CN211907073U - Durable medium-high voltage insulated cable - Google Patents
Durable medium-high voltage insulated cable Download PDFInfo
- Publication number
- CN211907073U CN211907073U CN202020374613.2U CN202020374613U CN211907073U CN 211907073 U CN211907073 U CN 211907073U CN 202020374613 U CN202020374613 U CN 202020374613U CN 211907073 U CN211907073 U CN 211907073U
- Authority
- CN
- China
- Prior art keywords
- layer
- insulated cable
- high voltage
- copper
- voltage insulated
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052802 copper Inorganic materials 0.000 claims abstract description 31
- 239000010949 copper Substances 0.000 claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 13
- -1 polyethylene Polymers 0.000 claims abstract description 13
- 239000004698 Polyethylene Substances 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 12
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 11
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 10
- 229920001084 poly(chloroprene) Polymers 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- BLDFSDCBQJUWFG-UHFFFAOYSA-N 2-(methylamino)-1,2-diphenylethanol Chemical compound C=1C=CC=CC=1C(NC)C(O)C1=CC=CC=C1 BLDFSDCBQJUWFG-UHFFFAOYSA-N 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 229920001684 low density polyethylene Polymers 0.000 claims description 7
- 239000004702 low-density polyethylene Substances 0.000 claims description 7
- 229920001179 medium density polyethylene Polymers 0.000 claims description 7
- 239000004701 medium-density polyethylene Substances 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 8
- 229920001971 elastomer Polymers 0.000 abstract description 6
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 241001391944 Commicarpus scandens Species 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a durable medium and high voltage insulated cable, include the inner conductor and cladding in proper order the outer semi-conducting layer of EPT rubber, XLPE insulating layer, EPT rubber, copper wire shielding winding layer, PTFE around band layer, double-deck polyethylene water-blocking layer and chloroprene rubber oversheath in the inner conductor outside, copper wire shielding winding layer is that the copper strands of different line footpaths are each other reverse spiral winding to weave the constitution, copper strands comprises a stainless steel monofilament center reinforcement line and a plurality of tinned copper monofilament and twists with one heart, stainless steel monofilament footpath is 0.05mm to 0.5mm, tinned copper monofilament footpath is 0.05mm to 0.6 mm. The insulated cable has better electrical shielding performance, the shielding layer is not easy to break, the insulated cable has excellent bending resistance, the laying and installation difficulty is favorably reduced, the safety and reliability of the medium-high voltage insulated cable are improved, and the insulated cable is durable in use.
Description
Technical Field
The utility model relates to a power cable technical field especially relates to a durable type medium and high voltage insulated cable.
Background
With the continuous improvement of the power high-voltage technology and the related technology of the ultra-high power transmission system and the continuous acceleration of the global urbanization process, the crosslinked polyethylene high-voltage power cable is adopted by more and more power distribution systems and power grids due to the excellent characteristics of excellent performance, simple and easy manufacturing safety process and the like. The crosslinked polyethylene high-voltage power cable has incomparable advantages of electrical and mechanical parameters in a dry environment compared with other types of power cable products, however, the lowest allowable bending radius of the cable is not generally specified in the cable products, the construction conditions are not specified, in the actual use process, sufficient precautionary measures are not taken in the cable laying and installing process, the cable is easy to have a shielding layer disconnection phenomenon in the bending and twisting deformation process, the laying and wiring operation is difficult, and the construction difficulty is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a durable type medium and high voltage insulated cable, and electrical shielding performance is better, and the difficult phenomenon of splitting that appears in shielding layer has excellent bending resistance, helps reducing the installation degree of difficulty, improves the fail safe nature of medium and high voltage insulated cable, durable use.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
Durable medium-high voltage insulated cable, including the inner conductor and cladding in proper order the outside EPT rubber inner semi-conducting layer of inner conductor, XLPE insulating layer, EPT rubber outer semi-conducting layer, copper line shielding winding layer, PTFE around band layer, double-deck polyethylene water-blocking layer and chloroprene rubber oversheath, copper line shielding winding layer is that the copper strands of different line footpaths are each other reverse spiral winding and weave the constitution, the copper strand comprises a stainless steel monofilament center reinforcement line and the concentric transposition of a plurality of tin-plated copper monofilament, stainless steel monofilament line footpath is 0.05mm to 0.5mm, tin-plated copper monofilament line footpath is 0.05mm to 0.6 mm.
Preferably, the wire diameter of the copper stranded wire is 0.5mm to 1 mm.
Preferably, the thickness of the XLPE insulating layer is 3mm to 20 mm.
Preferably, the double-layer polyethylene water-blocking layer is formed by co-extruding an MDPE water-blocking inner layer at the inner side and an LDPE water-blocking outer layer at the outer side.
Preferably, the thickness ratio of the MDPE water-blocking inner layer to the LDPE water-blocking outer layer is from 1:10 to 1: 12.
