JUSTIFICATION OF IMPROVEMENT OF THE FLOW REGULATOR OF SPRINKLERS OF MULTI-SUPPORT SPRINKLERS
The issues of reliability of the movement of multi-bearing sprinkling machines "Kuban-LK1" operating in a circle when irrigating slope areas are considered, the complexity of the uniform distribution of the sediment layer caused by the increased water flow (Q=2.1-2.3 l/s) formed by the difference in geodetic heights is noted. This leads to a decrease in the strength properties of the soil and its support-coupling properties under the DM running systems and, as a result, leads to a violation of the irrigation process, which was the purpose of this study. To eliminate this drawback, the possibility of using and further using an improved flow regulator (membrane type) of the Valtec VT.085 brand is justified, for stable maintenance of the flow rates of sprinklers, trolleys and cantilever parts, within 1.8-2.0 l/s, which corresponds to the technological process of watering this type of machines. The results of the study showed that the calculated control accuracy, namely the deviation from the steady-state pressure value at the outlet of the improved modification of the Valtec VT.085 flow regulator, is in the range of ± 5%, which meets the requirements of the irrigation process. It is noted that the experimental studies carried out to determine the throughput of the calculated water flow rate depending on the pressure indicated by the control devices, with outlet openings of different diameters, allowed us to establish that the most satisfying requirements for regulating the flow of sprinklers of the latest trolleys and the console part of the DM "Kuban-LK1" is an improved membrane-type control device. At the same time, the pressure regulator under study provides indicators for flow (Q = 1.6 - 1.7 l/s) and outlet pressure (P = 0.30 - 0.50 MPa) l / s, while maintaining the overall characteristics of its serial modification.