Modes of operation of network pumps with shielded asynchronous motors in small irrigation systems with artificial pressure

Abstract

The paper proposes a scheme and describes the operating modes of pumping equipment for a finely dispersed irrigation system with artificial pressure for the operating ranges of the performance of sprinklers in terms of flow. For the accepted ratio, which determines the kinetic energy of a drop per unit area, the law of drop motion in air under the action of gravity is obtained. The above network diagram in the process of regulation provides water supply for irrigation, taking into account the measured values of the sprinkler performance over time. Regulation using a centrifugal pump with a shielded asynchronous motor of the current values of water flow in the distribution pipeline connected to the sprinkler provides the technical possibility of implementing the mode corresponding to the inverted (turbine) mode of operation of the pump. The transfer of the engine to the generator mode of operation, allows you to get an autonomous three-phase source of electrical energy for the system’s own needs.