JPS5845411A - Combustion control system - Google Patents
Combustion control systemInfo
- Publication number
- JPS5845411A JPS5845411A JP14351781A JP14351781A JPS5845411A JP S5845411 A JPS5845411 A JP S5845411A JP 14351781 A JP14351781 A JP 14351781A JP 14351781 A JP14351781 A JP 14351781A JP S5845411 A JPS5845411 A JP S5845411A
- Authority
- JP
- Japan
- Prior art keywords
- concentration
- air flow
- flow rate
- combustion
- ratio
- 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
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
- F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
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
Description
【発明の詳細な説明】 この発明は、２種以上の燃料を混焼する燃焼設。[Detailed description of the invention] This invention relates to a combustion system that co-combusts two or more types of fuel.
備Ｏ最適燃焼効率を与えるように制御する燃焼制御装置
に関する。The present invention relates to a combustion control device that performs control to provide optimum combustion efficiency.
第１図は従来の燃焼制御装置を示す系統図である。バー
ナ１、バーナ２にはそれぞれ異なる燃料（たとえば重油
とガス）が燃料流量計５と流量調節弁６および燃料流量
計７と流量調節弁８とを介して供給されている。また、
それぞれの燃料流量の調節は燃料流量調節計９，１０に
印加される。制御４５号に応じて流量調節弁６．８を制
御することにより行なわれる。燃料流量計５，７の検出
信号はそれでれ燃料流量調節計９．１０に印加されてい
る。バーナ１、バーナ２には空気１１が、それぞれ空気
流量計１２と空気流量調節弁１３および空気流量計１４
と空気流量調節弁１５とを介して供給されている。それ
ぞれの空気流量調節は、空気流量調節計１６ 、１７に
印加される制御信号に応じて流ｉｉ調節弁１３ 、１５
を制御することにより行なわれる。空気流量計１２ 、
１４の検出信号はそれぞれ空気流量調節計１６ 、１７
に印加され１ル箋る。FIG. 1 is a system diagram showing a conventional combustion control device. Different fuels (for example, heavy oil and gas) are supplied to the burners 1 and 2 via a fuel flow meter 5 and a flow control valve 6, and a fuel flow meter 7 and a flow control valve 8, respectively. Also,
The respective fuel flow adjustments are applied to fuel flow controllers 9,10. This is done by controlling the flow control valve 6.8 in accordance with control number 45. The detection signals of the fuel flow meters 5, 7 are then applied to a fuel flow regulator 9.10. Air 11 is supplied to burner 1 and burner 2, and air flow meter 12, air flow control valve 13, and air flow meter 14 are supplied to burner 1 and burner 2, respectively.
and an air flow control valve 15. Each air flow rate adjustment is performed by controlling the air flow control valves 13, 15 in response to control signals applied to the air flow controllers 16, 17.
This is done by controlling the Air flow meter 12,
14 detection signals are air flow rate controllers 16 and 17, respectively.
is applied to write 1 le.
バーナ１１バーナ２に流れる燃料流駿は、合Ｉｔ燃料指
令１８をある混焼比Ｒ，，Ｒ，に分配するために設けら
れた乗算器１８ 、１９からの信号に基づいて定めら五
る。（ここでＲｔ ＋Ｒｔ ＝ １ ）一方、燃料３，
４に対する空気＃Ｌｔの制御：よ空気流量演算器２０
、２１からの指令信号に基づいて行なわれる。空気流量
演算器２０ 、２１では燃料３，４に対する必要空気−
！Ｑ＋ 、Ｑｍを次式に従って葬出している。The fuel flow rate flowing into the burner 11 and the burner 2 is determined based on signals from multipliers 18 and 19 provided for distributing the total fuel command 18 to a certain co-firing ratio R, , R,. (Here, Rt + Rt = 1) On the other hand, fuel 3,
Control of air #Lt for 4: Air flow rate calculator 20
, 21 based on command signals. The air flow rate calculators 20 and 21 calculate the required air for the fuels 3 and 4.
! Q+ and Qm are buried according to the following formula.
ＱＩ ＝Ｆｔ ＸＡ＋ Ｘμｍ ・・・・・
・・・・・・（１）（ｂ ＝Ｆｍ ＸＡｍ Ｘμ、
・・・・・・・・・・・・（２）ここで！Ｉ ＱＩ
ａ Ｑｔは燃料３．４の必要空気旨、Ｆｌ＋Ｆ＊は燃
料３，４の流量、Ａ、、Ａ黛は燃料３，４の単位流ｌ・
あたりの理論空気量、μｍ。QI = Ft XA+ Xμm ・・・・・・
......(1) (b = Fm XAm Xμ,
・・・・・・・・・・・・(2) Here! I QI
a Qt is the air required for fuel 3.4, Fl+F* is the flow rate of fuel 3, 4, A,, A is the unit flow l of fuel 3, 4,
Theoretical air volume per unit, μm.
μｍは燃料３，４に対する空気過剰率である。μm is the excess air ratio with respect to fuels 3 and 4.
このような従来の燃焼制御装置においては、燃料３．４
の成分変化による理論空気１ｔＡｔ＋Ａｍの変動や、燃
料３，４や空気１１の流量測定糾差に基づく実際空燃比
の変動が予想されるため、その分だけ余裕を持った空気
過剰率で運転しなくてはことが出来ず、理想的低０．運
転が出来ないという欠点があった。In such a conventional combustion control device, fuel 3.4
It is expected that the theoretical air 1tAt+Am will fluctuate due to component changes, and the actual air-fuel ratio will fluctuate based on differences in flow rate measurements of fuels 3 and 4 and air 11, so do not operate at an excess air ratio with a margin for this. The ideal low 0. The disadvantage was that he could not drive.
この発明の目的は、混焼比や空気過剰率を任意に変更し
ても、自動的に彫遍の排ガスｏ８濃度を保持して最適燃
焼効率を維持することの出来る燃焼制御装置を提供する
にある。An object of the present invention is to provide a combustion control device that can automatically maintain the O8 concentration in the exhaust gas and maintain optimum combustion efficiency even if the mixed combustion ratio and excess air ratio are changed arbitrarily. .
この発明においては、排ガス中の０．濃度を検出するセ
／すをもうけ、このセンサからの信号が少なくとも１つ
の混焼比を用いて算出した０！濃度目標値に一致するよ
うに供給する空気流量を加減するようにして前記の目的
ｔ−達成した。In this invention, 0. A sensor is provided to detect the concentration, and the signal from this sensor is calculated using at least one co-firing ratio. The above objective t- was achieved by adjusting the supplied air flow rate to match the target concentration value.
以下、この発明の実施例を図面に基づいて詳細に説明す
る。Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第２図は、この発明の一実施例を示す燃焼制御装置の系
統図である。なお第１図と同一部分は同一符号を付し、
同一構成の部分は説明を省略する。FIG. 2 is a system diagram of a combustion control device showing one embodiment of the present invention. The same parts as in Fig. 1 are given the same reference numerals.
Descriptions of parts with the same configuration will be omitted.
２２ハ排ガスＣｔｌ）Ｏ，濃度を検出するためのセンサ
、詔は排ガス中の最適０．濃度を算出するＯ８練度目標
値演算器、消は０．濃度目標指令信号、２５は空気流量
の補正信号を発生するＯ１濃度調節計、２６ 、２７は
演算器である。22 C exhaust gas Ctl) O, a sensor for detecting the concentration, and a sensor for detecting the optimum 0. O8 training target value calculator that calculates concentration, zero is 0. 25 is an O1 concentration controller that generates a concentration target command signal, and 26 and 27 are computing units.
次に、この実施例の動作について説明する。Next, the operation of this embodiment will be explained.
最適燃焼′が行なわれた場合には、燃焼排がス中の０．
濃度Ａｏ１と過剰空気率μとの間にはほぼ次の関係式が
成立することが知られている。When optimum combustion is carried out, the combustion exhaust gas is 0.
It is known that the following relational expression approximately holds true between the concentration Ao1 and the excess air ratio μ.
ＡＯ冨 ＝２１（１−１／μ ） ・・・・
・・・・・・・（３）従がってＯ８濃度目標値演算器器
は、（３）式で示されるＡｏｌを算出し、この０．濃度
目標値演算器２３の出力信号である０１ａ度目標指令信
号２４と０、濃度検出センサ２２の出力信号が一致する
ようにＯ３濃１ｒ！！１節計５が空気流量補正信号を発
する。AO wealth = 21 (1-1/μ) ...
(3) Therefore, the O8 concentration target value calculator calculates Aol shown by equation (3), and uses this 0. O3 concentration 1r! so that the 01a degree target command signal 24 which is the output signal of the concentration target value calculator 23 and 0 and the output signal of the concentration detection sensor 22 match. ! The one-section meter 5 issues an air flow rate correction signal.
演算器２６ 、２７は空気流量演算器２０ 、２１のｇ
ｇ号に、上記した空気流量補正信号を混合して、空気流
量制御信号ア、２９を作り出す。本実施例においては演
算器２６ 、２７として乗算器を使用している。ここで
（３）式中に示される過剰空気率μは（１） 、 （２
）式で示されるＱｍ ａＱ＊ ＊Ｆｔ ｅＦ＊
ＩＡＩ ｅｋｅ ＸＡｍ、μｍと次のような関係
にある。Computing units 26 and 27 correspond to the g of air flow computing units 20 and 21.
The air flow rate control signal A, 29 is created by mixing the air flow rate correction signal described above with the signal No. g. In this embodiment, multipliers are used as the arithmetic units 26 and 27. Here, the excess air ratio μ shown in equation (3) is (1), (2
) Qm aQ* *Ft eF*
IAI eke XAm has the following relationship with μm.
Ｑｚ ＋ Ｑ雪 Ｆ、 Ｘ Ａ、 ＋ Ｆ、 Ｘ Ａ。Qz + Q snow F, X A, + F, X A.
そこ鷲（３）式に示されるＯ８濃度目標値ＡＯＩを算出
するためには、０意濃度目標値演算器ｎの入力として、
Ｒ１＊ Ｒ１ｅ Ａｌ ＊ Ａ雪 ９μｍ 、μ禦を
与えれば良い。In order to calculate the O8 concentration target value AOI shown in equation (3), as an input to the O8 concentration target value calculator n,
R1*R1e Al*A snow 9μm, μ wire should be given.
（４）式から明らかなように過剰空気率μは、声１残声
、のときには混焼比Ｒｔ −Ｒｔによっても変化する
ので、（４）式に従って過剰空気率声を求め、それを用
いて（３）式により０．＃度目標値ＡＯＩを算出すれば
、混焼比Ｒ，，Ｒ，を加味した燃焼制御が実現出来るこ
とが理解される。As is clear from the equation (4), the excess air ratio μ also changes depending on the mixed combustion ratio Rt - Rt when the voice is 1 aftertone. 3) According to the formula, 0. It is understood that by calculating the # degree target value AOI, combustion control that takes into account the mixed combustion ratios R, , R, can be realized.
一般に、燃料源の種々の状況により、また燃焼設備側の
都合により、運転中にしばしば混焼比Ｒ□、Ｒ１が変更
される。また、燃料の種類（ガス、重油、など）によっ
て、完全燃焼に要する空気過剰率μｍ 、μ、は異なる
（即ちμ、＼μ、）。Generally, the co-combustion ratios R□ and R1 are often changed during operation due to various conditions of the fuel source and convenience of the combustion equipment. Further, the excess air ratio μm, μ, required for complete combustion differs depending on the type of fuel (gas, heavy oil, etc.) (i.e., μ, ＼μ,).
さらに、同じ燃料でも負荷の大小により完全燃焼に要す
る空気過剰率は異なる。したがって、前記のように０．
濃紅目標値Ａｏｌ″に：自動的に算出して、０．制御に
行なえば、あらゆる燃焼設備の使用状態に対して最適燃
焼効率全得ることが出来る。Furthermore, even with the same fuel, the excess air ratio required for complete combustion differs depending on the load. Therefore, as mentioned above, 0.
If the target value Aol'' is automatically calculated and controlled to 0.0, the optimum combustion efficiency can be obtained for all usage conditions of the combustion equipment.
以上の実施例の説明においては、燃料が２種類の場仕に
ついて述べたが、燃料の種類が３種類以上であっても同
様に適用出来ることはいうまでもない。また、この発明
は、排ガス中の０１ ｆｉ度を検出して、その検出値と
目標値に−ｉさせるように空気流量を修正制御する点に
特徴があるので、燃料流量と空気流量の制御方法が実施
例に示されたものと異なるものであっても同様に適用出
来る。In the above description of the embodiment, the case where two types of fuel are used has been described, but it goes without saying that the present invention can be similarly applied even when there are three or more types of fuel. Furthermore, this invention is characterized in that it detects 01 fi degrees in exhaust gas and corrects and controls the air flow rate so as to make the detected value and target value -i. It can be applied in the same way even if it is different from that shown in the embodiment.
この実施例では、空気流量の制御は燃料の鴇類毎に行な
っているが、一括して一カ所でフィードバック制御をし
た後に燃料毎に分配することも出来る。また、０．＃度
目標値Ａｏｇの算出にあた演算式を用いることも可能で
ある。さらに、多種燃料のすべての燃料の混焼比を演算
式に用いる必要はなく、一部の燃料の混焼比のみを用い
ても良い。In this embodiment, the air flow rate is controlled for each type of fuel, but it is also possible to perform feedback control at one location and then distribute it for each type of fuel. Also, 0. It is also possible to use an arithmetic expression to calculate the # degree target value Aog. Furthermore, it is not necessary to use the co-firing ratios of all of the various fuels in the calculation equation, and only the co-firing ratios of some of the fuels may be used.
空気流量補正信号を空気流量演算器の出力と混合するた
めに乗算器を用いたが、加減賞器を用いて行うことも可
能である。Although a multiplier is used to mix the air flow rate correction signal with the output of the air flow rate calculator, it is also possible to use an adder/subtractor.
以上、詐細に説明したように、この発明によれば、排ガ
ス中のＯｓ １１度を検出して、この検出製置が混焼比
を加味して算出される０、濃度目標値に一致するように
空気流量を制御するようにしたので、混焼比ヤ、空気過
剰率を任意に変更しても、自動的に最適の排ガスＯ麿濃
度を保持して最適燃焼効率を維持することが出来る利点
がある。As explained in detail above, according to the present invention, Os 11 degrees in the exhaust gas is detected, and this detection setting matches the target concentration value of 0, which is calculated by taking into account the co-combustion ratio. Since the air flow rate is controlled, the advantage is that even if the co-combustion ratio and excess air ratio are arbitrarily changed, the optimal exhaust gas O concentration can be automatically maintained and the optimal combustion efficiency can be maintained. be.
第１図は、従来の燃焼制御装置を示す系統図、第２図は
この発明の一実施例を示す系統図である。
３．４−燃料、１１・・・空気、１６ 、１７・・・空
気流量調節計、２０ 、２１・・・空気流Ｉｌ演算器、
２２・・・０．濃度検出センサ、２３・・・０．濃度目
標値演算器、２４・・・０．濃度目標指令信号、２５・
・・０．濃度調節計、２６ 、２７ ・・・演算器、２
８ 、２９・・・空気流置割（財）信号、Ｒ，、Ｒ，・
・・混焼比二
出願人代理人 猪 股 渭FIG. 1 is a system diagram showing a conventional combustion control device, and FIG. 2 is a system diagram showing an embodiment of the present invention. 3.4-Fuel, 11... Air, 16, 17... Air flow controller, 20, 21... Air flow Il calculator,
22...0. Concentration detection sensor, 23...0. Concentration target value calculator, 24...0. Concentration target command signal, 25.
・・0. Concentration controller, 26, 27... Arithmetic unit, 2
8, 29...Air flow distribution (goods) signal, R,, R,...
...Mixed Firing Hiji Applicant's Representative, Akira Inomata
Claims (1)
ための空気ｉｔを最適燃焼効率を得るように制御する燃
焼制御装置において、燃焼排ガス中の０．濃度を検出す
るセンサと、前記混焼比のうちの少なくとも１つを用い
て前記最適燃焼効率を与える排がス中の０！濃度目標値
を算出する０１ｆｌｋ度目律値慎算器と、前記センサに
よって検出されたＯ１濃度値が、前記０．濃度目標値に
一致するように前記空気流量を補正するための信号を発
生するＯ１濃ＦｉＬｖ４節計と、前記空気流量補正信号
を空気流量制御用の空気流量調節計に卵数するための演
算器とを設えたことを特徴とする燃焼制御装置。In a combustion control device that controls air it for completely combusting a plurality of fuels supplied at a certain co-combustion ratio so as to obtain the optimum combustion efficiency, 0. 0! in the exhaust gas that provides the optimum combustion efficiency using a sensor that detects the concentration and at least one of the co-combustion ratios. The O1 concentration value detected by the 01flk scale value calculator for calculating the concentration target value and the sensor is calculated from the 0. an O1 concentrated FiLv4 meter that generates a signal for correcting the air flow rate so as to match the target concentration value; and a computing unit that sends the air flow rate correction signal to an air flow rate controller for controlling the air flow rate. A combustion control device characterized by being equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14351781A JPS5845411A (en) | 1981-09-11 | 1981-09-11 | Combustion control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14351781A JPS5845411A (en) | 1981-09-11 | 1981-09-11 | Combustion control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5845411A true JPS5845411A (en) | 1983-03-16 |
Family
ID=15340577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14351781A Pending JPS5845411A (en) | 1981-09-11 | 1981-09-11 | Combustion control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5845411A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0352619A2 (en) * | 1988-07-29 | 1990-01-31 | MARTIN GmbH für Umwelt- und Energietechnik | Process for regulating the firing power in combustion plants |
| JP2009274738A (en) * | 2008-05-14 | 2009-11-26 | Kokoku Unyu Kk | Assembling type pallet |
| CN106677332A (en) * | 2016-12-30 | 2017-05-17 | 广东工业大学 | Solar house |
-
1981
- 1981-09-11 JP JP14351781A patent/JPS5845411A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0352619A2 (en) * | 1988-07-29 | 1990-01-31 | MARTIN GmbH für Umwelt- und Energietechnik | Process for regulating the firing power in combustion plants |
| JP2009274738A (en) * | 2008-05-14 | 2009-11-26 | Kokoku Unyu Kk | Assembling type pallet |
| CN106677332A (en) * | 2016-12-30 | 2017-05-17 | 广东工业大学 | Solar house |
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