CN214897766U - B1-grade flame-retardant environment-friendly shielding type computer cable - Google Patents
B1-grade flame-retardant environment-friendly shielding type computer cable Download PDFInfo
- Publication number
- CN214897766U CN214897766U CN202120697335.9U CN202120697335U CN214897766U CN 214897766 U CN214897766 U CN 214897766U CN 202120697335 U CN202120697335 U CN 202120697335U CN 214897766 U CN214897766 U CN 214897766U
- Authority
- CN
- China
- Prior art keywords
- retardant
- fire
- package
- shielding
- flame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a fire-retardant environment-friendly shielding type computer cable of B1 level, the structure and the material of overcoming traditional shielding type computer cable among the prior art can not reach the problem of the fire-retardant requirement of B1 level, including a plurality of conductors, the crowded package insulating layer constitutes a set of insulation core outside the conductor, insulation core pair twist constitutes the pair twist around the package polyester tape around the package sinle silk, the pair twist is around the package sinle silk outer crowded package or weave the branch shielding layer, constitutes the branch shielding unit, a plurality of branch shielding unit stranding are around the fire-retardant band of package, space department still is equipped with the filling rope in the fire-retardant band, the fire-retardant crowded package of band outer separates the oxygen layer, the crowded package of crowded package B1 level low smoke and zero halogen fire-retardant polyolefin of oxygen layer protect the material, separate the crowded package fire-retardant oversheath of fire-retardant B1 level low smoke and zero halogen fire-retardant polyolefin sheath material of fire-retardant oversheath. The common shielding type cable is improved from the structure and the material, the using requirement of the conventional separately shielding computer cable is met, the flame retardant cable has excellent combustion performance, and the flame retardant grade can reach B1 grade.
Description
Technical Field
The utility model relates to a computer cable technical field, in particular to fire-retardant environment-friendly shielding type computer cable of B1 level.
Background
According to the requirements of the latest version DGJ 08-2048-2016 civil building electrical fire protection design rule and GB 50016-2018-building design fire protection specification: the use of B1 cable is required in super high rise buildings and a class of high rise buildings in civil buildings. Meanwhile, B1 cables are widely used in high-rise buildings, shopping malls, schools, subway stations, airports, stadiums, exhibition halls, hospitals and other densely populated public places. Recent rail transit projects also require products to meet the B1 level requirement. B1 wire and cable will be widely used: high-rise buildings, shopping malls, schools, subway stations, airports, stadiums, exhibition halls, hospitals and other densely populated public places add a safety to the daily life of people.
But the structure and material of the common shielding type computer cable can not meet the flame retardant requirement of B1 level. For example, the utility model is disclosed in 18.12.12.2020 of the chinese patent office as an impact-resistant and anti-interference type mining computer cable, whose publication number is CN 212182019U. The utility model discloses an including multiunit conductor insulation layer, the inside multiunit conductor that is provided with of conductor insulation layer, it is provided with filler one, multiunit to fill between conductor insulation layer and the conductor insulation layer outside all cup joints and is provided with conductor shield, it is provided with filler two, multiunit to fill between conductor shield and the conductor insulation layer conductor shield periphery all cup joints and is provided with outer shielding layer, it is provided with filler three to fill between conductor shield and the outer shielding layer, outer shielding layer outside cup joints and is provided with the flame retardant coating, the flame retardant coating periphery is provided with the heat dissipation support, heat dissipation support periphery is provided with the oversheath, and this computer cable has anti-interference performance that shocks resistance, has good heat dispersion simultaneously. Although the fireproof layer and the anti-interference support are arranged, the flame retardant material of B1 level is not adopted, and the flame retardant requirement of B1 level cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that traditional shielded computer cable's structure and material can not reach B1 level fire-retardant requirement among the prior art, a B1 level fire-retardant environment-friendly shielded computer cable is provided, this cable improves ordinary shielded cable from structure and material, the conventional shielding computer cable user demand that divides has been satisfied, the electrical fire prevention design specification of building has been satisfied simultaneously, excellent combustion performance has, fire-retardant grade can reach B1 level.
In order to achieve the above purpose, the utility model adopts the following technical scheme: including a plurality of conductors, the crowded package insulating layer constitutes a set of insulation core outside the conductor, and insulation core pair twist is around package polyester area constitution pair twist around the package sinle silk, and the pair twist is around package sinle silk outer crowded package or weave branch shielding layer, constitutes and divides shielding unit, and a plurality of branch shielding unit stranding are around the fire-retardant band of package, and space department still is equipped with the filling rope in the fire-retardant band, and the crowded package of fire-retardant band separates the oxygen layer, separate crowded package B1 level low smoke and zero halogen fire-retardant polyolefin of oxygen layer and protect the material, separate the crowded package fire-retardant oversheath of oxygen layer outer crowded package, the crowded package B1 level low smoke and zero halogen fire-retardant polyolefin sheath material of fire-retardant oversheath.
The B1-grade cable is characterized in that under the test standard of GB 31248-2The total smoke production TSP1200 in the fire 1200S is less than or equal to 50m2GB/T17651.2 test standard: the minimum light transmittance is more than or equal to 70 percent, and the vertical flame spread H under the GB/T18380.12 test standard is less than or equal to 425 mm. The conductor is preferably a copper conductor, and the computer cable comprises an insulating layer, a sub-shielding layer, a flame-retardant wrapping tape, an oxygen isolation layer and a flame-retardant outer sheath, so that the use requirement of the conventional sub-shielding computer cable is met. Meanwhile, the oxygen barrier layer adopts a material with the main component of low-smoke halogen-free oxygen barrier layer, a large amount of inorganic hydrated metal oxides (magnesium hydroxide, aluminum hydroxide and the like) are added into the material, and when the material is heated, the material can decompose out bound water, so that the cable is cooled, the heat is effectively blocked, and the material reacts to form a hard shell. Both can prevent that flame from to the inner structure damage of cable core, guarantee the integrality of stranding cable core, also can reduce the inside combustible gas's of stranding cable core volatilization simultaneously, reduce corresponding combustion temperature from this, improve fire-retardant ability.
Preferably, the pair-twisted wrapped wire core comprises two groups of insulated wire cores, and the two groups of insulated wire cores are symmetrically distributed in the shielding layer structure. Divide the shielding layer to be circular structure, two sets of insulation core are the symmetric distribution on circular sharp, and sinle silk edge is tangent with the circular of branch shielding layer structure department, and there is the filler space department, guarantees not have the air, guarantees to twist around the roundness of package sinle silk, improves the fire behaviour of sinle silk. When the protective wire and the neutral wire share the same conductor, the cable is suitable for cables with two groups of insulated wire cores.
Preferably, the pair-twisted wrapped wire core comprises three groups of insulated wire cores, and the three groups of insulated wire cores are distributed in the shielding layer structure in a triangular symmetrical mode. Divide the shielding layer to be circular structure, three insulating sinle silks of group are triangle symmetric distribution in dividing shielding layer structure, and sinle silk edge is tangent with the circular of dividing shielding layer structure department, and there is the filler space department, guarantees not have the air, guarantees to twist around the roundness of package sinle silk, improves the fire behaviour who hinders of sinle silk. When the protective line and the neutral line are independent, the cable with three groups of insulated wire cores is suitable.
Preferably, the fire-retardant plastic bag comprises two-component shielding units which are symmetrically distributed in a fire-retardant bag belt structure. The structure of the flame-retardant wrapping tape is circular, the two groups of shielding units are symmetrically distributed on a circular straight line, and the edges of the shielding units are tangent to the circle where the structure of the flame-retardant wrapping tape is located, so that the roundness of the flame-retardant wrapping tape is ensured.
Preferably, the two groups of filling ropes are symmetrically distributed in the flame-retardant wrapping tape structure. The straight line where the two groups of filling ropes are located is perpendicular to the straight line where the two groups of pair-twisted wrapping wire cores are located. The filling rope is used for controlling the cabling pitch, so that the roundness of the cable after cabling is ensured, no air flow channel is ensured, and the flame retardant capability is improved.
