SU33878A1 - Hollow stranded wire for high voltage transmission lines and method of manufacturing such - Google Patents

Description

The already known hollow stranded conduits for high-voltage transmission lines, twisted from separate profiled conductors and not having a supporting core, are known. The present invention relates to the arrangement of such a wire, and consists in the fact that the individual conductors constituting the wire are provided. corresponding grooves of adjacent conductors with grooves and protrusions entering one another and mutually covering each other in such a way as to prevent divergence of individual conductors even in the unwound state of the wire. Such a wire, moreover, has sufficient mechanical resistance when subjected to forces directed along the radius.

In the drawing of Figs, 1, 2, 3, 4 depict various cross-sectional shapes of individual conductors; FIG. 5- cross section of the wire; ig. b - 13-segments of the hollow wire with radially located grooves and protrusions; 14-22 times the different cross-sectional shapes of the

the waterways whose grooves and protrusions represent the meadow of a circle, FIGS. 23 and 24 depict the transverse and longitudinal sections of the wire with a supporting rope placed inside it; FIG. 25 and 26 are longitudinal and transverse sections of a wire made up of two oppositely twisted layers; FIG. 27, 28 and 29 are various embodiments of devices for making the above wires.

The individual conductors that make up the wire can have a wide variety of shapes, for example, the protrusions and grooves can be made in the form of rectangles (Fig. 2) or dovetail (Fig. 1-6). When using individual conductors with a cross section shown in FIG. 3-4, where both the grooves and the protrusions, in turn, have several protrusions and iitioidins, which are included in each other when connected, the wire has a particularly large resistance to the effects of radial forces.

In the grooves of individual conductors, in order to increase the resistance

Serving longitudinal forces, can be placed wire of durable material (Fig. 5) with a circular cross section.

The grooves and protrusions of the conductors can be made not in the tangential, but in the radial direction (fig, b-13), the falls can be placed in several layers, for example, in two layers, as shown in fig. b-9.

For such multilayer wires, conductors can be used either with a cross section (Figs 6, 7 and 9) or with a different one (Fig. 8), due to the fact that the conductors constituting the individual layers (strands) are fastened with each other. other radially, the proposed wire has sufficient strength in the presence of tangential stresses (Figs 8 and 13).

If at the same time the protrusions of the conductors are made tapering in a direction. to their base (see, for example, Figs. B-8, 10-13), then the wire resists well enough with the radial forces TK (Fig, 12).

In order to increase the mutual mobility of individual conductors on the finished wire and to give it, as a result, the greatest possible flexibility, conductors are used, the grooves and protrusions of which are circular arcs (4.8, 10, 12 and 14-22). be either symmetrical or asymmetrical, and, for example, the conductors shown in FIG. 21 and 22 are used together so that in the finished wire the protrusions of the conductor of one profile fit into the grooves of the conductors of the other profile that are to the right and left of it. The grooves and protrusions of some conductors (Figs. 10-13, 16, 19, and 20) can be complemented by overlapping or mutually overlapping portions.

If the wire is made of a material with little mechanical strength, then inside it is a rope or cable made of a material that is stronger than the wire itself (Fig. 23-24), and, as is already known, such wire can be provided with a hole mi O, for removal of the liquid that is able to accumulate in it.

In order to destroy torsional forces, usually arising at high tensile stresses of twisted hollow wires, two layers of profiled conductors (Figs. 25 and 26) can be applied in the proposed wire, of which one layer is twisted to the right. , and the other to the left; in doing so, the torsional forces will be counterbalanced.

When making the prozode described above, the grooves and protrusions or overlapping parts arranged in separate conductors should fit tightly into each other, and the finished wire should have as smooth a surface as possible. Therefore, it is necessary that, before making a wire, the grooves should be as wide as possible and the protrusions should be free to enter them; when twisting, the grooves must be clamped again. In addition, in order to obtain the desired smooth surface of the hollow wire, the shape of the individual conductors must be appropriately changed during twisting.

According to the invention, the necessary change in the shape of individual conductors is achieved by the fact that during the twisting they are subjected to appropriate mechanical treatment, for example, they are pulled. through a drawing board along an appropriately shaped core, which is advisable to arrange in such a way that it can be rearranged in the longitudinal direction. In order to draw conductors, use the drawing drums used in conventional sewing machines, the drive of which must be suitably reinforced.

Depicted in FIG. 27, the device consists of a adjustable profiled core (I), which passes through the nut 2 and can be made stationary or rotating. A handwheel 5 is used to reposition the core. Ganka 2 is mounted on disk 4, which can be fastened to the scraper. The core 7 enters the guide part 5 made in the form of a drawing eye, which provides the direction of the profile and the end

neither

has a diameter that is exactly the same (working for the diameter of the desired profile. On the HUX, the control part 5 is attached to the disk 6, which can be made non-moving or rotating. The nProfiled conductors are wound from the coils 7 and passed through pbix

special guides 8 and 9 to the wire eye 5, Inside this eye 5, the conductors interlock with each other and

/. when further advanced through the HALF-guide and over the profilipan) core, they are subjected to pressure causing the corresponding

waters ° T13meniiie forms of their profiles and, thank god this, a strong connection of them

go with a friend. This pressure, and at the same time, the degree of change in the shape of a proshe, sirloin, can be controlled by

bottom Permutation of the core / longitudinal

The basics whose profile, in view of this, foreshadows, is the corresponding curve

Upperline. The pulling is done by the winding threads on the wire drum / O, from which it then goes to the cable drum. When the ratio of the relevant regulation of the scrolling

elmashchiny can svivat produce

that simultaneous twisting.

