JPS63213701A - Fluidized-bed boiler controller - Google Patents
Fluidized-bed boiler controllerInfo
- Publication number
- JPS63213701A JPS63213701A JP4809387A JP4809387A JPS63213701A JP S63213701 A JPS63213701 A JP S63213701A JP 4809387 A JP4809387 A JP 4809387A JP 4809387 A JP4809387 A JP 4809387A JP S63213701 A JPS63213701 A JP S63213701A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- controller
- boiler
- obtains
- main steam
- 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
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は流動床ボイラの制御装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a control device for a fluidized bed boiler.
従来の流動床ボイラの制御装置は、第２図に示すように
主蒸気圧力の計測信号１゛と設定値２との偏差信号を減
算器３で求め、この減算器３で求められた偏差信号から
操作信号を制御器４（ＰＩＤ）で求め、さらに制御器４
で求められた操作信号と主蒸気流量の計測信号５とを加
算器６で加算し、この加算器６で求められたボイラマス
ター信号でスプレッダフィーダの速度を制御することに
より゛主蒸気圧力を一定に保つ構成となっている。As shown in FIG. 2, the conventional fluidized bed boiler control device uses a subtracter 3 to obtain a deviation signal between the main steam pressure measurement signal 1 and a set value 2, and then calculates the deviation signal obtained by the subtractor 3. The controller 4 (PID) obtains an operation signal from the
An adder 6 adds the operation signal obtained in step 1 to the main steam flow rate measurement signal 5, and the boiler master signal obtained in the adder 6 controls the speed of the spreader feeder to keep the main steam pressure constant. It is configured to maintain
このように従来の流動床ボイラにおいては、スプレッダ
フィーダの速度で制御して主蒸気圧力を一定に保ってい
るが、天候や炭種により制御する速度が異なるため、不
安定な制御となっていた。In this way, in conventional fluidized bed boilers, main steam pressure is kept constant by controlling the speed of the spreader feeder, but the control speed varies depending on the weather and coal type, resulting in unstable control. .
本発明は上記の問題点を解決するためになされたもので
、その目的とするところは、流動床ボイラの安定した制
御が可能な流動床ボイラ制御装置を提供することにある
。The present invention has been made to solve the above problems, and its purpose is to provide a fluidized bed boiler control device that can stably control a fluidized bed boiler.
上記問題点を解決するために本発明は、主蒸気圧力の計
測信号と設定値との偏差信号を求める減算器と、この減
算器で求められた偏差信号から操作信号を求める制御器
と、この制御器で求められた操作信号と主蒸気流量の計
測信号とを加算してボイラマスター信号を求める加算器
と、この加算器で求められたボイラマスター信号と主蒸
気流量の計Ｍｊ信号との比を求める割算器と、この割算
器で求められた信号からボイラプラント特性によって決
められた信号を求める関数発生器と、この関数発生器で
求められた信号と減算器で求められた信号とを掛は合せ
て制御器に人力される信号を作る掛算器とを具備したこ
とを特徴とするものである。In order to solve the above problems, the present invention provides a subtracter that obtains a deviation signal between a measurement signal of main steam pressure and a set value, a controller that obtains an operation signal from the deviation signal obtained by this subtractor, and a controller that obtains an operation signal from the deviation signal obtained by the subtractor. An adder that obtains a boiler master signal by adding the operation signal obtained by the controller and the main steam flow rate measurement signal, and a ratio between the boiler master signal obtained by this adder and the main steam flow rate meter Mj signal. A divider that calculates , a function generator that calculates a signal determined by the boiler plant characteristics from the signal calculated by this divider, and a function generator that calculates the signal determined by this function generator and the signal calculated by the subtracter. The present invention is characterized in that it is equipped with a multiplier that creates a signal that is manually input to the controller.
つまり、本発明では加算器で求められたボイラマスター
信号と主蒸気流；の；１３信号との比を割算器で求め、
割算器で求められた信号からボイラのプラント特性によ
って決められた信号を関数発生器で求める。そして、関
数発生器の信号と減算器の信号とを掛算器で掛は合せ、
掛算器の信号を制御器に入力することにより、プラント
特性およびフィーダ特性に対応した制御器パラメータを
得ることができる。In other words, in the present invention, the ratio between the boiler master signal obtained by the adder and the main steam flow ;13 signal is obtained by the divider,
A function generator determines a signal determined by the plant characteristics of the boiler from the signal determined by the divider. Then, the signal of the function generator and the signal of the subtracter are multiplied by a multiplier,
By inputting the multiplier signal to the controller, controller parameters corresponding to plant characteristics and feeder characteristics can be obtained.
以下、図面を参照して本発明の実施例について説明する
。なお、第２図の従来例と同一部分には同一符号を付し
、その詳細な説明は省略する。Embodiments of the present invention will be described below with reference to the drawings. Note that the same parts as in the conventional example shown in FIG. 2 are given the same reference numerals, and detailed explanation thereof will be omitted.
第１図は本発明による流動床ボイラ制御装置の一実施例
を示す図で、図中７は加算器６で求められたボイラマス
ター信号と主蒸気流量の計測信号５との比を求める割算
器、８は割算器７の信号からボイラのプラント特性によ
って決められた信号を求める関数発生器、９は関数発生
器８の信号と減算器３の信号とを掛は合せて制御器４に
入力される信号を作る掛算器である。FIG. 1 is a diagram showing an embodiment of the fluidized bed boiler control device according to the present invention. In the figure, 7 is a division function for calculating the ratio between the boiler master signal obtained by the adder 6 and the main steam flow rate measurement signal 5. 8 is a function generator that obtains a signal determined by the plant characteristics of the boiler from the signal of the divider 7; 9 is a function generator that multiplies the signal of the function generator 8 by the signal of the subtracter 3 and sends the result to the controller 4; This is a multiplier that creates the input signal.
このように本実施例では、加算器６で求められたボイラ
マスター信号と主蒸気流量の計測信号５との比を割算器
７で求め、割算器７の信号からボイラのプラント特性に
よって決められた信号を関数発生器８で求める。そして
、関数発生器８の信号と減算器３の信号とを掛算器９で
掛は合せ、掛算器９の信号を制御器４に入力することに
より、プラント特性およびフィーダ特性に対応した制御
器パラメータを得ることができる。したがって、本実施
例においては天候や炭種によりスプレッダフィーダの制
御速度を変える必要がなく、安定したボイラ制御が可能
となる。In this embodiment, the ratio between the boiler master signal obtained by the adder 6 and the main steam flow rate measurement signal 5 is obtained by the divider 7, and the ratio is determined from the signal of the divider 7 according to the plant characteristics of the boiler. A function generator 8 obtains the signal. Then, the signal from the function generator 8 and the signal from the subtracter 3 are multiplied by a multiplier 9, and the signal from the multiplier 9 is inputted to the controller 4, thereby controlling the controller parameters corresponding to the plant characteristics and the feeder characteristics. can be obtained. Therefore, in this embodiment, there is no need to change the control speed of the spreader feeder depending on the weather or coal type, and stable boiler control is possible.
以ト説明したように本発明によれば、プラント特性およ
びフィーダ特性に対応した制御器パラメータを得ること
ができるため、天候や炭種によりスプレッダフィーダの
制御速度を変える必要がなく、安定したボイラ制御を行
うことができる。As explained above, according to the present invention, controller parameters corresponding to plant characteristics and feeder characteristics can be obtained, so there is no need to change the control speed of the spreader feeder depending on weather or coal type, and stable boiler control can be achieved. It can be performed.
第１図は本発明による流動床ボイラ制御装置の一実施例
を示すブロック図、第２図は従来の流動床ボイラ制御装
置のブロツク図である。
１・・・主蒸気圧力の計測信号、２・・・設定値、３・
・・減算器、４・・・制御器、５・・・主蒸気流星の計
測信号、６・・・加算器、７・・・割算器、８・・・関
数発生器、９・・・掛算器。FIG. 1 is a block diagram showing an embodiment of a fluidized bed boiler control device according to the present invention, and FIG. 2 is a block diagram of a conventional fluidized bed boiler control device. 1... Main steam pressure measurement signal, 2... Set value, 3...
... Subtractor, 4... Controller, 5... Main steam meteor measurement signal, 6... Adder, 7... Divider, 8... Function generator, 9... Multiplier.
Claims (1)
算器と、この減算器で求められた偏差信号から操作信号
を求める制御器と、この制御器で求められた操作信号と
主蒸気流量の計測信号とを加算してボイラマスター信号
を求める加算器と、この加算器で求められたボイラマス
ター信号と主蒸気流量の計測信号との比を求める割算器
と、この割算器の信号からボイラプラント特性によって
決められた信号を求める関数発生器と、この関数発生器
の信号と減算器の信号とを掛合せて制御器に入力される
信号を作る掛算器とを具備したことを特徴とする流動床
ボイラ制御装置。A subtracter that obtains a deviation signal between the main steam pressure measurement signal and the set value, a controller that obtains an operating signal from the deviation signal obtained by this subtractor, and an operating signal obtained by this controller and the main steam flow rate. an adder that calculates the boiler master signal by adding the measured signals of A function generator that obtains a signal determined by the boiler plant characteristics from the boiler plant characteristics, and a multiplier that multiplies the signal of the function generator and the signal of the subtracter to produce a signal input to the controller. Fluidized bed boiler control equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4809387A JPS63213701A (en) | 1987-03-03 | 1987-03-03 | Fluidized-bed boiler controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4809387A JPS63213701A (en) | 1987-03-03 | 1987-03-03 | Fluidized-bed boiler controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63213701A true JPS63213701A (en) | 1988-09-06 |
Family
ID=12793700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4809387A Pending JPS63213701A (en) | 1987-03-03 | 1987-03-03 | Fluidized-bed boiler controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63213701A (en) |
-
1987
- 1987-03-03 JP JP4809387A patent/JPS63213701A/en active Pending
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