CN215895988U - Cold-resistant high-temperature-resistant environment-friendly moisture-proof low-voltage safety cable - Google Patents
Cold-resistant high-temperature-resistant environment-friendly moisture-proof low-voltage safety cable Download PDFInfo
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- CN215895988U CN215895988U CN202122467040.5U CN202122467040U CN215895988U CN 215895988 U CN215895988 U CN 215895988U CN 202122467040 U CN202122467040 U CN 202122467040U CN 215895988 U CN215895988 U CN 215895988U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a cold-resistant high-temperature-resistant environment-friendly moisture-proof low-voltage safety cable which sequentially comprises an insulating wire core, a fire insulating layer, a filling layer, a moisture-proof layer and an outer sheath from inside to outside, wherein the insulating wire core consists of a conductor and an insulating layer, the insulating layer is formed by winding a ceramic fire-resistant tape, the outer sheath is processed by cross-linking low-smoke halogen-free flame-retardant polyolefin material, and a fireproof shockproof wire is arranged in the fire insulating layer. The cable has the advantages of excellent fireproof performance, moisture resistance, cold resistance and high temperature resistance, safety, environmental protection, prolonged service life, ensured normal operation of cable transmission and easy popularization.
Description
The technical field is as follows:
the utility model relates to a low-voltage cable, in particular to a cold-resistant high-temperature-resistant environment-friendly moisture-proof low-voltage safety cable, and belongs to the field of fireproof building cables.
Background art:
along with the development of society, the scale of cities is continuously enlarged, high-rise buildings are continuously emerged, important buildings are continuously increased, and the great loss of life and property caused by fire disasters caused by electric circuits, particularly extra-large fire disasters, has aroused the high attention of people; the related departments count that the fire caused by the electric line accounts for 60 percent of the fire, so the prevention of fire casualties and the like becomes the first major affairs of large-scale cities, and an environment-friendly fireproof cable is required to be used for ensuring that the equipment can normally run without power failure in the fire.
The temperature in winter in northern China is low, but the effect of the cold-resistant cable on the market is not obvious at present, the cable is easy to become hard and brittle when used in a low-temperature environment, the bending performance is poor, and the use of the cable is seriously influenced; therefore, the cable must have cold resistance.
When the cable is laid in a wet place, the cable is required to have a moisture-proof function so as to prevent moisture from entering the cable, damage is caused to the cable, and long-term stable operation of the cable is ensured; therefore, the cable must also have good moisture resistance.
With the increase of the operation period of the cable, the aging condition of the cable is more and more serious, the probability of the insulation breakdown accident caused by the aging condition is increased year by year, and the phenomenon of thermal aging of the cable insulation fire-proof layer often occurs, which is also one of the main reasons for the accident. Therefore, the cable must also have high temperature resistance.
The utility model has the following contents:
the technical problem to be solved by the utility model is as follows: the defects of the prior art are overcome, and the cold-resistant, high-temperature-resistant, environment-friendly and moisture-proof low-voltage safety cable is provided, so that the cable has excellent fireproof performance, moisture resistance, cold resistance and high-temperature resistance, and is safe and environment-friendly.
The technical scheme adopted by the utility model for solving the technical problem is as follows:
the utility model provides a cold-resistant high temperature resistant environmental protection moisture-proof type low pressure safety cable, cold-resistant high temperature resistant environmental protection moisture-proof type low pressure safety cable from interior to exterior include insulating core, fire insulating layer, dampproof course and oversheath in proper order, insulating core comprises conductor and insulating layer, the insulating layer adopts the fire-resistant area of pottery to wind the package and forms, the oversheath adopts the processing of the fire-retardant polyolefin material of cross-linking low smoke and zero halogen to form, be provided with the shockproof silk of fire prevention in the fire insulating layer.
The conductor is formed by twisting a plurality of monofilament wires or a single solid wire, and the wire is processed by copper, tin-plated copper or nickel-plated copper material.
The fire insulation layer is formed by lapping ceramic fire-resistant belts or mica tapes in an overlapping mode, and fire-proof shockproof wires are arranged between the lapping layers of the ceramic fire-resistant belts or the mica tapes, the number of the fire-proof shockproof wires is at least three, the fire-proof shockproof wires are uniformly distributed outside the insulating layer and located in the fire insulation layer, and the fire-proof shockproof wires are processed by non-magnetic metal materials.
The moisture-proof layer is formed by wrapping a polyethylene double-sided aluminum-plastic composite tape, a polyethylene double-sided copper-plastic composite tape or a polyethylene double-sided steel-plastic composite tape.
