Repozytorium publikacji - Politechnika Gdańska

The Author concludes, that there is a possibility of determining a concrete value of the liquid aeration coefficient during the pump operation by finding such value of coefficient with which the increase of torque of mechanical losses is proportional to the indicated torque determined with a fixed value of increase of pressure in the pump working chambers. The fixed value of increase of pressure assumed in searching the liquid aeration coefficient equals to the nominal pump operation pressure pn. The increase of torque of mechanical losses with a fixed value of increase of pressure is proportional to the pump geometrical working capacity , therefore: only with taking into account the aeration coefficient of liquid displaced by the pump, the relation can be obtained from tests. The method, proposed by the Author, of determining the working liquid aeration coefficient, is presented in this paper and has been practically applied for the first time by Jan Koralewski in his investigations of the influence of viscosity and compressibility of aerated hydraulic oil on volumetric and mechanical losses in a pump of HYDROMATIK A7V.58.1.R.P.F.00 type.

Autorzy

• prof. dr hab. inż. Zygmunt Paszota link otwiera się w nowej karcie