DE2800716A1 - EARTHQUAKE PROOF HIGH VOLTAGE SWITCH - Google Patents

Description

January 9, 1978

Spre h er & Schuh AG- , CH-5001 Aarau

Earthquake-proof high-voltage switch

809849/0560

The invention relates to an earthquake-proof high-voltage switch with several rigidly interconnected Sehaltelemente, which are at the upper end of column insulators are attached, the lower end of which is attached to a common foundation by a spring device is.

Such a high-voltage switch is described in Swiss patent specification 430 825. Because of the upper stare Connection of the switching elements and thus also the column insulators occur at the upper ends of the column insulators unacceptably high bending stresses as the column isolators swing around the lower spring devices. This disadvantage is also present in switches according to US Pat. Nos. 3,794,277 and 3,973,078.

The invention has for its object to be a To create earthquake-proof high-voltage switch that is economical to manufacture and the disadvantage mentioned does not have the high bending stress at the head end of the column insulator.

To solve this problem, an earthquake-proof high-voltage switch of the type mentioned above is

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according to the invention characterized in that at a distance from the lower end of each Säulenisoiators at least one further device is provided, which a mutual deflection of the parts connected by them at least in one receiving the column insulators imaginary level.

By means of this at least one further device, the device located above this device can Part of the high-voltage switch when swinging out the under him. located whole column insulator or a part of the column insulator located below it is practically only slightly different from that Execute different horizontal movements, whereby the column insulator or its part between the both devices is present to deflect the spring device at its lower end can without excessive bending stress occurring in its upper area. Preferably the at least one other device attached to the top of each column insulator, because they are then is at the location of the highest bending stress.

A similar effect can be achieved if several additional devices are attached to different

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Places of the Säulenisclator are provided.

In particular if the switching elements of the high-voltage switch are approached by one to each column insulator parallel rotating column made of insulating material must be operated according to one embodiment of the invention the entire column insulator including its connections to the foundation and the switching elements be designed to be non-rotatable about the longitudinal axis of the column. There are, of course, modest turning movements that go through the elasticity of the materials and little play can be quite acceptable.

The individual devices can be constructed in any way as long as they correspond to the purposes of the invention, and devices known per se can be used. The devices can basically be designed as a hinge, spring element, damping element and the like. The devices are advantageously at least for the most part, including any springs, made of metal, because it influences of the weather and the influence Ύοη pests, such as insects or microorganisms can be better avoided than for example in plastics and elastomers is the case.

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The high-voltage switch can otherwise, i.e. with regard to the insulators, the switching elements and Any additional devices can be constructed in a manner known per se.

The invention is discussed below with reference to the schematic drawing, for example. Show it:

Pig. 1 is an elevation of a high-voltage switch having two column insulators;

Pig. 2 shows a movement diagram of this high-voltage switch, and

Pig. 3 a partially broken and partially longitudinal sectional enlarged view of a spring device of the high-voltage switch.

The drawn high-voltage switch has two column insulators 1, which are basically constructed in the same way are. Each column insulator 1 consists of two porcelain parts 10, which are connected by a flange connection 11 are rigidly connected.

Each pillar foot 12 is connected to the common foundation 4 by means of a spring device 3.

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Each column copy 'IJ is through a device 3' connected to a 'carrier 5. Each of the devices 3 ' allows a mutual deflection of the parts IJ and 5 connected by them in one of the two column insulators 1 receiving plane, which coincides with the plane of the paper in the drawing.

On each carrier 5, two switching elements 6 are each accommodated in one of the arms 6 ', 6 ".

The two inner arms 6 'are rigid at 7 and electrically connected to each other.

On the other hand, the two outer arms 6 ″ are flexible Leads 8 attached.

To actuate the switching elements 6, rotary columns 9 known per se are provided, which are only shown in FIG. 1 and are only indicated there as dash-dotted lines. Because of this rotary drive, the column insulators together with the spring devices 3 and J 'rotatably with respect to the Longitudinal column axis (not shown).

The devices 3 and 3 'can be of the same type,

which is assumed here for the sake of simplicity.

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The spring device 3 (FIG. 3) has on both sides of a plate 30 spring assemblies 31, 31 '(made of cup springs), to which the plate 32 connects at the top and a ring at the bottom. The screw bolts 34 successively pass through the base flange 120 of the column foot 12 (or part of the support 5), the plate 32, the upper spring assemblies 31 _} the plate 30, the lower spring assemblies 31 ″ and the ring 33 and carry nuts 35, so that the The whole thing is held together with a suitable bias of the spring assemblies 31, 31 '.

A cylinder 36 is welded to the plate 30, to which the plate 37 is welded. The plate is on the foundation by means of bolts 38 and nuts 39 4 (or attached to the column head 13).

If the connection 11 (FIG. 1) should also be replaced by a spring device 3, the arrangement is imaginable as if the solid line at the top in FIG. 3 and the dash-dotted line at the bottom in FIG. 3 Part together would have validity.

Sufficient torsional strength can possibly already be achieved by means of the screw bolts 34 and 38

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will. However, additional guides for the plates 30 and 32 on one another can also be provided for this purpose be.

The spring devices 3 and the (here similarly assumed) device 3 'receives the switch from Pig. 2 apparent compliance, so that in the case of the column head 13 the dangerous bending stresses that otherwise occur are not to be expected. As a result, the arms 6 'are not too strong exposed. That of the carriers 5 and the arms 6 'and 6 "formed composite is yes compared to the Sest des Switch completely resiliently mounted.

In some cases, the device 3 'as a simple hinge can be designed, the pivot axis of which would be perpendicular to the plane of the paper in the drawing, whereby the mobility is given, but a tilting of the carrier 5 (including their structure) does not take place can.

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Claims (6)

Expectations Γ \ I 1.) Earthquake-proof high-voltage switch with several rigidly interconnected switching elements which are attached to the upper end of column insulators, the lower end of which is attached to a common foundation by a spring device, characterized in that at a distance from the lower end (12) of each column insulator (l) at least one further device (3 ¹ ) is provided which allows the parts (1, 5) connected by them to be deflected towards one another at least in an imaginary plane to accommodate the column insulators (1). 2. High-voltage switch according to claim 1, characterized in that the at least one further device (3 ¹ ) is provided at the upper end (13) of each column insulator (l). 3. High-voltage switch according to claim 2, characterized characterized in that between the lower end (12) and the upper end (13) of each column insulator (l) at least a device (ll) is provided, the mutual deflection of the connected by them 809849/0560 RiGiHAL WSPECTED Column isolator parts (10) at least in one die Pillar insulators (1) allowed to absorb the imaginary plane. 4. High-voltage switch according to at least one of claims 1 to 3, characterized in that each column insulator (1) and its spring device (3) and its at least one further device (3 ¹ ) is non-rotatable with respect to rotational movement about the longitudinal axis of the column. 5. High-voltage switch according to claims 1 to 4, characterized in that the at least one device (3 ¹ ) absorbs kinetic energy during deflection movements. 6. High-voltage switch according to claims 1 to 5, characterized in that said device (3 ¹ ) is resilient. 809849/0560