JP2544948B2 - Boiler automatic number control system - Google Patents
Boiler automatic number control systemInfo
- Publication number
- JP2544948B2 JP2544948B2 JP62292842A JP29284287A JP2544948B2 JP 2544948 B2 JP2544948 B2 JP 2544948B2 JP 62292842 A JP62292842 A JP 62292842A JP 29284287 A JP29284287 A JP 29284287A JP 2544948 B2 JP2544948 B2 JP 2544948B2
- Authority
- JP
- Japan
- Prior art keywords
- boiler
- abnormal
- alarm signal
- pressure
- boilers
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/02—Controlling two or more burners
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、多缶設置システムにおけるボイラの自動
台数制御に関するものであり、特に、ボイラの異常状態
を検知し、および異常兆候を予知して、当該異常ボイラ
にかえて他の燃焼可能なボイラを自動的にバックアップ
起動させるようにしたボイラの自動台数制御装置に関す
るものである。Description: TECHNICAL FIELD The present invention relates to automatic number control of boilers in a multi-can installation system, and particularly to detecting an abnormal state of a boiler and predicting an abnormal sign. The present invention relates to a boiler automatic number control device that automatically starts backup of another combustible boiler instead of the abnormal boiler.
従来のボイラ多缶設置システムは、複数のボイラに共
通のスチームヘッダを接続し、該スチームヘッダに負荷
状態を表示する圧力計と蒸気圧力を設定圧に維持し、負
荷を圧力信号として出力する圧力調節器を設け、前記ス
チームヘッダ内の圧力を検知し、その圧力信号に基づい
てボイラの燃焼台数および燃焼量（低燃焼あるいは高燃
焼）を自動的に制御する構成のものである。このボイラ
自動台数制御方法において、燃焼中のボイラが異常発生
によって停止した場合、該異常ボイラにかえて他のボイ
ラをバックアップ起動（停止→低燃、あるいは低燃→高
燃）させなければならない。この場合、他のボイラが、
前記異常ボイラにかわってバックアップ起動するには、
ある設定圧力値まで下がり切った圧力信号の検知が条件
となるため、結果的に応答遅れを生じ、圧力が低下しす
ぎ、ハンチングを生じる欠点を有していた。In a conventional boiler multi-can installation system, a common steam header is connected to a plurality of boilers, a pressure gauge that displays a load state on the steam header and a steam pressure are maintained at a set pressure, and a pressure that outputs the load as a pressure signal. A controller is provided, the pressure in the steam header is detected, and the number of combustions and the amount of combustion (low combustion or high combustion) of the boiler are automatically controlled based on the pressure signal. In this boiler automatic number control method, when a boiler that is burning is stopped due to an abnormality, another boiler must be backed up in place of the abnormal boiler (stop → low fuel or low fuel → high fuel). In this case, the other boiler
To start backup on behalf of the abnormal boiler,
Since detection of a pressure signal that has fallen to a certain set pressure value is a condition, as a result, a response delay occurs, the pressure drops too much, and hunting occurs.
そこで、この発明は、上記する欠点および問題点を解
決するべくなしたものであり異常発生時あるいは異常予
知時に、該異常ボイラにかえて他の燃焼可能なボイラを
速やかにバックアップ起動させ、システムにおける急激
な圧力低下、および当該圧力低下にともなうハンチング
を防止するボイラ自動台数制御装置を提供することにあ
る。Therefore, the present invention has been made to solve the above-mentioned drawbacks and problems, and when an abnormality occurs or an abnormality is predicted, another combustible boiler is promptly started as a backup in place of the abnormal boiler, and a system is provided. An object of the present invention is to provide an automatic boiler number control system that prevents a sudden pressure drop and hunting associated with the pressure drop.
