JP2706254B2 - Master fuel switching device for multi-fuel boiler - Google Patents
Master fuel switching device for multi-fuel boilerInfo
- Publication number
- JP2706254B2 JP2706254B2 JP63086661A JP8666188A JP2706254B2 JP 2706254 B2 JP2706254 B2 JP 2706254B2 JP 63086661 A JP63086661 A JP 63086661A JP 8666188 A JP8666188 A JP 8666188A JP 2706254 B2 JP2706254 B2 JP 2706254B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- master
- signal
- boiler
- switching
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/002—Regulating fuel supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/36—PID signal processing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/08—Controlling two or more different types of fuel simultaneously
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は多種燃料ボイラのマスタ燃料切替装置に関す
る。Description: TECHNICAL FIELD The present invention relates to a master fuel switching device for a multi-fuel boiler.
多種燃料を使用するボイラにおいては、主蒸気圧力を
制御する燃料は常に１種類の燃料で行なっており、他種
燃料への切替はその都度手動操作にて行なっている。例
えば、第３図において、蒸気圧力信号31を減算器32に送
り、これを設定値と減算器32を用いて、制御偏差信号を
作る。制御信号に見合った操作信号を制御器（PID制御
器）33で作成し、この信号と先行信号である主蒸気流量
信号を加算器34で加算されたものがボイラマスタ信号で
ある。In a boiler using multiple kinds of fuels, the fuel for controlling the main steam pressure is always made of one kind of fuel, and switching to another kind of fuel is performed by manual operation each time. For example, in FIG. 3, a steam pressure signal 31 is sent to a subtractor 32, which uses the set value and the subtractor 32 to generate a control deviation signal. An operation signal corresponding to the control signal is created by a controller (PID controller) 33, and a signal obtained by adding this signal and a main steam flow rate signal, which is a preceding signal, by an adder 34 is a boiler master signal.
これに全燃料流量を減算器35にて減算したものが燃料
デマンドであり、手動切替器36にて切替えられてこの信
号が、各燃料の制御器37,38を経て各燃料操作端39への
設定値信号である。The fuel demand is obtained by subtracting the total fuel flow rate by the subtractor 35, and the fuel demand is switched by the manual switch 36, and this signal is sent to each fuel operating end 39 via the controller 37, 38 for each fuel. This is a set value signal.
一般に、多種燃料を使用する発電所においては、マス
タ燃料を多様化し、ボイラの運用範囲の拡大を図り、プ
ラント全体の効率改善を図る必要があるが、従来は、前
記の如く、主マスタ燃料の切替えは、手動となってお
り、また主マスタ燃料の条件には主蒸気圧力の変化分に
見合う分の燃料が必要であり、燃料の流量、圧力、温
度、等に安定した供給を必要としており高度の経験等が
必要であった。さらに主マスタ燃料の切替時には、上記
の事項をその都度判断する必要があり、マスタ燃料とな
り得る燃料が必然的に限定、制限されてくるという問題
点があった。Generally, in a power plant that uses a variety of fuels, it is necessary to diversify the master fuel, expand the operation range of the boiler, and improve the efficiency of the entire plant. Switching is manual, and the condition of the main master fuel requires the fuel corresponding to the change in the main steam pressure, and requires a stable supply of fuel flow rate, pressure, temperature, etc. Advanced experience was required. Further, when switching the main master fuel, it is necessary to judge the above items each time, and there is a problem that the fuel that can be the master fuel is necessarily limited or limited.
本発明の課題は、上記従来の問題点を解消することが
できる多種燃料ボイラのマスタ燃料切替装置を提供する
ことである。An object of the present invention is to provide a master fuel switching device for a multi-fuel boiler which can solve the above-mentioned conventional problems.
本発明による多種燃料ボイラのマスタ燃料切替装置
は、多種燃料ボイラにおいて、マスタ燃料となり得る各
種燃料にマスタ燃料となる優先順位を設定する手段と、
各マスタ燃料に対しそれぞれ燃料切替の条件となる上限
および下限ポイントを設定する手段と、前記マスタ燃料
が前記上限または下限ポイントに達したときに次順位の
マスタ燃料に自動的に切替える手段とを具備してなるこ
とを特徴とする。The multi-fuel boiler master fuel switching device according to the present invention is a multi-fuel boiler, in a multi-fuel boiler, means for setting a priority order to be a master fuel for various fuels that can be a master fuel,
Means for setting upper and lower limit points serving as fuel switching conditions for each master fuel, and means for automatically switching to a next-rank master fuel when the master fuel reaches the upper or lower limit point. It is characterized by becoming.
本発明によれば、各種マスタ燃料となりうる各各の燃
料に対し、ある一定の上，下限ポイントを設け、マスタ
燃料となる優先順位をあらかじめ設定し、この上下限に
掛った場合に自動的に次に選択されたマスタ燃料に切替
えることにより、マスタ燃料の多様化に対する自動切替
が可能となり、多種燃料を使用するボイラの運用範囲が
広がる。According to the present invention, certain upper and lower limit points are set for each fuel that can be various master fuels, and the priority order as the master fuel is set in advance. Next, by switching to the selected master fuel, automatic switching to diversification of the master fuel becomes possible, and the operation range of the boiler using various fuels is expanded.
第１図は、本発明の一実施例の構成を示すブロック図
である。１は蒸気圧力の信号でこれを設定値２と減算器
３を用いて制御偏差信号を作る。制御信号に見合った操
作信号を制御器（PID制御）４で作成し、この信号と先
行信号である主蒸気流量信号５を加算器６で加算された
ものがボイラマスタ信号である。これに全燃料流量７を
減算器８にて減算したものが、燃料デマンドであり、こ
の信号が各種燃料操作端用設定値信号である。なお、第
１図において、９〜12は燃料デマンドと各種燃料の設定
値との切替器、13〜16は各種燃料の燃料設定値、17〜20
は各種燃料の制御器、21〜24は各種燃料操作端を示す。
ここで説明の為、操作端21での燃料をＡ燃料、操作端2
2、23,24での各燃料をそれぞれB,C,D燃料とする。FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. Reference numeral 1 denotes a steam pressure signal, which is used to generate a control deviation signal using a set value 2 and a subtractor 3. An operation signal corresponding to the control signal is generated by the controller (PID control) 4, and a signal obtained by adding this signal and the main steam flow rate signal 5 which is a preceding signal by the adder 6 is a boiler master signal. The fuel demand is obtained by subtracting the total fuel flow rate 7 by the subtractor 8, and this signal is a set value signal for various fuel operating terminals. In FIG. 1, 9 to 12 are switches between fuel demand and set values of various fuels, 13 to 16 are fuel set values of various fuels, and 17 to 20.
Denotes a controller for various fuels, and 21 to 24 denote operation terminals for various fuels.
For the sake of explanation, the fuel at the operating end 21 is A fuel, and the operating end 2 is
The fuels in 2, 23, and 24 are B, C, and D fuels, respectively.
上記本発明の一実施例の作用について説明する。先
づ、最初に各種燃料でマスタ燃料として運用する場合の
優先順序を決める。（例えば、Ａ燃料→Ｂ燃料→Ｃ燃料
→Ｄ燃料の順）。次に、各切替器９〜12の切替条件を決
める。例えば、Ａ燃料の流量、圧力、温度等マスタ燃料
としての条件を第２図に示すロジックで作成する。The operation of the embodiment of the present invention will be described. First, a priority order for operating various fuels as a master fuel first is determined. (For example, fuel A → fuel B → fuel C → fuel D). Next, the switching conditions of each of the switches 9 to 12 are determined. For example, conditions as a master fuel such as the flow rate, pressure, and temperature of the A fuel are created by the logic shown in FIG.
切替器９には、Ａ燃料流量信号が上下限モニタ41に、
Ａ燃料圧力信号が上下限モニタ47に、Ａ燃料温度信号が
上下限モニタ48にそれぞれ送られ、更にB,C,D燃料マス
タ制御信号がそれぞれNOT回路44,45,46へ送られ、優先
順位１番および他条件が送られ、AND回路42により切替
条件が決定される。例えば、第２図において、優先順位
１番のＡ燃料流量がある範囲内から外れた場合は上下限
モニタ41より０のロジック信号が出力され、AND回路42
の出力が０になる。すると切替器９の信号が燃料デマン
ドからＡ燃料デマンドへ切替る。The switcher 9 sends the A fuel flow signal to the upper and lower limit monitor 41,
The A fuel pressure signal is sent to the upper and lower limit monitor 47, the A fuel temperature signal is sent to the upper and lower limit monitor 48, and the B, C, D fuel master control signals are sent to the NOT circuits 44, 45, 46, respectively. The first and other conditions are sent, and the switching condition is determined by the AND circuit 42. For example, in FIG. 2, when the fuel flow rate of the first-priority A fuel is out of a certain range, a logic signal of 0 is output from the upper and lower limit monitor 41 and the AND circuit 42 is output.
Becomes zero. Then, the signal of the switch 9 switches from the fuel demand to the A fuel demand.
また、Ａ種燃料がマスタ燃料より切離された場合、Ｂ
燃料の第２図と同様のＢ種燃料ロジックのＡ燃料マスタ
制御が除外となる為、Ｂ種燃料のAND回路42相当が１と
なりＢ種燃料が圧力制御を行ない出す。Also, when the type A fuel is separated from the master fuel, B
Since the A fuel master control of the B-type fuel logic similar to that of FIG. 2 for fuel is excluded, the equivalent of the B-type fuel AND circuit 42 becomes 1, and the B-type fuel performs pressure control.
以下C,Dの各種燃料についても上記と同様なロジック
により、自動的にマスタ燃料の切替えが行なわれる。Hereinafter, the master fuel is automatically switched for the various fuels C and D according to the same logic as described above.
本発明によれば、多種燃料ボイラのマスタ燃料を自動
的に切替えることにより、燃料の多様化と運用範囲の拡
大を図ることができる。ADVANTAGE OF THE INVENTION According to this invention, diversification of a fuel and expansion of an operation range can be aimed at by automatically switching the master fuel of a multi-fuel boiler.
第１図は、本発明の一実施例における燃料制御回路のブ
ロック図、第２図は本発明の一実施例におけるマスタ燃
料の切替条件を決めるロジックを示す図、第３図は従来
例を示す図である。 ９〜12……切替器、13〜16……燃料設定値、17〜20……
制御器。FIG. 1 is a block diagram of a fuel control circuit in one embodiment of the present invention, FIG. 2 is a diagram showing logic for determining a switching condition of a master fuel in one embodiment of the present invention, and FIG. 3 is a conventional example. FIG. 9-12: Changeover device, 13-16: Fuel setting value, 17-20:
Controller.
Claims (1)
り得る各種燃料にマスタ燃料となる優先順位を設定する
手段と、各マスタ燃料に対しそれぞれ燃料切替の条件と
なる上限および下限ポイントを設定する手段と、前記マ
スタ燃料が前記上限または下限ポイントに達したときに
次順位のマスタ燃料に自動的に切替える手段とを具備し
てなることを特徴とする多種燃料ボイラのマスタ燃料切
替装置。In a multi-fuel boiler, a means for setting a priority order of various fuels which can be a master material as a master fuel, and a means for setting an upper limit and a lower limit point serving as fuel switching conditions for each master fuel. Means for automatically switching to a next-rank master fuel when the master fuel reaches the upper or lower limit point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63086661A JP2706254B2 (en) | 1988-04-08 | 1988-04-08 | Master fuel switching device for multi-fuel boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63086661A JP2706254B2 (en) | 1988-04-08 | 1988-04-08 | Master fuel switching device for multi-fuel boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01260212A JPH01260212A (en) | 1989-10-17 |
| JP2706254B2 true JP2706254B2 (en) | 1998-01-28 |
Family
ID=13893217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63086661A Expired - Fee Related JP2706254B2 (en) | 1988-04-08 | 1988-04-08 | Master fuel switching device for multi-fuel boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2706254B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266182A (en) * | 2020-03-05 | 2020-06-12 | 广东电科院能源技术有限责任公司 | Coal-fired power plant coal-cut-off data analysis method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57164218A (en) * | 1981-04-01 | 1982-10-08 | Hitachi Ltd | Runback control system for multiple type fuel mixture combustion boiler |
| JPS5949424A (en) * | 1982-09-14 | 1984-03-22 | Sumitomo Metal Ind Ltd | Controlling method of combustion in boiler |
-
1988
- 1988-04-08 JP JP63086661A patent/JP2706254B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01260212A (en) | 1989-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |