CN210803803U - Compact flame-retardant fire-resistant multi-core optical cable - Google Patents
Compact flame-retardant fire-resistant multi-core optical cable Download PDFInfo
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- CN210803803U CN210803803U CN201921256967.0U CN201921256967U CN210803803U CN 210803803 U CN210803803 U CN 210803803U CN 201921256967 U CN201921256967 U CN 201921256967U CN 210803803 U CN210803803 U CN 210803803U
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Abstract
The utility model discloses a compact flame-retardant fire-resistant multi-core optical cable, which comprises a plurality of optical unit wire harnesses, wherein the optical unit wire harnesses are circumferentially arranged in a circular shape to form an optical unit total beam, the optical unit total beam is formed by twisting the optical unit wire harnesses, and the center of the optical unit total beam is provided with an inner core which plays a tensile role on the whole optical cable; each light unit wiring harness comprises an optical fiber communication unit and a first flame retardant body, and the first flame retardant body is wrapped outside the optical fiber communication unit; a second flame retardant body is wrapped outside the light unit total beam; the first flame-retardant body and the second flame-retardant body are both made of elastic materials. The utility model discloses each optical unit pencil transposition draws in more and the compactness, does benefit to the external diameter of whole multicore optical cable and reduces, and the fire-retardant body of first fire-retardant body and second adopts elastic material to make simultaneously, also can be to the internal contraction under the effect of external force to reduce the external diameter, can practice thrift the space when specifically using.
Description
Technical Field
The utility model relates to an optical cable technical field, in particular to type of compacting flame retardant fire-resistant multicore optical cable.
Background
With the development of society, modern human life and work increasingly depend on electrification and intellectualization, but the application results of the society cannot be separated from the hardware construction of a modern information network, and the hardware construction of the information network cannot be separated from the construction and the use of a communication cable.
As is well known, our present day communications cables have entered the optical fiber era to accommodate high speed and massive traffic information transmission; meanwhile, people's life and work in modern cities are mostly carried out in high-rise buildings, so that the problem of inevitably facing people is also solved by erecting optical cables in the high-rise buildings to meet the needs of people. Based on the limitation of space on the building and the rapid expansion of informatization requirements, the condition that the building meets the cable erection in space is less and less, and the traditional optical cable with large core number has the defects of large outer diameter and large weight in the scene. In addition, due to the material problem of the traditional optical cable jacket, the cable jacket has the characteristic of flammability, so that the fire safety of buildings is threatened, and when a fire disaster happens, a fire source is easily assisted to form a flame path from bottom to top, and the cable jacket has the effect similar to a fire fuse; meanwhile, when a fire disaster occurs, because the existing fire fighting means or water extinguishment is more, the surface of the optical cable is burnt, and the inner core is exposed, the high-pressure impact is caused to influence the use, so that the signal interruption and the line damage are caused, the difficulty is caused to the fire fighting work, and the loss is additionally increased.
In addition, based on the complicated external environment of multicore cable setting, other circumstances that can cause the optical cable to damage still, current multicore cable often can cause whole most and whole multicore cable to be unable to use after being damaged, and the loss is big.
SUMMERY OF THE UTILITY MODEL
In view of present optical cable external diameter big, easy burning and easily receive to wash by water and influence to and cause whole multicore optical cable to use the defect that receives the influence easily after the damage, the utility model provides a compact flame-retardant fire-resistant multicore optical cable through specific structure setting, makes more compact, and the external diameter is littleer, and inner core mutual separation has fire-retardant fire-resistant characteristic simultaneously, has more practice thrift the space in using, can be fire-retardant in the face of the conflagration problem, and does not influence the advantage of use in the face of the impact of fire-fighting water yet.
The technical scheme of the utility model as follows: a compact flame-retardant fire-resistant multi-core optical cable comprises a plurality of optical unit wire harnesses, wherein the optical unit wire harnesses are circumferentially distributed into an optical unit total beam in a circular manner, the optical unit total beam is formed by twisting the optical unit wire harnesses, and an inner core playing a tensile role in the whole optical cable is arranged at the center of the optical unit total beam;
each light unit wiring harness comprises an optical fiber communication unit and a first flame retardant body, and the first flame retardant body is wrapped outside the optical fiber communication unit;
a second flame retardant body is wrapped outside the light unit total beam;
the first flame-retardant body and the second flame-retardant body are both made of elastic materials.
Further, preferably, there is or is not a filling mat between each of the light unit strands.
Further, the filling mat layer preferably includes, but is not limited to, a mica tape, a polyester tape, a water blocking tape, and a non-woven fabric.
Further, preferably, the inner core is coated or not coated with a plastic coating.
Further, as a preference, the plastic sheathing layer includes but is not limited to a plastic sheathing layer made of a low-smoke halogen-free flame retardant polyolefin material.
Further, preferably, the second flame-retardant body comprises at least one flame-retardant heat-insulating layer made of a flame-retardant heat-insulating material.
Further, preferably, the second flame retardant body comprises an inner flame retardant and heat insulation layer made of double-sided mica tapes, a middle flame retardant and heat insulation layer made of a low-smoke halogen-free flame retardant polyolefin material and an outer flame retardant and heat insulation layer made of a ceramic polyolefin material; the inner flame-retardant heat-insulation layer wraps the outside of the light unit main beam.
Further, preferably, a stainless steel belt layer is arranged between the outer flame-retardant heat-insulating layer and the middle flame-retardant heat-insulating layer;
the first flame retardant body is made of a ceramic polyolefin material.
Further, preferably, the optical fiber communication unit comprises at least one communication optical fiber, an inner protection layer with tensile and water absorption functions is wrapped outside the communication optical fiber, and an outer protection layer with flame retardant function is wrapped outside the inner protection layer.
Further, preferably, the outer protective layer further comprises two layers, and one of the two layers is made of mica tape or low-smoke halogen-free flame-retardant polyolefin material.
Has the advantages that: the utility model discloses the design is novel, reasonable in design, and convenient to use, the utility model discloses a first flame retardant body and second flame retardant body prevent fires fire-retardant, do benefit to fire prevention safety, be the optical unit total bundle through the transposition of a plurality of mutually independent optical unit pencil simultaneously, under the impaired condition of part, do not influence other communications, and each optical unit pencil transposition, draw in more and compact, the external diameter that does benefit to whole multicore optical cable reduces, first flame retardant body and second flame retardant body adopt elastic material to make simultaneously, also can be to the internal contraction under the effect of external force, in order to reduce the external diameter, can practice thrift the space when specifically using.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an optical fiber communication unit according to an embodiment of the present invention.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
referring to fig. 1, a compact flame-retardant and fire-resistant multi-core optical cable has a plurality of optical unit bundles 1, the optical unit bundles 1 are circumferentially arranged in a circular shape to form an optical unit total bundle, the optical unit total bundle is formed by twisting the optical unit bundles 1, and an inner core 6 having a tensile effect on the whole optical cable is arranged in the center of the optical unit total bundle;
each of the light unit harnesses 1 includes an optical fiber communication unit and a first flame retardant body wrapped outside the optical fiber communication unit;
a second flame retardant body is wrapped outside the light unit total beam;
the first flame-retardant body and the second flame-retardant body are both made of elastic materials.
The utility model discloses in, optical unit pencil 1 is an independent pencil unit that has the optical fiber communication of fire-retardant thermal-insulated effect, and wherein, fire-retardant thermal-insulated effect is realized through first fire-retardant body, and optical fiber communication realizes through the optical fiber communication unit. A plurality of optical unit wiring harnesses 1 are twisted into a strand to form an optical unit total beam, so that the integral multi-core optical cable is functionally realized. In order to ensure the tensile strength of the whole optical cable in use, an inner core 6 is arranged at the center of the optical unit total bundle, namely, the optical unit bundles 1 are twisted on the periphery of the inner core 6. The inner core 6 actually supports each light unit bundle 1 in actual use. It should be noted that, based on the complicated environment that sets up of optical cable, all can cause the optical cable to damage under the multiple condition, bite, the worm is eaten, the striking, roll and maliciously cut etc. like the mouse, consequently, adopt the utility model provides a behind the structure, its communication stability's security greatly increased. The second flame retardant body is arranged outside the light unit total beam, plays a role in fire protection for the light unit total beam, and does not play a role in a fuse due to fire when in specific use, thereby having good flame retardant effect. The same applies to the first flame-retardant body. First fire-retardant body and second fire-retardant body all adopt fire-retardant material or/and fire-retardant structure to make, and its purpose is fire-retardant, because fire-retardant material and structure are including multiple in current technique, as long as the utility model discloses corresponding structure and the material of adopting under the whole thinking of scheme all belong to the utility model discloses the scheme protected. In addition, for under the exogenic action, the utility model provides an optical cable can reduce the external diameter to reduce the usage space, first fire-retardant body and second fire-retardant body all adopt elastic material, in order to satisfy this effect, if adopt rigid material to make then can't satisfy. It should be noted that the elastic material and the rigid material should be understood by those skilled in the art, and the relative properties of the elastic material and the rigid material should not be quantified as required.
