Dual chamber orifice fitting plate support
AssigneeDaniel Industries, Inc.
InventorsThomas Loga, Gary Tatum, Ronald Doom, Mark O'Daniel
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for positioning an orifice plate within a body having a straight flowbore. One embodiment includes a carrier supporting the orifice plate and a drive member operable to engage the carrier and move the carrier along a first axis perpendicular to the flowbore. The drive member is also operable to limit the movement of the carrier along a second axis perpendicular to the flowbore and perpendicular to the first axis. A pin is operable to engage the carrier so as to limit movement along the first axis.
Claims22
An apparatus for positioning an orifice plate within a body having a straight flowbore, the apparatus comprising:
- a carrier supporting the orifice plate;
- a drive member operable to engage said carrier and move said carrier along a first axis perpendicular to the flowbore, wherein said drive member is also operable to limit the movement of said carrier along a second axis perpendicular to the flowbore and perpendicular to said first axis;
- and
- a pin operable to engage said carrier so as to limit movement along the first axis.
A dual chamber orifice fitting comprising:
- a body having a lower chamber in communication with a flowbore and an upper chamber in communication with the lower chamber;
- an orifice supported by an orifice carrier that is selectably moveable between the upper chamber and the lower chamber;
- a lower drive system disposed in the lower chamber and adapted to move the orifice carrier between the upper chamber and the lower chamber;
- and
- a stop pin assembly connected to said body and projecting into the lower chamber;
- wherein said orifice is vertically positioned relative to the flowbore by said stop pin and horizontally positioned relative to the flowbore by said lower drive system.
A dual chamber orifice fitting comprising:
- a body;
- a spanner nut threadedly engaged with said body;
- a stop pin moveably engaged with said body, wherein movement of said stop pin is limited by said spanner nut;
- a jack screw threadedly engaged with said spanner nut and operable to move said stop pin.
A dual chamber orifice fitting comprising:
- a body;
- a stuffing box sealingly engaged with said body;
- a shaft partially disposed within said body and sealingly engaged with said stuffing box;
- a gear rotatably affixed to said shaft, wherein the axial position of said gear along said shaft is determined by said stuffing box.
A method of aligning an orifice plate carrier within a flowbore, the method comprising:
- operating a drive member to engage the orifice plate carrier and move the orifice plate carrier along a first axis perpendicular to the flowbore;
- and
- using the drive member to control the location of the orifice plate carrier along a second axis that is perpendicular to both the flowbore and the first axis.
Dependencies are inferred from the claim text.