JPH0721324B2 - Boiler exhaust gas temperature measuring device - Google Patents
Boiler exhaust gas temperature measuring deviceInfo
- Publication number
- JPH0721324B2 JPH0721324B2 JP60262129A JP26212985A JPH0721324B2 JP H0721324 B2 JPH0721324 B2 JP H0721324B2 JP 60262129 A JP60262129 A JP 60262129A JP 26212985 A JP26212985 A JP 26212985A JP H0721324 B2 JPH0721324 B2 JP H0721324B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- boiler
- gas temperature
- temperature
- combustion
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 33
- 230000010354 integration Effects 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 36
- 238000004140 cleaning Methods 0.000 description 15
- 239000004071 soot Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、ボイラーの適切な掃除時期の決定を行え
る、ボイラーの排ガス温度計測装置に関するものであ
る。TECHNICAL FIELD The present invention relates to an exhaust gas temperature measuring device for a boiler, which can determine an appropriate cleaning time for the boiler.
一般に、ボイラーは、長時間運転していると、伝熱管の
外側にススが、内側にスケールが付着し、それらの付着
量が増大するとボイラー効率が大きく低下する。従っ
て、ボイラーの伝熱管を定期的に掃除してやる必要があ
る。従来、ボイラーにおいて一般的に行われている掃除
時期の決定方式は、ボイラー効率を計算し、ボイラー効
率が所定値以下に低下したかどうかによるものであっ
た。Generally, when a boiler is operated for a long time, soot is attached to the outside of the heat transfer tube and scale is attached to the inside thereof, and if the amount of the attachment is increased, the boiler efficiency is greatly reduced. Therefore, it is necessary to regularly clean the heat transfer tubes of the boiler. Conventionally, the method of determining the cleaning time, which is generally used in the boiler, is to calculate the boiler efficiency and determine whether or not the boiler efficiency has dropped below a predetermined value.
このボイラー効率の測定方法としては、ボイラーに付帯
する各計測器の値を日誌に記録し、その値の変化を見て
ボイラー効率を把握管理していた。この方法では人手を
要し、記帳には正確さを必要とするといった煩わしさを
伴う上に、ボイラー効率の変化を把握するのに時間を要
するといった問題があった。As a method of measuring the boiler efficiency, the value of each measuring instrument attached to the boiler was recorded in a diary, and the boiler efficiency was grasped and managed by observing the change in the value. This method has a problem in that it requires manpower, the bookkeeping requires accuracy, and it takes time to grasp the change in the boiler efficiency.
そこで、近年では、ボイラーの各計測器からの信号をも
とにコンピューターにて一定の計算式よりボイラー効率
を算出するボイラーの自動管理装置が採用されるに至っ
た。即ち、ボイラーに給水流量計、油流量計等の各種計
測器を特別に設け、これら各計測器からの信号をもとに
コンピューターにて一定の計算式にてボイラー効率を算
出する。しかし、これらの計測器は非常に高価であり、
小型ボイラーでは他部品に比べ割高であるという問題が
あった。Therefore, in recent years, a boiler automatic management device has been adopted, which calculates the boiler efficiency from a computer based on a signal from each measuring instrument of the boiler according to a certain calculation formula. That is, various measuring instruments such as a feed water flow meter and an oil flow meter are specially installed in the boiler, and the boiler efficiency is calculated by a computer based on a signal from each of these measuring instruments according to a certain calculation formula. But these instruments are very expensive,
The problem with small boilers is that they are more expensive than other parts.
このため、ボイラーの排ガス温度を測定し、この排ガス
温度から簡易的にボイラー効率を算出してボイラーの掃
除時期を決定することも考えられるが、排ガス温度だけ
からボイラーの適切な掃除時期を決定することは困難で
あり、徒にボイラーを停止して、掃除を行うことにつな
がり、ボイラーに接続してある蒸気（温水）使用設備の
運転を不可能にしてしまう。Therefore, it is conceivable to measure the exhaust gas temperature of the boiler and determine the boiler cleaning time by simply calculating the boiler efficiency from this exhaust gas temperature, but determine the appropriate cleaning time for the boiler only from the exhaust gas temperature. This is difficult and leads to the need to shut down the boiler and perform cleaning, making it impossible to operate the steam (hot water) equipment connected to the boiler.
この発明は、上記の課題に留意してなされたもので、ボ
イラーの掃除時期の判定を簡易に、しかもきめ細かく行
えるボイラーの排ガス温度計測装置を提供するこを目的
とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide an exhaust gas temperature measuring device for a boiler, which can easily and precisely determine the cleaning time of the boiler.
上記目的を達成するために、この発明は、ボイラーに排
ガス温度検出器と排ガス温度記録装置を設け、前記排ガ
ス温度記録装置が、前記排ガス温度検出器からの温度信
号を受けて測定期間中の最高温度を記憶する最高温度記
憶回路と、燃焼装置稼動時に前記排ガス温度検出器の検
出温度Ｔが予め設定した設定温度T0を超過した回数を積
算する超過回数積算回路と、燃焼装置の燃焼回数を積算
記憶する燃焼回数積算回路と、これら最高温度記憶回
路、超過回数積算回路及び燃焼回数回路にそれぞれ記憶
された最高温度、超過回数及び燃焼回数を出力する出力
回路とを具備したことを特徴とするものである。In order to achieve the above object, the present invention provides a boiler with an exhaust gas temperature detector and an exhaust gas temperature recording device, wherein the exhaust gas temperature recording device receives the temperature signal from the exhaust gas temperature detector and is the highest during the measurement period. A maximum temperature storage circuit that stores the temperature, an excess number integration circuit that integrates the number of times the detected temperature T of the exhaust gas temperature detector exceeds a preset temperature T 0 when the combustion device is operating, and a combustion number of the combustion device It is characterized by comprising a combustion frequency integrating circuit for integrating and storing, and an output circuit for outputting the maximum temperature, the excess frequency and the combustion frequency respectively stored in the maximum temperature storage circuit, the excess frequency integrating circuit and the combustion frequency circuit. It is a thing.
以下、この発明を図面に基づいて説明する。第１図はこ
の発明における一実施例の説明図であり、第２図はこの
発明における排ガス温度計測装置の作動説明図である。
ボイラー（１）は、燃焼装置（６）および煙道（７）を
備え、この煙道（７）はボイラー（１）における熱交換
後の排ガスが通る。前記煙道（７）には、煙道（７）の
排ガス温度を検出すべく排ガス温度検出器（２）が設け
られている。この排ガス温度検出器（２）は、例えば熱
電対あるいはサーミスター等の信号出力子を備えてい
る。The present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of an embodiment of the present invention, and FIG. 2 is an operation explanatory view of an exhaust gas temperature measuring device in the present invention.
The boiler (1) comprises a combustion device (6) and a flue (7) through which the exhaust gas after heat exchange in the boiler (1) passes. The flue (7) is provided with an exhaust gas temperature detector (2) for detecting the exhaust gas temperature of the flue (7). The exhaust gas temperature detector (2) is provided with a signal output element such as a thermocouple or a thermistor.
