CN113130119A - Flame-retardant optical fiber composite cable - Google Patents
Flame-retardant optical fiber composite cable Download PDFInfo
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- CN113130119A CN113130119A CN202010044534.XA CN202010044534A CN113130119A CN 113130119 A CN113130119 A CN 113130119A CN 202010044534 A CN202010044534 A CN 202010044534A CN 113130119 A CN113130119 A CN 113130119A
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- layer
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- optical fiber
- retardant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
- H01B7/1815—Protections not provided for in groups H01B7/182 - H01B7/26 composed of longitudinal inserts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1865—Sheaths comprising braided non-metallic layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Abstract
A flame-retardant optical fiber composite cable comprises an optical fiber component, a lead, a reinforcing piece, a reinforcing core, a flame-retardant filling layer, a glass fiber layer, an insulating layer, a shielding layer, a flame-retardant layer and an armor layer; the optical fiber assembly comprises a wire core, a sleeve solid water-blocking filling layer, an inner shielding layer and a loose sleeve; the reinforced core is arranged at the central position of the optical fiber assemblies; the wires are arranged between adjacent optical fiber assemblies; the reinforcing piece comprises two groups of reinforcing plates which are arranged vertically, a plurality of strip-shaped holes are arranged in parallel on the reinforcing plates at equal intervals, and openings are formed in the strip-shaped holes at the edges of the reinforcing plates; the optical fiber assembly, the lead and the reinforcing piece are all arranged inside the glass fiber layer, and the flame-retardant filling layer is filled inside the glass fiber layer. The cable has good flame retardance, flexibility, tensile strength, insulativity, electromagnetic shielding performance and fire resistance, has good protection effect, and is safer to use.
Description
Technical Field
The invention relates to the field of cable equipment, in particular to a flame-retardant optical fiber composite cable.
Background
A fire refers to a disaster caused by uncontrolled combustion in time and space. Of the various disasters, fire is one of the most frequent, most common, major disasters that have led to public safety and social development.
In order to save more lives, properties and information from an uninhabited fire scene, the application of the fireproof cable is becoming important, and the fireproof cables on the market at present are classified into rigid and flexible according to the structural characteristics. Rigid Mineral Insulated Cable the rigid Mineral Insulated Cable (Mineral Insulated Cable) is called M industrial Cable for short for the defects in reliability, production and laying, and gradually moves out of the market in developed countries in Europe and America, so that the flexible Mineral Insulated fireproof Cable becomes a mainstream Cable product in the fireproof field.
The metal sleeve of the general cable adopts a copper sleeve, the process is complex, the efficiency is low, the cost is high, the isolation layer often adopts a material with a lower heating temperature, and the isolation layer cannot be isolated, so that the insulation material is heated to be broken, and the phenomena of cable short circuit and the like are often caused. Meanwhile, the cable is not easy to bend in the using process and is inconvenient to use.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides the flame-retardant optical fiber composite cable which has good flame retardance, insulativity, flexibility and electromagnetic shielding effect, is convenient to bend, is not easy to deform and is safer to use.
(II) technical scheme
In order to solve the problems, the invention provides a flame-retardant optical fiber composite cable which comprises an optical fiber assembly, a conducting wire, a reinforcing piece, a reinforcing core, a flame-retardant filling layer, a glass fiber layer, an insulating layer, a shielding layer, a flame-retardant layer and an armor layer;
the optical fiber assembly comprises a wire core, a sleeve solid water-blocking filling layer, an inner shielding layer and a loose sleeve; the wire core is provided with a plurality of strands and is positioned inside the inner shielding layer; a sleeve solid water-blocking filling layer is filled in the inner shielding layer; the loose tube is arranged outside the inner shielding layer; four groups of optical fiber assemblies are uniformly distributed along the ring; the reinforced core is arranged at the central position of the optical fiber assemblies; the conducting wire is arranged between the adjacent optical fiber assemblies, and the periphery of the conducting wire is coated with an insulating layer; the reinforcing piece comprises two groups of reinforcing plates which are arranged vertically, a plurality of strip-shaped holes are arranged in parallel on the reinforcing plates at equal intervals, and openings are formed in the strip-shaped holes at the edges of the reinforcing plates; the reinforcing pieces are arranged in four groups; the optical fiber assemblies are correspondingly arranged between the two groups of reinforcing plates of the reinforcing piece one by one;
the optical fiber assembly, the lead and the reinforcing piece are all arranged inside the glass fiber layer, and the flame-retardant filling layer is filled inside the glass fiber layer;
the insulating layer is arranged at the periphery of the glass fiber layer in a covering manner; the shielding layer is arranged at the periphery of the insulating layer in a covering mode; the fireproof layer is arranged on the periphery of the insulating layer in a wrapping mode; the armor layer is coated and arranged on the periphery of the fire-resistant layer.
