CN218728240U - Large-core-number anti-rodent compression-resistant optical cable - Google Patents

Abstract

The utility model belongs to the optical cable field, concretely relates to rodent resistance to compression type optical cable is prevented to big core number. The subunit adopts an oil-filled micro-beam tube structure, so that the extra length, water seepage and the shrinkage performance of the optical fiber are ensured, the appearance of the inner protection embedded FRP is ensured in a vacuum sizing mode, the oil-filled micro-beam tube and the water-blocking reinforcement are inserted into the inner protection embedded FRP, and the excellent water-blocking and stretching performances of the inner protection embedded FRP are ensured by adopting a twisting process. In order to enable the optical cable to meet the use requirements of various environments, the use environment of the outer sheath of the optical cable adopts a PE material, and glass yarn and steel belt are added for protection, so that the optical cable has good compression resistance, rat resistance, corrosion resistance and temperature resistance. This rat-proof microbeam tube optical cable of big core number resistance to compression type has extremely strong environment and mechanical properties through technology and structural optimization, compares with traditional multicore optical cable and possesses the advantage of small-size and big core number, lays, and construction cost and construction cycle are almost the same with traditional microbeam tube optical cable, have increased the efficiency of resistance to compression and rodent prevention simultaneously.

Description

Large-core-number anti-rodent compression-resistant optical cable

Technical Field

The utility model belongs to the optical cable field, concretely relates to rodent resistance to compression type optical cable is prevented to big core number.

Background

Fiber optic 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 as telecommunication cable assemblies. The optical cable is mainly composed of optical fiber, plastic protective sleeve and plastic sheath, and has no metal such as gold, silver, copper and aluminum, and generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. Namely: a cable is formed by subjecting an optical fiber to a certain process. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and further comprises a waterproof layer, a buffer layer, an insulated metal wire and other components according to requirements.

At present, with the conditions of intensive optical cable laying and insufficient internal space in urban pipelines, the trend of the optical cable industry is inevitably developed towards large core number and miniaturization. The existing micro-beam tube optical cable has the advantages that the number of cores is small, the size is large, the structure laid on the pipeline can be bitten by rodents, the steel belt is used as protection to effectively prevent the rodent damage, therefore, when the steel belt is used for protection, adjustment is made on a sheath material, the glass slag in a certain proportion is added to avoid the rodent damage, the performance of the optical cable is effectively protected, and the service life is prolonged.

The invention patent with publication number CN103499860A discloses a water-blocking rat-proof radio-frequency remote optical cable and a manufacturing method thereof, the optical cable comprises an outer protective layer, a water-blocking glass fiber yarn is wrapped in the outer protective layer, a plurality of nylon tight wrapping layers are wrapped in the water-blocking glass fiber yarn, and an optical fiber is arranged in each nylon tight wrapping layer. The manufacturing method comprises the following steps: (1) The outer surfaces of the plurality of optical fibers are all wrapped with nylon tight wrapping layers; (2) winding an outer protective layer on the periphery of the nylon tight wrapping layer; (3) And water-blocking glass fibers are filled between the outer protective layer and the nylon tightly-wrapping layer. The invention adopts the water-blocking glass fiber yarn, and increases the performance of the optical cable such as rat bite prevention; the nylon tight sleeve is adopted, so that the attenuation has better stability, and simultaneously, the mouse bite resistance can be better.

SUMMERY OF THE UTILITY MODEL

The defects of insufficient water resistance, poor working performance in an extreme environment, incapability of effectively protecting the performance of an optical cable and the like still exist in the prior art.

In order to solve the above-mentioned prior art problems, the utility model provides a big core number anti-rodent resistance to compression type optical cable, including optical cable inner core, the band that blocks water of cladding in the optical cable inner core outside, the cladding in the inner sheath outside the band that blocks water, the cladding in the fine yarn layer of glass of the inner sheath outside, the cladding in the fine yarn layer of glass steel band outside and the cladding in the outer jacket outside the band layer;

the optical cable inner core comprises a plurality of cable cores; the cable core consists of a plurality of optical fibers and a micro-beam tube layer; the optical fibers are arranged inside the cable core, and the micro-beam tube layer is arranged on the outer side of the cable core.

