Method and apparatus for process control of vertical movement of

Details Method and apparatus for process control of vertical movement of Method and apparatus for process control of vertical movement of

1982-02-22

1984-11-27

Look, Edward K.

Pumps

Condition responsive control of pump drive motor

With control of pump drive transmission

417 63, 417244, F04B 4900

Patent

active

044848617

ABSTRACT:
A process control system for use in movement of slurry material from a first lower level through a vertical flow way to an upper or surface level. In particular, this system is utilized for moving slurried particulate from a subterranean mine level upward through a vertical flow way such as an earth borehole to a surface pumping station or the like. The vertical pump system includes series-connected pumps having variable speed capabilities at the lower level, and the pumps then direct the slurried material through the vertical flow way to an upper level receiving station. The process control monitors the upper level volume, the slurry line pressure in the pipeline underground, and the flow rate in the pipeline underground thereby to select a controller output signal. The output signal is then utilized to control a hydraulic servo mechanism which adjusts the variable speed drive to one or more of the series-pumps thereby to maintain a proper flow rate and pressure through the vertical flow way.

REFERENCES:
patent: 1406377 (1922-02-01), Harvey
patent: 2768501 (1956-10-01), Muller
patent: 3155040 (1964-11-01), Shurts et al.
patent: 3982789 (1976-09-01), Funk
patent: 4170438 (1979-10-01), Kondo et al.
patent: 4204808 (1980-05-01), Reese et al.

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