CONTINUOUS TEMPERATURE MEASURING DEVICE AND RH APPARATUS INCLUDING THE SAME

Title:

CONTINUOUS TEMPERATURE MEASURING DEVICE AND RH APPARATUS INCLUDING THE SAME

Document Type and Number:

WIPO Patent Application WO/2015/080443

Kind Code:

A1

Abstract:

Disclosed are a continuous temperature measuring device used in a Ruhrstahl-Heraeus (RH) process of performing vacuum degassing among steel making processes in an ironworks and an RH apparatus including the same. The RH apparatus includes a sensor hole formed at a lower vessel of a vacuum vessel; a continuous temperature measuring device mounted on the sensor hole and including a light-to-temperature converter measuring temperature based on received light, a light guide rod receiving light from a measurement target, an optical fiber transferring the light received by the light guide rod to the light-to-temperature converter, a connector connecting the optical fiber to the light guide rod while maintaining straightness of the optical fiber, a primary protection tube enclosing an outer peripheral surface of the light guide rod, a flexible heat resistant tube protecting the optical fiber, and a joint connected to the flexible heat resistant tube and provided with a cooling gas injection tube; and a cooling gas supply unit supplying cooling gas to the cooling gas injection tube.

Inventors:

YOU JONG-AN (KR)
PARK KWANG-SUN (KR)
KIM YEONG-IN (KR)

Application Number:

PCT/KR2014/011308

Publication Date:

June 04, 2015

Filing Date:

November 24, 2014

Export Citation:

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Assignee:

WOOJIN ELETRO NITE INC (KR)
HERAEUS ELECTRO NITE INT (BE)

International Classes:

G01J5/28; C21C7/10; G01J5/02; G01K13/00

Domestic Patent References:

WO2000050863A1

2000-08-31

Foreign References:

JP2001091362A	2001-04-06
US6190037B1	2001-02-20
US20070268477A1	2007-11-22
US6235084B1	2001-05-22
KR100816634B1	2008-03-27
US20070268477A1	2007-11-22

Other References: