CN111180131A - Heat-resisting overhead stranded wire for power transmission line - Google Patents

Heat-resisting overhead stranded wire for power transmission line Download PDF

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Publication number
CN111180131A
CN111180131A CN201811348557.9A CN201811348557A CN111180131A CN 111180131 A CN111180131 A CN 111180131A CN 201811348557 A CN201811348557 A CN 201811348557A CN 111180131 A CN111180131 A CN 111180131A
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CN
China
Prior art keywords
layer
heat
insulating
conductor
stranded wire
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Pending
Application number
CN201811348557.9A
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Chinese (zh)
Inventor
鞠晓彬
尹平升
周田田
孟祥龙
李�根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian Huihang Technology Development Co ltd
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Dalian Huihang Technology Development Co ltd
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Filing date
Publication date
Application filed by Dalian Huihang Technology Development Co ltd filed Critical Dalian Huihang Technology Development Co ltd
Priority to CN201811348557.9A priority Critical patent/CN111180131A/en
Publication of CN111180131A publication Critical patent/CN111180131A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H01B7/0216—Two layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/008—Power cables for overhead application
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
    • 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 invention discloses a heat-resistant overhead stranded wire for a power transmission line, which comprises a conductor, wherein the conductor consists of a steel core and an aluminum alloy stranded wire spirally wound on the outer side of the steel core, an insulating inner sleeve layer wraps the outer side of the conductor, an insulating outer sleeve layer is arranged on the outer side of the insulating inner sleeve layer, a copper wire braided shielding layer is arranged on the outer side of the insulating outer sleeve layer, a heat-insulating filling layer is arranged on the outer side of the copper wire braided shielding layer, asbestos is filled in the heat-insulating filling layer, a polyethylene waterproof layer is arranged on the outer side of the heat-insulating filling layer, a ceramic silica gel fireproof layer is arranged on the outer side of the polyethylene waterproof layer, and wear-resistant bulges are uniformly distributed on the outer wall. The invention has simple structure and low production cost, not only has the characteristics of high tensile and compressive strength, water resistance, wear resistance and flame retardance, but also resists high temperature, can be used in various high-temperature environments, and has strong applicability and good use effect.

