CN217467292U - Enhanced air-blowing optical cable - Google Patents
Enhanced air-blowing optical cable Download PDFInfo
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- CN217467292U CN217467292U CN202222201512.7U CN202222201512U CN217467292U CN 217467292 U CN217467292 U CN 217467292U CN 202222201512 U CN202222201512 U CN 202222201512U CN 217467292 U CN217467292 U CN 217467292U
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Abstract
The utility model provides an enhancement mode air-blowing optical cable relates to optical cable technical field, in order to solve the problem that air-blowing optical cable intensity is low, enhancement mode air-blowing optical cable includes from interior inner core (1), fire-retardant layer (2) and oversheath (3) of establishing of cover in proper order, and inner core (1) contains interior oversheath and establishes cable core (11) and enhancement layer (12), and cable core (11) contain optical fiber bundle unit (111) and reinforcing element (112), and optical fiber bundle unit (111) contain optic fibre (113) and optical fiber cover (114) that the oversheath was established. Rigidity and tensile strength of enhancement mode air-blown optical cable have obvious improvement, are fit for quick long distance air-blown laying, have reduced the micro cable risk of buckling, have improved construction and have laid efficiency, and thermal-insulated fire resistance is good moreover.
Description
Technical Field
The utility model relates to an optical cable technical field, specific is an enhancement mode air-blowing optical cable.
Background
The air-blown micro-tube micro-cable technology is used as a mature optical cable network laying technology, can effectively solve the problems of high one-time performance investment cost, short communication pipeline resources and the like of operators, and has large-scale application in access networks, metropolitan area networks, communication trunk networks and the like. In the construction process of an optical fiber broadband network, along with the rapid development of FTTH (fiber to the home), in the aspect of building comprehensive wiring, an air-blowing optical fiber unit has obvious advantages compared with a traditional rubber-insulated-wire optical cable, and the air-blowing optical fiber unit is small in size, light in weight, simple and easy in construction equipment, capable of being laid by air-blowing rapidly, capable of improving the construction laying efficiency of the optical cable, convenient for pipeline expansion, capable of reducing the workload of ditching, digging and the like, and capable of saving construction cost, so that the air-blowing optical fiber unit is often used for the last kilometer access of an optical fiber to home network.
The existing air-blowing optical cable generally only has a protective sleeve protective layer and does not have a reinforcing element, the rigidity is insufficient, the tensile strength and the side pressure resistance of the optical cable are poor, and the micro cable is easily bent due to the too high air-blowing speed or the too high pipeline pressure in the air-blowing laying process, so that the fiber breakage is caused, and the optical cable is damaged.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that air-blowing optical cable intensity is low, the utility model provides an enhancement mode air-blowing optical cable, the rigidity and the tensile strength of enhancement mode air-blowing optical cable have obvious improvement, are fit for quick long distance air-blowing to lay, have reduced the risk of micro-cable buckling, have improved the construction and have laid efficiency, and thermal-insulated refractiveness is good moreover.
The utility model provides a technical scheme that its technical problem adopted is:
an enhanced air-blowing optical cable comprises an inner core, a flame-retardant layer and an outer sheath which are sequentially sleeved from inside to outside, wherein the inner core comprises an inner sleeve and an outer sleeve, a cable core and an enhancement layer are arranged on the inner sleeve, the cable core comprises an optical fiber bundle unit and a reinforcement element, and the optical fiber bundle unit comprises an optical fiber and an optical fiber sleeve which are sleeved from inside to outside.
The flame-retardant layer is formed by winding a mica tape, and the thickness of the flame-retardant layer is 0.5mm-1 mm.
The optical fiber bundle unit and the reinforcing element are sleeved with elastic deformation layers in a matching mode, and the elastic deformation layers are made of polyurethane or rubber.
The optical fiber bundle unit contains a plurality of optical fibers, the optical fibers are colored optical fibers, and the optical fibers contain optical fiber bodies and coating layers which are sleeved inside and outside.
