CN117894513A - Polypropylene insulation looped network power cable - Google Patents
Polypropylene insulation looped network power cable Download PDFInfo
- Publication number
- CN117894513A CN117894513A CN202410159530.4A CN202410159530A CN117894513A CN 117894513 A CN117894513 A CN 117894513A CN 202410159530 A CN202410159530 A CN 202410159530A CN 117894513 A CN117894513 A CN 117894513A
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- Prior art keywords
- layer
- wire core
- shielding layer
- cable
- network power
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- 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.)
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- -1 Polypropylene Polymers 0.000 title claims abstract description 28
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 27
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 27
- 238000009413 insulation Methods 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 26
- 239000004033 plastic Substances 0.000 claims abstract description 19
- 229920003023 plastic Polymers 0.000 claims abstract description 19
- 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 11
- 239000003063 flame retardant Substances 0.000 claims abstract description 11
- 239000002390 adhesive tape Substances 0.000 claims abstract description 9
- 239000003365 glass fiber Substances 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 238000005524 ceramic coating Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000003878 thermal aging Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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 invention belongs to the technical field of power cables, in particular to a polypropylene insulation ring network power cable, which comprises a cable; the cable is characterized in that an outer sheath is arranged at the outermost side of the cable, a conductive wire core is arranged at the innermost side of the cable, an oxygen-isolation flame-retardant layer is arranged at the lower layer of the outer sheath, a glass fiber adhesive tape is arranged at the lower layer of the oxygen-isolation flame-retardant layer, an inner sheath is arranged at the lower layer of the glass fiber adhesive tape, and an aluminum-plastic composite belt is arranged at the lower layer of the inner sheath; the design of the AC 35kV ring network power cable for urban rail transit is likely to consider the environment-friendly requirement and the recoverability of the life cycle, and the polypropylene insulating material has the advantages of degradability, high temperature resistance, high current carrying capacity (the working temperature can reach 105 ℃), and short production cycle.
Description
Technical Field
The invention relates to the technical field of power cables, in particular to a polypropylene insulation ring network power cable.
Background
Rail traffic refers to a type of vehicle or transportation system in which an operating vehicle needs to travel on a particular track. The most typical rail traffic is a railway system consisting of conventional trains and standard railroads. Along with the diversified development of train and railway technologies, rail traffic is of more and more types, and is widely applied to urban public transportation in medium and short distances as well as land transportation in long distances, and a traffic power cable is an aorta connected with a power supply system;
At present, the alternating current 35kV power cables in the field of looped network power supply lines in urban rail transit power supply systems are all crosslinked polyethylene insulated cables, and the production and manufacture of the crosslinked polyethylene insulated cables all have the problems of high energy consumption, long period, production of crosslinked byproducts with polluted water resources, incapability of recycling insulation after the cables reach service life and the like.
Disclosure of Invention
The invention aims to provide a polypropylene insulation ring network power cable which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a polypropylene insulation ring network power cable, comprising a cable; an outer sheath is arranged at the outermost side of the cable, a conductive wire core is arranged at the innermost side of the cable, an oxygen-isolation flame-retardant layer is arranged at the outer sheath downwards, a glass fiber adhesive tape is arranged at the next layer of the oxygen-isolation flame-retardant layer, an inner sheath is arranged at the next layer of the glass fiber-limiting adhesive tape, and an aluminum-plastic composite belt is arranged at the next layer of the inner sheath;
The next layer of plastic-aluminum composite tape is provided with the package water blocking tape, the next layer of package water blocking tape is provided with the inner shield layer, the next layer of inner shield layer is provided with the copper wire shielding layer, the next layer of copper wire shielding layer is provided with the conductor electric tape, the next layer of conductor electric tape is provided with insulating shield cover, insulating shield cover's next layer is provided with insulating shield layer, insulating shield layer's next layer is provided with the sinle silk shielding layer, sinle silk shielding layer cladding is in the outside of conductive core.
Preferably, the outer side of the outer sheath is coated with an antifreezing ceramic coating; the diameter of the insulating shielding layer occupies two fifths of the diameter of the cable, and the conductive wire core and the wire core shielding layer occupy one fifth of the diameter of the cable.
Preferably, the inner shielding layer, the insulating shielding layer and the wire core shielding layer are all polypropylene insulating layers, and the polypropylene insulating layers are inwards coated through extrusion.
Preferably, the outer sheath and the inner sheath are low smoke zero halogen sheaths, the inner layers of the outer sheath and the inner sheath wrap the mica tape layer, and an armor layer is arranged outside the mica tape layer.
Preferably, the diameter of the copper wire in the copper wire winding layer is 2.53mm-4.1mm of monofilament, and the monofilament is wrapped on the outer side of the conductor electric tape through winding.
Preferably, the aluminum-plastic composite belt is a longitudinally-wrapped aluminum-plastic composite belt, the outer side of the aluminum-plastic composite belt is provided with equidistant scales, positioning holes are formed along the scales at equal intervals, composite rib belts are connected in the positioning holes in a penetrating way, and the composite rib belts are woven in the positioning holes in a staggered way to form a netlike covering layer.
Preferably, the main body of the conductive wire core is an enamelled copper wire, the diameter of the conductive wire core is between 0.55mm and 1.5mm, an aluminum foil layer is arranged between the wire core shielding layer and the conductive wire core, and the thickness of the aluminum foil layer is between 0.5um and 0.7 um.
Compared with the prior art, the invention has the beneficial effects that:
1) The scheme is mainly used for the polypropylene insulation alternating current 35kV ring network power cable for urban rail transit, which has the environment-friendly requirement and the recyclable requirement of the service life cycle of the cable; the design of the AC 35kV ring network power cable for urban rail transit is likely to consider the environment-friendly requirement and the recycling property of the life cycle;
2) The scheme adopts the polypropylene insulating material and has the advantages of degradability, high temperature resistance, high current carrying capacity (the working temperature can reach 105 ℃), and short production period. Meanwhile, the polypropylene insulating material has the characteristic of plasticization, can be recycled, and has great advantages in urban rail transit construction;
The cable insulating material is a green environment-friendly polypropylene insulating material, the material can be recycled, the temperature resistance level of the insulating material is high, when the material is used for insulating a cable, the working temperature can reach 105 ℃, and the current-carrying capacity of the cable can be improved;
3) The cable is provided with a metal shielding layer, and the metal shielding layer acts through capacitance current in normal operation; when the system is short-circuited, the system is used as a channel of short-circuit current and also plays a role in shielding an electric field; the cable is provided with a wrapping water blocking belt and a longitudinal wrapping aluminum-plastic composite belt as radial water blocking layers, and the radial water blocking test can meet the water soaking test of water pressure of 1MPa and 72 h.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention.
In the figure: 10 cables, 101 outer jackets, 102 oxygen-isolation flame-retardant layers, 103 glass fiber adhesive tapes, 104 inner jackets, 105 aluminum-plastic composite belts, 106 wrapped water-blocking belts, 107 inner shielding layers, 108 copper wire winding layers, 109 conductor electric belts, 110 insulating shielding sleeves, 111 insulating shielding layers, 112 wire core shielding layers and 113 conductive wire cores.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Examples:
referring to fig. 1-2, the invention provides a polypropylene insulation ring network power cable technical scheme: including a cable 10; the outermost side of the cable 10 is provided with an outer sheath 101, the innermost side of the cable 10 is provided with a conductive wire core 113, and the outer sheath 101 is provided with an oxygen-insulating flame-retardant layer 102 downwards;
Further, a glass fiber adhesive tape 103 is arranged on the next layer of the oxygen-isolation flame-retardant layer 102, an inner sheath 104 is arranged on the next layer of the glass fiber adhesive tape 103, and an aluminum-plastic composite belt 105 is arranged on the next layer of the inner sheath 104;
Further, a wrapping water-blocking tape 106 is arranged on the next layer of the aluminum-plastic composite tape 105, an inner shielding layer 107 is arranged on the next layer of the wrapping water-blocking tape 106, a copper wire shielding layer 108 is arranged on the next layer of the inner shielding layer 107, and a conductor electric tape 109 is arranged on the next layer of the copper wire shielding layer 108;
Further, an insulating shielding sleeve 110 is arranged on the next layer of the conductor electric belt 109, an insulating shielding layer 111 is arranged on the next layer of the insulating shielding sleeve 110, a wire core shielding layer 112 is arranged on the next layer of the insulating shielding layer 111, the wire core shielding layer 112 is formed by winding copper wires, and the wire core shielding layer 112 is coated on the outer side of the conductive wire core 113;
Further, the outer side of the outer sheath 101 is coated with an anti-freezing ceramic coating; the diameter of the insulating shielding layer 111 occupies two fifths of the diameter of the cable 10, and the conductive core 113 and the core shielding layer 112 occupy one fifth of the diameter of the cable 10;
Furthermore, the coated anti-freezing ceramic coating (namely the nano coating) can isolate the air and prevent external water vapor from immersing into the cable coating, and the anti-freezing ceramic particles have extremely strong capture capability on oxygen atoms, oxygen free radicals which promote the spoilage of substances, alkane molecules which generate other peculiar smells and the like, so that the anti-freezing ceramic coating has an anti-corrosion and antibacterial function, and the nano material has extremely strong adsorption capability and greatly increases the specific surface area along with the reduction of particle size. The nano particles have strong capability of capturing oxygen atoms and oxygen free radical molecules, so that the erosion of moisture to the cable 10 in the natural environment can be greatly reduced, and the service life of the cable is prolonged;
further, the inner shielding layer 107, the insulating shielding layer 111 and the wire core shielding layer 112 are all polypropylene insulating layers, and the polypropylene insulating layers are coated inwards by extrusion;
Further, the outer sheath 101 and the inner sheath 104 are low smoke halogen-free sheaths, the inner layers of the outer sheath 101 and the inner sheath 104 wrap the mica tape layer, and an armor layer is arranged outside the mica tape layer;
furthermore, during processing, halogen-free, nontoxic flame retardant and inorganic whisker reinforcing material are added into EVA or resin mixed by EVA and PE as base materials, and proper auxiliary agents are added, so that the low-smoke halogen-free sheath has good mechanical property, processing property and excellent flame retardant property, and simultaneously has excellent thermal deformation, thermal aging and thermal shock property, the prepared cable has high safety and reliability, and the protection capability of the cable 10 in the face of thermal shock, thermal deformation and thermal aging is enhanced;
further, the diameter of the copper wire in the copper wire winding layer 108 is 2.53mm-4.1mm of monofilament, and the monofilament is coated on the outer side of the conductor electric tape 109 by winding;
Further, the aluminum-plastic composite belt 105 is a longitudinally-wrapped aluminum-plastic composite belt, the outer side of the aluminum-plastic composite belt is provided with equidistant scales, positioning holes are formed along the scales at equal intervals, composite rib belts are connected in the positioning holes in a penetrating way, and the composite rib belts are woven in the positioning holes in a staggered way to form a netlike covering layer; the wrapped water blocking tape 106 and the aluminum-plastic composite tape 105 arranged on the cable 10 are used as radial water blocking layers, and the radial water blocking test can meet the water soaking test of water pressure of 1MPa and 72 h;
further, the main body of the conductive wire core 113 is an enamelled copper wire, the diameter of the conductive wire core 113 is between 0.55mm and 1.5mm, an aluminum foil layer is arranged between the wire core shielding layer 112 and the conductive wire core 113, and the thickness of the aluminum foil layer is between 0.5um and 0.7 um; the aluminum foil layer is aluminum foil paper, and shielding performance to electromagnetic fields can be enhanced through reflection and absorption;
Further, the conductive wire core 113 comprises a central wire core and a twisted wire core, the conductive wire core 113 is formed by twisting the central wire core and the twisted wire core, the twisted wire core is uniformly wound with a plurality of enamelled wires, and the twisting distance is 1.5mm+/0.2mm;
Furthermore, the invention adopts polypropylene insulating material, and has the advantages of degradability, high temperature resistance, high current carrying capacity (the working temperature can reach 105 ℃), short production period and the like. Meanwhile, the polypropylene insulating material has the characteristic of plasticization, can be recycled, and has great advantages in urban rail transit construction.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A polypropylene insulation ring network power cable, which comprises a cable (10) and is characterized in that,
An outer sheath (101) is arranged at the outermost side of the cable (10), a conductive wire core (113) is arranged at the innermost side of the cable (10), an oxygen-isolation flame-retardant layer (102) is arranged at the lower layer of the outer sheath (101), a glass fiber adhesive tape (103) is arranged at the lower layer of the oxygen-isolation flame-retardant layer (102), an inner sheath (104) is arranged at the lower layer of the glass fiber adhesive tape (103), and an aluminum-plastic composite belt (105) is arranged at the lower layer of the inner sheath (104);
The aluminum-plastic composite belt (105) is characterized in that a wrapping water blocking belt (106) is arranged on the next layer of the aluminum-plastic composite belt (105), an inner shielding layer (107) is arranged on the next layer of the wrapping water blocking belt (106), a copper wire shielding layer (108) is arranged on the next layer of the inner shielding layer (107), a conductor electric belt (109) is arranged on the next layer of the copper wire shielding layer (108), an insulating shielding sleeve (110) is arranged on the next layer of the conductor electric belt (109), an insulating shielding layer (111) is arranged on the next layer of the insulating shielding sleeve (110), a wire core shielding layer (112) is arranged on the next layer of the insulating shielding layer (111), and the wire core shielding layer (112) is coated on the outer side of a conductive wire core (113).
2. A polypropylene insulation ring network power cable according to claim 1, wherein: an antifreezing ceramic coating is coated on the outer side of the outer sheath (101); the diameter of the insulating shielding layer (111) occupies two fifths of the diameter of the cable (10), and the conductive wire core (113) and the wire core shielding layer (112) occupy one fifth of the diameter of the cable (10).
3. A polypropylene insulation ring network power cable according to claim 1, wherein: the inner shielding layer (107), the insulating shielding layer (111) and the wire core shielding layer (112) are all polypropylene insulating layers, and the polypropylene insulating layers are inwards coated through extrusion.
4. A polypropylene insulation ring network power cable according to claim 1, wherein: the outer sheath (101) and the inner sheath (104) are low-smoke halogen-free sheaths, the mica tape layer is wrapped by the inner layers of the outer sheath (101) and the inner sheath (104), and an armor layer is arranged outside the mica tape layer.
5. A polypropylene insulation ring network power cable according to claim 1, wherein: the diameter of the copper wire in the copper wire winding layer (108) is 2.53-4.1 mm of monofilament, and the monofilament is coated on the outer side of the conductor electric belt (109) through winding.
6. A polypropylene insulation ring network power cable according to claim 1, wherein: the aluminum-plastic composite belt (105) is a longitudinally-wrapped aluminum-plastic composite belt, equidistant scales are arranged on the outer side of the aluminum-plastic composite belt, positioning holes are formed along the scales at equal intervals, composite rib belts are connected in the positioning holes in a penetrating mode, and the composite rib belts are woven in the positioning holes in a staggered mode to form a net-shaped covering layer.
7. A polypropylene insulation ring network power cable according to claim 1, wherein: the main body of the conductive wire core (113) is an enamelled copper wire, the diameter of the conductive wire core (113) is between 0.55mm and 1.5mm, an aluminum foil layer is arranged between the wire core shielding layer (112) and the conductive wire core (113), and the thickness of the aluminum foil layer is between 0.5um and 0.7 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410159530.4A CN117894513A (en) | 2024-02-04 | 2024-02-04 | Polypropylene insulation looped network power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410159530.4A CN117894513A (en) | 2024-02-04 | 2024-02-04 | Polypropylene insulation looped network power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117894513A true CN117894513A (en) | 2024-04-16 |
Family
ID=90642750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410159530.4A Pending CN117894513A (en) | 2024-02-04 | 2024-02-04 | Polypropylene insulation looped network power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117894513A (en) |
-
2024
- 2024-02-04 CN CN202410159530.4A patent/CN117894513A/en active Pending
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