Patent ID: 11885438
Assignee: LANCASTER FLOW AUTOMATION LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. A method of flowing a fluid through a choke valve, the method comprising:
flowing the fluid into a valve body of the choke valve;
focusing the fluid to flow into an orifice plate aperture of an orifice plate disposed in the valve body, the orifice plate defining a face, the orifice plate aperture extending through the face;
flowing the fluid out of the valve body downstream of the at least one orifice plate aperture; and
rotating the orifice plate to adjust opening and closing of the orifice plate to control a rate of flow of the fluid, rotation of the orifice plate in a first direction effecting an equal increment opening of the orifice plate aperture and rotation of the orifice plate in a second direction that is opposite the first direction effecting an equal increment closing the orifice plate aperture;
wherein
the valve body defines an internal cavity; and
the orifice plate controls a flow of fluid through the choke valve, the orifice plate being disposed within the internal cavity of the valve body;
wherein:
the orifice plate includes:
a center point and being rotatable about a center axis extending longitudinally through the center point; and
a first aperture extending through a face of the orifice plate, the first aperture defining a first equi-incremental phase region, the first aperture being spaced away from the center point of the orifice plate;

and wherein the first aperture further includes a semi-circular section extending from the first equi-incremental phase region and defining a second equi-incremental phase region.