Fluid flow meter and mixer having a displacement element removably and replaceably

摘要

Apparatus fluid flow (10) comprising a conduit including a section removable and replaceable conduit (20) having a peripheral wall with an interior surface for conveying fluid therethrough in a given direction, said section conduit relative to the direction of fluid flow an upstream end and a downstream end, said apparatus comprising: a displacement fluid flow (42) in the conduit section (20) having with respect to the direction of fluid flow an upstream end and a downstream end, said displacement element (42) smaller than the conduit section (20) and having between its ends means inclined wall (48, 50) forming a periphery on said member for deflecting the fluid to flow through a region defined between the periphery of said displacement member (42) and the inner surface of the conduit section (20 ), A tube (54, 56) extending through the wall of said conduit section, said displacement member (42) a step substantially axially therethrough which engages said guide pin (56) so that fluid communication between the exterior of the conduit section (20) and a location at or adjacent the axis of said conduit section at or adjacent the downstream end of said displacement (42), as a cooperating means for mounting removably and replaceably said displacement (42) in the conduit section (20) by which said displacement element (42) can be removed and replaced by a displacement element (42) different to suit to a different range of flows through the conduit section (20); said apparatus characterized by having a guide pin (56) fixed to said tube (54) and extending axially from the conduit section (20) in the downstream direction, said cooperating means located being between said pin being guide (56) and said displacement (42).