CN216450421U - Urban rail is with anti-impact, resistant two shielding direct current power cable that prevent fires of dragging mineral - Google Patents
Urban rail is with anti-impact, resistant two shielding direct current power cable that prevent fires of dragging mineral Download PDFInfo
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- CN216450421U CN216450421U CN202123184321.6U CN202123184321U CN216450421U CN 216450421 U CN216450421 U CN 216450421U CN 202123184321 U CN202123184321 U CN 202123184321U CN 216450421 U CN216450421 U CN 216450421U
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 31
- 239000011707 mineral Substances 0.000 title claims abstract description 31
- 239000003063 flame retardant Substances 0.000 claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 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 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 2
- 241000256602 Isoptera Species 0.000 abstract description 5
- 241000700159 Rattus Species 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 5
- 230000004224 protection Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an impact-resistant and drag-resistant mineral fireproof double-shielded direct-current power cable for urban rails, which comprises an insulating shielding wire core, wherein a semiconductive water-blocking tape is wound outside the insulating shielding wire core, a composite shielding layer is arranged outside the semiconductive water-blocking tape, a high-flame-retardant water-blocking tape is wound outside the composite shielding layer, a halogen-free low-smoke flame-retardant oxygen-isolating layer is extruded outside the high-flame-retardant water-blocking tape, an aramid fiber woven layer is arranged outside the halogen-free low-smoke flame-retardant oxygen-isolating layer, a fully-closed metal pipe is arranged outside the aramid fiber woven layer, a ceramic mineral fireproof layer is extruded outside the fully-closed metal pipe, a high-flame-retardant mineral tape is wound outside the ceramic mineral fireproof layer, and a halogen-free low-smoke rat-proof, termite proof, ultraviolet-proof and high-flame-retardant outer sheath is extruded outside the high-flame-retardant mineral tape. The cable has the characteristics of wide application, reliable grounding, good safety, high leakage current in a short time and the like, and can be used in the occasions of impact resistance, pressure resistance, fire prevention, high flame retardance, rat and ant resistance, ultraviolet ray resistance and the like in urban light rail traffic subways.
Description
Technical Field
The utility model belongs to the field of electric wires and cables, and particularly relates to an impact-resistant and dragging-resistant mineral fireproof double-shielded direct-current power cable for an urban rail.
Background
Urban rail transit is the main measure of improving the traffic environment in the international big cities at present, and due to the particularity of rail transit, the requirements on the safety and the reliability of a power system are extremely high. The laying environment of subway and light rail cables is complex, and products in the prior art cannot meet various strict requirements of laying at the same time; the cable for urban light rail subways is mostly underground with dense population, and once a fire disaster occurs, the underground closed environment brings great difficulty to personnel escape and fire fighting work; therefore, the requirement on the flame retardant property is high, and the flame retardant property meets the requirement of non-combustible grade in GB 31247 standard or exceeds the requirement of A grade in GB/T18380.3; meanwhile, the release of smoke and toxic gas during combustion can hinder the fire-fighting work, and the acidic gas can cause harm to people and equipment, so that the requirement on the release amount of smoke and toxic gas during combustion is high; due to the action of environmental and meteorological factors, the cable for the urban light rail subway can be laid in a humid environment for a long time, and water molecules can possibly enter the cable, enter the cable and are absorbed by insulation adsorption to cause electricity
The performance reduction can cause the oxidation and corrosion of conductors, which not only affects the electrical performance of the cable, but also causes abnormal disconnection accidents in severe cases, so that the cable has a waterproof function.
