Hydro-pneumatic pumpsets

Details Hydro-pneumatic pumpsets Hydro-pneumatic pumpsets

1987-10-15

1989-01-24

Croyle, Carlton R.

Pumps

Condition responsive control of pump drive motor

Plural pumps having separate drive motors, supply sources,...

417 19, 417 36, 417 63, 1372075, 137208, 137567, F04B 4106, F04B 4900

Patent

active

047998644

ABSTRACT:
A packaged hydro-pneumatic pumpset system in which a plurality of pumps JI, M2, M3 are brought into operation sequentially as water pressure in the system drops below pre-set values. The system includes an accumulator 6 for storing water to maintain pressure in the system when the pumps are not operating and a prime is maintained on the pumps by means of a footvalve in the suction pipe inlet. The system also includes a second accumulator 9, which is connected to the first and which is arranged, when the pumps are inoperative, to maintain a reservoir of stored pressurized water in the suction manifold.

REFERENCES:
patent: 2246940 (1941-06-01), Hood
patent: 3229639 (1966-01-01), Hignutt et al.
patent: 3746471 (1973-07-01), Gray et al.
patent: 4281968 (1981-08-01), Akers

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