![]() ![]() The jet pump creates the pressure of at least 8 bars which are sufficient to loosen compressed soils with clayish inclusions. The dredger is equipped with a water jet system comprising a centrifugal pump and a jet ring with nipples mounted directly on a dredge pump. The dredger can work in semi-automatic mode employing an industrial programmable logic controller which ensures the operation within the range of admissible pump current consumption and in permanent contact with the soil. The device detecting the availability of water in pontoons will inform the staff about its penetration. The system of the dredger electric equipment and automation ensures all electro-technic protection measures, as well as control of current consumption, input voltage, and submersible pump insulation resistance.The dredger is protected against possible heeling and water availability in bilges. The provisional lifetime of flow part details is no less than 2000 hours. The dredger electric power supply - 3-phase from the shore 400 V grids. The speed of the pump shaft rotation is 590 rpm ensuring the pump flow parts’ wear resistance. Hence, the pump can work at significant overloads. ![]() The pump is equipped with a low-speed electric motor with high starting torque. In such a way, the pumping of pulp with the 60%-concentration of solid inclusions is ensured. The latter ensures an uninterrupted load of the concentrated mixture to the suction pipe. ![]() The suggested design foresees the installation of an electric submersible pump with a built-in motor, as well as a mechanic agitator. The dredger should not be equipped with soil withdrawal frame and the system of soil suction (in particular, suction pipeline and ripping device). It was specially designed for operation with highly viscous mixtures having the high content of solid particles. The dredger has been designed with the implementation of a completely new concept of soil intake due to the application of a submersible pump. The dredger with an electric submersible dredge pump with the capacity by pulp reaching 720 m3/h, while the output by soil is not less than 200 m3/h, at the head of up to 22 m.w.c. The pump head ensures the handling of sand and gravel mixtures at the distance up to 350 meters horizontally. ADST-600E With electric Heracles submersible pump type 250/580, flow rate up to 720 m3/h and head up to 40 m ![]()
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