CN110033882A - A kind of fire prevention numeral signal cables for railway and its manufacturing method - Google Patents
A kind of fire prevention numeral signal cables for railway and its manufacturing method Download PDFInfo
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- CN110033882A CN110033882A CN201910333739.7A CN201910333739A CN110033882A CN 110033882 A CN110033882 A CN 110033882A CN 201910333739 A CN201910333739 A CN 201910333739A CN 110033882 A CN110033882 A CN 110033882A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/08—Screens specially adapted for reducing cross-talk
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
- H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
-
- 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
- H01B7/0009—Details relating to the conductive cores
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/56—Heating cables
Abstract
The present invention relates to field of cable technology, especially a kind of fire prevention numeral signal cables for railway and its manufacturing method, including intertwist body and signal wire pair, the intertwist body includes insulated wire cores and channelizing line, the channelizing line is stranded in insulated wire cores, the insulated wire cores include inner conductor and inner insulating layer, the inner insulating layer is wrapped on the outside of inner conductor, the shielded layer is coated on intertwist body surface, one layer of external insulation layer is wrapped up on the outside of the shielded layer, the signal wire is glued together to specially two external insulation layers, tensile layer is interspersed between the signal wire pair, the signal wire is enclosed with inner refractory layer to outside, oxygen barrier layer is suppressed on the outside of the inner refractory layer, the oxygen barrier layer surface rolling has external refractory layer.The features such as present invention transmission attenuation value in high and low temperature environment is small, and transmission rate is high, and transmission performance is reliable and stable, save the cost.
Description
Technical field
The present invention relates to field of cable technology more particularly to a kind of fire prevention numeral signal cables for railway and its manufacturers
Method.
Background technique
Recently as the fast development of Chinese Railway, china railway revenue kilometres reach 120,000 kilometers, at the forefront in the world,
Current national economy integrally faces the pressure of downlink, and it is sizable to pulling growth of the national economic to have to increase Railway Investment dynamics
Positive effect.
By increasing railway construction dynamics, the steel closely bound up with railway construction on the one hand can be directly driven, cement is built
The development of the industries such as material, promoting employment；The continuous development of another aspect railway, the especially development of high-speed rail, to by way of edge
The economic development of line each department, inviting outside investment also has positive meaning.It is reported that Chinese Railway development is extremely uneven, in
Railways in West China network seems very sparse, and traffic backwardness restricts the development of west lags far, this is also to cause and east, west area
One of an important factor for development gap constantly widens.Railway construction part persistently pulls and excites the lower Chinese and Western of current aggregate level
The consumption potentiality in portion area reinforces central and west regions production distribution, the circulation of exchange link, so that the employment of local resident
It increases to varying degrees with income, consumption is caused to continue to increase and the consumer goods is stimulated to produce.High-speed railway will be in future
All-round construction in time, high-speed rail EQUIPMENT MARKET GUIDE potentiality tool is big, especially connection be used for transmission signal data cable dosage it is bigger.
With the continuous renewal of high-speed rail equipment technology, the requirement to signal cable is also higher and higher, for example, northeast with
And the operation of Russian Far East extremely cold area, winter minimum temperature reach -55 DEG C, regular cable easily causes sheath to crack, low temperature
Destruction is generated to internal cable core, finally influences signal transmission performance.Conventional low medium physically foamed pe insulation data cable
When meeting high-temperature component, cable can generate biggish signal transmission attenuation phenomenon.Work as bullet train speed per hour simultaneously and reach 350km/h, such as
When short circuit occurs for internal data cable, Typical physical polyethylene foamed insulation data cable can generate combustion phenomena, seriously endanger
High-speed rail traffic safety.The invention patent product is innovated above material and production technology, is optimized in structure, this
Invention cable product has good fire protecting performance.
