CN208240374U - A kind of environmental-protection flame-retardant shielding control cable - Google Patents
A kind of environmental-protection flame-retardant shielding control cable Download PDFInfo
- Publication number
- CN208240374U CN208240374U CN201820798474.9U CN201820798474U CN208240374U CN 208240374 U CN208240374 U CN 208240374U CN 201820798474 U CN201820798474 U CN 201820798474U CN 208240374 U CN208240374 U CN 208240374U
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- Prior art keywords
- layer
- retardant
- cable
- outside
- flame
- Prior art date
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 39
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000000779 smoke Substances 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 8
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 7
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 7
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 6
- 239000008397 galvanized steel Substances 0.000 claims abstract description 6
- 229920000098 polyolefin Polymers 0.000 claims abstract description 6
- 238000009941 weaving Methods 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000012774 insulation material Substances 0.000 abstract description 3
- 235000019504 cigarettes Nutrition 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 231100000053 low toxicity Toxicity 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a kind of environmental-protection flame-retardants to shield control cable, and the insulated wire cores of cable center are placed in including more, and a plurality of insulated core is twisted into round cable core together with packing material, band, inner sheath, armor and oversheath are followed successively by outside cable core；The insulated wire cores include conductor and the insulating layer that is coated on outside conductor, which uses crosslinked polyethylene insulation material；The band is using high fire-retardance glass cloth tape and outside cable core；Shielded layer is also set up between the band and inner sheath, which is formed by proof copper-wire braided and unite packet outside band；The armor is by the double-deck galvanized steel strip gap outside inner sheath；The oversheath uses halogen-free and low-smoke flame-retardant polyolefin material.The environmental-protection flame-retardant shielding control cable of the utility model, has the excellent properties such as fire-retardant, low cigarette, low toxicity, moisture-proof, anti-corrosion and antisitic defect.
Description
Technical Field
The utility model relates to a fire-retardant shielding control cable of environment-friendly for 450/750V reaches the connecting wire and the transmission of automatic control system of following electrical apparatus instrument.
Background
The power cable is used for transmitting and distributing high-power electric energy in a main line of a power system, the control cable directly transmits the electric energy to power supply connecting lines of various electric equipment from a power distribution point of the power system, and the power cable is suitable for energy traffic departments, high-rise and super high-rise buildings, large entertainment venues and other places with dense personnel, post and telecommunications systems, large industrial and mining enterprises, underground engineering and the like. From the fire data counted by the fire department, more than two thirds of urban fires are caused by the spread of cable combustion caused by the failure of electrical equipment or overload of cable load. The traditional control cable insulation material is mostly made of polyvinyl chloride, although the flame retardant property of the traditional control cable insulation material is good, a large amount of smoke, hydrogen chloride and other harmful gases are generated in the combustion process of the material, so the life safety of people is seriously threatened, a cable fire disaster can generate a large amount of smoke dust and toxic gases which are irritating and anaesthetizing to human bodies, and the smoke dust and the toxic gases can reduce the visibility of a fire scene, influence personnel to escape from the fire scene, and cause the indoor rest, poisoning and even death of the personnel. Therefore, the development of an environment-friendly flame-retardant shielding control cable is needed both from the perspective of fire safety and from the perspective of environmental protection.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect and provide a fire-retardant shielding control cable of environment-friendly, it has excellent properties such as fire-retardant, low cigarette, low toxicity, dampproofing, anticorrosive and damage prevention.
The purpose of the utility model is realized like this: an environment-friendly flame-retardant shielding control cable comprises a plurality of insulating wire cores arranged in the center of the cable, wherein the plurality of insulating wire cores and a filling material are twisted together to form a round cable core, and a wrapping tape, an inner sheath, an armor layer and an outer sheath are sequentially arranged outside the cable core; wherein,
each insulated wire core comprises a single solid conductor and an insulated layer extruded outside the conductor, the thickness of the insulated layer is 0.6-0.7 mm, and the insulated layer is made of a crosslinked polyethylene insulated material;
the wrapping belt is made of a high-flame-retardant glass cloth belt with the thickness of 0.17mm and wrapped outside the cable core according to the overlapping rate of 15-20%;
a shielding layer is arranged between the wrapping tape and the inner sheath, the shielding layer is formed by bidirectional cross-weaving of soft copper wires according to a set weaving density, and the shielding layer is wrapped outside the wrapping tape;
the armor layer is wrapped outside the inner sheath in a clearance mode by adopting a double-layer galvanized steel strip according to a set clearance rate;
the outer sheath is made of halogen-free low-smoke flame-retardant polyolefin material and is extruded outside the armor layer.
In the environment-friendly flame-retardant shielding control cable, the diameter of the soft copper wire is 0.2 mm; the weaving density is greater than 80%.
In the environment-friendly flame-retardant shielding control cable, the thickness of each layer of galvanized steel strip is 0.2-0.5 mm, and the gap rate is 45-50%.
The utility model discloses a fire-retardant shielding control cable of environment-friendly has following characteristics:
1. the insulating layer is made of cross-linked polyethylene insulating materials, so that toxic gas is not generated during combustion, the high-flame-retardant glass cloth belt is externally used as a wrapping belt for wrapping the cabled cable core, and the outer sheath is made of halogen-free low-smoke flame-retardant polyolefin materials, so that the whole cable can achieve the flame-retardant effect, the combustion speed of the cable is reduced, and the fire is prevented from further spreading;
2. the shielding layer is braided by using the wrapped copper wires, and the shielding structure can shield an electric field in the cable core, eliminate the interference to the outside and bear part of mechanical force. In addition, a steel tape armor layer is added between the inner sheath and the outer sheath to play a role in radial reinforcement, so that the cable is prevented from being affected by external mechanical damage to work.
