Hydraulically forcing contacts against electrodes for electrofurnaces
AssigneeMannesmann Aktiengesellschaft
InventorsTheodor Mertin, Franz S. Hagen
Life of this patent
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Abstract
The contact urging pressure force is provided through corrosion proof bellows interposed between two covers, one being affixed to a cooled electrode carrier ring, the other one being provided for obtaining the contact urging force; the interior of the bellows contains springs opposing the hydraulic force, and further containing a check valve whose holding element is affixed to the second mentioned cover, closing the opening of the first mentioned cover as long as the hydraulic pressure does not exceed a certain amount.
Claims5
In an electrofurnace having an electrode, there being a cooled annular carrying ring provided for looping around the electrode, there being further at least one contact bracket for engagement with the electrode, a contact pressure producing device comprising:
- a first bushing cover affixed to said carrier ring and having a central opening, there being pressure conduit means for providing hydraulic fluid to said opening;
- a second bushing cover disposed for force engagement with said contacts;
- bellows interposed between said first and second bushing covers and connected thereto;
- resilient spring means interposed between said first and second bushing covers inside said bellows and providing a resilient force in opposition to any hydraulic force in the interior of the bellows tending to spread the two covers apart;
- and
- check valve means arranged in the interior of said bellows and mounted to a holding element affixed to said second cover for opening and closing said opening in said first cover, but being carried along whenever the pressure in the bellows exceeds a particular value.
Dependencies are inferred from the claim text.