CN111785426A - Low-creep aluminum-clad overhead ground wire and preparation method thereof - Google Patents
Low-creep aluminum-clad overhead ground wire and preparation method thereof Download PDFInfo
- Publication number
- CN111785426A CN111785426A CN202010656045.XA CN202010656045A CN111785426A CN 111785426 A CN111785426 A CN 111785426A CN 202010656045 A CN202010656045 A CN 202010656045A CN 111785426 A CN111785426 A CN 111785426A
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- CN
- China
- Prior art keywords
- rubber strip
- rubber
- overhead ground
- clad
- creep
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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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Classifications
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- 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
- H01B9/00—Power cables
- H01B9/005—Power cables including optical transmission elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/22—Arrangements of earthing wires suspended between mastheads
Abstract
The invention provides a low-creep aluminum-clad overhead ground wire and a preparation method thereof, which relate to the technical field of overhead ground wires and comprise an inner stranded wire layer formed by aluminum-clad steel wires and an outer stranded wire layer stranded on the surfaces of the aluminum-clad steel wires, and are characterized in that: the optical fiber cable is inserted into the inner stranded wire layer, the conductive rubber strips which are symmetrical up and down are bonded on the surface of the outer stranded wire layer, the vertical section of each rubber strip is U-shaped, and the side faces of the rubber strips are connected with the outer stranded wire layer. Pressing grooves are uniformly extruded on the rubber strips, so that the extruded part can be in contact with an outer stranded wire layer of the lead, and the extruded part can be coated with an adhesive to be adhered to the lead, so that the rubber strips are stably adhered to the outer wall of the lead; divide into a plurality of part with the rubber strip through the indent, the rubber strip between two adjacent indents all not with the wire contact, when the wire creep trend appears, the elasticity of rubber can be with the wire to the original position pull back, reduce the creep.
Description
Technical Field
The invention relates to the technical field of overhead ground wires, in particular to a low-creep aluminum-clad overhead ground wire and a preparation method thereof.
Background
The overhead ground wire is also called a lightning conductor and is used for protecting the overhead transmission line from lightning attack, and the overhead ground wire is erected above a protected wire. When thundercloud discharges to the ground above the line, the lightning channel easily hits the overhead ground wire firstly, so that lightning current enters the ground to protect the normal power transmission of the lead.
The overhead ground wire is long in building time and generates creep deformation, namely the common phenomenon of vertical arc occurs, the amplitude of the vertical arc is gradually increased along with the time, the quality of the overhead ground wire is influenced, the conditions such as fracture occur easily, and therefore the low-creep overhead ground wire is required to be provided, and the service life of the overhead ground wire is prolonged.
Disclosure of Invention
The invention aims to provide a low-creep aluminum-clad overhead ground wire and a preparation method thereof, so as to solve the technical problems.
In order to solve the technical problems, the invention adopts the following technical scheme: a low creep aluminum-clad overhead ground wire and a preparation method thereof, comprising an inner stranded wire layer formed by aluminum-clad steel wires and an outer stranded wire layer stranded on the surface of the aluminum-clad steel wires, and is characterized in that: the optical fiber cable is inserted into the inner stranded wire layer, the conductive rubber strips which are symmetrical up and down are bonded on the surface of the outer stranded wire layer, the vertical section of each rubber strip is U-shaped, and the side faces of the rubber strips are connected with the outer stranded wire layer.
In the low-creep aluminum-clad overhead ground wire, the distance between the tops of the two sides of the rubber strip is matched with the diameter of the outer stranded wire layer of the lead.
The low-creep aluminum-clad overhead ground wire and the preparation method thereof comprise the following preparation procedures,
s1, extruding a rubber strip with a U-shaped section by a rubber extruder;
s2, sleeving the extruded rubber strip on a matched round rod for transmission, and extruding the outer wall of the rubber strip in transmission to generate equidistant pressing grooves on the outer wall of the rubber strip, wherein the pressing grooves are inwards recessed from the U-shaped bottom of the rubber strip;
s3, punching a part of the rubber strip obtained by the processing in the S2, wherein the punched holes are respectively positioned at the U-shaped bottom and the side wall close to the bottom of the rubber strip;
s4, stretching the wire which is twisted with the outer twisted wire layer, and respectively coiling the rubber strips which are punched and not punched in the S3 on two sides of the wire;
and S5, stretching the rubber strip and the lead wire in the same direction at the same stretching speed, coating rubber adhesive on the side wall of the rubber strip stretched out from the reel, and pressing the rubber strip coated with the adhesive on the outer walls of the two sides of the lead wire.
