DD223025A1 - ARRANGEMENT FOR HOLDING CABLE STRIPS OR STEEL CONNECTIONS - Google Patents

Abstract

Arrangement for fixing cable loops and / or steep connections to guy masts or portals as well as transverse overvoltage in high-voltage installations by means of holders without additional insulation. It is a fail-safe, possible deflection-free fixation can be achieved without additional insulation, in which no mechanical connection to other potential-conducting or grounded systems is provided, but all forces are absorbed by the spannungsfuehrenden parts of the relevant conductor itself. These are as holding elements on the spannungsfuehrenden side of the guy insulators and the higher lying conductor at Querueberspannungen the splayed ends of two interconnected at the other ends, preferably rigid construction elements mounted so that the common connection point of the construction elements mechanically coupled to the cable loop or steep connection is to keep the splayed attachment radially movable.

Description

Title of the invention

Arrangement for holding rope loops and / or steep connections

Field of application of the invention.

The invention relates to an arrangement for fixing conductor cable loops and / or partial connections in high voltage systems.

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Characteristic of the known technical solutions

For fixing conductor cable loops or partial connections to poles, gantries, busbars or busbar overvoltages against impermissible decaying or inadmissibly close approach to other live or grounded system components, the following known technical solutions have hitherto been used:

- free conductor cable guidance by correspondingly large system design and distances (DE-AS 1490380)

- Fixation on the supports or other elements standing on the ground, z. 3. Trennl, Verlag W. Girardet Essen P. 271, Figure 218. Glasneck: The structural design of simplified 220 / 11O-kV substations The connection network, No. 27 , October 1975 pp. 648-651, in particular p. 650 image 3)

- Use of additional insulation and masses (DD 205035) attached to the portal or mast

Use of a device for anchoring the flexible loop on the mast of a transmission line (SU 513 435)

These technical solutions either all involve a considerable amount of space or the use of additional built-in insulation. The increased space requirement inevitably means larger systems and thus increased costs.

For installations erected in areas of extreme pollution, it is particularly important to keep the number of insulation units as low as possible. Especially in plants where strong, highly conductive ice deposits can occur on the insulations, such as in the area of influence of wet cooling towers, the use of vertical or slightly inclined insulation is impractical due to possible shield bridging and associated risk of overturning,

Object of the invention

The aim of the invention is a reliable, possible deflection-free and space-saving fixation of conductor loops or partial connections without additional insulation.

Explanation of the essence of the invention

The invention has for its object to provide an arrangement for fixing conductor cable loops or partial connections, in which no mechanical Ver

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attachment to other potential or grounded people

System parts are used, but all forces are absorbed by the live parts of the relevant conductor itself. ,

For this purpose, the splayed ends of two interconnected at the opposite ends, normally rigid construction elements are sobefestigt> on the live side of the guying insulators, or the higher lying conductor with transverse overvoltages>. that the common connection point of these elements to the splayed attachment, which takes place on guy chains on an additional construction element transversely to Leiterzugrichtung and the departure of a cross overvoltage directly on the upper conductor, remains radially movable and mechanically coupled to this point at any point to the loop or steep connection is, so that the loop or Steeilverbinduhg can perform no deflection in the crosspoint laterally. <* In the application of the invention for the fixation of conductor loops on guy masts or portals, another, same triangle arrangement is attached to the second guy insulation of the same conductor and the radially movable connection points of both triangle arrangements by another construction element, which is not normally attached, contracted to a desired state. At this connection element and the Dreiecksanordnungeri the conductor cable loops are attached to the required points and thus fixed against swinging. ,

In a further embodiment of the invention, this page from a non-rigid material, z. As rope, running. For bundled conductors, this can also be a number of conductor cables of the bundle.

In steep joints with bundle conductors, some stabilization of the loop is already achievable by forming only the conductors of the bundle the triangle.

If correspondingly large pressure forces occur in a triangle arrangement in one leg, the triangle is suitably stabilized (truss, parallel elements) in order to prevent deformation or overloading of the construction.

At lower pressure, the triangular leg, which is subjected to tension, can be formed of flexible material (rope or similar). This can also be the conductor of the loop to be held.

The number of fixing points of the rope loops on the triangular constructions or on the connection between them can be selected as needed.

embodiment

The explanation is based on three basic representations.

Show it:

Fig. 1: Arrangement of a triangle for fixing the steep joints on a line end mast at the transition to the cable

Fig. 2: Steep joints with transverse overvoltages

Fig. 3: Arrangement of two triangular constructions on an angle guy mast.

According to Fig. 1, the fixing of the steep connection is made so that the legs of a triangular arrangement forming splayed construction elements 8 in the points with the third side of the triangle forming, attached to the potential-carrying armature of the guy string, horizontally arranged wide construction element. 7

are mounted radially movable. The connection point of the splayed construction elements is mechanically coupled to the conductive steep connection 6. This point, seen in the pulling direction of the steep joint, seen, perform no lateral movement.

According to Fig. 2, the attachment of the spreader construction elements 8 takes place at the busbar overvoltage 5 or the upper conductor at line crossings with steep joints 6. The other end of the steep connection is placed on the lower conductor or a switching device or 3 supporters. 3, two triangular constructions with the spread Konstuktiönselementen 8 each connected to the horzintalen construction element 7 of the potential-lead fitting of Entspannisolatorenkette4 in the points 10 and the respective other connection points 9 of the construction elements 8 with a Connected Verbindungsseielement 11. The cable loop is deflected under the traverse of the boom 2 from the master shaft by coupling with the connection points.

Claims (8)

invention claim 1) Arrangement for fixing cable loops and / or 'steep connections to guy masts or portals and transverse overvoltages by means of support member s without additional insulation, characterized in that as support elements on the live side of the guy insulators (4) and the higher-lying conductor (5) transverse overvoltages, the spread ends of two interconnected at the other ends, preferably rigid construction elements (8) are fixed so that the common connection point (9) of the structural elements (8) mechanically coupled to the cable loop (6) or steep connection to the spread attachment (10) remains radially movable. · · 2) Arrangement according to item!, Characterized in that the splayed construction elements (8) are stabilized by additional struts. .- 3) Arrangement according to item 1 and 2, characterized in that in guy chains for the splayed attachment (10) an additional construction element (7) is mounted horizontally and transversely to the direction of line direction. 4) Arrangement according to item 1 and 2, characterized in that at transverse overvoltages the spread attachment (10) of the construction elements (9) is provided directly on the upper conductor (5). 5) Arrangement according to item 1 and 2, characterized in that the radially movable connection points (9) of the voltage-carrying sides of the guy insulators (4) of a mast or portal arranged splayed construction elements (8) by means of another construction element (11) are pulled together , to which the cable loop (6) can additionally be fastened. 6) Arrangement according to point 5, characterized in that the splayed construction elements (8) have a different length. 7) Arrangement according to item 1 to 6, characterized in that the splayed construction elements (8) are adjustable in length. • · 8) Arrangement according to point 5, characterized in that the further construction element (11) for contraction of the splay construction elements (8) through the cable loop (6) itself is formed. For this 3 pages drawings