CN218601529U - Small-span self-supporting overhead anti-bite flame-retardant optical cable - Google Patents

Abstract

The utility model discloses a little span self-supporting built on stilts fire-retardant optical cable of preventing nibbling comprises optic fibre, dry-type yarn, the fire-retardant pine sleeve pipe in center, the area that blocks water, interior band, armor, outer band and fire-retardant lag, optic fibre, dry-type yarn that blocks water arrange the fire-retardant pine sleeve pipe in center in, the cladding of the area that blocks water is outside the fire-retardant pine sleeve pipe in center, the cladding of band is outside the band that blocks water, the armor cladding is outside the band of endocyst, the cladding of outer band is outside the armor, the cladding of fire-retardant lag is outside the outer band, the armor is formed by the transposition of a plurality of fan-shaped FRP strips. The utility model discloses a light-duty structural design, when satisfying the overhead when using of open-air optical cable requirements such as tensile, infiltration, intensity, it is better to prevent that the organism from nibbling and stinging and fire-retardant effect.

Description

Small-span self-supporting overhead anti-bite flame-retardant optical cable

The technical field is as follows:

the utility model belongs to the technical field of the communication optical cable, in particular to little span self-supporting type is built on stilts prevents nibbling and stings fire-retardant optical cable.

Background art:

in an electric power system, a self-supporting overhead optical cable laid in a mountain area is usually an all-dielectric self-supporting ADSS optical cable, and aramid fibers are used as main bearing elements in the optical cable. Due to the unique environmental conditions of mountain areas, animals often appear and disappear, so that a good rest place is provided for organisms such as birds and rats, and the optical cable becomes an object for biting of the animals. And aramid fiber's resistant ability of stinging is relatively weak, and the outer jacket of optical cable can be opened easily to the sharp tooth of animal, and after the outer jacket of optical cable was bitten through, can bite the cable core easily, this normal operating that not only can influence the optical cable line still can lead to the interrupt of communication when serious, also can reduce the life of optical cable simultaneously.

On the other hand, mountain areas are luxuriant in vegetation, and are exposed to wind and sun all the year round, and in addition, accidental spontaneous combustion or artificial fire catching exists in forest areas, a small-range fire catching or a local big fire catching may exist in forest areas, the flame-retardant and fire-resistant performance of conventional ADSS optical cables is poor, the optical cables can be burnt by big fire when passing through forest areas, and therefore transmission signals are interrupted. In addition, the flame retardant protection level of the existing optical cable is relatively low, and the flame retardant performance is not good, so that an all-dielectric aerial optical cable is urgently needed to meet the requirements of flame retardance, biological bite resistance, lightning stroke resistance and other performances, and meanwhile, the all-dielectric aerial optical cable has the characteristics of light weight and easiness in construction and maintenance.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.

The utility model has the following contents:

an object of the utility model is to provide a small-span self-supporting built on stilts fire-retardant optical cable of preventing nibbling to overcome the defect among the above-mentioned prior art.

In order to realize the above-mentioned purpose, the utility model provides a little span self-supporting built on stilts fire-retardant optical cable of preventing nibbling, by optic fibre, dry-type yarn, the fire-retardant loose tube in center that blocks water, water-blocking area, interior band, armor, outer band and fire-retardant lag constitute, optic fibre, dry-type yarn that blocks water are arranged in the fire-retardant loose tube in center in, the water-blocking area cladding is outside the fire-retardant loose tube in center, the cladding of interior band is outside the water-blocking area, the armor cladding is outside the interior band, the cladding of outer band is outside the armor, the cladding of fire-retardant lag is outside the outsourcing, the armor is formed by the transposition of a plurality of fan-shaped FRP strip.

Further, preferably, the central flame-retardant loose tube is made of a flame-retardant PBT material.

Further, preferably, the inner wrapping tape is made of a flame-retardant glass fiber material and has a thickness of 0.3-0.5mm.

Further, preferably, the thickness of the armor layer is 0.3 to 0.5mm.

Further, preferably, the outer wrapping tape is made of ceramic fire-resistant tape, the thickness of the outer wrapping tape is 0.12-0.25mm, and the overlapping width of the outer wrapping tape is 3-5mm.

Furthermore, as a preferable mode, the repellent agent is added into the flame-retardant protective sleeve, and the thickness is 1.5-2.2mm.

Furthermore, preferably, n-nonanoic vanillylamide is adopted as the avoiding agent, and the addition amount of the avoiding agent in the flame-retardant protective sleeve is 0.1-0.3%.

Further, preferably, 30-50% of an intumescent flame retardant is added into the armor layer, wherein the intumescent flame retardant consists of phosphoric acid, ammonium polyphosphate, magnesium hydroxide, an organic polymer polymeric material and a dispersing agent, and the ratio of each component is (5).

Compared with the prior art, the utility model discloses an aspect has following beneficial effect:

(1) The armor layer of the utility model is formed by twisting a plurality of fan-shaped FRP strips, the fan-shaped structures are twisted to form a tubular structure, and the fan-shaped structures are tightly connected, so that the rodent lacks an acting point when gnawing, the rodent can be effectively prevented from gnawing, the fault rate of optical cable communication is reduced, and the service life of the optical cable is prolonged;

(2) Compared with the traditional aerial optical cable, the utility model adopts a full-dry structure, has no factice filling, has the advantage of light weight, and is easier to construct and maintain;

(3) Compared with the traditional self-supporting optical cable, the utility model does not need to adopt extra aramid fiber as a bearing element, the armor layer is directly used as a tensile element, the structure is more concise, the whole weight is lighter, and the construction and maintenance are easy;

(4) The optical cable structure of the utility model does not contain metal, on one hand, the weight of the optical cable can be reduced, and on the other hand, the requirement of lightning protection can be met in the field application of the multi-thunder rainy weather;

(5) N-nonanoic acid vanillic amide is added into the outermost flame-retardant protective sleeve to serve as an aversion agent, the protective sleeve has strong spicy taste, when rodents are bitten, oral mucosa and gustatory nerves are strongly stimulated to abandon chewing, termites can be killed, and the outermost flame-retardant protective sleeve is prevented from being corroded by the rodents and the termites;

(6) A certain amount of intumescent flame retardant is added into the armor layer, so that the armor layer has a flame retardant effect at the same time;

(7) The protective sleeve added with the repellent agent on the outermost layer is combined with the armor layer twisted in a sector mode, so that the performance of the whole optical cable for preventing animals from biting is better, and meanwhile, the armor layer added with the intumescent flame retardant is combined with the flame-retardant protective sleeve on the outermost layer, so that the flame-retardant performance of the whole optical cable is better.

Description of the drawings:

FIG. 1 is a schematic view of an embodiment 1 of a small-span self-supporting aerial bite-preventing flame-retardant optical cable according to the present invention;

FIG. 2 is a schematic view of an embodiment 2 of a small-span self-supporting aerial bite-preventing flame-retardant optical cable according to the present invention;

description of the drawings: 1-optical fiber, 2-dry water-blocking yarn, 3-central flame-retardant loose tube, 4-water-blocking tape, 5-inner wrapping tape, 6-armor layer, 601-fan-shaped FRP strip, 7-outer wrapping tape and 8-flame-retardant protective sleeve.

The specific implementation mode is as follows:

the following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments.

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

Example 1:

as shown in fig. 1, the small-span self-supporting aerial bite-preventing flame-retardant optical cable is composed of an optical fiber 1, a dry-type water-blocking yarn 2, a central flame-retardant loose tube 3, a water-blocking tape 4, an inner wrapping tape 5, an armor layer 6, an outer wrapping tape 7 and a flame-retardant protective sleeve 8, wherein the optical fiber 1 and the dry-type water-blocking yarn 2 are arranged in the central flame-retardant loose tube 3, the water-blocking tape 4 is wrapped outside the central flame-retardant loose tube 3, the inner wrapping tape 5 is wrapped outside the water-blocking tape 4, the armor layer 6 is wrapped outside the inner wrapping tape 5, the outer wrapping tape 7 is wrapped outside the armor layer 6, the flame-retardant protective sleeve 8 is wrapped outside the outer wrapping tape 7, and the armor layer 6 is formed by twisting a plurality of fan-shaped strips 601. The armor 6 that forms after fan-shaped FPR strip 601 transposition is whole to be the tubular structure, closely links to each other between the fan-shaped structure, and the surface of pipe is more for leveling after outer bandlet 7 and the 8 cladding of fire-retardant lag, just lacks the impetus when rodent gnaws like this, can prevent effectively that rodent from gnawing and sting, reduces the fault rate of optical cable communication, prolongs the life of optical cable.

Further, preferably, the central flame-retardant loose tube 3 is made of a flame-retardant PBT material.

Further, preferably, the inner wrapping tape 5 is made of a flame-retardant glass fiber material and has a thickness of 0.3-0.5mm.

Further, the armor layer 6 is formed by twisting a plurality of fan-shaped FRP strips 601, and the thickness is 0.3-0.5mm. The FRP strip is flame-retardant glass fiber reinforced plastic, 30-50% of intumescent flame retardant is added into the material, the intumescent flame retardant consists of phosphoric acid, ammonium polyphosphate, magnesium hydroxide, organic polymer polymeric material and dispersant, and the proportion of each component is 5. The armor layer 6 is directly used as a tensile element, aramid fiber is not required to be additionally designed as the tensile element, the structure is simpler, the integral weight is lighter, and the construction and maintenance are easy; meanwhile, the armor layer 6 and the flame-retardant protective sleeve 8 are dual-purpose in flame retardance, and the overall flame-retardant performance of the optical cable can be improved.

Further, the outer wrapping tape 7 is preferably made of a ceramic fire-resistant tape, the thickness of the ceramic fire-resistant tape is 0.12-0.25mm, and the overlapping width of the ceramic fire-resistant tape is 3-5mm. If the lapping width is too small, a heat channel is easy to form and a cable core is damaged; if the lapping width is too large, the problem of the surface of the optical cable being not round is easily caused. Preferably, the ceramic fire-resistant belt can be wrapped and bundled by adopting high-strength water-blocking type polyurethane binding yarns.

Furthermore, as a preferable mode, the flame-retardant protective sleeve 8 is internally added with a repellent agent, the thickness of the repellent agent is 1.5-2.2mm, the repellent agent adopts n-nonanoic vanilloylamine, and the addition amount of the repellent agent in the flame-retardant protective sleeve 8 is 0.1-0.3%. The repellent agent can make the oral mucosa and gustatory nerve of the rodent be strongly stimulated to abandon chewing, and can kill termites, thereby avoiding the outer sheath of the optical cable from suffering serious harm caused by the erosion of the rodents and the termites in the long-term use process in the region where the termites or the rodents move, and the repellent agent can be well dissolved with resin and plasticizer, and has excellent processing stability.

Example 2:

as shown in fig. 2, the small-span self-supporting aerial bite-preventing flame-retardant optical cable is composed of an optical fiber 1, a dry water-blocking yarn 2, a central flame-retardant loose tube 3, a water-blocking tape 4, an inner wrapping tape 5, an armor layer 6, an outer wrapping tape 7 and a flame-retardant protective sleeve 8, wherein the optical fiber 1 and the dry water-blocking yarn 2 are arranged in the central flame-retardant loose tube 3, the dry water-blocking yarn 2 surrounds the optical fiber 1, the water-blocking tape 4 surrounds the central flame-retardant loose tube 3, the inner wrapping tape 5 surrounds the water-blocking tape 4, the armor layer 6 surrounds the inner wrapping tape 5, the outer wrapping tape 7 surrounds the armor layer 6, the flame-retardant protective sleeve 8 surrounds the outer wrapping tape 7, and the armor layer 6 is formed by twisting a plurality of fan-shaped FRP strips 601. The dry type water blocking yarn 2 forms a circle of water blocking protection structure on the optical fiber 1, so that the optical fiber 1 is not loose, and the water blocking effect is better.

The utility model discloses a light-duty structural design, when satisfying the overhead when using of open-air optical cable requirements such as tensile, infiltration, intensity, it is better to prevent that the organism from nibbling and stinging and fire-retardant effect.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (5)

1. The utility model provides a fire-retardant optical cable of bite is prevented to small-span self-supporting built on stilts which characterized in that: constitute by optic fibre (1), dry-type yarn (2) that blocks water, fire-retardant pine sleeve pipe in center (3), water-blocking tape (4), interior bandage (5), armor (6), outsourcing bandage (7) and fire-retardant lag (8), optic fibre (1), dry-type yarn (2) that blocks water arrange in fire-retardant pine sleeve pipe in center (3), water-blocking tape (4) cladding is outside fire-retardant pine sleeve pipe in center (3), interior bandage (5) cladding is outside water-blocking tape (4), outside bandage (5) including armor (6) cladding, outsourcing bandage (7) cladding is outside armor (6), fire-retardant lag (8) cladding is outside band (7), armor (6) are formed by the transposition of a plurality of fan-shaped FRP strip (601).

2. The small-span self-supporting aerial bite-preventing flame-retardant optical cable according to claim 1, wherein: the thickness of the inner wrapping tape (5) is 0.3-0.5mm.

3. The small-span self-supporting aerial bite-preventing flame-retardant optical cable according to claim 1, wherein: the thickness of the armor layer (6) is 0.3-0.5mm.

4. The small-span self-supporting aerial bite-preventing flame-retardant optical cable according to claim 1, wherein: the outer wrapping belt (7) is made of a ceramic fireproof belt, the thickness is 0.12-0.25mm, and the lap joint width is 3-5mm.

5. The small-span self-supporting aerial bite-preventing flame-retardant optical cable according to claim 1, wherein: the thickness of the flame-retardant protective sleeve (8) is 1.5-2.2mm.

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