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Title:
BOILER COMBUSTION CONTROL SYSTEM AND BOILER COMBUSTION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2018/211598
Kind Code:
A1
Abstract:
Disclosed is a boiler combustion control system that outputs a fuel correction coefficient for correcting a load demand amount after feedback correction. This system comprises: a fuel correction coefficient computation unit that calculates a fuel correction coefficient on the basis of a ratio between load demand amounts before and after feedback correction, and an initial value and a fine adjustment function that define an initial value of a relationship between the load demand amount and a fuel supply amount; and a reference curve correction unit that outputs a reference curve correction coefficient for correcting the initial value and the fine adjustment function. The reference curve correction unit includes: a deviation determination unit that calculates the deviation between a measured main steam pressure and a setting main steam pressure; a period determination unit that acquires a period related to the fluctuation of the deviation; an amplitude determination unit that acquires amplitude; a reference curve correction coefficient output unit that calculates and outputs the reference curve correction coefficient on the basis of a reference curve correction function; and a reference curve correction determination unit that corrects the reference curve correction function in cases where the combination of the period and the amplitude satisfies a predetermined condition.

Inventors:
OKAMURA, Yuji (1-11 Bentenmachi, Nagasaki-sh, Nagasaki 02, 〒8528002, JP)
TANIGUCHI, Kazunori (1-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 21, 〒1008321, JP)
YAMASHITA, Toru (1-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 21, 〒1008321, JP)
KASHIMA, Nobuhiro (3-2 Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
SUTOH, Kenichiro (3-2 Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
Application Number:
JP2017/018399
Publication Date:
November 22, 2018
Filing Date:
May 16, 2017
Export Citation:
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Assignee:
NYK TRADING CORPORATION (4-1Hamamatsu-cho 2-chome, Minato-ku Tokyo, 34, 〒1056134, JP)
IDEMITSU KOSAN CO.,LTD. (1-1 Marunouchi 3-chome, Chiyoda-ku Tokyo, 21, 〒1008321, JP)
NIPPON YUSEN KABUSHIKI KAISHA (3-2 Marunouchi 2-chome, Chiyoda-ku Tokyo, 05, 〒1000005, JP)
International Classes:
F22B35/00
Foreign References:
JP2006200875A2006-08-03
JP2013155898A2013-08-15
JP2013164195A2013-08-22
JP2013181701A2013-09-12
JP2014126305A2014-07-07
JP2008008522A2008-01-17
JP2002023806A2002-01-25
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (3F Shinjuku Gyoen Bldg, 3-10 Shinjuku 2-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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