Closure assembly for closing a gap remaining between the first blade and the final blade in a cascade inserted in a circumferential groove of the fluid machine, and a fluid machine constituted by the closure assembly

摘要

The assembly has front and rear side parts (30, 32), by which a projection of a peripheral nut (10) that is formed with an undercut is jammed. A protection unit (36) protects the side parts against unhinging from the peripheral nut. The protection unit is pin-like designed, where the side parts are detachably connected with each other in a force-fit manner. The protection unit is designed as intermediate parts that are inserted between the side parts.