JPH0674441A - Fuel-air ratio controller for burner - Google Patents
Fuel-air ratio controller for burnerInfo
- Publication number
- JPH0674441A JPH0674441A JP4202880A JP20288092A JPH0674441A JP H0674441 A JPH0674441 A JP H0674441A JP 4202880 A JP4202880 A JP 4202880A JP 20288092 A JP20288092 A JP 20288092A JP H0674441 A JPH0674441 A JP H0674441A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- fuel
- air
- fuel valve
- air damper
- 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
Links
Classifications
-
- Y02E20/328—
Landscapes
- Regulation And Control Of Combustion (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はバーナ用の燃料と空気の
比率調節器（バーナ用空撚ポジショナ）に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel / air ratio adjuster for burners (air twist positioner for burners).
【０００２】[0002]
【従来の技術】ボイラ・冷温水機・各種工業炉・その他
省エネルギーシステムを含むあらゆる熱設備にバーナが
使用されている。バーナは，熱設備の負荷変動に対応し
て燃料と空気の供給量を変化させねばならないが，燃焼
トラブルを起こさないように運転する為には，運転設計
上種々のルールがあり，また熱設備の仕様や特性に合わ
せた条件設定が必要であり，極めて複雑である。2. Description of the Related Art Burners are used in all kinds of thermal equipment including boilers, water heaters / coolers, various industrial furnaces, and other energy-saving systems. The burner must change the supply amount of fuel and air according to the load change of the heat equipment, but there are various rules in the operation design in order to operate without causing combustion trouble, and It is extremely complicated because it is necessary to set the conditions according to the specifications and characteristics of.
【０００３】現在，中・小型バーナにおいては，燃料と
空気の比率調節には，主として燃料弁と空気ダンパを機
械リンクで結ぶ方式が使用されている。これは，発想と
しては単純な方式であるが，リンク機構は複雑になり，
調整に時間を要したり，機械的な磨耗，リンク接続部の
脱落や設定のずれが発生するなどの問題があって，信頼
性にかけたものであった。At present, in the medium and small burners, a method of connecting a fuel valve and an air damper by a mechanical link is mainly used for adjusting the ratio of fuel and air. This is a simple method as an idea, but the link mechanism becomes complicated,
There was a problem that adjustment took a long time, mechanical wear, drop of link connection part and misalignment of settings occurred, and it was not reliable.
【０００４】大型バーナでは，機械リンクをなくして燃
料弁，及び空気ダンパの各軸に，操作器を直接接続して
比率調節する方式が使われているが，高価なシステム機
器の組合わせとなって，コスト的に中・小型バーナには
使用できなかった。In a large-scale burner, a system is used in which a mechanical link is eliminated and an actuator is directly connected to each axis of a fuel valve and an air damper to adjust the ratio, but this is a combination of expensive system equipment. Therefore, it could not be used for small and medium burners in terms of cost.
【０００５】[0005]
【発明が解決しょうとする課題】前記の複雑な燃料と空
気の制御をコンパクトな調節器にまとめることが出来れ
ば，コスト，取扱い性，設備としての小型化などに大き
なメリットがあり，従来方式からの転換が飛躍的に進む
と考えられる。If the complicated control of fuel and air can be integrated into a compact controller, there are great advantages in cost, handleability, downsizing of equipment, etc. It is thought that the transformation of the will will progress dramatically.
【０００６】上記に鑑み，本発明は，燃焼装置を簡素化
すると共にコストを低減させ，大型バーナのみでなく中
・小型バーナにも使用できる燃料と空気の比率調節器を
提供しょうとするものである。In view of the above, the present invention intends to provide a fuel-air ratio adjuster which simplifies the combustion apparatus and reduces the cost, and which can be used not only for a large-scale burner but also for a medium- or small-scale burner. is there.
【０００７】[0007]
【課題を解決するための手段】本発明のバーナ用の燃料
と空気の比率調節器は，バーナの燃焼において，熱設備
の負荷変動の入力信号を受けて比例して燃料弁制御用操
作器（コントロールモータ）の開度出力を制御する手段
と，任意の関数をデジタル値でプログラムした折線特性
によって空気ダンパー制御用操作器（コントロールモー
タ）の開度出力を制御する手段を持つ調節器であり，上
記調節器は，（ａ）ボイラ又は炉の圧力，又は温度の調
節信号（通常４〜２０ｍＡ ＤＣ又は１〜５Ｖ ＤＣ或
いは０〜１３５Ω）の電流値，電圧値又は抵抗値の何れ
の信号も受け入れられる手段（以后手段（ａ）と言
う），（ｂ）前（ａ）項の１つの調節信号を受けて燃料
弁と空気ダンパの開度出力信号を発し燃料と空気の流量
を調節する手段（以后手段（ｂ）と言う），（ｃ）燃料
弁，及び空気ダンパの各軸にそれぞれ直結した操作器
（コントロールモータ）の始点（ゼロ調整），終点（ス
パン調整）の開度を，それぞれ設定する手段（以后手段
（ｃ）と言う），（ｄ）前（ｃ）項の燃料弁及び空気ダ
ンパの開度をデジタル表示する手段（以后手段（ｄ）と
言う），（ｅ）前（ａ）項の燃料調節信号により，最低
燃焼位置から最高燃焼位置まで燃料弁開度を変化させ
て，各ポイント毎に排ガス中のＯ２，ＣＯ２，ＮＯｘま
たはＣＯの単独又は複数の計測に基づき空気ダンパ開度
を最良の位置に設定する（キー打ち込みによる設定）手
段（以后手段（ｅ）と言う），（ｆ）前（ｅ）項の空気
ダンパ開度パーセントをデジタル表示する手段（以后手
段（ｆ）と言う），（ｇ）燃焼量が変化する時，ハイ，
ロー選択により，空気先行型の動作を行わせ，発煙を防
止する手段（以后手段（ｇ）と言う），（ｈ）折線特性
を調整する関数パターンのゲイン設定，燃料弁の制御特
性の変更，折線の各設定ポイント間の特性のリニアライ
ズ化，負荷変動の応答特性の変更を行なう手段（以后手
段（ｈ）と言う），（ｉ）外部信号を受けて，プレパー
ジの為の空気ダンパの強制開閉及び低燃焼位置点火を行
なわせる手段（以后手段（ｉ）と言う），（ｊ）燃料弁
制御用，又は空気ダンパ制御用操作器（コントロールモ
ータ）がスティック（固着）を起したときに，それを検
出して異常信号（警報）を発する手段（以后手段（ｊ）
と言う），（ｋ）自動運転，手動運転の選択切り替え手
段（以后手段（ｋ）と言う），を備えることを特徴とす
る。SUMMARY OF THE INVENTION A fuel-air ratio controller for a burner according to the present invention proportionally receives a load fluctuation input signal of a thermal facility during combustion of the burner and proportionally operates a fuel valve control operator ( It is a controller that has a means for controlling the opening output of the control motor) and a means for controlling the opening output of the air damper control actuator (control motor) according to the polygonal line characteristics in which an arbitrary function is programmed with a digital value. The controller receives (a) a current value, a voltage value, or a resistance value signal of a pressure or temperature control signal (normally 4 to 20 mA DC or 1 to 5 V DC or 0 to 135 Ω) of a boiler or furnace. Means (hereinafter referred to as means (a)), (b) means for receiving the one adjustment signal of the preceding (a) and issuing an opening output signal of the fuel valve and the air damper to adjust the flow rates of fuel and air ( Later means (B)), (c) means for setting the opening of the starting point (zero adjustment) and the ending point (span adjustment) of the actuator (control motor) directly connected to the respective axes of the fuel valve and the air damper. (Hereinafter referred to as means (c)), (d) means for digitally displaying the opening of the fuel valve and the air damper in the preceding (c) (hereinafter referred to as means (d)), (e) before (a). The fuel control signal changes the fuel valve opening from the lowest combustion position to the highest combustion position, and the air damper is opened based on single or multiple measurements of O 2 , CO 2 , NOx or CO in the exhaust gas at each point. Means for setting the degree to the optimum position (setting by keying) (hereinafter referred to as means (e)), (f) means for digitally displaying the air damper opening percentage of the previous (e) item (after means (f)) , (G) When the combustion amount changes ,Yes,
By selecting low, air-preceding type operation is performed to prevent smoke generation (hereinafter referred to as means (g)), (h) gain setting of function pattern for adjusting broken line characteristics, change of control characteristics of fuel valve, Linearization of characteristics between each set point of broken line, means for changing response characteristics of load fluctuation (hereinafter referred to as means (h)), (i) Forced air damper for pre-purge by receiving external signal Means (hereinafter referred to as means (i)) for performing opening and closing and low combustion position ignition, (j) fuel valve control or air damper control actuator (control motor) causes stick (sticking), Means for detecting it and issuing an abnormal signal (alarm) (hereafter means (j))
(K)), and (k) automatic driving and manual driving selection switching means (hereinafter referred to as means (k)).
【０００８】なお本発明の実施に際しては下記をも備
え，本発明はそれをも含むものである。（１）低ＮＯｘ
バーナに於いて，燃焼用空気に混ぜる燃焼排ガスの供給
量を調節するダンパの制御を行わしめる開度出力信号を
発する手段（以后手段（ｌ）と言う）を備えることを特
徴とする上記本発明のバーナ用の燃料と空気の比率調節
手段。In implementing the present invention, the following is also provided, and the present invention also includes it. (1) Low NOx
The burner is provided with means (hereinafter referred to as means (l)) for issuing an opening degree output signal for controlling a damper for adjusting the supply amount of the combustion exhaust gas mixed with the combustion air. Fuel-to-air ratio adjusting means for the burner of.
【０００９】前記手段（ｌ）について補足説明するに，
低ＮＯｘバーナでは燃焼用空気に燃焼排ガス（煙道より
誘引）を混ぜて，燃焼用空気の酸素分圧を下げる方法が
しばしば行われるが，手段（ｌ）はこのためのものであ
り，手段（ｂ）より排ガス循環ダンパを制御する開度出
力信号を取出している。To supplementarily explain the means (l),
In a low NOx burner, combustion air is mixed with combustion exhaust gas (attracted from the flue) to lower the oxygen partial pressure of the combustion air, and means (l) is for this purpose. The opening degree output signal for controlling the exhaust gas circulation damper is taken out from b).
【００１０】[0010]
【作用】上記本発明は下記の発想に基づいている。 通常，関数ポジショナと称されているものがあるが，
本発明ではバーナの燃料と空気の制御に適した手段を備
えたポジショナを開発し，燃焼制御に必要な種々のプロ
グラムを設定できるようにする。 従来から大型バーナで使用されていた機械リンクのな
い方式では，燃料と空気のそれぞれが制御機能を持って
動作していたが，この方式を集約して一体化させ，これ
によりコストを半減させる。The present invention is based on the following idea. Usually, there is a so-called function positioner,
In the present invention, a positioner equipped with means suitable for controlling the fuel and air of the burner is developed so that various programs required for combustion control can be set. In the conventional method without a mechanical link used in large burners, each of fuel and air operated with a control function, but this method is integrated and integrated, which reduces the cost by half.
【００１１】上記本発明は次の如く機能する。 手段（ａ），（ｂ）により，システム機器を組合わす
ことなく，この調節器（ポジショナ）１台で燃料〜空気
の比率調節ができる。 手段（ｅ）により，例えば，１０折線関数（設定ポイ
ント数１１点）で流量調節が自由に設定できる。The present invention described above functions as follows. By means of means (a) and (b), the ratio of fuel to air can be adjusted by this one adjuster (positioner) without combining system devices. By means of the means (e), the flow rate can be freely set by, for example, a 10-line function (11 set points).