Preferably, the insulating layer is a polyolefin insulating layer, and the sub-shielding layer is a metal sub-shielding layer. The polyolefin insulating layer is preferably a polyethylene insulating layer, and polyethylene is plastic with the best electrical insulating property, has good heat resistance, strong load capacity, no melting, chemical corrosion resistance and high mechanical strength. The metal shielding layer mainly shields electromagnetism, makes inside sinle silk not receive outside electromagnetic interference, and inside electromagnetic energy does not run outside easily simultaneously. The metal shielding layer is preferably a copper wire braid or a copper tape lapping, and the lapping copper tape has excellent lightning protection property.
Preferably, the flame-retardant wrapping tape is a two-layer low-smoke halogen-free flame-retardant tape. The low smoke and zero halogen means that the material is a halogen substance, does not release halogen-containing gas under the condition of combustion, has low smoke concentration, long service life and high temperature resistance, and can enable the cable to achieve the flame retardant effect through an irradiation crosslinking process.
Preferably, the flame retardant is added into the flame-retardant outer sheath in a proportion of 65-70%. When the flame-retardant outer sheath is selected, the halogen-free low-smoke flame-retardant polyolefin sheath material with the oxygen index of 37, the smoke density of 70-80, the crusting property and other parameters reaching the standard is preferably adopted, and 65% -70% of flame retardant is added into the halogen-free low-smoke flame-retardant polyolefin sheath material. Meanwhile, the extrusion surface is smooth and round during extrusion, the extrusion surface is tightly extruded on the cable core, the section of the cable core has no visible air holes with normal vision, no obvious combustion drips are generated during flame combustion, and the flame retardant effect is improved. Meanwhile, the material releases no halogen acid gas during combustion, has extremely low smoke generation amount, excellent crusting performance, low possibility of falling, protection of an internal insulating layer, low possibility of ignition, low heat release rate and total heat release amount, and is a safe and environment-friendly flame-retardant polyolefin material meeting ROSH and REACH standards.
Therefore, the utility model discloses following beneficial effect has: 1. the whole design of the B1-grade flame-retardant environment-friendly shielding type computer cable not only meets the use requirements of the conventional separately-shielded computer cable, but also can meet the electrical fireproof design specifications of buildings, has excellent combustion performance, and has the flame retardant grade reaching B1 grade; 2. the halogen-free and non-toxic material is not contained in high temperature or combustion, and the combustion smoke is non-toxic and non-corrosive, does not corrode precision equipment or pollute the atmospheric environment, and meets the requirements of important places with centralized personnel and high safety requirements.
Drawings
Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention;
fig. 2 is another schematic structural diagram provided in the embodiment of the present invention;
in the figure: 1. a conductor; 2. an insulating layer; 3. filling a rope; 4. dividing a shielding layer; 5. flame-retardant wrapping tape; 6. an oxygen barrier layer; 7. a flame-retardant outer sheath.
Detailed Description
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
the embodiment is a structural schematic of a B1-grade flame-retardant environment-friendly shielding type computer cable, and as shown in fig. 1, the cable mainly comprises a conductor, an insulating layer, a filling rope, a sub-shielding layer, a flame-retardant wrapping tape, an oxygen-barrier layer and a flame-retardant outer sheath. The conductor is a copper conductor, an insulating layer is extruded outside the copper conductor to form an insulating wire core, and the insulating layer is made of polyethylene insulating materials. Two sets of insulated wire cores are twisted in pairs to form twisted wire cores, and the twisted wire cores are wrapped with copper strips to form separate shielding layers, so that separate shielding units are formed. Two sets of insulation core are the symmetric distribution in dividing the shielding layer structure, and sinle silk edge is tangent with the circular of dividing shielding layer structure department, and there is the filler space department, guarantees not have the air, guarantees to twist around the roundness of package sinle silk, improves the fire-retardant ability of sinle silk. Two groups of shielding units are cabled and wrapped by two layers of low-smoke halogen-free flame-retardant wrapping tapes, the two groups of shielding units are symmetrically distributed in the flame-retardant wrapping tape structure, and the edges of the shielding units are tangent to the circle where the flame-retardant wrapping tape structure is located. The gap in the flame-retardant wrapping tape also comprises two groups of filling ropes, the two groups of filling ropes are symmetrically distributed in the flame-retardant wrapping tape structure, and the edges of the filling ropes are tangent to the circle where the flame-retardant wrapping tape structure is located. The straight line where the two groups of shielding units are located is perpendicular to the straight line where the two groups of filling ropes are located, so that the roundness of the cable after cabling is guaranteed, no air flow channel is guaranteed, and the flame retardant capability is improved. The flame-retardant wrapping tape is externally extruded with a B1-grade low-smoke halogen-free flame-retardant polyolefin sheath material, and the oxygen-isolating layer is externally extruded with a B1-grade low-smoke halogen-free flame-retardant polyolefin sheath material. The low smoke and zero halogen means that the material is halogen substance, does not release halogen-containing gas under the condition of combustion, has low smoke concentration, long service life, high temperature resistance and good environmental protection effect.
