Title:
AUTOMATIC COMBUSTION CONTROLLER FOR MARINE BOILER
Document Type and Number:
Japanese Patent JPS55142915
Kind Code:
A
Abstract:
PURPOSE:To obtain an adequate lead signal for the control operation, by detecting opening degrees of forward and backward nozzle valves of a main turbine and then converting the detection into a steam flow rate signal for the main turbine through a function generator that shows characteristic curves of the nozzle valves. CONSTITUTION:In a function generator 503, characteristics curves of forward and backward nozzle valves 201, 301 are determined. In this way, steam consumptions and their changing amounts for forward and backward turbines 200, 300 can be accurately calculated. Accordingly, both for the forward turbine 200 and the backward turbine 300 and for their loads both when they are big and small, an adequate level of lead signals can be obtained in accordance with load changes of the forward and the backward turbines.
Inventors:
EZAKI FUMIAKI
Application Number:
JP5056579A
Publication Date:
November 07, 1980
Filing Date:
April 24, 1979
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F22B35/00; B63H21/21; B63H21/22; F01K13/02; F01K15/02; F01K15/04; (IPC1-7): B63H21/22; F01K13/02; F01K15/02; F22B35/00