The optical fiber bundle unit contains 2-12 optical fibers, the type of the optical fiber body is G.652 optical fiber or G.657 optical fiber, and the thickness of the coating layer is 180-256 μm.
The reinforcing element is a fiber reinforced plastic rod, the elastic modulus of the reinforcing element is greater than or equal to 54GPa, the tensile strength of the reinforcing element is greater than or equal to 1100MPa, and the deviation between the outer diameter of the reinforcing element and the outer diameter of the optical fiber bundle unit is less than or equal to 0.05 mm.
The reinforced layer is of a twisted structure of fibers and water-blocking yarns, the twisting mode of the fibers and the water-blocking yarns is S twisting, the twisting pitch of the fibers and the water-blocking yarns is 400-800 mm, the fibers are aramid fibers or glass fibers, the thickness of the reinforced layer is 0.1-0.2 mm, and when the fibers are aramid fibers, the specification of the aramid fibers is 800-1000D; when the fiber is glass fiber, the specification of the glass fiber is 600tex-1200 tex.
The reinforced layer is of a fiber stranded structure, the surface of the fiber is provided with water-blocking powder, the fiber is stranded in an S-stranded mode, the stranded pitch of the fiber is 400-800 mm, the fiber is aramid fiber or glass fiber, the thickness of the reinforced layer is 0.1-0.2 mm, and when the fiber is aramid fiber, the specification of the aramid fiber is 800D-1000D; when the fiber is glass fiber, the specification of the glass fiber is 600tex-1200 tex.
The reinforced layer is of a fiber twisted structure, the fiber is twisted in an S-twisted mode, the twisted pitch of the fiber is 400-800 mm, the fiber is water-blocking aramid fiber, the specification of the water-blocking aramid fiber is 800-1000D, and the thickness of the reinforced layer is 0.1-0.2 mm.
The outer sheath is made of flame-retardant polyethylene, and a plurality of convex edges are arranged on the outer surface of the outer sheath.
The utility model has the advantages that: compared with the traditional air-blowing optical cable, the resin-cured optical fiber bundle and the reinforcing element are adopted to strand the cable core, the rigidity of the optical cable is effectively improved, the reinforcing layer is coated, the tensile strength of the micro cable is further improved, the bending risk of the micro cable is reduced, the micro cable is suitable for quick long-distance air-blowing laying, the construction laying efficiency is improved, and the heat insulation and fire resistance are good.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic cross-sectional view of an enhanced air-blown optical cable of the present invention in example 1.
Fig. 2 is a schematic cross-sectional view of the reinforced air-blown optical cable of the present invention in example 2.
Fig. 3 is a schematic cross-sectional view of the reinforced air-blown fiber optic cable of the present invention in example 3.
Fig. 4 is a schematic cross-sectional view of an optical fiber.
FIG. 5 is a schematic view showing that the outer contour of the cross section of the elastic deformation layer is wavy.
Fig. 6 is a schematic perspective view of the enhanced air-blowing optical cable of the present invention.
Description of the reference numerals:
1. an inner core; 2. a flame retardant layer; 3. an outer sheath;
11. a cable core; 12. an enhancement layer;
31. a rib;
111. an optical fiber bundle unit; 112. a reinforcing element; 113. an optical fiber; 114. an optical fiber sleeve; 115. an optical fiber body; 116. a coating layer; 117. an elastic deformation layer;
121. water-blocking yarn; 122. a fiber.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
An enhanced air-blowing optical cable comprises an inner core 1, a flame-retardant layer 2 and an outer sheath 3 which are sequentially sleeved from inside to outside, wherein the inner core 1 comprises an inner sleeve and an outer sleeve which are provided with a cable core 11 and a reinforcing layer 12, the cable core 11 comprises an optical fiber bundle unit 111 and a reinforcing element 112 which are arranged side by side, and the optical fiber bundle unit 111 comprises an optical fiber 113 and an optical fiber sleeve 114 which are sleeved from inside to outside, as shown in figures 1 to 3.
The optical fiber bundle unit 111 contains 2 to 12 optical fibers 113 arranged side by side, the optical fibers 113 are colored optical fibers, and the optical fibers 113 contain optical fiber bodies 115 sleeved inside and outside and coating layers 116. The type of the optical fiber body 115 may be a g.652 optical fiber, the thickness of the coating layer 116 may be about 245 μm-255 μm, the color of the coating layer 116 includes, but is not limited to, blue, orange, green, heddle, gray, white, red, black, yellow, purple, pink, and turquoise, which may be selected according to practical applications, and the optical fiber 113 may also allow to use a natural color optical fiber instead of a certain number of colored optical fibers.
Or, the optical fiber 113 may be a small-sized optical fiber, for example, the type of the optical fiber body 115 may also be a g.657 optical fiber, the thickness of the coating layer 116 may be 180 μm to 200 μm, the number of cores of the optical fiber 113 may be increased under the same optical fiber bundle size, and the influence of bending on the optical fiber attenuation during the twisting process of the optical fiber bundle may be reduced.
The optical fiber sleeve 114 can be an ultraviolet light curing resin coating sleeve, under the control of constant tension uniform paying-off, a plurality of optical fibers 113 are integrally gathered and enter a die, the resin coating pressure is adjusted to ensure that the optical fibers 113 are uniformly coated by the resin to form the optical fiber sleeve 114, then the optical fiber bundle unit 111 is formed through ultraviolet light curing, the surface of the optical fiber bundle unit 111 is smooth, and the outer diameter of the optical fiber bundle unit 111 is round. The outer diameter of the optical fiber bundle unit 111 is 0.6mm-1.2mm, and for easy identification, a printing mark can be printed on the outer surface of the cured optical fiber bundle unit 111.
The material of the optical fiber sleeve 114 is an ultraviolet light curing resin, which can be a product in the prior art, and the ultraviolet light curing resin is composed of a photosensitive oligomer, a photosensitive monomer, a photoinitiator and an auxiliary agent. The ultraviolet light curing resin is coated outside the optical fiber 113 and is subjected to ultraviolet light curing to form a film; in order to ensure that the cured optical fiber bundle unit 111 and the reinforcing element 112 are twisted without surface resin damage or cracking, the optical fiber 113 should have good flexibility, and the ultraviolet light curing resin should have the characteristics of high viscosity and low modulus.
Preferably, the viscosity of the uv curable resin at 25 ℃ before curing is 4500mPa · S-5000 mPa · S, the elastic deformation of the uv curable resin after curing is less than or equal to 2.5%, the elastic modulus of the uv curable resin at 23 ℃ is 550mPa-750mPa, the elongation at break of the uv curable resin after curing is greater than or equal to 30%, and the minimum bending radius of the optical fiber bundle unit 111 is less than or equal to 5 times the outer diameter of the optical fiber bundle unit 111. And the ultraviolet curing resin has better strippable performance after being cured.
Alternatively, the optical fiber sleeve 114 may also be a loose tube, for example, the optical fiber sleeve 114 may be replaced by a secondary-coated PBT (polybutylene terephthalate) loose tube, that is, a secondary-coated PBT loose tube outside the optical fibers 113. The diameter of the PBT loose tube can be 0.9mm-1.2mm, and the loose tube can be filled with thixotropic fiber paste for water blocking, that is, the optical fiber sleeve 114 can be filled with thixotropic fiber paste for water blocking.
The cable core 11 comprises at least one optical fiber bundle unit 111 and at least one reinforcing element 112, the optical fiber bundle unit 111 and the reinforcing element 112 are twisted and molded, the twisting mode of the optical fiber bundle unit 111 and the reinforcing element 112 is S twisting, and the twisting pitch of the optical fiber bundle unit 111 and the reinforcing element 112 is 300mm-500 mm.
The reinforcing member 112 is a fiber-reinforced plastic rod, for example, the fiber-reinforced plastic rod is a glass fiber-reinforced plastic rod, the modulus of elasticity of the reinforcing member 112 is 50GPa or more, the tensile strength of the reinforcing member 112 is 1100MPa or more, the outer diameter of the reinforcing member 112 is substantially the same as the outer diameter of the optical fiber bundle unit 111, and the deviation of the outer diameter of the reinforcing member 112 from the outer diameter of the optical fiber bundle unit 111 is 0.05mm or less.
Or, the fiber reinforced plastic rod is an aramid fiber reinforced plastic rod, in this case, the elastic modulus of the reinforcing element 112 is greater than or equal to 54GPa, and the tensile strength of the reinforcing element 112 is greater than or equal to 1600 MPa. The outer diameter of the reinforcing member 112 is substantially the same as the outer diameter of the optical fiber bundle unit 111, and the deviation of the outer diameter of the reinforcing member 112 from the outer diameter of the optical fiber bundle unit 111 is less than or equal to 0.05 mm.
The reinforcing layer 12 can be a twisted structure of the fibers 122 and the water blocking yarns 121, the twisted mode of the fibers 122 and the water blocking yarns 121 is S twisted, the twisted pitch of the fibers and the water blocking yarns 121 is 400mm-800mm, the fibers 122 are aramid fibers or glass fibers, the specification of the aramid fibers is 800D-1000D, the specification of the glass fibers is 600tex-1200tex, and the thickness of the reinforcing layer 12 is 0.1mm-0.2 mm. And aramid fibers or glass fibers with different specifications and numbers can be adopted according to the requirement of the tensile force value of the optical cable under the condition of no application. The reinforcing layer 12 is formed by twisting the fiber and the water-blocking yarn 121 outside the cable core 11, and the whole structure of the reinforcing layer 12 coated on the cable core 11 is round in the twisting process.
The water-blocking yarn 121 is formed by compounding polyester fibers and a high-water-absorption material or a water-absorption swelling material, the linear density specification is 500m/kg-4500m/kg, the number of the yarn is 1-5, and it is guaranteed that under the condition that an optical cable is in a complete structure, a 3m sample is taken, and the tail end does not leak water after 24 hours under a water column of 1 m. The water blocking yarn 121 may be located between the adjacent two reinforcing members 112, between the adjacent two optical fiber bundle units 111, or between the adjacent reinforcing members 112 and the optical fiber bundle units 111 in the circumferential direction of the inner core 1.
Or, the reinforcing layer 12 is a twisted structure of the fibers 122, and the water blocking yarn 121 may be replaced by water blocking powder with high water absorption in the reinforcing layer 12, that is, the water blocking powder is uniformly coated on the surface of the fibers 122 in the twisting process of the cable core 11 and the reinforcing layer 12, and the surface of the fibers 122 is provided with the water blocking powder. The twisting mode of the fibers 122 in the reinforcing layer 12 is S twisting, the twisting pitch of the fibers is 400mm-800mm, the fibers 122 are aramid fibers or glass fibers, the specification of the aramid fibers is 800D-1000D, the specification of the glass fibers is 600tex-1200tex, and the thickness of the reinforcing layer 12 is 0.1mm-0.2 mm.
Or, the reinforcing layer 12 may adopt water-blocking aramid fibers instead of the fibers (aramid fibers or glass fibers) and the water-blocking yarns 121, the reinforcing layer 12 is a twisted structure of the fibers 122, the twisting manner of the fibers 122 is S-twisting, the twisting pitch of the fibers is 400mm to 800mm, the specification of the water-blocking aramid fibers is 800D to 1000D, and the thickness of the reinforcing layer 12 is 0.1mm to 0.2 mm.
In order to improve the water blocking performance of the enhanced air-blowing optical cable, the optical fiber bundle unit 111 and the reinforcing element 112 are respectively sleeved with an elastic deformation layer 117 in a matching manner, that is, the optical fiber bundle unit 111 and the reinforcing element 112 are respectively connected with the elastic deformation layer 117 in an inner-outer laminated manner, the elastic deformation layer 117 is made of polyurethane or rubber, the water blocking material in the reinforcing layer 12 can extrude the elastic deformation layer 117 after expanding in water, and the elastic deformation layer 117 is deformed to reduce the gap in the inner core 1, and it is further preferable that the outer contour of the cross section of the elastic deformation layer 117 is in a wavy line shape, as shown in fig. 5.
