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Method for sealing of gaps in a contact shoe ring and sealing arrangement

A technology of sealing device and contact shoe, applied in the field of sealing the gap in the contact shoe ring

Inactive Publication Date: 2015-09-02
OUTOTEC FINDLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a sealing device which is able to adapt itself to changes in the gap width without losing its sealing efficiency

Method used

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  • Method for sealing of gaps in a contact shoe ring and sealing arrangement
  • Method for sealing of gaps in a contact shoe ring and sealing arrangement
  • Method for sealing of gaps in a contact shoe ring and sealing arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 A schematic illustration of an electric arc furnace 5 is shown. For reasons of simplicity, only one of three electrode systems 14 is shown.

[0034] refer to figure 1 with figure 2 , the electrode lower column assembly 3 is located at the lower part of the electrode system. The electrode lower column assembly 3 includes a contact shoe ring 2 and a pressure ring 6 . The contact shoe ring 2 is configured to be placed in contact with an electrode to conduct electrical current to the electrode. The contact shoe ring 2 comprises a plurality of contact shoe elements 10 , 11 . The contact shoe elements are arranged in a ring form to surround the electrodes. With the help of hydraulic bellows arranged in a pressure ring 6 surrounding the contact shoe ring 2 , the contact shoe is pressed against the steel mantle of the electrode.

[0035] refer to figure 2 with image 3 , each of the contact shoe elements 10, 11 has a first side edge 7, a second side edge 8 a...

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PUM

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Abstract

A method and sealing arrangement (22) for sealing of gaps (1) in a contact shoe ring (2). The sealing arrangement (22) comprises a refractory fabric (12) which is folded to a substantially U-form shape having a first branch portion (13) attached with refractory glue to the first side edge (7) of the first contact shoe element (10) and a second branch portion (14) attached with refractory glue to the second side edge (8) of the second contact shoe element (11). At least one refractory felt strip (15) is arranged between the first and second branch portions (13, 14) to fill the space therebetween. A cover strip (16) made of refractory fabric is attached with refractory glue to the side faces (9) of the first and second contact shoe element (10, 11).

Description

technical field [0001] The invention relates to a method for sealing a gap in a contact shoe ring. Furthermore, the invention relates to a sealing device for sealing a gap in a contact shoe ring. Background technique [0002] The contact shoe ring is part of the electrode lower column assembly of the electrode system of an electric arc furnace. The contact shoe ring is configured to be placed in contact with the electrode to conduct electrical current to the electrode. The shoe ring includes a plurality of shoe elements. The contact shoe elements are arranged in a ring form to surround the electrodes. The contact shoe is pressed against the steel cover of the electrode with the help of a number of hydraulic bellows arranged in a pressure ring surrounding the contact shoe ring. Each shoe element has two generally vertical side edges. Adjacent shoes in the shoe ring are arranged with a substantially vertical gap between adjoining side edges of adjacent shoe elements. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B7/12H05B7/105H05B7/06F27B3/08C21C5/52
CPCF27B3/08C21C5/5211F27D11/10H05B7/12H05B7/105F27D99/0073H05B7/06Y02P10/20
Inventor J·奥利拉T·凯仁恩
Owner OUTOTEC FINDLAND OY