FLOW CONTROL DEVICE WITH VARIANT ORIFICE

摘要

A flow control device includes a seal element and a flow element that in a first position presents a first flow area and in a second position presents a second flow area. Also presented is a flow element with a variant orifice for a flow control device. The flow element may have a hollow body and at least one flow opening in a wall of the hollow body. In another embodiment, the at least one flow opening may have a first flow area at a first position relative to a reference axis and a second flow area at a second position relative to the reference axis. An embodiment of a seal element is presented in which the seal element includes a first portion, a second portion, and a transition portion that joins the first portion and the second portion. The transition portion isolates the second portion from stresses applied to the first portion.

主权项

1. Flow control device, comprising:
a body comprising a flow path having a first portion and a second portion, a flow element comprising at least one flow opening, a seal element disposed between said first portion and said second portion, said flow element being operable with said seal element to control flow between said first portion and said second portion, said at least one flow opening presenting a first flow area when said flow element is in a first position, and said at least one flow opening presenting a second flow area when said flow element is in a second position.