JP3453973B2 - Control method of premixed combustion device - Google Patents

Control method of premixed combustion device

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Publication number
JP3453973B2
JP3453973B2 JP34073495A JP34073495A JP3453973B2 JP 3453973 B2 JP3453973 B2 JP 3453973B2 JP 34073495 A JP34073495 A JP 34073495A JP 34073495 A JP34073495 A JP 34073495A JP 3453973 B2 JP3453973 B2 JP 3453973B2
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Japan
Prior art keywords
air
combustion
chamber
flow rate
fuel
Prior art date
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JP34073495A
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Japanese (ja)
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JPH09178186A (en
Inventor
陽一郎 大久保
芳典 井戸田
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Toyota Central R&D Labs Inc
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Toyota Central R&D Labs Inc
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Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、燃料と空気を予め
混合して燃焼する予混合燃焼装置において、燃焼を制御
する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling combustion in a premixed combustion device in which fuel and air are premixed and burned.

【０００２】[0002]

【従来の技術】予混合燃焼方式は、予混合室で燃料と空
気を予め混合してその混合気を燃焼室で燃焼するので、
燃料を燃焼室に直接噴霧して燃焼する拡散燃焼方式に比
較して、本質的に、燃焼室の混合気が均一になって燃焼
温度が均一になり易く、高温領域が少なくてサーマルＮ
Ｏxの生成が少ない。予混合燃焼方式においても、サー
マルＮＯxの生成を抑制するため、燃焼室の混合気の空
気過剰率を大きくして、希薄燃焼が行なわれる。しか
し、燃焼室の混合気の空気過剰率が大きくなり過ぎる
と、一酸化炭素ＣＯや未燃炭化水素ＨＣの生成が急増
し、燃焼室の燃焼の火炎が不安定になって吹き消える。
逆に、燃焼室の空気過剰率が小さくなり過ぎると、予混
合室で逆火や自発火のような異常燃焼が発生する。予混
合燃焼方式は、予混合室の異常燃焼が発生せずに有害物
の排出が少なく火炎が安定する燃焼室の空気過剰率の範
囲が狭い。従って、負荷変動範囲が広いガスタービンエ
ンジンの燃焼装置に要求される性能を満足させることが
一般的に困難である。2. Description of the Related Art In a premix combustion system, fuel and air are premixed in a premix chamber and the mixture is burned in the combustion chamber.
Compared to the diffusion combustion method in which fuel is directly sprayed into the combustion chamber and burned, the air-fuel mixture in the combustion chamber is essentially uniform and the combustion temperature tends to be uniform, and the high temperature region is small
Generation of O x is small. Even in the premixed combustion method, lean combustion is performed by increasing the excess air ratio of the air-fuel mixture in the combustion chamber in order to suppress the generation of thermal NO x . However, if the excess air ratio of the air-fuel mixture in the combustion chamber becomes too large, the production of carbon monoxide CO and unburned hydrocarbons HC will increase rapidly, and the combustion flame in the combustion chamber will become unstable and blow off.
On the contrary, if the excess air ratio in the combustion chamber becomes too small, abnormal combustion such as flashback or spontaneous combustion occurs in the premixing chamber. The premix combustion system has a narrow range of excess air ratio in the combustion chamber in which abnormal combustion in the premix chamber does not occur, harmful substances are discharged, and the flame is stable. Therefore, it is generally difficult to satisfy the performance required for the combustion device of the gas turbine engine having a wide load variation range.

【０００３】再生式ガスタービンエンジンにおいては、
燃料消費率を改善するため、タービン入口即ち燃焼装置
出口のガス温度を１０００〜１４００℃に高め、燃焼装
置に供給される空気をタービンが排出するガスで加熱し
て、燃焼装置入口の空気温度を６００〜１０００℃に高
めることが研究されている。In a regenerative gas turbine engine,
In order to improve the fuel consumption rate, the gas temperature at the turbine inlet, that is, the combustor outlet is increased to 1000 to 1400 ° C., and the air supplied to the combustor is heated by the gas discharged from the turbine to increase the air temperature at the combustor inlet. Studies have been conducted to raise the temperature to 600 to 1000 ° C.

