CN208537792U - A kind of fire-retardant cable - Google Patents

Abstract

The utility model discloses a kind of fire-retardant cable, including cable core, the cable core includes at least one Loose tube, optical fiber is equipped in the Loose tube, fire-retardant cable cream is filled between Loose tube, the cable core is wrapped with one layer of double-deck waterstop, is filled with expansible graphite between the bilayer waterstop；The outside of the bilayer waterstop is equipped with the enhancement layer that blocks water, and the enhancement layer that blocks water is more waterproofing type reinforcing fibres, or is wrapped in what the double-deck waterstop outer surface was formed by the composite fibre that common reinforcing fibre and water blocking yarn form；It blocks water and is coated with glass fibre establishment band on the outside of enhancement layer, glass fibre establishment band outside is coated with metal compound belt, and the outside of the metal compound belt is equipped with low smoke and zero halogen oversheath.The fire-retardant cable of the utility model has excellent anti-flammability, optical fiber can be made from high temperature in the case of fire.

Description

A kind of fire-retardant cable

Technical field

The utility model relates to optical cable technology fields, and in particular to a kind of outdoor fire-retardant cable of communication.

Background technique

In recent years, it is implemented along with the in-depth of " broadband China " strategy and informatization strategy is actively pushed forward, network has become For the highly important information delivering path in China.It is well known that optical fiber is most crucial original part in IT application process, in order to make optical fiber It can be widely used in each field, the protection class for improving optical fiber has become the most important development goal of each company, therefore hinders Combustion optical cable application and give birth to, fire-retardant cable can guarantee in the event of a fire, and optical cable can continue to use, reduce property and Personal casualty loss.

Although existing frequently-used flame-proof cable than ordinary optical cable have preferable fire resistance, under flame status or Under 500 DEG C of person or more of the condition of high temperature, optical cable can be licked by high fire and be licked, and with the disaster relief during, fire-fighting water spray, weight It taps, cast impact, the optical cable core of cable interior destroyed, and it is unimpeded not can guarantee transmission performance, causes to interrupt, to fire Communication causes serious loss in calamity.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of fire-retardant cables, compared with existing fire-retardant cable, this The fire-retardant cable of utility model has excellent anti-flammability, optical fiber can be made from high temperature in the case of fire.

In order to solve the above-mentioned technical problem, the utility model provides a kind of fire-retardant cable, including cable core, the cable core packet At least one Loose tube is included, optical fiber is equipped in the Loose tube, is filled with fire-retardant cable cream between Loose tube,

The cable core is wrapped with one layer of double-deck waterstop, is filled with expansible graphite between the bilayer waterstop；Institute The outside for stating the double-deck waterstop is equipped with the enhancement layer that blocks water, and the enhancement layer that blocks water is more waterproofing type reinforcing fibres, or by common The composite fibre of reinforcing fibre and water blocking yarn composition is wrapped in what the double-deck waterstop outer surface was formed；Block water enhancement layer outside packet It is covered with glass fibre establishment band, glass fibre establishment band outside is coated with metal compound belt, sets on the outside of the metal compound belt There is low smoke and zero halogen oversheath.

Preferably, it is filled with fire-retardant fiber paste or water blocking yarn in the Loose tube, can both prevent water in axial direction seepage flow, Fire-retardant effect can be played again.

In the utility model, optional astigmatism fibre or ribbon fiber in Loose tube are preferred to select optical fiber ribbon cable to obtain To fire-retardant optical fiber ribbon cable, which has many advantages, such as that core number is big, it is wide to lay range.The ribbon fiber and band For resin preferably using the acrylic resin with excellent heat resistance, optical fiber coloring agent preferably uses flame retardant type to colour Agent, such as inorganic salts colorant.It is more preferably protected in this way, can then provide ribbon fiber, makes optical fiber from high temperature.

Preferably, the double-deck waterstop with a thickness of 0.8-1.5mm.The double-deck waterstop is preferably using balance longitudinal covering model And circumference cladding may be implemented in plug die, waterstop, longitudinal wrap effect is fine, no loophole, corrugationless.

Preferably, the waterproofing type reinforcing fibre is aramid yarn, superhigh intensity PE silvalin, basalt fibre yarn or thermosetting Property glass fiber yarn.

In the utility model, metal compound belt lap width is preferred >=5mm.0.1mm- can be used in metal compound belt 0.15mm base band coats the polyethylene or EVA resin film of one layer of 0.05-0.1mm on base band two sides.In view of metal compound belt Tension in forming process, it is preferred that select 6 type matrixes and double sizing mould moulding process, double plug dies can be greatly reduced into Type tension, 6 type matrixes also can be good at reducing forming tension, increase metal compound belt covered effect and overlap joint effect, accomplished It is complete to be laterally fully sealed, enhance fire resistance property.