In the specific implementation, as a further preference, there is or is not a filling mat 10 between each of the light unit wiring harnesses 1.
In the preferred embodiment, the filling pad layer 10 may be disposed between the light unit wire harnesses 1, or the filling pad layer 10 may not be disposed, that is, each light unit wire harness 1 is directly attached and combined together. In the case where the filling mat 10 is provided, the material of the filling mat 10 is mainly determined according to the specifically desired functional purpose, such as water resistance, heat insulation, flame retardancy, and the like.
In particular implementation, the filling pad layer 10 includes, but is not limited to, mica tape, polyester tape, water-blocking tape and non-woven fabric.
In the preferred embodiment, several specific products and materials are provided as the filling pad layer 10 to help realize corresponding functions, wherein, for example, the mica tape can be used for flame retardation and heat insulation, and the water blocking tapes are used for isolating and waterproofing each other, and the specific functions are determined according to the characteristics of the materials of the respective products.
In particular implementation, the inner core 6 is preferably provided with or without a plastic coating 11.
In this preferred scheme, inner core 6 determines whether to set up the cover according to actual conditions and moulds layer 11, and when the external diameter of inner core 6 was less and had great clearance between the optical unit pencil 1, then can mould layer 11 through the cover and fill to satisfy stable contact, make holistic structure more stable, the effect is better. When the outer diameter of the inner core is larger and a smaller gap is formed between the inner core and the optical unit wiring harness 1, or no gap is formed, the plastic coating layer 11 is not arranged, and the inner core 6 is directly contacted with the optical unit wiring harness 1, so that the effect of stable structure is achieved.
In specific implementation, as a further preference, the plastic sheathing layer 11 includes, but is not limited to, a plastic sheathing layer 11 made of a low-smoke halogen-free flame retardant polyolefin material.
In the preferred embodiment, a specific material of the plastic sheathing layer 11 is given, such as a low-smoke halogen-free flame-retardant polyolefin material, but actually not limited thereto, because the plastic sheathing layer 11 can be made of materials with different functions according to the actual use effect. The low-smoke halogen-free flame-retardant polyolefin material has good fireproof and heat-insulating effects.
In particular implementation, as a further preference, the second flame-retardant body comprises at least one flame-retardant heat-insulating layer made of a flame-retardant material.
The second flame-retardant body is provided in the preferred scheme to be formed by manufacturing one or more flame-retardant materials into the flame-retardant heat-insulating layer, because the flame-retardant materials are various and each flame-retardant material has other corresponding functions and effects, the flame-retardant heat-insulating layer manufactured by adopting different flame-retardant materials can not only resist flame, but also meet other requirements. Regarding other properties of the material with flame retardant property, related materials in the prior art are adopted in application, and are not described herein.
In specific implementation, as further preferable, the second flame retardant body comprises an inner flame retardant and heat insulation layer 2 made of double-sided mica tape, a middle flame retardant and heat insulation layer 3 made of low-smoke halogen-free flame retardant polyolefin material and an outer flame retardant and heat insulation layer 4 made of ceramic polyolefin material; the inner flame-retardant heat-insulation layer 2 is wrapped outside the inner protective section pipe 1.
In the preferred scheme, the second flame-retardant body consists of three layers of flame-retardant and heat-insulating layers, and the specific materials and the layer arrangement are as described above. Mica tape, low smoke and zero halogen flame retardant polyolefin material and ceramic polyolefin material are current material, and its specific effect and attribute do not do here and give unnecessary details the utility model discloses in also reach corresponding effect according to corresponding material attribute.
In specific implementation, a stainless steel strip layer 5 is preferably arranged between the outer flame-retardant heat-insulating layer 4 and the middle flame-retardant heat-insulating layer 3.
In the preferred scheme, the armor is formed by arranging the stainless steel band layer 5, so that the effects of preventing rat bite on one hand and resisting the impact of fire water and the like on the other hand can be achieved, the safety is protected and the integral shape is kept. Since the preferable proposal is carried out on the previous proposal, the stainless steel band layer 5 is arranged between the outer flame-retardant heat-insulating layer 4 and the middle flame-retardant heat-insulating layer 3, and the specific situations of mouse bite and external force impact, the thickness of the outer flame-retardant heat-insulating layer 4 and the like are combined to be arranged as the optimal proposal.
In specific implementation, as a further preferred mode, referring to fig. 2, the optical fiber communication unit comprises at least one communication optical fiber 7, an inner protective layer 8 with tensile and water absorption functions is wrapped outside the communication optical fiber 7, and an outer protective layer 9 with flame retardant functions is wrapped outside the inner protective layer 8.
In the preferred embodiment, a specific arrangement structure of the optical fiber communication unit is provided, wherein the number of the communication optical fibers 7 is at least one, and the number of the communication optical fibers is 1 to 24 in the actual production design, and the communication optical fibers are aggregated into a bundle. In the implementation, the communication optical fiber 7 is made of a high-temperature resistant optical fiber so as not to affect the use under high-temperature conditions. Interior sheath 8 is direct to be wrapped up in communication optical fiber 7's outside, combines the specific service environment of optical cable, and interior sheath 8 can also play tensile and water absorption in addition to direct parcel in order to play the guard action outside communication optical fiber 7, consequently interior sheath 8 can adopt the aramid yarn that blocks water to make, plays better guard action to communication optical fiber 7. The high-temperature-resistant optical fiber is characterized in that a coating is arranged on the surface of the optical fiber, and in order to achieve the purpose, the coating can be made of polyimide materials which have high modulus, high tensile strength, flame resistance and good chemical stability and can bear the high temperature of 300 ℃ for a long time, so that the optical fiber can be effectively protected from normal operation at the high temperature. The outer diameter of the optical fiber communication unit is preferably 1.2 to 3.0mm, and more preferably, may be 1.2 to 1.8 mm.
In the specific implementation, as a further preferred, the outer sheath 9 further includes two layers, and one of the two layers is made of mica tape or low-smoke halogen-free flame-retardant polyolefin material.
In the preferred scheme, the outer protective layer 9 is divided into two layers, namely an inner layer and an outer layer, and can be made of mica tapes and low-smoke halogen-free flame-retardant polyolefin materials, and the sequence is not limited. In the specific implementation process, the outer layer can be made of mica tapes, and the inner layer is made of low-smoke halogen-free flame-retardant polyolefin materials.
In particular implementation, as a further preference, the first flame retardant body is made of a ceramic polyolefin material.
In the preferred scheme, the first flame retardant body is made of the ceramic polyolefin material, so that the flame retardant and heat insulation effect is good.
In the specific implementation, in addition to the above preferred embodiments, the mentioned mica tapes, including the bidirectional mica tape, preferably have a thickness of 0.08-0.15mm and a width of 6.5-12.5mm, and the number of the independent fireproof optical fiber functional units formed by wrapping the optical fiber communication unit with the first flame retardant is preferably 3-8, and preferably 4-6.
The ceramic polyolefin fan-shaped sheath is made of a ceramic polyolefin material which can rapidly generate a complete ceramic shell at a temperature of above 650 ℃ or under a flame condition, the generated ceramic shell is not cracked or dripped, and the ceramic polyolefin fan-shaped sheath has excellent oxygen and heat insulation effects, can effectively isolate the invasion of high-temperature flame to internal materials, delays the thermal decomposition of the internal materials, and ensures the effective operation of the optical cable under the fire condition. The armor formed by the stainless steel strip has the functions of bearing the spraying impact force of the optical cable and the slow-release high-pressure water gun on the optical cable when a fire disaster happens, and preventing the rat bite. The optical fiber communication unit is filled without grease, so that the influence of oil stains on the connection quality during construction connection is effectively avoided, and the construction efficiency is improved.
