CN210692168U - Water-resistant low-smoke halogen-free high-voltage cable - Google Patents
Water-resistant low-smoke halogen-free high-voltage cable Download PDFInfo
- Publication number
- CN210692168U CN210692168U CN201921888980.8U CN201921888980U CN210692168U CN 210692168 U CN210692168 U CN 210692168U CN 201921888980 U CN201921888980 U CN 201921888980U CN 210692168 U CN210692168 U CN 210692168U
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- Prior art keywords
- layer
- water
- resistant
- fire
- voltage cable
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000000779 smoke Substances 0.000 title claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 14
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 13
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 239000011889 copper foil Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 10
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- -1 polyethylene Polymers 0.000 claims abstract description 10
- 229920000573 polyethylene Polymers 0.000 claims abstract description 10
- 239000004065 semiconductor Substances 0.000 claims abstract description 10
- 239000003063 flame retardant Substances 0.000 claims abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 9
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 9
- 229920001179 medium density polyethylene Polymers 0.000 claims abstract description 9
- 239000004701 medium-density polyethylene Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000010445 mica Substances 0.000 claims abstract description 9
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 9
- 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 abstract description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 claims abstract description 8
- 150000002367 halogens Chemical class 0.000 claims abstract description 7
- 239000010425 asbestos Substances 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 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 description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 1
- 238000005253 cladding Methods 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 5
- 230000017105 transposition Effects 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 2
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 240000005572 Syzygium cordatum Species 0.000 description 3
- 235000006650 Syzygium cordatum Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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 water-fast type low smoke and zero halogen high tension cable, cable core that constitutes including three insulation core transposition and cladding in proper order the outside high temperature glass fiber tape of cable core is around covering, fire-resistant mica tape layer, double-deck polyethylene water blocking layer, fire-resistant asbestos cloth layer and fire-retardant oversheath, double-deck polyethylene water blocking layer blocks water the outer shaping of crowded altogether of blocking water by inboard MDPE inner layer and the LDPE in the outside, the cable core with high temperature glass fiber tape has inorganic mineral heat dissipation filler around the space intussuseption between the covering, insulation core includes the inner conductor and cladding in proper order the outside semiconductor copper foil inner shield layer of inner conductor, crosslinked polyethylene insulating layer, semiconductor copper foil outer shielding layer, metal shielding layer and insulating fire prevention area isolation layer. The high-voltage cable has high water resistance and low-smoke halogen-free flame retardant performance, improves the safety use performance, and ensures the safety of electric power transportation.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a low smoke and zero halogen high tension cable of water-fast type.
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 of other types of power cable products in a dry environment, however, in the actual use process, no sufficient precaution measures are taken in the cable laying process or the operation environment of the laid cable is severe, for example, the cable is very easy to be soaked in water for a long time or the humidity is obviously higher, the cable is easy to be affected with water or damp, the insulating material of the cable body can gradually absorb the moisture in the environment, a large amount of water trees can be caused in the cable insulation for a long time under the action of an electric field, and the insulating high molecules are cracked due to the aging of the water trees. When the water tree in the insulation reaches a saturated state, the electrical and mechanical properties of the insulation are sharply reduced, and finally, the insulation breakdown of the cable is caused, so that the service life of the cable is greatly shortened.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's is not enough, and the technical problem that solve provides a water-fast type low smoke and zero halogen high tension cable, and it has high water proofness and low smoke and zero halogen fire behavior concurrently, improves safe handling performance, ensures electric power transportation's security.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
Water-fast low smoke and zero halogen high tension cable, include the cable core that three insulation core transposition constitute and cladding in proper order the outside high temperature glass fiber tape of cable core is around covering, fire-resistant mica tape layer, double-deck polyethylene water blocking layer, fire-resistant asbestos cloth layer and fire-retardant oversheath, double-deck polyethylene water blocking layer blocks water the outer crowded shaping of outer layer by inboard MDPE inner layer and the LDPE of outside and blocks water, the cable core with the space intussuseption of high temperature glass fiber tape between the covering is filled with inorganic mineral heat dissipation filler, insulation core includes the inner conductor and cladding in proper order the outside semiconductor copper foil inner shield layer, crosslinked polyethylene insulating layer, semiconductor copper foil outer shielding layer, metallic shield layer and insulating fire prevention area isolation layer of inner conductor.
