Hydraulic torque converter
Hydraulic torque converters resemble fluid couplings and consist of an impeller (on the input shaft), runner (on the output shaft) and a vaned diffuser which absorbs torque (TLe) and is supported by the casing. There is a balancing of moments between the input torque (TP) (impeller torque), the output torque (TT) (runner torque) and the torque at the vaned diffuser (TLe).
Given that the hydraulic torque converter is responsible for converting the impeller torque into runner torque, it is also referred to as a torque converter. Within the context of drivingcentrifugal pumps, these components only play a secondary role, except in the case of pumped storage power plants.