The cable for the urban light rail subway is laid underground for a long time and is easily attacked by small animals (such as rats and ants) to influence the performance of the cable, and the cable has the functions of rat prevention and termite prevention; if the cable for the urban light rail subway is laid on the overhead light rail instead of being used in the subway, the cable can be subjected to the tests of sunlight irradiation and various meteorological conditions for a long time, the phenomena of color fading, mechanical and physical performance reduction and even cracking and the like easily occur when the sheath of the cable is irradiated by the sunlight for a long time, and the cable has an ultraviolet-proof function; the cable for the urban light rail subway has limited laying space, and requires light weight, good flexibility and small turning radius of the direct-current cable on one hand; on the other hand, the cables laid in the laying pipeline are various in types and large in number, and urban light rail subways need a large number of control cables, signal cables, protection cables and measuring cables besides a large number of power cables; in addition, the cable is in the process of laying due to long line, poor laying environment, large height drop and the like in the urban rail, and the tensile strength is higher in the laying process
The phenomenon of external force impact scratch or breakage is easily caused, and waste is caused to a certain degree.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the existing problems, provides an impact-resistant and dragging-resistant mineral fireproof double-shielded direct current power cable for urban rails, overcomes the defects of the conventional product cable, and has the characteristics of good electric conductivity, soft structure, electromagnetic interference resistance, reliable grounding, wide application range, flame retardance, rat resistance, termite resistance, ultraviolet resistance, fire resistance, water resistance, good safety, environmental protection and the like; the safe, stable and economic operation of the electric power supply system in the urban rail transit building is effectively guaranteed.
The utility model relates to an impact-resistant and drag-resistant mineral fireproof double-shielded direct-current power cable for urban rails, which comprises an insulating shielding wire core, wherein a semiconductive water-blocking tape is wound outside the insulating shielding wire core, a composite shielding layer is arranged outside the semiconductive water-blocking tape, a high-flame-retardant water-blocking tape is wound outside the composite shielding layer, a halogen-free low-smoke flame-retardant oxygen-isolating layer is extruded outside the high-flame-retardant water-blocking tape, an aramid fiber woven layer is arranged outside the halogen-free low-smoke flame-retardant oxygen-isolating layer, a fully-closed metal pipe is arranged outside the aramid fiber woven layer, a ceramic mineral fireproof layer is extruded outside the fully-closed metal pipe, a high-flame-retardant mineral tape is wound outside the ceramic mineral fireproof layer, and a halogen-free low-smoke rat-proof, termite proof, ultraviolet-proof and high-flame-retardant outer sheath is extruded outside the high-flame-retardant mineral tape.
The further improvement is that the insulation shielding wire core comprises a conductor, and an inner semi-conductive shielding layer, a cross-linked polyethylene insulating layer and an outer semi-conductive shielding layer are sequentially extruded outside the conductor.
The composite shielding layer is formed by weaving a tinned copper wire to form a shielding layer and wrapping a soft metal belt outside the tinned copper wire to form the shielding layer.
In a further improvement, the conductor adopts a 2 nd bare annealed copper conductor.
The improved fully-enclosed metal pipe is characterized in that the head and tail joints of the fully-enclosed metal pipe are welded by argon arc welding.
The fully-enclosed metal pipe is formed by longitudinally wrapping a copper strip with a certain thickness and welding the copper strip by argon arc welding, and an actual corrugated metal pipe is formed in a spiral mould mode;
the utility model has the beneficial effects that:
through the improvement of the structure, the cable overcomes the defects of the conventional product cable, and has the characteristics of good electric conductivity, high insulating property, super flame retardance A level, no halogen, low smoke, good comprehensive water-blocking effect, rat and ant resistance, ultraviolet ray resistance, electric field interference resistance, good bending property, compact structure, reliable grounding, fire resistance, mechanical shock resistance, strong dragging resistance, safety, environmental protection and the like; the safe, stable and economic operation of the electric power supply system in the urban rail transit building is effectively guaranteed. The cable has the characteristics of wide application, reliable grounding, good safety, high leakage current in a short time and the like, and can be mainly used in the occasions of impact resistance, pressure resistance, fire prevention, high flame retardance, rat and ant resistance, ultraviolet ray resistance and the like of urban light rail traffic subways.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
As shown in fig. 1, the impact-resistant and dragging-resistant mineral fireproof double-shielded direct-current power cable for the urban rail comprises an insulation shielding wire core, wherein the insulation shielding wire core comprises a conductor 1, specifically a 2 nd bare annealed copper conductor, an inner semi-conductive shielding layer 2, a crosslinked polyethylene insulating layer 3 and an outer semi-conductive shielding layer 4 are sequentially extruded outside the conductor, and an inner and outer double-shielding structure is adopted in the wire core, so that the shielding of interference of a surrounding electric field, a magnetic field and signals in the urban rail can be prevented, and the normal operation of a circuit of the insulation wire core is ensured;
the semi-conductive water-blocking tape 5 is wound outside the insulated shielding wire core, so that the insulated wire core of the cable is prevented from water inflow, and meanwhile, the outer semi-conductive layer is protected, and the metal shielding is prevented from being damaged; a composite shielding layer is arranged outside the semi-conductive water-blocking belt, the composite shielding layer is composed of a tinned copper wire braided shielding layer 6 and a soft metal belt 7 wrapped outside the tinned copper wire braided shielding layer, and a composite shielding mode is adopted, so that the shielding structure of the cable is full, anti-interference, stable and reliable; the structure greatly improves the shielding of the interference of surrounding electric fields, magnetic fields and signals in the urban rail, ensures the safety of normal operation of the line, can select the size of the composite shielding layer according to the size of leakage current, and has convenient and reasonable structure and reliable use;
the high-flame-retardant water-blocking tape 8 is wrapped outside the composite shielding layer, and a semi-conductive water-blocking tape and an inner-outer double-layer water-blocking structure of the high-flame-retardant water-blocking tape are adopted, so that the invasion of water in the longitudinal operation process of the insulated wire core is effectively prevented, and the electrical performance of the wire core is guaranteed and guaranteed;
the high flame-retardant water-blocking tape is externally extruded with a halogen-free low-smoke flame-retardant oxygen-insulating layer 9, and the high flame-retardant water-blocking and halogen-free low-smoke flame-retardant oxygen-insulating layer has a combined structure, so that the product has excellent flame retardance, high oxygen index and heat insulation and oxygen insulation properties; no halogen acid gas is discharged during combustion, the release amount of toxic and corrosive gas is very little, the smoke concentration of the product is very low, the flame retardant effect is very good, and the harmfulness is small;
the cable is provided with the aramid fiber woven layer 10 outside the halogen-free low-smoke flame-retardant oxygen-isolating layer, the aramid fiber enables the cable to have excellent performances of acid resistance, alkali resistance, light weight and the like, the strength of the cable is 5-6 times that of a steel wire, the toughness of the cable is 2 times that of the steel wire, the weight of the cable is only about 1/5 times that of the steel wire, the cable does not decompose or melt at the high temperature of 560 ℃, and the cable has good dragging resistance;
the fully-closed metal pipe 11 is arranged outside the aramid fiber wire braided layer, is formed by longitudinally wrapping copper strips with certain thickness through argon arc welding, and forms an actual corrugated metal pipe through a spiral mould type, so that the corrugated metal pipe can be used as a ground, and meanwhile, the metal pipe has certain functions of resisting external force impact, resisting flame and shielding signals; in addition, the metal pipe adopts an argon arc welding mode, comprehensively blocks water, has good rat and termite preventing effect, and ensures the electrical performance of the cable core and the integrity and safety of the structure;
the method is characterized in that a ceramic mineral fireproof layer 12 is extruded outside a fully-closed metal pipe, a high-flame-retardant mineral belt 13 is wrapped outside the ceramic mineral fireproof layer, and the ceramic mineral fireproof layer is combined with the high-flame-retardant belt wrapping structure to form a new composite structure; in addition, the incrustation of the high flame-retardant belt and the mineral fireproof layer is also good, after flame combustion, moisture is separated out and converted into a non-fusible and non-combustible magnesium oxide hard shell which is wrapped outside the metal pipe to prevent flame from entering the wire core, and the insulation is isolated from being contacted with external oxygen, so that the fire behavior is controlled;
finally, the halogen-free low-smoke rat-proof, ant-proof, ultraviolet-proof and high-flame-retardant outer sheath 14 is extruded outside the high-flame-retardant mineral belt, the rat-proof, ant-proof and repellent agent is added into the sheath, the material with ultraviolet-proof performance or the ultraviolet-proof absorbent and the like are added into the sheath material, and the cable has the characteristics of environmental protection, no public hazard, high content of effective components, small addition amount, long effective period and the like, and has the effect of protecting the cable body and the environment.
