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US 2014/0102575 A1Published application
Energized packing retainer
AssigneeArray Holdings, Inc.
InventorDuane M. Eagen
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a dual packing retainer and dual sealing ball valve for use generally in high pressure applications. Further disclosed herein are methods of detecting seal failure before the ball valve must be taken offline due to the presence of secondary or backup seals.
Claims20
A ball valve comprising:
- a. a ball valve body having a first valve bore and a second valve bore;
- b. a ball situated within the ball valve body, said ball comprising a throughbore defining a flow axis;
- c. a first trunnion bonnet with a proximal end oriented toward the ball and a distal end oriented away from the ball, the trunnion bonnet further defining a trunnion axis perpendicular to the flow axis;
- d. an outer packing retainer having a proximal end and a distal end, the outer packing retainer adapted to be received by the first trunnion bonnet;
- e. an inner packing retainer having a proximal end and a distal end, the inner packing retainer adapted to be received by the outer packing retainer;
- e. a first sealing system between the proximal end of the trunnion bonnet and positioned proximally to the first packing retainer;
- f. a second sealing system between the proximal end of the outer packing retainer and the proximal end of the inner packing retainer;
- h. a trunnion with a proximal end abutting the ball and extending distally from the ball through each of the trunnion bonnet, the first sealing system, the outer packing retainer, the second sealing system and the inner packing retainer, the trunnion further having a distal end connected to a turnwheel;
- and
- wherein the first sealing system prevents fluid from escaping from the ball valve, and wherein if the first sealing system fails, the second sealing system prevents fluid from escaping from the ball valve.
7 more elements
Dependencies are inferred from the claim text.