In the utility model, the low smoke and zero halogen oversheath extrusion molding can be according to production in the outside of metal compound belt, thickness Moral character can be carried out adjustment, it is preferred that its thickness can be 1.0-2.4mm.

In the utility model, this layer-twisted type cable core can select any structure, and 1+4,1+6 etc. is preferably used to stablize knot Structure, it is preferred that the Loose tube is 4, is equipped with reinforcer between 4 Loose tubes；Gap between Loose tube is additionally provided with 4 fillings Rope.

Preferably, the reinforcer is FRP reinforcer.

The utility model has the beneficial effects that:

1, the fire-retardant cable of the utility model is filled between the double-deck waterstop of cable core outer cladding, the double-deck waterstop Expansible graphite with flame retardant property plays very well cable core so that the bilayer waterstop has excellent flame retardant property Fire-resisting protection effect；Secondly, being orderly arranged outside each block water enhancement layer and glass with flame retarding function in the double-deck waterstop Fiber works out band, further improves the flame retardant effect of optical cable, and can be improved the tensile property of optical cable；Again, using resistance It fires cable cream and replaces traditional cable cream for not having flame retardant property, not only maintained the block-water performance of former cable cream, but also to impart cable cream fire-retardant Performance improves the flame retardant property of optical cable again.

2, the fire-retardant cable of the utility model, selection is all environment-friendlyflame-retardant flame-retardant material, will not have been generated in combustion Malicious, flammable or mordant gas, reduces the pollution to environment, can be widely used in the weight such as subway, rail traffic Want place.

3, the fire-retardant cable of the utility model is tested by fire-retardant durability performance, has been obtained well as a result, fiber optic cable flame retardant International standard can be met.

Detailed description of the invention

Fig. 1 is the schematic cross-section of the fire-retardant optical fiber ribbon cable of the utility model embodiment 1；

Fig. 2 is the schematic cross-section of the fire-retardant optical fiber ribbon cable of the utility model embodiment 2；

Wherein: 100, Loose tube；210, gasket for packing；220, fire-retardant cable cream；230, reinforcer；300, ribbon fiber；410, Fire-retardant fiber paste；420, water blocking yarn；500, the double-deck waterstop；600, block water enhancement layer；700, glass fibre works out band；800, metal Composite band；900, low smoke and zero halogen oversheath.

Specific embodiment

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.

All publications, patent application, patent and the other bibliography that this specification is mentioned all draw in this for reference. Unless otherwise defined, all technical and scientific terms used herein all has what those skilled in the art routinely understood to contain Justice.In case of conflict, it is subject to the definition of this specification.

When this specification with prefix " well known to those skilled in the art ", " prior art " or its export material similar to term Whens material, substance, method, step, device or component etc., object derived from the prefix is covered this field when the application proposes and is routinely made Those of with, but also include also being of little use at present, it will but become art-recognized for suitable for those of similar purpose.

In the context of the present specification, other than the content clearly stated, any matters or item that do not mention are equal It is directly applicable in those of known in the art without carrying out any change.Moreover, any embodiment described herein can be with It is freely combined with one or more other embodiments described herein, the technical solution or technical idea formed therefrom regards For the original disclosure of the utility model or a part of original description, and it is not considered as not disclosing or being expected herein new Content, unless those skilled in the art think that the combination is obvious unreasonable.

Embodiment 1

It referring to Figure 1, include 4 pine sets present embodiment discloses a kind of fire-retardant optical fiber ribbon cable, including cable core, in cable core Pipe 100 is equipped with FRP reinforcer 230 between Loose tube 100, and gasket for packing 210 is equipped in the gap of adjacent Loose tube 100. There is ribbon fiber 300 in every Loose tube 100, include multifiber in ribbon fiber 300, the multifiber is by simultaneously Resin integral coating is lived, and fire-retardant fiber paste 410 is filled in Loose tube 100, is filled in the gap between Loose tube 100 fire-retardant Cable cream 220.

Cable core outer cladding a layer thickness is the double-deck waterstop 500 of 0.8mm, and being filled between the double-deck waterstop 500 can be swollen Swollen graphite；The outside of the double-deck waterstop is equipped with the enhancement layer 600 that blocks water, which is more basalt fibre yarn packets It is wrapped in what double-deck 500 outer surface of waterstop was formed；Block water enhancement layer 600 outside be further coated with glass fibre establishment band 700, glass fibre is worked out and is coated with one layer of metal compound belt 800, outside extrusion molding a layer thickness of metal compound belt on the outside of band 700 For the low smoke and zero halogen oversheath 900 of 1.5mm.