Preferably, the length of the strip-shaped holes is less than half of the width of the reinforcing plate.
Preferably, the insulating layer is a polyethylene layer or a rubber layer.
Preferably, the flame-retardant filling layer is a flame-retardant polyethylene bubble layer.
Preferably, the inside of the flame-retardant filling layer is provided with the alumina flame-retardant particles.
Preferably, the fire-resistant layer is a nano environment-friendly fireproof mineral insulating layer.
The technical scheme of the invention has the following beneficial technical effects:
according to the invention, the sleeve solid water-blocking filling layer is arranged on the periphery of the wire core, the waterproof performance of the wire core is improved by the sleeve solid water-blocking filling layer, the inner shielding layer and the shielding layer play a double-layer shielding role, and the electromagnetic shielding performance of the equipment is improved. The optical fiber assemblies are correspondingly arranged between the two groups of reinforcing plates of the reinforcing piece one by one, and when the cable is bent in a small amplitude, the reinforcing piece deforms and extrudes the strip-shaped holes, so that the bending in a small amplitude is realized; when the cable is bent greatly, the reinforcing piece is bent and deformed, and the reinforcing piece cannot recover the original shape after being deformed so as to preserve the bent shape, so that the bending state and the bending angle of the cable cannot be changed, the cable is protected, and the condition that the cable core inside the cable is broken due to repeated and multi-angle bending of the cable is prevented; meanwhile, the reinforcing core further improves the flexibility and tensile property of the cable and improves the service performance of the cable.
According to the invention, the flame-retardant filling layer, the glass fiber layer, the insulating layer, the shielding layer, the flame-retardant layer and the armor layer are used for improving the flame retardance, the flexibility, the tensile strength, the insulativity, the electromagnetic shielding performance and the fire-resistant strength of the cable and have a good protection effect on the cable; wherein, solid-state water-blocking filling layer and fire-retardant filling layer all have fine fire behaviour, use safelyr.
Drawings
Fig. 1 is a schematic structural diagram of a flame-retardant optical fiber composite cable according to the present invention.
Fig. 2 is a schematic structural diagram of an optical fiber assembly in the flame-retardant optical fiber composite cable according to the present invention.
Fig. 3 is a schematic view of a part of the structure of the flame-retardant optical fiber composite cable according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-3, the flame-retardant optical fiber composite cable provided by the present invention comprises an optical fiber assembly 1, a conductor 2, a reinforcement 3, a reinforcing core 4, a flame-retardant filling layer 5, a glass fiber layer 6, an insulating layer 7, a shielding layer 8, a flame-retardant layer 9, and an armor layer 10;
the optical fiber component 1 comprises a wire core 11, a sleeve solid water-blocking filling layer 12, an inner shielding layer 13 and a loose sleeve 14; the wire core 11 is provided with a plurality of strands and is positioned inside the inner shielding layer 13; the inner shielding layer 13 is internally filled with a sleeve solid water-blocking filling layer 12; the loose tube 14 is arranged outside the inner shield layer 13; four groups of optical fiber assemblies 1 are uniformly distributed along the ring shape; the reinforced core 4 is arranged at the central position of the multi-group optical fiber assembly 1; the conducting wire 2 is arranged between the adjacent optical fiber assemblies 1, and the periphery of the conducting wire 2 is coated with an insulating layer; the reinforcing piece 3 comprises two groups of reinforcing plates which are arranged vertically, a plurality of strip-shaped holes 31 are arranged in parallel at equal intervals on the reinforcing plates, and the strip-shaped holes 31 form openings at the edges of the reinforcing plates; four groups of reinforcing pieces 3 are arranged; the optical fiber assemblies 1 are correspondingly arranged between the two groups of reinforcing plates of the reinforcing part 3 one by one;
the optical fiber assembly 1, the lead 2 and the reinforcing piece 3 are all arranged inside the glass fiber layer 6, and the flame-retardant filling layer 5 is filled inside the glass fiber layer 6;
the insulating layer 7 is coated on the periphery of the glass fiber layer 6; the shielding layer 8 is arranged on the periphery of the insulating layer 7 in a coating mode; the fireproof layer 9 is coated on the periphery of the insulating layer 7; the armor layer 10 is wrapped around the outer periphery of the refractory layer 9.
