Patent ID: 11913557
Assignee: TOTAL SE
Field: Civil engineering (Other fields)
Classification: CPC E  F  G | IPC E  F  G

Claim 15:
16. A protection device for a fluid flow line, comprising:
a valve, mobile in the flow line between an open position in which fluid is able to flow in the flow line and a closed position in which fluid is unable to flow in the flow line;
a valve actuator, configured to move the valve to the closed position when a pressure upstream of the valve exceeds a predetermined threshold pressure;
the valve actuator comprising:
a biaser, configured to maintain the valve in the open position;
an actuation mechanism, configured to act against the biaser to move the valve to the closed position, the actuation mechanism delimiting at least a fluid actuated surface able to receive fluid from the flow line, the actuation mechanism comprising a piston having a piston head and a stem connecting the piston head to the valve, the actuation mechanism further comprising an additional piston located upstream of the piston head and apart from the piston head, the additional piston delimiting the fluid actuated surface, and delimiting, on another side facing the piston head, an intermediate volume containing a transmission fluid;
a fluid sampling passage fluidly connecting the flow line to the fluid actuated surface; and
at least one rupture element preventing the passage of fluid from the flow line in the fluid sampling passage downstream of the rupture element when the pressure upstream of the rupture element is lower than the predetermined threshold pressure, the rupture element being configured to break at the predetermined threshold pressure to let fluid from the flow line contact the fluid actuated surface.