Patent ID: 7296827

Claim:
A releasable connection arrangement, with a non-positive and positive fit, for two rotationally symmetrical components, at a connection point, especially for creating a leak-proof connection between closure elements on power plant valves, the connection arrangement comprises: a first component, which has a collar projecting radially outwards with a first clamping surface and a first bearing surface; a socket disposed at an open end of a second component for retaining the collar by gripping round it axially; a second bearing surface formed in the socket to co-operate with the first bearing surface; a groove formed either in the first or in the second bearing surface to receive a seal; a second clamping surface formed in the socket at an axial distance from the second bearing surface, and with a number of ring wedge-shaped tensioning members which are distributed over the circumference and are disposed such that first wedge surfaces abut the first clamping surface and second wedge surfaces abut the second clamping surface; wherein an expanding ring is provided, abutting third wedge surfaces of the tensioning members with an outer expanding surface, and tensioning means are provided, acting between the expanding ring and one of the components, with which the expanding ring can be moved axially and the tensioning members can be moved radially or radially/axially.