| 摘要 |
<p>PCT No. PCT/EP92/02794 Sec. 371 Date Aug. 17, 1993 Sec. 102(e) Date Aug. 17, 1993 PCT Filed Dec. 3, 1992 PCT Pub. No. WO93/12365 PCT Pub. Date Jun. 24, 1993.The invention concerns a water-cooled casing for a hot-blast slide valve, in particular a slide valve in a pipe lined with refractory material. The casing has annular cooling-water ducts disposed concentrically with respect to each other in pairs, one downstream of the other with respect to the hot-air blast and on both sides of the space through which the sliding plate of the valve passes. The annular ducts are formed by two monobloc-construction casing components, each of which has two substantially annular hollows, the hollows being closed over by first and second annular components to form the ducts.</p> |