この発明は、上記する目的を達成するにあたって、具
体的には、個々に起動するボイラを複数台設置し、負荷
量に応じて必要台数のボイラを順次燃焼に移行させ、負
荷変動があればその負荷変動に合わせてボイラを燃焼・
停止せしめる台数制御器を有するものにおいて、前記各
ボイラ側に、それぞれ異常を検知して警報信号を出力す
る警報信号発生手段を設け、前記各ボイラに対して燃焼
制御信号を出力する台数制御器側に、前記警報信号発生
手段からの警報信号に応答して、前記警報信号を発した
異常ボイラを判別する異常ボイラ判別部および前記異常
ボイラ判別部によって判別される異常ボイラ以外の燃焼
可能なボイラに対して燃焼制御信号を出力する演算部と
を設け、異常ボイラにかえて燃焼可能なボイラをバック
アップ起動させるようにしたボイラの自動台数制御装置
である。In order to achieve the above object, the present invention specifically installs a plurality of boilers that are individually activated, sequentially shifts the required number of boilers to combustion according to the load amount, and if there is a load fluctuation, Burn boilers according to load fluctuations
In a unit having a unit controller for stopping, a unit controller for outputting a combustion control signal to each of the boilers is provided with alarm signal generation means for detecting an abnormality and outputting an alarm signal on each of the boilers. In response to the alarm signal from the alarm signal generating means, to the combustible boiler other than the abnormal boiler discriminator for discriminating the abnormal boiler that has issued the alarm signal and the abnormal boiler discriminated by the abnormal boiler discriminator. An automatic unit number control device for a boiler, which is provided with a calculation unit for outputting a combustion control signal, so that a combustible boiler can be backed up and activated instead of the abnormal boiler.
以下、この発明になるボイラの自動台数制御装置につ
いて、図面に示す実施例のものように、４台のボイラを
台数制御する具体的な実施例にもとづいて詳細に説明す
る。Hereinafter, the automatic boiler number control device according to the present invention will be described in detail based on a concrete example in which the number of four boilers is controlled as in the embodiment shown in the drawings.
図に示すように、予め設定される台数、たとえば４台
のボイラ（1A）、（1B）、（1C）および（ID）は、後述
する台数制御器（５）に設けた演算部（７）からの燃焼
制御信号（e1）を受けて高燃焼−低燃焼−燃焼停止の３
位置制御を行うように設定されている。前記ボイラ（1
A）、（1B）、（1C）および（1D）と負荷（L0）との間
には、各ボイラの蒸気を集合し、各ボイラの圧力差およ
び圧力変動を調整するスチームヘッダ（２）がパイプラ
イン（３）を介して設けられている。前記スチームヘッ
ダ（２）には、負荷変動によるスチームヘッダ（２）の
圧力をリニアな電気信号の変化量として検出する圧力調
節器（４）が設けられている。前記圧力調節器（４）と
ボイラ（１）間には、前記圧力調節器（４）からの圧力
信号（e2）を受けて各ボイラの燃焼制御信号（e1）を発
する台数制御器（５）が設けられており、それぞれ信号
線（６）にて連結されている。台数制御器（５）には、
演算により設定された時間帯毎に運転パターンと圧力調
節器からの圧力信号（e2）とから燃焼制御の出力信号
（e1）を出力する演算部（７）が設けられている。As shown in the figure, a preset number of units, for example, four boilers (1A), (1B), (1C) and (ID) are provided in a computing unit (7) provided in a unit number controller (5) described later. High combustion-low combustion-combustion stop in response to the combustion control signal (e 1 ) from
It is set to perform position control. The boiler (1
A), (1B), (1C) and (1D) and the load (L 0 ) collect steam from each boiler, and a steam header (2) that adjusts the pressure difference and pressure fluctuation of each boiler. Are provided via a pipeline (3). The steam header (2) is provided with a pressure regulator (4) that detects the pressure of the steam header (2) due to load fluctuation as a linear change amount of an electric signal. Between the pressure regulator (4) and the boiler (1), a unit controller (which receives the pressure signal (e 2 ) from the pressure regulator (4) and issues a combustion control signal (e 1 ) for each boiler ( 5) are provided and are respectively connected by the signal line (6). In the number controller (5),
A calculation unit (7) is provided for outputting a combustion control output signal (e 1 ) from the operation pattern and the pressure signal (e 2 ) from the pressure regulator for each time period set by the calculation.
一方、この発明においては、前記各ボイラ（1A）〜
（1D）側には、それぞれ個別に各ボイラの異常を検知し
て警報信号（e3）を出力する警報信号発生手段（8A）、
（8B）、（8C）および（8D）が設けてある。前記警報信
号発生手段（8A）〜（8D）は、各ボイラに設けた圧力ス
イッチ機構により構成される。通常、個々のボイラに
は、安全装置として、ある設定圧以上に蒸気圧が上昇す
ると自動的に燃焼OFFの信号を出す圧力スイッチが設け
られている。この圧力スイッチは、圧力スイッチの上限
設定圧＞台数制御器の上限設定圧となっている。この発
明において、前記警報信号発生手段（8A）〜（8D）は、
ボイラが異常を生じた際、該異常ボイラについての上限
設定圧力を、台数制御器（５）によって設定してある圧
力より低めに設定しておき、異常発生時に警報信号
（e3）を出力するようになっている。前記警報信号発生
手段（8A）〜（8D）からの警報信号（e3）は、信号線
（９）を介して前記台数制御器（５）に入力するように
接続されている。On the other hand, in the present invention, each of the boilers (1A) to
On the (1D) side, alarm signal generating means (8A) for individually detecting the abnormality of each boiler and outputting an alarm signal (e 3 ),
(8B), (8C) and (8D) are provided. The alarm signal generating means (8A) to (8D) are constituted by a pressure switch mechanism provided in each boiler. Normally, each boiler is provided with a pressure switch as a safety device that automatically outputs a signal of combustion OFF when the vapor pressure rises above a certain set pressure. The pressure switch has an upper limit set pressure of the pressure switch> an upper limit set pressure of the unit controller. In this invention, the alarm signal generating means (8A) to (8D) are
When an abnormality occurs in the boiler, the upper limit set pressure for the abnormal boiler is set lower than the pressure set by the unit controller (5), and an alarm signal (e 3 ) is output when the abnormality occurs. It is like this. The alarm signal (e 3 ) from the alarm signal generating means (8A) to (8D) is connected to the unit number controller (5) via a signal line (9).
一方、前記台数制御器（５）側には、前記警報信号発
生手段（8A）〜（8D）からの警報信号（e3）に応答し
て、前記警報信号（e3）を発した異常ボイラを判別する
異常ボイラ判別部（10）が設けてある。前記異常ボイラ
判別部（10）の出力は、前記異常ボイラ判別部（10）に
よって判別される異常ボイラ以外の燃焼可能なボイラに
対して燃焼制御信号（e1）を出力する演算部（７）に入
力するように接続してある。On the other hand, the count control unit (5) side, in response to an alarm signal from said alarm signal generating means (8A) ~ (8D) (e 3), issued the alarm signal (e 3) abnormal Boiler An abnormal boiler discriminating unit (10) for discriminating between is provided. The output of the abnormal boiler discriminating unit (10) outputs a combustion control signal (e 1 ) to a combustible boiler other than the abnormal boiler discriminated by the abnormal boiler discriminating unit (10). It is connected to input to.
すなわち、この発明では、前記台数制御器（５）が蒸
着圧力によりボイラ燃焼台数を演算して決定し、各ボイ
ラに対し、燃焼制御信号（e1）を指示する際、そのボイ
ラが燃焼可能か否かを判別し、燃焼が不可能な場合は予
め設定した優先順位が後位のボイラに対して燃焼指示を
出力する。したがって、燃焼中のボイラに異常が発生
し、安全装置が働いて該ボイラが停止した場合、その警
報信号（e3）にもとづいて優先順位が後位のボイラに対
して燃焼指示を出力するようになっている。That is, in the present invention, when the number controller (5) calculates and determines the number of boilers burned by the vapor deposition pressure, and when instructing the combustion control signal (e 1 ) to each boiler, is it possible to burn the boilers? Whether or not combustion is impossible, a combustion instruction is output to a boiler whose priority is set in advance and which is later. Therefore, if an abnormality occurs in the boiler during combustion and the safety device is activated to stop the boiler, the combustion instruction is output to the boiler with the lower priority based on the alarm signal (e 3 ). It has become.
さらに、この発明では、前記警報信号発生手段（8A）
〜（8D）の設定により、ボイラを停止させるほど危険な
状態ではないが、その兆候を検出し異常を予知した場合
には、そのボイラの燃焼順位を下げ安全を期しながら負
荷対応させることができる。通常ボイラ装置では、たと
えば、ボイラ伝熱管の内面に給水中の硬度成分がスケー
ルとして付着し、熱伝達を阻害するのを防ぐために、伝
熱管温度測定用のセンサが取付けてある。このような構
成において、ボイラ装置がある設定温度を越えるように
なったらスケールの付着過多と判断して缶内洗浄がおこ
なわれる。このセンサによって検出した温度が、前記設
定温度を越えるようになっても、この数値は安全サイド
の数値であるので、すぐさまボイラを停止させるほど危
険な状態ではない。このような場合、ボイラの異常兆候
として予知検出し、警報信号を発生するように予め設定
しておくことができる。Further, in the present invention, the alarm signal generating means (8A)
By setting ~ (8D), it is not dangerous enough to stop the boiler, but if you detect the sign and predict an abnormality, you can lower the combustion order of the boiler and handle the load while keeping safety. . In a normal boiler device, for example, a sensor for measuring the temperature of the heat transfer tube is attached in order to prevent the hardness component in the feed water from adhering to the inner surface of the boiler heat transfer tube as a scale and hindering heat transfer. In such a configuration, if the boiler device exceeds a certain set temperature, it is determined that the scale is excessively attached and the inside of the can is cleaned. Even if the temperature detected by this sensor exceeds the set temperature, since this value is on the safe side, it is not in a dangerous state as soon as the boiler is stopped. In such a case, it can be set in advance so as to detect the abnormality as a sign of the boiler abnormality and generate an alarm signal.
以上のように、この発明は、多缶設置ボイラシステム
において、各ボイラに個別に設けた警報信号発生手段に
よって、各ボイラの異常発生あるいは異常兆候を検出し
て、異常ボイラを判別し、台数制御器に予め設定されて
いる燃焼優先順位を越えて前記異常ボイラにかえ他の燃
焼可能なボイラを速やかにバックアップ起動させるよう
にしたことにより、多缶設置ボイラシステムにおける急
激な圧力低下、および圧力低下にともなうハンチングを
回避し、負荷に対して迅速に且つ良好に応答し得る点に
おいてきわめて実効の高いものであるといえる。As described above, the present invention, in a multi-can installation boiler system, detects an abnormality occurrence or an abnormality sign of each boiler by an alarm signal generating means provided individually for each boiler, determines the abnormal boiler, and controls the number of units. A rapid decrease in pressure and a decrease in pressure in a multi-can installed boiler system by promptly starting backup of another combustible boiler instead of the abnormal boiler beyond the combustion priority set in advance in the reactor It can be said that it is extremely effective in that it can avoid hunting due to the above and can respond quickly and satisfactorily to a load.
図面は、この発明によるボイラの自動台数制御方法にお
いて、４台のボイラを台数制御する具体的な実施例を示
す概略的ブロック線図である。 （1A）〜（1D）……ボイラ （２）……スチームヘッダ （４）……圧力調節器 （５）……台数制御器 （７）……演算部 （8A）〜（8D）……警報信号発生手段 （10）……異常ボイラ判別部The drawing is a schematic block diagram showing a specific embodiment for controlling the number of four boilers in the method for automatically controlling the number of boilers according to the present invention. (1A) to (1D) …… Boiler (2) …… Steam header (4) …… Pressure regulator (5) …… Unit controller (7) …… Computing unit (8A) to (8D) …… Alarm Signal generation means (10) …… Abnormal boiler discrimination unit
Claims (1)
荷量に応じて必要台数のボイラを順次燃焼に移行させ、
負荷変動があればその負荷変動に合わせてボイラを燃焼
・停止せしめる台数制御器を有するものにおいて、前記
各ボイラ側に、それぞれ異常を検知して警報信号を出力
する警報信号発生手段を設け、前記各ボイラに対して燃
焼制御信号を出力する台数制御器側に、前記警報信号発
生手段からの警報信号に応答して、前記警報信号を発し
た異常ボイラを判別する異常ボイラ判別部および前記異
常ボイラ判別部によって判別される異常ボイラ以外の燃
焼可能なボイラに対して燃焼制御信号を出力する演算部
とを設け、異常ボイラにかえて燃焼可能なボイラをバッ
クアップ起動させるようにしたことを特徴とするボイラ
の自動台数制御装置。1. A plurality of boilers that are individually activated are installed, and a required number of boilers are sequentially switched to combustion according to the load amount.
In the case where there is a unit number controller that burns and stops the boiler according to the load fluctuation if there is a load fluctuation, each of the boilers side is provided with an alarm signal generating means for detecting an abnormality and outputting an alarm signal, An abnormal boiler discriminating unit for discriminating an abnormal boiler that has issued the alarm signal in response to an alarm signal from the alarm signal generating means on the unit controller side that outputs a combustion control signal to each boiler, and the abnormal boiler. It is characterized in that a computing unit that outputs a combustion control signal to a combustible boiler other than the abnormal boiler that is discriminated by the discriminating unit is provided, and that the combustible boiler is activated as a backup instead of the abnormal boiler. Boiler automatic number control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62292842A JP2544948B2 (en) | 1987-11-19 | 1987-11-19 | Boiler automatic number control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62292842A JP2544948B2 (en) | 1987-11-19 | 1987-11-19 | Boiler automatic number control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01134114A JPH01134114A (en) | 1989-05-26 |
| JP2544948B2 true JP2544948B2 (en) | 1996-10-16 |
Family
ID=17787069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62292842A Expired - Lifetime JP2544948B2 (en) | 1987-11-19 | 1987-11-19 | Boiler automatic number control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544948B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0712304A (en) * | 1993-06-24 | 1995-01-17 | Miura Co Ltd | Method for controlling the number of thermal devices |
| JP4865269B2 (en) * | 2005-07-19 | 2012-02-01 | 三菱重工業株式会社 | Combined boiler system and operation method thereof |
| JP2007093070A (en) * | 2005-09-28 | 2007-04-12 | Miura Co Ltd | Operation control method for multi-can installed boiler and multi-can installed boiler system |
| JP6028608B2 (en) * | 2013-02-14 | 2016-11-16 | 三浦工業株式会社 | Boiler system |
| JP6580340B2 (en) * | 2015-02-25 | 2019-09-25 | 株式会社サムソン | Multi-can boiler |
| JP2018105519A (en) * | 2016-12-22 | 2018-07-05 | 三浦工業株式会社 | Boiler system |
| JP2020159573A (en) * | 2019-03-25 | 2020-10-01 | 三浦工業株式会社 | Boiler control device and boiler system |
| CN110056897A (en) * | 2019-04-01 | 2019-07-26 | 山东博然电力科技有限公司 | A kind of flue gas heat-exchange unit switching device suitable for two boilers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641801B2 (en) * | 1984-02-09 | 1994-06-01 | 三浦工業株式会社 | Boiler automatic number control system |
-
1987
- 1987-11-19 JP JP62292842A patent/JP2544948B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01134114A (en) | 1989-05-26 |
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