排ガス温度記録装置（５）は、最高温度記憶回路
（３）、超過回数積算回路（４）、燃焼回数積算回路
（８）、および出力回路（９）を備えている。前記最高
温度記憶回路（３）は、前記排ガス温度検出器（２）か
らの温度信号を受信し、測定期間中の排ガスの最高温度
を記憶するように構成されている。前記超過回数積算回
路（４）は、予め設定温度T0が記憶されており、前記燃
焼装置（６）からの稼動開始信号があればその燃焼装置
稼動期間中、前記設定温度T0と前記排ガス温度検出器
（２）からの検出温度Ｔとを比較し、Ｔ＞T0の状態を検
出すれば前記燃焼装置（６）からの稼動開始信号ごとに
超過回数を１回として記憶するように構成されている。
ここで設定温度T0は、ボイラー伝熱面にススあるいはス
ケールが付着して伝熱効率が低下し伝熱面の清掃を要す
るようになった時の排ガス温度、あるいは排ガス温度か
らボイラー効率を算出した際のボイラーのユーザーに保
証するボイラー効率に相当する温度等、ボイラー固有の
値が選択される。The exhaust gas temperature recording device (5) includes a maximum temperature storage circuit (3), an excess number integration circuit (4), a combustion number integration circuit (8), and an output circuit (9). The maximum temperature storage circuit (3) is configured to receive the temperature signal from the exhaust gas temperature detector (2) and store the maximum temperature of the exhaust gas during the measurement period. The excess temperature integration circuit (4) stores a preset temperature T 0 in advance, and if there is an operation start signal from the combustion device (6), the set temperature T 0 and the exhaust gas are exhausted during the combustion device operation period. When the temperature T detected by the temperature detector (2) is compared and the condition of T> T 0 is detected, the excess number is stored as one for each operation start signal from the combustion device (6). Has been done.
Here, the set temperature T 0 is the exhaust gas temperature when soot or scale adheres to the boiler heat transfer surface and the heat transfer efficiency is reduced and cleaning of the heat transfer surface becomes necessary, or the boiler efficiency was calculated from the exhaust gas temperature. In this case, a boiler-specific value such as a temperature corresponding to the boiler efficiency guaranteed to the user of the boiler is selected.
前記燃焼回数積算回路（８）は、前記燃焼装置（６）の
稼動回数を積算記憶するように構成されている。また、
これらの最高温度記憶回路（３）、超過回数積算回路
（４）及び燃焼回数積算回路（８）にそれぞれ記憶され
た最高温度、超過回数及び燃焼回数は、前記出力回路
（９）にて対比させて任意に出力するようになってい
る。The combustion number integration circuit (8) is configured to integrate and store the number of times the combustion device (6) has been operated. Also,
The maximum temperature, the excess frequency and the combustion frequency stored in the maximum temperature storage circuit (3), the excess frequency integration circuit (4) and the combustion frequency integration circuit (8) are compared by the output circuit (9). Output arbitrarily.
以上の構成において、その作用について説明する。ボイ
ラー（１）を稼動状態にすると、蒸気負荷要求に応じて
燃焼装置（６）がON−OFF稼動し、燃焼ガスはボイラー
（１）の伝熱面で熱交換を行い低温となり排ガスとなっ
て煙道（７）より系外に排出される。このとき、排ガス
温度記録装置（５）は、排ガス温度検出器（２）からの
温度信号を受けて最高温度記憶回路（３）の働きにより
最高温度T1,T2,T3と更新記憶し、一方、燃焼装置（６）
からの稼動開始信号を受けて燃焼回数積算回路（８）の
働きにより燃焼回数（n1,n2,n3,n4）を記憶するととも
に、超過回数積算回路（４）の働きにより排ガス温度検
出器（２）から検出温度Ｔと設定温度T0とを比較演算
し、Ｔ＞T0の状態が現出すれば超過回数（N1,N2,N3,
N4）として燃焼装置稼動開始信号受信ごとに積算記憶す
る。そして必要に応じて、出力回路（９）より排ガスの
最高温度T3、設定温度T0に対する超過回数N4、燃焼回数
n4を出力表示する。また、前記排ガス温度記録装置
（５）に排ガス温度からのボイラー効率簡易計算式を組
み込んでおけば、ボイラー効率も算出して表示すること
ができる。The operation of the above configuration will be described. When the boiler (1) is put into operation, the combustion device (6) is turned on and off according to the steam load demand, and the combustion gas undergoes heat exchange on the heat transfer surface of the boiler (1) to become a low temperature and become exhaust gas. It is discharged from the flue (7) to the outside of the system. At this time, the exhaust gas temperature recording device (5) receives the temperature signal from the exhaust gas temperature detector (2) and updates and stores the maximum temperatures T 1 , T 2 , T 3 by the operation of the maximum temperature storage circuit (3). , Meanwhile, the combustion device (6)
In response to the operation start signal from the engine, the number of combustions (n 1 , n 2 , n 3 , n 4 ) is stored by the function of the number-of-burns integration circuit (8), and the exhaust gas temperature is stored by the function of the excess number integration circuit (4) The detected temperature T and the set temperature T 0 are compared and calculated from the detector (2), and if the state of T> T 0 appears, the number of excess times (N 1 , N 2 , N 3 ,
Integrating stored for each combustion device operation start signal received as N 4). Then, if necessary, the maximum temperature T 3 of the exhaust gas from the output circuit (9), the number N 4 of exceeding the set temperature T 0 , the number of combustions
Print n 4 output. Further, if a simple calculation formula for boiler efficiency from exhaust gas temperature is incorporated in the exhaust gas temperature recording device (5), the boiler efficiency can also be calculated and displayed.
上記の排ガスの最高温度T3、設定温度T0に対する超過回
数N4、燃焼回数n4に基づいて、ボイラー伝熱面の掃除の
必要性（緊急度）を的確に判定することができる。例え
ば、最高排ガス温度が高い場合は、通常、緊急に掃除が
必要と考えられるが、燃焼回数に対する設定温度超過回
数の割合、即ち超過率が低ければ、燃焼装置のON−OFF
サイクル時間が短いことが推され、その場合は、着火時
の衝撃によるススの剥離、飛散等の自浄作用が期待でき
る。従って、緊急に掃除を行う必要性は低く、ボイラー
を休止させる時間帯を選択して掃除を行うことができ
る。The necessity (urgent level) of cleaning the boiler heat transfer surface can be accurately determined based on the maximum temperature T 3 of the exhaust gas, the number of times N 4 of exceeding the set temperature T 0 , and the number of times of combustion n 4 . For example, when the maximum exhaust gas temperature is high, it is usually considered that cleaning is urgently required, but if the ratio of the number of times the set temperature exceeds the number of combustion, that is, if the excess rate is low, the combustion device is turned ON-OFF.
It is presumed that the cycle time is short, and in that case, a self-cleaning action such as separation of soot and scattering due to impact during ignition can be expected. Therefore, the necessity of urgent cleaning is low, and cleaning can be performed by selecting a time period in which the boiler is stopped.
上述の如く構成されるこの発明によれば、最高排ガス温
度、排ガス温度の設定温度超過回数及び燃焼回数を記憶
し、これらを出力回路から出力するようにしたので、ボ
イラー伝熱面の掃除の必要性（緊急度）を総合的に判定
することができる。即ち、最高排ガス温度に加えて設定
温度超過回数及び燃焼回数を加味してボイラーの伝熱面
のスス付着状況等をよりきめ細かく判定することがで
き、これによりボイラーの掃除時期をより容易に、かつ
適切に決定することができる。従って、掃除の緊急度が
低い場合にはボイラーを休止させる時間帯を選択して掃
除を行うことができ、ボイラーを徒に停止することが無
くなり、ボイラーに接続してある蒸気（温水）使用設備
の運転停止といった事態を減少させることができる。ま
た、ボイラーの掃除時期の判定基準となるボイラー効率
を測定するための給水流量計、油量計等の高価な各種計
測器を必要とすることがなく、安価にして簡易にボイラ
ーの掃除時期を決定することができる等多大なる効果を
発揮する。According to the present invention configured as described above, the maximum exhaust gas temperature, the number of times the exhaust gas temperature exceeds the set temperature, and the number of combustions are stored and output from the output circuit. Therefore, it is necessary to clean the boiler heat transfer surface. Gender (urgency) can be comprehensively determined. That is, in addition to the maximum exhaust gas temperature, it is possible to more finely determine the soot adhesion state of the heat transfer surface of the boiler by taking into account the number of times the set temperature has been exceeded and the number of combustions. Can be properly determined. Therefore, when the urgency of cleaning is low, it is possible to perform cleaning by selecting the time period when the boiler is stopped, there is no need to stop the boiler forcibly, and steam (hot water) use equipment connected to the boiler is used. It is possible to reduce the situation such as the operation stop of the. In addition, it does not require expensive measuring instruments such as a feed water flow meter and oil meter to measure the boiler efficiency, which is the criterion for determining the cleaning time of the boiler. It has a great effect that it can be decided.