In the invention, the sleeve solid water-blocking filling layer 12 is arranged on the periphery of the wire core 11, the sleeve solid water-blocking filling layer 12 improves the waterproof performance of the wire core 11, and the inner shielding layer 13 and the shielding layer 8 play a double-layer shielding role, so that the electromagnetic shielding performance of the equipment is improved. The optical fiber assemblies 1 are correspondingly arranged between the two groups of reinforcing plates of the reinforcing part 3 one by one, and when the cable is bent in a small amplitude, the reinforcing part 3 deforms and presses the strip-shaped hole 31, so that the small-amplitude bending is realized; when the cable is bent greatly, the reinforcing part 3 is bent and deformed, the reinforcing part 3 cannot restore the original shape after being deformed, and the bent shape is stored, so that the bending state and the bending angle of the cable cannot be changed, the cable is protected, and the condition that the cable core inside the cable is broken due to repeated and multi-angle bending of the cable is prevented; meanwhile, the reinforcing core 4 further improves the flexibility and tensile property of the cable and improves the service performance of the cable.
In the invention, the flame-retardant filling layer 5, the glass fiber layer 6, the insulating layer 7, the shielding layer 8, the flame-retardant layer 9 and the armor layer 10 are used for improving the flame retardance, the flexibility, the tensile strength, the insulativity, the electromagnetic shielding performance and the fire-resistant strength of the cable and have good protection effect on the cable; wherein, the solid water-blocking filling layer 12 and the flame-retardant filling layer 5 both have good flame retardant property and are safer to use.
In an alternative embodiment, the length of the strip-shaped holes 31 is less than half the width of the reinforcing plate, so that the reinforcing plate can be deformed with slight curvature without affecting the rigidity of the reinforcing plate.
In an alternative embodiment, the insulating layer 7 is a polyethylene layer or a rubber layer, and has good insulating property and good wear-resistant and waterproof properties.
In an alternative embodiment, the flame-retardant filled layer 5 is a flame-retardant polyethylene bubble layer.
In an alternative embodiment, the fire-retardant filler layer 5 is internally provided with fire-retardant particles of alumina.
In an alternative embodiment, armor 10 is a layer of aluminum wire.
In an alternative embodiment, the fire-resistant layer 9 is a nano environment-friendly fire-proof mineral insulating layer.
It is noted that the cable has good flame retardancy, wear resistance and flexibility, and is safer to use.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. The flame-retardant optical fiber composite cable is characterized by comprising an optical fiber component (1), a lead (2), a reinforcing piece (3), a reinforcing core (4), a flame-retardant filling layer (5), a glass fiber layer (6), an insulating layer (7), a shielding layer (8), a flame-retardant layer (9) and an armor layer (10);
the optical fiber assembly (1) comprises a wire core (11), a sleeve solid water-blocking filling layer (12), an inner shielding layer (13) and a loose sleeve (14); the wire core (11) is provided with a plurality of strands and is positioned inside the inner shielding layer (13); a sleeve solid water-blocking filling layer (12) is filled in the inner shielding layer (13); the loose tube (14) is arranged outside the inner shielding layer (13); four groups of optical fiber assemblies (1) are uniformly distributed along the ring shape; the reinforced core (4) is arranged at the central position of the multiple groups of optical fiber assemblies (1); the conducting wire (2) is arranged between the adjacent optical fiber assemblies (1), and the periphery of the conducting wire (2) is coated with an insulating layer; the reinforcing piece (3) comprises two groups of reinforcing plates which are perpendicular to each other, a plurality of strip-shaped holes (31) are arranged in parallel on the reinforcing plates at equal intervals, and openings are formed at the edges of the reinforcing plates by the strip-shaped holes (31); four groups of reinforcing pieces (3) are arranged; the optical fiber assemblies (1) are correspondingly arranged between the two groups of reinforcing plates of the reinforcing piece (3) one by one;
the optical fiber assembly (1), the lead (2) and the reinforcing piece (3) are all arranged inside the glass fiber layer (6), and the glass fiber layer (6) is filled with the flame-retardant filling layer (5);
the insulating layer (7) is coated on the periphery of the glass fiber layer (6); the shielding layer (8) is arranged on the periphery of the insulating layer (7) in a covering mode; the fireproof layer (9) is coated on the periphery of the insulating layer (7); the armor layer (10) is coated on the periphery of the fire-resistant layer (9).
2. The flame retardant fiber composite cable of claim 1, wherein the length of the strip-shaped hole (31) is less than half the width of the strength plate.
3. The flame retardant fiber composite cable according to claim 1, wherein the insulating layer (7) is a polyethylene layer or a rubber layer.
4. The flame retardant fiber composite cable according to claim 1, wherein the flame-retardant filling layer (5) is a flame-retardant polyethylene bubble layer.
5. The flame retardant fiber composite cable according to claim 1, wherein the flame retardant filler layer (5) is internally provided with the flame retardant particles of aluminum oxide.
6. The flame retardant fiber composite cable of claim 1, wherein the armor layer (10) is an aluminum wire layer.
7. The flame retardant fiber composite cable of claim 1, wherein the flame retardant layer (9) is a nano environmental-friendly fireproof mineral insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044534.XA CN113130119B (en) | 2020-01-15 | 2020-01-15 | Flame-retardant optical fiber composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010044534.XA CN113130119B (en) | 2020-01-15 | 2020-01-15 | Flame-retardant optical fiber composite cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113130119A true CN113130119A (en) | 2021-07-16 |
| CN113130119B CN113130119B (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010044534.XA Active CN113130119B (en) | 2020-01-15 | 2020-01-15 | Flame-retardant optical fiber composite cable |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05249354A (en) * | 1992-11-20 | 1993-09-28 | Hitachi Cable Ltd | Running water preventive type optical fiber cable |
| CN2411543Y (en) * | 1999-12-16 | 2000-12-20 | 江采华 | Electric wire conduit |
| GB2368404A (en) * | 2000-10-13 | 2002-05-01 | British Telecomm | Hybrid cable with twisted pairs of metallic electrical cables alternating with optical cables |
| CN204204448U (en) * | 2014-10-11 | 2015-03-11 | 广东华坤新能源股份有限公司 | A kind of Novel photovoltaic cable |
| CN108399973A (en) * | 2018-04-25 | 2018-08-14 | 河南昶明航标机电设备有限公司 | A kind of high-efficiency shielding type composite cable |
| CN209543995U (en) * | 2019-03-22 | 2019-10-25 | 安徽新沪电缆有限公司 | A kind of isolation circulating type urban track traffic electric power composite cable |
-
2020
- 2020-01-15 CN CN202010044534.XA patent/CN113130119B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05249354A (en) * | 1992-11-20 | 1993-09-28 | Hitachi Cable Ltd | Running water preventive type optical fiber cable |
| CN2411543Y (en) * | 1999-12-16 | 2000-12-20 | 江采华 | Electric wire conduit |
| GB2368404A (en) * | 2000-10-13 | 2002-05-01 | British Telecomm | Hybrid cable with twisted pairs of metallic electrical cables alternating with optical cables |
| CN204204448U (en) * | 2014-10-11 | 2015-03-11 | 广东华坤新能源股份有限公司 | A kind of Novel photovoltaic cable |
| CN108399973A (en) * | 2018-04-25 | 2018-08-14 | 河南昶明航标机电设备有限公司 | A kind of high-efficiency shielding type composite cable |
| CN209543995U (en) * | 2019-03-22 | 2019-10-25 | 安徽新沪电缆有限公司 | A kind of isolation circulating type urban track traffic electric power composite cable |
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|---|---|
| CN113130119B (en) | 2022-05-13 |
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