The cold-resistant, high-temperature-resistant, environment-friendly and moisture-proof low-voltage safety cable sequentially comprises at least two insulating wire cores, a fire insulating layer, a filling layer, a moisture-proof layer and an outer sheath from inside to outside, wherein the adjacent insulating wire cores are distributed in a tangent mode and the filling layer is arranged in a gap between the fire insulating layer and the insulating wire cores; the insulating layer adopts the package of pottery fire-resistant area to form, the filling layer adopts cold-resistant high temperature resistant filling flame retardant material to process and forms, the oversheath adopts the processing of cross-linking low smoke and zero halogen flame retardant polyolefin material to form, it is provided with the shockproof silk of fire prevention in the flame retardant layer.
The conductor is formed by twisting a plurality of monofilament wires or a single solid wire, and the wire is processed by copper, tin-plated copper or nickel-plated copper material.
The fireproof insulation layer is formed by lapping ceramic fire-resistant belts or mica tapes in an overlapping mode, fireproof shockproof wires are arranged between the lapping layers of the ceramic fire-resistant belts or the mica tapes, the number of the fireproof shockproof wires is at least six, the fireproof shockproof wires are uniformly distributed outside the insulation layer and located in the fireproof insulation layer, and the fireproof shockproof wires are processed by non-magnetic metal materials.
The moisture-proof layer is formed by wrapping a polyethylene double-sided aluminum-plastic composite tape, a polyethylene double-sided copper-plastic composite tape or a polyethylene double-sided steel-plastic composite tape.
The utility model has the following positive beneficial effects:
1. the insulating layer is formed by winding a ceramic fire-resistant belt, the ceramic fire-resistant belt can adapt to the continuous use environment temperature of minus 60-200 ℃, can be used statically at the high temperature of 350-3000 ℃, and is the key for ensuring the cold resistance of the cable at minus 40 ℃ and the high temperature resistance of the cable at the maximum operation temperature of 150 ℃.
2. The fire insulation layer is formed by lapping ceramic fire-resistant tapes or mica tapes in an overlapping mode and is matched with the insulating layer for use, so that the circuit is kept completely electrified after the fire-resistant temperature of the cable reaches (950-1000) DEG C, and the cable is cooled for 180min and 15 min; after the fire-resistant temperature of the cable reaches 950-1000 ℃, fire is supplied for 120min and water is sprayed for 15min, the circuit is completely electrified; the cable is heated to 950-1000 ℃ and mechanically vibrated for 120min, and the circuit is completely electrified.
3. The moisture-proof layer is formed by processing a polyethylene double-sided aluminum-plastic composite tape, a polyethylene double-sided copper-plastic composite tape and a polyethylene double-sided steel-plastic composite tape, so that after the cable is soaked in water for 72 hours, the composite layer outside the moisture-proof layer is removed, and the outer surface of the insulating and fire-proof layer is dry by visual observation.
4. The outer sheath is processed by adopting a cross-linked low-smoke halogen-free flame-retardant polyolefin material, the material has cold resistance (-40 ℃) and high temperature resistance (the highest operation temperature of a conductor is 150 ℃), and the outer sheath is a core piece which ensures that the lowest environment temperature of the cable is-40 ℃ and the highest operation temperature of the conductor is 150 ℃ when the cable is normally operated.
4. According to the utility model, the fireproof and shockproof wires are arranged in the fire insulation layer, so that when a cable fire happens, a building shakes, the fire insulation layer is protected from falling, and flame is prevented from further damaging the insulating and fireproof layer.
5. According to the utility model, the filling layer is arranged between the insulating wire core and the fire insulation layer and is made of the cold-resistant and high-temperature-resistant filling flame-retardant material, so that the roundness of the cross section of the cable is ensured, and the flame retardant property of the cable is improved.
Description of the drawings:
FIG. 1 is a schematic structural view of example 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
The specific implementation mode is as follows:
the utility model will be further explained and explained with reference to the drawings, in which:
example 1: referring to fig. 1, the cold-resistant high temperature resistant environment-friendly moisture-proof low-voltage safety cable sequentially comprises an insulating wire core, a fire insulation layer 3, a moisture-proof layer 5 and an outer sheath 6 from inside to outside, wherein the insulating wire core is composed of a conductor 1 and an insulating layer 2, the insulating layer 2 is formed by wrapping a ceramic fire-resistant tape, the outer sheath 6 is formed by processing a cross-linked low-smoke halogen-free flame-retardant polyolefin material, and a fireproof shockproof wire 7 is arranged in the fire insulation layer 3.