After the inner core 1 is manufactured, a mica tape layer is wound (namely wrapped) outside the inner core 1 to form the flame-retardant layer 2, the thickness of the flame-retardant layer 2 is 0.5mm-1.0mm, and the mica tape flame-retardant layer arranged outside the inner core 1 plays a role in heat insulation and fire resistance, so that the inner core 1 cannot be burnt out after a fire disaster is sent, and communication is cut off.
When extruding the outer sheath 3, an extrusion die is adopted, so that the surface of the outer sheath 3 presents regular concave-convex lines, such as the convex ribs 31. The outer sheath 3 can be made of low-friction flame-retardant polyethylene, so that the friction coefficient between the inner wall of the microtube and the surface of the optical cable sheath is reduced, the air blowing performance is improved, the flame retardant performance of the air blowing optical fiber unit is improved, and the application is safer. Further, the outer sheath 3 can also be made of polyethylene material containing laser marking powder, and the abrasion between the surface printing mark and the inner wall of the sub-pipe in the air blowing process is reduced by adopting the laser printing mark, so that the definition of the mark is improved, and the mark is convenient to identify.
Enhancement mode air-blown optical cable's overall dimension is less, is fit for air-blowing in the microtubule and lays, and the microtubule specification is external diameter 7.0mm, internal diameter 5.5mm or external diameter 5.0mm, internal diameter 3.5mm, and the air-blowing of micro-cable is once laid the distance and is greater than 1km, and the highest air-blowing speed can reach 70 m/min. The reinforced air-blown optical cable comprises one or two optical fiber bundle units 111 in a cable core 11, one or two reinforcing elements 112 in the cable core 11, and the total number of optical fibers 113 in the reinforced air-blown optical cable is 4-24 cores.
The following is a detailed description of the practical product example of the enhanced air-blowing optical cable of the present invention:
example 1
An enhanced air-blowing optical cable comprises an inner core 1, a flame-retardant layer 2 and an outer sheath 3 which are sequentially sleeved from inside to outside, wherein the inner core 1 comprises an inner sleeved cable core 11 and an outer sleeved cable core 12, the cable core 11 comprises an optical fiber bundle unit 111 and two reinforcing elements 112, and the optical fiber bundle unit 111 comprises an optical fiber 113 and an optical fiber sleeve 114 which are sleeved from inside to outside.
The optical fiber bundle unit 111 contains 4 optical fibers 113, one optical fiber bundle unit 111 and two reinforcing members 112 are twisted into a cable core 11, the reinforcing layer 12 contains aramid fibers (i.e., fibers 122) and water-blocking yarns 121, and polyethylene is extruded to form the outer sheath 3. Regular ribs 31 are arranged on the outer surface of the outer sheath 3, the height of each rib 31 is 0.1mm-0.3mm, the width of each rib 31 is 0.1mm-0.3mm, the distance between every two adjacent ribs 31 is 0.1mm-0.2mm, the cross sections of the ribs 31 are triangular, and the distances between every two adjacent ribs 31 are the same. The outer diameter of the optical fiber bundle unit 111 is 0.6mm-0.8mm, the reinforcing element 112 is a glass fiber reinforced plastic rod, the outer diameter of the reinforcing element 112 is 0.6mm-0.8mm, the wall thickness of the outer sheath 3 is 0.5mm-1.0mm, and the overall outer diameter of the reinforced air-blown optical cable is 2.5mm-3.6mm, as shown in fig. 1, 4 and 6.
Example 2
An enhanced air-blowing optical cable comprises an inner core 1, a flame-retardant layer 2 and an outer sheath 3 which are sequentially sleeved from inside to outside, wherein the inner core 1 comprises an inner sleeved cable core 11 and an outer sleeved cable core 12, the cable core 11 comprises an optical fiber bundle unit 111 and two reinforcing elements 112, and the optical fiber bundle unit 111 comprises an optical fiber 113 and an optical fiber sleeve 114 which are sleeved from inside to outside.
The optical fiber bundle unit 111 contains 6 optical fibers 113, one optical fiber bundle unit 111 and two reinforcing members 112 are twisted into a cable core 11, the reinforcing layer 12 contains aramid fibers (i.e., fibers 122) and water-blocking yarns 121, and polyethylene is extruded to form the outer sheath 3. Regular ribs 31 are arranged on the outer surface of the outer sheath 3, the height of each rib 31 is 0.1-0.3 mm, the width of each rib 31 is 0.1-0.3 mm, the distance between every two adjacent ribs 31 is 0.1-0.2 mm, the cross section of each rib 31 is rectangular, the corners of the rectangles are slightly chamfered to form radians, and the distances between every two adjacent ribs 31 are the same. The outer diameter of the optical fiber bundle unit 111 is 0.6mm-0.8mm, the reinforcing element 112 is a glass fiber reinforced plastic rod, the outer diameter of the reinforcing element 112 is 0.6mm-0.8mm, the wall thickness of the outer sheath 3 is 0.5mm-1.0mm, and the overall outer diameter of the reinforced air-blown optical cable is 2.5mm-3.6mm, as shown in fig. 2, 4 and 6.
Example 3
An enhanced air-blowing optical cable comprises an inner core 1, a flame-retardant layer 2 and an outer sheath 3 which are sequentially sleeved from inside to outside, wherein the inner core 1 comprises an inner sleeved cable core 11 and an outer sleeved cable core 12, the cable core 11 comprises an optical fiber bundle unit 111 and two reinforcing elements 112, and the optical fiber bundle unit 111 comprises an optical fiber 113 and an optical fiber sleeve 114 which are sleeved from inside to outside.
The optical fiber bundle unit 111 contains 8 optical fibers 113, one optical fiber bundle unit 111 and two reinforcing elements 112 are twisted into a cable core 11, the reinforcing layer 12 contains aramid fibers (i.e. fibers 122) and water-blocking yarns 121, and polyethylene is extruded to form the outer sheath 3. Regular ribs 31 are arranged on the outer surface of the outer sheath 3, the height of each rib 31 is 0.1mm-0.3mm, the width of each rib 31 is 0.1mm-0.3mm, the distance between every two adjacent ribs 31 is 0.1mm-0.2mm, the sections of the ribs 31 are arc-shaped, and the distances between every two adjacent ribs 31 are the same. The outer diameter of the optical fiber bundle unit 111 is 1.0mm-1.2mm, the reinforcing element 112 is a glass fiber reinforced plastic rod, the outer diameter of the reinforcing element 112 is 1.0mm-1.2mm, the wall thickness of the outer sheath 3 is 0.5mm-1.0mm, and the overall outer diameter of the reinforced air-blown optical cable is 3.4mm-4.0mm, as shown in fig. 3, 4 and 6.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.
Claims (10)
1. The enhanced air-blowing optical cable is characterized by comprising an inner core (1), a flame-retardant layer (2) and an outer sheath (3) which are sequentially sleeved from inside to outside, wherein the inner core (1) comprises an inner sleeved cable core (11) and an outer sleeved cable core reinforced layer (12), the cable core (11) comprises an optical fiber bundle unit (111) and a reinforced element (112), and the optical fiber bundle unit (111) comprises an optical fiber (113) and an optical fiber sleeve (114) which are sleeved from inside to outside.
2. An enhanced air-blowing optical cable according to claim 1, characterized in that the flame retardant layer (2) is formed by winding a mica tape, and the thickness of the flame retardant layer (2) is 0.5mm-1 mm.
3. An enhanced air-blowing optical cable according to claim 1, wherein the optical fiber bundle unit (111) and the reinforcing element (112) are respectively and fittingly sleeved with an elastic deformation layer (117), and the elastic deformation layer (117) is made of polyurethane or rubber.
4. An enhanced air-blowing optical cable according to claim 1, wherein a plurality of optical fibers (113) are contained in the optical fiber bundle unit (111), the optical fibers (113) are colored optical fibers, and the optical fibers (113) comprise an optical fiber body (115) and a coating layer (116) which are sleeved inside and outside.
5. An enhanced air-blown optical cable according to claim 2, wherein 2 to 12 optical fibers (113) are contained in the optical fiber bundle unit (111), the type of the optical fiber body (115) is g.652 optical fiber or g.657 optical fiber, and the thickness of the coating layer (116) is 180 μm to 256 μm.
6. An enhanced air-blown optical cable according to claim 1, wherein the strength member (112) is a fiber reinforced plastic rod, the modulus of elasticity of the strength member (112) is greater than or equal to 54GPa, the tensile strength of the strength member (112) is greater than or equal to 1100MPa, and the deviation of the outer diameter of the strength member (112) from the outer diameter of the optical fiber bundle unit (111) is less than or equal to 0.05 mm.
7. A reinforced air-blown optical cable according to claim 1, wherein the reinforcing layer (12) is a twisted structure of fibers (122) and water-blocking yarns (121), the fibers (122) and water-blocking yarns (121) are twisted in a manner of S-twist, a twisting pitch of the fibers and water-blocking yarns (121) is 400mm to 800mm, the fibers (122) are aramid fibers or glass fibers, and a thickness of the reinforcing layer (12) is 0.1mm to 0.2 mm;
when the fiber (122) is aramid fiber, the specification of the aramid fiber is 800D-1000D; when the fibers (122) are glass fibers, the glass fibers have a gauge of 600tex to 1200 tex.
8. The reinforced air-blowing optical cable as claimed in claim 1, wherein the reinforcing layer (12) is a twisted structure of fibers (122), the surface of the fibers (122) is provided with water-blocking powder, the twisting mode of the fibers (122) is S twisting, the twisting pitch of the fibers is 400mm-800mm, the fibers (122) are aramid fibers or glass fibers, and the thickness of the reinforcing layer (12) is 0.1mm-0.2 mm;
when the fiber (122) is aramid fiber, the specification of the aramid fiber is 800D-1000D; when the fibers (122) are glass fibers, the glass fibers have a gauge of 600tex to 1200 tex.
9. An enhanced air-blowing optical cable according to claim 1, characterized in that the reinforcement layer (12) is a twisted structure of fibers (122), the twisting manner of the fibers (122) is S-twist, the twisting pitch of the fibers is 400mm-800mm, the fibers (122) are water-blocking aramid fibers, the specification of the water-blocking aramid fibers is 800D-1000D, and the thickness of the reinforcement layer (12) is 0.1mm-0.2 mm.
10. An enhanced air-blowing optical cable as claimed in claim 1, characterized in that the outer sheath (3) is made of flame-retardant polyethylene, and the outer surface of the outer sheath (3) is provided with a plurality of ribs (21).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222201512.7U CN217467292U (en) | 2022-08-22 | 2022-08-22 | Enhanced air-blowing optical cable |
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| CN202222201512.7U CN217467292U (en) | 2022-08-22 | 2022-08-22 | Enhanced air-blowing optical cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115877525A (en) * | 2022-12-20 | 2023-03-31 | 长飞光纤光缆股份有限公司 | Air-blowing optical fiber bundle optical cable preparation device |
| CN117310915A (en) * | 2023-11-28 | 2023-12-29 | 江苏中天科技股份有限公司 | Light low-friction flame-retardant optical cable |
-
2022
- 2022-08-22 CN CN202222201512.7U patent/CN217467292U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115877525A (en) * | 2022-12-20 | 2023-03-31 | 长飞光纤光缆股份有限公司 | Air-blowing optical fiber bundle optical cable preparation device |
| CN117310915A (en) * | 2023-11-28 | 2023-12-29 | 江苏中天科技股份有限公司 | Light low-friction flame-retardant optical cable |
| CN117310915B (en) * | 2023-11-28 | 2024-02-02 | 江苏中天科技股份有限公司 | Light low-friction flame-retardant optical cable |
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