Drawings
Fig. 1 is a cross-sectional view of the environment-friendly flame-retardant shielding control cable of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, the environment-friendly flame-retardant shielding control cable of the present invention includes a plurality of insulation cores disposed in the center of the cable, the plurality of insulation cores and the filling material 3 are twisted into a circular cable core, and a belt 4, a shielding layer 5, an inner sheath 6, an armor layer 7 and an outer sheath 8 are sequentially disposed outside the cable core; wherein,
each insulated wire core comprises a single solid conductor 1 and an insulated layer 2 extruded outside the conductor 1, wherein the thickness of the insulated layer 2 is 0.6-0.7 mm, and the insulated layer is made of a cross-linked polyethylene insulated material;
the wrapping belt 4 is made of a high-flame-retardant glass cloth belt with the thickness of 0.17mm and wrapped outside the cable core according to the overlapping rate of 15-20%;
the shielding layer 5 is formed by bidirectionally and alternately weaving soft copper wires with the diameter of 0.2mm according to the weaving density of more than 80 percent, and the shielding layer 5 is totally wrapped outside the wrapping tape 4;
the armor layer 7 is formed by wrapping a galvanized steel strip with a double-layer thickness of 0.2-0.5 mm outside the inner sheath 6 in a clearance mode with a clearance rate of 45-50%;
the outer sheath 8 is made of halogen-free low-smoke flame-retardant polyolefin material and is extruded outside the armor layer 7.
The utility model discloses a fire-retardant shielding control cable of environment-friendly has following characteristics:
1. design of environment-friendly flame-retardant structure
The utility model discloses a crosslinked polyethylene insulating material is selected for use to the insulating layer, but crosslinked polyethylene insulating material does not have fire behaviour, so must adjust structural design to make whole root cable can reach fire-retardant effect. In order to reduce the burning speed of the cable and prevent the fire from further spreading, the high-flame-retardant glass cloth tape is externally used as a wrapping tape for wrapping the cabled cable core. The high flame-retardant glass cloth belt can be decomposed into metal oxide and crystal water can be separated out after encountering fire. The metal oxide forms a net structure after decomposition, and has a certain adsorption effect on the smoke. The separated crystal water not only has obvious sedimentation effect on the smoke particles, but also has better heat absorption effect. In addition, a carbonized structure can be formed in the combustion process, the carbonized structure plays a great role in low smoke and flame retardance of the cable, the heat absorption effect can delay the combustion speed and the sharp rising time when the cable starts to combust, and the supply of oxygen and the flow of combustible gas are blocked due to the formation of the carbonized structure, so that the combustion of the cable is resisted. In addition, in order to ensure better flame retardant effect, the outer sheath is made of halogen-free low-smoke flame retardant polyolefin material, the material not only can play a flame retardant effect, but also has halogen-free and low-smoke performance, and can play an environment-friendly flame retardant effect when being matched with a high-flame retardant glass cloth belt.
2. Design of anti-interference and anti-damage structure
The shielding structure can shield an electric field in the cable core, eliminate interference to the outside and bear part of mechanical force. In addition, a steel tape armor layer is added between the inner sheath and the outer sheath, so that the radial reinforcement effect can be achieved, and the influence on the work of the cable due to external mechanical damage can be prevented.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (3)
1. An environment-friendly flame-retardant shielding control cable comprises a plurality of insulating wire cores arranged in the center of the cable, wherein the plurality of insulating wire cores and a filling material are twisted together to form a round cable core, and a wrapping tape, an inner sheath, an armor layer and an outer sheath are sequentially arranged outside the cable core; it is characterized in that the preparation method is characterized in that,
each insulated wire core comprises a single solid conductor and an insulated layer extruded outside the conductor, the thickness of the insulated layer is 0.6-0.7 mm, and the insulated layer is made of a crosslinked polyethylene insulated material;
the wrapping belt is made of a high-flame-retardant glass cloth belt with the thickness of 0.17mm and wrapped outside the cable core according to the overlapping rate of 15-20%;
a shielding layer is arranged between the wrapping tape and the inner sheath, the shielding layer is formed by bidirectional cross-weaving of soft copper wires according to a set weaving density, and the shielding layer is wrapped outside the wrapping tape;
the armor layer is wrapped outside the inner sheath in a clearance mode by adopting a double-layer galvanized steel strip according to a set clearance rate;
the outer sheath is made of halogen-free low-smoke flame-retardant polyolefin material and is extruded outside the armor layer.
2. The environment-friendly flame-retardant shielding control cable according to claim 1, wherein the diameter of the soft copper wire is 0.2 mm; the weaving density is greater than 80%.
3. The environment-friendly flame-retardant shielding control cable according to claim 1, wherein the thickness of each layer of galvanized steel strip is 0.2-0.5 mm, and the gap ratio is 45-50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798474.9U CN208240374U (en) | 2018-05-28 | 2018-05-28 | A kind of environmental-protection flame-retardant shielding control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798474.9U CN208240374U (en) | 2018-05-28 | 2018-05-28 | A kind of environmental-protection flame-retardant shielding control cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208240374U true CN208240374U (en) | 2018-12-14 |
Family
ID=64575821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820798474.9U Expired - Fee Related CN208240374U (en) | 2018-05-28 | 2018-05-28 | A kind of environmental-protection flame-retardant shielding control cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208240374U (en) |
-
2018
- 2018-05-28 CN CN201820798474.9U patent/CN208240374U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 |