公开(公告)号：EP2828565B1

公开(公告)日：2016-05-18

申请号：EP13711598.6

申请日：2013-03-12

申请人： VOSS Fluid GmbH

发明人： SCHRÖER, Bettina ,  BERGHAUS, Gerd ,  POTT, Harald

IPC分类号： F16L19/10

CPC分类号： F16L19/10

公开(公告)号：EP2828565A1

公开(公告)日：2015-01-28

申请号：EP13711598.6

申请日：2013-03-12

申请人： VOSS Fluid GmbH

发明人： SCHRÖER, Bettina ,  BERGHAUS, Gerd ,  POTT, Harald

IPC分类号： F16L19/10

CPC分类号： F16L19/10

摘要： The present invention relates to a mounting system for a pipe screw connection having a cutting ring, consisting of at least one connection stub (1) having a bore (2), having an inner cone (4) which is at the front in the plug-in direction (E) of a pipe (3) to be connected and has an inner narrowed end, and a union nut (9), to be pushed onto the pipe (3) to be connected, having an inner thread (13) in its through-passage opening (10), and also having a cutting ring (15), arranged between the connection stub (1) and the union nut (9) on the pipe (3) to be connected, having at least one cutting edge (15a) with an outer contour (17) facing the inner cone (4). Formed at the rear end, in the plug-in direction (E), of the outer contour (17), is a circumferential stop (20, 21). For preliminary mounting of the cutting ring (15) on the pipe (3), an annular spacer (23), circumferentially enclosing the cutting ring (15), is arranged between the circumferential stop (20) of the cutting ring (15) and a front end, as seen in the plug-in direction (E), of the connection stub (1), the width (Y) of said annular spacer (23) allowing an axial displacement travel between the connection stub (1) and the cutting ring (15), the union nut (9) covering said displacement travel during final mounting of the cutting ring (15) in the pipe screw connection, beyond a point of a perceptible rise in force of a tightening force to be applied during the preliminary mounting. During the preliminary mounting of the cutting ring (15) on the pipe (3), after the outer contour (17) has been introduced into the inner cone (4) as far as mutual abutment of the outer contour (17) against the inner cone (4) and of the union nut (9) against the cutting ring (15), the union nut (9) and the connection stub (1) are axially displaceable in relation to one another about a tightening travel (X) such that the cutting edge (15a) can penetrate into the pipe (3) in such a way that the cutting edge (15a) penetrates to a depth of at least 0.1 mm, and at the end of the tightening travel (X), the connection stub (1) butts against the abutment surface (21) of the cutting ring (15) by means of the spacer (23), such that the point of the marked rise in the tightening force is produced on account of the mutual abutment.