Description

Heat-resisting overhead stranded wire for power transmission line
Technical Field
The invention relates to the technical field of overhead stranded wires, in particular to a heat-resistant overhead stranded wire for a power transmission line.
Background
The overhead stranded wire is also called an overhead conductor, and is a main bare wire and used for overhead transmission of power lines. Because the overhead stranded wire is mostly used for conveying large current, the size bucket is large, the nominal section is generally more than 10 millimeters, and the maximum size reaches hundreds or even thousands of square millimeters. The existing overhead stranded wire is poor in heat resistance, easy to age after being exposed to high-temperature sunlight for a long time, short in service life, incapable of being used in a high-temperature environment, narrow in application range, free of the characteristics of good tensile strength, good compression strength, good water resistance, good flame retardance and good wear resistance, and poor in service performance.
Disclosure of Invention
The invention aims to provide a heat-resistant overhead stranded wire for a power transmission line, which solves the problems that the overhead stranded wire in the prior art is poor in heat resistance, easy to age after being exposed to high-temperature sunlight for a long time, short in service life, incapable of being used in a high-temperature environment, narrow in application range, free of good tensile and compressive strength, waterproof, flame-retardant and wear-resistant characteristics, poor in service performance and the like.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a heat-resisting overhead stranded conductor for power transmission line, includes the conductor, the conductor comprises steel core and the aluminum alloy stranded conductor of spiral winding in the steel core outside, insulating inner jacket layer is being wrapped up in the outside of conductor, the outside on insulating inner jacket layer is provided with insulating overcoat layer, the outside on insulating overcoat layer is provided with the copper wire and weaves the shielding layer, the outside that the shielding layer was woven to the copper wire is provided with thermal-insulated filling layer, the intussuseption of thermal-insulated filling layer is filled with the asbestos, the outside on thermal-insulated filling layer is provided with the polyethylene waterproof layer, the outside of polyethylene waterproof layer is provided with ceramic silica gel flame retardant coating, be provided with evenly distributed's wear-resisting arch on the outer.
Preferably, a rubber layer is arranged on the outer wall of the steel core.
Preferably, a drying agent is filled in a connecting gap between the aluminum alloy stranded wire and the steel core.
Preferably, a cooling object is filled between the insulating inner sleeve layer and the insulating outer sleeve layer.
Preferably, the wear-resistant protrusions are of hemispherical structures, and the outer walls of the wear-resistant protrusions are coated with anticorrosive paint layers.
Compared with the prior art, the invention has the beneficial effects that: the invention, the conductor is made up of steel core and aluminum alloy stranded wire that the spiral winds the outside of steel core, adopt the overhead stranded wire of this kind of structure, not merely the conductivity is good, and the intensity is high, tensile resistance, compression resistance, long service life, the drier filled in the connecting gap of aluminum alloy stranded wire and steel core, can guarantee the drying of the inside of conductor, prevent the conductor inside from receiving the corruption, the insulating inner jacket layer and insulating outer jacket layer set up outside the conductor, the insulating nature is good, can avoid the emergence of the electric leakage phenomenon effectively, the cooling thing filled between insulating inner jacket layer and insulating outer jacket layer, can absorb the heat that reduces the conductor and produces while working in time, prevent the internal temperature of the overhead stranded wire from rising too fast, the copper wire that sets up outside insulating outer jacket layer weaves the shielding layer, can shield the interference of the external electromagnetism, guarantee the normal work of the conductor, the insulating filling layer that sets up outside the copper wire, the high temperature resistance of this built on stilts stranded conductor has been improved, be applicable to and use under various high temperature environment, it is difficult for ageing, the polyethylene waterproof layer that sets up in the thermal-insulated filling layer outside, can effectually prevent rainwater infiltration, play waterproof effect, the ceramic silica gel flame retardant coating that sets up in the polyethylene waterproof layer outside, can play fire-retardant effect, prevent built on stilts stranded conductor from catching fire, the safe power supply of built on stilts stranded conductor has been ensured, wear-resisting arch in the setting of ceramic silica gel flame retardant coating outside, the in-process built on stilts stranded conductor wearing and tearing damage of transportation can be avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a conductor structure according to the present invention;
FIG. 3 is a cross-sectional view of the insulating fill of the present invention;
fig. 4 is a schematic view of the structure of the wear-resistant protrusion of the present invention.
In the figure: the cable comprises a conductor 1, an insulating inner sleeve layer 2, a cooling object 3, an insulating outer sleeve layer 4, a copper wire braided shielding layer 5, a heat insulation filling layer 6, a polyethylene waterproof layer 7, a ceramic silica gel fireproof layer 8, a wear-resistant bulge 9, an aluminum alloy stranded wire 10, a steel core 11, a rubber layer 12, a drying agent 13, asbestos 14 and an anticorrosive coating layer 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, in the embodiment of the present invention, a heat-resistant overhead stranded wire for a power transmission line includes a conductor 1, the conductor 1 is composed of a steel core 11 and an aluminum alloy stranded wire 10 spirally wound outside the steel core 11, the overhead stranded wire adopting such a structure has good electrical conductivity, high strength, tensile strength, compressive strength, and long service life, an insulating inner jacket layer 2 is wrapped outside the conductor 1, an insulating outer jacket layer 4 is disposed outside the insulating inner jacket layer 2, the arrangement of the insulating inner jacket layer 2 and the insulating outer jacket layer 4 improves the insulation performance of the overhead stranded wire, and can effectively avoid the occurrence of an electric leakage phenomenon, a copper wire braided shielding layer 5 is disposed outside the insulating inner jacket layer 4, the copper wire braided shielding layer 5 can shield external electromagnetic interference, and ensure the normal operation of the conductor 1, and a heat-insulating filling layer 6 is disposed outside the copper wire braided shielding layer 5, the heat insulation filling layer 6 is filled with asbestos 14, the asbestos 14 has a good heat insulation effect, the high temperature resistance of the aerial stranded wire is improved, the aerial stranded wire is suitable for being used in various