| 摘要 |
An end cover for cylindrical pressure vessels, e.g. a vacuum impregnation vessel or autoclaves, which at the opening have members for keeping a lid fitting tightly against the opening, said members contrary to previously known and complicated members may be manufactured by means of generally known working processes and machine tools. The edge of the opening in the vessel 1 and the lid 3 both have a radially outwards extending annular flange 2, 4, said flanges having cooperating contact surfaces 5 and each a sloping surface, whereby the width of the two assembled flanges 2, 4 is decreasing towards the outer edge. The end cover further comprises a clamping ring 6 running almost around the assembled flanges 2, 4 and which ends in two free ends 8. The clamping ring 6 has a slot 7 which is open towards the centre and corresponding to the cross section of the assembled flanges 2, 4, and the circumference of the clamping ring 6 is smaller than the outer circumference of the flanges 2, 4 such that the free ends 8 of the ring 6 may be pulled towards each other, when the flanges 2, 4 are received in the slot 7 of the ring 6. The free ends 8 of the clamping ring 6 may be connected to driving means 9 of a hydraulic type for locking the retaining ring 6 around the flanges 2, 4. <IMAGE> |