The conductor 1 is formed by twisting a plurality of monofilament wires or a single solid wire, and the wire is processed by copper, tin-plated copper or nickel-plated copper material.
The fire insulation layer 3 is formed by lapping ceramic fire-resistant belts or mica tapes in an overlapping mode, fire-proof shockproof wires 7 are arranged between the lapping layers of the ceramic fire-resistant belts or the mica tapes, the number of the fire-proof shockproof wires 7 is at least three, the fire-proof shockproof wires 7 are evenly distributed outside the insulating layer 2 and are located in the fire insulation layer 3, and the fire-proof shockproof wires 7 are made of nonmagnetic metal materials.
The moisture-proof layer 5 is formed by wrapping a polyethylene double-sided aluminum-plastic composite tape, a polyethylene double-sided copper-plastic composite tape or a polyethylene double-sided steel-plastic composite tape.
In the above description, when the cross section of the cable is 10mm2And when above, the conductor is adopted ifThe dry monofilament conductors are twisted, and need to be compressed when being twisted, so that the gaps among the monofilaments are reduced; when the cross section of the cable is 6mm2And when the conductor is below, the conductor is formed by a single solid wire.
In the above description, the fireproof and shockproof wire is a solid copper wire.
The conductor 1 is formed by twisting a plurality of monofilament wires or a single solid wire, and the wire is processed by copper, tin-plated copper or nickel-plated copper material.
The fire insulation layer 3 is formed by lapping ceramic fire-resistant belts or mica tapes in an overlapping mode, fire-proof shockproof wires 7 are arranged between the lapping layers of the ceramic fire-resistant belts or the mica tapes, the number of the fire-proof shockproof wires 7 is at least six, the fire-proof shockproof wires 7 are uniformly distributed outside the insulating layer 2 and are located in the fire insulation layer 3, and the fire-proof shockproof wires 7 are made of nonmagnetic metal materials.
The moisture-proof layer 5 is formed by wrapping a polyethylene double-sided aluminum-plastic composite tape, a polyethylene double-sided copper-plastic composite tape or a polyethylene double-sided steel-plastic composite tape.
In the above description, when the cross section of the cable is 10mm2In the above process, the conductor is formed by twisting a plurality of single-wire conducting wires, and the wires are required to be compressed during twisting, so that the gaps among the single wires are reduced; when the cross section of the cable is 6mm2And when the conductor is below, the conductor is formed by a single solid wire.
In the above description, the fireproof and shockproof wire is a solid copper wire.
The materials used in the utility model are all environment-friendly materials,the halogen-free performance of the cable non-metallic material is ensured, and the test shows that: the fluorine content is not more than 0.1 percent, the HCl and HBr contents are not more than 0.5 percent, the HF content is not more than 0.1 percent, the halogen contents of fluorine (F), chlorine (Cl), bromine (Br) and iodine (I) are not more than 1mg/g, the minimum value of the pH value of gas during product combustion is 4.3, and the gas conductivity during product combustion is not more than 1 mu S/mm; ensuring that the minimum light transmittance of smoke generated by the combustion of a cable product is not less than 80 percent; the limit value of toxic and harmful substances in the cable is ensured, namely lead (Pb) is less than or equal to 800 mg/kg; mercury (Hg) is less than or equal to 800 mg/kg; the content of Cd is less than or equal to 80 mg/kg; hexavalent chromium (Cr 6 +) is less than or equal to 800 mg/kg; polybrominated biphenyls (PBB) are less than or equal to 800 mg/kg; polybrominated diphenyl ethers (PBDEs, excluding decabromodiphenyl ether) of less than or equal to 800 mg/kg; meanwhile, the smoke toxicity of the cable is ensured to be consistent with combustion; ZA when the smoke concentration is more than or equal to 12.4mg/L2The requirement of (1) is anesthesia, no death (including within 1h after infection) occurs in the experimental mouse in the 30min infection period; irritancy, 3-scale average body weight recovery of experimental mice after challenge.
The cable has high fireproof performance, moisture resistance, cold resistance and high temperature resistance, is safe and environment-friendly, prolongs the service life of the cable, and ensures the normal operation of cable transmission.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a cold-resistant high temperature resistant environmental protection moisture-proof type low pressure safety cable which characterized in that: cold-resistant high temperature resistant environmental protection moisture-proof type low pressure safety cable from interior to exterior include insulating core, fire barrier (3), dampproof course (5) and oversheath (6) in proper order, insulating core comprises conductor (1) and insulating layer (2), insulating layer (2) adopt the fire-resistant area of pottery to wind the package and form, oversheath (6) adopt the processing of the fire-retardant polyolefin material of cross-linking low smoke and zero halogen to form, be provided with the shockproof silk of fire prevention (7) in fire barrier (3).