The embodiment is another structural schematic of a B1-grade flame-retardant environment-friendly shielding type computer cable, and as shown in fig. 2, the cable mainly comprises a conductor, an insulating layer, a filling rope, a sub-shielding layer, a flame-retardant wrapping tape, an oxygen-barrier layer and a flame-retardant outer sheath. The conductor is a copper conductor, an insulating layer is extruded outside the copper conductor to form an insulating wire core, and the insulating layer is made of polyethylene insulating materials. Three insulating sinle silk pair twist are lapped around package polyester area, constitute pair twist and are lapped the sinle silk, and pair twist is lapped the sinle silk copper wire and is woven branch shielding layer, constitutes branch shielding unit. Three insulation core of group are triangle symmetric distribution in dividing the shielding layer structure, and the sinle silk edge is tangent with the circular of dividing shielding layer structure department, and there is the filler space department, guarantees not have the air, guarantees to twist around the roundness of package sinle silk, improves the fire-retardant ability of sinle silk. Two groups of shielding units are cabled and wrapped by two layers of low-smoke halogen-free flame-retardant wrapping tapes, the two groups of shielding units are symmetrically distributed in the flame-retardant wrapping tape structure, and the edges of the shielding units are tangent to the circle where the flame-retardant wrapping tape structure is located. The gap in the flame-retardant wrapping tape also comprises two groups of filling ropes, the two groups of filling ropes are symmetrically distributed in the flame-retardant wrapping tape structure, and the edges of the filling ropes are tangent to the circle where the flame-retardant wrapping tape structure is located. The straight line where the two groups of shielding units are located is perpendicular to the straight line where the two groups of filling ropes are located, so that the roundness of the cable after cabling is guaranteed, no air flow channel is guaranteed, and the flame retardant capability is improved. The flame-retardant wrapping tape is externally extruded with an oxygen-isolating layer, and the oxygen-isolating layer is externally extruded with a B1-grade low-smoke halogen-free flame-retardant polyolefin sheath material. The oxygen-isolating layer adopts a material with the main component of low-smoke halogen-free oxygen-isolating layer, a large amount of inorganic hydrated metal oxides (magnesium hydroxide, aluminum hydroxide and the like) are added into the material, and when the material is heated, the material can decompose bound water, so that the cable is cooled, heat is effectively isolated, and the material reacts to form a hard shell. Both can prevent that flame from to the inner structure damage of cable core, guarantee the integrality of stranding cable core, also can reduce the inside combustible gas's of stranding cable core volatilization simultaneously, reduce corresponding combustion temperature from this, improve fire-retardant ability.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (8)
1. The utility model provides a fire-retardant environment-friendly shielding type computer cable of B1 level, a serial communication port, including a plurality of conductors (1), conductor (1) crowded package insulating layer (2) constitutes a set of insulation core, insulation core pair twist is around package polyester area constitution pair twist around the package sinle silk, pair twist is around package sinle silk outer crowded package or weave branch shielding layer (4), constitutes the branch shielding unit, a plurality of branch shielding unit finished cables are around package fire-retardant band (5), fire-retardant band (5) inner space department still is equipped with filling rope (3), fire-retardant band (5) crowded package outward separates oxygen layer (6), separate oxygen layer (6) crowded package B1 level low smoke and zero halogen fire-retardant polyolefin and protect material, separate oxygen layer (6) crowded package fire-retardant oversheath (7), fire-retardant oversheath (7) crowded package B1 level low smoke and fire-retardant polyolefin sheath material.
