G - Physics – 01 – L
Patent
G - Physics
01
L
340/142
G01L 9/10 (2006.01) C21B 7/10 (2006.01) G01L 9/00 (2006.01) G01M 3/26 (2006.01)
Patent
CA 1127263
ABSTRACT OF THE DISCLOSURE The present invention provides improvements introduces in the detection of leakages of the cooling liquid in blastfur- nace nozzles, based on the system of measuring the variations in the differential pressure of the cooling liquid using an elec- tronic information equipment with the technology normally employed in inductive-type systems and capable of detecting minor liquid leakages which are not detectable with conventional control means, essentially characterised in that detection assemblies are incor- porated at the cooling liquid inlet and outlet circuits of the installation, each one of which detection assemblies comprising a cylindrical housing surrounding a fixed annular hood having a double wall filled with mercury which serves as a guide for the displacements of the other movable hood, inverted with respect to the fixed hood, and provided with a counterweight and an axially projecting stem, the free end of which incorporates a core of mag- netic material housed in the influence zone of the high frequency inductive circuit, the mercury which fills the double wall of the fixed hood maintaining the volumes of the cooling liquid in the interior and exterior of both hoods separated and independent, which liquid penetrate into their respective chambers through ducts provided with the corresponding by-pass valves, conveniently connected to the cooling system; furthermore characterised in that electronic means have been provided which process the elec- tric signals of the inductive circuit in order to activate optical and/or acoustic alarms as well as information recording means.
335478
Fernandez Aurelio Diaz
Garcia de Guadiana Adolfo Tornos
Ruiz de La Pena Alejandro Felgueroso
Empresa Nacional Siderurgica S.a.
Marks & Clerk
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