【００１２】手段（ｅ）と（ｈ）の燃料と空気の流量
制御特性及び制御応答特性等の調整機能により機械リン
クでは出来ないきめ細かな燃料に対する空気の制御と，
その調整が可能である。（図１の丸Ｙ参照）。 手段（ｄ），（ｆ）により，デジタルの開度表示によ
り現場調整が出来るので，調整作業が容易である。The means (e) and (h) for adjusting the flow rate control characteristics of fuel and air, the control response characteristics, and the like adjust the air to the fine fuel that cannot be achieved by the mechanical link.
The adjustment is possible. (See circle Y in FIG. 1). With the means (d) and (f), the on-site adjustment can be performed by the digital opening degree display, so that the adjustment work is easy.
【００１３】手段（ｇ）により，発煙防止などに対応
した制御ができる。 手段（ａ）〜（ｊ）（特に手段（ｂ））により，大型
バーナに使用されている高価な制御システムに匹敵する
機能を持ちながら，非常に低価格である。The means (g) makes it possible to perform control corresponding to smoke prevention. The means (a) to (j) (particularly the means (b)) have a function comparable to an expensive control system used in a large-scale burner, but are very low in cost.
【００１４】手段（ｉ）により，プレパージ動作，低
燃焼位置点火など，バーナの運転に必要な機能を備えて
おり，外部回路不要でシステムの構成が容易である。 手段（ｊ）により，燃料弁制御用，空気ダンパ制御用
操作器（コントロールモータ）がスティック（固着）を
起したときに，それを検出して異常信号（警報）を発し
安全を保証する。（動作原理としては例えば，Ｅ／Ｅポ
ジショナからモータに開閉の出力がだされてたモータが
スティックを起こした場合に開閉動作が出来ないために
この動きを検出しているフィードバック抵抗値が変化し
ない，この状態をスティック検出回路で検知して異常信
号を出す。） 手段（ｌ）により，開度出力信号を利用して，排ガス
循環ダンパの制御（窒素酸化物抑制燃焼）にも利用でき
る（図１の丸Ｘ参照）。The means (i) has the functions necessary for the operation of the burner, such as the pre-purge operation and the ignition at the low combustion position, and the system configuration is easy without the need for an external circuit. By means (j), when the fuel valve control / air damper control operating device (control motor) causes a stick (sticking), it is detected and an abnormal signal (alarm) is issued to ensure safety. (As a principle of operation, for example, if the output of opening / closing from the E / E positioner is output to the motor and the motor causes a stick, the opening / closing operation cannot be performed, so the feedback resistance value that detects this movement does not change. , This state is detected by the stick detection circuit and an abnormal signal is output.) By means (1), the opening output signal can be used to control the exhaust gas circulation damper (nitrogen oxide suppression combustion) (Fig. 1 circle X).
【００１５】[0015]
【実施例】図１は本発明のバーナ用の燃料と空気の比率
調節器（空撚ポジショナ）の１実施例のブロック図であ
り，これにてうまく燃料と空気の調節比率の制御が機能
した。なお図２はこの調節器の外観図である。FIG. 1 is a block diagram of one embodiment of a fuel / air ratio adjuster (air twist positioner) for a burner according to the present invention, in which the control of the fuel / air adjustment ratio worked well. . FIG. 2 is an external view of this adjuster.
【００１６】[0016]
【発明の効果】燃料弁，及び空気ダンパに，それぞれ直
接に操作器を接続して連動させることにより，燃焼装置
を簡素化すると共に，従来の大型バーナに使用されてい
る方式を大幅に改良してコストを半減させることによっ
て，中・小型バーナにも使用できる燃料と空気の比率調
節器の提供が可能となった。By directly connecting the fuel valve and the air damper to the interlocking actuators and interlocking them with each other, the combustion apparatus can be simplified and the system used in the conventional large-scale burner can be greatly improved. By reducing the cost by half, it has become possible to provide a fuel / air ratio controller that can be used for small and medium burners.
【図１】本発明のバーナ用の燃料と空気の比率調節器
（空撚ポジショナ）の１実施例のブロック図である。FIG. 1 is a block diagram of an embodiment of a fuel-air ratio adjuster (air twist positioner) for a burner according to the present invention.
【図２】図１の比率調節器の外観図であり，デジタル表
示，表示灯，操作キーを示す。2 is an external view of the ratio adjuster of FIG. 1, showing a digital display, an indicator light, and operation keys.
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成５年１月２０日[Submission date] January 20, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】[0007]
【課題を解決するための手段】本発明は，バーナの燃焼
において，熱設備の負荷変動の入力信号を受けて比例し
て燃料弁制御用操作器（コントロールモータ）の開度出
力を制御する手段と，任意の関数をデジタル値でプログ
ラムした折線特性によって空気ダンパー制御用操作器
（コントロールモータ）の開度出力を制御する手段を持
つ調節器であり，上記調節器は，（ａ）ボイラ又は炉の
圧力，又は温度の調節信号（通常４〜２０ｍＡ ＤＣ又
は１〜 ５Ｖ ＤＣ或いは０〜１３５Ω）の電流値，電
圧値又は抵抗値の何れの信号も受 け入れられる手段
（以后手段（ａ）と言う），（ｂ）前（ａ）項の１つの
調節信号を受けて燃料弁と空気ダンパの開度出力信号を
発 し燃料と空気の流量を調節する手段（以后手段
（ｂ）と言う），（ｃ）燃料弁，及び空気ダンパの各軸
にそれぞれ直結した操作器（コントロールモ ータ）の
始点（ゼロ調整），終点（スパン調節）の開度を，それ
ぞれ設定する手 段（以后手段（ｃ）と言う），（ｄ）
前（ｃ）項の燃料弁及び空気ダンパの開度をデジタル表
示する手段（以后手段 （ｄ）と言う），（ｅ）前
（ａ）項の燃料調節信号により，最低燃焼位置から最高
燃焼位置まで燃料弁 開度を変化させて，各ポイント毎
に排ガス中のＯ２，ＣＯ２，ＮＯｘまたはＣＯの単独又
は複数の計測に基づき空気ダンパ開度を最良の位置に設
定する（キー打 ち込みによる設定）手段（以后手段
（ｅ）と言う），（ｆ）前（ｅ）項の空気ダンパ開度パ
ーセントをデジタル表示する手段（以后手段 （ｆ）
と言う）。（ｈ）折線特性を調整する関数パターンのゲ
イン設定，燃料弁の制御特性の変更，折線の各設定ポイ
ント間の特性のリニアライズ化，負荷変動の応答特性の
変更を行なう手段（以后手段（ｈ）と言う），（ｋ）
自動運転，手動運転の選択切り替え手段（以后手段
（ｋ）と言う），を備えることを特徴とするバーナ用の
燃料と空気の比率調節器である。 This onset Akira [Summary of], in the combustion burner, receiving the input signal of the load fluctuation of the thermal equipment proportionally controls the opening output of the fuel valve controlling manipulation unit (control motor) Means and a means for controlling the opening output of the air damper control actuator (control motor) by means of a polygonal line characteristic in which an arbitrary function is programmed with a digital value. The regulator is (a) a boiler or Means for accepting any signal of current value, voltage value or resistance value of control signal of furnace pressure or temperature (usually 4 to 20 mA DC or 1 to 5 V DC or 0 to 135 Ω) (hereinafter, means (a)) (B) means for receiving one of the adjustment signals of the preceding (a) and outputting an opening output signal of the fuel valve and the air damper to adjust the flow rates of fuel and air (hereinafter referred to as means (b)). ), (C) Fuel valve, and And means for setting the opening of the starting point (zero adjustment) and the ending point (span adjustment) of the actuator (control motor) directly connected to each axis of the air damper, respectively (hereinafter referred to as means (c)), (D)
The means for digitally displaying the opening of the fuel valve and the air damper in the preceding (c) (hereinafter referred to as the means (d)), (e) the fuel adjustment signal in the previous (a), the lowest combustion position to the highest combustion position. Change the fuel valve opening up to and set the air damper opening to the best position based on single or multiple measurements of O 2 , CO 2 , NOx or CO in the exhaust gas for each point (keying Setting means) (hereinafter referred to as means (e)), (f) means for digitally displaying the air damper opening percentage in the previous (e) item (hereinafter referred to as means (f))
Say). (H) Means for setting the gain of the function pattern for adjusting the broken line characteristic, changing the control characteristic of the fuel valve, linearizing the characteristic between the set points of the broken line, and changing the response characteristic of the load fluctuation (the following means (h ) ), (K)
A burner characterized by comprising means for switching between automatic operation and manual operation (hereinafter referred to as means (k)).
It is a fuel / air ratio regulator.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】なお本発明の適用に際しては下記の如く実
施することがあり，本発明はそれらをも少なくとも含む
ものである。（イ）バーナの燃焼において，熱設備の負荷変動の入力
信号を受けて比例して燃料弁制御用操作器（コントロー
ルモータ）の開度出力を制御する手段と，任意の関数を
デジタル値でプログラムした折線特性によって空気ダン
パー制御用操作器（コントロールモータ）の開度出力を
制御する手段を持つ調節器であり，上記調 節器は，前記
（ａ），（ｂ），（ｃ），（ｄ），（ｅ），（ｆ），
（ｈ），（ｋ）の手段に加え，（ｇ）燃焼量が変化する
時，ハイ，ロー選択により，空気先行型の動作を行わ
せ，発煙を防止する手段，（ｉ）外部信号を受けて，プ
レパージの為の空気ダンパの強制開閉及び低燃焼位置点
火を行なわせる手段，（ｊ）燃料弁制御用，又は空気ダ
ンパ制御用操作器（コントロールモータ）がステック
（固着）を起したときに，それを検出して異常信号（警
報）を発する手段を備えることを特徴とするバーナ用の
燃料と空気の比率調節器。 （ロ）バーナの燃焼において，熱設備の負荷変動の入力
信号を受けて比例して燃料弁制御用操作器（コントロー
ルモータ）の開度出力を制御する手段と，任意の関数を
デジタル値でプログラムした折線特性によって空気ダン
パー制御用操作器（コントロールモータ）の開度出力を
制御する手段を持つ調節器であり，上記調節器は，前記
（ａ），（ｂ），（ｃ），（ｄ），（ｅ），（ｆ），
（ｇ），（ｈ），（ｉ），（ｊ），（ｋ）の手段に加
え，更に， （ｌ）低ＮＯｘバーナに於いて，燃焼用空気
に混ぜる燃焼排ガスの供給量を調節するダンパの制御を
行わしめる開度出力信号を発する手段，（以后手段
（１）と言う）を備えることを特徴とするバーナ用の燃
料と空気の比率調節器。 In applying the present invention , the following is performed.
However, the present invention includes at least these . (A) Input of load fluctuation of thermal equipment in burner combustion
In response to the signal, the fuel valve control actuator (control controller
(Le motor) means to control the opening output and an arbitrary function
An air damper is provided by the digitally programmed polygonal line characteristic.
The opening output of the actuator for control
A controller having a means for controlling, the regulatory unit, said (a), (b), (c), (d), (e), (f),
In addition to the means of (h) and (k), (g) the amount of combustion changes
When the high or low is selected, the air preceding operation is performed.
To prevent smoke, (i) receiving external signals,
Forced opening and closing of air damper and low combustion position point for repurge
Means for initiating fire, (j) fuel valve control, or air duct
Operation device for control of the computer (control motor) is a stick
When (sticking) occurs, it is detected and an abnormal signal (warning
For burners, characterized in that it is provided with means for issuing
Fuel to air ratio regulator. (B) Input of load fluctuation of thermal equipment in burner combustion
In response to the signal, the fuel valve control actuator (control controller
(Le motor) means to control the opening output and an arbitrary function
An air damper is provided by the digitally programmed polygonal line characteristic.
The opening output of the actuator for control
A regulator having means for controlling, wherein the regulator is
(A), (b), (c), (d), (e), (f),
Added to (g), (h), (i), (j), (k) means
In addition, (l) In a low NOx burner, means for issuing an opening degree output signal for controlling a damper for adjusting the supply amount of combustion exhaust gas mixed with combustion air (hereinafter referred to as means (1)). Burner fuel characterized by having
Charge and air ratio adjuster.
Claims (1)
動の入力信号を受けて比例して燃料弁制御用操作器（コ
ントロールモータ）の開度出力を制御する手段と，任意
の関数をデジタル値でプログラムした折線特性によって
空気ダンパー制御用操作器（コントロールモータ）の開
度出力を制御する手段を持つ調節器であり，上記調節器
は，（ａ）ボイラ又は炉の圧力，又は温度の調節信号の
電流値，電圧値又は抵抗値の何れの信号も受け入れられ
る手段，（ｂ）前（ａ）項の１つの調節信号を受けて燃
料弁と空気ダンパの開度出力信号を発し燃料と空気の流
量を調節する手段，（ｃ）燃料弁，及び空気ダンパの各
軸にそれぞれ直結した操作器（コントロールモータ）の
始点（ゼロ調整），終点（スパン調整）の開度を，それ
ぞれ設定する手段，（ｄ）前（ｃ）項の燃料弁及び空気
ダンパの開度をデジタル表示する手段，（ｅ）前（ａ）
項の燃料調節信号により，最低燃焼位置から最高燃焼位
置まで燃料弁開度を変化させて，各ポイント毎に排ガス
中のＯ２，ＣＯ２，ＮＯｘまたはＣＯの単独又は複数の
計測に基づき空気ダンパ開度を最良の位置に設定する
（キー打ち込みによる設定）手段，（ｆ）前（ｅ）項の
空気ダンパ開度パーセントをデジタル表示する手段，
（ｇ）燃焼量が変化する時，ハイ，ロー選択により，空
気先行型の動作を行わせ，発煙を防止する手段，（ｈ）
折線特性を調整する関数パターンのゲイン設定，燃料弁
の制御特性の変更，折線の各設定ポイント間の特性のリ
ニアライズ化，負荷変動の応答特性の変更を行なう手
段，（ｉ）外部信号を受けて，プレパージの為の空気ダ
ンパの強制開閉及び低燃焼位置点火を行なわせる手段，
（ｊ）燃料弁制御用，又は空気ダンパ制御用操作器（コ
ントロールモータ）がスティック（固着）を起したとき
に，それを検出して異常信号（警報）を発する手段，
（ｋ）自動運転，手動運転の選択切り替え手段，を備え
ることを特徴とするバーナ用の燃料と空気の比率調節
器。1. A means for controlling an opening output of a fuel valve control operating device (control motor) proportionally in response to an input signal of a load change of a thermal facility in combustion of a burner, and a digital value for an arbitrary function. Is a controller having means for controlling the opening output of the air damper control actuator (control motor) according to the polygonal line characteristics programmed in (1), which is (a) a boiler or furnace pressure or temperature control signal. Means for accepting any signal of current value, voltage value or resistance value of (b), (b) receiving one of the adjustment signals of (a) above, issuing an opening output signal of the fuel valve and the air damper to output the fuel and air. Means for adjusting the flow rate, (c) means for setting the opening of the starting point (zero adjustment) and the end point (span adjustment) of the actuator (control motor) directly connected to each axis of the fuel valve and air damper, respectively. (D) Means for digitally displaying the opening degrees of the fuel valve and the air damper in (c) above, (e) before (a)
By changing the fuel valve opening from the minimum combustion position to the maximum combustion position by the fuel adjustment signal of the item, the air damper is measured for each point based on the single or plural measurement of O 2 , CO 2 , NOx or CO in the exhaust gas. Means for setting the opening to the optimum position (setting by keying in), (f) means for digitally displaying the air damper opening percentage in the previous (e) item,
(G) A means for preventing smoke generation by performing an air-preceding operation by selecting high or low when the combustion amount changes, (h)
Gain setting of the function pattern for adjusting the broken line characteristic, change of the control characteristic of the fuel valve, linearization of the characteristic between each set point of the broken line, means for changing the response characteristic of load fluctuation, (i) receiving an external signal Means for performing forced opening / closing of the air damper for pre-purge and ignition at a low combustion position,
(J) Means for detecting an abnormal signal (alarm) when the operating device (control motor) for controlling the fuel valve or for controlling the air damper causes a stick (sticking),
(K) A fuel-air ratio adjuster for a burner, which is provided with a means for selectively switching between automatic operation and manual operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202880A JP2779460B2 (en) | 1992-06-20 | 1992-06-20 | Fuel / air ratio regulator for burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4202880A JP2779460B2 (en) | 1992-06-20 | 1992-06-20 | Fuel / air ratio regulator for burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0674441A true JPH0674441A (en) | 1994-03-15 |
| JP2779460B2 JP2779460B2 (en) | 1998-07-23 |
Family
ID=16464736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4202880A Expired - Fee Related JP2779460B2 (en) | 1992-06-20 | 1992-06-20 | Fuel / air ratio regulator for burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779460B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178685A (en) * | 2020-08-31 | 2021-01-05 | 武汉钢铁有限公司 | Combustion optimization control system of heating furnace |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011099594A (en) * | 2009-11-04 | 2011-05-19 | Sunray Reinetsu Co Ltd | Combustion device and combustion control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55744U (en) * | 1978-06-15 | 1980-01-07 | ||
| JPS5726322A (en) * | 1980-07-22 | 1982-02-12 | Toshiba Corp | Controlling system for concentration of oxygen in exhaust gas |
| JPS6195184A (en) * | 1984-10-13 | 1986-05-13 | 松下電工株式会社 | Exterior material structure for preventing dew condensation |
| JPS62140600A (en) * | 1985-12-13 | 1987-06-24 | Matsushita Electric Ind Co Ltd | Acoustic effect equipment |
| JPH0432610A (en) * | 1990-05-29 | 1992-02-04 | Toto Ltd | Method of controlling fuel flow pate regulating valve of hot water maker |
| JPH04165401A (en) * | 1990-10-29 | 1992-06-11 | Sekisui Chem Co Ltd | Abnormality detection controller for control valve |
-
1992
- 1992-06-20 JP JP4202880A patent/JP2779460B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55744U (en) * | 1978-06-15 | 1980-01-07 | ||
| JPS5726322A (en) * | 1980-07-22 | 1982-02-12 | Toshiba Corp | Controlling system for concentration of oxygen in exhaust gas |
| JPS6195184A (en) * | 1984-10-13 | 1986-05-13 | 松下電工株式会社 | Exterior material structure for preventing dew condensation |
| JPS62140600A (en) * | 1985-12-13 | 1987-06-24 | Matsushita Electric Ind Co Ltd | Acoustic effect equipment |
| JPH0432610A (en) * | 1990-05-29 | 1992-02-04 | Toto Ltd | Method of controlling fuel flow pate regulating valve of hot water maker |
| JPH04165401A (en) * | 1990-10-29 | 1992-06-11 | Sekisui Chem Co Ltd | Abnormality detection controller for control valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178685A (en) * | 2020-08-31 | 2021-01-05 | 武汉钢铁有限公司 | Combustion optimization control system of heating furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2779460B2 (en) | 1998-07-23 |
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