RU2361304C1 - Overhead ground wire cable - Google Patents

Overhead ground wire cable Download PDF

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Publication number
RU2361304C1
RU2361304C1 RU2008122713/09A RU2008122713A RU2361304C1 RU 2361304 C1 RU2361304 C1 RU 2361304C1 RU 2008122713/09 A RU2008122713/09 A RU 2008122713/09A RU 2008122713 A RU2008122713 A RU 2008122713A RU 2361304 C1 RU2361304 C1 RU 2361304C1
Authority
RU
Russia
Prior art keywords
wires
steel
diametre
layer
diameter
Prior art date
Application number
RU2008122713/09A
Other languages
Russian (ru)
Inventor
Владимир Викторович Петрович (RU)
Владимир Викторович Петрович
Виктор Александрович Фокин (RU)
Виктор Александрович Фокин
Алексей Константинович Власов (RU)
Алексей Константинович Власов
Вячеслав Иванович Фролов (RU)
Вячеслав Иванович Фролов
Александр Васильевич Звягинцев (RU)
Александр Васильевич Звягинцев
Александр Николаевич Жулев (RU)
Александр Николаевич Жулев
Original Assignee
Владимир Викторович Петрович
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Владимир Викторович Петрович filed Critical Владимир Викторович Петрович
Priority to RU2008122713/09A priority Critical patent/RU2361304C1/en
Application granted granted Critical
Publication of RU2361304C1 publication Critical patent/RU2361304C1/en

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Abstract

FIELD: electric engineering.
SUBSTANCE: invention relates to electric engineering. The overhead ground wire cable consists of central steel wire (1) having D1 diametre. The first layer in the cable consists of seven wires (2) having D2 diametre, while the second layer is composed of interchanging seven steel wires (3) of D3 diametre and seven steel wires (4) of D4 diametre. The third layer of fourteen steel wires (5) of D5 diametre is implemented so that the first, second and third layers have similar lays in one direction and linear contact with the first, second and third layers. The diametres ratio is as follows D1 : D2 : D3 : D4 : D5 = (1.81-1.9):(1.3-1.36):(1.3-1.36):1:(1.6-1.67). The external surfaces of the third layer wires are laid with a gap sized as 3-5% from nominal wire diametre. They are plastically deformed, and contact surface area between the third layer wires is increased as well as the contact surface between the first and second layer wires. Generally, the overhead ground wire cable is tightened.
EFFECT: increased stability of overhead ground wire cable to lightning, vibration impacts and to short circuit impacts and etc.
1 dwg

Description

The invention relates to the field of electrical engineering, namely, to designs of lightning protection cables made by a twist of steel wires, and can be used for suspension on overhead power lines (OHL) to protect the OHL from direct lightning strikes.
A wire is known for overhead power lines containing a central steel-aluminum core and at least one twist twisted from alternating contacting aluminum and steel-aluminum wires twisted around it, while aluminum wires are shaped at least in the outer winding (see the description of the invention to the copyright certificate USSR No. 1456997, IPC Н01В 5/08, publication 02/07/1989).
The disadvantages of the known wires are:
- the complexity of manufacturing a tool to give an appropriate shaped profile of aluminum wire;
- problems associated with ensuring the geometric dimensions of the shaped wire along its length;
- the complexity of the manufacture of the template with shaped holes for twisting the wire.
A lightning-protective cable is known that contains a central steel core and two twists of steel wires twisted around it, a layer of release material, a polymer sheath made from a cross-linked polyethylene composition, an optical fiber, a hydrophobic filler, and a polymer tube (see utility model description to RF patent No. 45046, IPC H01B 7/10, publication 10.04.2005).
A disadvantage of the known invention is the following:
- coating steel wires with a polymer sheath leads to the loss of the main purpose of the cable - protection against direct lightning strikes.
A twisted wire product is known - for example, a steel rope containing a steel core, the first twist of six steel wires, the second twist with alternating six steel wires of one diameter and six steel wires of another smaller diameter and a third twist of twelve steel wires that are stacked with gaps between them, the size which is 15-70% of the diameter of these wires, while the outer surfaces of the wires of the third coil are plastically deformed and the contact area between the wires of the third coil is increased As well as between the wires of the first and second helix and the product generally is sealed (see. The description of the invention to the certificate of authorship USSR №669415, IPC N01V 13/02, publication 25.06.1979).
A disadvantage of the known twisted wire products is the following:
- with such a wide range of 15-70% of the clearance of the wires of the external winding, a constant adjustment of the diameters of the wires is required when twisting new rope diameters.
The task of the invention is to increase the resistance of a lightning protection cable to lightning strike when all the technical requirements affecting the reliability of overhead power lines are met.
The essence of the claimed invention consists in the following - it is proposed to use a lightning protection cable containing a central steel wire with a diameter of D 1 , the first twist of seven wires with a diameter of D 2 , the second twist with the alternation of seven steel wires with a diameter of D 3 and seven steel wires with a diameter of D 4 and third fourteen coils of steel wires with a diameter D 5, wherein the first, second and third helix formed with the same pitch of lay, in one direction and a linear contact wires of the first, second and third helix, soot Ocean diameters D 1: D 2: D 3: D 4: D 5 = (1,81-1,9) :( 1,3-1,36) :( 1,3-1,36) :( 1 1,6-1,67), the outer surfaces of the wires of the third layer are laid with gaps
3-5% of the nominal diameter of the wires, are plastically deformed, the contact area between the wires of the third wire is increased, as well as between the wires of the second and first wires and the cable is generally sealed.
This allows, using a new design for a ground wire, a new method of its manufacture, to significantly increase the resistance of a lightning protection cable to lightning strike, which is confirmed by test report No. 2.
The invention is illustrated in the drawing, which shows a cross section of a ground wire.
The lightning protection cable contains a steel core in the form of wire 1 with a diameter of D 1 , the first twist of seven steel wires 2 with a diameter of D 2 , the second twist with alternating seven steel wires 3 with a diameter of D 3 and seven steel wires 4 with a diameter of D 4 and the third twist of fourteen steel wires 5 with a diameter of D 5 . At the same time, the first, second and third coils are made with the same pitch, in one direction with a linear touch of the wires of the first, second and third coils. The ratio of the diameters of the wires D 1 : D 2 : D 3 : D 4 : D 5 = 1.81: 1.3: 1.3: 1: 1.6. The outer surfaces of the wires of the third wire are laid with gaps of 3-5% of the nominal diameter of the wires, the plastic deformation of the third wire in the outer surfaces of the wires increases the contact area between the wires 5 of the third wire, and also between the wires 4, 3 and 2 and compacts the cable as a whole.
The manufacturing technology of a lightning protection cable is as follows.
The twisting of wires 2, 3, 4 and 5 of the cable is carried out in one technological operation on traditional equipment used in the manufacture of ropes and cables. At the same time, the stitching pitch for all layers of wires 2, 3, 4 and 5 is kept constant, while allowing different stitch angles for each wire layer, with the appropriate selection of wire diameters by layers, which eliminates the possibility of crossing wires in separate layers and provides them with a linear touch while laying.
The second technological operation is the plastic deformation of the product, which is performed simultaneously with the twisting of the cable. In this case, plastic crimping of the outer wires 5 is carried out, which are laid with gaps of 3-5% of the nominal diameter of the wires, with a certain degree of crimping, as a result of which the outer surfaces of the wires 5 of the third layer are plastically deformed. The contact area between the wires 5 of the third coil is increased, as well as between the wires 4 and 3 of the second coil and the wires 2 of the first coil, which leads to a cable seal.
The claimed invention allows to increase the resistance of a lightning protection cable to lightning strike, without reducing the cable tension and wire breakage during discharge, subject to all technical requirements affecting the reliability of overhead power lines.

