ENERGY SAVING WITH MULTI-SUPPORT IRRIGATION SPRINKLING MACHINES

The relevance of the research is caused by the need to reduce energy losses during irrigation and improve the quality of irrigation of the «Fregat» sprinkling machines. The article describes a low-pressure sprinkling machine «Fregat» with an additional polyethylene pipeline and a filter that provides fine cleaning of water from debris and feed to the hydraulic drives of the sprinkling machine’s carts. The formulas are given and the sequence for calculating the di-ameter of the additional polyethylene pipeline and the pressure at the inlet to the machine, de-pending on its modification, is shown. When using an additional polyethylene pipeline with a diameter of 63 mm and the cyclicity of the hydraulic cylinder of the last cart equal to 4 strokes/min, the pressure at the inlet of machines of various modifications decreases from 0.53-0.7 MPa to 0.37-0.45 MPa or 1.3-1.5 times. For such machines, in order to increase the movement speed by 2-4 times, the hydraulic cylinders are fed with water from an additional polyethylene pipeline only in the second half of the length of the machine pipeline. Researches have confirmed the high efficiency of modificating the «Fregat» sprinkling machine to a low-pressure operating mode, which leads to optimization of the pumping station operation, also increases the number of simultaneously operating machines, decreases the time of irrigation of an irrigated area and a decreases an electricity consumption for irrigation.