Summary of the invention
The purpose of the present invention is to solve existing in the prior art, digital signal cable transmission loss is big, production cost
Height, the disadvantage of fire protecting performance difference, and a kind of fire prevention numeral signal cables for railway and its manufacturing method proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of fire prevention numeral signal cables for railway and its manufacturing method, including intertwist body and signal wire pair are designed, it is described
Intertwist body includes insulated wire cores and channelizing line, and the channelizing line is stranded in insulated wire cores, and the insulated wire cores include inner conductor
And inner insulating layer, the inner insulating layer are wrapped on the outside of inner conductor, the shielded layer is coated on intertwist body surface, the shielded layer
One layer of external insulation layer is wrapped up in outside, and the signal wire is glued together to specially two external insulation layers, and the signal wire is to it
Between be interspersed with tensile layer, the signal wire is enclosed with inner refractory layer to outside, is suppressed on the outside of the inner refractory layer oxygen barrier
Layer, the oxygen barrier layer surface rolling have external refractory layer.
Preferably, the oxygen barrier layer formula are as follows: inorganic adhesive 45-78 parts, 28-60 parts of fire retardant, inorganic filler 18-
63 parts, mica powder 5%~13%, SiO 2 powder: 16.8%~17.8%, calcium carbonate 4%~5%, the material forms the
Two layers of refractory complete oxygen barrier layer structure, and flame retardant coating uses the light sheath material of ceramic polyene, form first layer refractory.
Preferably, the inner conductor is twisted using multiply tinned copper conductor.
Preferably, the insulating layer uses the bright alkene high-pressure physics nitrogen charging foaming structure of perfluoroethylene.
Preferably, the channelizing line uses strands tinned copper wire.
Preferably, the external insulation layer uses polyester belt in a manner of spiral winding in shielding layer surface.
Preferably, the oxygen barrier layer is completed with external refractory layer by double-layer coextrusion method, the double-layer coextrusion method
It is that one layer of flame retardant coating ceramic polyolefin jacket is extruded on its surface while squeezing out insolated layer materials by twin-screw head
Material.
Preferably, the tensile layer fills multiple object using heating is applied.
A kind of fire prevention numeral signal cables for railway proposed by the present invention and its manufacturing method, beneficial effect are: this is anti-
Fire type railway digital signal cable and its manufacturing method use physical blowing perfluoroethylene-propylene insulating layer on core structure,
Core average dielectric constant is reduced with this structure, meets signal and transmits low attenuation requirement, improve core transmission rate, reaching
Under the conditions of same transmission performance, reduces core outer diameter, largely save insulating materials, so that production cost is reduced, it is traditional
Bullet train data cable uses physically foamed pe insulation, and foam degrees 50% or so, save 81% by transmission rate
Material is 66%, and cable of the present invention uses perfluoroethylene-propylene physical foam insulation, and foaming reaches 70% or more, transmission rate
88% or so, saving material is 81%, its maximum attenuation value is tested in frequency 3MHz less than 20dB/km, 2MHz work electricity
Appearance≤4.6pF/m, dielectric strength AC, 15KV, 5min do not puncture.Insulation resistance >=5000M Ω .km, while surface of insulating layer squeezes
A strata perfluoroethylene-propylene (copolymer) exodermis is wrapped, keeps its line more stable to structure, characteristic impedance meets 120 ± 10 Ω, this hair in 3MHz
Bright patented product sheath uses ceramic polyene material, has a good mechanical performance, fire protecting performance, environmentally friendly against weather and
The features such as corrosion resistance, product are used for a long time when temperature range is -90 DEG C to 200 DEG C, and electric property, transmission performance is not
It changes, face uses wrapped object and the metal classes such as mica tape to traditional railway digital signal cable fireproof cable in design
The structures such as armor, complex procedures in production process, the invention patent product, with the main oxygen barrier layer material of fire prevention, are led to using novel
It crosses double-layer coextrusion formula hot extrusion molding process disposably to complete, three original processes is completed by a process, reduce cable
Production cost, cable jacket of the present invention use ceramic polyolefine material, which has fire prevention effect well, burning
Performance meets A grades of (non-ignitable cable) prescribed requirements in GB31247-2014 (cable and optical cable classification system for fire performance) standard.According to GB/
Method as defined in T14402-2007 " measurement of the combustibility combustion heat value of construction material and product " carries out combustion heat value examination
It tests, gross calorific value PCS≤2.0MJ/kg, according to GB/T31248-2014 " cable or optical cable propagation of flame, heat under the conditions of by fire
Release and the test method for producing cigarette characteristic " confirmation of testing, its propagation of flame height FS≤1.5 after twenty minutes of burning produce cigarette
Peak value≤0.25m2/s of density, 20 minutes sections of burning are interior to be generated without any drippage, and flue gas toxity rank reaches GB/
AQ2 grades specified in T20285-2206 (hazardous classification of tobacco-producing toxicity of materials) standard, its conductivity of corrosion test is 1.5 μ
S/mm (standard requirements are≤2.5 μ s/mm), and pH value is 5.8 (standard requirements are value >=4.3 PH), will not generate secondary harm
Property.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a kind of fire prevention numeral signal cables for railway proposed by the present invention and its manufacturing method.
In figure: inner conductor 1, inner insulating layer 2, shielded layer 3, external insulation layer 4, channelizing line 5, inner refractory layer 6, oxygen barrier layer 7,
External refractory layer 8, tensile layer 9.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1, a kind of fire prevention numeral signal cables for railway and its manufacturing method, including intertwist body and signal wire pair,
Intertwist body includes insulated wire cores and channelizing line 5, and channelizing line 5 is stranded in insulated wire cores, insulated wire cores include inner conductor 1 and it is interior absolutely
Edge layer 2, inner insulating layer 2 are wrapped in 1 outside of inner conductor, and shielded layer 3 is coated on intertwist body surface, wraps up one layer on the outside of shielded layer 3
External insulation layer 4, signal wire are glued together to specially two external insulation layers 4, and tensile layer 9 is interspersed between signal wire pair, letter
Number line is enclosed with inner refractory layer 6 to outside, and oxygen barrier layer 7 is suppressed on the outside of inner refractory layer 6, and 7 surface rolling of oxygen barrier layer has outer
Portion's flame retardant coating 8.Inner conductor 1 is formed using multiply tinned copper wire process, and inner insulating layer 2 is extruded using perfluoroethylene-propylene and led in interior
1 surface of body, by using " skin foam skin " physical foaming technology, for foam degrees up to 70% or more, the insulating materials dielectric constant is small
And stablize, have resistant of high or low temperature requirement, the insulated wire cores of different colours are twisted with channelizing line 5 by certain twisting pitch
System, shielded layer 3 are coated on insulated wire cores and channelizing line intertwist body surface using two-sided conductive aluminum foil with wrapped 360 degree of form,
External insulation layer 4 is coated on 3 surfaces of shielding using 360 degree of polyester belt and forms external insulation layer 4, and 4 structure of external insulation layer completes signal wire
It is right, inner refractory layer 6, oxygen barrier layer 7, tensile layer 9 are equipped between signal wire pair and external refractory layer 8.Inner refractory layer 6 uses pottery
Porcelain polyene material is extruded in signal wire to table, forms third layer refractory, completes inner refractory layer structure.
Oxygen barrier layer 7 has high fire-retardance effect it acts as when meeting high-temp combustion using new material, is formulated are as follows: nothing
45-78 parts of machine adhesive, 28-60 parts of fire retardant, 18-63 parts of inorganic filler, mica powder 5%~13%, SiO 2 powder:
16.8%~17.8%, calcium carbonate 4%~5%, the material forms second layer refractory, completes 7 structure of oxygen barrier layer, external refractory
Layer 8 uses the light sheath material of ceramic polyene, forms first layer refractory, completes external refractory layer structure, and the material is bright in chance
Surface discharges rapidly water vapour when fire burning, while material solidification shape armouring body, fire-retardant flame are further stretched, and protects in cable
Portion's structure, oxygen barrier layer 7 are completed with external refractory layer 8 by the method for " double-layer coextrusion ", and the double-layer coextrusion method is to pass through
Twin-screw head extrudes one layer of flame retardant coating ceramic polyolefin jacket material on its surface while squeezing out insolated layer materials.