In the low-creep aluminum-clad overhead ground wire and the preparation method thereof, the distance between the medium-pressure grooves of S2 is 5-10 mm.
In the low-creep aluminum-clad overhead ground wire and the preparation method thereof, a gap exists between the U-shaped bottom of the rubber strip in the S5 and the wire.
When the low-creep aluminum-clad overhead ground wire is installed, the perforated rubber strip is positioned below the lead.
The invention has the beneficial effects that: pressing grooves are uniformly extruded on the rubber strips, so that the extruded part can be in contact with an outer stranded wire layer of the lead, and the extruded part can be coated with an adhesive to be adhered to the lead, so that the rubber strips are stably adhered to the outer wall of the lead; the rubber strip is divided into a plurality of parts through the pressing grooves, the rubber strip between two adjacent pressing grooves is not contacted with the lead, and when the lead has a creep tendency, the elasticity of the rubber can pull the lead back to the original position, so that the creep is reduced; the rubber strip below the wire is provided with the open pore, the air pressure below the wire is higher than the air pressure above the wire, downward wind is generated, the wind penetrates through the open pore on the rubber strip, the wire can be upwards supported, and creep generated by gravity is reduced.
Drawings
Fig. 1 is a schematic cross-sectional view of a low creep aluminum clad overhead ground wire of the present invention;
fig. 2 is a schematic side view of a low creep aluminum clad overhead ground wire of the present invention;
reference numerals: 1. an inner strand layer; 2. an outer strand layer; 3. a rubber strip; 4. pressing a groove; 5. and (6) opening holes.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in figures 1-2, a low-creep aluminum-clad overhead ground wire comprises an inner stranded wire layer 1 formed by aluminum-clad steel wires and an outer stranded wire layer 2 stranded on the surface of the aluminum-clad steel wires, wherein the outer stranded wire layer 2 is formed by stranding aluminum-clad gold wires, an optical fiber wire is inserted into the inner stranded wire layer 1, the surface of the outer stranded wire layer 2 is bonded with the distances between the tops of two sides of an upper conductive rubber strip 3 and a lower conductive rubber strip 3 which are symmetrical, the distances are matched with the diameters of the outer stranded wire layer 2 of a wire, and the side surface of the rubber strip 3 is connected with the outer stranded wire layer 2.
The preparation of the overhead ground wire comprises the following procedures:
s1, extruding the rubber strip 3 with the U-shaped section by a rubber extruder;
s2, sleeving the extruded rubber strip 3 on a matched round rod for transmission, extruding the outer wall of the rubber strip 3 in transmission to generate equidistant press grooves 4 on the outer wall of the rubber strip 3, wherein the distance between the press grooves 4 is 5-10mm, and the press grooves 4 are inwards recessed from the U-shaped bottom of the rubber strip 3;
s3, punching the partial rubber strip 3 obtained by the processing in the S2, wherein the punched holes 5 are respectively positioned at the U-shaped bottom and the side wall close to the bottom of the rubber strip 3;
s4, stretching the wires twisted with the outer stranded wire layer 2, and respectively coiling the rubber strips 3 which are perforated and not perforated in the S3 on two sides of the wires;
s5, the rubber strip 3 and the lead are stretched in the same direction at the same stretching speed, rubber adhesive is coated on the side wall of the rubber strip 3 stretched out from the reel, the rubber strip 3 coated with the adhesive is pressed on the outer walls of the two sides of the lead, the U-shaped bottom of the rubber strip 3 is not attached to the lead, and a gap exists.
When overhead earth wire installs, the rubber strip 3 that will punch is located the below of wire, makes wind from the trompil 5 that upwards can pass rubber strip 3 down, can upwards hold up the wire, reduces the creep that produces because of gravity.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a low creep aluminium package overhead ground wire, includes interior stranded conductor layer (1) that the aluminium package copper wire formed, transposition at outer stranded conductor layer (2) on aluminium package copper wire surface, its characterized in that: optical fiber wires are inserted into the inner stranded wire layer (1), conductive rubber strips (3) which are symmetrical up and down are bonded on the surface of the outer stranded wire layer (2), the vertical cross section of each rubber strip (3) is U-shaped, and the side faces of the rubber strips (3) are connected with the outer stranded wire layer (2).
