CN110098012A - A kind of B1 grades of fire-retardant inter-city rail transit cable and its manufacturing method - Google Patents
A kind of B1 grades of fire-retardant inter-city rail transit cable and its manufacturing method Download PDFInfo
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- CN110098012A CN110098012A CN201910351321.9A CN201910351321A CN110098012A CN 110098012 A CN110098012 A CN 110098012A CN 201910351321 A CN201910351321 A CN 201910351321A CN 110098012 A CN110098012 A CN 110098012A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/221—Sheathing; Armouring; Screening; Applying other protective layers filling-up interstices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
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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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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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
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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
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Abstract
This application involves a kind of B1 grades fire-retardant inter-city rail transit cables, including the cable core sheath coated outside cable core and cable core, the cable core includes at least one line group, each line group includes high fire-retardance casing, the line group sheath of several insulated single wires and cladding high fire-retardance casing in high fire-retardance casing, the line group sheath successively includes alkali-free glass fibre band and sheath from the inside to the outside, between the insulated single wire, magnesia filler is filled between insulated single wire and the high fire-retardance casing, the cable core sheath includes the polyester belt wrapping layer set gradually from the inside to the outside, high fire-retardance belting layer, thermal insulation layer, metal screen layer, liner layer, alkali-free glass fibre braiding layer, armor and oversheath.Structure of the invention is rationally simple, and service performance is good, and there is superior thermal stability, chemical resistance, moisture resistance, mechanical and physical performance, high flame resistance, high temperature resistance, compressive property, anti-animal tooth performances, long service life, the high safety and reliability such as to sting.
Description
Technical field
The application belongs to field of cable technology, more particularly, to a kind of B1 grades fire-retardant inter-city rail transit cable and its manufacture
Method.
Background technique
Subway, light rail, tramcar and magnetic suspension train are usually one of maximum infrastructure in city, while being also city
The main artery and urban lifeline of city's passenger traffic.The public transport bigger as capacity, safety are directly closed
It is the life security to numerous passengers.Track traffic cable in the prior art, due to Cable Construction Design defect, to from it
The disaster resilience in inside and outside portion is poor.In the narrow space of underground, personnel and device height are intensive, once fire occurs, electricity
The self-extinguish time is long after cable burning, brings extreme difficulties to disaster relief work, causes bigger injury and loss.Therefore, to existing
There is track traffic cable to carry out technological innovation and has become what the trend requires.
Summary of the invention
The technical problem to be solved by the present invention is it is insufficient to solve the anti-flammability of track traffic cable in the prior art, from
And provide a kind of B1 grades of fire-retardant inter-city rail transit cable and its manufacturing method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of B1 grades of fire-retardant inter-city rail transit cable, including the cable core sheath coated outside cable core and cable core, the cable
Core includes at least one line group, each line group include high fire-retardance casing, several insulated single wires in high fire-retardance casing and
The line group sheath of high fire-retardance casing is coated, the line group sheath successively includes alkali-free glass fibre band and sheath, institute from the inside to the outside
It states between insulated single wire, be filled with magnesia filler, the cable core sheath packet between insulated single wire and the high fire-retardance casing
Include the polyester belt wrapping layer set gradually from the inside to the outside, high fire-retardance belting layer, thermal insulation layer, metal screen layer, liner layer, alkali-free glass
Glass fiber braiding layer, armor and oversheath.
The insulated single wire is by conductor and the insulating layer group being coated on outside the conductor in one of the embodiments,
At, wherein insulating layer uses high density polyethylene (HDPE) material.
The high fire-retardance casing uses low smoke halogen-free flame-retardant polyolefin material, the high resistant in one of the embodiments,
Combustion casing wall thickness is 0.5~1.0mm.
The alkali-free glass fibre band is coated on outside the high fire-retardance casing in a manner of longitudinal wrap in one of the embodiments,
Side, the alkali-free glass fibre band fires bundle yarn by helical resistive to be fixed with the high fire-retardance casing.
The alkali-free glass fibre tape thickness is not less than 0.05mm in one of the embodiments,.
The line group sheath uses low smoke halogen-free flame-retardant polyolefin material, the line group shield in one of the embodiments,
Layer is with a thickness of 0.8~1.2mm.
The thermal insulation layer and liner layer use low smoke halogen-free flame-retardant polyolefin material in one of the embodiments, described
Thermal insulation layer and the thickness of liner layer be respectively 1.0~1.8mm.
The alkali-free glass fibre braiding layer is the alkali-free for being not less than 0.1mm using diameter in one of the embodiments,
Mesh grid made of glass fiber is woven by weaving.
The metal screen layer is aluminium sheath layer or composite sheath layer or copper shield in one of the embodiments,.
A kind of B1 grades of fire-retardant inter-city rail transit cable making method, for manufacturing such as aforementioned described in any item B1 grades of resistances
Fire inter-city rail transit cable, method the following steps are included:
Step 10, the insulated single wire is twisted；
Step 20, using filling and plastic sleeve technique by the magnesia it is tightly packed the twisted insulated single wire it
Between and the insulated single wire and the high fire-retardance casing in gap in；
Step 30, using longitudinal wrap extrusion process outside the high fire-retardance casing one layer of the longitudinal wrap alkali-free glass fibre band,
The fire-retardant bundle yarn is used to fix outside the alkali-free glass fibre band with spiral winding；
Step 40, have described in spiral winding it is fire-retardant prick yarn the alkali-free glass fibre band outside extrude one layer of sheath
Several line groups produced are made by twisting the cable core further according to demand by layer；
Step 50, the polyester belt wrapping layer, high fire-retardance belting layer, thermal insulation layer, aluminium shield are successively coated outside the cable core
Jacket layer or composite sheath layer or copper shield, liner layer, alkali-free glass fibre braiding layer, armor and oversheath.
The beneficial effects of the present invention are: structure of the invention is rationally simple, manufactures and be easy, service performance is good, has excellent
It is thermal stability more, chemical resistance, moisture resistance, mechanical and physical performance, high flame resistance, high temperature resistance, compressive property, anti-dynamic
Object tooth such as stings at performances, long service life, the high safety and reliability.
Detailed description of the invention
The technical solution of the application is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of B1 grades of the application fire-retardant inter-city rail transit cables.
Appended drawing reference in figure are as follows: 1, insulated single wire；2, conductor；3, insulating layer；4, magnesia；5, high fire-retardance casing；6,
Alkali-free glass fibre band；7, fire-retardant bundle yarn；8, sheath；9, line group；10, polyester belt wrapping layer；11, high fire-retardance belting layer；12, every
Thermosphere；13, metal screen layer；14, liner layer；15, alkali-free glass fibre braiding layer；16, armor；17, oversheath.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the application and simplifies description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the application protection scope.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in this application.
It is described in detail the technical solution of the application below with reference to the accompanying drawings and in conjunction with the embodiments.
Referring to FIG. 1, a kind of B1 grades of fire-retardant inter-city rail transit cable, including the cable core shield coated outside cable core and cable core
Layer, cable core include at least one line group 9, and each line group 9 includes several insulated single wires in high fire-retardance casing 5, high fire-retardance casing 5
1 and coat high fire-retardance casing 5 line group sheath, line group sheath from the inside to the outside successively include alkali-free glass fibre band 6 and sheath
8, between insulated single wire 1, be filled with 4 filler of magnesia between insulated single wire 1 and high fire-retardance casing 5, cable core sheath include by
It is interior to the polyester belt wrapping layer 10 set gradually outside, high fire-retardance belting layer 11, thermal insulation layer 12, metal screen layer 13, liner layer 14,
Alkali-free glass fibre braiding layer 15, armor 16 and oversheath 17.