2. The shielded cable according to claim 1, wherein the twisted pair wrapped core comprises two groups of insulated cores, and the two groups of insulated cores are symmetrically distributed in the shielding layer (4).
3. The shielded cable according to claim 1, wherein the twisted pair wrapped core comprises three groups of insulated cores, and the three groups of insulated cores are distributed in the partial shielding layer (4) structure in a triangular symmetry manner.
4. The shielded computer cable of claim 1, wherein the cable comprises two shielding units symmetrically disposed in the fire-retardant wrapping tape (5).
5. The shielded cable according to claim 1, wherein the two groups of the filling ropes (3) are symmetrically distributed in the fire-retardant wrapping tape (5).
6. The shielded computer cable as claimed in claim 1, wherein the insulation layer (2) is polyolefin insulation layer, and the partial shielding layer (4) is metallic partial shielding layer.
7. The B1-grade flame-retardant environment-friendly shielding type computer cable according to claim 1, wherein the flame-retardant wrapping tape (5) is a two-layer low-smoke halogen-free flame-retardant tape.
8. The B1-grade flame-retardant environment-friendly shielding type computer cable as claimed in claim 1, wherein the flame-retardant outer sheath (7) is added with 65% -70% of flame retardant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120697335.9U CN214897766U (en) | 2021-04-07 | 2021-04-07 | B1-grade flame-retardant environment-friendly shielding type computer cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120697335.9U CN214897766U (en) | 2021-04-07 | 2021-04-07 | B1-grade flame-retardant environment-friendly shielding type computer cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214897766U true CN214897766U (en) | 2021-11-26 |
Family
ID=78949209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120697335.9U Active CN214897766U (en) | 2021-04-07 | 2021-04-07 | B1-grade flame-retardant environment-friendly shielding type computer cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214897766U (en) |
-
2021
- 2021-04-07 CN CN202120697335.9U patent/CN214897766U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203026256U (en) | Communication cable for halogen-free low-smoke flame-retardant fire-proof ship | |
| CN105741966A (en) | Metal sheath bureau communication cable for rail transit | |
| CN209374085U (en) | CM grades of fire-retarded fiber communication lines | |
| CN104810094A (en) | Crosslinked polyethylene insulating and refractory armored cable with rated voltage of 10 KV and manufacturing method thereof | |
| CN104795163A (en) | Ethylene propylene rubber insulated fireproof armored cable with nominal voltage of 10KV and production method of ethylene propylene rubber insulated fireproof armored cable | |
| CN214897766U (en) | B1-grade flame-retardant environment-friendly shielding type computer cable | |
| CN204926852U (en) | Fire -retardant AC electric cable | |
| CN208861718U (en) | B1 grades of environmentally protective medium-pressure power cables of multistoried building | |
| CN218513193U (en) | Long-life flame-retardant B1-grade halogen-free low-smoke low-voltage power cable | |
| CN208077662U (en) | A kind of extruded insulation fireproof power cable | |
| CN214410851U (en) | Flame-retardant cable | |
| CN211555554U (en) | Light flexible medium-voltage fireproof cable | |
| CN213958659U (en) | Multifunctional reinforced overhead insulated cable | |
| CN210295943U (en) | Cable insulation flame-retardant system | |
| CN210156130U (en) | Irradiation crosslinking halogen-free low-smoke flame-retardant high-performance cable | |
| CN208538511U (en) | A kind of fireproof cable | |
| CN202662321U (en) | Fireproof insulation cable | |
| CN201893161U (en) | Soft type low smoke zero halogen cable for ship | |
| CN203746538U (en) | Low-smoke halogen-free flame-retardant fireproof electronic computer cable | |
| CN205451888U (en) | Flame -retardant power cable | |
| CN218525342U (en) | High-flame-retardance no-dripping-object low-smoke-density environment-friendly non-shielded digital communication cable | |
| CN212209001U (en) | Stepped water-releasing cooling type B1-grade medium-voltage aluminum alloy fireproof cable | |
| CN205353423U (en) | Mining fire -retardant combined optical fiber cable of standard | |
| CN215988179U (en) | High flame retardant data cable | |
| CN204423946U (en) | Resistant environmental low-smoke halogen-free flame oil-resistant flexible cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |