Sliding Closure for Metallurgical Vessels

Abstract

Disclosed is a sliding closure for metallurgical vessels, comprising at least two fireproof closing parts that can be braced against each other by means of spring elements ( 5 ). At least one measuring apparatus ( 10 ) is provided for measuring the distance of the housing parts or the closing parts from each other regarding the displacement thereof transversal to the sliding areas while at least one temperature gauge is provided which is connected to an evaluation unit ( 20 ). The apparatus ( 10 ) for measuring the position of the closing parts encompasses exploring coils ( 12, 13 ) that are mounted next to each other and a core ( 15 ) located in a central opening ( 11 a ) in said coils, each of which is arranged in one of the two housing parts and which jointly form a differential throttle. The core ( 15 ) can be adjusted perpendicular to the sliding areas when the distance between the two housing parts changes, whereby a tension can be generated which can be transmitted to the evaluation unit ( 20 ). Said measurement makes it possible to improve the operational safety of such a sliding closure.

1 . Sliding closure for metallurgical vessels, having at least two refractory closing parts that can be tensioned against each other, which are each displaceably arranged with respect to each other in a housing part on sliding areas, while spring elements ( 5 ) are contained in at least one of the housing parts to tension the closing parts, while at least one measuring apparatus ( 10 ) to measure the distance of the housing parts and/or the closing parts with respect to each other in terms of their change transverse to the sliding areas and at least one temperature-measuring apparatus are provided, said measuring apparatuses ( 10 ) being attached to an evaluation unit ( 20 ), characterised in that the measuring apparatus ( 10 ) for measuring the closing parts position comprises exploring coils ( 12 ,  13 ) mounted next to each other and a core ( 15 ) located in a central opening ( 11   a ) in said coils, each of which is arranged in one of the two housing parts and which jointly form a differential throttle. The core ( 15 ) can be adjusted transverse to the sliding areas when the distance between the two housing parts changes, whereby a voltage can be generated which can be transmitted to the evaluation unit ( 20 ). 
   
   
       2 . Sliding closure according to  claim 1 , characterised in that two exploring coils ( 12 ,  13 ) mounted next to each other on a coil body ( 11 ) built into one of the two housing parts and the core ( 15 ) which is longitudinally displaceable in the axial direction of the coil body ( 11 ) are provided, while the core ( 15 ) is displaceable from a central position with respect to the exploring coils ( 12 ,  13 ) if there is any change in the distance of the two housing parts transverse to the sliding areas. 
   
   
       3 . Sliding closure according to  claim 2 , characterised in that the measuring apparatus ( 10 ) for measuring the position of the closing parts is assigned to a guide unit ( 2 ) built into the fixed housing part ( 1 ), said guide unit having a spring-loaded guide pin ( 4 ), which carries at least one of the guide elements which can be pressed onto a guideway of the displaceable housing parts, while one of the two measuring apparatus parts (coil body with exploring coils/core) which are movable relative to each other is built into the guide pin ( 4 ). 
   
   
       4 . Sliding closure according to  claim 3 , characterised in that the guide pin ( 4 ) carries the guide element or guide elements on its lower end and at its perimeter is surrounded by one of the spring elements ( 5 ) which can be pressed from below onto the guide elements on the guideways of the displaceable housing parts, while the magnetic core ( 15 ) is built into the front face of the upper end of the guide pin ( 4 ) by means of a non-magnetic tension rod ( 16 ) and is positioned in the fixed coil body ( 11 ) located above this. 
   
   
       5 . Sliding closure according to  claim 1 , characterised in that one of the two housing parts is provided with guideways parallel to the sliding areas and the other with guide elements which can be pressed onto the guideways.