Pumping installations or systems

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04DNON-POSITIVE DISPLACEMENT PUMPS

F04D13/00Pumping installations or systems

F04D13/02Units comprising pumps and their driving means F04D13/021containing a coupling F04D13/022a coupling allowing slip F04D13/023for reducing start torque F04D13/024a magnetic coupling F04D13/025Details of the can separating the pump and drive area F04D13/026Details of the bearings F04D13/027Details of the magnetic circuit F04D13/028the driving means being a planetary gear F04D13/04the pump being fluid driven F04D13/043the pump wheel carrying the fluid driving means F04D13/046the fluid driving means being a hydraulic motor of the positive displacement type F04D13/06the pump being electrically driven F04D13/0606Canned motor pumps F04D13/0613Special connection between the rotor compartments F04D13/062pressure compensation between motor- and pump- compartment F04D13/0626Details of the can F04D13/0633Details of the bearings F04D13/064Details of the magnetic circuit F04D13/0646the hollow pump or motor shaft being the conduit for the working fluid F04D13/0653the motor being flooded F04D13/066Floating-units F04D13/0666the motor being of the plane gap type F04D13/0673the motor being of the inside-out type F04D13/068Battery powered F04D13/0686Mechanical details of the pump control unit F04D13/0693Details or arrangements of the wiring F04D13/08for submerged use F04D13/083and protected by a gas-bell F04D13/086the pump and drive motor are both submerged F04D13/10adapted for use in mining bore holes F04D13/12Combinations of two or more pumps F04D13/14the pumps being all of centrifugal type F04D13/16with storage reservoirs