Title:
BOILER SYSTEM
Document Type and Number:
Japanese Patent JP2016057033
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To level the operation rates of boiler groups when adding a consecutive control boiler group 2B to a same steam line of a stage value control boiler group 2A.SOLUTION: A boiler system 1 comprises: a first control unit 4A that controls the combustion state of the stage value control boiler group 2A so that the steam pressure value falls within the range of a control pressure zone; and a second control unit 4B that controls the combustion state of the consecutive control boiler group 2B so that the steam pressure value maintains a target steam pressure value. The second control unit 4B sets the target steam pressure value so that it falls within the range of the control pressure zone. When a state in which the operation rate of the second boiler group 2B is less than a first threshold value continues for a first period of time, the target steam pressure value is corrected to a value higher than the target steam pressure value that is currently set; when a state in which the operation rate of the second boiler group 2B is greater than a second threshold value continues for a second period of time, the target steam pressure value is corrected to a value lower than the target steam pressure value that is currently set.SELECTED DRAWING: Figure 1
Inventors:
YAMADA KAZUYA
Application Number:
JP2014185955A
Publication Date:
April 21, 2016
Filing Date:
September 12, 2014
Export Citation:
Assignee:
MIURA KOGYO KK
International Classes:
F22B35/00; F22B37/38
Domestic Patent References:
| JP2009079875A | 2009-04-16 | |||
| JPS62228802A | 1987-10-07 | |||
| JP2010043768A | 2010-02-25 | |||
| JPH0861601A | 1996-03-08 | |||
| JPH0244104A | 1990-02-14 |
Attorney, Agent or Firm:
Iwaike Mitsuru
Ryota Kato
Ryota Kato
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