Improvements in vessels for high pressure fluids

Abstract

Abstract 726,709. Closures for resisting fluid pressure. CRANE CO. April 2, 1953, No. 9205/53. Class 123 (1). [Also in Group XXIX] A closure for a high pressure vessel 66 consists of an annular outer member 72 having an internal flange 90, the member being secured to a rim flange 74 surrounding the opening in the vessel by bolts 76, and an inner member 82 disposed in the opening and having upstanding studs 86 which pass through holes in the flange 90 and by means of which the members can be drawn together. A sealing ring 96, made for example of soft steel, iron, copper or other soft metal is located in the groove formed between a bevelled bearing surface 98 on the outer member and a convex bearing surface 94 on the inner member. To seal the vessel, the closure is placed in position and secured by nuts 78 on the bolts 76. Nuts 92 on the studs 86' are then tightened to expand ring 96 into sealing engagement with a bevelled bearing surface 70 formed about the edge of the opening. The shape of the ring 96 in its free state and that of the bearing surfaces 70 and 94 is such that only a line contact exists between them, moreover when the vessel is sealed the upper portion of the ring remains above the rim so that the tendency of the sealing surfaces to stick together when the vessel is unsealed is minimized. Modified means of securing the closure to the vessel and the application of the invention to the construction of pressure seal bonnet valves (see Group XXIX) are also described.

Inventors

• 👤 Kurt Emil Bruno Bredtschneider

Bibliographic Details