AT75277B - Method and device for increasing the durability of electrodes for long arcs, especially graphite electrodes. - Google Patents
Method and device for increasing the durability of electrodes for long arcs, especially graphite electrodes.Info
- Publication number
- AT75277B AT75277B AT75277DA AT75277B AT 75277 B AT75277 B AT 75277B AT 75277D A AT75277D A AT 75277DA AT 75277 B AT75277 B AT 75277B
- Authority
- AT
- Austria
- Prior art keywords
- electrodes
- durability
- increasing
- especially graphite
- long arcs
- Prior art date
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title description 2
- 229910002804 graphite Inorganic materials 0.000 title description 2
- 239000010439 graphite Substances 0.000 title description 2
- 238000000034 method Methods 0.000 title description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Electrostatic Separation (AREA)
Description
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In diesen Fig. ist a das Ende eines Flammrohres mit irgend einer normalen, beispielsweise rotierenden, Luftzuführung, deren Richtung die Pfeile andeuten. b ist die Elektrode, welche von dem Kühlrohr c und der isolierenden Führung d umgeben ist.
In Fig. 1 ist beispielsweise eine übliche Anordnung des Flammenraumes und der Elektrode dargestellt. Hier entsteht irgend ein Luftverdünnungsraum, etwa von der Form der gestrichelten Linie, in welchem das Ende des Lichtbogens bald auf der Elektrode und bald auf dem Kühler spielt, wodurch letzterer sehr rasch zerstört wird.
Wenn man dem Ofen dagegen nach der in Fig. 2 dargestellten Ausführungsform um die Elektrode herum einen verengten Querschnitt gibt, so'wird der Luftwirbel zusammengedrückt und die Luftverdünnungszone nimmt die durch die Schraffierung kenntlich gemachte Form an, Die Fusspunkte der Bögen werden also entsprechend dichter zusammengeschoben. Wegen der gesteigerten Luftgeschwindigkeit längs der Elektrode können die Bögen an den Seitenflächen der Elektrode oder des Kühlers keinen Halt finden.
Der letztere kam) auch noch durch einen austauschbaren Deckring e (Fig. 2 und 3), beispielsweise aus Graphit oder Metall, geschützt werden.
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bzw. durch einen Schirm erreicht wird, kann noch durch besondere Ausführung der Verengerung oder des Schirmes verstärkt werden, beispielsweise wie dies in den Fig. 2 und 3, rechte Hälfte, dargestellt Mt, wodurch eine RenektorWirkun zustande kommt.
PATENT-ANSPRÜCHE : 1. Verfahren zur Erhöhung der Haltbarkeit von Elektroden für lange Lichtbögen, hesonder-ct
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In these figures, a is the end of a flame tube with any normal, for example rotating, air supply, the direction of which is indicated by the arrows. b is the electrode which is surrounded by the cooling pipe c and the insulating guide d.
In Fig. 1, for example, a conventional arrangement of the flame chamber and the electrode is shown. Here some air dilution space arises, perhaps of the shape of the dashed line, in which the end of the arc now plays on the electrode and now on the cooler, whereby the latter is very quickly destroyed.
If, on the other hand, the furnace is given a narrowed cross-section around the electrode according to the embodiment shown in FIG. 2, the air vortex is compressed and the air dilution zone assumes the shape indicated by the hatching, so the base points of the arches are accordingly pushed closer together . Because of the increased air velocity along the electrode, the arcs cannot find a hold on the side surfaces of the electrode or the cooler.
The latter could be protected by an exchangeable cover ring e (Fig. 2 and 3), for example made of graphite or metal.
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or is achieved by a screen, can be reinforced by a special design of the constriction or the screen, for example as shown in FIGS. 2 and 3, right half, whereby a renector effect comes about.
PATENT CLAIMS: 1. Process to increase the durability of electrodes for long arcs, hesonder-ct
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Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO75277X | 1915-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT75277B true AT75277B (en) | 1919-01-25 |
Family
ID=19882410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT75277D AT75277B (en) | 1915-08-07 | 1916-07-18 | Method and device for increasing the durability of electrodes for long arcs, especially graphite electrodes. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT75277B (en) |
-
1916
- 1916-07-18 AT AT75277D patent/AT75277B/en active
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