Arc furnace pressure ring assembly
An electric arc furnace and pressure ring technology, applied in the field of pressure ring components, can solve the problems of low sealing integrity and collapsed pistons, etc.
Active Publication Date: 2008-03-19
METIX (PTY) LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This expedient seal usually has low integrity and is often blown out of the piston in the event of a sudden pressure increase in the furnace, as in the case of a furnace explosion
Method used
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Embodiment Construction
[0055] Referring to the drawings, a non-limiting embodiment of a compression ring assembly in accordance with the present invention is generally indicated by the reference numeral 10 . The compression ring assembly 10 includes a compression ring 20 , a plurality of contact shoes 50 adjacent to the compression ring 20 , and a plurality of piston arrangements 40 , wherein the compression ring 20 includes a plurality of interconnected compression ring segments 22 The effective inner surface 36 of the plurality of piston devices 40 is placed between each contact shoe 50 and the pressure ring 20 . In use, the ferrule 20 and contact shoes 50 surround electrodes (not shown) used in an electric arc furnace (not shown).
[0056] The compression ring 20 according to the specific embodiment is a circular ring when viewed from above, two adjacent compression ring segments 22 of which are shown in FIGS. 1 and 2 . Each ferrule segment is arcuate in plan view and includes an outer surface 3...
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The invention provides for a pressure ring assembly [10] suitable for use in an electric arc furnace, wherein the pressure ring assembly [10] comprises at least two pressure ring segments [22] engaging each other, at least one contact shoe [50] arranged between the pressure ring [20] and an electrode, and a piston arrangement [40] between the pressure ring segment [22] and the contact shoe [50] for forcing the contact shoe [50] into electrical contact with the electrode. The pressure ring assembly [10] is characterised therein that it is made of a metal alloy wherein a first metal of the alloy is copper, and a second metal is selected from a group comprising of chrome and silver. The pressure ring assembly [10] is further characterised therein that each pressure ring segment [22] includes two tapered engagement formations [27] defined within the pressure ring segment [22] and being adapted to be engaged by complimentarily tapered connecting means [60] such that the pressure ring segments [22] are drawn towards each other during installation of the pressure ring assembly. The pressure ring assembly [10] further provides for a sealing arrangement between the pressure ring and the contact shoe [50].
Description
[0001] The present invention is a divisional application of the invention patent application No. 200580006485.4 filed on January 19, 2005, entitled "Pressing Ring Assembly for Electric Arc Furnace". field of invention [0002] The present invention relates to a pressure ring assembly suitable for an electric arc furnace, especially but not exclusively to a pressure ring assembly suitable for use on the lower part of an electrode column. Background technique [0003] Electric arc furnaces are commonly used in the iron and steel alloy production industry during pyrometallurgical smelting operations. An electric arc furnace includes one or more electrodes extending into the electric arc furnace and, in use, disposed proximate to a furnace load for supplying electrical power during a smelting operation. A transformer is typically placed outside the arc furnace from which power is transferred to the electrodes by means of contact shoes arranged circumferentially around and releas...
Claims
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IPC IPC(8): H05B7/10
Inventor 雅克·文特尔
Owner METIX (PTY) LTD