Tapered throttling valve

摘要

The invention relates to a throttling valve comprising a fluid inlet (29) and a fluid outlet (27). The throttling valve is arranged to control a flux of a fluid stream flowing via a flow path from the fluid inlet (29) to the fluid outlet (27). The flow path comprises a plurality of openings (330) which, in use, create a pressure reduction over the throttling valve and thereby a cooling effect of the fluid. The openings (330) widen in a downstream direction.

主权项

1. A throttling valve comprising:
a valve housing (21) including a fluid inlet (29) and a fluid outlet (27); a perforated sleeve (323) axially arranged within the valve housing about a central axis (11) extending from the fluid inlet (29) to the fluid outlet (27) such that a flow path from the fluid inlet to the fluid outlet passes from an outside of the perforated sleeve to an inside of the perforated sleeve, the perforated sleeve (323) having a plurality of openings (330); wherein a flux of a fluid stream flowing via the flow path from the fluid inlet (29) to the fluid outlet (27) is controllable via the plurality of openings (330) of the perforated sleeve which, in use, create a pressure reduction over the throttling valve and thereby a cooling effect of the fluid stream, wherein each of the openings (330) widens from the outside of the perforated sleeve (323) to the inside of the perforated sleeve (323) in a downstream direction of the flow path along longitudinal axes (12) of the openings (330); and wherein the longitudinal axes (12) of the openings (330′″) have a substantial axial component relative to the central axis.