| 摘要 |
<p>The invention is directed to a pipe end sealing structure (1) comprising a first pipe element (2) having a cylindrical metal pipe body with a first annular end surface (12) at at least one open pipe end adapted to be a sealing support surface, a sealing (4) having a metal sealing body with a first sealing surface (13) facing towards first annular end surface (12) and being adapted to rest at least partially on the first annular end surface (12), a first flange (3) extending radially outwardly from an outer circumference of the first pipe element (2), urging means (7, 8, 9) adapted for urging the sealing (4) and the first flange (3) in an axial direction towards each other, so that the sealing (4) is urged with its first sealing surface (13) against the first annular end surface (12) of the first pipe element (1), wherein the first annular end surface (12) of the cylindrical metal pipe body is a tapered annular surface (12) and the first sealing surface (13) of the metal sealing body is a conical inner circumferential surface (13) facing towards and resting at least partially on the first tapered annular end surface (12) of the first pipe element (2). The invention is characterized in that the first flange (3) being fixed on the outer circumference of the first pipe element (2) at least against axial movement towards the open pipe end, the urging means (7, 8, 9) are adapted for urging the sealing (4) and the first flange (3) with such an urging force towards each other, that the connection of the sealing (4) and the first pipe element (1) is gas tight between the conical inner circumferential surface (13) and the tapered annular surface (12) for high pressure gases with a high pressure above 250 bar, and the metal pipe body and the metal sealing body have a rigidity sufficient to withstand this high pressure of the high pressure gas and to withstand an urging force of the urging means (7, 8, 9) sufficient to make the connection gas tight..</p> |
