TURBINES HAVING TWO COMPLEMENTARY PROPELLERS MAY BE INSERTED ON A PRESSURIZED CANALIZATION TRANSPORTING A NON-HOMOGENEOUS FLUID OR A VERY VARIABLE FLOW

摘要

The turbine has two distinct axial-flow impellers (8, 9) integrated with same axis inside a pipe. The impeller (8) is for liquid phase with high flow rate and the other impeller (9) is for gaseous phase, mixture of gaseous phase/liquid phase or for liquid phase with low flow rate. A sleeve (20) reduces loss of load generated at level of the impeller (9) according to axial pressure of the fluid inside the turbine.