor layer, the armor layer is wrapped on the outer side of the inner sheath, and the armor layer is used for preventing rodents from being bitten;
the inner sheath is wrapped on the outer side of the second water-blocking tape, the second water-blocking tape is wrapped on the outer side of the anti-freezing layer, the anti-freezing layer is wrapped on the outer side of the third water-blocking tape, the third water-blocking tape is wrapped on the outer side of the cable core, and the anti-freezing layer is used for preventing the communication optical cable from being frozen in winter;
the cable core comprises a sub-cable unit and a central reinforcing piece, the central reinforcing piece is located in the center of the communication optical cable, a plurality of sub-cable units are arranged on the outer side of the central reinforcing piece, each sub-cable unit comprises a fire-resistant layer, a loose tube and a plurality of optical fibers, the fire-resistant layer wraps the outer side of the loose tube, and the optical fibers are arranged in the loose tube.
2. The communication optical cable according to claim 1, wherein the outer sheath is a low-smoke halogen-free flame-retardant outer sheath, the thickness of the low-smoke halogen-free flame-retardant outer sheath is greater than 1.6mm, and the outer diameter of the low-smoke halogen-free flame-retardant outer sheath is 22.4 mm-24.4 mm.
3. The communication optical cable according to claim 1, wherein wrapping angles of the first water-blocking tape, the second water-blocking tape and the third water-blocking tape are all 15-25 degrees, and overlapping rates of the first water-blocking tape, the second water-blocking tape and the third water-blocking tape are all 15-25%;
the width of the first water-blocking tape is 30mm, the width of the second water-blocking tape is 24mm, and the width of the third water-blocking tape is 24 mm.
4. The optical communication cable of claim 1, wherein the armor layer comprises a plurality of glass fiber reinforced plastic rods stranded on an outer side of the inner jacket.
5. The communication optical cable according to claim 1, wherein the inner sheath is a low-smoke halogen-free flame-retardant inner sheath, the thickness of the low-smoke halogen-free flame-retardant inner sheath is greater than 1mm, and the outer diameter of the low-smoke halogen-free flame-retardant inner sheath is 16.4 mm-18 mm.
6. The optical communication cable according to claim 1, wherein the anti-freezing layer is a high-elasticity foamed rubber tape longitudinally wrapped outside the third water-blocking tape.
7. The optical communication cable according to claim 1, wherein the fire-resistant layer is a mica tape wrapped around the outside of the loose tube;
the width of the mica tape is 3 mm-4 mm, and the thickness of the mica tape is 0.05 mm-0.1 mm.
8. The optical communication cable according to any one of claims 1 to 7, wherein the sub-cable unit further comprises a fiber paste filled in the loose tube, and the wall thickness of the loose tube is 0.2mm to 0.5 mm.
9. The optical communication cable of any one of claims 1 to 7, wherein the core further comprises water-blocking yarns longitudinally wrapped outside the central strength member, the water-blocking yarns being disposed in a gap defined between the central strength member and the sub-cable units.
10. The optical communication cable of any one of claims 1 to 7, wherein the optical fiber is a colored optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222022604.9U CN217385924U (en) | 2022-08-03 | 2022-08-03 | Communication optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222022604.9U CN217385924U (en) | 2022-08-03 | 2022-08-03 | Communication optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217385924U true CN217385924U (en) | 2022-09-06 |
Family
ID=83092337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222022604.9U Active CN217385924U (en) | 2022-08-03 | 2022-08-03 | Communication optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217385924U (en) |
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2022
- 2022-08-03 CN CN202222022604.9U patent/CN217385924U/en active Active
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