Title:
CIRCUIT FOR PREVENTING PUMP FROM EXCESSIVELY FLOWING
Document Type and Number:
Japanese Patent JPH05223060
Kind Code:
A
Abstract:
PURPOSE: To compose a large-sized pump equipment having plurality of pumps run in parallel and prevent the remining damages due to the running condition of excessive flow when any one of a plurality of the pumps under the parellel running condition are tripped.
CONSTITUTION: A rotational frequency control system of respective pumps 10, 11 is constituted to be provided with a rotational frequency increase blocking circuit for limiting the rotational frequency before trip to the maximum running point A2 according to the trip signal from the other pump.
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Inventors:
HAMANO KOJIRO
Application Number:
JP5873192A
Publication Date:
August 31, 1993
Filing Date:
February 13, 1992
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F04B49/10; F04D15/00; (IPC1-7): F04B49/10; F04D15/00
Attorney, Agent or Firm:
Kimura Masami