JPH06201119A - Jet medium flow rate control method of soot blower - Google Patents
Jet medium flow rate control method of soot blowerInfo
- Publication number
- JPH06201119A JPH06201119A JP34847692A JP34847692A JPH06201119A JP H06201119 A JPH06201119 A JP H06201119A JP 34847692 A JP34847692 A JP 34847692A JP 34847692 A JP34847692 A JP 34847692A JP H06201119 A JPH06201119 A JP H06201119A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- amount
- lance
- pressure
- lance tube
- 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.)
- Withdrawn
Links
- 239000004071 soot Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007664 blowing Methods 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000003780 insertion Methods 0.000 claims description 29
- 230000037431 insertion Effects 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 239000002184 metal Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 239000004568 cement Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Incineration Of Waste (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はボイラ火炉，セメントキ
ルン，冷却装置，加熱炉，排ガスエコノマイザ等の抜差
型煤吹装置に適用される噴射媒体流量調整方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection medium flow rate adjusting method applied to a differential soot blowing device such as a boiler furnace, a cement kiln, a cooling device, a heating furnace and an exhaust gas economizer.
【０００２】[0002]
【従来の技術】図７は従来の抜差型煤吹装置の一例を示
す概念図である。蒸気や空気等，煤吹装置の噴射媒体
は、母管（１）から分岐した後、圧力調整弁（２）で一
定圧力に制御され、流量調整オリフィス（３），遮断弁
（４）を通ってランス管（５）に供給され、ランス管先
端のノズルからボイラ炉内に噴射されて伝熱管の表面に
堆積した煤，灰等を除去する。（６）は圧力検出器，
（７）は同圧力検出器（６）の後流から分岐して図示し
ない他のランス管に至る管路である。2. Description of the Related Art FIG. 7 is a conceptual diagram showing an example of a conventional slip-on type soot blowing device. The injection medium of the soot blowing device, such as steam and air, is branched from the mother pipe (1), controlled to a constant pressure by the pressure adjusting valve (2), and passes through the flow rate adjusting orifice (3) and the shutoff valve (4). Is supplied to the lance pipe (5) and is sprayed from the nozzle at the tip of the lance pipe into the boiler furnace to remove soot, ash and the like accumulated on the surface of the heat transfer pipe. (6) is a pressure detector,
Reference numeral (7) is a pipe path that branches from the wake of the pressure detector (6) to another lance pipe (not shown).
【０００３】[0003]
【発明が解決しようとする課題】ボイラの大型化に伴
い、ランス管の長さは１０ｍを越える長大なもの（１０
００ＭＷクラスのボイラでは１５〜１８ｍ位に達する）
となっている。ボイラ火炉内へランス管が挿入された長
さが短い間は、炉内での受熱量は少ないから、蒸気がラ
ンス管先端の噴射ノズルに至るまでに加熱されたとして
もその温度上昇は小さい。したがって、煤吹きのために
必要な蒸気量でランス管は十分冷却される。しかしラン
ス管の挿入長が極端に長くなった場合、蒸気等の噴射媒
体を一定圧力でランス管に供給する従来の方法では、蒸
気の受熱量が大きくなり、必要蒸気量は煤吹き効果では
なくランス管の冷却という観点から決定されて、煤や灰
を吹き飛ばすに必要な量を大幅に上まわる量の蒸気等
を、ランス管の冷却（焼損防止）のために流さざるを得
ない。しかしながら蒸気等の量を増加させると、蒸気等
が無駄になるのみならず、多量の蒸気（または空気）が
伝熱管の表面に吹きつけられるため、蒸気（または空
気）が吹きつけられた瞬間は過度に冷却され蒸気等が当
たらなくなると再びメタル温度が上昇することの繰返し
となり、熱疲労により材料が劣化する。With the increase in the size of boilers, the length of the lance tube becomes longer than 10 m (10
It reaches 15 to 18m in a 00MW class boiler.)
Has become. Since the amount of heat received in the furnace is small while the length of the lance tube inserted into the boiler furnace is short, the temperature rise is small even if the steam is heated up to the injection nozzle at the tip of the lance tube. Therefore, the lance tube is sufficiently cooled by the amount of steam required for soot blowing. However, when the insertion length of the lance pipe becomes extremely long, the conventional method of supplying the injection medium such as steam to the lance pipe at a constant pressure increases the amount of heat received by the steam, and the required amount of steam is not the soot blowing effect. The amount of steam or the like, which is determined from the viewpoint of cooling the lance pipe and greatly exceeds the amount required to blow off soot and ash, is forced to flow for cooling the lance pipe (preventing burnout). However, when the amount of steam is increased, not only is the steam wasted, but a large amount of steam (or air) is blown onto the surface of the heat transfer tube, so the moment the steam (or air) is blown When the metal is excessively cooled and steam or the like is not hit, the metal temperature rises again, and the material deteriorates due to thermal fatigue.
