JPS5821171B2 - Control device for co-firing furnace - Google Patents
Control device for co-firing furnaceInfo
- Publication number
- JPS5821171B2 JPS5821171B2 JP52105692A JP10569277A JPS5821171B2 JP S5821171 B2 JPS5821171 B2 JP S5821171B2 JP 52105692 A JP52105692 A JP 52105692A JP 10569277 A JP10569277 A JP 10569277A JP S5821171 B2 JPS5821171 B2 JP S5821171B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- ratio
- amount
- control valve
- amounts
- 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.)
- Expired
Links
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- Regulation And Control Of Combustion (AREA)
- Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Description
【発明の詳細な説明】 この発明は混焼炉の制御装置に関する。[Detailed description of the invention] The present invention relates to a control device for a co-firing furnace.
２種以上の燃料を混焼するボイラー、加熱炉などの炉に
おいては、最終制御量（ボイラーの場合は蒸気圧力、加
熱炉の場合は温度）の制御にあたり、各燃料量の割合が
常に設定されたとおりとなるように各燃料量の供給を制
御することが行なわれる。In furnaces such as boilers and heating furnaces that co-fire two or more types of fuel, the ratio of each fuel amount is always set when controlling the final control amount (steam pressure in the case of a boiler, temperature in the case of a heating furnace). The supply of each fuel amount is controlled so that the amount of fuel is as follows.
第１図は従来のこの種制御装置のブロック線図を示すも
ので、ＰＴは混焼炉たとえばボイラーの蒸気圧力を検出
して、これに対応する値をもつ電気信号を発する圧力変
換器、ＦＴｌ、ｌ”Ｔ２はボイラーに供給される２種の
燃料量のそれぞれを検出してこれに対応する値をもつ電
気信号を発する第１及び第２の流量変換器、ＰＣは圧力
調節器で、圧力変換器ＰＴからの信号と、設定圧力に対
応する値をもつ設定圧力信号Ｐとを入力とし、両信号に
差があるとき、そのときのボイラーの蒸気圧力が設定圧
力に到達するにぼどれだけの燃料量が必要であるかを決
定し、これに応じた電気信号を発する。FIG. 1 shows a block diagram of a conventional control device of this kind, where PT is a pressure transducer that detects the steam pressure of a co-firing furnace, such as a boiler, and issues an electric signal with a corresponding value; l"T2 is a first and second flow rate converter that detects each of the two types of fuel amounts supplied to the boiler and generates an electric signal with a corresponding value; PC is a pressure regulator; The signal from the boiler PT and the set pressure signal P having a value corresponding to the set pressure are input, and when there is a difference between the two signals, calculate how much steam pressure in the boiler at that time will reach the set pressure. It determines the amount of fuel required and emits an electrical signal accordingly.
そして第１及び第２の流量変換器Ｆ”ＴＩ、Ｆ’Ｔ２か
らの信号を加算する加算器ＡＤからの信号と前記圧力調
節器ＰＣからの信号とが全燃料調節器ＴＦＣに与えられ
、ここでボイラーの蒸気圧力を設定圧力に一致さぞるに
必要な全燃料量が決定される。Then, a signal from an adder AD that adds the signals from the first and second flow rate converters F''TI, F'T2 and a signal from the pressure regulator PC are applied to a total fuel regulator TFC, where The total amount of fuel required to match the boiler steam pressure to the set pressure is determined.
これからの信号は第１及び第２の掛算器Ｍｌ 、Ｍ２に
与えられる。The signals from this are applied to first and second multipliers Ml, M2.
第１及び第２Ｑ然料量の比は例えば全燃料量に対する第
１の燃料量の割合がＲ（０≦Ｒ≦１）として予め設定さ
れてあり、このＲに対応する信号が第」の掛算器Ｍ１に
、又信号逆転器ＦＸに入ってこれから出る（ｉ−Ｒ）な
る信号が第２の掛算器Ｍ２に入り、ここで全燃料量とそ
れぞれ掛算されて、各燃料量が決定されこれからの信号
が第１及び第２の燃料調節器Ｆ”ＣＩ 、ＰＣ２に入る
。The ratio of the first and second Q natural quantities is, for example, the ratio of the first fuel quantity to the total fuel quantity is set in advance as R (0≦R≦1), and the signal corresponding to this R is the multiplication of The signal (i-R) which enters the signal reversing device FX and is output from the signal reversing device M1 enters the second multiplier M2, where it is multiplied by the total fuel amount to determine each fuel amount and calculate the future A signal enters the first and second fuel regulators F"CI, PC2.
