Dual shut-off valve
AssigneeBWXT Advanced Technologies LLC
InventorJames Brian Inman
Life of this patent
Estimating the term…
Abstract
A dual shut-off valve including a valve body defining an interior cavity and a flow tube passing therethrough, an outer cylinder including a body portion defining an interior cavity and a through hole passing therethrough, the outer cylinder being rotatably disposed within the interior cavity of the valve body, and an inner cylinder including a body portion defining a through hole passing therethrough, the inner cylinder being rotatably disposed within the interior cavity of the outer cylinder, wherein the inner cylinder and the outer cylinder are both rotatable between a first position in which the through holes of the outer cylinder and the inner cylinder are aligned with the flow tube and a second position in which the through holes of the outer cylinder and the inner cylinder are transverse to the flow tube.
Claims20
A dual shut-off valve comprising:
- a valve body defining an interior cavity and a flow tube passing therethrough;
- an outer cylinder including a body portion defining an interior cavity and an outer cylinder through hole passing therethrough, the outer cylinder being rotatably disposed within the interior cavity of the valve body;
- and
- an inner cylinder including a body portion defining an inner cylinder through hole passing therethrough, the inner cylinder being rotatably disposed within the interior cavity of the outer cylinder,
- wherein the inner cylinder and the outer cylinder are both rotatable between a first position in which a longitudinal center axis of the outer cylinder through hole and a longitudinal center axis of the inner cylinder through hole are aligned with a longitudinal center axis of the flow tube, and a second position in which the longitudinal center axes of the through holes of the outer cylinder and the inner cylinder are not aligned with the longitudinal center axis to the flow tube;
- wherein the inner cylinder is rotatable with respect to the valve body independently of the outer cylinder.
A nuclear reactor disposed with a containment structure, comprising:
- a reactor core disposed within a pressure vessel;
- a coolant outlet line passing through both the pressure vessel and the containment structure;
- and
- a first dual shut-off valve both disposed within the containment structure and in fluid communication with the coolant outlet line, comprising:
- a valve body defining an interior cavity and a flow tube passing therethrough;
- an outer cylinder including a body portion defining an interior cavity and an outer cylinder through hole passing therethrough, the outer cylinder being rotatably disposed within the interior cavity of the valve body;
- and
- an inner cylinder including a body portion defining an inner cylinder through hole passing therethrough, the inner cylinder being rotatably disposed within the interior cavity of the outer cylinder, wherein the inner cylinder and the outer cylinder are both rotatable between a first position in which a longitudinal center axis of the outer cylinder through hole and a longitudinal center axis of the inner cylinder through hole are aligned with a longitudinal center axis of the flow tube, and a second position in which the longitudinal center axes of the through holes of the outer cylinder and the inner cylinder are not aligned with the longitudinal center axis to the flow tube;
- wherein the inner cylinder of the first dual shut-off valve is rotatable with respect to the valve body independently of the outer cylinder.
Dependencies are inferred from the claim text.