【０００４】ボイラが大形化するにつれ、上記のように
スートブロワのランス管は長くなり、冷却のための蒸気
等が増加して、蒸気による伝熱面の熱疲労が助長される
ことになるが、その傾向は炉壁から挿入長の短い区間に
おいて顕著となる。それは、蒸気が十分に加熱されない
うちに噴射されるため、蒸気の温度と伝熱面メタルの温
度差が大きいこと、および蒸気の温度が低いために比容
積が小さく、質量としても多量の蒸気が噴射されること
による。一番奥まで挿入した場合は蒸気の温度は高くな
り、ランス管のメタル温度が上昇するとともに、蒸気の
体積増加によりランス管内およびノズル部での圧力損失
が増加するため、噴射される蒸気の質量も図３中に点線
で示されるように減少してしまい、ランス管のメタル温
度が更に上昇することとなる。As the size of the boiler becomes larger, the lance tube of the soot blower becomes longer as described above, and the steam for cooling increases and the thermal fatigue of the heat transfer surface due to the steam is promoted. , The tendency becomes remarkable in the section where the insertion length is short from the furnace wall. Since the steam is injected before it is sufficiently heated, the temperature difference between the steam and the heat transfer surface metal is large, and the low steam temperature results in a small specific volume and a large amount of steam as mass. By being jetted. When it is inserted all the way in, the steam temperature rises, the metal temperature in the lance pipe rises, and the volume loss of the steam increases the pressure loss in the lance pipe and in the nozzle part. Also decreases as shown by the dotted line in FIG. 3, and the metal temperature of the lance tube further rises.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記従来の課
題を解決するために、ボイラ火炉内に挿入したランス管
に圧力調整弁を介して噴射媒体を送給する抜差型煤吹装
置において、上記ボイラ火炉内のガス温度と上記ランス
管の挿入長さとから上記ランス管の冷却に必要な噴射媒
体量を確保できるランス管入口の媒体圧力を演算すると
ともに、煤吹きに必要な噴射媒体量を確保できるランス
管入口の媒体圧力と上記の演算結果とを比較して、高い
方の媒体圧力を選び、その高い方の媒体圧力とランス管
入口で実測した媒体圧力とを比較して、実測した媒体圧
力の方が高ければ上記圧力調整弁を閉方向に操作し、実
測した媒体圧力の方が低ければ上記圧力調整弁を開方向
に操作することを特徴とする煤吹装置の噴射媒体流量制
御方法を提案するものである。In order to solve the above-mentioned conventional problems, the present invention provides a slip-on type soot blowing device for feeding an injection medium to a lance tube inserted in a boiler furnace through a pressure regulating valve. In, the gas pressure in the boiler furnace and the insertion length of the lance pipe are used to calculate the medium pressure at the lance pipe inlet that can secure the amount of the injection medium necessary for cooling the lance pipe, and the injection medium required for soot blowing Compare the medium pressure at the lance pipe inlet that can secure the amount and the above calculation result, select the higher medium pressure, compare the higher medium pressure and the medium pressure measured at the lance pipe inlet, If the measured medium pressure is higher, the pressure control valve is operated in the closing direction, and if the measured medium pressure is lower, the pressure control valve is operated in the opening direction. Propose a flow control method Than it is.
【０００６】[0006]
【作用】本発明の方法においては、ランス管の冷却に必
要な噴射媒体の最低量と煤吹きに必要な噴射媒体の最低
量とをランス管の各位置で比較して大きい方の量を供給
する。そうするとランス管の挿入長さが短い間は煤吹き
に必要な最低量の噴射媒体を供給し、挿入量が大きい領
域では各挿入位置でランス管の冷却に必要な最低量の噴
射媒体を供給することになる。In the method of the present invention, the minimum amount of the injection medium required for cooling the lance pipe and the minimum amount of the injection medium required for soot blowing are compared at each position of the lance pipe, and the larger amount is supplied. To do. Then, while the insertion length of the lance pipe is short, the minimum amount of injection medium required for soot blowing is supplied, and in the region where the insertion amount is large, the minimum amount of injection medium required for cooling the lance pipe is supplied at each insertion position. It will be.
