JPS5949420A - Controlling method of soot blower - Google Patents
Controlling method of soot blowerInfo
- Publication number
- JPS5949420A JPS5949420A JP15742782A JP15742782A JPS5949420A JP S5949420 A JPS5949420 A JP S5949420A JP 15742782 A JP15742782 A JP 15742782A JP 15742782 A JP15742782 A JP 15742782A JP S5949420 A JPS5949420 A JP S5949420A
- Authority
- JP
- Japan
- Prior art keywords
- soot blower
- sensor
- signals
- heating surface
- temperature
- 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
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はスートブロワの制御方法に係り、特にスート
ブロワの作動時期を適切に制御して伝熱面の清掃に過不
足のないようスートブロワを作動させる方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of controlling a soot blower, and more particularly to a method of operating a soot blower so as to properly control the operating timing of the soot blower so as to properly clean a heat transfer surface.
例えばボイラにおいて、伝熱面に対しては時間の経過と
共に煤塵、灰等のダスト分が伺着し伝熱率を低下させる
ので、スートブロワを用Ｉ／）で付着したダストを除去
するようにしている。For example, in a boiler, dust such as soot and ash accumulates on the heat transfer surface over time and reduces the heat transfer rate, so a soot blower is used to remove the adhering dust. There is.
従来はこのスートブロワの操作は手動により行なってい
たが発電所用の大型ボイラ等にあろてはスートブロワの
設置本数は数十本にもなり手動による操作は到底不可能
である。このため、各スートブロワをタイマーに接続し
、一定時間毎にスートブロワを作動させる方法が広く採
用されている。この方法は制御が単純であり、かつ省力
化もぶ成てきる反面次の如き問題がある。Conventionally, this soot blower was operated manually, but in the case of large boilers for power plants, etc., the number of soot blowers installed is several dozen, and manual operation is completely impossible. For this reason, a method is widely adopted in which each soot blower is connected to a timer and the soot blower is operated at regular intervals. Although this method has simple control and saves labor, it has the following problems.
すなわち、ダストの付着状態は必ずしも一定ではなく２
．ボイラの負荷や使用する燃料の性状によって変化する
ものであるが、タイマーによって定期的にスートブロワ
を作動させる方法ではこの変化に対応することができず
、多量のダストがイく１着しているにもか＼わらずスー
トブロワが作動しなかったり、反対に殆んどダスト付着
がないにもか＼わらずスートブロワが作動して噴射媒体
を無駄に使用する等の問題がある。In other words, the state of dust adhesion is not necessarily constant;
．． This changes depending on the load on the boiler and the properties of the fuel used, but the method of periodically activating the soot blower using a timer cannot cope with these changes, and a large amount of dust often accumulates. There are problems such as the soot blower not operating in spite of the fact that the soot blower does not operate, or conversely, the soot blower operating even though there is almost no dust adhesion, resulting in wasteful use of the injection medium.
この発明の目的は上述した問題点を除去し、スートブロ
ワを過不足なく作動させることができるスートブロワ制
御方法を提供することにある。An object of the present invention is to provide a soot blower control method that eliminates the above-mentioned problems and allows the soot blower to be operated properly.
要するにこの発明は検知器晴のセンサにより伝熱面に対
するダスト４１着状態を検知し、このセンサの検知結果
に基づくスートブロワ作動信号をタイマーに優先させる
ことによりスートブロワの作動時期を適正に制御するス
ートブロワ制御方法である。In short, this invention detects the state of dust 41 adhering to the heat transfer surface using a sensor, and controls the soot blower to appropriately control the timing of soot blower operation by prioritizing the soot blower operation signal based on the detection result of this sensor over a timer. It's a method.
以下この発明の実施例を図面により説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図において符号１ないし５はスートブロワを示す。In FIG. 1, numerals 1 to 5 indicate soot blowers.
６ないし１０はこれらスートブロワに対して噴射媒体を
供給する管路、１１ないし１５はこれら管路に設けた弁
である。さらに１６ないし２０は各スートブロワ１ない
し５の近傍に配置したセンサであり、このセンサは例え
ば伝熱管内の内部流体の温度を泪測する温度計（以Ｆこ
のセンサを湿度計として説明する）とする。２１は記憶
と指令信号を発する制御箱であり、各センサは内部流体
の温度を計測し、この計測結果を信号に変換して常時制
御箱２１に人力する。制御箱２１は伝熱管の内部流体湿
度を検知し、かつ別に入力された燃焼ガス温度信号Ｔと
比較する口とにより伝熱面の伝熱率を算出し間接的にダ
ストの何着状態を検知する。この検知結果にＪ、（づき
各伝熱面の清掃時期を算出し、清掃ずへき伝熱面に位置
するスートブロワに対して作動信号を発する。この作動
信号により対応するスートブロワに接続する媒体噴射管
の弁は開となり、噴射媒体を噴射する。この場合、作動
を完了したスートブロワに対してタイマー２２によりス
ートブロワ作動信号が発せられても、センサの信号に基
づいて算出したダストの付着状態が清掃を行なう程の量
に達していない場合には制御箱２１はこの作動信号をク
リアしてスートブロワが不必要に作動するのを防止する
。Numerals 6 to 10 are conduits for supplying injection medium to these soot blowers, and 11 to 15 are valves provided in these conduits. Furthermore, 16 to 20 are sensors arranged near each of the soot blowers 1 to 5, and these sensors may be, for example, a thermometer (hereinafter this sensor will be explained as a hygrometer) that measures the temperature of the internal fluid in the heat transfer tube. do. Reference numeral 21 denotes a control box that emits memory and command signals. Each sensor measures the temperature of the internal fluid, converts the measurement results into signals, and constantly inputs the signals to the control box 21. The control box 21 detects the internal fluid humidity of the heat transfer tube, and calculates the heat transfer rate of the heat transfer surface by comparing it with the combustion gas temperature signal T input separately, and indirectly detects the state of dust deposition. do. Based on this detection result, J calculates the cleaning timing for each heat transfer surface and issues an activation signal to the soot blower located on the heat transfer surface that is not cleaned.This activation signal causes a medium injection pipe connected to the corresponding soot blower. The valve is opened and the injection medium is injected.In this case, even if the soot blower operation signal is issued by the timer 22 to the soot blower that has completed its operation, the dust adhesion state calculated based on the sensor signal indicates that cleaning is not possible. If the amount of soot blower has not been reached, the control box 21 clears this activation signal to prevent the soot blower from operating unnecessarily.
次に、タイマー２２により作動信号が発せられた時点に
おいて、対応するスートブロワ近傍のセンサの信吋に基
づくダス）（”Ｊ着状態が基準値以」二となっていたな
らば制御箱２Ｊはこのタイマーの作動信号により対応す
るスートブロワを作動し清掃を行なう。Next, at the time when the activation signal is issued by the timer 22, if the "J arrival state is equal to or higher than the reference value" (2) based on the signal from the sensor near the corresponding soot blower, the control box 2J The corresponding soot blower is activated by the timer activation signal to perform cleaning.
なお、前記センサを排ガス温度を計測するセンサとし、
排ガス温度により、または排ガス温度と伝熱？４・内部
流体温度との温度差により、ダ図中符号２３は排ガス温
度を検知するセンサである。Note that the sensor is a sensor that measures exhaust gas temperature,
By exhaust gas temperature or exhaust gas temperature and heat transfer? 4. Reference numeral 23 in the figure is a sensor that detects the exhaust gas temperature based on the temperature difference with the internal fluid temperature.
この発明を実施することによりセンサて検知したダスト
刊着状態に基づいて発する作動信号をタイマーの作動信
号に優先させるのでスートブロワを伝熱面清掃用として
過不足なく使用できる。By carrying out the present invention, the activation signal issued based on the state of dust accumulation detected by the sensor is given priority over the activation signal of the timer, so that the soot blower can be used for cleaning the heat transfer surface without excess or deficiency.
第１図はこの発明に係る方法を実施するためのスートブ
ロワ制御系統図である。FIG. 1 is a soot blower control system diagram for implementing the method according to the present invention.
Claims (1)
るセンサを配置し、このセンサにより伝熱面に対するダ
ストの伺着状態を検知しテスートフロワの作動信号を発
し、この作動 ３゜信号をタイマーによる作動信号に優
先させることを特徴とするスートブロワの制御方法。 ２、前記センサを伝熱管内部の流体の温度を検知する温
度検知器とすることを特徴とする特許請求の範囲第１項
記載のスートブロワの制御方法。 ３、温度計測用のセンサを排ガス温度を計測するものと
することを特徴とする特許請求の範囲第１項又は第２項
記載のスートブロワの制御方法。 ４、火炉内と燃焼装置出口との間の風圧差を信号として
加えることを特徴とする特許請求の範囲第１項ないし第
３項いずれかに記載のスートブロワの制御方法。 ５、前記制御を記憶と指令信号を発する制御箱により前
記優先順と作動とを制御することを特徴とする特許請求
の範囲第１項ないし第４項のいずれかに記載のスートブ
ロワの制御方法０[Claims] 1. A sensor for measuring temperature is arranged in or near the heat transfer tube of the combustion device, and this sensor detects the state of dust adhering to the heat transfer surface and issues an activation signal for the test floor. A method of controlling a soot blower characterized by giving priority to an operating 3° signal over an operating signal from a timer. 2. The soot blower control method according to claim 1, wherein the sensor is a temperature detector that detects the temperature of the fluid inside the heat transfer tube. 3. The soot blower control method according to claim 1 or 2, characterized in that the temperature measuring sensor is a sensor for measuring exhaust gas temperature. 4. A soot blower control method according to any one of claims 1 to 3, characterized in that a wind pressure difference between the inside of the furnace and the outlet of the combustion device is added as a signal. 5. The soot blower control method according to any one of claims 1 to 4, characterized in that the priority order and operation are controlled by a control box that stores the control and issues a command signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15742782A JPS5949420A (en) | 1982-09-11 | 1982-09-11 | Controlling method of soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15742782A JPS5949420A (en) | 1982-09-11 | 1982-09-11 | Controlling method of soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5949420A true JPS5949420A (en) | 1984-03-22 |
Family
ID=15649394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15742782A Pending JPS5949420A (en) | 1982-09-11 | 1982-09-11 | Controlling method of soot blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5949420A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144213A (en) * | 1984-08-09 | 1986-03-03 | Mitsubishi Heavy Ind Ltd | Soot blowing device for heat exchanger |
| JPS6148236U (en) * | 1984-08-28 | 1986-04-01 | ||
| JPH02208463A (en) * | 1989-02-08 | 1990-08-20 | Sanyo Electric Co Ltd | Direct firing generator |
| US5530987A (en) * | 1992-07-24 | 1996-07-02 | The Babcock & Wilcox Company | Condensate drain controller |
| EP1760401A3 (en) * | 2005-08-29 | 2009-03-04 | CMV Systems GmbH | Method and device for monitoring the building of deposits in combustion chambers |
| WO2022181053A1 (en) * | 2021-02-26 | 2022-09-01 | 三菱重工業株式会社 | Cleaning device and heat transfer tube cleaning method |
-
1982
- 1982-09-11 JP JP15742782A patent/JPS5949420A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6144213A (en) * | 1984-08-09 | 1986-03-03 | Mitsubishi Heavy Ind Ltd | Soot blowing device for heat exchanger |
| JPS6148236U (en) * | 1984-08-28 | 1986-04-01 | ||
| JPH02208463A (en) * | 1989-02-08 | 1990-08-20 | Sanyo Electric Co Ltd | Direct firing generator |
| US5530987A (en) * | 1992-07-24 | 1996-07-02 | The Babcock & Wilcox Company | Condensate drain controller |
| EP1760401A3 (en) * | 2005-08-29 | 2009-03-04 | CMV Systems GmbH | Method and device for monitoring the building of deposits in combustion chambers |
| US7607825B2 (en) | 2005-08-29 | 2009-10-27 | Cmv Systems Gmbh & Co. Kg | Method and apparatus for monitoring the formation of deposits in furnaces |
| WO2022181053A1 (en) * | 2021-02-26 | 2022-09-01 | 三菱重工業株式会社 | Cleaning device and heat transfer tube cleaning method |
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