JPS62237218A - Constant proportional control device for burner - Google Patents

Constant proportional control device for burner

Info

Publication number
JPS62237218A
JPS62237218A JP61078790A JP7879086A JPS62237218A JP S62237218 A JPS62237218 A JP S62237218A JP 61078790 A JP61078790 A JP 61078790A JP 7879086 A JP7879086 A JP 7879086A JP S62237218 A JPS62237218 A JP S62237218A
Authority
JP
Japan
Prior art keywords
burner
arm
inverter
control valve
flow rate
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
JP61078790A
Other languages
Japanese (ja)
Inventor
Shigeru Matsunaga
茂 松永
Kazuaki Okado
岡戸 一晃
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.)
Shinwa Co Ltd
Original Assignee
Shinwa Co 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 Shinwa Co Ltd filed Critical Shinwa Co Ltd
Priority to JP61078790A priority Critical patent/JPS62237218A/en
Publication of JPS62237218A publication Critical patent/JPS62237218A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N1/00Regulating fuel supply
    • F23N1/02Regulating fuel supply conjointly with air supply
    • F23N1/027Regulating fuel supply conjointly with air supply using mechanical means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00Ventilators
    • F23N2233/06Ventilators at the air intake
    • F23N2233/08Ventilators at the air intake with variable speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00Valves, nozzles or pumps
    • F23N2235/02Air or combustion gas valves or dampers
    • F23N2235/06Air or combustion gas valves or dampers at the air intake
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/18Systems 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)

Abstract

PURPOSE:To cause a burner to always effect safe combustion in a specified air ratio irrespective of a fluctuation in a load, by a method wherein an inverter-system number of revolutions controller is connected to a blower, and a variable resistor for controlling an inverter and a flow rate control valve for controlling an amount of fuel fed to a burner are actuated in linkage with each other. CONSTITUTION:An arm 11 is located in a protruding manner on an input shaft 10 of a flow rate control valve 4, and a variable resistor 9 for controlling an inverter is connected to the one end of an output shaft 12 of a control motor 7. An arm 13 is situated in a protruding manner to the other end of the output shaft 12, and the arm 11 is mechanically connected to the arm 13 through a link 14. With the output shaft 12 of the control motor 7 rotated, the flow rate control valve 4 is also rotated in linkage with the output shaft through the link 14. Changing the attaching position of the link 14 to the arm 11 to regulate a device according to characteristics and using purpose cause a burner to effect combustion in a specified air ratio irrespective of a fluctuation in the load of the burner.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はボイラーや各種の工業用炉等のバーナーをその
負荷の変v1にかかわらず一定の空気比で、@焼させる
ために用いられるバーナーの定比例制御装置に関するも
のである。
Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a burner used for burning a burner such as a boiler or various industrial furnaces at a constant air ratio regardless of changes in the load v1. This invention relates to a constant proportional control device.

(従来の技術) ボイラーや各種の工業用炉等においては、省エネルギー
の見地からそのバーナーを負荷の変動にかかわらず一定
の空気比で燃焼させることが求められており、このため
に従来から燃料供給弁の開度に合わせて送風機の吐出側
のダンパーを開閉する自動制御装置や、炉内の酸素濃度
を酸素センサーで検出して酸素濃度が一定となるように
空気量を制御する自動制御装置等が用いられている。と
ころがダンパーによる風量制御においてはダンパーの開
度と風量とが比例しないので、燃料供給弁の開度に連動
させてダンパーを制御してもバーナーの空気比を一定に
保つことは困難であり、このため安全性を値、保するた
めに空気比を理想値よりもやや太き目に設定して燃焼を
行わざるを得なかった。また酸素センサーによる制御は
計装に多額の費用がかかるうえ安全に使用するには高度
の制御技術が必要とされ、更に燃焼ガス中の酸素濃度を
検出してバーナーの制御を行うので不可避的に制御遅れ
が生ずる等の欠点があった。
(Prior art) Boilers and various industrial furnaces, etc., are required to burn at a constant air ratio regardless of load fluctuations in order to save energy. An automatic control device that opens and closes a damper on the discharge side of a blower according to the valve opening, an automatic control device that detects the oxygen concentration in the furnace with an oxygen sensor and controls the amount of air so that the oxygen concentration is constant, etc. is used. However, when controlling air volume using a damper, the opening degree of the damper is not proportional to the air volume, so it is difficult to keep the burner air ratio constant even if the damper is controlled in conjunction with the opening degree of the fuel supply valve. Therefore, in order to maintain safety, it was necessary to set the air ratio slightly higher than the ideal value for combustion. In addition, control using oxygen sensors requires a large amount of equipment, requires advanced control technology to use safely, and is unavoidable because the burner is controlled by detecting the oxygen concentration in the combustion gas. There were drawbacks such as control delays.

(発明が解決しようとする問題点) 本発明は上記のような従来の問題点を解決して、高価な
設備や高度の制御技術を必要とすることなく、バーナー
を負荷の変動にかかわらず常に一定の空気比で安全に燃
焼させることができるバーナーの定比例制御装置を目的
として完成されたものである。
(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and allows the burner to be constantly operated regardless of load fluctuations without requiring expensive equipment or advanced control technology. It was completed with the aim of creating a constant proportional control device for burners that can safely perform combustion at a constant air ratio.

(問題点を解決するための手段) 本発明はバーナーに燃焼用空気を送る送風機にインバー
タ方式による回転数制御器を接続し、そのインバータ制
御用可変抵抗器とバーナーへの燃料供給量を制御する流
量制御弁とを機械的手段により連動させたことを特徴と
するものである。
(Means for Solving the Problems) The present invention connects an inverter-based rotation speed controller to a blower that sends combustion air to a burner, and controls a variable resistor for controlling the inverter and the amount of fuel supplied to the burner. This is characterized in that the flow rate control valve is interlocked with the flow rate control valve by mechanical means.

(実施例) 次に本発明を図示の実施例について詳細に説明すると、
第1図において(1)はボイラー、(2)は該ボイラー
(11に設けられた重油燃焼式のバーナー、(3)はバ
ーナー(2)へ燃焼用空気を送るための送風機、(4)
はバーナー(2)へ供給される重油等の燃料の供給量を
制御する流量制御弁である。また(5)はボイラー(1
)内の蒸気圧を測定する圧力計、(6)は該圧力計(5
)によって測定された圧力に応じてバーナー(2)の燃
焼を制御するための圧力調節器、(7)は圧力調節器(
6)からの信号に応じて流量制御弁(4)等を動かすコ
ントロールモーターである。バーナー(2)に燃焼用空
気を送るための送風機(3)にはインバータ方式による
回転数制御器(8)が接続され、回転数制御を行うこと
によりバーナー(2)への燃焼用空気供給量が調節され
るが、本発明においては回転数制御器(8)のインバー
タ制御用可変ta抵抗器(9)と前述した流量制御弁(
4)とが機械的に連結されて圧力調節器(6)のコント
ロールモーター(7)によって同時に駆動されるように
構成されている。
(Example) Next, the present invention will be explained in detail with reference to the illustrated example.
In Fig. 1, (1) is a boiler, (2) is a heavy oil combustion type burner installed in the boiler (11), (3) is a blower for sending combustion air to the burner (2), (4)
is a flow control valve that controls the amount of fuel such as heavy oil supplied to the burner (2). Also, (5) is the boiler (1
), (6) is a pressure gauge that measures the vapor pressure in the pressure gauge (5).
), a pressure regulator (7) for controlling the combustion of the burner (2) according to the pressure measured by the pressure regulator (
6) is a control motor that operates the flow rate control valve (4), etc. in response to signals from the control valve (4). An inverter-based rotation speed controller (8) is connected to the blower (3) for sending combustion air to the burner (2), and by controlling the rotation speed, the amount of combustion air supplied to the burner (2) is controlled. However, in the present invention, the variable ta resistor (9) for controlling the inverter of the rotation speed controller (8) and the above-mentioned flow rate control valve (
4) are mechanically connected and simultaneously driven by the control motor (7) of the pressure regulator (6).

この点を第2図及び第3図によって更に詳述すると、流
量制御弁(4)の入力軸OIにはアーム(11)が突設
されており、一方、コントロールモーター(7)の出力
軸(12)の一端にはカップリング(13)を介してイ
ンバータ制御用可変換抵抗器(9)が接続されるととも
に該出力軸(12)の他端にはアーム(13)が突設さ
れ、これらのアーム(11)とアーム(13)とをリン
ク(14)を介して機械的に接続している。そこでコン
トロールモーター(7)の出力軸(12)が回転すると
リンク(14)を介して流量制御弁(4)も連動して回
転されることとなり、アーム(工1)へのリンク(14
)の取付位置等を変更すれば出力軸(12)の回転角度
と流量制御弁(4)の入力軸αωの回転角度との関係を
自由に変更することも可能となる。なお、本実施例では
リンク(14)を介して両者を連結させたが、チェーン
、タイミングベルト等々の任意の機械的な連結手段を用
いることもできることは言うまでもない。
To explain this point in more detail with reference to FIGS. 2 and 3, an arm (11) is provided protruding from the input shaft OI of the flow rate control valve (4), while an output shaft (OI) of the control motor (7) A convertible resistor (9) for inverter control is connected to one end of the output shaft (12) via a coupling (13), and an arm (13) is protruded from the other end of the output shaft (12). The arm (11) and the arm (13) are mechanically connected via a link (14). Therefore, when the output shaft (12) of the control motor (7) rotates, the flow control valve (4) is also rotated in conjunction with the link (14), and the link (14) to the arm (work 1) is rotated.
), it becomes possible to freely change the relationship between the rotation angle of the output shaft (12) and the rotation angle of the input shaft αω of the flow control valve (4). In this embodiment, the two are connected via a link (14), but it goes without saying that any mechanical connection means such as a chain, a timing belt, etc. can be used.

(作用) このように構成されたものは、圧力計(5)によってボ
イラー(1)等の内部の圧力を検出し、圧力調節器(6
)により設定圧力値と比較しつつコントロールモーター
(7)によりバーナーfilへの燃焼用空気供給量と重
油等の燃料供給量を制御してバーナーfl)の燃焼制御
を行うことは従来のこの種の制御装置と同様である。し
かし本発明においてはインバータ制御用可変換抵抗器(
9)と流量制御弁(4)とが機械的手段により連結され
ているため、コントロールモーター(7)が流量制御弁
(4)をある開度に調節するとこれに連動してインバー
タ制御用可変換抵抗H(9)が同時に回転して送風a(
3)の回転数はインバータ方式による回転数制御器によ
って流量制御弁(4)の開度に応じた値に確実制御され
、これに伴なって送風績も増減される。このとき、流量
制御弁(4)とインバータ制御用可変換抵抗器(9)と
をどのような比率で連動させるかはリンク(14)等の
調節によって機械的に自由に設定することができるので
、予め機器の特性や使用目的に合わせて調整を行えばそ
の後はバーナー(1)の負荷の変動にかかわらず送風機
(3)からバーナーfi+へ送られる燃焼用空気量を常
に最適に制御して一定空気比の燃焼を行わせることがで
きる。
(Function) The device configured in this way detects the internal pressure of the boiler (1) etc. with the pressure gauge (5), and detects the pressure inside the boiler (1) etc. with the pressure gauge (5).
Conventionally, this type of combustion control is performed by controlling the amount of combustion air supplied to the burner fil and the amount of fuel such as heavy oil supplied to the burner fil with the control motor (7) while comparing the set pressure value with the set pressure value. It is similar to the control device. However, in the present invention, a convertible resistor for inverter control (
9) and the flow rate control valve (4) are connected by mechanical means, so when the control motor (7) adjusts the flow rate control valve (4) to a certain opening degree, the control motor (7) adjusts the opening degree of the flow rate control valve (4) to a certain degree. Resistor H (9) rotates at the same time to blow air a (
The rotation speed (3) is reliably controlled by an inverter-based rotation speed controller to a value corresponding to the opening degree of the flow rate control valve (4), and the air blow rate is also increased or decreased accordingly. At this time, the ratio at which the flow rate control valve (4) and the convertible resistor for inverter control (9) are linked can be freely set mechanically by adjusting the link (14), etc. If you make adjustments in advance according to the characteristics of the equipment and the purpose of use, the amount of combustion air sent from the blower (3) to the burner fi+ will always be optimally controlled and constant regardless of changes in the load on the burner (1). It is possible to perform air-to-air ratio combustion.

このように本発明によれば燃料供給量と燃焼用空気の供
給計とを同時に、かつ確実に制御できるので、従来のダ
ンパー制御のように安全を見込んで過剰の空気比でバー
ナー(11を燃焼させる必要がなくなり、理想的な空気
比に近い条件でバーナー(1)を安全に燃焼させること
ができ、省エネルギー上極めて有利である。
In this way, according to the present invention, the fuel supply amount and the combustion air supply meter can be controlled simultaneously and reliably, so that the burner (11 The burner (1) can burn safely under conditions close to the ideal air ratio, which is extremely advantageous in terms of energy saving.

本発明の制御装置を実働中のボイラーに取付けて試験し
たところ、従来のダンパー制御方式による場合は油量1
10  β/11、燃焼ガス中の酸素?;度9゜0%で
あった低燃焼を本発明によれば油fit105 j!/
1(、酸素濃度4.5%で行わせることができた。また
油量3/151)/H1酸素濃度6.0%であった高燃
焼を本発明によれば油ftt338 x/n、酸素濃度
3.5%で行わせることができ、約5%の大きい省エネ
ルギー効果が達成できることが確認された。なお本発明
においては、送風機(3)をインバータ方式により回転
数制御して送風量を変えるようにしたので従来のダンパ
ー制御方式よりも電力のロスが少ない利点がある。また
酸素センサーによる制御のように高価な設備を必要とし
ないうえ、一旦制御機器をセットすればその後は高度の
制御技術は不要であり、更にまた燃料供給量と燃焼用空
気の供給量とが同時に制御されるので応答の時間遅れを
生ずることもない利点もある。
When the control device of the present invention was installed on a boiler in operation and tested, it was found that when using the conventional damper control method, the oil amount was 1.
10 β/11, oxygen in combustion gas? According to the present invention, oil fit105 j! has low combustion of 9°0%. /
According to the present invention, high combustion can be achieved with oil ftt338 It was confirmed that this can be done at a concentration of 3.5% and a large energy saving effect of about 5% can be achieved. In addition, in the present invention, since the number of revolutions of the blower (3) is controlled by an inverter system to change the amount of air blown, there is an advantage that there is less power loss than the conventional damper control system. In addition, it does not require expensive equipment like oxygen sensor control, once the control equipment is set up, advanced control technology is not required, and furthermore, the amount of fuel supplied and the amount of combustion air supplied can be controlled at the same time. Since it is controlled, there is also the advantage that there is no response time delay.

(発明の効果) 本発明は以上の説明からも明らかなように、高価な設備
や高度の制御技術を必要とすることなく、ボイラーや工
業用炉等のバーナーを負荷の変動にかかわらず一定の空
気比で安全に燃焼させることができるものであり、従来
のように安全性を確保するために過剰の空気比に設定す
る必要もないので省エネルギー上からも極めて有利なも
のである。よって本発明は従来の問題点を解決したバー
ナーの定比例制?11 g置として、業界に寄与すると
ころは極めて大きいものである。
(Effects of the Invention) As is clear from the above description, the present invention enables burners such as boilers and industrial furnaces to be controlled at a constant level regardless of load fluctuations, without requiring expensive equipment or advanced control technology. It can be safely combusted at an air-to-air ratio, and there is no need to set an excessive air-to-air ratio to ensure safety, unlike conventional methods, so it is extremely advantageous from an energy-saving perspective. Therefore, is the present invention a fixed proportion system for burners that solves the conventional problems? 11G, the contribution to the industry is extremely large.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例を示すブロック図、第2図はそ
の要部の正面図、第3図はその平面図である。 (2):バーナー、(3):送風機、(4):流量制御
弁、(8):回転数制御器、(9):インバータ制御用
可変抵抗器。
FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a front view of its main parts, and FIG. 3 is a plan view thereof. (2): Burner, (3): Air blower, (4): Flow rate control valve, (8): Rotation speed controller, (9): Variable resistor for inverter control.

Claims (1)

【特許請求の範囲】[Claims] バーナー(2)に燃焼用空気を送る送風機(3)にイン
バータ方式による回転数制御器(8)を接続し、そのイ
ンバータ制御用可変抵抗器(9)とバーナー(2)への
燃料供給量を制御する流量制御弁(4)とを機械的手段
により連動させたことを特徴とするバーナーの定比例制
御装置。
An inverter-based rotation speed controller (8) is connected to the blower (3) that sends combustion air to the burner (2), and the variable resistor (9) for controlling the inverter controls the amount of fuel supplied to the burner (2). A constant proportional control device for a burner, characterized in that a flow rate control valve (4) to be controlled is interlocked by mechanical means.
JP61078790A 1986-04-05 1986-04-05 Constant proportional control device for burner Pending JPS62237218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61078790A JPS62237218A (en) 1986-04-05 1986-04-05 Constant proportional control device for burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61078790A JPS62237218A (en) 1986-04-05 1986-04-05 Constant proportional control device for burner

Publications (1)

Publication Number Publication Date
JPS62237218A true JPS62237218A (en) 1987-10-17

Family

ID=13671674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61078790A Pending JPS62237218A (en) 1986-04-05 1986-04-05 Constant proportional control device for burner

Country Status (1)

Country Link
JP (1) JPS62237218A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155112A (en) * 1979-05-22 1980-12-03 Westinghouse Electric Corp Combustion controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155112A (en) * 1979-05-22 1980-12-03 Westinghouse Electric Corp Combustion controller

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