Title:
OPERATION CONTROL METHOD AND OPERATION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2017198120
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a water feed pump operation control method and a water feed pump operation control device capable of restricting a water level variation before and after stopping operation of the water feed pump.SOLUTION: Upon reaching of an upstream side water level of pump gate facility to a predetermined water discharging operation start water level [Yes at a step #10], a submerged pump is started [a step #11] to start the water discharging operation and upon reaching to a predetermined water discharging operation stopped state [Yes at a step #15], the submerged pump is stopped to finish the water discharging operation [a step #16], the number of revolution in operation of the submerged pump is changed over to a lower number of water supply stopping preparation than the predetermined number of revolution during the water discharging operation during a time of starting water discharging operation [a step #11] to a finishing time [a step #16] so as to start the stopping preparation operation [a step #14].SELECTED DRAWING: Figure 5
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Inventors:
IWAMI HIROYUKI
Application Number:
JP2016088466A
Publication Date:
November 02, 2017
Filing Date:
April 26, 2016
Export Citation:
Assignee:
KUBOTA KK
International Classes:
F04B49/06; F04D15/00
Domestic Patent References:
| JP2002235671A | 2002-08-23 | |||
| JPS6134394A | 1986-02-18 | |||
| JP2004308508A | 2004-11-04 | |||
| JP2010236498A | 2010-10-21 |
Attorney, Agent or Firm:
Patent business corporation r&c