Preferably, the inner conductor is a compound stranded wire formed by concentrically twisting a plurality of stranded wires, and the stranded wires are formed by twisting tinned copper monofilament bundles.
Preferably, the strand lay is 12 to 40 times the strand outer diameter.
Preferably, the PTFE tape layer is a gap-lapped structure and has a winding pitch of 2 to 4 times the tape width.
Preferably, the thickness of the chloroprene rubber outer sheath is 1mm to 8 mm.
Preferably, the saturated water absorption of the double-layer polyethylene water-blocking layer is less than 0.5%.
The utility model has the advantages that:
1. the copper wire shielding winding layer can effectively inhibit internal signals or noise from leaking to the outside and inhibit interference from external signals, the copper wire shielding winding layer is formed by mutually reversely spirally winding and weaving copper stranded wires with different wire diameters, which is beneficial to improving flexibility and deflection resistance, the copper stranded wires are formed by concentrically twisting a stainless steel monofilament center reinforcing wire and a plurality of tinned copper monofilaments, the stainless steel monofilament center reinforcing wire improves the mechanical strength of the copper stranded wires, the tinned copper monofilaments have excellent bending resistance and conductivity, the shielding layer formed by weaving the copper stranded wires formed by twisting the stainless steel monofilament center reinforcing wire and the tinned copper monofilaments is not easy to break, and the durability of the cable is greatly improved, and moreover, the PTFE winding belt layer is adopted, so that the friction coefficient is small, the stress concentration of the copper wire shielding winding layer is reduced, the torque force during bending is reduced, and the improvement of the bending resistance and the durability is facilitated.
And 2, the XLPE insulating layer has a small static friction coefficient, and is beneficial to improving the flexibility and bending resistance of the cable.
3. Adopt double-deck polyethylene water-blocking layer, for MDPE inner layer and LDPE outer double-deck coextrusion molding structure that blocks water, the outer thickness proportion of optimal design, under the operating mode condition that the cable meets with humidity obviously higher than normal, the water-blocking layer can effectually prevent moisture to invade inside, the insulating electrical properties of protection cable, increase of service life.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
In the figure: the cable comprises an inner conductor 1, an inner ethylene propylene diene monomer rubber semi-conducting layer 2, an XLPE insulating layer 3, an outer ethylene propylene diene monomer rubber semi-conducting layer 4, a copper wire shielding winding layer 5, a PTFE winding tape layer 7, a double-layer polyethylene water-blocking layer 7 and a chloroprene rubber outer sheath 8.
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 provides a durable type medium and high voltage insulated cable, including inner conductor 1, specific theory, inner conductor 1 constitutes compound stranded conductor for a plurality of strand concentric twists, the strand constitutes for tin-coated copper monofilament bundle twist, and is further, the strand lay length is 12 times to 40 times of strand external diameter.
The outer portion of inner conductor 1 is wrapped in proper order has EPT rubber inner semi-conducting layer 2, XLPE insulating layer 3, EPT rubber outer semi-conducting layer 4, copper wire shielding winding layer 5, PTFE around band layer 6, double-deck polyethylene water-blocking layer 7 and chloroprene rubber oversheath 8, copper wire shielding winding layer 5 is that the copper strands of different line footpaths are each other reverse spiral winding and weave and constitute, the copper strand comprises a stainless steel monofilament center reinforcement line and a plurality of tin-plated copper monofilament concentric stranding, stainless steel monofilament footpath is 0.05mm to 0.5mm, tin-plated copper monofilament footpath is 0.05mm to 0.6mm, and further, copper strand footpath is 0.5mm to 1 mm.
Preferably, the XLPE insulating layer 3 has a thickness of 3mm to 20 mm. Preferably, the saturated water absorption of the double-layer polyethylene water-blocking layer 7 is less than 0.5%, in one embodiment, the double-layer polyethylene water-blocking layer 7 is formed by co-extruding an inner MDPE water-blocking layer on the inner side and an outer LDPE water-blocking layer on the outer side, and the thickness ratio of the inner MDPE water-blocking layer to the outer LDPE water-blocking layer is preferably 1:10 to 1: 12. Preferably, the PTFE wrapping layer 6 is a gap wrapping structure and the winding pitch is 2 to 4 times the tape width. Preferably, the thickness of the neoprene outer sheath 8 is 1mm to 8 mm.
While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.
Claims (10)
1. Durable type medium and high voltage insulated cable, characterized by: the inner conductor (1) is sequentially coated with an ethylene propylene diene monomer inner semi-conducting layer (2), an XLPE insulating layer (3), an ethylene propylene diene monomer outer semi-conducting layer (4), a copper wire shielding winding layer (5), a PTFE (polytetrafluoroethylene) winding tape layer (6), a double-layer polyethylene water-blocking layer (7) and a chloroprene rubber outer sheath (8) which are arranged outside the inner conductor (1), the copper wire shielding winding layer (5) is formed by mutually winding and weaving copper stranded wires with different wire diameters in a reverse spiral mode, each copper stranded wire is formed by concentrically twisting a stainless steel monofilament center reinforcing wire and a plurality of tinned copper monofilaments, the stainless steel monofilament diameter is 0.05mm to 0.5mm, and the tinned copper monofilament diameter is 0.05mm to 0.6 mm.
2. The durable medium-high voltage insulated cable according to claim 1, wherein: the wire diameter of the copper stranded wire is 0.5mm to 1 mm.
3. The durable medium-high voltage insulated cable according to claim 1, wherein: the thickness of the XLPE insulating layer (3) is 3mm to 20 mm.
4. The durable medium-high voltage insulated cable according to claim 1, wherein: the double-layer polyethylene water-resistant layer (7) is formed by co-extruding an MDPE water-resistant inner layer at the inner side and an LDPE water-resistant outer layer at the outer side.
5. The durable medium-high voltage insulated cable according to claim 4, wherein: the thickness ratio of the MDPE water-blocking inner layer to the LDPE water-blocking outer layer is 1:10 to 1: 12.
6. The durable medium-high voltage insulated cable according to claim 1, wherein: the inner conductor (1) is a compound stranded wire formed by concentrically twisting a plurality of stranded wires, and the stranded wires are formed by twisting tinned copper monofilament bundles.
7. The durable medium-high voltage insulated cable according to claim 6, wherein: the strand lay is 12 to 40 times the strand outer diameter.
8. The durable medium-high voltage insulated cable according to claim 1, wherein: the PTFE winding band layer (6) is of a gap winding structure, and the winding distance is 2-4 times of the band width.
9. The durable medium-high voltage insulated cable according to claim 1, wherein: the thickness of the chloroprene rubber outer sheath (8) is 1mm to 8 mm.
10. The durable medium-high voltage insulated cable according to claim 1, wherein: the saturated water absorption of the double-layer polyethylene water-resistant layer (7) is less than 0.5 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020374613.2U CN211907073U (en) | 2020-03-23 | 2020-03-23 | Durable medium-high voltage insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020374613.2U CN211907073U (en) | 2020-03-23 | 2020-03-23 | Durable medium-high voltage insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211907073U true CN211907073U (en) | 2020-11-10 |
Family
ID=73268381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020374613.2U Expired - Fee Related CN211907073U (en) | 2020-03-23 | 2020-03-23 | Durable medium-high voltage insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211907073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115128413A (en) * | 2022-07-21 | 2022-09-30 | 广东电网有限责任公司 | Alternating current withstand voltage test device |
-
2020
- 2020-03-23 CN CN202020374613.2U patent/CN211907073U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115128413A (en) * | 2022-07-21 | 2022-09-30 | 广东电网有限责任公司 | Alternating current withstand voltage test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217113858U (en) | Distortion-resistant flexible cable for high-voltage wind power generation | |
| CN219017280U (en) | Torsion-resistant power cable for wind power transmission | |
| CN217239120U (en) | Heat-resistant flexible shielding flexible cable | |
| CN211907073U (en) | Durable medium-high voltage insulated cable | |
| CN213781631U (en) | High-flexibility oil-resistant tensile control cable | |
| CN220526656U (en) | Control cable for inhibiting wire breakage of shielding layer | |
| CN215770674U (en) | Multi-core parallel low-noise wire | |
| CN217444117U (en) | Tear-resistant shielding flexible cable | |
| CN217214224U (en) | FEP (fluorinated ethylene propylene) sheathed wire with tinned copper core and FEP (fluorinated ethylene propylene) insulated tinned round copper wire as shielding sheath | |
| CN217426390U (en) | Low-temperature-resistant flexible towline cable | |
| CN212010392U (en) | Tensile-resistant elevator shielding flat cable | |
| CN214336377U (en) | Special shielded waterproof flexible cable | |
| CN116779217A (en) | Water-blocking molded line stranded power cable | |
| CN220526618U (en) | Stretch-proof polyurethane elastomer sheath shielding airway cable | |
| CN211265056U (en) | Durable small-diameter communication cable | |
| CN220065221U (en) | Tension-resistant medium-voltage power cable capable of inhibiting wire breakage | |
| CN222939673U (en) | A high torsion frequency automobile steering wheel steering cable | |
| CN217181836U (en) | Torsion-resistant medium-voltage wind power flexible cable | |
| CN221304337U (en) | Medium-voltage large-section flexible cable | |
| CN214226563U (en) | Tensile middle-high voltage insulated cable | |
| CN222530060U (en) | Stretch-proofing vibration-damping type medium-voltage single-core overhead power cable | |
| CN219979187U (en) | High-flexibility torsion-resistant cable | |
| CN222354771U (en) | Double-layer stranded type shielding layer wire breakage prevention combined cable | |
| CN214705504U (en) | Extrusion-resistant stretch-resistant 4-core insulated cable | |
| CN222995119U (en) | Torsion-resistant and twist-proof overall shielded control cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201110 |