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US 8,708,307 B2Granted
Elongated trunnion for high pressure ball valves
AssigneeHalliburton Energy Services, Inc.
InventorPeter Derek Walter Inglis
Life of this patent
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Abstract
A ball valve comprises a ball rotatably disposed within a housing, and a trunnion plate supporting the ball. The trunnion plate comprises a trunnion plate hole, and a trunnion plate shoulder disposed on a surface of the trunnion plate about the trunnion plate hole, where the trunnion plate shoulder has a length in the axial direction of the ball valve that is greater than a width in the radial direction of the ball valve.
Claims20
A ball valve comprising:
- a ball rotatably disposed within a housing;
- and
- a trunnion plate supporting the ball, wherein the trunnion plate comprises:
- a trunnion plate hole, and
- a trunnion plate shoulder disposed on a surface of the trunnion plate about the trunnion plate hole, wherein the trunnion plate shoulder comprises an inward protrusion from an inner surface of the trunnion plate, wherein the inward protrusion extends towards a central longitudinal axis of the ball valve, wherein the inward protrusion protrudes from a flat innermost surface of the trunnion plate, and wherein the trunnion plate shoulder has a length in the axial direction of the ball valve that is greater than a width in the radial direction of the ball valve.
2 more elements
A method comprising:
- applying a load to a ball within a ball valve, wherein the ball valve is in a closed position, and wherein the ball valve comprises a trunnion plate supporting the ball, wherein the trunnion plate comprises:
- a trunnion plate hole, and
- a trunnion plate shoulder disposed on a surface of the trunnion plate about the trunnion plate hole, wherein the trunnion plate shoulder comprises an inward protrusion from an inner surface of the trunnion plate, wherein the inward protrusion extends towards a central longitudinal axis of the ball valve, wherein the inward protrusion protrudes from a flat innermost surface of the trunnion plate, and wherein the trunnion plate shoulder has a length in the axial direction of the ball valve that is greater than a width in the radial direction of the ball valve;
- and
- retaining the ball in the closed position against the load using the trunnion plate.
2 more elements
Dependencies are inferred from the claim text.