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A centrifugal pump containing two or more impellers is called a multistage centrifugal pump. The impellers may be mounted on the same shaft or on different shafts. At each stage, the fluid is directed to the center before making its way to the discharge on the outer diameter. For higher pressures at the outlet, impellers can be connected in series.
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Upon Drummond's death in 1912, his successor, Robert Urie, supplied the class with superheaters, and from 1922, the entire class was so treated. [3] Their sterling performance as a class precluded any further modifications, apart from the removal of the cross-water tubes, an enlarged smokebox , addition of a stovepipe chimney, and an increase ...
The Caledonian Railway 264 and 611 classes were 0-4-0 ST locomotives designed by Dugald Drummond and built by Neilson and Company in 1885. [ 1 ] [ 2 ] Later examples were built at St Rollox Works under the direction of John F. McIntosh in 1895, 1900, 1902 and 1908.
Several different types of pump impellers Flexible impeller of cooling system pump of an outboard engine (1 euro cent coin for comparison, diameter 16.25 mm). An impeller is a rotating component of a centrifugal pump that accelerates fluid outward from the center of rotation, thus transferring energy from the motor that drives the pump to the fluid being pumped.
A flexible impeller pump is a positive-displacement pump that, by deforming impeller vanes, draws the liquid into the pump housing and moves it to the discharge port with a constant flow rate. The flexibility of the vanes enables a tight seal to the internal housing, making the pump self-priming , while also permitting bi-directional operation.
Pump and volute casing. A volute is a curved funnel that increases in area as it approaches the discharge port. [1] The volute of a centrifugal pump is the casing that receives the fluid being pumped by the impeller, maintaining the velocity of the fluid through to the diffuser. As liquid exits the impeller it has high kinetic energy and the ...
Cutaway side-view diagram of an axial piston pump 3-D rendering of an axial piston pump with the parts labeled Animation of an axial piston pump in operation. An axial piston pump has a number of pistons (usually an odd number) arranged in a circular array within a housing which is commonly referred to as a cylinder block, rotor or barrel.
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