SU1309089A1 - Bipolar elastic water-cooled cable - Google Patents

Abstract

The invention relates to electrical engineering, in particular to cable technology. The purpose of the invention is to increase the operational reliability by preventing the destruction of the insulation during operation due to abrasion. The cable contains a central multiwire core 1 in the form of a regular polygon with rounded tops and with concave sides. Vein 1 is twisted around the longitudinal axis with a constant length niaroM. On top of it is an insulation layer 2, the surface of which forms helical troughs 3. They have multiwire cores 4, having an ellipsoidal shape in cross section. The inner surface of the shell 5, the surface of the core 4 and the surface of the insulation 2 form an enclosed space 7 for the flow of water along the cable, the invention allows an increase in the number of cores in the layer, which increases the flexibility of the cable. 2 Il. i СЛ со о со о оо со со (Рig.2

Description

one

The invention relates to electrical engineering, in particular, to cable technology, and can be used in the design and manufacture of flexible welding water-cooled cables.

The purpose of the invention is to increase the operational reliability of the cable by eliminating the destruction of the insulation during operation due to abrasion of its conductor by its conductors.

FIG. 1 and 2 are respectively five- and three-core cables, cross-section.

The central busbar conductor 1 of the conductor 1 is made of multiwire with a cross section in the form of a regular polygon whose vertices are rounded and the sides are concave. Insulation 2 of the central conductor is made with a constant crowd around the perimeter of the conductor, fits tightly to the surface of the conductor and the external surface of the insulation repeats the surface of the conductor. The central core 1 is twisted around a longitudinal axis with a step of constant length. Here, the surface of the insulation 2 forms spiral grooves 3, in which conductive multiwire cores 4 are laid, having an ellipsoidal shape in cross section. Zhilel 4 has a surface adjacent to the surface of the insulation of the central core 2 and to the inner surface of the shell 5. Screw surfaces 6 formed by the projections of the insulation 2 on the edges of the polygon are adjacent to the inner surface of the shell 5. The surface of the core 4, the inner surface of the shell 5 and the surface of the insulation 2 form an enclosed space 7 designed to allow water to flow along the cable.

When a cable designed to transmit large, on the order of thousands of amperes, currents, significant dynamic forces occur between conductors 4, strains to mix living 4 along the perimeter of insulation 2. Protrusions formed by the angles of polygon 1 prevent per1309089

the tangle of lived insulation 2. ellipsoidal necessary living veins

0

five

0

five

0

4 relative to the surface

Tsrich fulfillment lived 4

forms allows you to get

the sectional size of the tokopi excludes movement

lived 4 within the space 7 formed by the surface of the insulation and the shell 5. The most mechanically stable structure is obtained in the case of the triangular profile of the central core.

The use of polygons with a large number of sides allows an increase in the number of cores in the layer, which gives an increase in the flexibility of the cable.

Claims (1)

Invention Formula A bipolar flexible water-cooled cable containing a central multi-conductor conductive core, over which an insulation layer is located, having a constant thickness along the perimeter of the conductor, having wound multi-conductor conductor cores located above the insulation of the central conductor, insulating partitions, section cores, located in the layer, and the outer shell, characterized in that, in order to increase the operational reliability by preventing the destruction of the insulation during operation due to abrasion, The rectangular core is made in the form of a regular polygon with rounded vertices and with concave sides and twisted along its entire length with a constant pitch, the insulation surface of the central core adjoins the inner surface of the shell along helical surfaces formed of rounded apices of the said polygon, the number of veins in the nova is equal to the number of sides of the polygon, and the cross-section of the veins, stirred over the insulation of the central conductor, is ellipse-shaped, with those that coincide with the surface of the insulation tral conductor and the inner surface of the shell. Compiled by L. Bibergal Editor N. RogulichTekhred I. VeresKorrector .4. Zimokosov Order 1438/44 Circulation 699 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Design. four