Pumping machinery

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Pumping machinery

Devices which convey fluids, chiefly liquids, from a lower to a higher elevation or from a region of lower pressure to one of higher pressure. Pumping machinery may be broadly classified as mechanical or as electromagnetic.

In mechanical pumps ghe fluid is conveyed by direct contact with a moving part of the pumping machinery. The two basic types are (1) velocity machines, centrifugal or turbine pumps, which impart energy to the fluid primarily by increasing its velocity, then converting part of this energy into pressure or head, and (2) displacement machines with plungers, pistons, cams, or other confining forms which act directly on the fluid, forcing it to flow against a higher pressure. See Centrifugal pump, Displacement pump

Where direct contact between the fluid and the pumping machinery is undersirable, as in atomic energy power plants for circulating liquid metals used as reactor coolants or as solvents for reactor fuels, electromagnetic pumps are used. There are no moving parts in these pumps; no shaft seals are required. The liquid metal passing through the pump becomes, in effect, the rotor circuit of an electric motor.

References in periodicals archive ?
5 billion under which pumping machinery at the Bawa Chak water reservoir in 1992 would be replaced.
Construction, Testing, Commissioning, Trial Run and Maintenance of:-Intake Well 6m Dia & 22 m Height Pump House & Suitable Approach Bridge,Raw Water Pumping Machinery Q-52.
Lev Nelik, Phd, PE, APICS, is the President of Pumping Machinery LLC, specializing in pump consulting, training, and equipment troubleshooting.
Tenders are invited for Laying,Jointing and testing of rising main for booster stage 50mm dia,S/E of Centrifugal Pumping Machinery along with allied accessories for Ist Stage & S/E of submersible Pumping machinery with allied accessories complete in Booster Stage in connection with Improvement and Augmentation of LWSS Kaloh Chhanjhar in Tehsil Ghumarwin District Bilaspur(H.
Tenders are invited for Improvement of Distribution system, replacement of Rising main and Pumping Machinery including civil works of T/well No.