Claims (1)

  1. Lightning protection cable containing a central steel wire with a diameter of
    D 1 , the first twist of seven wires with a diameter of D 2 , the second twist with the alternation of seven steel wires with a diameter of D 3 and seven steel wires with a diameter of D 4 and the third twist of fourteen steel wires with a diameter of D 5 , while the first, second and third twigs are made with the same pitch strands, in one direction and with a linear touch of the wires of the first, second and third coils, the ratio of diameters D 1 : D 2 : D 3 : D 4 : D 5 = (1.81-1.9) :( 1.3-1 , 36) :( 1.3-1.36): 1: (1.6-1.67), the outer surfaces of the third coil wires are laid with gaps of 3-5% of the nominal diameter of the wires, pl are deformed, the contact area between the wires of the third wire is increased, as well as between the wires of the second and first wires and the cable as a whole is sealed.
RU2008122713/09A 2008-06-04 2008-06-04 Overhead ground wire cable RU2361304C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2008122713/09A RU2361304C1 (en) 2008-06-04 2008-06-04 Overhead ground wire cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2008122713/09A RU2361304C1 (en) 2008-06-04 2008-06-04 Overhead ground wire cable

Publications (1)

Publication Number Publication Date
RU2361304C1 true RU2361304C1 (en) 2009-07-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2008122713/09A RU2361304C1 (en) 2008-06-04 2008-06-04 Overhead ground wire cable

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RU (1) RU2361304C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012060737A2 (en) * 2010-11-03 2012-05-10 Vlasov Aleksey Konstantinovich Overhead ground wire with optical communication cable
WO2012128664A1 (en) * 2011-03-21 2012-09-27 Fokin Viktor Aleksandrovich Method for manufacturing a high-temperature conductor for an overhead power transmission line, and conductor produced by said method
RU2490742C2 (en) * 2011-10-06 2013-08-20 Виктор Александрович Фокин Method of steel-wire rope manufacturing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012060737A2 (en) * 2010-11-03 2012-05-10 Vlasov Aleksey Konstantinovich Overhead ground wire with optical communication cable
WO2012060737A3 (en) * 2010-11-03 2012-08-16 Vlasov Aleksey Konstantinovich Overhead ground wire with optical communication cable
WO2012128664A1 (en) * 2011-03-21 2012-09-27 Fokin Viktor Aleksandrovich Method for manufacturing a high-temperature conductor for an overhead power transmission line, and conductor produced by said method
RU2490742C2 (en) * 2011-10-06 2013-08-20 Виктор Александрович Фокин Method of steel-wire rope manufacturing

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Effective date: 20141119

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Effective date: 20191204