Insulated single wire 1 is made of conductor 2 and the insulating layer being coated on outside conductor 23 in one of the embodiments,
In, insulating layer 3 uses high density polyethylene (HDPE) material, keeps cable physical property superior, and compressive resistance is high.
In order to make cable that there is superior high temperature resistance, anti-fatigue performance, wear-resisting property, corrosion resistance, anti-flammability
Can be good with chemical stability, extend cable service life, high fire-retardance casing 5 uses low smoke and zero halogen in one of the embodiments,
Fire retardant polyolefin material, preferably moral new material Co., Ltd's model specification of Shanghai side are the high fire-retardance thermoplasticity of FZD 1680GB
Low smoke halogen-free fire retardant polyolefin cable material.High fire-retardance casing 5 is made using plastic sleeve technique in one of the embodiments,
, casing wall thickness is 0.5~1.0mm.
Alkali-free glass fibre band 6 (is advanced when squeezing out along semi-finished product in one of the embodiments, with longitudinal wrap
Direction drag one layer of band) mode is coated on the outside of high fire-retardance casing 5, alkali-free glass fibre band 6 by fire-retardant the bundles yarn 7 of spiral and
High fire-retardance casing 5 is fixed.The high fire-retardance casing 5 for being coated with alkali-free glass fibre band 6 not only has high flame-retardant property, and has
Good protection against rodents effect.6 thickness of alkali-free glass fibre band is not less than 0.05mm in one of the embodiments,.
In order to make cable that there is superior high temperature resistance, anti-fatigue performance, wear-resisting property, corrosion resistance, anti-flammability
Can be good with chemical stability, extend cable service life, line group sheath uses low-smoke non-halogen flame-retardant in one of the embodiments,
Polyolefin material, moral new material Co., Ltd's model specification of the preferred Shanghai side of material are the high fire-retardance thermoplasticity of FZD 1680GB
Low smoke halogen-free fire retardant polyolefin cable material, line group covering thickness are 0.8~1.2mm.
Thermal insulation layer 12 and liner layer 14 use low smoke halogen-free flame-retardant polyolefin material in one of the embodiments, preferably
The thermoplastic low-smoke halogen-free flame-resistant polyolefin oxygen barrier electricity that moral new material Co., Ltd's model specification of Shanghai side is FZD 1502
Cable material.Thermal insulation layer 12 and liner layer 14 in the present embodiment, not only oxygen index (OI) is high, and has fabulous heat-insulated and oxygen barrier,
It is released when burning without halogen acid gas, toxicity corrosive gas burst size is few, and the smokescope of generation is low, with splendid fire-retardant
Performance and processing performance.The thickness of thermal insulation layer 12 and liner layer 14 is respectively 1.0~1.8mm in one of the embodiments,.
Alkali-free glass fibre braiding layer 15 is the alkali-free glass for being not less than 0.1mm using diameter in one of the embodiments,
Mesh grid made of glass fiber filament is woven by weaving, braiding tightness are not less than 90%.By such glass fiber
It is coated on outside high fire-retardance casing 5 using weaving disposal molding, process equipment and technique are all fairly simple, and alkali-free glass
There is fiber braiding layer 15 good fire retardant performance, anti-tensile to draw, while soft pliable is bent.
Metal screen layer 13 is aluminium sheath layer or composite sheath layer (such as ALPETH aluminum polyethylene sheath in one of the embodiments,
Layer etc.) or copper shield, make cable that there is superior shielding properties, cable in use, not by other extraneous factors
Interference keeps transmission signal undistorted, indeformable, improves the security reliability of cable to guarantee the stabilization of signal transmission.
The application further includes a kind of B1 grades of fire-retardant inter-city rail transit cable making method, for manufacturing foregoing B1
The fire-retardant inter-city rail transit cable of grade, method the following steps are included:
Step 10, insulated single wire is twisted；
Step 20, using filling and plastic sleeve technique that magnesia is tightly packed between twisted insulated single wire, and absolutely
In gap in edge single line and high fire-retardance casing；
Step 30, using longitudinal wrap extrusion process outside high fire-retardance casing one layer of alkali-free glass fibre band of longitudinal wrap, in alkali-free glass
Fire-retardant bundle yarn is used to fix with spiral winding outside glass fiber band；
Step 40, one layer of restrictive coating is extruded outside the alkali-free glass fibre band for having the fire-retardant bundle yarn of spiral winding, further according to need
If the main line group that will have been produced is asked to be made by twisting cable core；
Step 50, polyester belt wrapping layer, high fire-retardance belting layer, thermal insulation layer, aluminium sheath layer or comprehensive are successively coated outside cable core
Close restrictive coating or copper shield, liner layer, alkali-free glass fibre braiding layer, armor and oversheath.
Specifically, in one of the embodiments, first according to demand by the exhausted of produced 2 or 4 different colours
Edge single line 1 is twisted, using filling and plastic sleeve technique that magnesia 4 is tightly packed between twisted insulated single wire 1, and
In gap in insulated single wire 1 and high fire-retardance casing 5, using longitudinal wrap extrusion process in 5 one layer of alkali-free of outer longitudinal wrap of high fire-retardance casing
Glass fiber tape 6 is used fire-retardant bundle yarn 7 to be fixed outside alkali-free glass fibre band 6 with spiral winding, and is having spiral winding fire-retardant
It pricks outside the alkali-free glass fibre band 6 of yarn 7 and extrudes one layer of restrictive coating 8, utilize the several line groups 9 produced together further according to demand
Machine for making cable high-speedly is made by twisting cable core, and polyester belt wrapping layer 10, high fire-retardance belting layer 11, heat-insulated is then successively coated outside cable core
Layer 12, aluminium sheath layer or composite sheath layer or copper shield, liner layer 14, alkali-free glass fibre braiding layer 15, armor 16 and
Oversheath 17.
In conclusion it is easy to manufacture, service performance the beneficial effects of the present invention are: structure of the invention is rationally simple
It is good, there is superior thermal stability, chemical resistance, moisture resistance, mechanical and physical performance, high flame resistance, high temperature resistance, resistance to compression
Performance, anti-animal tooth such as sting at performances, long service life, the high safety and reliability.
It is enlightenment with the above-mentioned desirable embodiment according to the application, through the above description, relevant staff is complete
Full various changes and amendments can be carried out in the range of without departing from this item application technical idea.The technology of this item application
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of B1 grades of fire-retardant inter-city rail transit cable, which is characterized in that including the cable core shield coated outside cable core and cable core
Layer, the cable core includes at least one line group, and each line group includes high fire-retardance casing, several insulation in high fire-retardance casing
Single line and coat high fire-retardance casing line group sheath, the line group sheath from the inside to the outside successively include alkali-free glass fibre band and
Sheath between the insulated single wire, is filled with magnesia filler, the cable core between insulated single wire and the high fire-retardance casing
Sheath include the polyester belt wrapping layer set gradually from the inside to the outside, high fire-retardance belting layer, thermal insulation layer, metal screen layer, liner layer,
Alkali-free glass fibre braiding layer, armor and oversheath.
2. B1 grades of fire-retardant inter-city rail transit cable according to claim 1, which is characterized in that the insulated single wire is by leading
Body and the insulating layer being coated on outside conductor composition, wherein insulating layer uses high density polyethylene (HDPE) material.
3. B1 grades of fire-retardant inter-city rail transit cable according to claim 1, which is characterized in that the high fire-retardance casing is adopted
With low smoke halogen-free flame-retardant polyolefin material, the high fire-retardance casing wall thickness is 0.5~1.0mm.