The cable overcomes the defects of the conventional product cable, and has the characteristics of good conductivity, high insulating property, super flame retardance A level, no halogen, low smoke, good comprehensive water-blocking effect, rat and ant resistance, ultraviolet ray resistance, electric field interference resistance, good bending property, compact structure, reliable grounding, fire resistance, mechanical bearing impact resistance, strong dragging resistance, safety, environmental protection and the like; the safe, stable and economic operation of the electric power supply system in the urban rail transit building is effectively guaranteed.
While the utility model has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides an urban rail is with two shielding direct current power cable of mineral fire prevention that shocks resistance, resistant dragging which characterized in that: the anti-termite and anti-ultraviolet high-flame-retardant metal wire comprises an insulating shielding wire core, wherein a semiconductive water-blocking tape is wound outside the insulating shielding wire core, a composite shielding layer is arranged outside the semiconductive water-blocking tape, a high-flame-retardant water-blocking tape is wound outside the composite shielding layer, a halogen-free low-smoke flame-retardant oxygen-insulating layer is extruded outside the high-flame-retardant water-blocking tape, an aramid fiber wire weaving layer is arranged outside the halogen-free low-smoke flame-retardant oxygen-insulating layer, a totally-enclosed metal pipe is arranged outside the aramid fiber wire weaving layer, a ceramic mineral fire-proof layer is extruded outside the totally-enclosed metal pipe, the high-flame-retardant mineral tape is wound outside the ceramic mineral fire-proof layer, and a halogen-free low-smoke rat-proof anti-termite anti-ultraviolet high-flame-retardant outer sheath is extruded outside the high-flame-retardant mineral tape.
2. The urban rail impact-resistant and drag-resistant mineral fireproof double-shielded direct-current power cable according to claim 1, wherein: the insulation shielding wire core comprises a conductor, and an inner semiconductive shielding layer, a crosslinked polyethylene insulating layer and an outer semiconductive shielding layer are sequentially extruded outside the conductor.
3. The urban rail impact-resistant and drag-resistant mineral fireproof double-shielded direct-current power cable according to claim 1, wherein: the composite shielding layer is composed of a tinned copper wire braided shielding layer and a soft metal belt wrapped outside the tinned copper wire braided shielding layer.
4. The urban rail impact-resistant and drag-resistant mineral fireproof double-shielded direct-current power cable according to claim 2, wherein: the conductor adopts a 2 nd bare annealed copper conductor.
5. The urban rail impact-resistant and drag-resistant mineral fireproof double-shielded direct-current power cable according to claim 1, wherein: the head-tail connection part of the totally-enclosed metal pipe is formed by welding through argon arc welding.
6. The impact-resistant and drag-resistant mineral fireproof double-shielded direct-current power cable for the urban rail according to claim 1 or 5, wherein: the fully-enclosed metal pipe is formed by longitudinally wrapping a copper strip with required thickness and welding the copper strip by argon arc welding, and then forming the corrugated metal pipe in a spiral mould mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123184321.6U CN216450421U (en) | 2021-12-17 | 2021-12-17 | Urban rail is with anti-impact, resistant two shielding direct current power cable that prevent fires of dragging mineral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123184321.6U CN216450421U (en) | 2021-12-17 | 2021-12-17 | Urban rail is with anti-impact, resistant two shielding direct current power cable that prevent fires of dragging mineral |
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| Publication Number | Publication Date |
|---|---|
| CN216450421U true CN216450421U (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123184321.6U Active CN216450421U (en) | 2021-12-17 | 2021-12-17 | Urban rail is with anti-impact, resistant two shielding direct current power cable that prevent fires of dragging mineral |
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| CN (1) | CN216450421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118866441A (en) * | 2024-06-26 | 2024-10-29 | 广东新力通实业有限公司 | A HDPE flame-retardant pipe for power communication and preparation method thereof |
-
2021
- 2021-12-17 CN CN202123184321.6U patent/CN216450421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118866441A (en) * | 2024-06-26 | 2024-10-29 | 广东新力通实业有限公司 | A HDPE flame-retardant pipe for power communication and preparation method thereof |
| CN118866441B (en) * | 2024-06-26 | 2025-01-24 | 广东新力通实业有限公司 | A HDPE flame-retardant pipe for power communication and preparation method thereof |
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