Measuring unit for determining the composition of the liquid phase in a multi-phase mixture

摘要

Measuring device (1; 15) for determining the composition of the liquid phase of a liquid-gas mixture includes a duct (2) defining a flow direction (X) of the mixture parallel to the longitudinal development axis (Y) of the duct (2) and a measuring element (4) arranged in the duct (2) and suited to determine the composition of a liquid layer that flows in contact with the internal surface (3) of the duct (2). The internal surface (3) of the duct (2) includes an intercepting surface (5, 5′) suited to convey part of the liquid layer towards the measuring element (4), arranged so that it is incident on the flow direction (X) and developed according to a conveyance trajectory that has a helical section and whose tangent to the outlet end (7, 7′) intersects the measuring element (4).

主权项

1. A measuring device for determining the composition of the liquid phase of a liquid-gas mixture, comprising:
a duct into which said mixture can flow according to a predefined flow direction parallel to a longitudinal development axis of said duct, said duct having an internal surface; a measuring element arranged inside said duct, positioned in such a way as to be able to determine the composition of a layer of liquid that flows in contact with the internal surface of said duct; said internal surface of said duct comprising a helical intercepting surface arranged so that it is incident on said flow direction and developed according to a predefined helical conveyance trajectory between an inlet end, arranged upstream of said measuring element according to said flow direction, and an outlet end, arranged downstream of said inlet end and facing said measuring element, said helical intercepting surface being suited to deviate a part of said liquid layer in such a way as to convey it along said predefined helical conveyance trajectory and towards said measuring element while leaving a flow of a remaining portion of said mixture unaffected.