JPS5855615A - Control and apparatus for burner - Google Patents
Control and apparatus for burnerInfo
- Publication number
- JPS5855615A JPS5855615A JP56154387A JP15438781A JPS5855615A JP S5855615 A JPS5855615 A JP S5855615A JP 56154387 A JP56154387 A JP 56154387A JP 15438781 A JP15438781 A JP 15438781A JP S5855615 A JPS5855615 A JP S5855615A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- furnace
- burner
- detected
- fuel
- 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
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
-
- 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
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/16—Measuring temperature burner temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/16—Controlling secondary air
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)
- Control Of Combustion (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は加熱炉等におけるバーナの制御方法及び装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for controlling a burner in a heating furnace or the like.
従来の加熱炉における温度の制御装置としては、第１図
に示す如く、加熱炉（α）内を移動する金属材料（６）
を加熱するバーナ（６）の燃焼を、へ炉内温度を検出す
る温度検出器（ｄ）で検出した温度と、温度調節計（１
）に設定された温度との差に基づく出力信号によって調
節弁（７）を介し燃料流量を調節するととにより制御す
るようにしている。図中（＋７）は流量計、（五）は炉
尻を示す。As shown in Fig. 1, a conventional temperature control device in a heating furnace uses a metal material (6) moving inside the heating furnace (α).
The combustion of the burner (6) that heats the
) The fuel flow rate is controlled via the control valve (7) based on an output signal based on the difference between the temperature set in the control valve (7). In the figure, (+7) indicates the flow meter, and (5) indicates the furnace bottom.
しかし加熱炉（α）内の温度は、材料（６）の寸法及び
材料（６）の生産量（材料装入量）の変化により、第２
図に示す曲線（ｉ） （ｊ） （＆）のように変化する
ものであり、従って前記従来の如く、例えばバーナ（ｃ
）に近接する位置に設けた温度検出器（ｄ）の検出温度
にのみ基づいてバーナ（１）の燃焼を制御するようにし
たものにおいては、次に示す如き問題点を有していた。However, due to changes in the dimensions of material (6) and the production amount (material charging amount) of material (6), the temperature in the heating furnace (α)
It changes like the curves (i) (j) (&) shown in the figure, and therefore, as in the conventional case, for example, the burner (c
) in which the combustion of the burner (1) is controlled only based on the temperature detected by the temperature detector (d) provided in the vicinity of the burner (1) has the following problems.
（イ）炉内温度が第２図の曲線（ｊ）に設定されている
とき、曲線（ｊ）或いは（＆）の如く温度が変った場合
には必要以上に炉尻（Ａ）温度が高くなり、多大な燃料
消費の損失を来していた。(b) When the temperature inside the furnace is set to curve (j) in Figure 2, if the temperature changes as shown in curve (j) or (&), the temperature at the bottom of the furnace (A) may be higher than necessary. This resulted in a huge loss in fuel consumption.
（ロ） １つの制御帯の検出にのみ基づいているため、
炉内温度分布はなシゆきにまかせて変化することになり
、特に材料（ｂ）の低温加熱において曲線（ｋ）の如き
過熱を生じた場合、材料品質が低下して使用に耐えぬこ
とも生じていた。(b) Since it is based only on the detection of one control band,
The temperature distribution inside the furnace changes at will, and especially if overheating as shown in curve (k) occurs during low-temperature heating of material (b), the material quality may deteriorate and become unusable. was occurring.
（ハ）上記の悪化条件を防止するために、熟練した作業
員がバーナ（１）を手動調整することも多く行われてい
るが、保守に人手を多く必要としていた。(c) In order to prevent the above deteriorating conditions, skilled workers often manually adjust the burner (1), but this requires a lot of manpower for maintenance.
に）炉尻（Ａ）付近の温度が高くなり、炉体がらの放熱
による熱損失も増大していた。B) The temperature near the bottom of the furnace (A) increased, and heat loss due to heat radiation from the furnace body also increased.
本発明は、上記従来のもののもつ問題点を解決すべくな
したもので、バーナの火炎噴出方向と同軸上における複
数個所において温度を検出し、その検出温度を予め設定
した温度パターンと比較し、その温度差に応じて前記バ
ーナの火炎長さを調整してバーナの温度パターンを制御
することを特徴とする。バーナの制御方法、及びその装
置に係るものである。The present invention was made in order to solve the problems of the above-mentioned conventional methods, and detects temperatures at multiple locations coaxially with the flame jet direction of the burner, compares the detected temperatures with a preset temperature pattern, The present invention is characterized in that the flame length of the burner is adjusted according to the temperature difference to control the temperature pattern of the burner. The present invention relates to a burner control method and apparatus.
