JPS6414506A - Automatic controller for boiler - Google Patents

Automatic controller for boiler

Info

Publication number
JPS6414506A
JPS6414506A JP62167507A JP16750787A JPS6414506A JP S6414506 A JPS6414506 A JP S6414506A JP 62167507 A JP62167507 A JP 62167507A JP 16750787 A JP16750787 A JP 16750787A JP S6414506 A JPS6414506 A JP S6414506A
Authority
JP
Japan
Prior art keywords
signal
stage
flow rate
ratio
air flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62167507A
Other languages
Japanese (ja)
Other versions
JPH0529801B2 (en
Inventor
Mitsuo Tanaka
Teruo Murao
Toshie Monoe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP62167507A priority Critical patent/JPS6414506A/en
Publication of JPS6414506A publication Critical patent/JPS6414506A/en
Publication of JPH0529801B2 publication Critical patent/JPH0529801B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Abstract

PURPOSE:To effect low NOX combustion, by controlling air-fuel ratio, gas mixing ratio (GM ratio) and primary gas mixing ratio (PG ratio) through a damper. CONSTITUTION:The signal of an A-stage fuel flow rate detector 6 is converted by a function generator 107 for setting air-fuel ratio to produce an air flow rate demanding signal, and is corrected by a NOX master signal in a multiplyer 108 to produce the optimum air flow rate demanding signal. The air flow rate demanding signal is compared with the signal of an A-stage air flow rate detector 14 in a comparing operator 100 and the difference is operated in a proportional integrator 110 to produce an A-stage W/B inlet port damper operating signal. GM ratio program is operated by a function generator 111 based on the base of the signal of the A-stage air flow rate detector 14, then, is operated by another multiplyer 112 to produce an A-stage mixed gas damper operating signal. In the control of a primary gas damper, PG ratio program is operated by another function generator 113 based on the signal of the A-stage air flow rate detector 14, then, is operated by another multiplyer 114 to produce a primary gas damper operating signal. The air-fuel ratios, the GM ratios and the PG ratios are corrected by the NOX master signal in the same manner in the control of B-stage and C-stage.
JP62167507A 1987-07-03 1987-07-03 Automatic controller for boiler Granted JPS6414506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62167507A JPS6414506A (en) 1987-07-03 1987-07-03 Automatic controller for boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62167507A JPS6414506A (en) 1987-07-03 1987-07-03 Automatic controller for boiler

Publications (2)

Publication Number Publication Date
JPS6414506A true JPS6414506A (en) 1989-01-18
JPH0529801B2 JPH0529801B2 (en) 1993-05-06

Family

ID=15850961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62167507A Granted JPS6414506A (en) 1987-07-03 1987-07-03 Automatic controller for boiler

Country Status (1)

Country Link
JP (1) JPS6414506A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03207902A (en) * 1990-01-08 1991-09-11 Hitachi Ltd Control device for temperature rise at the time of starting boiler
EP1051953A2 (en) 1994-06-17 2000-11-15 Terumo Kabushiki Kaisha Indwelling stent and the method for manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03207902A (en) * 1990-01-08 1991-09-11 Hitachi Ltd Control device for temperature rise at the time of starting boiler
EP1051953A2 (en) 1994-06-17 2000-11-15 Terumo Kabushiki Kaisha Indwelling stent and the method for manufacturing the same

Also Published As

Publication number Publication date
JPH0529801B2 (en) 1993-05-06

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