| 摘要 |
The present invention constitutes a sealing means for piping and equipment flanges, especially of the Camprofile-type. The gasket of the present invention comprises a sealing ring (100) and a centralization ring (120) to centralize the sealing ring on the flanges of piping or equipment. Preferably, the sealing ring and the centralization ring are concentric rings made of a metallic alloy. The sealing ring has an outer contour surface (118), a lower surface (115) and an upper surface (117), the upper and lower surfaces consisting, respectively, of lower and upper prolongations of the outer contour surface. The outer contour surface has a substantially L-shaped cross-section comprising an innermost portion (118a) and an outermost portion (118b) extending axial and a radial portion interconnecting the inner and the outer portions. The centralization ring (120) comprises an outer contour surface (128), an inner contour surface (126), a lower surface (125) and an upper surface (127). The inner contour surface (126) defines a central opening, which is substantially coincident with the innermost portion (118a) of the outer contour surface of the sealing ring (100), so that the latter can be fitted into the opening as far as the radial portion of its outer contour surface, making contact with the upper or lower surface of the centralization ring (120) (depending upon the side into which the ring is inserted). The lower and upper surfaces consist of respective lower and upper prolongations of the outer contour surface (128) and inner contour surface (126). In order for the sealing ring (100) to be duly retained in the centralization ring (120), when it is inserted into the latter, a deformation is made on the innermost portion (118a) of the outer contour surface of the sealing ring, forming a projection, so that the centralization ring can be retained between the projection and radial portion. Therefore, one can see that the present invention presents a solution by which the sealing ring is fitted into the centralization ring without the need to be separated and then welded.
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