Patent ID: 6164905
Filing Date: 2000-12-26
Classification: G01F

Abstract:
A flowmeter turbine comprising a tubular body through which a fluid to be measured passes, said tubular body accommodating:an upstream spider member and a downstream spider member each formed by a hub and fixed vanes supporting the hub in the tubular body;opposite faces of the spider member hubs having a cavity on the longitudinal axis of the tubular body to receive an assembly comprising a support bearing and thrust bearing;a screw member formed by a screw member hub carrying vanes and an axis member and placed between the spider members, the ends of the axis member being accommodated in the support bearings of the spider members against the thrust bearings; andeach spider member hub being traversed by at least one fluid duct opening into the cavity in line with the bearing assembly;wherein the ducts are inclined with respect to the axis of the turbine, the intake of the at least one duct of the upstream spider member being disposed upstream of the bearing assembly and the outlet of the at least one duct of the downstream spider member being disposed downstream of the bearing assembly.