第１図はこの発明における一実施例の説明図、第２図は
この発明における排ガス温度計測装置の作動説明図であ
る。 （１）……ボイラー、（２）……排ガス温度検出器 （３）……最高温度記憶回路、（４）……超過回数積算
回路 （５）……排ガス温度記録装置、（６）……燃焼装置 （７）……煙道、（８）……燃焼回数積算回路 （９）……出力回路FIG. 1 is an explanatory view of an embodiment of the present invention, and FIG. 2 is an operation explanatory view of an exhaust gas temperature measuring device in the present invention. (1) …… Boiler, (2) …… Exhaust gas temperature detector (3) …… Maximum temperature memory circuit, (4) …… Excess count integration circuit (5) …… Exhaust gas temperature recorder, (6) …… Combustion device (7): Flue, (8): Combustion frequency integration circuit (9): Output circuit
Claims (1)
と排ガス温度記録装置（５）を設け、前記排ガス温度記
録装置（５）が、前記排ガス温度検出器（２）からの温
度信号を受けて測定期間中の最高温度を記憶する最高温
度記憶回路（３）と、燃焼装置（６）稼動時に前記排ガ
ス温度検出器（２）の検出温度Ｔが予め設定した設定温
度T0を超過した回数を積算する超過回数積算回路（４）
と、燃焼装置（６）の燃焼回数を積算記憶する燃焼回数
積算回路（８）と、これらの最高温度記憶回路（３）、
超過回数積算回路（４）及び燃焼回数積算回路（８）に
それぞれ記憶された最高温度、超過回数及び燃焼回数を
出力する出力回路（９）とを具備したことを特徴とする
ボイラーの排ガス温度計測装置。1. An exhaust gas temperature detector (2) for a boiler (1)
And an exhaust gas temperature recording device (5), and the exhaust gas temperature recording device (5) receives a temperature signal from the exhaust gas temperature detector (2) and stores the maximum temperature during the measurement period ( 3) and an excess number integration circuit (4) that integrates the number of times the detected temperature T of the exhaust gas temperature detector (2) exceeds a preset temperature T 0 when the combustion device (6) is operating.
A combustion number integration circuit (8) for integrating and storing the number of combustions of the combustion device (6), and a maximum temperature storage circuit (3) for these.
Exhaust gas temperature measurement of a boiler, comprising: an output circuit (9) for outputting the maximum temperature, the excess frequency and the combustion frequency stored in the excess frequency integration circuit (4) and the combustion frequency integration circuit (8), respectively. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60262129A JPH0721324B2 (en) | 1985-11-20 | 1985-11-20 | Boiler exhaust gas temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60262129A JPH0721324B2 (en) | 1985-11-20 | 1985-11-20 | Boiler exhaust gas temperature measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62123204A JPS62123204A (en) | 1987-06-04 |
| JPH0721324B2 true JPH0721324B2 (en) | 1995-03-08 |
Family
ID=17371452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60262129A Expired - Lifetime JPH0721324B2 (en) | 1985-11-20 | 1985-11-20 | Boiler exhaust gas temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721324B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02208463A (en) * | 1989-02-08 | 1990-08-20 | Sanyo Electric Co Ltd | Direct firing generator |
| JP4679873B2 (en) * | 2004-10-18 | 2011-05-11 | 株式会社サムソン | Exhaust heat boiler that detects abnormal exhaust gas outlet temperature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5344602B2 (en) * | 1973-05-21 | 1978-11-30 |
-
1985
- 1985-11-20 JP JP60262129A patent/JPH0721324B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62123204A (en) | 1987-06-04 |
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