US 12,215,722 B2
Emergency isolation valve control design
Yousef H. Mubarak, Alhassa (SA); Manoj Chetia, Udhailiyah (SA); and Elmer S. Castillo, Udhailiyah (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Mar. 28, 2023, as Appl. No. 18/191,106.
Prior Publication US 2024/0328536 A1, Oct. 3, 2024
Int. Cl. F15B 19/00 (2006.01); F16K 31/04 (2006.01); F16K 31/122 (2006.01); F16K 31/124 (2006.01); F16K 31/126 (2006.01); F16K 31/143 (2006.01); F16K 31/163 (2006.01); F16K 31/42 (2006.01); F16K 31/56 (2006.01); F16K 37/00 (2006.01)
CPC F15B 19/005 (2013.01) [F16K 31/041 (2013.01); F16K 31/122 (2013.01); F16K 31/1221 (2013.01); F16K 31/1225 (2013.01); F16K 31/124 (2013.01); F16K 31/1262 (2013.01); F16K 31/143 (2013.01); F16K 31/163 (2013.01); F16K 31/423 (2013.01); F16K 31/56 (2013.01); F16K 37/0083 (2013.01); F16K 37/0091 (2013.01); F15B 2211/855 (2013.01); F15B 2211/8752 (2013.01); F15B 2211/8755 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A control system for an isolation valve, the control system comprising:
a pneumatic actuator having a spring that is compressible by a gas and connected to the isolation valve, wherein the gas is supplied to the pneumatic actuator along a gas flow path;
a solenoid valve operable between an open position and a closed position, wherein the open position permits the gas to flow along the gas flow path to the pneumatic actuator;
a partial stroke test device configured to perform partial stroking of the isolation valve upon reception of a signal from a computer by sending the gas to the pneumatic actuator through a needle valve; and
a universal operation hand operated valve configured to send the gas to the solenoid valve or to the partial stroke test device.