4. B1 grades of fire-retardant inter-city rail transit cable according to claim 1, which is characterized in that the alkali-free glass fibre
Band is coated on the high fire-retardance outside of sleeve in a manner of longitudinal wrap, the alkali-free glass fibre band fired by helical resistive prick yarn with it is described
High fire-retardance casing is fixed.
5. B1 grades of fire-retardant inter-city rail transit cable according to claim 4, which is characterized in that the alkali-free glass fibre
Tape thickness is not less than 0.05mm.
6. B1 grades of fire-retardant inter-city rail transit cable according to claim 1, which is characterized in that the line group sheath uses
Low smoke halogen-free flame-retardant polyolefin material, the line group covering thickness are 0.8~1.2mm.
7. B1 grades of fire-retardant inter-city rail transit cable according to claim 1, which is characterized in that the thermal insulation layer and liner
Layer uses low smoke halogen-free flame-retardant polyolefin material, and the thickness of the thermal insulation layer and liner layer is respectively 1.0~1.8mm.
8. B1 grades of fire-retardant inter-city rail transit cable according to claim 1, which is characterized in that the alkali-free glass fibre
Braiding layer is mesh grid made of the alkali-free glass fibre silk using diameter not less than 0.1mm is woven by weaving.
9. B1 grades of fire-retardant inter-city rail transit cable according to claim 1, which is characterized in that the metal screen layer is
Aluminium sheath layer or composite sheath layer or copper shield.
10. a kind of B1 grades of fire-retardant inter-city rail transit cable making method, for manufacturing as preceding claims 1~9 are wherein appointed
The fire-retardant inter-city rail transit cable of B1 grade described in one, which is characterized in that method the following steps are included:
Step 10, the insulated single wire is twisted；
Step 20, using filling and plastic sleeve technique that the magnesia is tightly packed between the twisted insulated single wire, with
And in the gap in the insulated single wire and the high fire-retardance casing；
Step 30, using longitudinal wrap extrusion process outside the high fire-retardance casing one layer of the longitudinal wrap alkali-free glass fibre band, in institute
State uses the fire-retardant bundle yarn to fix with spiral winding outside alkali-free glass fibre band；
Step 40, have described in spiral winding it is fire-retardant prick yarn the alkali-free glass fibre band outside extrude one layer of restrictive coating,
Several line groups produced are made by twisting the cable core further according to demand；
Step 50, the polyester belt wrapping layer, high fire-retardance belting layer, thermal insulation layer, aluminium sheath layer are successively coated outside the cable core
Or composite sheath layer or copper shield, liner layer, alkali-free glass fibre braiding layer, armor and oversheath.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910351321.9A CN110098012A (en) | 2019-04-28 | 2019-04-28 | A kind of B1 grades of fire-retardant inter-city rail transit cable and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910351321.9A CN110098012A (en) | 2019-04-28 | 2019-04-28 | A kind of B1 grades of fire-retardant inter-city rail transit cable and its manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035429A (en) * | 2021-02-06 | 2021-06-25 | 安徽铁信光电科技有限公司 | Flame-retardant communication cable |
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| CN208111115U (en) * | 2018-03-16 | 2018-11-16 | 扬州市金阳光电缆有限公司 | A kind of urban track traffic high-performance active beacon cable |
| CN108922660A (en) * | 2018-08-19 | 2018-11-30 | 河南胜华电缆集团有限公司 | A kind of softness damp-proof and fireproof track traffic cable |
| CN109411116A (en) * | 2018-10-29 | 2019-03-01 | 通鼎互联信息股份有限公司 | A kind of high fire-retardance railway signal cable |
| CN209912577U (en) * | 2019-04-28 | 2020-01-07 | 江苏通鼎光电科技有限公司 | B1-grade flame-retardant intercity rail transit cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035429A (en) * | 2021-02-06 | 2021-06-25 | 安徽铁信光电科技有限公司 | Flame-retardant communication cable |
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Application publication date: 20190806 |