以下本発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
第３図は本発明の一例を示すもので、加熱炉（１）に設
けたバーナ（２）の火炎噴出方向と同一軸上に、適宜の
間隔を有して複数個の温度検出器（６）（４） （５）
を設ける。該３個所に設けた温度検出器（３）（４）
（５）の設置位置は、例えば、（３）は加熱炉（１）の
バーナ（２）取付部（６）の内壁から１ ｙｒ５以内程
度の位置とし、（５）はバーナ（２）の火炎長さく約１
．５〜８濯程度）＋１ｍ以内の位置とし、（４）は前記
（３）と（５）の中間部所要位置とする。FIG. 3 shows an example of the present invention, in which a plurality of temperature detectors (6 ) (4) (5)
will be established. Temperature detectors installed at the three locations (3) (4)
The installation position of (5) is, for example, within 1 yr from the inner wall of the burner (2) mounting part (6) of the heating furnace (1), and (5) is the position where the flame of the burner (2) is located. Approximately 1 long
．． (about 5 to 8 washes) + 1 m, and (4) is the required position between (3) and (5) above.
更に、前記温度検出器（３） （４） （５）に接続す
る比較器（７）を設け、該比較器（７）からの基準温度
信号（８）を導入する温度調節計（９）を設け、該温度
調節計（９）からの信号（１０〕によりプロワ（１１）
からの空気管を分岐した一次空気管（１２）に設けてな
る一次空気調整弁（１３）の開度制御を行う一次空気流
量制御装置（１４）を設け、更に前記温度調節計（９）
からの信号（１５）により燃料管（１６）に設けた燃料
調整弁（１７）の開度制御を行う燃料制御装置（１８）
を設け、温度制御回路を構成する。Furthermore, a comparator (7) connected to the temperature detectors (3), (4), and (5) is provided, and a temperature controller (9) is provided to introduce a reference temperature signal (8) from the comparator (7). The blower (11) is activated by the signal (10) from the temperature controller (9).
A primary air flow rate control device (14) is provided for controlling the opening degree of a primary air regulating valve (13) provided in a primary air pipe (12) which is a branched air pipe from the air pipe, and the temperature controller (9)
A fuel control device (18) that controls the opening of a fuel regulating valve (17) provided in a fuel pipe (16) based on a signal (15) from the fuel pipe (16).
is provided to configure a temperature control circuit.
また、前記比較器（７）からの温度差記号（１９）を導
入して前記−次空気流量制御装置（１４）に信号（２０
）を送ると共に、分岐された二次空気管（２１）に設け
てなる二次空気調整弁（２２）に信号（２３）を送って
その開度調整を行う比率設定器（２４）を設け、前記空
気調整弁（１３） （２２）を相対的に調整作動して炉
内の温度パターンを変える温度パターン制御回路を構成
する。Further, a temperature difference symbol (19) from the comparator (7) is introduced to send a signal (20) to the secondary air flow rate control device (14).
) and also sends a signal (23) to a secondary air adjustment valve (22) provided in a branched secondary air pipe (21) to adjust its opening degree. A temperature pattern control circuit is configured to relatively adjust the air adjustment valves (13) and (22) to change the temperature pattern in the furnace.
前記バーナ（２）は、第５．６図に示す如く、前記燃料
管（１６）に接続した燃料吹出口（２５） 、及び該燃
料吹出口（２５）を包囲し前記−次空気管（１２）に接
続した一次空気口（２６） 、並びに該−次空気口（２
６）の更に外側に設けて前記二次空気管（２１）に接続
した二次空気口（２７）を設けており、前記−次空気口
（２６）と二次空気口（２７）からの空気の吹出し量を
変えることにより火炎の長さを変えることができるよう
になっている。なお（２８）は炉尻、（２９）は金属材
料を示す。As shown in Figure 5.6, the burner (2) has a fuel outlet (25) connected to the fuel pipe (16), and a secondary air pipe (12) surrounding the fuel outlet (25). ), and the primary air port (26) connected to the
A secondary air port (27) is provided further outside of the secondary air pipe (21) and connected to the secondary air pipe (21), and air from the secondary air port (26) and the secondary air port (27) is provided. The length of the flame can be changed by changing the amount of air blown out. Note that (28) indicates the bottom of the furnace, and (29) indicates the metal material.
次に作用を説明する。Next, the effect will be explained.
炉尻（２８）側から加熱炉（１）内に装入された金属材
料（２９）は、第３図中矢印で示す如く移動されながら
バーナ（２）により目的温度に加熱される。The metal material (29) charged into the heating furnace (1) from the furnace bottom (28) side is heated to a target temperature by the burner (2) while being moved as shown by the arrow in FIG.
このとき、材料（２９）は炉尻（２８）に近い（装入側
）はど低いため、炉内温度は一般に第４図の曲線（５Ｑ
） （燃料消費量が最小になるよう設定された温度曲線
）のように想定されている。At this time, the temperature in the furnace is generally the curve (5Q
) (temperature curve set to minimize fuel consumption).
上記炉内温度は温度検出器（３） （４） （５）で検
出され比較器（７）に投入される。比較器（７）におい
て、例えば温度検出器（４）の検出温度が基準温度信号
（８）として温度調節計（９）に導かれ、該温度調節計
（９）に設定された設定温度との差による出力信号（１
０）及び（１５）が−次空気流量制御装置（１４）及び
燃料制御装置（１８）に夫々入力され、−次空気調整弁
（１２）及び燃料調整弁（１７）が調整されて炉内温度
が自動制御される。The temperature inside the furnace is detected by temperature detectors (3), (4), and (5) and input to a comparator (7). In the comparator (7), for example, the temperature detected by the temperature detector (4) is guided to the temperature controller (9) as a reference temperature signal (8), and the temperature is compared with the set temperature set on the temperature controller (9). Output signal due to difference (1
0) and (15) are input to the secondary air flow rate control device (14) and fuel control device (18), respectively, and the secondary air regulating valve (12) and fuel regulating valve (17) are adjusted to adjust the furnace temperature. is automatically controlled.
また、前記温度検出器（３） （４） （５）からの出
力信号が比較器（７）において、第４図に示すような設
定温度パターン（３０）と比較される。前記温度検出器
（３） （５）の検出温度を夫々■、■とじた場合、設
定温度パターン（３０）は■−■＝Δｔｏとなる。従っ
て、もし実際の温度パターンが（３０’）の如くなると
、Δｔ１の温度差が生じる。この温度差は、温度差信号
（１９）として比率設定器（２４）に導入され、これに
より二次空気調整弁（２２）の開度が増加するよう制御
される。更に、二次空気量が増大することにより、前記
バーナ（２）の機能によって火炎長さが短かくなり、よ
って炉尻（２８）側の温度が低下してバター７ （３０
’）が（３０）に近付くように制御される。このように
燃料及び空気の供給量を変えることなく、−次と二次の
空気流量の割合を変えてバーナ（２）の火炎長さを調整
することにより炉内の温度パターンを任意に制御するこ
とができる。Further, the output signals from the temperature detectors (3), (4), and (5) are compared with a set temperature pattern (30) as shown in FIG. 4 in a comparator (7). When the detected temperatures of the temperature detectors (3) and (5) are respectively divided by (1) and (2), the set temperature pattern (30) becomes (2) - (3) = Δto. Therefore, if the actual temperature pattern becomes like (30'), a temperature difference of Δt1 will occur. This temperature difference is introduced into the ratio setter (24) as a temperature difference signal (19), thereby controlling the opening degree of the secondary air regulating valve (22) to increase. Furthermore, due to the increase in the amount of secondary air, the flame length is shortened by the function of the burner (2), and the temperature at the bottom of the furnace (28) is lowered to reduce the butter 7 (30
') is controlled so that it approaches (30). In this way, the temperature pattern in the furnace can be arbitrarily controlled by adjusting the flame length of the burner (2) by changing the ratio of the secondary and secondary air flow rates without changing the amount of fuel and air supplied. be able to.
丑た前記した考えは熱処理炉の如くサイドバーナを備え
た装置などにおけるバーナにも適用することができるも
のであり、この場合炉幅方向の温度パターンの均一化が
可能である。The above-mentioned idea can also be applied to a burner in an apparatus equipped with a side burner such as a heat treatment furnace, and in this case, it is possible to make the temperature pattern uniform in the width direction of the furnace.
同、上記実施例においてはバーナに供給する空気を一次
、二次の二系統に分けて調整することにより炉内温度バ
クーンの制御を行うようにした場合について例示したが
、ガス等の燃料流量を二系統に分けて調整することによ
り同様に炉内温度パターンを変えるようにしたり、また
空気と燃料の両方を二系統として同様に作用させること
もできること、バーナには種々の形式のものを採用し得
ること、温度検出器の設置数は２個以上であれば良くそ
の設置位置も種々変更し得ること、その他事発明の要旨
を逸脱しない範囲内において種々変更を加え得ること、
等は勿論である。Similarly, in the above embodiment, the furnace temperature was controlled by adjusting the air supplied to the burner by dividing it into two systems, primary and secondary, but the flow rate of fuel such as gas was By adjusting the two systems separately, the temperature pattern inside the furnace can be changed in the same way, or both air and fuel can be operated in the same way as two systems, and various types of burners are used. The number of temperature detectors installed may be two or more, and the installation positions thereof can be changed in various ways, and various other changes can be made without departing from the gist of the invention.
Of course, etc.
上述したように、本発明によれば、炉内温度制御とは別
にバーナの火炎噴出方向延長上の温度パターンを制御す
るようにしてｂるので、下記の如き優ｎた効果を奏し得
る。As described above, according to the present invention, the temperature pattern in the extension direction of the flame from the burner is controlled separately from the furnace temperature control, so that the following excellent effects can be achieved.
（１）加熱炉等において、被加熱材料の寸法の変化、生
産量の変化等が生じても、常に炉内温度を設定温度パタ
ーンに近付くように制御することができ、従って炉内温
度の変化を減少させて炉効率の向上を図ることができる
。(1) In a heating furnace, etc., even if there is a change in the dimensions of the material to be heated or a change in production volume, the temperature inside the furnace can always be controlled so that it approaches the set temperature pattern, and therefore the temperature inside the furnace can change. It is possible to improve the furnace efficiency by reducing the
（１１）炉尻側の熱負荷（被加熱材料）が減少しても、
バーナの火炎長さを短かくして炉内温度パターンの変化
を小さくできるようにしているので、被加熱材料の過熱
を防止することができ、低温加熱材料の歩留りの向上、
品質の向上が図れる。(11) Even if the heat load (heated material) on the bottom side of the furnace decreases,
The burner flame length is shortened to minimize changes in the temperature pattern inside the furnace, which prevents overheating of the heated material and improves the yield of low-temperature heating materials.
Quality can be improved.
（ｉｉｉ） 炉内温度バター７変化の減少により、炉
体からの熱損失の減少を図り得る。(iii) By reducing the change in temperature inside the furnace 7, it is possible to reduce heat loss from the furnace body.
４ｖ） 炉内温度変化の減少により、バーナの燃料消
費量の減少を図り得られ、経済的に優れた炉を提供でき
る。4v) By reducing the temperature change inside the furnace, the fuel consumption of the burner can be reduced, and an economically superior furnace can be provided.
（■）熱処理炉等のサイドバーナに使用することにより
、炉幅方向の温度パターンを均一安定化することができ
る。(■) By using it in a side burner of a heat treatment furnace, etc., the temperature pattern in the width direction of the furnace can be made uniform and stable.
（Ｖｌ） 種々の炉のバーナに容易に実施が可能であ
る。(Vl) Can be easily implemented in burners of various furnaces.
第１図は従来の加熱炉の制御装置の説明図、第２図は第
１図の炉内温度の説明図、第６図は本発明における装置
の一実施例を示す説明図、第４図は第６図の炉内温度の
説明図、第５図は本発明におけるバーナの一例を示す切
断側面図、第６図は第５図のＶｌ−ｖ＋矢視図である。
（１）は加熱炉、（２）はバーナ、（３） （４） （
５）は温度検出器、（７）は比較器、（８）は基準温度
信号、（１２）は−欠字気管、（１４）は−欠字気制御
装置、（１６）は燃料管、（１８）は燃料制御装置、（
１９）は温度差信号、（２１）は二次空気管、（２４）
は比率設定器、（２５）は燃料吹出口、（２６）は−欠
字気口、（２７）は二次空気口を示す。
特許出願人
石川島播磨重工業株式会社
１輿附坐１
第１図
２８ ５４３ −炉内位置ミ郭
７
５FIG. 1 is an explanatory diagram of a conventional heating furnace control device, FIG. 2 is an explanatory diagram of the furnace temperature in FIG. 1, FIG. 6 is an explanatory diagram showing an embodiment of the apparatus according to the present invention, and FIG. 6 is an explanatory diagram of the furnace temperature in FIG. 6, FIG. 5 is a cutaway side view showing an example of the burner in the present invention, and FIG. 6 is a view taken along the Vl-v+ arrow in FIG. (1) is a heating furnace, (2) is a burner, (3) (4) (
5) is a temperature detector, (7) is a comparator, (8) is a reference temperature signal, (12) is a missing trachea, (14) is a missing air controller, (16) is a fuel pipe, ( 18) is a fuel control device, (
19) is the temperature difference signal, (21) is the secondary air pipe, (24)
(25) is a fuel outlet, (26) is a blank air port, and (27) is a secondary air port. Patent applicant Ishikawajima-Harima Heavy Industries Co., Ltd. 1 Figure 1 28 543 - Location inside the furnace 7 5
Claims (1)
おいて温度を検出し、そ゛の検出温度を予め設定した温
度パターンと比較し、その温度差に応じて前記バーナの
火炎長さを調整してバーナの温度パターンを制御するこ
とを特徴とするバーナの制御方法。 ２）燃料と空気の少なくとも一方を二系統供給として該
系統における流量の分配調整により火炎長さを調整可能
としたバーナを設け、且つ該バーナの火炎噴出方向と同
軸上に所要の間隔を有して複数個の温度検出器を設け、
更に該各温度検出器の検出温度を設定温度パターンと比
較する比較器を設け、該比較器からの温度差信号に応じ
て前記二系統における流量の分配調整を行う比率設定器
を設けたことを特徴とするバーナの制御装置。[Claims] 1) Detect temperatures at multiple locations coaxially with the direction of flame ejection of the burner, compare the detected temperatures with a preset temperature pattern, and adjust the flame length of the burner according to the temperature difference. A method for controlling a burner, characterized in that the temperature pattern of the burner is controlled by adjusting the temperature. 2) A burner is provided that supplies at least one of fuel and air to two systems and whose flame length can be adjusted by adjusting the flow rate distribution in the system, and has a required spacing coaxially with the flame ejection direction of the burner. multiple temperature detectors are installed,
Further, a comparator is provided to compare the detected temperature of each temperature detector with a set temperature pattern, and a ratio setter is provided to adjust the distribution of the flow rate in the two systems according to the temperature difference signal from the comparator. Features: Burner control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56154387A JPS5855615A (en) | 1981-09-29 | 1981-09-29 | Control and apparatus for burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56154387A JPS5855615A (en) | 1981-09-29 | 1981-09-29 | Control and apparatus for burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5855615A true JPS5855615A (en) | 1983-04-02 |
Family
ID=15583016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56154387A Pending JPS5855615A (en) | 1981-09-29 | 1981-09-29 | Control and apparatus for burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020041723A (en) * | 2018-09-07 | 2020-03-19 | 東邦瓦斯株式会社 | Burner |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4896407A (en) * | 1972-03-24 | 1973-12-10 | ||
| JPS5271737A (en) * | 1975-12-11 | 1977-06-15 | Daido Steel Co Ltd | Burner |
| JPS5318825A (en) * | 1976-08-04 | 1978-02-21 | Kawasaki Steel Corp | Combustion control method for gas fuel in industrial furnace |
| JPS54129536A (en) * | 1978-03-31 | 1979-10-08 | Sumitomo Metal Ind Ltd | Variable flame langth burner |
| JPS5538922A (en) * | 1978-09-08 | 1980-03-18 | Hitachi Ltd | Heating furnace controlling method |
| JPS5675531A (en) * | 1979-11-26 | 1981-06-22 | Nippon Kokan Kk <Nkk> | Temperature controlling method in heating furnace |
-
1981
- 1981-09-29 JP JP56154387A patent/JPS5855615A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4896407A (en) * | 1972-03-24 | 1973-12-10 | ||
| JPS5271737A (en) * | 1975-12-11 | 1977-06-15 | Daido Steel Co Ltd | Burner |
| JPS5318825A (en) * | 1976-08-04 | 1978-02-21 | Kawasaki Steel Corp | Combustion control method for gas fuel in industrial furnace |
| JPS54129536A (en) * | 1978-03-31 | 1979-10-08 | Sumitomo Metal Ind Ltd | Variable flame langth burner |
| JPS5538922A (en) * | 1978-09-08 | 1980-03-18 | Hitachi Ltd | Heating furnace controlling method |
| JPS5675531A (en) * | 1979-11-26 | 1981-06-22 | Nippon Kokan Kk <Nkk> | Temperature controlling method in heating furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020041723A (en) * | 2018-09-07 | 2020-03-19 | 東邦瓦斯株式会社 | Burner |
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