JPH026968B2 - - Google Patents
Info
- Publication number
- JPH026968B2 JPH026968B2 JP58021660A JP2166083A JPH026968B2 JP H026968 B2 JPH026968 B2 JP H026968B2 JP 58021660 A JP58021660 A JP 58021660A JP 2166083 A JP2166083 A JP 2166083A JP H026968 B2 JPH026968 B2 JP H026968B2
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- flow rate
- nozzle
- valve
- fuel
- 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
Links
- 239000000446 fuel Substances 0.000 claims description 18
- 230000009977 dual effect Effects 0.000 claims description 9
- 239000000295 fuel oil Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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
- F23N1/085—Regulating fuel supply conjointly with another medium, e.g. boiler water using electrical or electromechanical means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
- G05D7/0641—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means using a plurality of throttling means
- G05D7/0652—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means using a plurality of throttling means the plurality of throttling means being arranged in parallel
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spray-Type Burners (AREA)
- Feeding And Controlling Fuel (AREA)
Description
【発明の詳細な説明】
本発明は、ノズルを二重構造とした二重化バー
ナノズルへ供給する燃料の流量を制御するための
二重化バーナノズル用燃料制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel control device for a dual burner nozzle for controlling the flow rate of fuel supplied to a dual burner nozzle having a double nozzle structure.
例えばパツケージボイラに使用されるバーナの
燃焼レンジは、現在のところ３：１ないし６：１
程度であり、広くても10：１程度が限界であつ
た。しかし、近時省エネルギ化の要請が高まり、
またユーザにおける操業度の変化により、燃焼レ
ンジを30：１あるいは50：１と極めて広くするこ
とが要求されるようになつた。 For example, the combustion range of burners used in package boilers is currently 3:1 to 6:1.
The maximum ratio was about 10:1 at most. However, recently the demand for energy saving has increased,
Additionally, due to changes in the operating efficiency of users, it has become necessary to increase the combustion range to an extremely wide range of 30:1 or 50:1.
このような要求に応え本出願人は、第１図に示
すような、蒸気管１を中心に第１ノズル２と第２
ノズル３を二重に配設したいわゆる二重化バーナ
ノズル４を特願昭57−147723号（特開昭59−
38516号公報）として提案した。 In response to such demands, the present applicant has developed a first nozzle 2 and a second nozzle centered around a steam pipe 1, as shown in FIG.
A so-called double burner nozzle 4 in which nozzles 3 are arranged in a double manner is disclosed in Japanese Patent Application No. 57-147723 (Japanese Unexamined Patent Publication No. 147723-1983).
38516).
本発明はこのような先に提案した二重化バーナ
ノズルにおいて高い燃焼レンジを維持するのに好
適な燃料制御装置を提供することを目的としてな
されたものである。 The present invention has been made with the object of providing a fuel control device suitable for maintaining a high combustion range in the dual burner nozzle proposed above.
以下本発明の一実施例を第２図ないし第５図を
参照して詳細に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 2 to 5.
第２図は本発明に係る二重化バーナノズル用燃
料制御装置の一実施例を示す系統図である。この
図において、４は第１図に示した二重化バーナノ
ズルであり、その第１ノズルには管１１が、また
第２ノズルには管１２が夫々連結されている。管
１１には遮断弁１３が連結されており、管１２に
は流量の小さい制御弁１４が連結されている。そ
して、遮断弁１３及び制御弁１４の上流側におい
て管１１、１２は管１５に一本化されている（逆
に云えば、管１５は管１１，１２に分岐されてい
る）。管１５には制御弁１６が連結され、その上
流側に燃料供給ポンプ１７が連結されている。 FIG. 2 is a system diagram showing an embodiment of a fuel control device for a dual burner nozzle according to the present invention. In this figure, reference numeral 4 denotes the double burner nozzle shown in FIG. 1, of which a tube 11 is connected to the first nozzle, and a tube 12 is connected to the second nozzle. A shutoff valve 13 is connected to the pipe 11, and a control valve 14 with a small flow rate is connected to the pipe 12. On the upstream side of the cutoff valve 13 and the control valve 14, the pipes 11 and 12 are unified into a pipe 15 (in other words, the pipe 15 is branched into pipes 11 and 12). A control valve 16 is connected to the pipe 15, and a fuel supply pump 17 is connected to the upstream side of the control valve 16.
次に、これら遮断弁１３、制御弁１４，１６を
制御する回路の構成について説明する。 Next, the configuration of a circuit that controls these cutoff valves 13 and control valves 14 and 16 will be explained.
２１は図示しないボイラの主蒸気圧を検知する
圧力計であり、この圧力計２１の検知信号は比例
積分演算器２２へ供給され、ここで別に設定され
る圧力設定値２３との偏差が演算される。この偏
差に対して比例積分演算器２２により演算された
信号は、高値選択器２４、係数器２５及び遮断弁
制御器２６へ夫々供給される。 Reference numeral 21 denotes a pressure gauge (not shown) for detecting the main steam pressure of the boiler, and the detection signal of this pressure gauge 21 is supplied to a proportional-integral calculator 22, where the deviation from a pressure setting value 23 set separately is calculated. Ru. A signal calculated by the proportional-integral calculator 22 for this deviation is supplied to a high value selector 24, a coefficient unit 25, and a cutoff valve controller 26, respectively.
高値選択器２４には所定の選択器用設定値２７
が設定されており、この設定値２７と比例積分演
算器２２からの信号による値とを比較し、高い値
の信号を制御弁１６へ与え、この信号に応じた弁
開度となるように制御弁１６を制御する。 The high value selector 24 has a predetermined selector setting value 27.
is set, this set value 27 is compared with the value based on the signal from the proportional integral calculator 22, and a signal with a high value is given to the control valve 16, so that the valve opening degree is controlled according to this signal. Control valve 16.
係数器２５は与えられた信号を定数倍する働き
をもつたもので、比例積分演算器２２からの信号
レベルが第３図のイ点すわち蒸気流量たとえば10
％に相当するレベルのときに、制御弁１４の弁開
度を100％とし得るレベルの信号となるように定
数倍したものを高値選択器２８へ供給する。高値
選択器２８には所定の選択器用設定値２９が設定
されており、この設定値２９と係数器２５からの
信号レベルとを比較し、高いレベルの信号を制御
弁１４へ与え、この信号に応じた弁開度となるよ
うに制御弁１４を制御する。 The coefficient unit 25 has the function of multiplying the given signal by a constant, and the signal level from the proportional-integral calculator 22 corresponds to point A in FIG. 3, that is, the steam flow rate, for example, 10
%, a signal multiplied by a constant is supplied to the high value selector 28 so that the signal is at a level that can make the valve opening of the control valve 14 100%. A predetermined selector setting value 29 is set in the high value selector 28, and this setting value 29 is compared with the signal level from the coefficient unit 25, and a high level signal is given to the control valve 14, and this signal is The control valve 14 is controlled to have the corresponding valve opening degree.
遮断弁制御器２６は比例積分演算器２２からの
信号レベルが制御弁１４を100％の開度とするレ
ベルのときすなわち、蒸気流量が第３図のイ点に
相当するレベルのときに、遮断弁１３を開くよう
に制御し、制御弁１４の弁開度が100％未満では
遮断弁１３を閉じるように制御している。なお、
遮断弁１３を開くときに、弁を瞬時に開くと配管
内の圧力変動により流量の制御が難しくなるの
で、例えば20〜30秒の時間をかけて徐々に開度が
広がるようにしている。第４図は遮断弁１３にお
ける蒸気流量に対する遮断弁流量の関係の示した
もので、この図からも明らかなように、遮断弁１
３は蒸気流量がイ点以下では遮断されており、イ
点を越えると開かれる。 The shutoff valve controller 26 shuts off when the signal level from the proportional integral calculator 22 is at a level that makes the control valve 14 open to 100%, that is, when the steam flow rate is at a level corresponding to point A in FIG. The valve 13 is controlled to be opened, and when the valve opening degree of the control valve 14 is less than 100%, the shutoff valve 13 is controlled to be closed. In addition,
When opening the shutoff valve 13, if the valve is opened instantaneously, it will be difficult to control the flow rate due to pressure fluctuations within the piping, so the opening degree is gradually increased over a period of, for example, 20 to 30 seconds. FIG. 4 shows the relationship between the shutoff valve flow rate and the steam flow rate in the shutoff valve 13. As is clear from this figure, the shutoff valve 1
3 is closed when the steam flow rate is below point A, and is opened when it exceeds point A.
第５図は制御弁１４，１６における蒸気流量と
燃料流量との関係を示したものである。 FIG. 5 shows the relationship between the steam flow rate and the fuel flow rate in the control valves 14 and 16.
次に本発明の動作を説明する。 Next, the operation of the present invention will be explained.
燃料油は燃料供給ポンプ１７により管１５へ送
られ、制御弁１６，１４、遮断弁１３が開いてい
れば、燃料油は管１５から管１１，１２へ分岐さ
れ、二重化バーナノズル４の第１ノズル２及び第
２ノズル３へ夫々供給される。 The fuel oil is sent to the pipe 15 by the fuel supply pump 17, and if the control valves 16, 14 and the cutoff valve 13 are open, the fuel oil is branched from the pipe 15 to the pipes 11, 12, and is then sent to the first nozzle of the dual burner nozzle 4. 2 and the second nozzle 3, respectively.
図示しないボイラの主蒸気圧は圧力計２１によ
り検知され、その検知出力にもとづき制御弁１
６，１４及び遮断弁１３が制御されることにな
る。 The main steam pressure of the boiler (not shown) is detected by a pressure gauge 21, and based on the detected output, the control valve 1
6, 14 and the shutoff valve 13 will be controlled.
制御弁１６は通常最大流量の10％程度以下の流
量を制御することは不可能であり、かつそれ以下
での弁からの漏れを防ぐことができない。第５図
において、蒸気流量イ点のところが制御弁１６の
制御不能となり、流量Ｐの燃料油が漏れて流れる
ことになる（制御弁の機能として完全には閉じな
い）。 The control valve 16 is normally unable to control a flow rate of about 10% or less of the maximum flow rate, and cannot prevent leakage from the valve at a flow rate lower than that. In FIG. 5, the control valve 16 becomes uncontrollable at the steam flow rate point A, and fuel oil with a flow rate P leaks and flows (as a function of the control valve, it does not close completely).
蒸気流量がイ点以下では遮断弁１３は第４図に
示すように完全に遮断される（開ける場合と同じ
ように20〜30秒かけて）。しかし、制御弁１４は
制御弁１６に比し最大流量が十分低いので、イ点
以下でも弁開度は制御され、従つて燃料油も制御
されて二重化バーナノズル４の第２ノズル３へ供
給される。 When the steam flow rate is below point A, the shutoff valve 13 is completely shut off as shown in FIG. 4 (it takes 20 to 30 seconds, just like when it is opened). However, since the maximum flow rate of the control valve 14 is sufficiently lower than that of the control valve 16, the valve opening degree is controlled even below point A, and therefore the fuel oil is also controlled and supplied to the second nozzle 3 of the dual burner nozzle 4. .
蒸気流量がイ点を越えると制御弁１６が制御可
能となり、かつ遮断弁１３が開き制御弁１４が全
開となるため、第１ノズル２へ供給される。 When the steam flow rate exceeds point A, the control valve 16 becomes controllable, the cutoff valve 13 opens, and the control valve 14 becomes fully open, so that steam is supplied to the first nozzle 2.
このように本発明では、最大流量の大きな制御
弁１６に、並列接続した遮断弁１３と最大流量の
小さな制御弁１４とを直列に接続するように構成
し、イ点で示す蒸気流量を境として、それ以下の
蒸気流量域では遮断弁１３を閉じ、制御弁１４に
よつて燃料油の微少流量を制御し、イ点を越える
蒸気流量域では遮断弁１３を開いて制御弁１６に
よつて燃料油の流量を制御するようにしたので、
広い蒸気流量範囲にわたつて、滑らかに燃料の流
量を制御することができる。 In this way, in the present invention, the control valve 16 with a large maximum flow rate is configured so that the shutoff valve 13 connected in parallel and the control valve 14 with a small maximum flow rate are connected in series, and the steam flow rate shown at point A is used as the boundary. In the steam flow rate range below , the cutoff valve 13 is closed and the control valve 14 controls the minute flow rate of fuel oil, and in the steam flow rate range exceeding point A, the cutoff valve 13 is opened and the control valve 16 controls the fuel oil. Since the flow rate of oil was controlled,
The fuel flow rate can be smoothly controlled over a wide steam flow rate range.
本発明は上述の一実施例に限定されることな
く、要旨を逸脱しない範囲内で種々変形して実施
できることは云うまでもない。 It goes without saying that the present invention is not limited to the above-mentioned embodiment, but can be implemented with various modifications without departing from the scope of the invention.
第１図は二重化バーナノズルを示す断面図、第
２図は本発明に係る二重化バーナノズル用燃料制
御装置の一実施例を示す系統図、第３図ないし第
５図は本発明の動作を説明するために示す特性図
である。
１……蒸気管、２……第１ノズル、３……第２
ノズル、４……二重化バーナノズル、１３……遮
断弁、１４，１６……制御弁、１７……燃料供給
ポンプ、２１……圧力計、２２……比例積分演算
器、２４，２８……高値選択器、２５……係数
器、２６……遮断弁制御器。
FIG. 1 is a sectional view showing a dual burner nozzle, FIG. 2 is a system diagram showing an embodiment of a fuel control device for a dual burner nozzle according to the present invention, and FIGS. 3 to 5 are for explaining the operation of the present invention. FIG. 1... Steam pipe, 2... First nozzle, 3... Second
Nozzle, 4...Duplicated burner nozzle, 13...Shutoff valve, 14, 16...Control valve, 17...Fuel supply pump, 21...Pressure gauge, 22...Proportional integral calculator, 24, 28...High value selection 25...Coefficient unit, 26...Shutoff valve controller.
Claims (1)
へ燃料を供給するための装置であつて、燃料供給
ポンプと、この燃料供給ポンプの出口側に設けた
第１の制御弁と、この第１の制御弁の出口側から
分岐され前記二重化バーナノズルの第１のノズル
に連結される管路に設けた遮断弁と、前記第１の
制御弁の出口側から分岐されて前記二重化バーナ
ノズルの第２のノズルに連結される管路に設けた
前記第１の制御弁よりも流量の小さい第２の制御
弁とを具備し、この第２の制御弁の最大燃料流量
以下の蒸気量では前記遮断弁を閉じて、第２の制
御弁によつて燃料量を制御し、前記第２の制御弁
の最大燃料流量を越える蒸気量では前記遮断弁を
開いて、前記第１の制御弁によつて燃料量を制御
するように構成したことを特徴とする二重化バー
ナノズル用燃料制御装置。1. A device for supplying fuel to a duplexed burner nozzle having a double nozzle structure, which includes a fuel supply pump, a first control valve provided on the outlet side of this fuel supply pump, and this first control valve. a cutoff valve provided in a pipe branched from the outlet side of the control valve and connected to the first nozzle of the duplex burnano nozzle; and a cutoff valve provided in a pipe branched from the outlet side of the first control valve and connected to the second nozzle of the duplex burnano nozzle. and a second control valve having a smaller flow rate than the first control valve provided in the pipeline, and closing the cutoff valve when the amount of steam is less than the maximum fuel flow rate of the second control valve, The amount of fuel is controlled by a second control valve, and when the amount of steam exceeds the maximum fuel flow rate of the second control valve, the shutoff valve is opened and the amount of fuel is controlled by the first control valve. A fuel control device for a dual burner nozzle, characterized in that it is configured as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58021660A JPS59147930A (en) | 1983-02-14 | 1983-02-14 | Fuel control device for double burner nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58021660A JPS59147930A (en) | 1983-02-14 | 1983-02-14 | Fuel control device for double burner nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59147930A JPS59147930A (en) | 1984-08-24 |
| JPH026968B2 true JPH026968B2 (en) | 1990-02-14 |
Family
ID=12061192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58021660A Granted JPS59147930A (en) | 1983-02-14 | 1983-02-14 | Fuel control device for double burner nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59147930A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19627539A1 (en) * | 1996-07-09 | 1998-01-15 | Gaggenau Werke | Method and device for controlling the flame size of gas-operated cooking or baking devices |
| GB2316463B (en) * | 1996-08-15 | 2000-07-05 | Honeywell Control Syst | Flow control |
| EP1081570A1 (en) * | 1999-08-30 | 2001-03-07 | TeeJet Technologies | Fluid flow regulator and control method |
-
1983
- 1983-02-14 JP JP58021660A patent/JPS59147930A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59147930A (en) | 1984-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2002081606A (en) | Method for controlling boiler | |
| JPS59147930A (en) | Fuel control device for double burner nozzle | |
| JP2900015B2 (en) | Water heater | |
| JPS6234125Y2 (en) | ||
| JPH05157221A (en) | Mixing device for emulsion combustion | |
| JPS6069419A (en) | Fuel controller for double-structured burner nozzle | |
| JPH0147707B2 (en) | ||
| US2484301A (en) | Safety control | |
| JPS6311545Y2 (en) | ||
| JPH0531392Y2 (en) | ||
| JPS5856050B2 (en) | Boiler combustion control device | |
| JPH09236208A (en) | Fluid-feeding device in combined multiboilers system | |
| JPS5843310A (en) | Controller for feedwater | |
| JPS6135441B2 (en) | ||
| JPH0722563Y2 (en) | Boiler equipment | |
| JPS54121432A (en) | Gas combustion system | |
| JPH0587325A (en) | Control of steam pressure for soot blower | |
| CN2300857Y (en) | Water heater with steady flow device | |
| JPH05280707A (en) | Superheater of waste heat recovery boiler in refuse incinerator | |
| JPS6229763Y2 (en) | ||
| JP3053980B2 (en) | Boiler combustion control device | |
| JPS6332224A (en) | Heat supply system | |
| JPH1073205A (en) | Controller for once-through boiler | |
| JPH0674558A (en) | Hot water supply apparatus | |
| JPH04251102A (en) | Control method of once-through boiler |