초록 ▼

A high temperature, high pressure chemical digestion vessel comprising an inner container within which digestion is to take place under high temperature and high pressure conditions. The container is provided with a vent. A replaceable, rupturable pressure release disk is provided having a predeterm

A high temperature, high pressure chemical digestion vessel comprising an inner container within which digestion is to take place under high temperature and high pressure conditions. The container is provided with a vent. A replaceable, rupturable pressure release disk is provided having a predetermined rupture pressure for being sealingly interposed in covering relation to the vent to seal the container and thereby enclose a substance to be digested in the container. The disk ruptures and releases pressure within the container if pressure within the container reaches the predetermined rupture pressure. The pressure release disk comprises a flat sheet material. A seal cap is provided for holding the pressure release disk in sealing relation to the vent in the container. An outer pressure resisting-casement is provided for receiving the container therein and providing support to the container. In one embodiment, a pressure chamber is defined between the seal cap and the pressure release disk to transmit pressure information to a pressure sensor exterior to the vessel and to isolate a test sample from the exterior of the vessel.

대표청구항 ▼

A high temperature, high pressure chemical digestion vessel comprising: (a) a microwave transparent inner container having a bottom and integrally-formed cylindrical sidewalls, the upper edge of which sidewalls defines a cylindrical mouth for receiving material to be chemically digested under high p

A high temperature, high pressure chemical digestion vessel comprising: (a) a microwave transparent inner container having a bottom and integrally-formed cylindrical sidewalls, the upper edge of which sidewalls defines a cylindrical mouth for receiving material to be chemically digested under high pressure and high temperature; (b) an enlarged-diameter flange integrally-formed with the cylindrical mouth of said inner container; (c) a seal cap having a pressure vent therethrough and an annular seat for being positioned and seated on the flange of said inner container without mechanical attachment; wherein said flange includes a raised rim integrally formed around the periphery of said flange and defining an interior, lower shoulder for receiving a pressure release disk, said seal cap including: (1) a centrally-disposed bottom surface for being received into the mouth of said inner container and supporting said pressure release disk in the mouth of said inner container; (2) an integrally-formed peripheral shoulder of reduced thickness for being positioned on and being supported on the lower shoulder of said inner container with said pressure release disk positioned therebetween; and (3) wherein the peripheral shoulder of said seal cap defines an annular groove for mating with the lower shoulder of said flange in sealing relation thereto, said annular groove having a bearing edge for sealingly bearing against said pressure release disk around its entire periphery; said annular groove and the lower shoulder of said flange mating together with said pressure release disk therebetween to provide a sealing surface; (d) a microwave transparent outer casement comprising a bottom and integrally-formed cylindrical sidewalls, the upper edge of which outer casement defines a cylindrical mouth for supporting said enlarged flange of said inner container, said sidewalls of said outer casement being of a diameter to receive said inner container therein, and a casement cap being attachable to the upper edge of said cylindrical sidewalls of said outer casement and tightened into pressure-resisting relation with said inner container; (e) the replaceable, rupturable pressure release disk formed of a flat sheet material having a predetermined rupture pressure; said pressure release disk and said seal cap cooperating to seal the inner container and thereby enclose a substance to be digested in said inner container, said pressure release disk adapted to rupture and release pressure within said inner container if pressure within said inner container reaches said predetermined rupture pressure.