Patent ID: 7716925
Filing Date: 2010-05-18
Classification: F16D

Abstract:
1. A closure for a hydrodynamic turbomachine having a cavity, the closure comprising: a closure body for sealing the cavity that is to be closed; a fusible safeguard element inserted into the closure body for closing a through-opening in the closure body; the closure body comprising a bushing with a continuous bore and the bushing being inserted into the through-opening of closure body at an axial end, the continuous bore and the region of the through-opening that is axially adjacent to the bushing being aligned flush with each other, wherein the fusible safeguard element completely fills the continuous bore of the bushing over an entire cross section thereof along a predetermined axial length, wherein the fusible safeguard element is a fusible solder that is soldered in the continuous bore of the bushing, wherein the bushing is disposed at an axial end in which the fusible solder is positioned, wherein the bushing has a step-shaped expansion of the cross section so that a portion of the fusible solder comes to rest on the bushing in the axial direction so that an axial thrust force can be transmitted from the fusible solder onto the bushing, wherein the step-shaped expansion is designed in that the axial end facing the interior of the cavity when the closure is inserted into a wall bounding the cavity and the fusible solder projects axially beyond the step-shaped expansion, and wherein the fusible safeguard element has a circumferential edge that is completely enclosed by the closure body.