Title:
SUPPLIED WATER FLOW CONTROL METHOD
Document Type and Number:
Japanese Patent JPS6428709
Kind Code:
A
Abstract:
PURPOSE:To reduce installation cost by supplying the output of a water level meter provided to plural water tanks to be supplied to each water level controller, and adding all the outputs so as to decide the water flow rate to be supplied to the plural water tanks. CONSTITUTION:Input valves 16a, 16b, 16c are driven by outputs of water level controllers 17a, 17b, 17c receiving signals from water level oscillators 15a, 15b, 15c and water level meter floats 14a, 14b, 14c. Then the water flow rate to be supplied to the tanks 13a, 13b, 13c is controlled and each output is given to an adder 18, where they are summed. Then, the output of the adder 18 is supplied to an alarm setting device 19 to set upper/lower limit alarm and the number of plural delivery pumps 121-n is decided depending on the required flow rate by the pump number limiter 20 and the flow rate to be supplied is controlled. That is, since the output of each water tank controller goes to the request flow of each tank because the cross sectional area of each tank is known. Thus, in summing outputs of the water level controllers of each tank, the total flow rate to be supplied is decided, then the installation cost is reduced.
More Like This:
Inventors:
KOYAMA OSAMU
Application Number:
JP18475787A
Publication Date:
January 31, 1989
Filing Date:
July 24, 1987
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
G05D9/12; (IPC1-7): G05D9/12
Attorney, Agent or Firm:
Iwao Yamaguchi
Previous Patent: 建設機械
Next Patent: METHOD AND DEVICE FOR CONTROLLING TEMPERATURE CORRECTING DEVICE BY THERMOSTAT
Next Patent: METHOD AND DEVICE FOR CONTROLLING TEMPERATURE CORRECTING DEVICE BY THERMOSTAT