It synchronizes and first extrudes 7 material of oxygen barrier layer and 8 material of external refractory layer, the method reduces production cost, and tensile layer 9 uses heating
It is applied to fill multiple object, have very high tensile strength.
The present invention uses tinned copper conductor, and the insulation of physical blowing perfluoroethylene-propylene is used as signal transmission medium body, is situated between
Electric constant is 1.6, and high frequency signal transmission decaying is small, while extruding one layer of perfluoroethylene third in perfluoroethylene-propylene foaming layer surface
Alkene protective layer prevents moisture invasion foaming edge edge layer, it is ensured that signal transmission performance is more reliable.In addition each line adopts sub-shield 3
With independent grounding structure, i.e., each signal wire insulate further around packet polyester belt to wrapped aluminium foil is carried out after adding ground wire, is comprehensive
Meet cable fire, cable core intertwist body surface extrudes one layer of ceramic polyene flame retardant coating as third layer body fire resisting, signal electricity
Cable be equipped with second layer refractory structure, embodied by oxygen barrier layer 7, cable jacket flame retardant coating use ceramic polyolefin as
First layer refractory, first, two layers of fire resisting are completed by double-layer coextrusion formula method, reduce production process, are reduced cable and are produced into
This.
1 surface of inner conductor extrudes one layer of 0.05mm perfluoroethylene-propylene endodermis, and it is complete to extrude a strata in endothelial surface
Fluoro ethyl propene physical blowing layer forms insulating layer, and foaming layer surface extrudes one layer of 0.1mm perfluoroethylene-propylene exodermis.
Above structure is complete by three-layer co-extruded formula nitrogen charging physical blowing production line.3 structure of shielded layer is by two insulated wires
Core and ground line, aluminium foil, protective layer carry out process by a constant pitch and form, the conductive inward-facing ground line contact of aluminium foil.Channelizing line
It is to be formed by multiply tinned copper wire process, this form is beneficial to prevent between signal wire pair and interferes with each other.Flame retardant coating uses ceramics
Change polyene material, oxygen barrier layer 7 uses new material, and formula has originality, and flame retardant coating is extruded in 7 surface of oxygen barrier layer, by double
Layer co-extrusion method is completed, and materials'use ceramic polyolefin, the material do not absorb water, is nonhygroscopic, and dielectric strength under room temperature >=
22KV/mm, volume resistivity >=2 × 1014 Ω cm, hard armour body section can generate uniform micropore after ablation, pottery
The dielectric strength of hard armour body is greater than 24KV/mm after porcelain, and volume resistivity is greater than 2 × 1015 Ω cm, oxygen index (OI) highest
It can reach 45 or more, it is not only fire-retardant, low cigarette, Halogen, harmless, do not prolong combustion, do not drip, do not fall, can equally be formed after ablation
Adamantine ceramic armouring shell, plays a protective role to cable internal structure, and tensile layer 9 uses the applied filling of heating
Multiple object, has very high tensile strength.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of fire prevention numeral signal cables for railway and its manufacturing method, including intertwist body and signal wire pair, it is characterised in that:
The intertwist body includes insulated wire cores and channelizing line (5), and the channelizing line (5) is stranded in insulated wire cores, the insulated wire cores
Including inner conductor (1) and inner insulating layer (2), the inner insulating layer (2) is wrapped on the outside of inner conductor (1), shielded layer (3) packet
Intertwist body surface is overlayed on, one layer of external insulation layer (4) is wrapped up on the outside of the shielded layer (3), the signal wire is outer to specially two
Insulating layer (4) is glued together, is interspersed between the signal wire pair tensile layer (9), and the signal wire is enclosed with outside interior
Portion's flame retardant coating (6), inner refractory layer (6) outside are suppressed with oxygen barrier layer (7), and oxygen barrier layer (7) surface rolling has outside
Flame retardant coating (8).
