F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 1/12 (2006.01) F27B 1/16 (2006.01) F27B 1/24 (2006.01) F27D 9/00 (2006.01)
Patent
CA 2575225
A double chamber single directional spiral tuyere for blast furnaces is disclosed. The tuyere includes a body unit, a spiral unit and a cover unit, with a body chamber having a body nose passage and a body main passage defined in the body unit, and a nose chamber having first, second, third and fourth spiral passages defined in both the spiral unit and the cover unit. The tuyere further includes a tunnel, which is formed in the spiral unit and the cover unit and connects a cooling water inlet to the first spiral passage. In the tuyere, a reverse--turning part, at which the flowing direction of cooling water is reversed at an angle of 180°, is eliminated from a cooling passage defined in the nose of the tuyere. Thus, cooling water can circulate in a single direction in the tuyere, resulting in efficient circulation of cooling water, reducing pressure loss and enabling cooling water to reach the nose of the tuyere, thereby providing maximum cooling performance.
Borden Ladner Gervais Llp
Seoul Engineering Co. Ltd.
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