In the structural design process, the following four points are considered in an important way:

(1) The micro-bundle tube adopts an oiling filling process, and the sheath material is made of an ointment-resistant anti-adhesion material, so that the micro-bundle tube has excellent properties of oil seepage, flexibility in bending, difficulty in fiber breakage and the like;

(2) Because the structure is required to be loose, the pull tube type process is adopted, the appearance of the optical cable is ensured by the embedded FRP structure in a vacuum sizing mode, and the produced micro-beam tubes and the aramid fiber reinforcement are inserted and dispersed to enter, so that the micro-beam tubes and the aramid fiber reinforcement are dispersed uniformly in the interior, and the water blocking performance is greatly enhanced. The outer sheath reinforcing piece adopts water-blocking glass fiber yarns, so that the flexibility and bending performance of the outer sheath reinforcing piece are good, and the bending performance of the optical cable is not influenced. The mechanical property of the aramid fiber yarn is not inferior to that of the aramid fiber yarn under the condition of low cost; meanwhile, the glass fiber yarn is non-toxic and harmless, is non-combustible, corrosion-resistant, high-temperature-resistant, small in elongation, stable in chemical property and has certain tensile strength, and the tensile property of the optical cable can be improved. Compared with physical rat-proof methods such as armor, rat-proof nets and the like, the glass fiber yarn rat-proof optical cable is easy to manufacture, only needs to be placed vertically, has no difference with a common optical cable in the construction process, and cannot increase the construction cost;

(3) Because the optical cable is used for laying pipelines and grooves in a using scene, the environment is severe, and steel belt protection is increased;

(4) The HDPE material is adopted according to the use environment of the optical cable, so that the performance requirements of cracking resistance, abrasion resistance, insulation and the like are met.

Preferably, the interior of the inner sheath layer is provided with an FRP composite material.

Preferably, the outer sheath is made of polyethylene.

Furthermore, the outer sheath is made of high density polyethylene.

Preferably, the optical cable core further comprises aramid fiber yarn.

Preferably, the optical cable core further comprises a water blocking yarn.

Preferably, the micro-beam tube layer is subjected to oiling and filling treatment, and the wall thickness of the micro-beam tube layer is 0.1-0.15mm.

Preferably, the inner protection layer is made of an oil paste resistant anti-adhesion low-smoke halogen-free material.

Preferably, the glass fiber yarn layer is prepared from water-blocking glass fiber yarns.

Preferably, the thickness ratio of the inner protective layer to the outer protective layer is 1-2:1.

preferably, the thickness ratio of the glass fiber yarn layer to the steel tape layer is 1-2:1.

the utility model relates to a rodent resistance to compression type optical cable is prevented to big core number is applicable to the pipeline, introduces, LAN lays etc. to wiring and road surface groove between data center. By adopting novel structural design and process control, the FRP is embedded in the inner sheath, the tensile force of the optical cable is enhanced, and the tensile property is met. The optical cable is laid in each pipeline and a road surface groove for a long time, the steel belt compression resistance protection is increased, the PE sheath is adopted, so that the optical cable has the advantages of cracking resistance, abrasion resistance and good insulating property, a certain proportion of glass slag is added in the material, and on the basis of not influencing the mechanical property and the environmental property of the optical cable, the performances of rat bite resistance, tensile strength, water resistance and the like of the optical cable are increased.

Compared with the prior art, the technical scheme of the utility model have following advantage:

(1) The utility model discloses simple structure, optical fiber density are big, and the optical cable diameter is little, and construction convenience is quick, great reduction construction cycle and construction cost, good environmental mechanical properties has.

(2) The inner sheath and the outer sheath of the optical cable are filled with water-blocking reinforcements, so that the optical cable has excellent water-blocking performance.

(3) The protection of the steel belt longitudinal wrapping is added, the steel belt longitudinal wrapping is adhered to the outer sheath, raw materials are specially customized, a certain proportion of glass fiber yarns are added, the optical cable can still normally work under the condition that the temperature is too high or too low, the optical cable is suitable for more severe environments, and the protection of the steel belt and the high-density polyethylene added with the glass fiber yarns have the function of preventing the rat bite.

(4) The utility model is suitable for a to laying of LAN part in the computer lab, big middle and small size data center, floor and building short distance between built on stilts, lay, interconnection intercommunication and interconnection intercommunication between the computer lab between the rack in laying in house pipe way and the groove.

(5) The temperature resistance of the optical cable is required to be between 40 ℃ below zero and 70 ℃, the short-term tension is allowed to reach 2500N, and the requirement of the IEC60794-1-2-F5B water seepage test is met.

Drawings

Fig. 1 is a schematic structural view of a large-core rodent-resistant pressure-resistant optical cable.

FIG. 2 is a schematic structural diagram of a cable core in a large-core-number rodent-resistant compression-resistant optical cable.

FIG. 3 is a process flow diagram of a high core count rodent resistant pressure resistant optical cable.

Description of reference numerals: the optical fiber cable comprises 1-optical fiber, 2-micro-beam tube layer, 3-water-blocking tape, 4-aramid fiber yarn, 5-water-blocking yarn, 6-FRP composite material, 7-inner protective layer, 8-glass fiber yarn layer, 9-steel tape layer and 10-outer protective layer.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Examples

The utility model provides a rodent resistance to compression type optical cable is prevented to big core number, includes the optical cable inner core, and the cladding is in the band 3 that blocks water in the optical cable inner core outside, and the cladding is in the interior sheath 7 in the band 3 outside that blocks water, and the inside of interior sheath 7 is equipped with FRP combined material 6, and the material of interior sheath is the low smoke and zero halogen material of resistant cream anti-adhesion, and this optical cable inner core still includes aramid fiber yarn 4 and the yarn 5 that blocks water.

The large-core-number rodent-resistant pressure-resistant optical cable further comprises a glass fiber yarn layer 8 coated on the outer side of the inner protection layer 7, wherein the glass fiber yarn layer 8 is prepared from water-blocking glass fiber yarns, a steel belt layer 9 coated on the outer side of the glass fiber yarn layer 8 and an outer protection layer 10 coated on the outer side of the steel belt layer 9; the outer sheath 10 is made of high density polyethylene.

The optical cable inner core comprises a plurality of cable cores; the cable core consists of a plurality of optical fibers 1 and a micro-beam tube layer 2; the optical fiber 1 is arranged in the cable core, and the micro-beam tube layer 2 is arranged on the outer side of the cable core; the micro-beam tube layer 2 is subjected to oiling and filling treatment, and the thickness ratio of the inner protective layer 7 to the outer protective layer 10 of the micro-beam tube layer 2 is 2, wherein the wall thickness of the inner protective layer is 0.1-0.15 mm: 1.

the thickness ratio of the glass fiber yarn layer 8 to the steel belt layer 9 is 1:1.

evaluation of Effect

The large-core-number rodent-resistant pressure-resistant optical cable is prepared by coating oil paste outside the single-mode optical fiber to form an oil-filled micro-beam tube, and the oil-filled micro-beam tube has the characteristics of good water seepage, high temperature resistance, oil resistance, bending flexibility and the like. Meanwhile, according to the requirement of rat protection, the steel belt is adopted as protection, the proportion of the glass fiber yarns is increased as the raw material of the outer sheath, so that in the rat biting process, the glass slag and the steel belt can hurt the oral cavity of the rat, the rat is enabled to feel afraid of the optical cable, and the rat biting is effectively prevented.

The inner and outer filling water-blocking reinforcers of the large-core-number rodent-resistant compression-resistant optical cable take HDPE as a sheath material, have excellent environmental performance, and are suitable for various different environments.

The large-core-number rodent-resistant pressure-resistant optical cable is used for pipelines, traction, short-distance overhead, home-entry introduction, wiring from a local area network to a data center and the like. The diameter of the optical cable is reduced by 40%, and the density of the optical fiber is increased by 50%. The construction time is shortened by 50 percent.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (10)

1. The large-core-number anti-rodent compression-resistant optical cable is characterized by comprising an optical cable inner core, a water-blocking wrapping tape (3) wrapping the outer side of the optical cable inner core, an inner protection layer (7) wrapping the outer side of the water-blocking wrapping tape (3), a glass fiber yarn layer (8) wrapping the outer side of the inner protection layer (7), a steel tape layer (9) wrapping the outer side of the glass fiber yarn layer (8) and an outer protection layer (10) wrapping the outer side of the steel tape layer (9);

the optical cable inner core comprises a plurality of cable cores; the cable core consists of a plurality of optical fibers (1) and a micro-beam tube layer (2); the optical fibers (1) are arranged inside the cable core, and the micro-beam tube layer (2) is arranged on the outer side of the cable core.

2. The large core rodent resistant and pressure resistant optical cable as claimed in claim 1, wherein said inner sheath (7) is internally provided with FRP composite (6).

3. The large core rodent resistant and pressure resistant optical cable as claimed in claim 1, wherein said outer sheath (10) is polyethylene.

4. The large core rodent resistant and pressure resistant optical cable as claimed in claim 3, wherein said outer sheath (10) is of high density polyethylene.

5. The large core rodent resistant optical cable of claim 1 wherein the cable core further comprises aramid fiber yarn (4).

6. The large core rodent resistant and pressure resistant optical cable of claim 1 wherein the cable core further comprises water blocking yarn (5).

7. The large-core rodent-resistant and pressure-resistant optical cable as claimed in claim 1, wherein the micro-tube layer (2) is subjected to oiling and filling treatment, and the wall thickness of the micro-tube layer (2) is 0.1-0.15mm.

8. The large core rodent resistant and pressure resistant optical cable of claim 1 wherein said glass fiber yarn layer (8) is prepared from water blocking glass fiber yarn.

9. The large core rodent resistant and pressure resistant optical cable as claimed in claim 1, wherein the ratio of the thickness of said inner sheath (7) and outer sheath (10) is 1-2:1.

10. the large core rodent resistant pressure resistant optical cable according to claim 1, wherein the ratio of the thickness of the glass fiber yarn layer (8) to the thickness of the steel tape layer (9) is 1-2:1.

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