| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a turbine casing including a support ring and a cover ring for guide vanes, wherein the support ring and the cover ring are spaced a distance apart by means of spacer elements to form a guide vane device, wherein a fastening screw passes through each spacer element, and is screwed into the support ring and the cover ring, and wherein each opening for housing a head part of the fastening screw is provided in the carrier ring and cover ring. <P>SOLUTION: At least one securing recess 20a, 20b is provided in the support ring and/or cover ring on the outside circumference of the opening. The securing recess is provided to accommodate material M of the screw head 16a. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