According to method specified in flame retardant property test international standard IEC60332-1 and IEC60332-2-24, test is originally The flame retardant property of the optical cable sample of embodiment, the results show that the flame retardant property of the optical cable sample of the present embodiment is significantly larger than the world Standard has excellent flame retardant property.

Embodiment 2

Fig. 2 is referred to, includes 4 pine sets present embodiment discloses a kind of fire-retardant optical fiber ribbon cable, including cable core, in cable core Pipe 100 is equipped with FRP reinforcer 230 between Loose tube 100, and gasket for packing 210 is equipped in the gap of adjacent Loose tube 100. There is ribbon fiber 300 in every Loose tube 100, include multifiber in ribbon fiber 300, the multifiber is by simultaneously Resin integral coating is lived, and water blocking yarn 420 is filled in Loose tube 100, is filled with fire-retardant cable in the gap between Loose tube 100 Cream 220.

Cable core outer cladding a layer thickness is the double-deck waterstop 500 of 1.2mm, and being filled between the double-deck waterstop 500 can be swollen Swollen graphite；The outside of the double-deck waterstop is equipped with the enhancement layer 600 that blocks water, which is more thermoset glass fibres Yarn is wrapped in what double-deck 500 outer surface of waterstop was formed；Block water enhancement layer 600 outside be further coated with glass fibre volume Band 700 processed, glass fibre are worked out and are coated with one layer of metal compound belt 800, one layer of the outside extrusion molding of metal compound belt on the outside of band 700 With a thickness of the low smoke and zero halogen oversheath 900 of 2.0mm.

According to method specified in flame retardant property test international standard IEC60332-1 and IEC60332-2-24, test is originally The flame retardant property of the optical cable sample of embodiment, the results show that the flame retardant property of the optical cable sample of the present embodiment is significantly larger than the world Standard has excellent flame retardant property.

The fire-retardant optical fiber ribbon cable of above-described embodiment has the advantages that fibre ribbon block-water performance is more preferable, optical cable cost Lower, more low-carbon environment-friendly, weight are lighter, examine and construction is more convenient, production environment more cleans.The design of this optical cable was both met Cable machinery performance and environmental performance, and improve flame retardant property.

Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.

Claims (9)

1. a kind of fire-retardant cable, including cable core, the cable core includes at least one Loose tube, is equipped with optical fiber in the Loose tube, Fire-retardant cable cream is filled between Loose tube, which is characterized in that

The cable core is wrapped with one layer of double-deck waterstop, is filled with expansible graphite between the bilayer waterstop；It is described double The outside of layer waterstop is equipped with the enhancement layer that blocks water, and the enhancement layer that blocks water is more waterproofing type reinforcing fibres, or by commonly reinforcing The composite fibre of fiber and water blocking yarn composition is wrapped in what the double-deck waterstop outer surface was formed；It blocks water and is coated on the outside of enhancement layer Glass fibre works out band, and glass fibre establishment band outside is coated with metal compound belt, and the outside of the metal compound belt is equipped with low Cigarette Halogen oversheath.

2. fire-retardant cable as described in claim 1, which is characterized in that be filled with fire-retardant fiber paste in the Loose tube or block water Yarn.

3. fire-retardant cable as described in claim 1, which is characterized in that the optical fiber in the Loose tube is ribbon fiber.

4. fire-retardant cable as described in claim 1, which is characterized in that it is described bilayer waterstop with a thickness of 0.8-1.5mm.

5. fire-retardant cable as described in claim 1, which is characterized in that the waterproofing type reinforcing fibre is aramid yarn, superelevation is strong Spend PE silvalin, basalt fibre yarn or thermoset glass fibre yarn.

6. fire-retardant cable as described in claim 1, which is characterized in that lap width >=5mm of the metal compound belt；It is described Metal compound belt is polyethylene or the EVA tree for being 0.05-0.1mm in the two sides coating thickness with a thickness of 0.1mm-0.15mm base band What membrane of lipoprotein was prepared.

7. fire-retardant cable as described in claim 1, which is characterized in that the low smoke and zero halogen oversheath with a thickness of 1.0- 2.4mm。

8. fire-retardant cable as described in claim 1, which is characterized in that the Loose tube is 4, is equipped between 4 Loose tubes Reinforcer；Gap between Loose tube is additionally provided with 4 gasket for packings.

9. fire-retardant cable as claimed in claim 8, which is characterized in that the reinforcer is FRP reinforcer.