VALVE
1 Assignment
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Accused Products
Abstract
Valve for throttling the flow rate of a fluid, distinguished in that it comprises a bolt (12), a pipe section (8) having inner dimension adapted to enclose the bolt sealingly, a groove (13) in at least one of the outer surface of the bolt and the inner surface of the pipe section, the groove providing a fluid passageway between the enclosed bolt and pipe section, an inlet port having fluid connection to an upstream end of the groove, an outlet port having fluid connection to a downstream end of the groove, and means to adjust a coaxial position of the bolt (12) relative to the pipe (8), by moving one or both of the bolt and pipe section, in order to adjust the throttling effect of the valve. System comprising valves of the invention.
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Citations
27 Claims
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1-10. -10. (canceled)
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11. Valve for subsea hydrate inhibitor injection into the flow of a subsea wellhead, at the wellhead, wherein the hydrate inhibitor may comprise eroding particles, the valve comprising:
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a bolt and a pipe section having an inner dimension adapted to enclose the bolt, an inlet port and an outlet port, a confined helix shaped throttling flow bore provided by a groove in at least one of the outer surface of the bolt and the inner surface of the pipe section, and means to adjust the throttling effect of the valve, wherein the length of the confined part of the groove is variable by moving the axial position of the bolt relative to the pipe, and adapted so that all of the injection inhibitor flow follow and flush the full length of the confined throttling bore. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification