Single hydraulic line choke valve system

Details Single hydraulic line choke valve system Single hydraulic line choke valve system

1984-12-06

1986-09-16

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

251 59, 251 58, 74126, 74 50, 137219, F16K 324, F16K 31163, F16K 31528

Patent

active

046116303

ABSTRACT:
A choke valve with a power system operated via a single hydraulic line. The sleeve of the choke valve is operated by a carrier mounted through an eccentric pin and guide track arrangement to open and close the valve with the rotation of a valve drive shaft. A power shaft is driven by a clutch plate, ratchet connected to a drive clutch plate, in turn, operated by the shaft of an hydraulic actuator. The valve actuator creates an incremental step sensing of its full sixteenth turn movement by closing a fluid exhaust port and causing back pressure in the hydraulic line to occur. The actuator is reset by a pre-loaded torsion bar. Reset of the actuator also ratchet resets the drive clutch plate.

REFERENCES:
patent: 853707 (1907-05-01), Margadant
patent: 1610031 (1926-12-01), Backhouse
patent: 1886518 (1932-11-01), Beckwith
patent: 3060957 (1962-10-01), Richards
patent: 3330289 (1967-07-01), Grace
patent: 3430654 (1969-03-01), Mills
patent: 4132386 (1979-01-01), Lee
patent: 4379543 (1983-04-01), Reaves
patent: 4471810 (1984-09-01), Muchow et al.
Bird-Johnson, Model Hyd-ro-ac Hydraulic Rotary Actuator Catalog, p. 2, Apr. 1984.

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