2. The cold-resistant high temperature resistant environment-friendly moisture-proof low-voltage safety cable according to claim 1, characterized in that: the conductor (1) is formed by twisting a plurality of monofilament wires or a single solid wire, and the wires are processed by copper, tin-plated copper or nickel-plated copper materials.
3. The cold-resistant high temperature resistant environment-friendly moisture-proof low-voltage safety cable according to claim 1, characterized in that: the fireproof insulation layer is characterized in that the fire insulation layer (3) is formed by overlapping ceramic fire-resistant belts or mica tapes, fireproof shockproof wires (7) are arranged between the ceramic fire-resistant belts or mica tapes, the number of the fireproof shockproof wires (7) is at least three, the fireproof shockproof wires are uniformly distributed outside the insulation layer (2) and are located in the fire insulation layer (3), and the fireproof shockproof wires (7) are formed by processing nonmagnetic metal materials.
4. The cold-resistant high temperature resistant environment-friendly moisture-proof low-voltage safety cable according to claim 1, characterized in that: the moisture-proof layer (5) is formed by wrapping a polyethylene double-sided aluminum-plastic composite tape, a polyethylene double-sided copper-plastic composite tape or a polyethylene double-sided steel-plastic composite tape.
5. The utility model provides a cold-resistant high temperature resistant environmental protection moisture-proof type low pressure safety cable which characterized in that: the cold-resistant, high-temperature-resistant, environment-friendly and moisture-proof low-voltage safety cable sequentially comprises at least two insulating wire cores, a fire insulating layer (3), a filling layer (4), a moisture-proof layer (5) and an outer sheath (6) from inside to outside, wherein each insulating wire core consists of a conductor (1) and an insulating layer (2), adjacent insulating wire cores are distributed in a tangent mode, and the filling layer (4) is arranged in a gap between the fire insulating layer (3) and each insulating wire core; insulating layer (2) adopt the ceramic fire-resistant area to form around the package, filling layer (4) adopt cold-resistant high temperature resistant filling flame retardant material to process and form, oversheath (6) adopt the processing of cross-linking low smoke and zero halogen flame retardant polyolefin material to form, be provided with the shockproof silk of fire prevention (7) in fire insulation layer (3).
6. The cold-resistant high temperature resistant environment-friendly moisture-proof low-voltage safety cable according to claim 5, characterized in that: the conductor (1) is formed by twisting a plurality of monofilament wires or a single solid wire, and the wires are processed by copper, tin-plated copper or nickel-plated copper materials.
7. The cold-resistant high temperature resistant environment-friendly moisture-proof low-voltage safety cable according to claim 5, characterized in that: the fire insulation layer (3) is formed by lapping ceramic fire-resistant tapes or mica tapes in an overlapping mode, and at least six fireproof and shockproof wires (7) are arranged between the lapping layers of the ceramic fire-resistant tapes or the mica tapes and are uniformly distributed outside the insulation layer (2) and positioned in the fire insulation layer (3); the fireproof and shockproof wire (7) is made of nonmagnetic metal materials.
8. The cold-resistant high temperature resistant environment-friendly moisture-proof low-voltage safety cable according to claim 5, characterized in that: the moisture-proof layer (5) is formed by wrapping a polyethylene double-sided aluminum-plastic composite tape, a polyethylene double-sided copper-plastic composite tape or a polyethylene double-sided steel-plastic composite tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122467040.5U CN215895988U (en) | 2021-10-13 | 2021-10-13 | Cold-resistant high-temperature-resistant environment-friendly moisture-proof low-voltage safety cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122467040.5U CN215895988U (en) | 2021-10-13 | 2021-10-13 | Cold-resistant high-temperature-resistant environment-friendly moisture-proof low-voltage safety cable |
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| Publication Number | Publication Date |
|---|---|
| CN215895988U true CN215895988U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122467040.5U Active CN215895988U (en) | 2021-10-13 | 2021-10-13 | Cold-resistant high-temperature-resistant environment-friendly moisture-proof low-voltage safety cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215895988U (en) |
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2021
- 2021-10-13 CN CN202122467040.5U patent/CN215895988U/en active Active
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