SU1464217A1

SU1464217A1 - Electric cable

Info

Publication number: SU1464217A1
Application number: SU864175866A
Authority: SU
Inventors: Юрий Тихонович Плискановский
Original assignee: Иркутский Кабельный Завод "Иркутсккабель"
Priority date: 1986-11-24
Filing date: 1986-11-24
Publication date: 1989-03-07

Abstract

Изобретение относитс к электротехнике , в частности к кабельной технике, к конструированию и технологии изготовлени силовых кабелей с секторными жилами. Цель изобретени - снижение трудоемкости изготовлени и повышение надежности путем увеличени механической прочности конструкции . Секторна жила кабел имеет двухслойную изол цию. Первый слой изол ции , расположенный на поверхности жилы имеет толщину не более 1/2 номинальной толщины изол ции. Нулева жила и брон выполнены в виде металлических лент, продольно уложенных на поверхности, образованной дугой сектора, поверх первого сло изол ции. Второй слой изол ции расположен поверх нулевой жилы и брони и фиксирует их на поверхности жилы. 1 ил.The invention relates to electrical engineering, in particular, to cable technology, to design and technology for the manufacture of power cables with sector conductors. The purpose of the invention is to reduce the labor intensity of manufacturing and increase reliability by increasing the mechanical strength of the structure. The cable sector cable has a double layer of insulation. The first layer of insulation located on the surface of the core has a thickness of not more than 1/2 of the nominal thickness of the insulation. The null core and armor are made in the form of metal tapes, laid longitudinally on the surface formed by the arc of the sector, on top of the first insulation layer. The second layer of insulation is located on top of the zero core and armor and fixes them on the core surface. 1 il.

Description

1one

Изобретение относитс к электротехнике , в частности к кабельной технике, к конструированию и технологии изготовлени силовых кабелей с секторными жилами.The invention relates to electrical engineering, in particular, to cable technology, to design and technology for the manufacture of power cables with sector conductors.

Цель изобретени - снижение трудоемкости изгofoвлeни и повышение надежности путем, увеличени механической устойчивости конструкции отдельной жилы и возможности совмещени операций изолировани и наложени нулевой жилы и брони при сохранении расхода материалов.The purpose of the invention is to reduce the laboriousness of manufacture and increase reliability by increasing the mechanical stability of the structure of a separate core and the possibility of combining isolation and superposition of zero core and armor while maintaining the consumption of materials.

На чертеже представлена секторна изолированна жила кабел , поперечный разрез .The drawing shows a sector-isolated cable core, a cross section.

Электрический кабель содержит секторную токопровод щую жилу 1, окруженную первым слоем изол ции, имеющим участки 2 и 3. Поверх участка 3 изол ции расположена нулева жила 4. Цоверх нулевой жилы 4 и всей секторной жилы расположен второй слой изол ции 5.The electric cable contains a sector current-carrying conductor 1 surrounded by the first insulation layer having sections 2 and 3. A zero conductor 4 is located above the insulation section 3. A zero insulation conductor 4 is located above the entire sector conductor and the second insulation layer 5 is located.

Толщина первого сло изол ции на участке 2 равна или не превышает 1/2 номинальной толщины изол ции. На участке 3 толщина сло больше 1/2 Дн на величину, котора выбираетс в зависимости от механических нагрузок на кабель. Второй слой изол ции 5 фиксирует на поверхности изол ции нулевую жилу 4, чем достигаетс повышение механической устойчивости конструкции .The thickness of the first insulation layer in section 2 is equal to or less than 1/2 of the nominal insulation thickness. In section 3, the layer thickness is greater than 1/2 DN by an amount that is selected depending on the mechanical loads on the cable. The second layer of insulation 5 fixes the zero core 4 on the surface of the insulation, thus increasing the mechanical stability of the structure.

Claims

Invention Formula

An electric cable containing three insulated sector cores, a zero core and (or) armor, made in the form of metal tapes arranged longitudinally on the surface of the sector core in a sector portion formed by an arc of a circle, with contact at all points on the surface, characterized by in order to reduce the labor intensity of manufacturing and increase reliability by increasing the mechanical stability of an individual core while reducing the consumption of materials, the insulation of each core is made of a two-layer tolpdine of the first layer on the radial in common parts of the sector is 1/2 of the nominal thickness, and on the arc-shaped part of the sector - at least 1/2 but

(L

the minal thickness of the insulation, the zero core and (or) bron are located over the first insulation layer and are made with a width not exceeding the arc length of the sector along the surface of the first insulation layer, the second insulation layer is located over the first

INSULATION in the radial areas and over the zero core and (or) armor in the arc-shaped sector sector and has a thickness in the radial areas 1/2 nsminal thickness, and in the arc-shaped section no more than 1/2 the nominal insulation thickness.