Title:
ポンプおよびポンプ場設備の停止方法
Document Type and Number:
Japanese Patent JP6389532
Kind Code:
B2
Abstract:
A pump station arrangement and a method for turning off a pump configured for pumping liquid via a conduit. The pump, before being turned off, being driven at an operational frequency (FN) by a control unit. The method is characterized by the steps of, ramping down the frequency of the pump due to a turn off instruction, the terminal frequency of the ramping down being equal to the operational frequency (FN) of the pump minus at least 10 Hz and the ramping down time being at least a reflection time (TR) for the conduit in question, and the terminal frequency of the ramping down not being less than 10 Hz, and stopping the pump after the ramping down.
Inventors:
Larsson, Martin
Mocander, Jurgen
Setterquist, Martin
Mocander, Jurgen
Setterquist, Martin
Application Number:
JP2016573986A
Publication Date:
September 12, 2018
Filing Date:
June 15, 2015
Export Citation:
Assignee:
Xylem IP Management Society, A Responsible Sovereign Limited
International Classes:
F04D15/00
Domestic Patent References:
| JP56069486A | ||||
| JP2001349286A | ||||
| JP2005307784A | ||||
| JP55072677A | ||||
| JP6207593A | ||||
| JP53008801A |
Foreign References:
| US5234319 | ||||
| US7755318 | ||||
| US20050123408 |
Attorney, Agent or Firm:
Shinjiro Ono
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Yasuko Tagami
Yasushi Kobayashi
Shigeo Takeuchi
Osamu Yamamoto
Yasuko Tagami