Sub-lance assembly for sampling and temperature-measuring of...

Details Sub-lance assembly for sampling and temperature-measuring of... Sub-lance assembly for sampling and temperature-measuring of...

G - Physics

01

K

73/103, 73/123

G01K 1/02 (2006.01) G01N 1/12 (2006.01) G01N 21/31 (2006.01)

Patent

CA 1135531

SUB-LANCE ASSEMBLY FOR SAMPLING AND TEMPERATURE-MEASURING OF MOLTEN METAL DURING REFINING THEREOF ABSTRACT OF THE DISCLOSURE A sub-lance assembly for sampling and temperature- measuring of a molten metal during refining thereof in a top-blowing oxygen converter, which comprises: a sub-lance having a concentric three-pipe structure comprising a gas supply pipe, a water supply pipe and a water discharge pipe with said gas supply pipe as the center, said sub- lance being rotatably and releasably fitted to a sub-lance carriage in the substantially vertical position; a probe fitted to the lowermost end of said gas supply pipe, for sampling and temperature-measuring of a molten metal during refining thereof; an inner cylinder fixed to the upper end portion of said sub-lance; an outer cylinder, having a water supply branch pipe and a water discharge branch pipe, rotatably engaging with said inner cylinder, said outer cylinder being connected to said sub-lance carriage; said water supply pipe, said inner cylinder, said outer cylinder and said water supply branch pipe communicating with each other in a water-tight manner, said water discharge pipe, said inner cylinder, said outer cylinder and said water discharge branch pipe communicating with each other in a water-tight manner; a drive mechanism, fitted onto the - 1 - outer surface of said outer cylinder, for rotating said sub-lance around the axial line thereof; and, a sub-lance rotation angle detector, fitted to the tip of the axle of rotation of said drive mechanism, for detecting the angle of rotation of said sub-lance. - 2 -

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