JPS5780122A - Controlling method for change-over of combustion air quantity - Google Patents

Controlling method for change-over of combustion air quantity

Info

Publication number
JPS5780122A
JPS5780122A JP15728580A JP15728580A JPS5780122A JP S5780122 A JPS5780122 A JP S5780122A JP 15728580 A JP15728580 A JP 15728580A JP 15728580 A JP15728580 A JP 15728580A JP S5780122 A JPS5780122 A JP S5780122A
Authority
JP
Japan
Prior art keywords
combustion
air quantity
blast
signal
stove
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.)
Pending
Application number
JP15728580A
Other languages
Japanese (ja)
Inventor
Katsunobu Udagawa
Nobushige Saho
Tomoyoshi Koyama
Kazuto Takarabe
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP15728580A priority Critical patent/JPS5780122A/en
Publication of JPS5780122A publication Critical patent/JPS5780122A/en
Pending legal-status Critical Current

Links

Landscapes

  • Regulation And Control Of Combustion (AREA)

Abstract

PURPOSE: To eliminate the excess blast at the start of change-over by a method wherein the blast due to the pre-established program is performed for the period of time, during which control response is unstable, just after the change-over and after the elapse of said time the normal blast turns to be performed.
CONSTITUTION: When the combustion state of a single hot blast stove is changed that of double hot blast stoves in parallel, the signal from a double stove combustion program setting unit 15 is added to the input signal of a single stove combustion program setting unit 14 for the period of time, during which the combustion air quantity is increased from the quantity necessary for a single stove combustion to the quantity targeted for a double stove combustion. The resultant signal is inputted as the primary signal through an adder 17 to a switching unit 19. Said primary signal is outputted through the switching unit 19 to a rotational frequency controlling device 9 so as to gradually and slowly increase the blast quantity from a blower 7 to the targeted combustion air quantity. After that, the secondary signal to require the combustion air quantity for targeted number of stoves in outputted from the adder 18 through the switching unit 19 to the rotational frequency controlling device 9 so as to blow the air quantity necessary for combustion of two hot blast stoves in parallel through the blower 7.
COPYRIGHT: (C)1982,JPO&Japio
JP15728580A 1980-11-07 1980-11-07 Controlling method for change-over of combustion air quantity Pending JPS5780122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15728580A JPS5780122A (en) 1980-11-07 1980-11-07 Controlling method for change-over of combustion air quantity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15728580A JPS5780122A (en) 1980-11-07 1980-11-07 Controlling method for change-over of combustion air quantity

Publications (1)

Publication Number Publication Date
JPS5780122A true JPS5780122A (en) 1982-05-19

Family

ID=15646316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15728580A Pending JPS5780122A (en) 1980-11-07 1980-11-07 Controlling method for change-over of combustion air quantity

Country Status (1)

Country Link
JP (1) JPS5780122A (en)

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