Patent ID: 7942071

Claim:
Turbine for measuring petroleum products which are charged with a viscosity reduction agent, comprising: a tubular body which receives, in the axial extension thereof in the passage direction of the fluid, an upstream stator, a rotor and a downstream stator, the stators being formed by cross-members whose blades are planar and parallel with the axis of the turbine, and the rotor is a propeller having a plurality of blades, a means for detecting the rotation of the rotor in order to provide information relating to the output, characterized in that the trailing edge of the blades of the upstream stator is inclined through a negative angle relative to a normal relative to the axis, the leading edge of the blades of the propeller is inclined and rounded in an incline which is directed downstream, the rotational mounting of the propeller in the turbine involves: a fixed shaft which is installed in the upstream and downstream stators, and which carries an upstream bearing bush and a downstream bearing bush, close to the end of the location of the propeller, a peripheral upstream stop and downstream stop relative to the upstream bearing bush and the downstream bearing bush, the fixed shaft extending through each of the stops which is formed by a crown of support pins, the propeller comprises a tubular hub through which the fixed shaft extends and which has a bearing bush at each end in order to each co-operate at the same time with the corresponding bearing bush of the fixed shaft and with the corresponding peripheral stop.