Pump House for Vertical Driven Pumps
Vertical driven pumps for lift irrigation schemes include vertical turbine pumps, submersible pumps, mixed flow pumps and propeller pumps. Proper arrangement of pumps, sluice and reflux valves, delivery manifold, flow training devices in the jack well for ensuring hydrostatic efficiency and gantry arrangement should be designed properly to ensure smooth functioning of the pumping system. Gantry arrangement with chain pulley block is provided at a height of 4m above the floor of the pump house. The capacity of the gantry should be adequate to lift the maximum weight of a single unit which usually varies from 0.5 to 3 tons, depending upon the size and horse power of the pump set. Cost considerations are equally important as the performance requirements. Specific arrangement of the various ancillary components depends on the type of pumps and their capacities.
In case of horizontal centrifugal pumps the sump well and the pump house are generally located separately in order to be economical. However, in the case of vertically operated pumps, the pump house is superimposed on the jack well. The specific requirements in case of vertical turbine pumps, submersible pumps and other vertically operated pumps are as follows:
- (i) Provision of suitable hydraulic inflow training devices to ensure hydraulic efficiency.
- (ii) Layout of the pumps in the pump house,
- (iii) Location of reflux and sluice valves,
- (iv) Arrangement of delivery manifold.
- (v) Specifications of the pump house and the supporting girders for the pumps,
- (vi) Gantry arrangement.