Apparatus for separating the liquid and vapor phases of a fluid

A steam generator of the type comprising an outer casing, a first circuit in which circulates a hot primary fluid and a second circuit in which circulates a secondary fluid, the secondary fluid entering the casing in the liquid state and leaving it in the vapor state after storing part of the calories transported by the primary fluid, the second circuit also incorporating means for separating the liquid and vapor phases of the secondary fluid positioned in the vicinity of an outlet from the casing, wherein the separation means comprise at least one group of two separation apparatuses connected in series, each of said apparatuses incorporating an open ended cylinder having an axis and blades within the cylinder, each blade being in the form of a curvilinear triangular surface having a first side contiguous with the cylinder and defining a helix having an axis which coincides with the axis of the cylinder, an apex opposite to said first side, arranged substantially at the axis of the cylinder and joined and sealed at the corresponding apices of the other blades, two other sides of the triangular surface defining a leading edge substantially perpendicular to the axis of the cylinder and a trailing edge inclined with respect to said axis, and two other apices opposite respectively to said leading edge and to said trailing edge, said trailing edge being curved and defining with a straight line joining the apices opposite to said first side and to said leading edge a surface curved inwards in a direction of the helix defined by the first side.

A steam generator of the type comprising an outer casing, a first circuit in which circulates a hot primary fluid and a second circuit in which circulates a secondary fluid, the secondary fluid entering the casing in the liquid state and leaving it in the vapor state after storing part of the calories transported by the primary fluid, the second circuit also incorporating means for separating the liquid and vapor phases of the secondary fluid positioned in the vicinity of an outlet from the casing, wherein the separation means comprise at least one group of two separation apparatuses connected in series, each said separation apparatus comprising an open ended cylinder having an axis and blades in said cylinder, each blade having a curvilinear triangular surface having a first side contiguous with the cylinder and defining a helix whose axis coincides with the axis of the cylinder, an apex opposite to said first side, arranged substantially at the axis of the cylinder and joined and sealed at the corresponding apices of the other blades, two other sides of the triangular surface defining a leading edge substantially perpendicular to the axis of the cylinder and a trailing edge inclined with respect to said axis, and two other apices opposite respectively to said leading edge and to said trailing edge, each blade of the first of said separation apparatuses in the series having on the leading edge a frustum-shaped extension curved inwards in a direction of the helix defined by the first side, the radius of curvature of said extension increasing towards the cylinder.