摘要:
The invention provides a drain (122) comprising a vortex throttle (126), to remove water from a pressure sensing line (10). The vortex throttle resists the flow of air through it. Therefore, for a given diameter of inlet and outlet ports the mass flow rate through the vortex throttle is much smaller than through a plain hole of the same diameter. The inlet and outlet ports may therefore be made larger than in known arrangements (so reducing the risk of blockage), but the operation of the vortex throttle restricts the mass flow of air through the drain pipe (so minimising the detrimental effects on the engine's operation). The invention thus provides effective drainage of collected water from the pressure sensing line, without the disadvantages of known arrangements.
摘要:
A system and method include delivering cells of interest to multiple traps via a channel connecting the traps, maintaining a vortex flow in the traps to trap the cells of interest in the traps, providing first molecules of interest to the traps, and providing an electric field across the traps to perform electroporation of the first molecules of interest into the cells of interest in the traps.
摘要:
The present invention relates to a method and a device comprising a self-regulating pressure pipe for increasing a rate of a fluid flow of a fluid and configured to respond to the volume of the fluid or the viscosity of the fluid by decreasing or increasing the pressure within the self-regulating pressure pipe.
摘要:
A choke assembly comprises an inlet for a multiphase fluid stream, the stream comprising a first relatively heavy fluid phase and a second relatively light fluid phase; a first fluid outlet; a choke element disposed between the inlet and the first fluid outlet operable to control the flow of fluid between the inlet and the first fluid outlet; a separation chamber disposed to provide separation of phases in the fluid stream upstream of the choke element; and a second outlet for removing fluid from the separation cavity. The choke assembly is of particular use in the control of fluid streams produced from a subterranean well, in particular oil and gas produced from a subsea well.
摘要:
A choke assembly comprises an inlet for a multiphase fluid stream, the stream comprising a first relatively heavy fluid phase and a second relatively light fluid phase; a first fluid outlet; a choke element disposed between the inlet and the first fluid outlet operable to control the flow of fluid between the inlet and the first fluid outlet; a separation chamber disposed to provide separation of phases in the fluid stream upstream of the choke element; and a second outlet for removing fluid from the separation cavity. The choke assembly is of particular use in the control of fluid streams produced from a subterranean well, in particular oil and gas produced from a subsea well.
摘要:
A choke assembly comprises an inlet for a multiphase fluid stream, the stream comprising a first relatively heavy fluid phase and a second relatively light fluid phase; a first fluid outlet; a choke element disposed between the inlet and the first fluid outlet operable to control the flow of fluid between the inlet and the first fluid outlet; a separation chamber disposed to provide separation of phases in the fluid stream upstream of the choke element; and a second outlet for removing fluid from the separation cavity. The choke assembly is of particular use in the control of fluid streams produced from a subterranean well, in particular oil and gas produced from a subsea well.
摘要:
A choke assembly comprises an inlet for a multiphase fluid stream, the stream comprising a first relatively heavy fluid phase and a second relatively light fluid phase; a first fluid outlet; a choke element disposed between the inlet and the first fluid outlet operable to control the flow of fluid between the inlet and the first fluid outlet; a separation chamber disposed to provide separation of phases in the fluid stream upstream of the choke element; and a second outlet for removing fluid from the separation cavity. The choke assembly is of particular use in the control of fluid streams produced from a subterranean well, in particular oil and gas produced from a subsea well.
摘要:
A bypass valve (21) for a vortex flow control valve, the bypass valve being movable between an open position and a closed position and comprising an opening actuator (23) for moving the valve (21) from the closed position to the open position, and a closing actuator comprising a float (24) for moving the valve (21) from the open position to the closed position.
摘要:
Provision of flow control arrangements which can be switched from high flow restriction to low flow restriction or vice versa are desirable. It is known to use switched vortex valves comprising a vortex chamber having a diverter portion which jets a through flow into either radial presentation to an outlet or tangential presentation with differential flow restrictions. Typically deflection is through cross flows presented from control ports as determined by mechanically actuated and controlled valves. Sensors are required to determine pressure differentials in order to actuate these moving part valves. By providing association between the control ports and an outlet path along with appropriate configuration and sizing of the flow regulators switching states can be provided through the cross flows presented via the flow regulators between the high and low through flow restriction. The flow regulators generally comprise orifice restrictors, diffusers/venturi arrangements or vortex throttles.