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Title:
METHOD FOR CALCULATING CONCENTRATION OF WATER TREATING CHEMICAL AND METHOD FOR AUTOMATICALLY MANAGING THE CONCENTRATION
Document Type and Number:
Japanese Patent JP3358523
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To simply and rapidly regulate a concentration of a drum in a cooling water by calculating a concentration of a heat treating chemical in the water from a total adding amount of the treating chemical, number of a concentration of the water, an evaporating water amount of the water, and a value of a makeup water.
SOLUTION: A new water of an evaporating amount, a scattering amount of a splash in a cooling tower 1 and an amount to meet a blowing water from a blowing valve 7 is supplied from a makeup water pipeline 8. A cooling water returned to a lower eater tank 5 is fed through a chemical feed tank 12 at a chemical feed point 10 provided at a circulating pipe 10. Electric conductivity meters 15, 16 are respectively provided at the pipeline 8 and the tank 5. Detection signals of the meters 15, 16 and a discharge amount sensor 13 and an operation signal of a circulating pump 6 are input to a controller 20. The controller 20 has a calculating unit and a control unit. The controller 20 outputs a chemical feed pump control signal to the pump 12.


Inventors:
Oya, Yoichi
Kataoka, Shunji
Konishi, Takashi
Kurokawa, Tsutomu
Application Number:
JP1998000011476
Publication Date:
December 24, 2002
Filing Date:
January 23, 1998
Export Citation:
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Assignee:
KURITA WATER IND LTD
International Classes:
F28F25/02; F28F27/00; F28G13/00; (IPC1-7): F28F27/00; F28G13/00
Attorney, Agent or Firm:
重野 剛