2. a kind of fire prevention numeral signal cables for railway according to claim 1 and its manufacturing method, which is characterized in that institute
State oxygen barrier layer (7) formula are as follows: inorganic adhesive 45-78 parts, 28-60 parts of fire retardant, 18-63 parts of inorganic filler, mica powder 5%~
13%, SiO 2 powder: 16.8%~17.8%, calcium carbonate 4%~5%, the material formed second layer refractory, complete every
Oxygen layer (7) structure, the flame retardant coating (8) use the light sheath material of ceramic polyene, form first layer refractory.
3. a kind of fire prevention numeral signal cables for railway according to claim 1 and its manufacturing method, which is characterized in that institute
Inner conductor (1) is stated to be twisted using multiply tinned copper conductor.
4. a kind of fire prevention numeral signal cables for railway according to claim 1 and its manufacturing method, which is characterized in that institute
It states insulating layer (2) and uses the bright alkene high-pressure physics nitrogen charging foaming structure of perfluoroethylene.
5. a kind of fire prevention numeral signal cables for railway according to claim 1 and its manufacturing method, which is characterized in that institute
Channelizing line (5) are stated using strands tinned copper wire.
6. a kind of fire prevention numeral signal cables for railway according to claim 1 and its manufacturing method, which is characterized in that institute
Stating external insulation layer (4) uses polyester belt in a manner of spiral winding in shielded layer (3) surface.
7. a kind of fire prevention numeral signal cables for railway according to claim 1 and its manufacturing method, which is characterized in that institute
It states oxygen barrier layer (7) and is completed with external refractory layer (8) by double-layer coextrusion method, the double-layer coextrusion method is to pass through twin-screw
Head extrudes one layer of flame retardant coating ceramic polyolefin jacket material on its surface while squeezing out insolated layer materials.
8. a kind of fire prevention numeral signal cables for railway according to claim 1 and its manufacturing method, which is characterized in that institute
It states tensile layer (9) and fills multiple object using heating is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910333739.7A CN110033882A (en) | 2019-04-24 | 2019-04-24 | A kind of fire prevention numeral signal cables for railway and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910333739.7A CN110033882A (en) | 2019-04-24 | 2019-04-24 | A kind of fire prevention numeral signal cables for railway and its manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927846A (en) * | 2021-01-20 | 2021-06-08 | 东莞市正伟电线电缆有限公司 | High-temperature fireproof cable |
| US11956865B2 (en) | 2017-02-01 | 2024-04-09 | Nvent Services Gmbh | Low smoke, zero halogen self-regulating heating cable |
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| CN108218320A (en) * | 2018-01-31 | 2018-06-29 | 上海腾瑞纳化工科技有限公司 | A kind of flexible mineral insulation cable mineral oxygen barrier feed composition and preparation method thereof |
| CN208111161U (en) * | 2018-04-19 | 2018-11-16 | 浙江元通线缆制造有限公司 | A kind of LSOH anti-flaming B1 grades of communication cables |
| CN209993356U (en) * | 2019-04-24 | 2020-01-24 | 湖北宇洪光电实业有限公司 | Fireproof railway digital communication cable |
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| CN103345964A (en) * | 2013-07-01 | 2013-10-09 | 安徽虹都电缆集团有限公司 | Industrial heat-resisting fireproofing instrument cable and manufacturing technology thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11956865B2 (en) | 2017-02-01 | 2024-04-09 | Nvent Services Gmbh | Low smoke, zero halogen self-regulating heating cable |
| CN112927846A (en) * | 2021-01-20 | 2021-06-08 | 东莞市正伟电线电缆有限公司 | High-temperature fireproof cable |
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