DETERMINATION OF THE CAPACITY OF A COMBINED COMPENSATOR BY THE OPERATION OF THE SOLUTION ACCUMULATION OF A SINGLE-PISTON HYDRAULIC MORTAR PUMP

Abstract

Analysis of modern pumps indicates the search for ways to simplify their designs and improve the basic scheme of single-piston mortar pumps while minimizing pulsations in the pipeline during the transportation of building mortars.
Reducing pressure pulsations in modern single-piston mortar pumps is ensured by the use of pressure compensators in the form of air caps of various volumes. But air compensators, while performing their function along with advantages, have significant disadvantages, namely: the volume of compressed air that is in direct contact with the pumped solution is intensively removed from the compensator during the operation of the mortar pump. Especially the intensity of air removal increases at the pressure of the solution supply (above 1.5 MPa). In this case, the useful volume of the compensator decreases, the efficiency of the solution accumulation of the compensator significantly decreases, and the degree of solution pulsations increases proportionally.
The article analyzes the work and mathematically substantiates the determination of the useful volume based on the rules of gas behavior in the isothermal process of a new design of a combined compensator of increased efficiency in reducing the degree of pressure pulsations during pumping of mortars of different mobility by a hydraulically driven single-piston mortar pump.