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Title:
EXTINCTION PUMP UNIT AND CONTROL METHOD FOR EXTINCTION PUMP UNIT
Document Type and Number:
Japanese Patent JP2018107970
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an extinction pump unit capable of cancelling a pump lock state by inhibiting a load from being applied to a motor.SOLUTION: An extinction pump unit 1 comprises: a motor 21 for performing rotary drive using rated current; a rotation shaft 22 connected to the motor 21; a pump 23 connected to the rotation shaft 22, the pump having a pump casing 31; a mechanical seal 32 for performing shaft-sealing on a gap between the rotation shaft 22 and the pump casing 31; detection means 81 for detecting abnormality of the motor 21 caused by adherence of the mechanical seal 32; and a control section 84 that supplies power to the motor 21 and, when power is supplied to the motor 21 and abnormality of the motor 21 is detected by the detection means 81, stops power supply to the motor 21 and supplies power to the motor 21 after a predetermined period of time.SELECTED DRAWING: Figure 2

Inventors:
SHIBATA YASUYUKI
MOROOKA KUNINOBU
ITAKURA TAKESHI
Application Number:
JP2016254314A
Publication Date:
July 05, 2018
Filing Date:
December 27, 2016
Export Citation:
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Assignee:
KAWAMOTO DENSAN KK
International Classes:
H02P29/024; A62C35/68; A62C37/00; F04D15/00
Attorney, Agent or Firm:
蔵田 昌俊
野河 信久
河野 直樹
井上 正
鵜飼 健