Tuyere stock and compensator joint therefore
First Claim
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1. An expansion joint device for interconnecting fluid conducting conduits provided with a refractory lining comprising:
- open ended expansible bellows means, said bellows means being adapted to be connected at its oppositely disposed ends to the exterior of the conduits to be coupled to render the joint between the facing ends thereof hermetic;
at least a first protective layer of heat resistant material surrounding at least a portion of the outer diameter of extensions of the conduits to be coupled, said first protective layer bridging the joint between the conduits; and
a shielding tube, said shielding tube being spatially displaced from said bellows means and being coaxial with the bellows means and the conduits to be coupled when the conduits are in an undeflected condition, said shielding tube being positioned within the bellows means and radially outwardly with respect to said first protective layer, said shielding tube extending axially in both directions with respect to the joint between the conduits and being supported for movement relative to at least one of the joint defining conduit facing ends.
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Abstract
A hermetic expansion joint for use between conduits lined with refractory material and a tuyere stock for blast furnaces utilizing a plurality of such expansion joints. The expansion joints include a bellows coaxial with and connected to the exterior of the conduits to be coupled and, located within the bellows, a shielding tube and a protective layer of compressible refractory material. The compressible refractory layer is positioned within the shielding tube and bridges the joint between the conduits.
127 Citations
20 Claims
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1. An expansion joint device for interconnecting fluid conducting conduits provided with a refractory lining comprising:
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open ended expansible bellows means, said bellows means being adapted to be connected at its oppositely disposed ends to the exterior of the conduits to be coupled to render the joint between the facing ends thereof hermetic; at least a first protective layer of heat resistant material surrounding at least a portion of the outer diameter of extensions of the conduits to be coupled, said first protective layer bridging the joint between the conduits; and a shielding tube, said shielding tube being spatially displaced from said bellows means and being coaxial with the bellows means and the conduits to be coupled when the conduits are in an undeflected condition, said shielding tube being positioned within the bellows means and radially outwardly with respect to said first protective layer, said shielding tube extending axially in both directions with respect to the joint between the conduits and being supported for movement relative to at least one of the joint defining conduit facing ends. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A tuyere stock for use in the delivery of hot air from a source to a blast furnace comprising:
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a tuyere, said tuyere being adapted to be at least partly inserted through a port in the wall of a furnace; a tuyere nozzle; means coupling the upstream end of said tuyere to the downstream end of said nozzle; a curved conduit section; means coupling the upstream end of said nozzle to the downstream end of said curved conduit section; and linear conduit means coupling the upstream end of said curved conduit section to the source, said linear conduit means including at least a first straight conduit with compensator connections at the opposite ends thereof, said compensator connections each comprising; open ended expansible bellows means, said bellows means being adapted to be connected at a first end to the exterior of said straight conduit and at the second end to the exterior of a facing hot air transmission conduit to render the joint between said straight and transmission conduits hermetic; at least a first generally annular protective layer of compressible refractory material, said protective layer of refractory material bridging the joint between the conduits; and a rigid shielding tube, said shielding tube being spatially displaced from said bellows means and being coaxial with the bellows means when the tuyere stock is is an undeflected condition, said shielding tube being positioned within the bellows means and radially outwardly with respect to said first protective layer of refractory material, said shielding tube extending axially in both directions with respect to the joint between the conduits and being supported for movement relative to at least one of the joint defining conduit facing ends. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification