CN214705488U - Stretch-proofing type single core low voltage insulation cable - Google Patents
Stretch-proofing type single core low voltage insulation cable Download PDFInfo
- Publication number
- CN214705488U CN214705488U CN202121218960.7U CN202121218960U CN214705488U CN 214705488 U CN214705488 U CN 214705488U CN 202121218960 U CN202121218960 U CN 202121218960U CN 214705488 U CN214705488 U CN 214705488U
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- CN
- China
- Prior art keywords
- pet
- stretch
- low voltage
- inner conductor
- single core
- 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.)
- Expired - Fee Related
Links
- 238000009413 insulation Methods 0.000 title description 3
- 239000004020 conductor Substances 0.000 claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 10
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 229910000077 silane Inorganic materials 0.000 claims abstract description 9
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000003118 aryl group Chemical group 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 43
- 238000004804 winding Methods 0.000 claims description 10
- 239000002356 single layer Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 abstract description 4
- 238000004132 cross linking Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 230000017105 transposition Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 3
- 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 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229920006240 drawn fiber Polymers 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 240000005572 Syzygium cordatum Species 0.000 description 1
- 235000006650 Syzygium cordatum Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000626 liquid-phase infiltration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a stretch-proofing type single core low voltage insulated cable, include the inner conductor and in proper order the cladding be in the outside PET of inner conductor indulges covering, PET, silane grafting cross-linking low density polyethylene insulating layer, butyl rubber dampproof course and CPE oversheath around covering, the inner conductor is that tin-plated copper monofilament and a plurality of counterpoint type wholly aromatic copolyamide tensile fiber silk transposition that a plurality of diameters are not less than 0.1mm close the constitution, PET is around the covering for PET resin area individual layer clearance around the package structure, PET around the covering with PET indulges the total thickness of covering and is 0.04mm to 0.1mm, and the external diameter of CPE oversheath is 28mm to 36 mm. The insulated cable is good in flexibility, excellent in stretch-proofing performance, capable of effectively reducing deformation and breakage of the copper wire and good in laying and installation flexibility.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a stretch-proofing type single core low voltage insulated cable.
Background
A large number of cables are applied to the construction of a low-voltage power distribution system, the cable has good insulating property, the power supply reliability can be improved, the appearance of the city is beautified, and the popularization and application values are higher. However, the tensile strength of a general cable is insufficient, and in the process of laying and installing, after the cable is bent to different degrees, the conductor core bears torsional stress, so that the phenomenon of deformation and breakage of a copper wire is easy to occur, and the durability and the usability are poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a single core low voltage insulated cable of stretch-proofing type, and the pliability is good, and stretch-proofing performance is excellent, effectively reduces the copper wire and warp the broken string and takes place, and the installation flexibility of laying is better.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The stretch-proofing single-core low-voltage insulated cable comprises an inner conductor, a PET wrapping layer, a PET longitudinal wrapping layer, a silane grafted cross-linked low-density polyethylene insulating layer, a butyl rubber moisture-proof layer and a CPE outer sheath, wherein the PET wrapping layer, the PET longitudinal wrapping layer, the silane grafted cross-linked low-density polyethylene insulating layer, the butyl rubber moisture-proof layer and the CPE outer sheath are sequentially wrapped outside the inner conductor, the inner conductor is formed by twisting a plurality of tinned copper monofilaments with the diameter not smaller than 0.1mm and a plurality of para-type wholly aromatic copolyamide tensile fibers, the PET wrapping layer is a PET resin belt single-layer gap wrapping structure, the total thickness of the PET wrapping layer and the PET longitudinal wrapping layer is 0.04mm to 0.1mm, and the outer diameter of the CPE outer sheath is 28mm to 36 mm.
Preferably, the inner conductor lay length is 10 to 20 times the outer diameter of the inner conductor.
Preferably, the CPE outer sheath has a thickness of 2.2mm to 3.5 mm.
Preferably, the winding pitch of the PET resin tape is 2 to 4 times the tape width.
Preferably, the pitch of the PET resin tape is 40mm to 90 mm.
Preferably, the thickness of the silane grafted and crosslinked low-density polyethylene insulating layer is 2.6mm to 4.5 mm.
Preferably, the thickness of the butyl rubber moisture barrier layer is 1mm to 2 mm.
Preferably, the diameter of the tin-plated copper monofilament does not exceed 1 mm.
The utility model has the advantages that:
1. increase PET around the covering between inner conductor and silane grafting crosslinking low density polyethylene insulating layer, PET indulges the covering, PET winds the covering and winds the covering for PET resin band individual layer clearance around the package structure, improve the inner conductor, help preventing that the inner conductor is loose and keep the inner conductor to become circular cross-section, PET indulges the vertical cladding PET of covering around the covering, make to form the effective isolation of no space between inner conductor and the insulating layer, effectively prevent insulating layer hot melt infiltration direct contact inner conductor, and, when bearing the bending, PET indulges around covering and PET and can produce between the covering and slide, the lateral pressure that the insulating layer bore can not transmit the inner conductor easily, the bending resistance characteristic has been improved greatly, help preventing that the copper wire conductor warp the broken string and take place.
2. The inner conductor is formed by twisting a tin-plated copper monofilament with the diameter not less than 0.1mm and a para-type wholly aromatic copolyamide drawn fiber, the tensile elastic modulus of the para-type wholly aromatic copolyamide drawn fiber is large, the tensile strength of the inner conductor is improved, the tin-plated copper monofilament with the diameter not less than 0.1mm is not prone to deformation and fiber breakage, the cable integrally has better bending resistance, and the flexibility of the laying and installation process is better.
3. The butyl rubber moisture-proof layer is combined with the CPE outer sheath for use, so that the waterproof flame-retardant butyl rubber moisture-proof layer has good waterproof flame-retardant characteristics, the thickness design is optimized, the thickness of the butyl rubber moisture-proof layer is not more than 2mm, the water diffusion to the insulating layer is effectively prevented, and the water tree aging phenomenon of the insulating layer is delayed.
Drawings
Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.
In the figure: the cable comprises 1-an inner conductor, 2-PET lapping layers, 3-PET longitudinal cladding layers, 4-silane grafted cross-linked low-density polyethylene insulating layers, 5-butyl rubber moisture-proof layers and 6-CPE outer sheaths.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses stretch-proofing type single core low voltage insulated cable, include inner conductor 1 and cladding in proper order the PET of inner conductor 1 outside indulges covering 2, PET longitudinal wrapping 3, silane grafting crosslinking low density polyethylene insulating layer 4, butyl rubber dampproof course 5 and CPE oversheath 6 around covering, inner conductor 1 is that tin-plated copper monofilament and a plurality of counterpoint type wholly aromatic copolyamide drawing fiber strand twists constitution, and is preferred that a plurality of diameters are not less than 0.1mm, tin-plated copper monofilament diameter is no more than 1 mm. Further, the lay length of the inner conductor 1 is 10 to 20 times of the outer diameter of the inner conductor 1. PET is around covering 2 for PET resin area individual layer clearance around the package structure, further, the distance of winding in PET resin area is 2 to 4 times of bandwidth, for example the distance of winding in PET resin area is 40mm to 90 mm. The total thickness of the PET wrapping layer 2 and the PET longitudinal covering layer 3 is 0.04mm to 0.1mm, for example, the thickness of the PET wrapping layer 2 and the thickness of the PET longitudinal covering layer 3 are both 0.05 mm. The thickness of the silane-grafted crosslinked low-density polyethylene insulation layer 4 is preferably 2.6mm to 4.5 mm. The butyl rubber moisture barrier 5 is preferably up to 2mm thick. The outer diameter of the CPE outer sheath 6 is 28mm to 36mm, and further, the thickness of the CPE outer sheath 6 is 2.2mm to 3.5 mm.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. Stretch-proofing type single core low voltage insulated cable, characterized by: the novel PET winding device comprises an inner conductor (1) and PET winding layers (2), a PET longitudinal covering layer (3), a silane grafted cross-linked low-density polyethylene insulating layer (4), a butyl rubber moisture-proof layer (5) and a CPE outer sheath (6) which are sequentially coated outside the inner conductor (1), wherein the inner conductor (1) is formed by twisting a plurality of tinned copper monofilaments with the diameter not less than 0.1mm and a plurality of para-type wholly aromatic copolyamide tensile fiber yarns, the PET winding layers (2) are PET resin belt single-layer gap winding structures, the total thickness of the PET winding layers (2) and the PET longitudinal covering layer (3) is 0.04mm to 0.1mm, and the outer diameter of the CPE outer sheath (6) is 28mm to 36 mm.
2. The stretch-resistant single core low voltage insulated cable of claim 1, wherein: the lay length of the inner conductor (1) is 10 to 20 times of the outer diameter of the inner conductor (1).
3. The stretch-resistant single core low voltage insulated cable of claim 1, wherein: the CPE outer sheath (6) has a thickness of 2.2mm to 3.5 mm.
4. The stretch-resistant single core low voltage insulated cable of claim 1, wherein: the winding distance of the PET resin belt is 2 to 4 times of the belt width.
5. The stretch-resistant single core low voltage insulated cable of claim 4, wherein: the winding distance of the PET resin belt is 40mm to 90 mm.
6. The stretch-resistant single core low voltage insulated cable of claim 1, wherein: the thickness of the silane grafted cross-linked low-density polyethylene insulating layer (4) is 2.6mm to 4.5 mm.
7. The stretch-resistant single core low voltage insulated cable of claim 1, wherein: the thickness of the butyl rubber moisture-proof layer (5) is 1mm to 2 mm.
8. The stretch-resistant single core low voltage insulated cable of claim 1, wherein: the diameter of the tin-plated copper monofilament is not more than 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121218960.7U CN214705488U (en) | 2021-06-02 | 2021-06-02 | Stretch-proofing type single core low voltage insulation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121218960.7U CN214705488U (en) | 2021-06-02 | 2021-06-02 | Stretch-proofing type single core low voltage insulation cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214705488U true CN214705488U (en) | 2021-11-12 |
Family
ID=78554815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121218960.7U Expired - Fee Related CN214705488U (en) | 2021-06-02 | 2021-06-02 | Stretch-proofing type single core low voltage insulation cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214705488U (en) |
-
2021
- 2021-06-02 CN CN202121218960.7U patent/CN214705488U/en not_active Expired - Fee Related
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| 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: 20211112 |