ここで決定された各燃料量の供給に必要な燃料調節弁の
開度が決定され、これに基いて第１及び第２の燃料の流
路に挿入された第１及び第２の燃料調節弁ＣＶＬＣＶ２
の開度〃猜］御される。The opening degrees of the fuel control valves required to supply each amount of fuel determined here are determined, and based on this, the first and second fuel control valves inserted into the first and second fuel flow paths are CVLCV2
The opening degree is controlled.
以上によって所定の蒸気圧力を発生するに必要な燃料量
を設定どおりの割合をもって第１及び第２の燃料をボイ
ラーに供給することができるようになる。As described above, it becomes possible to supply the first and second fuels to the boiler in the amount of fuel necessary to generate a predetermined steam pressure at a preset ratio.
ところで、この種制御装置に用いられる圧力調節器ＰＣ
１全燃料調節器ＴＦ’Ｃ及び燃料調節器ＦＣ１、ＦＣ２
などの各調節器は比例・積分動作付のものであることが
必要であり、このような動作を行なわないものでは実用
的な動作を期待することができない。By the way, the pressure regulator PC used in this type of control device
1 Full fuel regulator TF'C and fuel regulators FC1, FC2
It is necessary that each regulator has proportional/integral operation, and if it does not perform such operation, practical operation cannot be expected.
しかし第１図に示す構成からも理解できるように、ひと
つの燃料量を制御するのに、ボイラーの蒸気圧力検出信
号が与えられてから最終的に燃料調節弁を動作させるま
でに、圧力調節器ＰＣ１全燃料調節器ＴＦ”Ｃ１燃料調
節器ＰＣＩ（又／ｒｉＦｃ ２ ）の３台を必要として
いる。However, as can be understood from the configuration shown in Figure 1, in order to control one fuel amount, the pressure regulator must Three units are required: PC1 full fuel regulator TF" and C1 fuel regulator PCI (also/riFc 2 ).
ところがこのような調節器の存在は制御の動特性（ダイ
ナミックレスポンス）を悪くすることが知られており、
したがってその使用数が少ないことが望ましい。However, it is known that the existence of such a regulator deteriorates the dynamic characteristics (dynamic response) of the control.
Therefore, it is desirable that the number of them used is small.
この発明は混焼炉の燃料量制御にあたり、比例項分動作
付の調節器の使用台数を減らすことによって、この種制
御の動特性を改善することを目的とする。The present invention aims to improve the dynamic characteristics of this type of control by reducing the number of regulators with proportional term action in controlling the amount of fuel in a co-firing furnace.
第２図はこの発明の実施例を示す。FIG. 2 shows an embodiment of the invention.
なお第１図と同じ符号を附した部分は同−又は対応部分
を示す。Note that parts given the same reference numerals as in FIG. 1 indicate the same or corresponding parts.
図の実施例では全燃料調節器ＴＦＣに圧力調節器ＰＣ及
び加算器ＡＤからの信号を受けて設定圧力に対する全燃
料を決定することは第１図の構成と同じであるが、全燃
料調節器ＴＦ”Ｃからの信号は掛算器Ｍｌ 、Ｍ２にそ
れぞれ与えられる。In the embodiment shown in the figure, the total fuel regulator TFC receives signals from the pressure regulator PC and the adder AD to determine the total fuel for the set pressure, which is the same as the configuration shown in FIG. The signals from TF''C are applied to multipliers M1 and M2, respectively.
一方の掛算器Ｍ１には比率調節器ＲＣからの信号αが、
又他方の掛算器Ｍ２には、前記信号αを入力とする信号
逆転器ＦＸからの出力ｌ−αが入力として与えられる。One multiplier M1 receives a signal α from the ratio adjuster RC,
The other multiplier M2 is supplied with the output l-α from the signal inverter FX which receives the signal α as an input.
両折算器Ｍｌ 、Ｍ２の出力によって各燃料調節弁ＣＶ
Ｉ、ＣＶ２の開度が決定される。Each fuel control valve CV is determined by the output of both folders Ml and M2.
The opening degree of I and CV2 is determined.
比率調節器ＲＣＫは、予め定められている第１及び第２
の燃料量の比が、た浸カ全燃料量に対する第１の燃料量
の割合Ｒに対応する信号が与えられている。The ratio adjuster RCK has predetermined first and second ratios.
A signal is provided in which the ratio of the first fuel quantity to the total soaked fuel quantity corresponds to the ratio R of the first fuel quantity.
ここでもしこの割合Ｒ及びｉ −Ｒを掛算器Ｍ１ 、Ｍ
２に与えて掛算動作させたとすると、各掛算器からは燃
料調節弁ＣＶＩ 、ＣＶ２の開度は前記割合に対する値
となるかもしれないが、実際問題として、燃料調節弁の
開度とそこを流れる流量とは直線関係ではないし、又個
々の調節弁に変動があるので、開度が燃料量の割合どお
りとなったとしてもその割合どおりの燃料量が各調節弁
を流れるとは限らない。Here, if this ratio R and i - R are multiplied by M1, M
2 and perform a multiplication operation, the opening degrees of the fuel control valves CVI and CV2 may be values for the above ratio from each multiplier, but as a practical matter, the opening degrees of the fuel control valves and the flow through them may be There is no linear relationship with the flow rate, and since there are fluctuations in each control valve, even if the opening degree matches the proportion of the fuel amount, the amount of fuel does not necessarily flow through each control valve according to that proportion.
この場合第１図のように燃料調節器ＦＣ１，ＦＣ２を使
用すればこの点何ら問題はないのであるが、そのために
は比例・積分動作付の調節器が必要とならざるを得ない
ことになる。In this case, there would be no problem if fuel regulators FC1 and FC2 were used as shown in Figure 1, but for that purpose a regulator with proportional and integral action would be required. .
そのため第２図の実施例では、実際にボイラーに供給さ
れている燃料量を基にし、これから、掛算器Ｍ１ 、Ｍ
２に与える割合に対応する信号を補正して、設定された
割合どおりに各燃料が各調節弁に流れるように開度を制
御するようにしたものである。Therefore, in the embodiment shown in FIG. 2, based on the amount of fuel actually supplied to the boiler, multipliers M1, M
By correcting the signal corresponding to the ratio given to 2, the opening degree is controlled so that each fuel flows to each control valve according to the set ratio.
そのために加算器ＡＤの出力に対する第１の燃料量（実
際にボイラーに供給されている量）の割合を除算器ＤＶ
によって算出し、その算出値を比率調節器ＲＣに与え、
ここで。For this purpose, the ratio of the first fuel amount (the amount actually supplied to the boiler) to the output of the adder AD is divided by the divider DV.
and give the calculated value to the ratio adjuster RC,
here.
設定された割合Ｒを補正して出力αを発生するようにし
である。The output α is generated by correcting the set ratio R.
したがって出力αは、全体の燃料量に対する第１の燃料
量の割合がＲとなるような調節弁Ｃｖ１の開度を定める
値となる。Therefore, the output α is a value that determines the opening degree of the control valve Cv1 such that the ratio of the first fuel amount to the entire fuel amount is R.
これによって各調節弁ＣＶ１ 、ＣＶ２が掛算器Ｍｌ
、Ｍ２の出力によって開度が決定されるとき、その開度
に基き、第１及び第２の燃料量は設定された割合Ｒ（及
び１−Ｒ）どおりとなってボイラーに供給されることに
なる。As a result, each control valve CV1, CV2 has a multiplier Ml
, when the opening degree is determined by the output of M2, the first and second fuel amounts are supplied to the boiler according to the set ratio R (and 1-R) based on the opening degree. Become.
この構成においては、制御ループには圧力調節器ＰＣと
、全燃料調節器ＴＦＣとの２台だけとなる。In this configuration, there are only two units in the control loop: the pressure regulator PC and the total fuel regulator TFC.
なお比率調節器ＲＣを用いているが、上述のとおり、調
節弁ＣＶＩ、ＣＶ２の非線形性を補正するものであって
制御系の動特性には何ら関与することはない。Although the ratio controller RC is used, as described above, it is for correcting the nonlinearity of the control valves CVI and CV2, and has no influence on the dynamic characteristics of the control system.
なお以上の実施例では最終制御量がボイラーの蒸気圧力
であるが、これが加熱炉の温度であっても制御可能であ
り、その場合は圧力変換器ＰＴ、圧力調節器ＰＣに代え
て、温度変換器、温度調節器を使用すればよく、又圧力
設定値Ｐとして温度設定値を与えるようにすればよい。In the above embodiments, the final controlled variable is the steam pressure of the boiler, but it can also be controlled even if it is the temperature of the heating furnace. In that case, a temperature converter is used instead of the pressure converter PT and pressure regulator A temperature controller may be used, and a temperature setting value may be provided as the pressure setting value P.
以上のように、この発明によれば混焼炉における最終制
御量に対応する信号が与えられてから操作端である燃料
調筋弁を制御するまでの制御ループ内に使用古め比例・
積分付調節器の台数は従来構成に比較して少なくてすみ
、したがって制御の動特性を著るしく改善することがで
きる効果を奏する。As described above, according to the present invention, the used proportional and
The number of integrating regulators can be reduced compared to the conventional configuration, and therefore the dynamic characteristics of control can be significantly improved.
【図面の簡単な説明】
第１図は従来例のブロック線図、第２図はこの発明の実
施例を示すブロック線図である。
ＰＴ・・・・・・圧力変換器、Ｆ”ＴＩ 、Ｆ”Ｔ２・
・・・・・流量変換器、ＰＣ・・・・・・圧力調節器、
ＴＦＣ・・・・・・全燃料調節器、Ｍｌ 、Ｍ２・・・
・・・掛算器、ＡＤ・・・・・・加算器、ＤＶ・・・・
・徐算器、ＲＣ・・・・・・比率調節器、ＣＶｌ。
ＣＶ２・・・・・・燃料調節弁。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a conventional example, and FIG. 2 is a block diagram showing an embodiment of the present invention. PT・・・Pressure transducer, F”TI, F”T2・
...Flow rate converter, PC...Pressure regulator,
TFC... Total fuel regulator, Ml, M2...
...Multiplier, AD...Adder, DV...
- Divider, RC... Ratio adjuster, CVl. CV2...Fuel control valve.
Claims (1)
て、前記第１及び第２の各燃料の量を検出する第１及び
第２の流量変換器と、前記両流量変換器の出力から、前
記第１及び第２の燃料の量の和に対する前記第１の燃料
の量の割合を演算する除算器と、予め定められた前記第
１及び第２の燃料の量の和に対する第１の燃料の量の割
合Ｒに対応する設定信号と前記除算器からの演算値とが
与えられてあり、前記割合Ｒを前記演算値により補正し
て前記第１及び第２の燃料の量の和に対する前記第１の
燃料の量の割合がＲとなるような前記第１の燃料のため
の第１の調節弁の開度を定める出力ａを出す比率調節器
と、前記比率調節器の出力を入力とし、前記第］の調節
弁及び前記第２の燃料のための第２の調節弁を流れる各
燃料の量の割合がＲ及び（１−Ｒ）となるように前記各
調節弁の各開度を決ホする信号分配用の掛算器とを備え
てなる混焼炉の制御装置。1 In a co-combustion furnace that co-combusts a first fuel and a second fuel, first and second flow rate converters that detect the amounts of each of the first and second fuels, and outputs of both flow rate converters. a divider that calculates the ratio of the first fuel amount to the sum of the first and second fuel amounts; and a first divider for the predetermined sum of the first and second fuel amounts. A setting signal corresponding to a ratio R of the amount of fuel and a calculated value from the divider are given, and the ratio R is corrected by the calculated value to calculate the sum of the first and second fuel amounts. a ratio controller that outputs an output a that determines the opening degree of a first control valve for the first fuel such that the ratio of the amount of the first fuel to the first fuel is R; As an input, each opening of each of the control valves is set such that the ratio of the amount of each fuel flowing through the first control valve and the second control valve for the second fuel becomes R and (1-R). A control device for a co-firing furnace, comprising a multiplier for signal distribution that determines the degree of heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52105692A JPS5821171B2 (en) | 1977-08-31 | 1977-08-31 | Control device for co-firing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52105692A JPS5821171B2 (en) | 1977-08-31 | 1977-08-31 | Control device for co-firing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5437925A JPS5437925A (en) | 1979-03-20 |
| JPS5821171B2 true JPS5821171B2 (en) | 1983-04-27 |
Family
ID=14414440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52105692A Expired JPS5821171B2 (en) | 1977-08-31 | 1977-08-31 | Control device for co-firing furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5821171B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017199593A1 (en) | 2016-05-20 | 2017-11-23 | 村田機械株式会社 | Transport vehicle and transport method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60117001A (en) * | 1983-11-28 | 1985-06-24 | 株式会社島津製作所 | Control system of combustion of mixed firing boiler |
| JPS62228809A (en) * | 1986-03-31 | 1987-10-07 | Inshinaa Kogyo Kk | Full automatic chaff boiler combustion device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51140239A (en) * | 1975-05-29 | 1976-12-03 | Nippon Steel Corp | Combustion control system by mixed fuel |
| JPS5280524A (en) * | 1975-12-26 | 1977-07-06 | Daido Steel Co Ltd | Combustion controller of plural fuels for industrial furnace |
-
1977
- 1977-08-31 JP JP52105692A patent/JPS5821171B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51140239A (en) * | 1975-05-29 | 1976-12-03 | Nippon Steel Corp | Combustion control system by mixed fuel |
| JPS5280524A (en) * | 1975-12-26 | 1977-07-06 | Daido Steel Co Ltd | Combustion controller of plural fuels for industrial furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017199593A1 (en) | 2016-05-20 | 2017-11-23 | 村田機械株式会社 | Transport vehicle and transport method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5437925A (en) | 1979-03-20 |
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