Cyclonic flow separator

A separator of a mixture of a liquid and a gas, comprising an injection device, a separation chamber having a substantially cylindrical internal surface and extending along a vertical longitudinal axis, and a control chamber, in which:

• the injection device is fed by the mixture of liquid and gas, and injects the mixture into the separation chamber substantially tangential to the internal surface, such that the mixture is separated in the separation chamber into gas situated in a central volume and liquid situated in an annular volume around the central volume, an interface surface separating the said central and annular volumes,
• the separation chamber comprises a first axial outlet for extracting the gas from the central volume, a second outlet at a distance from the said axis for extracting the liquid from the annular volume, and a third axial outlet in communication with the control chamber, the third axial outlet having a diameter greater than the diameter of the first axial outlet and smaller than an internal diameter of the second axial outlet,
• the control chamber receives a quantity of liquid which flows from the separation chamber to form a volume of liquid having an upper surface, and is connected to the injection device by a return circuit to reinject a quantity of liquid from the said control chamber to the injection device, and
• a regulation means suitable for regulating a level of the upper surface by reinjecting the quantity of liquid through the return circuit, and such that the interface surface has, in normal operating conditions, a diameter lying between the diameter of the first outlet and the diameter of the third outlet so that the said interface surface enters the control chamber and the liquid from the separation chamber flows to the said control chamber.