high-temperature environments and is not easy to age, the polyethylene waterproof layer 7 is arranged on the outer side of the heat insulation filling layer 6, the polyethylene waterproof layer 7 can effectively prevent rainwater from permeating and plays a waterproof role, the ceramic silica gel fireproof layer 8 is arranged on the outer side of the polyethylene waterproof layer 7, the ceramic silica gel fireproof layer 8 can play a flame-retardant role to prevent the aerial stranded wire from firing, the safe power supply of the aerial stranded wire is ensured, the wear-resistant protrusions 9 which are uniformly distributed are arranged on the outer wall of the ceramic silica gel fireproof layer 8, the abrasion and the damage of the aerial stranded wire in the transportation process can be avoided, the rubber layer 12 is arranged on the outer wall of the steel core 11 and the aluminum alloy stranded wire 10, the connecting gap between the aluminum alloy stranded wire, can ensure the inside drying of conductor 1, prevent that 1 inside of conductor from receiving the corruption, it has cooling object 3 to fill between insulating inner jacket layer 2 and the insulating outer jacket layer 4, the heat that the absorption that cooling object 3 can be timely produced when reducing conductor 1 during operation, prevent that the inside temperature of overhead stranded conductor from rising too fast, wear-resisting arch 9 is hemispherical structure, it has anticorrosive coating layer 15 to coat on wear-resisting arch 9's the outer wall, anticorrosive coating layer 15 can prevent that wear-resisting arch 9 from being corroded.
The working principle of the invention is as follows: when the overhead twisted wire is used, the conductor 1 consists of the steel core 11 and the aluminum alloy twisted wire 10 spirally wound on the outer side of the steel core 11, the overhead twisted wire adopting the structure has good electric conductivity, high strength, tensile strength, compression resistance and long service life, the drying agent 13 filled in the connection gap between the aluminum alloy twisted wire 10 and the steel core 11 can ensure the drying inside the conductor 1, the insulating inner sleeve layer 2 and the insulating outer sleeve layer 4 arranged on the outer side of the conductor 1 are prevented from being corroded inside the conductor 1, the insulating property is good, the electric leakage phenomenon can be effectively avoided, the cooling object 3 filled between the insulating inner sleeve layer 2 and the insulating outer sleeve layer 4 can timely absorb and reduce the heat generated when the conductor 1 works, the temperature inside the overhead twisted wire is prevented from rising too fast, the copper wire woven shielding layer 5 on the outer side of the insulating outer sleeve layer 4 can shield the interference of external electromagnetism, and the normal work of the conductor, the heat-insulating filling layer 6 outside the copper wire braided shielding layer 5 has improved the high temperature resistance of this overhead stranded wire, be applicable to and use under various high temperature environment, it is difficult for ageing, the polyethylene waterproof layer 7 outside the heat-insulating filling layer 6, can effectually prevent the rainwater infiltration, play waterproof effect, the ceramic silica gel flame retardant coating 8 in the polyethylene waterproof layer 7 outside, can play fire-retardant effect, prevent that the overhead stranded wire from catching fire, the safe power supply of overhead stranded wire has been ensured, wear-resisting arch 9 in the 8 outsides of ceramic silica gel flame retardant coating, can avoid the in-process overhead stranded wire wearing and tearing of transportation to damage.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a heat-resisting overhead stranded conductor for transmission line, includes conductor (1), its characterized in that: conductor (1) is by steel core (11) and spiral winding constitute in aluminum alloy stranded conductor (10) in steel core (11) outside, insulating inner jacket layer (2) is being wrapped up in the outside of conductor (1), the outside of insulating inner jacket layer (2) is provided with insulating outer jacket layer (4), the outside of insulating outer jacket layer (4) is provided with the copper wire and weaves shielding layer (5), the outside that shielding layer (5) was woven to the copper wire is provided with thermal-insulated filling layer (6), thermal-insulated filling layer (6) intussuseption is filled with asbestos (14), the outside of thermal-insulated filling layer (6) is provided with polyethylene waterproof layer (7), the outside of polyethylene waterproof layer (7) is provided with ceramic silica gel flame retardant coating (8).
2. The heat-resistant overhead stranded wire for the transmission line according to claim 1, characterized in that: and a rubber layer (12) is arranged on the outer wall of the steel core (11).
3. The heat-resistant overhead stranded wire for the transmission line according to claim 1, characterized in that: and a drying agent (13) is filled in a connecting gap between the aluminum alloy stranded wire (10) and the steel core (11).
4. The heat-resistant overhead stranded wire for the transmission line according to claim 1, characterized in that: and a cooling object (3) is filled between the insulating inner sleeve layer (2) and the insulating outer sleeve layer (4).
5. The heat-resistant overhead stranded wire for the transmission line according to claim 1, characterized in that: the wear-resistant protrusions (9) are of hemispherical structures, and the outer walls of the wear-resistant protrusions (9) are coated with anticorrosive paint layers (15).
6. The heat-resistant overhead stranded wire for the transmission line according to claim 1, characterized in that: wear-resisting bulges (9) which are uniformly distributed are arranged on the outer wall of the ceramic silica gel fireproof layer (8).
CN201811348557.9A 2018-11-13 2018-11-13 Heat-resisting overhead stranded wire for power transmission line Pending CN111180131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811348557.9A CN111180131A (en) 2018-11-13 2018-11-13 Heat-resisting overhead stranded wire for power transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811348557.9A CN111180131A (en) 2018-11-13 2018-11-13 Heat-resisting overhead stranded wire for power transmission line

Publications (1)

Publication Number Publication Date
CN111180131A true CN111180131A (en) 2020-05-19

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CN (1) CN111180131A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111681821A (en) * 2020-06-23 2020-09-18 尹玉兰 High and low temperature resistant signal cable made of composite material
CN114496389A (en) * 2022-02-25 2022-05-13 江苏南瑞银龙电缆有限公司 High-conductivity aluminum stranded wire for extra-high voltage power transmission and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111681821A (en) * 2020-06-23 2020-09-18 尹玉兰 High and low temperature resistant signal cable made of composite material
CN114496389A (en) * 2022-02-25 2022-05-13 江苏南瑞银龙电缆有限公司 High-conductivity aluminum stranded wire for extra-high voltage power transmission and preparation method thereof
CN114496389B (en) * 2022-02-25 2024-01-05 江苏南瑞银龙电缆有限公司 High-conductivity aluminum stranded wire for extra-high voltage transmission and preparation method thereof

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Application publication date: 20200519