| 摘要 |
The invention describes a refractory component (1, 4) provided with means of injecting or conveying (5, 16) gas and means of delivering said gas from an external wall of the component to said means of injection (5, 16), the means of delivery of the gas comprising a part of enlarged cross-section (7, 17) extending from an external wall of the component and a part of reduced cross-section (8, 18) communicating, at one end, with the inner end of the part of enlarged cross-section (7, 17) and, at the other end, with the means of injecting or conveying gas (5, 16), the said component also comprising a seal (12, 22) fitted against the inner end of the part of enlarged cross-section, said seal (12, 22), comprising an orifice at least partially in register with the communicating orifice (11, 21) between the parts of enlarged and reduced cross-section, which is characterised in that the seal (12, 22) presents a cross-section substantially similar to the cross-section of the enlarged part (7, 17). According to another of its aspects, the present invention relates to an assembly including a refractory component as described above and a gas delivery line (9, 19), wherein one end of the gas delivery line is engaged in the part of enlarged cross-section which holds a seal (12, 22) in compression against the side walls of the part of enlarged cross-section. |
