INFLUENCE OF LOADING UNIT PARAMETERS ON LEAKS LIQUIDS

Sultanaliev B.S., Melis uulu Danislan, Melis kyzy Nazira

Abstract

When designing and improving hydraulic tools and machines, it is
necessary to know the physical and mechanical properties of the used working
fluids. In existing reference books, textbooks and monographs, changes in
these properties are given at pressures up to 50 MPa, which was quite enough
for the level of technology at the beginning of the 2000s. Currently, in mining
and construction machinery and equipment, in hand tools for liquidating the
consequences of emergency situations, machines with a hydraulic drive are
used, the pressure of the working fluid in which reaches 100 MPa. In this
regard, the paper substantiates the need for experimental studies of the effect
of fluid pressure on its bulk modulus of elasticity at fluid pressures above 50
MPa. The diagram of the loading device for research is presented. A method
for calculating fluid leakage at different sizes of the clearance between the
piston and the cylinder of the loading device and its effect on the pressure of
the working fluid is presented. Diagrams of the dependence of fluid leaks on
pressure at various gaps and at various geometric parameters of the loading
device are presented.