Experimental and theoretical studies of pumps of irrigation pumping stations

The article presents the results of a study wear individual pump elements, decrease in their efficiency and significant losses. nonidentical operation extreme middle pumps was established. uneven approach water to units created reverse flows suction pipes, work with vibrations modes close cavitation. modernization improved cavitation characteristics due elimination center at impeller inlet area driven disk, which increased reliability durability pump. Diagnostics irrigation made it possible substantiate proposals for main operating modes. distribution according general level vibration is shown, indicating direction maximum value displacement recorded comparative measurement pumping station-1 Karshi Main Channel (KMC).Studies large stations have shown reduction an improvement basic parameters. With participation authors, new complex methods are being developed, allow increasing its by predicting technical condition.