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 flame-retardant outer sheath is an Ethylene Propylene Diene Monomer (EPDM) sheath.
Preferably, the metal shielding layer is a soft copper tape wrapping structure.
Preferably, the metal shielding layer is formed by spirally winding a tin-plated copper monofilament.
Preferably, the insulating fireproof belt isolation layer is of a double-layer bonding integrated structure of the inner layer of the crosslinked polyethylene resin and the outer layer of the mica belt.
Preferably, the thickness of the crosslinked polyethylene insulation layer is 3mm to 10 mm.
Preferably, the inorganic mineral heat dissipation filler is fire-proof mud.
The utility model has the advantages that:
1. adopt double-deck polyethylene water-blocking layer, for MDPE blocks water the double-deck coextrusion molding structure of inlayer and LDPE outer layer, the optimal design inlayer thickness proportion, if the cable meets in the long-term soaking under water or under the obvious higher operating mode condition of humidity, the water-blocking layer can effectually prevent that moisture from invading inside, the insulating electrical properties of protection cable, increase of service life.
2. Through at the outside cladding high temperature glass fiber tape of cable core around covering, fire-resistant mica tape layer, fire-resistant asbestos cloth layer and fire-retardant oversheath, form multilayer fire prevention and thermal-insulated effect, the time of extension heat-conduction to the cable core inside effectively reduces the temperature in the cable core, has ensured the safe normal operating of cable.
3. Adopt inorganic mineral heat dissipation filler for example fire prevention mud as the filler material, for preventing it from corroding to the metallic shield layer, at the outside cladding insulating fireproof belt isolation layer of inner conductor, to the inside better fire prevention heat-insulating effect that realizes of insulating sinle silk.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
Reference numerals: 1-insulating wire core, 2-high temperature glass fiber tape wrapping layer, 3-fire-resistant mica tape layer, 4-double-layer polyethylene water-blocking layer, 41-MDPE water-blocking inner layer, 42-LDPE water-blocking outer layer, 5-fire-resistant asbestos cloth layer, 6-fire-resistant outer sheath, 7-inner conductor, 8-semiconductor copper foil inner shielding layer, 9-cross-linked polyethylene insulating layer, 10-semiconductor copper foil outer shielding layer, 11-metal shielding layer, 12-insulating fireproof tape isolating layer and 13-inorganic mineral heat-dissipating filler.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model discloses water-fast type low smoke and zero halogen high tension cable, including the cable core that 1 transposition of three insulation core constitutes and cladding in proper order the outside high temperature glass fiber tape of cable core is around covering 2, fire-resistant mica tape layer 3, double-deck polyethylene water blocking layer 4, fire-resistant asbestos cloth layer 5 and fire-retardant oversheath 6, fire-retardant oversheath 6 is for example to adopt the EPT rubber sheath. The double-layer polyethylene water-blocking layer 4 is formed by co-extruding an MDPE water-blocking inner layer 41 on the inner side and an LDPE water-blocking outer layer 42 on the outer side, and further the thickness ratio of the MDPE water-blocking inner layer 41 to the LDPE water-blocking outer layer 42 is 1: 10-1: 12.
And an inorganic mineral heat dissipation filler 13 is filled in a space between the cable core and the high-temperature glass fiber tape wrapping layer 2, for example, the inorganic mineral heat dissipation filler 13 is fire-proof mud.
The insulated wire core 1 comprises an inner conductor 7, and a semiconductor copper foil inner shielding layer 8, a cross-linked polyethylene insulating layer 9, a semiconductor copper foil outer shielding layer 10, a metal shielding layer 11 and an insulated fireproof belt isolating layer 12 which are sequentially coated outside the inner conductor 7. The metal shielding layer 11 may be a soft copper tape wrapping structure, or may be formed by spirally winding a tin-plated copper monofilament. The insulating fireproof belt isolation layer 12 is of a double-layer bonding integrated structure of a crosslinked polyethylene resin inner layer and a mica belt outer layer. The thickness of the crosslinked polyethylene insulation layer 9 is preferably 3mm to 10 mm.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. Water-fast type low smoke and zero halogen high tension cable, characterized by: comprises a cable core formed by twisting three insulation wire cores (1), a high-temperature glass fiber tape wrapping layer (2), a fire-resistant mica tape layer (3), a double-layer polyethylene water-blocking layer (4), a fire-resistant asbestos cloth layer (5) and a flame-retardant outer sheath (6) which are sequentially coated outside the cable core, the double-layer polyethylene water-resistant layer (4) is formed by the inner MDPE water-resistant layer (41) at the inner side and the outer LDPE water-resistant layer (42) at the outer side in a co-extrusion way, inorganic mineral heat dissipation filler (13) is filled in the space between the cable core and the high-temperature glass fiber tape wrapping layer (2), the insulated wire core (1) comprises an inner conductor (7) and a semiconductor copper foil inner shielding layer (8), a cross-linked polyethylene insulating layer (9), a semiconductor copper foil outer shielding layer (10), a metal shielding layer (11) and an insulated fireproof belt isolating layer (12) which are sequentially coated outside the inner conductor (7).
2. The water-resistant low-smoke zero-halogen high-voltage cable according to claim 1, characterized in that: the thickness ratio of the MDPE water-blocking inner layer (41) to the LDPE water-blocking outer layer (42) is 1:10 to 1: 12.
3. The water-resistant low-smoke zero-halogen high-voltage cable according to claim 1, characterized in that: the flame-retardant outer sheath (6) is an ethylene propylene diene monomer rubber sheath.
4. The water-resistant low-smoke zero-halogen high-voltage cable according to claim 1, characterized in that: the metal shielding layer (11) is of a soft copper tape wrapping structure.
5. The water-resistant low-smoke zero-halogen high-voltage cable according to claim 1, characterized in that: the metal shielding layer (11) is formed by spirally winding a tin-plated copper monofilament.
6. The water-resistant low-smoke zero-halogen high-voltage cable according to claim 1, characterized in that: the insulating fireproof belt isolation layer (12) is of a double-layer bonding integrated structure of a crosslinked polyethylene resin inner layer and a mica belt outer layer.
7. The water-resistant low-smoke zero-halogen high-voltage cable according to claim 1, characterized in that: the thickness of the crosslinked polyethylene insulating layer (9) is 3mm to 10 mm.
8. The water-resistant low-smoke zero-halogen high-voltage cable according to claim 1, characterized in that: the inorganic mineral heat dissipation filler (13) is fireproof mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888980.8U CN210692168U (en) | 2019-11-05 | 2019-11-05 | Water-resistant low-smoke halogen-free high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888980.8U CN210692168U (en) | 2019-11-05 | 2019-11-05 | Water-resistant low-smoke halogen-free high-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210692168U true CN210692168U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921888980.8U Expired - Fee Related CN210692168U (en) | 2019-11-05 | 2019-11-05 | Water-resistant low-smoke halogen-free high-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210692168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271020A (en) * | 2020-11-03 | 2021-01-26 | 安徽电缆股份有限公司 | Control cable and preparation process thereof |
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2019
- 2019-11-05 CN CN201921888980.8U patent/CN210692168U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271020A (en) * | 2020-11-03 | 2021-01-26 | 安徽电缆股份有限公司 | Control cable and preparation process thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 |