Generally, the utility model discloses extremely optimization scheme has fire-retardant fire-resistant, light in weight, big core number, little external diameter, blocks water, protection against rodents, branching function.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The compact flame-retardant fire-resistant multi-core optical cable is characterized by comprising a plurality of optical unit wire harnesses (1), wherein the optical unit wire harnesses (1) are circumferentially arranged into an optical unit total beam in a circular manner, the optical unit total beam is formed by twisting the optical unit wire harnesses (1), and an inner core (6) playing a tensile role in the whole optical cable is arranged in the center of the optical unit total beam;
each light unit wiring harness (1) comprises an optical fiber communication unit and a first flame retardant body, and the first flame retardant body is wrapped outside the optical fiber communication unit;
a second flame retardant body is wrapped outside the light unit total beam;
the first flame-retardant body and the second flame-retardant body are both made of elastic materials.
2. The compact, flame retardant, fire resistant multi-core optical cable of claim 1, wherein: with or without a filling mat (10) between each of the light unit bundles (1).
3. The compact, flame retardant, fire resistant multi-core optical cable of claim 2, wherein: the filling cushion layer (10) comprises but is not limited to mica tape, polyester tape, water-blocking tape and non-woven fabric.
4. The compact, flame retardant, fire resistant multi-core optical cable of claim 1, wherein: the inner core (6) is externally provided with or without a plastic coating layer (11).
5. The compact, flame retardant, fire resistant multi-core optical cable of claim 4, wherein: the plastic sheathing layer (11) comprises but is not limited to a plastic sheathing layer (11) made of low-smoke halogen-free flame-retardant polyolefin material.
6. The compact, flame retardant, fire resistant multi-core optical cable of claim 1, wherein: the second flame-retardant body comprises at least one flame-retardant heat-insulating layer made of flame-retardant heat-insulating materials.
7. The compact, flame retardant, fire resistant multi-core optical cable of claim 5, wherein: the second flame-retardant body comprises an inner flame-retardant heat-insulating layer (2) made of double-sided mica tapes, a middle flame-retardant heat-insulating layer (3) made of low-smoke halogen-free flame-retardant polyolefin material and an outer flame-retardant heat-insulating layer (4) made of ceramic polyolefin material; the inner flame-retardant heat-insulating layer (2) is wrapped outside the light unit total bundle.
8. The compact, flame retardant, fire resistant multi-core optical cable of claim 7, wherein: a stainless steel belt layer (5) is arranged between the outer flame-retardant heat-insulating layer (4) and the middle flame-retardant heat-insulating layer (3);
the first flame retardant body is made of a ceramic polyolefin material.
9. The compact, flame retardant, fire resistant multi-core optical cable of claim 1, wherein: the optical fiber communication unit comprises at least one communication optical fiber (7), an inner protective layer (8) with tensile and water absorption effects is wrapped outside the communication optical fiber (7), and an outer protective layer (9) with flame retardant effect is wrapped outside the inner protective layer (8).
10. The compact, flame retardant, fire resistant multi-core optical cable of claim 9, wherein: the outer protective layer (9) comprises two layers, and one of the two layers is made of mica tape or low-smoke halogen-free flame-retardant polyolefin material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921256967.0U CN210803803U (en) | 2019-07-31 | 2019-07-31 | Compact flame-retardant fire-resistant multi-core optical cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921256967.0U CN210803803U (en) | 2019-07-31 | 2019-07-31 | Compact flame-retardant fire-resistant multi-core optical cable |
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| CN210803803U true CN210803803U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903518A (en) * | 2021-11-03 | 2022-01-07 | 无锡博联特光电科技有限公司 | High-torsion-resistance and aging-resistance optical fiber cable |
-
2019
- 2019-07-31 CN CN201921256967.0U patent/CN210803803U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903518A (en) * | 2021-11-03 | 2022-01-07 | 无锡博联特光电科技有限公司 | High-torsion-resistance and aging-resistance optical fiber cable |
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