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AssigneeRolls-Royce and Associates Limited
InventorsFrederick J. Gardner, Dewi J. Morris
Estimating the term…
A water cooled nuclear reactor comprises a reactor core, a primary water coolant circuit and a pressuriser arranged as an integral unit in a pressure vessel. The pressure vessel is divided into an upper chamber and a lower chamber by a casing, the reactor core and primary coolant circuit are arranged in the lower chamber and the pressuriser is arranged in the upper chamber. A movable diaphragm is positioned in the upper chamber, and is sealingly secured to the casing by a bellows arrangement to divide the upper chamber into a water filled space and a gas filled space. A plurality of surge ports interconnect the water space with the primary coolant circuit. The diaphragm moves to accommodate changes in the volume or pressure of the water in the primary coolant circuit and water space. The diaphragm is loaded by springs and dampers to prevent oscillation of the diaphragm. Alternatively the diaphragm may be an elastic membrane.
A water cooled nuclear reactor comprising a pressure vessel, a reactor core, a primary water coolant circuit, a pressurizer, the reactor core and at least a portion of the primary water coolant circuit being located in a pressure vessel, the primary water coolant circuit being arranged to cool the reactor core, the pressurizer having a diaphragm and a pressurizer pressure vessel, the diaphragm being movable and being sealingly secured to the pressurizer pressure vessel to divide the pressurizer pressure vessel into a first water space and a second fluid space, the second fluid space being arranged to contain a gas, and at least one surge port means which communicates between the pressurizer and the primary water coolant circuit to connect the first space of the pressurizer with the primary water coolant circuit, the diaphragm being movable so as to allow changes in the volume or pressure of the water in the first space of the pressurizer and the primary water coolant circuit, sealing means interconnecting and securing the diaphragm to said pressurizer pressure vessel to form a seal and for allowing relative movement between said diaphragm and said pressurizer pressure vessel.
A water cooled nuclear reactor comprising a pressure vessel, a reactor core, a primary water coolant circuit, a pressurizer, the reactor core and at least a portion of the primary water coolant circuit being located in a pressure vessel, the primary water coolant circuit being arranged to cool the reactor core, the presurizer having a diaphragm and a pressurizer pressure vessel, the diaphragm being movable and being sealingly secured to the pressurizer pressure vessel to divide the pressurizer pressure vessel into a first water space and a second fluid space, the second fluid space being arranged to contain a gas, and at least one surge port means which communicates between the pressurizer and the primary water coolant circuit to connect the first space of the pressurizer with the primary water coolant circuit, the diaphragm being movable so a to allow changes in the volume or pressure of the water in the first space of the pressurizer and the primary water coolant circuit, the reactor core, the primary water coolant circuit and the pressurizer being arranged as an integral unit enclosed by an integral pressure vessel, at least one casing being located in the integral pressure vessel to substantially divide the integral pressure vessel into a first chamber and a second chamber, the pressurizer being located in the first chamber, the reactor core and the primary water coolant circuit being located in the second chamber.
A pressurizer for a water cooled nuclear reactor comprising a pressure vessel, a diaphragm, the diaphragm being movable and being sealingly secured to the pressure vessel to divide the pressure vessel into a first space and a second space, sealing means being provided to interconnect and secure said diaphragm to the pressure vessel to form a seal and to allow relative movement between the diaphragm and the pressure vessel, the first space being arranged to interconnect with the water cooled nuclear reactor for the supply of water therebetween, the second space being arranged to contain a gas, the diaphragm being movable so as to allow changes in the volume or pressure of the water in the first space of the pressurizer and the water cooled nuclear reactor.
A pressurizer for a water cooled nuclear reactor comprising a pressure vessel, a diaphragm, the diaphragm being movable and being sealingly secured to the pressure vessel to divide the pressure vessel into a first space and a second space, the first space being arranged to interconnect with a water cooled nuclear reactor for the supply of water therebetween, the second space being arranged to contain gas, the diaphragm being movable so as to allow changes in the volume or pressure of the water in the first space of the pressurizer and the water cooled nuclear reactor, said diaphragm being sealingly secured to the pressure vessel by bellows means.
Dependencies are inferred from the claim text.