Pressure Vessel and Door Actuator
AssigneeNational Oilwell Varco, L.P.
InventorsMark C. Euwer, Barry G. Jansma, Thomas Tuan-Huy Do
Life of this patent
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Abstract
A door assembly for a pressure vessel includes a door, a hub for receiving the door, and an annular seal to seal therebetween. A hinge arm is coupled to the hub and to the door and is pivotable relative to the hub about a hinge axis. A door actuator having an elongate member extending along an actuator axis is spaced-apart from the hinge axis and coupled to the hub and to the hinge arm. The elongate member travels with the hinge arm when the arm pivots relative to the hub, and rotates about the actuator axis.
Claims20
A pressure vessel door assembly comprising
- a door;
- a hub configured for attachment on the pressure vessel and configured to receive the door;
- an annular seal configured to engage sealingly between the door and the hub;
- a hinge arm coupled to the hub and to the door and configured to pivot relative to the hub about a first hinge axis;
- a door actuator having an elongate member extending along an actuator axis spaced-apart from the first hinge axis and coupled to the hub and coupled to the hinge arm, the elongate member configured to travel with the hinge arm when the hinge arm pivots relative to the hub, and configured to rotate about the actuator axis;
- and
- wherein the door actuator is configured to cause the seal to engage sealingly the hub.
A pressure vessel door assembly comprising
- a door;
- a hub configured for attachment on the pressure vessel and configured to receive the door;
- an annular seal mounted on the door and configured to engage sealingly between the door and the hub;
- a hinge mechanism coupled between the door and the hub and comprising:
- a pair of pivot blocks attached to the hub, the pair of pivot blocks including a first and a second pivot block;
- a pair of support blocks attached to the door, the pair of support blocks including a first and a second support block;
- and
- a hinge arm extending from the pair of pivot blocks to the pair of support blocks and rotationally coupled to the pair of pivot blocks, defining a first hinge axis, the hinge arm configured to pivot relative to the hub about the first hinge axis;
- and
- a door actuator having an elongate member extending along an actuator axis and coupled to the hub and to the hinge arm, the elongate member configured to travel with the hinge arm when the hinge arm pivots relative to the hub, and configured to rotate about the actuator axis;
- wherein the door actuator is configured to cause the seal to engage sealingly the hub.
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Dependencies are inferred from the claim text.