TURBINE FLOW TRANSDUCER Russian patent published in 2009 - IPC G01F1/12 

FIELD: motors and pumps.

SUBSTANCE: flow transducer consists of a housing with instrumentation channel where turbine is installed between two cowls of jet-directing and straightening vanes. The turbine can rotate and move in axial direction. The location of pick-up unit is the same as the turbine location. The turbine hub is implemented with one or two front beveled ribs. The turbine blades are attached to the hub and implemented as blades with reduced axial length along their height from their periphery to the hub from the outlet side or inlet and outlet side, accordingly, so that incremental intersection of blades by their height is reduced from periphery to the hub taking into account their thickness. The invention ensures high sensibility at low flow rates thereby measuring range and accuracy is improved.

EFFECT: reduced length of blade length from periphery to hub enables making beveled rib without turbine length extension.

2 dwg