JPS5835326A - Combustion control device for burner - Google Patents
Combustion control device for burnerInfo
- Publication number
- JPS5835326A JPS5835326A JP56133348A JP13334881A JPS5835326A JP S5835326 A JPS5835326 A JP S5835326A JP 56133348 A JP56133348 A JP 56133348A JP 13334881 A JP13334881 A JP 13334881A JP S5835326 A JPS5835326 A JP S5835326A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- burners
- valve
- gas
- burner
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 19
- 239000002737 fuel gas Substances 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003303 reheating Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
- F23N1/025—Regulating fuel supply conjointly with air supply using electrical or electromechanical 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
- F23N2237/00—Controlling
- F23N2237/02—Controlling two or more burners
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は焼入れ炉ｔたは暁戻し炉などのような加熱炉
のバーナーの燃焼制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion control device for a burner in a heating furnace such as a quenching furnace or a reheating furnace.
従来、例えば鋼管の焼入れ、焼戻しを連続炉で操業して
いるときに、事故等で鋼管の抽出を止められると燃料用
ガス量が非常に絞られた状態になり、その比率祉焼入れ
炉、焼戻し炉の各シー１７によって夫々異なるが、−例
として、焼入れ炉の予熱帯て＃ｉ１：２０のガス量とな
る。すなわちターンダウンが入・ となる。Conventionally, for example, when quenching and tempering steel pipes were operated in a continuous furnace, if the extraction of the steel pipes was stopped due to an accident, the amount of fuel gas would be extremely limited, and the ratio would be reduced. Although it differs depending on each sea 17 of the furnace, for example, the amount of gas in the preheating zone of the quenching furnace is #i1:20. In other words, the turndown is turned on.
通常、固定オリフィスを用いる流量一定では流量のター
ンダウンは殊が限度である。したがって、賜以下のガス
量となったときには流量の検出ができず、ガス量の制御
ができないことになる。 −また、バーナーの方も２
００定常流量のバーナーにおいて、流量が１になるとバ
ーナーの流速が確保できなくなって燃焼状態が不安定と
なる。Typically, flow rate turndown is particularly limited at constant flow rates using fixed orifices. Therefore, when the gas amount is below the limit, the flow rate cannot be detected and the gas amount cannot be controlled. - Also, the burner is 2
In a burner with a steady flow rate of 0.00, when the flow rate reaches 1, the flow rate of the burner cannot be ensured and the combustion state becomes unstable.
この発明Ｆｉこのような問題点を解決するためになされ
たもので、バーナーを単位流量で燃焼を行なう単位バー
ナー複数個で４って構成し、燃料用ガスの流量が予め設
定した値よシ減少したときは、上記複数ｓのバーナーの
うち所定−数のバーナーを消火して、残シのバーナーに
よ如燃焼を行なうようにしたバーナーの燃焼制御装置を
提供するものである。This invention was made in order to solve these problems.The burner is composed of a plurality of unit burners that perform combustion at a unit flow rate, and the flow rate of fuel gas is reduced by a preset value. When this occurs, a predetermined number of burners among the plurality of burners are extinguished, and the remaining burners are used to carry out combustion.
以下、図面に基づいてこＯ発明の一実施例について説明
する。Hereinafter, one embodiment of this invention will be described based on the drawings.
図はこの発明の一実地例を示す系統図である。The figure is a system diagram showing a practical example of this invention.
先づ、燃料用ガスおよび燃焼用エアーの流量の制御につ
いて説明する。First, control of the flow rates of fuel gas and combustion air will be explained.
図において、（１）は燃料用ガスライン、（２）は燃焼
用エアーライン、（３）は大流量計測用オリフィス、（
６ｇ）はガスの大流量計測用オリフィスで、予め設定し
た流量以上の流量を計測するもの、（４）は小流量針側
用オリフィス、（４ｇ）ｎガスの小流量計測用オリフィ
スで、予め設定した流量以下の流量を”計測するもの、
（５ｇ）はガスの大流量側流路、（６ｇ）はガスの小流
量側流路、（７）Ｆｉ第１遣断弁、σｇ）はガスの鯖１
遣断弁で、大流量側流路（５ｇ）に挿入されている。（
８）は調節弁、（８ｇ）はガスの調節弁、（９）は演算
装置で、炉の温度、ガスの流量などめ計測結果を電気信
号に変換して入力した後、この入力信号を演算して、制
御用信号を出力するもの。In the figure, (1) is a fuel gas line, (2) is a combustion air line, (3) is an orifice for measuring a large flow rate, (
6g) is an orifice for measuring a large flow rate of gas, which measures a flow rate higher than a preset flow rate, (4) is an orifice for the small flow rate needle side, and (4g) is an orifice for measuring a small flow rate of n gas, which is preset. A device that measures a flow rate lower than the flow rate
(5g) is the gas flow path on the large flow rate side, (6g) is the gas flow path on the small flow rate side, (7) Fi 1st shutoff valve, σg) is the gas flow path 1
This is a cutoff valve and is inserted into the high flow rate side flow path (5g). (
8) is a control valve, (8g) is a gas control valve, and (9) is a calculation device that converts measurement results such as furnace temperature and gas flow rate into electrical signals and inputs them, and then calculates these input signals. and outputs control signals.
