Draining pump system and drainage preference operating method th

Details Draining pump system and drainage preference operating method th Draining pump system and drainage preference operating method th

1991-11-25

1994-02-22

Nilson, Robert G.

Fluid handling

Processes

Cleaning, repairing, or assembling

137567, 364184, 364509, 417 53, F04D 1500

Patent

active

052878759

ABSTRACT:
When any component equipment of a draining pump plant is failed, the present necessity of drainage and a failure level of a drain pump involved with the failure are evaluated to determine conditions of continuing or stopping operation of the drain pump involved with the failure on the basis of the evaluated values. When the necessity of continuing the drainage operation is high, the operation is continued as far as possible, taking into account the pump failure level. The possibility of the drainage preference operation is thus maximized in the case of not only a minor failure but also a major failure of the pump, for preventing damage from a flood.

REFERENCES:
patent: 4918585 (1990-04-01), Miller
patent: 5166874 (1992-11-01), Nomaru
"Pump Plant Failure Diagnosis System", Mitsubishi Heavy Industries Technical Report; vol. 26, No. 2; Mar. 1989.
Japanese Patent Unexamined Publication No. 1-294992 Nov. 1989.

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