In a modified device (Fig. 28), a ke-board, a drawing board 32 is mounted in a gear wheel 55 rotating on

obsharikov prschpniknik 34. Toothed iku ,; the wheel 33 is driven into rotation by the crawler 55. The rotating parts are mounted, that is inserted in the box 57 and rotated in the main

bath; In board 52, as in the device

according to FIG. 27, comes tapering bull, core /, installed in the plate 4 |

and resetted by the help of the nut 2 5ы1ь

and handwheel 5.

In the manufacture of the wire, the separate conductors move from the coils 7 ~ il through the guides 8 and 9 to the drawing board. When using profiled conductors with teeth or sci. In the overlap portions, these iaCTMs interlock with each other in the rail 5 /. With further movement between the profiled core / and the rotating drawing board 32, the conductors already connected to the common wire are subjected to gradual increasing pressure, telling them the desired change in shape.

The final pro;) conductor guides can also be produced by rolling. In this case, a rolling device is used instead of a drawing board.

Such a device is shown in FIG. 29, where instead of the drawing board, JS profiled rollers are installed, which are realized due to their shape. together with core profiling / gradual pltsoopiis conductors to the desired shape. Volts / iV are mounted in a gear wheel 20, rotated on ball bearings / P and rotated by means of a pinion // mounted on an engine shaft. As in the device of FIG. 28, rotating parts are installed in a closed / 5 box filled with oil. Otherwise, the design of the device and its operation do not differ from those already described above.

The subject of the patent.

1. A hollow stranded wire for high-voltage transmission lines, twisted from separate profiled conductors and not having a supporting core, characterized in that the individual conductors constituting the wire are provided with such shapes corresponding to each other at adjacent wires and mutually encompassing each other in order to prevent divergence of the individual conductors even in the unwound condition of the wire.

2. The shape of the wire described in paragraph 1, characterized in that, in order to facilitate the relative mutual movement of the individual conductors, the grooves and protrusions of the conductors are circular arcs (Fig. 4, 8, 10, 12, 14 and 22).

3. The form of execution described in pp. 1 and 2 of the wire, so that the wire is composed of two layers, of which one is twisted to the right and the other to the left (Fig. 25).

4. In the wire described in paragraphs 1-3, the use of conductors, the cross section of the grooves and protrusions of which has the shape of a dovetail (Fig. 1-6).

;five. In described in paragraph 1-4

I wire the conductors of two

; various profiles, mutually alternate; . of which one has only protrusions, and the other only grooves, so that. ledges

I - conductor of one profile is included in PAI. On the right and to the left of it I of the conductors of another profile (Fig. 21 I and 22).

I6. When characterized in pp p.

I 1-5 wire application of holes from 1 more durable than the material of the cable,

;

material laid B (the space between the manhole and the protrusion entering into it (Fig. 5).

7. The form of execution of the wire described in item 1-b, characterized by the fact that the grooves and protrusions of adjacent conductors interconnecting each other are located in the radial direction (Fig. 6 and 13).

8. In the wire described in paragraph 7, made in one twist, the use of conductors partially overlapping each other or arranged in an overlap (Fig. 10-13). - 9. With the use of conductors as described in paragraph f} -8 of the wire

projections tapering towards their base (Figures 6-8 and 10-12).

10. With the wire described in paragraphs 1-9, use of a rope placed inside the wire made of a material that is stronger than the wire (Fig. 23-24).

P. A method of manufacturing the wire described in claim 1-10, characterized in that the final profiling of the individual conductors is carried out during the twisting of the wire by dragging them or rolling them gradually (Fig. 27-29).

12. Acceptance of the method described in clause I, consisting in that the rolling or drawing board rotates, and the core corresponding to this board is fixed or the board is stationary, and the core rotates.

13. Alteration of the method described in paragraph 12, characterized in that, instead of the drawing board, a roller is used (Fig. 29). ,

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the patent of the company P, the company Metal, Metal /, Bank and .. Metallurgical company L 33878 in rt. Clause. To patent of foreign companies of lolagan. / bank and Metallur (a, mateakteri, otln-,. the second pro0 dm and ko to the roller wire (fig. of the method, which is an electrical elbow or heart-shaped

Expert CAf. Khoetsky Editor A. V. Malevekii

LSPPROMPCHATSYUZY TYPE Psch Work. Zak 2S25-1000, Joint Stock Company Metallic Society 33878