（至）はバーナーで、４つの、単位バーナー（１０ｍ）
（１０ｂ） （１０ｃ） （１０ｄ）からなっている。(To) is a burner, 4 unit burners (10m)
It consists of (10b) (10c) (10d).
αやは加熱炉、（１２ｇ）はガスの［２遣断弁でｉる。α is a heating furnace, and (12g) is a gas [2-turn-off valve].
ガスの大流量側流路（５ｇ）とガスの小流量側流路（６
ｇ）とはガスの第１遣断弁σｇ）を出た後で合流し、ガ
スの調節弁（８ｇ）、第２速断弁（１２ｇ）を経て、バ
ーナー（１０ｍ） （１０ｃ）に接続されている。バー
ナー（１０ｂ） （１０ｄ）は第２遮断弁を経ずに直東
接続されている。The large flow rate gas channel (5g) and the small gas flow channel (6g)
g) is connected to the burner (10m) (10c) after exiting the first gas shutoff valve σg) and passing through the gas control valve (8g) and second speed shutoff valve (12g). There is. The burners (10b) (10d) are connected directly to the east without passing through the second shutoff valve.
以上の構成において、ガスの流量は大流量計測用オリフ
ィス（３ｇ）と小流量計測用オリフィス（４ｇ）とで計
測され、流故発信機（１３ｇ）からそのｉｔ計測結果出
力され、この出力は演算装置ｆ （９）へ入力芒れる。In the above configuration, the gas flow rate is measured by the large flow rate measurement orifice (3g) and the small flow rate measurement orifice (4g), and the IT measurement result is output from the flow transmitter (13g), and this output is calculated. Input to device f (9).
演算装置は演算結果を出力し、この出力によ如駒節弁（
８ｇ）が制御される。The calculation device outputs the calculation result, and this output allows the
8g) is controlled.
ここで、事故等でパイプの抽出が止められると、ガス量
が絞られるので、演算、装置の出力により鮎１遍断弁（
７ｇ）を閉じて、小流量計測用オリフィス（４ｇ）だけ
で流量を計測して、その結果により調節弁（８ｇ）を−
節して、流量を制御するこのようにすることにより、大
流量から極めて小場な流量迄流量制御を行なうことがで
きる。If the extraction of the pipe is stopped due to an accident, etc., the amount of gas will be reduced, so the Ayu one-stop valve (
7g) is closed, the flow rate is measured only with the small flow rate measuring orifice (4g), and the control valve (8g) is adjusted based on the result.
By controlling the flow rate in this way, the flow rate can be controlled from a large flow rate to an extremely small flow rate.
以上は燃料用ガスの流斂制御についてであるか、燃焼用
エアーについても同様の構成になっている。The above is about the flow control of fuel gas, and the same structure is used for combustion air.
（６りはエアーの大流量計測用オリフィスで、予め設定
した流量以上の流量を計測するもの、（４ａ）はエアー
の小流量計測用オリフィスで、予め設定した流量以下の
流量を計測する奄の・、（５ｍ）はエアーの大流量側流
路、’（６ｍ）はエアーの小流量側流路、（７，）はエ
アーの縞１遣断弁で、大流量側流路（５＆）に挿入され
ている。（８ａ）はエアーの調節弁、（１２ａ）はエア
ーの第２遺１弁である
以上の構成により、上述のガスの場合と同様に、流量の
制御ができる。(6 is an orifice for measuring a large flow rate of air, which measures a flow rate higher than a preset flow rate, and (4a) is an orifice for measuring a small flow rate of air, which measures a flow rate lower than a preset flow rate.・, (5m) is the air flow path on the high flow rate side, '(6m) is the air flow path on the low flow rate side, (7,) is the air stripe 1 cutoff valve, which is connected to the high flow rate side flow path (5&). (8a) is an air control valve, and (12a) is a second air valve.With the above configuration, the flow rate can be controlled in the same way as in the case of gas described above.
次に、バーナーの燃焼制御について説明する。Next, combustion control of the burner will be explained.
炉の加熱は、通常は４つの単位ノ（−ナー（１０ｍ）（
１０ｂ） （１０・＞ （１０ａ）を用いてガスを燃焼
させているが、事故等で流量が減少したときは、演算装
置（９）の出力によりＩ２速断弁（１２ｇ）を閉じて・
（ニナ（１０ｍ） （１０ｃ）は消火して、ノ（−ナー
（１０ｂ）（１０ａ）のみで燃焼なり〕なう。Furnace heating is usually done in four units (10m).
10b) (10・> (10a) is used to combust gas, but if the flow rate decreases due to an accident etc., the I2 speed cutoff valve (12g) is closed using the output of the calculation device (9).
(Nina (10m) (10c) will be extinguished, and only No (-na (10b) and (10a) will burn)] Now.
このようにすれば、全体のガス流量が減少しても、バー
ナー（１０ｂ） （１０ａ）については、規定のガス流
量が確保され安定した燃焼を行なうことカニできる。な
お、このときエアーの第２の遣断弁（１２ａ）も閉じら
れる。In this way, even if the overall gas flow rate decreases, the burners (10b) (10a) can ensure a specified gas flow rate and perform stable combustion. Note that at this time, the second air shutoff valve (12a) is also closed.
なお、単位バーナーの数は、上記実總例では４傭となっ
ているが、４個に限るものでは力い。In addition, although the number of unit burners is 4 in the above-mentioned example, it is difficult to limit the number to 4.
以上説明し丸ように、仁の発明によれば、バーナーを、
単位流量で燃焼を行なう単位バーナー複数個でもって構
成し、燃料用ガスの流量が予め設定した値より減少した
ときは、上記複数個のバーナーのうち所定個数のバーナ
ーを消火して、残りのバーナーにより燃焼を行なうよう
にしたので、燃料用ガスの流量が減少しても、上記残り
のバーナーについては規定の流量が確保され、安定した
燃焼−を行なうことができる。As explained above, according to Jin's invention, the burner,
It is composed of a plurality of unit burners that perform combustion at a unit flow rate, and when the flow rate of fuel gas decreases below a preset value, a predetermined number of burners among the plurality of burners are extinguished and the remaining burners are turned off. Therefore, even if the flow rate of the fuel gas decreases, the prescribed flow rate is ensured for the remaining burners, and stable combustion can be performed.
図はこの発明の一実権例を示す系統図である。
図において、（１）は燃料用ガスライン、（２）は燃焼
用エアーライン、（３）は大流量計測用オリフィス、（
４）は小流量針側用オリフィス、（５）は大流量＼側流
路、（６）は小流量側流路、（７）は第１遣断弁、（８
）は調節弁、（９）は演算装置、（ＩＱはバーナー、（
１カは加熱炉、（６）は第２遣断弁である。The figure is a system diagram showing an example of actual ownership of this invention. In the figure, (1) is a fuel gas line, (2) is a combustion air line, (3) is an orifice for measuring a large flow rate, (
4) is the orifice for the small flow rate needle side, (5) is the large flow rate side flow path, (6) is the small flow rate side flow path, (7) is the first disconnection valve, (8
) is the control valve, (9) is the arithmetic unit, (IQ is the burner, (
1 is a heating furnace, and (6) is a second shutoff valve.
Claims (1)
ナーを複数個設けて構成し、燃料用ガスの流量が予め設
定した値よυ減少したときは、上記複数−のバーナーの
うち所定個数のバーナーを消火して、残りのバーナーに
よυ燃焼を行なうようにしたことを特徴とするバーナー
の燃焼制御装置。The heating device burner is configured by providing a plurality of unit burners that perform combustion at a unit flow rate, and when the flow rate of fuel gas decreases by a preset value, a predetermined number of burners among the plurality of burners are activated. A burner combustion control device characterized in that the burner is extinguished and the remaining burner performs υ combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56133348A JPS5835326A (en) | 1981-08-27 | 1981-08-27 | Combustion control device for burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56133348A JPS5835326A (en) | 1981-08-27 | 1981-08-27 | Combustion control device for burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5835326A true JPS5835326A (en) | 1983-03-02 |
Family
ID=15102614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56133348A Pending JPS5835326A (en) | 1981-08-27 | 1981-08-27 | Combustion control device for burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6170319A (en) * | 1984-09-13 | 1986-04-11 | Sumitomo Metal Ind Ltd | Thinned-out control of burner for continuous heating furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5095820A (en) * | 1973-12-26 | 1975-07-30 |
-
1981
- 1981-08-27 JP JP56133348A patent/JPS5835326A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5095820A (en) * | 1973-12-26 | 1975-07-30 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6170319A (en) * | 1984-09-13 | 1986-04-11 | Sumitomo Metal Ind Ltd | Thinned-out control of burner for continuous heating furnace |
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