【０００７】このように、ランス管の挿入長さに応じて
必要最低量の噴射媒体を供給するので、従来のように挿
入量が小さい領域で低温の噴射媒体を過剰に投入しボイ
ラ伝熱管面の温度変化幅を大きくして熱疲労を発生させ
るようなことはなく、また挿入量が大きい領域ではラン
ス管のメタル保護を適正に行なうことができる。また噴
射媒体の消費量を大幅に低減することができる。In this way, since the required minimum amount of injection medium is supplied in accordance with the insertion length of the lance tube, the low temperature injection medium is excessively charged in the area where the insertion amount is small as in the conventional case, and the boiler heat transfer tube surface is supplied. There is no possibility of causing thermal fatigue by increasing the temperature change width of the above, and the metal protection of the lance tube can be properly performed in the region where the insertion amount is large. Moreover, the consumption amount of the ejection medium can be significantly reduced.
【０００８】[0008]
【実施例】図１は本発明の方法を実施する装置の第１の
例を示す概念図、図２は図１中の制御装置（１０）の回
路の一例を示すブロック図である。上記図１において、
前記図７により説明した従来のものと同様の部分につい
ては、冗長になるのを避けるため、同一の符号を付け詳
しい説明を省く。1 is a conceptual diagram showing a first example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a block diagram showing an example of a circuit of a control device (10) in FIG. In FIG. 1 above,
The same parts as those of the conventional one described with reference to FIG. 7 are designated by the same reference numerals to avoid redundancy, and detailed description thereof is omitted.
【０００９】本実施例においては、ランス管抜差用モー
タ（８）の回転角の信号を制御装置（１０）に入力し、
これによりランス管挿入長さｘを求める。またボイラ負
荷Ｌから関数発生器（１１）により、ランス管挿入位置
のガス温度Ｔを演算する。そして上記ランス管挿入長さ
ｘとガス温度Ｔとから、ランス管（５）の冷却に必要な
蒸気量を確保できるランス管入口の蒸気圧力Ｆ1 （ｘ，
Ｔ）を、関数発生器（１２）により演算する。一方上記
ランス管挿入長さｘから関数発生器（１３）により、煤
吹きに必要な蒸気量（一定）を確保できるランス管入口
の蒸気圧力Ｆ2（ｘ）を演算する。そして高値選択器
（１４）において上記２種の蒸気圧力Ｆ1，Ｆ2 のうち
高い方Ｆ（ｘ）を選ぶと、その圧力Ｆ（ｘ）は煤吹きと
ランス管冷却の両方を可能とする必要最低圧力である。
そこで、圧力検出器（６）で検出したランス管（５）入
口の実圧力Ｐと上記必要最低圧力Ｆ（ｘ）とを減算器
（１５）で比較し、判定器（１６）により、Ｐ＞Ｆ
（ｘ）ならば圧力調整弁（２）を閉方向、Ｐ＞Ｆ（ｘ）
ならば開方向に操作して、実圧力Ｐを必要最低圧力Ｆ
（ｘ）に近付ける。In the present embodiment, a signal of the rotation angle of the lance tube pulling motor (8) is input to the control device (10),
Thus, the lance tube insertion length x is obtained. Further, the gas temperature T at the lance tube insertion position is calculated from the boiler load L by the function generator (11). Then, from the lance pipe insertion length x and the gas temperature T, the steam pressure F 1 (x, at the lance pipe inlet that can secure the amount of steam necessary for cooling the lance pipe (5).
T) is calculated by the function generator (12). On the other hand, the function generator (13) calculates the vapor pressure F 2 (x) at the inlet of the lance pipe, which can secure the vapor amount (constant) required for soot blowing, from the lance pipe insertion length x. Then, when the higher one F (x) of the two types of steam pressures F 1 and F 2 is selected in the high value selector (14), the pressure F (x) enables both soot blowing and lance tube cooling. It is the minimum required pressure.
Therefore, the actual pressure P at the entrance of the lance pipe (5) detected by the pressure detector (6) is compared with the required minimum pressure F (x) by the subtracter (15), and P> by the determiner (16). F
If (x), close the pressure control valve (2), P> F (x)
If so, operate in the opening direction and set the actual pressure P to the required minimum pressure F.
Get closer to (x).
【００１０】この場合、ランス管挿入量と蒸気流量との
関係を前記図３に重ねて示すと、図中右上りの曲線がラ
ンス管の保護上決定される蒸気流量であり、水平な直線
が煤吹きに必要な最低蒸気流量である。そして実線部分
が煤吹きとランス管冷却の両方を可能とする必要最低蒸
気流量を示す。図からわかるように本実施例では、ラン
ス管の挿入長さが短い間は煤吹きに必要な最低量の蒸気
を供給し、挿入量が大きい領域では各挿入位置でランス
管の冷却に必要な最低量の蒸気を供給するのである。In this case, when the relationship between the insertion amount of the lance tube and the steam flow rate is overlapped and shown in FIG. 3, the upper right curve in the figure is the steam flow rate determined for protection of the lance tube, and the horizontal straight line is This is the minimum steam flow rate required for soot blowing. The solid line shows the required minimum steam flow rate that enables both soot blowing and lance tube cooling. As can be seen from the figure, in this embodiment, the minimum amount of steam required for soot blowing is supplied while the insertion length of the lance pipe is short, and in the region where the insertion amount is large, cooling is required at each insertion position for the lance pipe. It supplies the minimum amount of steam.
【００１１】上記のとおり本実施例では、ランス管
（５）の挿入長さに応じて必要最低量の蒸気を供給する
ので、挿入量が小さい領域で低温蒸気を過剰に投入，ボ
イラ伝熱管面の温度変化幅を大きくして熱疲労を生じさ
せるようなことはなく、また挿入量が大きい領域ではラ
ンス管のメタル保護を適正に行なうことができる。また
噴射蒸気の消費量を減らすことができる。As described above, in the present embodiment, the minimum required amount of steam is supplied according to the insertion length of the lance pipe (5), so that the low temperature steam is excessively injected in the region where the insertion amount is small, and the boiler heat transfer tube surface There is no possibility of causing thermal fatigue by increasing the temperature change width of No. 1, and the metal protection of the lance tube can be properly performed in the region where the insertion amount is large. In addition, the consumption of injection steam can be reduced.
【００１２】ランス管（５）の挿入長さｘの検出方法と
しては、前記のようにランス管抜差用モータの回転角に
よる方法のほか、ランス管送り込みローラの回転による
方法、ランス管に別途計測用ローラを密着させその回転
による方法、ランス管の端部にマーキングし光または超
音波で位置を知る方法，ランス管に反射板を取付け超音
波の反射を利用する方法等々，種々の方法が可能であ
る。As a method of detecting the insertion length x of the lance tube (5), in addition to the method based on the rotation angle of the lance tube insertion / removal motor as described above, the method based on the rotation of the lance tube feed roller and the lance tube are separately provided. There are various methods such as a method of closely contacting the measuring roller and rotating it, a method of marking the end of the lance tube to find the position by light or ultrasonic waves, a method of attaching a reflector to the lance tube and utilizing the reflection of ultrasonic waves. It is possible.
【００１３】なお、煤吹きに必要な蒸気量は、ランス管
挿入長さｘに関係なくほぼ一定であり、その蒸気量を確
保するためのランス管入口蒸気圧力Ｆ2 もあまり変化し
ないから、上記関数発生器（１３）を省略し、Ｆ2 を一
定として制御することもできる。The amount of steam required for soot blowing is substantially constant regardless of the lance pipe insertion length x, and the lance pipe inlet steam pressure F 2 for securing the amount of steam does not change so much. It is also possible to omit the function generator (13) and control F 2 to be constant.
【００１４】図４は本発明方法を実施する装置の第２の
例を示す概念図である。この実施例では、複数組の流量
調整オリフィス（３ａ），（３ｂ），（３ｃ）と切替弁
（４ａ），（４ｂ），（４ｃ）を並列に配置し、ランス
管（５）の位置信号ｘに基づいて、切替弁を順次作動さ
せて圧力を段階的に変化させる。各切替弁（４ａ），
（４ｂ），（４ｃ）の開閉状態とランス管入口の蒸気圧
力Ｐ2 との関係は、例えば図５のとおりである。この場
合圧力制御弁（２）は一定圧力に制御される。本実施例
においては、ランス管（５）の位置（挿入長さｘ）を前
記のような種々の方法で連続的に求め、その位置信号に
より切替弁を開閉することもできるが、リミットスイッ
チをランス管（５）またはその送り装置に取付け、その
接点信号を利用して切替弁を制御することもできる。FIG. 4 is a conceptual diagram showing a second example of an apparatus for carrying out the method of the present invention. In this embodiment, a plurality of sets of flow rate adjusting orifices (3a), (3b), (3c) and switching valves (4a), (4b), (4c) are arranged in parallel, and a position signal of the lance pipe (5) is set. Based on x, the switching valve is sequentially operated to change the pressure stepwise. Each switching valve (4a),
The relationship between the open / closed states of (4b) and (4c) and the vapor pressure P 2 at the entrance of the lance pipe is as shown in FIG. 5, for example. In this case, the pressure control valve (2) is controlled to a constant pressure. In the present embodiment, the position (insertion length x) of the lance tube (5) can be continuously obtained by various methods as described above, and the changeover valve can be opened / closed by the position signal. It is also possible to mount it on the lance pipe (5) or its feeding device and use the contact signal to control the switching valve.
【００１５】図６は本発明方法を実施する装置の第３の
例を示す図である。本実施例は前記第１実施例の応用例
で、元圧は圧力制御弁（６）により一定圧力に制御し、
各ランスまたはグループにまとめた複数個のランス（例
えば同じガス温度域で使用するもの）に属する蒸気系統
毎に、ランス管位置（挿入長さ）と圧力との関係により
プログラム制御する。前記第１の実施例では、どのラン
スが使用されているか識別の上プログラムを選定する必
要があり、また違った温度域にあるランス管はプログラ
ムが違うため同時作動は不可であるが、本実施例ではそ
の制約は解除される。FIG. 6 is a diagram showing a third example of an apparatus for carrying out the method of the present invention. This embodiment is an application example of the first embodiment, in which the original pressure is controlled to a constant pressure by the pressure control valve (6),
Program control is performed by the relationship between the lance pipe position (insertion length) and the pressure for each steam system belonging to each lance or a plurality of lances grouped into a group (for example, used in the same gas temperature range). In the first embodiment, it is necessary to select a program after identifying which lance is used, and the lance tubes in different temperature regions cannot be operated simultaneously because the programs are different. In the example, the constraint is lifted.
【００１６】[0016]
【発明の効果】本発明の方法によれば、ランス管の挿入
長さが短い領域における冷たい噴射媒体の過剰投入を防
止し、スートブローを受けるボイラ伝熱管に発生する熱
疲労を軽減できる。また挿入量が大きい領域（最も奥に
入れた点，ボイラ火炉の中央付近）においてはランス管
の過熱防止に必要な噴射媒体量が十分に確保される。そ
してスートブロー１行程における噴射媒体消費量が低減
される。According to the method of the present invention, it is possible to prevent the excessive injection of the cold injection medium in the region where the insertion length of the lance tube is short, and to reduce the thermal fatigue generated in the boiler heat transfer tube that receives soot blow. In addition, in the region where the insertion amount is large (the point at the farthest point, near the center of the boiler furnace), the amount of injection medium required to prevent overheating of the lance tube is secured. Then, the consumption amount of the injection medium in one stroke of sootblowing is reduced.
【図１】図１は本発明の方法を実施する装置の第１の例
を示す概念図である。FIG. 1 is a conceptual diagram showing a first example of an apparatus for carrying out the method of the present invention.
【図２】図２は図１中の制御装置の回路の一例を示す図
である。FIG. 2 is a diagram showing an example of a circuit of a control device in FIG.
【図３】図３はランス管挿入量と蒸気流量との関係を示
す図である。FIG. 3 is a diagram showing a relationship between a lance tube insertion amount and a steam flow rate.
【図４】図４は本発明の方法を実施する装置の第２の例
を示す概念図である。FIG. 4 is a conceptual diagram showing a second example of an apparatus for carrying out the method of the present invention.
【図５】図５は上記第２の例における各切替弁の開閉状
態と蒸気圧力との関係を示す図である。FIG. 5 is a diagram showing a relationship between an open / closed state of each switching valve and steam pressure in the second example.
【図６】図６は本発明の方法を実施する装置の第３の例
を示す概念図である。FIG. 6 is a conceptual diagram showing a third example of an apparatus for carrying out the method of the present invention.
【図７】図７は従来の抜差型煤吹装置の一例を示す概念
図である。FIG. 7 is a conceptual diagram showing an example of a conventional slip-on type sootblower.
（１） 母管 （２），（２ａ），（２ｂ） 圧力調整弁 （３），（３ａ），（３ｂ），（３ｃ） 流量調整オ
リフィス （４），（４ａ） 遮断弁 （４ａ），（４ｂ），（４ｃ） 切替弁 （５），（５ａ） ランス管 （６），（６ａ） 圧力検出器 （７） 分岐管路 （８） ランス管抜
差用モータ （１０），（１０ａ） 制御装置 （１１），（１２），（１３） 関数発生器 （１４） 高値選択器 （１５） 減算器 （１６） 判定器(1) Mother pipe (2), (2a), (2b) Pressure adjusting valve (3), (3a), (3b), (3c) Flow rate adjusting orifice (4), (4a) Shutoff valve (4a), (4b), (4c) Switching valve (5), (5a) Lance pipe (6), (6a) Pressure detector (7) Branch pipe (8) Lance pipe differential motor (10), (10a) Control device (11), (12), (13) Function generator (14) High value selector (15) Subtractor (16) Judgment device
Claims (1)
調整弁を介して噴射媒体を送給する抜差型煤吹装置にお
いて、上記ボイラ火炉内のガス温度と上記ランス管の挿
入長さとから上記ランス管の冷却に必要な噴射媒体量を
確保できるランス管入口の媒体圧力を演算するととも
に、煤吹きに必要な噴射媒体量を確保できるランス管入
口の媒体圧力と上記の演算結果とを比較して、高い方の
媒体圧力を選び、その高い方の媒体圧力とランス管入口
で実測した媒体圧力とを比較して、実測した媒体圧力の
方が高ければ上記圧力調整弁を閉方向に操作し、実測し
た媒体圧力の方が低ければ上記圧力調整弁を開方向に操
作することを特徴とする煤吹装置の噴射媒体流量制御方
法。1. A differential soot blowing device for feeding an injection medium to a lance tube inserted into a boiler furnace through a pressure control valve, wherein the gas temperature in the boiler furnace and the insertion length of the lance tube are used. Calculate the medium pressure at the lance pipe inlet that can secure the amount of injection medium required for cooling the lance pipe, and compare the medium pressure at the lance pipe inlet that can secure the amount of injection medium required for soot blowing with the above calculation results. Then, select the higher medium pressure, compare the higher medium pressure with the medium pressure measured at the lance pipe inlet, and if the measured medium pressure is higher, operate the pressure adjustment valve in the closing direction. Then, if the measured medium pressure is lower, the injection medium flow rate control method for the soot blowing device is characterized in that the pressure regulating valve is operated in the opening direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34847692A JPH06201119A (en) | 1992-12-28 | 1992-12-28 | Jet medium flow rate control method of soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34847692A JPH06201119A (en) | 1992-12-28 | 1992-12-28 | Jet medium flow rate control method of soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06201119A true JPH06201119A (en) | 1994-07-19 |
Family
ID=18397269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34847692A Withdrawn JPH06201119A (en) | 1992-12-28 | 1992-12-28 | Jet medium flow rate control method of soot blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06201119A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095204A (en) * | 2010-11-09 | 2011-06-15 | 东南大学 | Boiler soot blowing control device based on flue fly ash mass flow |
| JP2013007536A (en) * | 2011-06-24 | 2013-01-10 | Nippon Furnace Co Ltd | Cleaning device and cleaning method for honeycomb heat storage body |
| JPWO2014097426A1 (en) * | 2012-12-19 | 2017-01-12 | Ｍｈｉプラント株式会社 | Soup system with pressure adjustment mechanism |
| CN109631062A (en) * | 2019-02-22 | 2019-04-16 | 中国科学院力学研究所 | A kind of gas pulse soot blower cooling based on water mist |
-
1992
- 1992-12-28 JP JP34847692A patent/JPH06201119A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095204A (en) * | 2010-11-09 | 2011-06-15 | 东南大学 | Boiler soot blowing control device based on flue fly ash mass flow |
| JP2013007536A (en) * | 2011-06-24 | 2013-01-10 | Nippon Furnace Co Ltd | Cleaning device and cleaning method for honeycomb heat storage body |
| JPWO2014097426A1 (en) * | 2012-12-19 | 2017-01-12 | Ｍｈｉプラント株式会社 | Soup system with pressure adjustment mechanism |
| CN109631062A (en) * | 2019-02-22 | 2019-04-16 | 中国科学院力学研究所 | A kind of gas pulse soot blower cooling based on water mist |
| CN109631062B (en) * | 2019-02-22 | 2023-09-05 | 中国科学院力学研究所 | A gas pulse soot blowing device based on water mist cooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000307 |