2. A low creep aluminum clad overhead ground wire according to claim 1, characterized in that: the distance between the tops of the two sides of the rubber strip (3) is matched with the diameter of the outer stranded wire layer (2) of the lead.
3. The low-creep aluminum-clad overhead ground wire and the preparation method thereof according to claim 1 are characterized in that: comprises the following preparation procedures of the preparation method,
s1, extruding a rubber strip (3) with a U-shaped section by a rubber extruder;
s2, sleeving the extruded rubber strip (3) on a matched round rod for transmission, extruding the outer wall of the rubber strip (3) in transmission to generate equidistant pressing grooves (4) on the outer wall of the rubber strip (3), wherein the pressing grooves (4) are inwards recessed from the U-shaped bottom of the rubber strip (3);
s3, punching the partial rubber strip (3) obtained by the processing in the S2, wherein punched holes (5) are respectively positioned at the U-shaped bottom and the side wall close to the bottom of the rubber strip (3);
s4, stretching the wires twisted with the outer stranded wire layer (2), and respectively placing the rubber strips (3) which are perforated and not perforated in the S3 on the two sides of the wires in a winding manner;
and S5, drawing the rubber strip (3) and the lead in the same direction at the same drawing speed, coating rubber adhesive on the side wall of the rubber strip (3) drawn out from the reel, and pressing the rubber strip (3) coated with the adhesive on the outer walls of the two sides of the lead.
4. The low-creep aluminum-clad overhead ground wire and the preparation method thereof according to claim 3, characterized in that: the distance between the pressure grooves (4) in the S2 is 5-10 mm.
5. The low-creep aluminum-clad overhead ground wire and the preparation method thereof according to claim 3, characterized in that: and a gap exists between the U-shaped bottom of the rubber strip (3) in the S5 and the lead.
6. The low-creep aluminum-clad overhead ground wire and the preparation method thereof according to claim 3, characterized in that: when the overhead ground wire is installed, the perforated rubber strip (3) is positioned below the lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656045.XA CN111785426A (en) | 2020-07-09 | 2020-07-09 | Low-creep aluminum-clad overhead ground wire and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656045.XA CN111785426A (en) | 2020-07-09 | 2020-07-09 | Low-creep aluminum-clad overhead ground wire and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111785426A true CN111785426A (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010656045.XA Pending CN111785426A (en) | 2020-07-09 | 2020-07-09 | Low-creep aluminum-clad overhead ground wire and preparation method thereof |
Country Status (1)
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| CN (1) | CN111785426A (en) |
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| CN209015796U (en) * | 2018-11-29 | 2019-06-21 | 威海市泓淋电力技术股份有限公司 | A kind of irradiation rubber-covered pipe |
| CN209118795U (en) * | 2018-09-11 | 2019-07-16 | 东莞市领康特种导体有限公司 | A kind of alloy wire that intensity high resiliency is strong |
| CN209691466U (en) * | 2019-05-27 | 2019-11-26 | 成都八达接插件有限公司 | A kind of aerial cable destaticed automatically |
| CN209708677U (en) * | 2019-05-17 | 2019-11-29 | 无锡市新旭电缆有限公司 | A kind of non-damageable rubber insulation welding machine cable |
| CN209947500U (en) * | 2019-07-08 | 2020-01-14 | 东莞市信东橡塑五金制品有限公司 | Rubber protective sleeve with flame retardant effect |
| CN210073435U (en) * | 2019-08-07 | 2020-02-14 | 安徽明福电缆有限公司 | Overhead tensile crosslinked polyethylene power cable |
-
2020
- 2020-07-09 CN CN202010656045.XA patent/CN111785426A/en active Pending
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| CN1146608A (en) * | 1995-06-21 | 1997-04-02 | A·雷蒙公司 | Flexible tube shape sheath for bunch of cables |
| CN101464549A (en) * | 2009-01-14 | 2009-06-24 | 江西省电力信息通讯有限公司 | Anti-ice cover optical fiber composite overhead ground wire based on optical fiber temperature measurement |
| CN201673700U (en) * | 2010-05-12 | 2010-12-15 | 高元松 | Aerial cable |
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| CN204407063U (en) * | 2015-02-09 | 2015-06-17 | 宏安集团有限公司 | A kind of data cable |
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Application publication date: 20201016 |
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