【０００４】予混合希薄燃焼方式は、燃焼装置入口の空
気温度が６００〜１０００℃に上昇すると、燃焼室の燃
焼火炎が１５００℃程度以上の比較的均一な温度に保持
され、有害物の排出が少なく火炎が安定すると考えられ
る。しかし、予混合室で逆火や自発火のような異常燃焼
が発生し易くなる。In the premixed lean combustion system, when the air temperature at the inlet of the combustion apparatus rises to 600 to 1000 ° C., the combustion flame in the combustion chamber is maintained at a relatively uniform temperature of about 1500 ° C. or higher, and harmful substances are discharged. It is considered that the flame is stable and there is little. However, abnormal combustion such as flashback or spontaneous combustion is likely to occur in the premix chamber.

【０００５】そこで、予混合室の異常燃焼を防止するた
め、燃焼室の空気過剰率の許容範囲の下限を上げること
が考えられるが、そうすると、空気過剰率の許容範囲が
更に狭くなって、ガスタービンエンジンの大きな負荷変
動に対応することがますます困難になる。Therefore, in order to prevent abnormal combustion in the premix chamber, it is conceivable to raise the lower limit of the allowable range of the excess air ratio of the combustion chamber. It becomes increasingly difficult to cope with large load fluctuations of turbine engines.

【０００６】また、燃焼室の燃焼火炎が１５００℃程度
以上の温度に保持されると、燃焼室出口のガス温度がタ
ービンの耐熱温度，最高で１４００℃位を越えるので、
燃焼室から出る燃焼ガスを希釈混合室で空気の混合によ
り希釈して燃焼室出口のガス温度をタービンの耐熱温度
以下にする。Further, if the combustion flame in the combustion chamber is maintained at a temperature of about 1500 ° C. or higher, the gas temperature at the outlet of the combustion chamber exceeds the heat resistant temperature of the turbine, which is about 1400 ° C. at maximum.
The combustion gas discharged from the combustion chamber is diluted by mixing air in the dilution mixing chamber so that the gas temperature at the outlet of the combustion chamber becomes equal to or lower than the heat resistant temperature of the turbine.

【０００７】自動車用再生式ガスタービンエンジンは、
負荷変動範囲が広く、燃焼装置の燃料流量の変動範囲が
広い。Regenerative gas turbine engines for automobiles are
Wide load fluctuation range and wide fluctuation range of fuel flow rate of the combustion device.

【０００８】自動車用再生式ガスタービンエンジンの予
混合希薄燃焼方式は、広い負荷変動範囲において、有害
物の排出を少なくして火炎を安定に保持するため、燃料
流量の変動に応じて燃焼用の空気流量を最適に制御する
必要がある。空気通路に供給された空気を燃焼用空気と
希釈用空気に分配する率が固定されていると、燃焼用空
気流量を最適に制御することができない。The premixed lean combustion system for a regenerative gas turbine engine for automobiles is designed to reduce the emission of harmful substances and maintain a stable flame over a wide load variation range. It is necessary to control the air flow rate optimally. If the rate at which the air supplied to the air passage is divided into combustion air and dilution air is fixed, the combustion air flow rate cannot be optimally controlled.

【０００９】また、始動時や加速時のように燃料流量が
急増するときには、予混合室の異常燃焼を防止するた
め、予混合室の混合気の濃度を高めずに、燃料の一部を
直接燃焼室に噴射して燃焼し、予混合希薄燃焼に拡散燃
焼を組み合わせた複合燃焼を行なう。しかし、予混合室
で空気と予め混合する燃料の割合が大きい程、燃焼室の
混合気が均一になり、サーマルＮＯxの生成が少ない。
予混合する燃料の割合を大きくするには、予混合室に供
給する燃焼用空気の流量を最適に制御する必要がある。Further, when the fuel flow rate rapidly increases such as at the time of starting or accelerating, in order to prevent abnormal combustion in the premix chamber, a part of the fuel is directly added without increasing the concentration of the air-fuel mixture in the premix chamber. It is injected into the combustion chamber and burned, and combined combustion that combines premixed lean combustion and diffusion combustion is performed. However, the larger the ratio of the fuel premixed with the air in the premix chamber, the more uniform the air-fuel mixture in the combustion chamber, and the less the generation of thermal NO x .
In order to increase the proportion of fuel to be premixed, it is necessary to optimally control the flow rate of combustion air supplied to the premix chamber.

【００１０】[0010]

【発明が解決しようとする課題】ところが、従来の予混
合燃焼装置においては、予混合室に異常燃焼が発生し難
くしたものがあるが、異常燃焼の発生が皆無ではなく、
異常燃焼を回避するわけでもない。However, in some of the conventional premixing combustion devices, it is difficult to cause abnormal combustion in the premixing chamber, but abnormal combustion does not occur at all.
It does not prevent abnormal combustion.

【００１１】また、燃焼室の燃焼を制御するに当たり、
燃焼室の燃焼状態を正確に検知しない上、予混合室に供
給する燃焼用空気と希釈混合室に供給する希釈用空気の
分配率が固定され、燃焼用空気の流量が最適に制御され
ない。In controlling combustion in the combustion chamber,
In addition to not accurately detecting the combustion state of the combustion chamber, the distribution ratio of the combustion air supplied to the premix chamber and the dilution air supplied to the dilution mixing chamber is fixed, and the flow rate of the combustion air is not optimally controlled.

【００１２】従って、予混合室の異常燃焼をなくし、有
害物の排出を少なくして火炎を安定に保持することがで
きない。Therefore, it is impossible to prevent abnormal combustion in the premixing chamber, reduce the emission of harmful substances, and stably maintain the flame.

【００１３】[0013]

【課題を解決するための着眼】予混合室に発生した異常
燃焼火炎は、予混合室に噴霧する燃料の流量を減少する
と、また、予混合室に供給する空気の流量を増加する
と、予混合室の混合気の濃度が低くなり、消火される。[Observation for solving the problem] The abnormal combustion flame generated in the premixing chamber causes premixing when the flow rate of fuel sprayed into the premixing chamber is decreased and when the flow rate of air supplied to the premixing chamber is increased. The concentration of the air-fuel mixture in the chamber becomes low and the fire is extinguished.

【００１４】予混合希薄燃焼は、燃焼温度がほぼ均一に
なるので、燃焼温度に基づいて制御することができる。
しかし、１５００℃程度以上の燃焼温度は、熱電対のよ
うな従来の温度センサで直接検知することができない。Since the combustion temperature in the premixed lean combustion becomes almost uniform, it can be controlled based on the combustion temperature.
However, a combustion temperature of about 1500 ° C. or higher cannot be directly detected by a conventional temperature sensor such as a thermocouple.

【００１５】ところが、空気通路入口の空気温度が３０
０℃程度以上である場合のような、燃焼装置入口の作動
条件が一定の範囲にある場合には、燃焼室の燃焼温度が
空気通路入口の空気温度と燃焼室の平均空気過剰率から
ほぼ決まるので、燃焼室の平均空気過剰率を求め、平均
空気過剰率に基づいて制御することができる。また、平
均空気過剰率と空気通路入口の空気温度から燃焼室の燃
焼温度を求め、この燃焼温度に基づいて制御することが
できる。However, the air temperature at the inlet of the air passage is 30
When the operating condition of the inlet of the combustion device is within a certain range, such as when the temperature is about 0 ° C. or higher, the combustion temperature of the combustion chamber is almost determined from the air temperature at the inlet of the air passage and the average excess air ratio of the combustion chamber. Therefore, it is possible to obtain the average excess air ratio of the combustion chamber and perform control based on the average excess air ratio. Further, the combustion temperature of the combustion chamber can be obtained from the average excess air ratio and the air temperature at the inlet of the air passage, and control can be performed based on this combustion temperature.

【００１６】予混合希薄燃焼に拡散燃焼を組み合わせた
複合燃焼のときのように、燃焼負荷が増大するときに
は、燃焼装置の圧力損失が増大するので、この圧力損失
などから燃焼室の平均空気過剰率を求めることができ
る。また、燃焼室の燃焼温度を求めることができる。When the combustion load increases, as in the case of combined combustion in which premixed lean combustion and diffusion combustion are combined, the pressure loss of the combustion device increases. Therefore, due to this pressure loss, etc., the average excess air ratio of the combustion chamber is increased. Can be asked. Also, the combustion temperature of the combustion chamber can be obtained.

【００１７】[0017]

【課題を解決するための手段】燃料と空気を混合する予
混合室、燃料と空気の混合気を燃焼する燃焼室と、燃焼
ガスと空気を混合する希釈混合室を順次接続し、予混合
室に燃料を噴霧する第１燃料噴射弁と、燃焼室に燃料を
噴霧する第２燃料噴射弁を設け、予混合室と希釈混合室
または燃焼室に空気を供給する空気通路を設けた予混合
燃焼装置において、燃焼室の燃焼火炎の状態量を検知し
て燃焼室の平均空気過剰率を求め、空気通路に供給する
空気の流量、空気通路入口の空気圧力、希釈混合室出口
の燃焼ガス圧力と空気通路入口の空気温度を検知し、燃
焼室の平均空気過剰率、空気通路に供給する空気の流
量、空気通路入口の空気圧力、希釈混合室出口の燃焼ガ
ス圧力と空気通路入口の空気温度に基づいて燃焼室の燃
焼温度を求め、燃焼温度が所望の範囲の下限値より小さ
いときには、予混合室に供給する空気の流量を減少し、
燃焼温度が所望の範囲の上限値より大きいときには、予
混合室に供給する空気の流量を増加して、燃焼室の燃焼
温度を所望の範囲内にし、予混合室に発生した燃焼を検
知すると、予混合室に噴霧する燃料の流量を減少する
か、もしくは予混合室に供給する空気の流量を増加し、
または、予混合室に噴霧する燃料の流量を減少すると共
に、予混合室に供給する空気の流量を増加して、予混合
室の燃焼火炎を消火することを特徴とする制御方法。A premixing chamber for mixing fuel and air, a combustion chamber for burning a mixture of fuel and air, and a diluting mixing chamber for mixing combustion gas and air are sequentially connected to each other to form a premixing chamber. Premixed combustion in which a first fuel injection valve for spraying fuel and a second fuel injection valve for spraying fuel in the combustion chamber are provided, and an air passage for supplying air to the premixing chamber and the dilution mixing chamber or the combustion chamber is provided In the device, the state quantity of the combustion flame in the combustion chamber is detected , the average excess air ratio in the combustion chamber is calculated, and it is supplied to the air passage.
Air flow rate, air pressure at air passage inlet, dilution mixing chamber outlet
The combustion gas pressure and the air temperature at the inlet of the air passage are detected to
Average excess air ratio in the baking chamber, air flow supplied to the air passage
Volume, air pressure at the air passage inlet, and combustion gas at the dilution mixing chamber outlet.
Of the combustion chamber based on the pressure of the air and the air temperature at the inlet of the air passage.
Calculate the firing temperature , and the combustion temperature is lower than the lower limit of the desired range.
If not, reduce the flow rate of air supplied to the premix chamber,
If the combustion temperature is above the upper limit of the desired range, the
Combustion in the combustion chamber by increasing the flow rate of air supplied to the mixing chamber
When the temperature is within a desired range and combustion that occurs in the premix chamber is detected, the flow rate of fuel sprayed into the premix chamber is reduced, or the flow rate of air supplied to the premix chamber is increased,
Alternatively, the control method is characterized in that the flow rate of the fuel sprayed in the premix chamber is reduced and the flow rate of the air supplied to the premix chamber is increased to extinguish the combustion flame in the premix chamber.

【００１８】また、定常運転時のように予混合燃焼装置
の作動条件の変動が小さいときには、燃焼室の燃焼火炎
の状態量を検知して、燃焼室の平均空気過剰率を求め、
過渡運転時のように予混合燃焼装置の作動条件の変動が
大きいときには、両燃料噴射弁に供給する燃料の流量、
空気通路に供給する空気の流量、空気通路入口の空気圧
力、希釈混合室出口の燃焼ガス圧力と空気通路入口の空
気温度を検知して、燃焼室の平均空気過剰率を求め、燃
焼室の平均空気過剰率が所望の範囲の下限値より小さい
ときには、予混合室に供給する空気の流量を増加し、平
均空気過剰率が所望の範囲の上限値より大きいときに
は、予混合室に供給する空気の流量を減少して、燃焼室
の平均空気過剰率を所望の範囲内にし、予混合室に発生
した燃焼を検知すると、予混合室に噴霧する燃料の流量
を減少するか、もしくは予混合室に供給する空気の流量
を増加し、または、予混合室に噴霧する燃料の流量を減
少すると共に、予混合室に供給する空気の流量を増加し
て、予混合室の燃焼火炎を消火することを特徴とする制
御方法。Also, as in the steady operation, the premixed combustion device is used.
When variations in the operating conditions is small, and detects the state of combustion flame in the combustion chamber, an average excess air ratio of the combustion chamber,
Changes in the operating conditions of the premixed combustion device, such as during transient operation,
When it is large , the flow rate of fuel supplied to both fuel injection valves ,
The flow rate of air supplied to the air passage, the air pressure of the air passage inlet senses a combustion gas pressure and the air temperature of the air passage inlet of the dilution mixing chamber outlet, an average excess air ratio of the combustion chamber, fuel
When the average excess air ratio in the baking chamber is less than the lower limit of the desired range, increase the flow rate of the air supplied to the premixing chamber to
When the excess air ratio is higher than the upper limit of the desired range, the flow rate of the air supplied to the premixing chamber is decreased to bring the average excess air ratio of the combustion chamber into the desired range, and the combustion generated in the premixing chamber Is detected, the flow rate of the fuel sprayed into the premix chamber is decreased, or the flow rate of the air supplied to the premix chamber is increased, or the flow rate of the fuel sprayed into the premix chamber is decreased and the premix is performed. A control method characterized by extinguishing a combustion flame in a premixing chamber by increasing a flow rate of air supplied to the chamber.

【００１９】上記の制御方法において、予混合室に噴霧
する燃料の流量を減少するときには、その減少量分燃焼
室に噴霧する燃料の流量を増加することを特徴とする。
また、予混合室に供給する空気の流量を増加するときに
は、その空気の旋回流のスワール数を減少し、予混合室
に供給する空気の流量を減少するときには、その空気の
旋回流のスワール数を増加することを特徴とする。 In the above control method, spraying into the premix chamber
When reducing the flow rate of fuel,
It is characterized by increasing the flow rate of fuel sprayed into the chamber.
Also, when increasing the flow rate of air supplied to the premix chamber
Reduces the swirl number of its air swirl,
When reducing the flow rate of air supplied to
It is characterized by increasing the swirl number of the swirling flow.

【００２０】[0020]

【発明の効果】予混合室に燃焼火炎が発生すると、予混
合室に噴霧する燃料の流量を減少、または、予混合室に
供給する空気の流量を増加して、予混合室の燃焼火炎を
消火する。When a combustion flame is generated in the premixing chamber, the flow rate of the fuel sprayed into the premixing chamber is reduced or the flow rate of the air supplied to the premixing chamber is increased to prevent the combustion flame in the premixing chamber. extinguish a fire.

【００２１】また、燃焼室の平均空気過剰率または燃焼
温度を求め、予混合室に供給する空気の流量を増減し
て、燃焼室の平均空気過剰率または燃焼温度を所望の範
囲にする。Further, the average excess air ratio or combustion temperature of the combustion chamber is obtained, and the flow rate of the air supplied to the premixing chamber is increased or decreased to bring the average excess air ratio or combustion temperature of the combustion chamber to a desired range.

【００２２】従って、予混合室の異常燃焼をなくし、有
害物の排出を少なくして火炎を安定に保持することがで
きる。Therefore, it is possible to prevent abnormal combustion in the premixing chamber, reduce the emission of harmful substances, and stably maintain the flame.

【００２３】[0023]

【発明の実施の形態】DETAILED DESCRIPTION OF THE INVENTION

＜第１例（図１〜図１０参照）＞ ［予混合燃焼装置］本例の制御方法を実施する予混合燃
焼装置は、自動車用再生式ガスタービンエンジンの燃焼
装置である。<First Example (see FIGS. 1 to 10)> [Premixed Combustion Device] A premixed combustion device for carrying out the control method of the present embodiment is a combustion device for an automobile regenerative gas turbine engine.

【００２４】予混合燃焼装置は、図１に示すように、燃
料と空気を混合する円輪断面形状の予混合室１、燃料と
空気の混合気を燃焼する円形断面形状の燃焼室２と、燃
焼ガスと空気を混合する円形断面形状の希釈混合室３を
順次同芯状に接続し、予混合室１に燃料を噴霧する第１
燃料噴射弁４と、燃焼室２に燃料を噴霧する第２燃料噴
射弁５を設け、予混合室１と希釈混合室３に空気を供給
する円輪断面形状の空気通路６を同芯状に設けている。
両燃料噴射弁４，５に軽油や灯油のような液体燃料を供
給する装置を設けている。As shown in FIG. 1, the premix combustion apparatus comprises a premix chamber 1 having a circular ring cross section for mixing fuel and air, a combustion chamber 2 having a circular cross section for burning a mixture of fuel and air. First, a dilution mixing chamber 3 having a circular cross-sectional shape for mixing combustion gas and air is sequentially connected in a concentric manner, and fuel is sprayed into the premixing chamber 1.
A fuel injection valve 4 and a second fuel injection valve 5 for spraying fuel into the combustion chamber 2 are provided, and an air passage 6 having a circular ring cross section for supplying air to the premixing chamber 1 and the dilution mixing chamber 3 is concentric. It is provided.
A device for supplying a liquid fuel such as light oil or kerosene is provided to both the fuel injection valves 4 and 5.

【００２５】予混合室１は、入口に空気流量調整機構を
設け、予混合室１に流入する燃焼用空気の流量を増減可
能にしている。The premixing chamber 1 is provided with an air flow rate adjusting mechanism at its inlet so that the flow rate of the combustion air flowing into the premixing chamber 1 can be increased or decreased.

【００２６】空気流量調整機構は、図１と図２に示すよ
うに、予混合室１の円環状の入口に固定板７と可動板８
を重合して配置し、固定板７と可動板８にそれぞれ円弧
状の長孔９，１０を貫通し、固定板の長孔９の一部と可
動板の長孔１０の一部を重複して連通し、空気通路６の
空気が両長孔９，１０の連通部分を通過して予混合室１
に流入する構成にしている。回転可能な可動板８の外周
には、歯車部１１を同芯状に形成し、可動板８の歯車部
１１に調整軸１２の先端歯車部を噛み合わせている。調
整軸１２の回転により可動板８を回転し、可動板の長孔
１０が固定板の長孔９と連通した面積を増減して、予混
合室１に流入する燃焼用空気の流量を増減する。As shown in FIGS. 1 and 2, the air flow rate adjusting mechanism has a fixed plate 7 and a movable plate 8 at the annular inlet of the premixing chamber 1.
Are arranged so as to overlap with each other, and the fixed plate 7 and the movable plate 8 are penetrated through arc-shaped long holes 9 and 10, respectively, and a part of the long hole 9 of the fixed plate and a part of the long hole 10 of the movable plate are overlapped. And the air in the air passage 6 passes through the communicating portions of both the long holes 9 and 10 and the premix chamber 1
It is configured to flow into. A gear portion 11 is formed concentrically on the outer periphery of the rotatable movable plate 8, and the tip gear portion of the adjusting shaft 12 is meshed with the gear portion 11 of the movable plate 8. The movable plate 8 is rotated by the rotation of the adjusting shaft 12, and the area where the long hole 10 of the movable plate communicates with the long hole 9 of the fixed plate is increased or decreased to increase or decrease the flow rate of the combustion air flowing into the premix chamber 1. .

【００２７】予混合室１の入口と第１燃料噴射弁４の燃
料噴霧位置の間には、空気旋回調整機構を設け、予混合
室１に流入した燃焼用空気の旋回流のスワール数を増減
可能にしている。An air swirl adjusting mechanism is provided between the inlet of the premix chamber 1 and the fuel spray position of the first fuel injection valve 4 to increase or decrease the swirl number of the swirl flow of the combustion air flowing into the premix chamber 1. It is possible.

【００２８】空気旋回調整機構は、図１と図３に示すよ
うに、予混合室１の円環状部分に固定板７と可動板１３
を対面して配置し、固定板７と可動板１３にそれぞれ凹
凸を円環状に設け、固定板７の凹凸と可動板１３の凹凸
を噛み合わせ、固定板凸部１４の片側の側面とその隣の
可動板凸部１５の側面の間に径方向に沿った非旋回用通
路１６を、固定板凸部１４の他の片側の側面とその隣の
可動板凸部１５の側面の間に略周方向に沿った旋回用通
路１７をそれぞれ形成し、予混合室１に流入した空気が
非旋回用通路１６と旋回用通路１７を通過する構成にし
ている。回転可能な可動板１３の外周には、歯車部１８
を同芯状に形成し、可動板１３の歯車部１８に調整軸１
９の先端歯車部を噛み合わせている。調整軸１９の回転
により可動板１３を回転し、非旋回用通路１６の幅を狭
くまたは広くすると共に、旋回用通路１７の幅を広くま
たは狭くして、予混合室１に流入した燃焼用空気の旋回
流のスワール数を増加または減少する。As shown in FIGS. 1 and 3, the air swirl adjusting mechanism includes a fixed plate 7 and a movable plate 13 in an annular portion of the premix chamber 1.
Are arranged so as to face each other, and the fixed plate 7 and the movable plate 13 are each provided with unevenness in an annular shape, and the unevenness of the fixed plate 7 and the unevenness of the movable plate 13 are engaged with each other. The non-turning passage 16 along the radial direction is formed between the side surfaces of the movable plate convex portion 15 of FIG. 1 and the side surface of the other side of the fixed plate convex portion 14 and the side surface of the movable plate convex portion 15 adjacent thereto. The swirl passages 17 are formed along the direction, and the air flowing into the premix chamber 1 passes through the non-swirl passage 16 and the swirl passage 17. On the outer circumference of the rotatable movable plate 13, there is a gear part 18
Are formed concentrically, and the adjustment shaft 1 is attached to the gear portion 18 of the movable plate 13.
The tip gear part of 9 is meshed. The rotation of the adjusting shaft 19 causes the movable plate 13 to rotate, thereby narrowing or widening the width of the non-swirl passage 16 and widening or narrowing the width of the swirl passage 17 so that the combustion air flowing into the premixing chamber 1 is obtained. Increase or decrease the swirl number of swirl flow.

【００２９】予混合室１の第１燃料噴射弁４の燃料噴霧
位置の下流には、第１火炎検知装置を設け、予混合室１
に発生した燃焼火炎を検知可能にしている。A first flame detection device is provided downstream of the fuel spray position of the first fuel injection valve 4 in the premix chamber 1 and
It is possible to detect the combustion flame generated in the.

【００３０】第１火炎検知装置は、図１に示すように、
耐熱性の高い光ファイバのような光通路２０の広角レン
ズ付きの先端を予混合室１に配置し、光通路２０の基端
をフォトダイオードやフォトトランジスタのような光検
出素子２１に接続している。予混合室１に燃焼火炎が発
生すると、光検出素子２１が出力する。The first flame detecting device, as shown in FIG.
The front end of the light passage 20 with a wide-angle lens, such as an optical fiber having high heat resistance, is arranged in the premix chamber 1, and the base end of the light passage 20 is connected to a light detection element 21 such as a photodiode or a phototransistor. There is. When a combustion flame is generated in the premix chamber 1, the photo detection element 21 outputs.

【００３１】燃焼室２は、図１に示すように、入口側に
同芯状に設けた第２燃料噴射弁５に第２火炎検知装置を
内蔵し、燃焼室２の燃焼火炎の状態量を検知可能にして
いる。As shown in FIG. 1, the combustion chamber 2 has a second fuel injection valve 5 concentrically provided on the inlet side, and a second flame detection device incorporated therein to determine the state quantity of the combustion flame in the combustion chamber 2. Detectable.

【００３２】第２火炎検知装置は、図４に示すように、
第２燃料噴射弁５の軸芯位置の燃料通路２２に耐熱性の
高い光ファイバのような光通路２３を貫通し、光通路２
３の先端部を微粒化用空気通路２４とその中央位置の噴
出孔２５に配置し、光通路２３の広角レンズ付きの先端
を微粒化用空気通路の噴出孔２５から燃焼室２に突出
し、燃料通路２２から突出した光通路２３の基端をフォ
トトランジスタのような光検出素子２６に接続してい
る。光検出素子２６は、燃焼室２に燃焼火炎が発生する
と、その燃焼火炎の状態量に応じた信号を出力する。The second flame detecting device, as shown in FIG.
The fuel passage 22 at the axial position of the second fuel injection valve 5 penetrates the optical passage 23 such as an optical fiber having high heat resistance,
3 is disposed in the atomizing air passage 24 and the ejection hole 25 at the center thereof, and the tip of the optical passage 23 with the wide-angle lens is projected from the ejection hole 25 of the atomizing air passage into the combustion chamber 2 to The base end of the optical passage 23 protruding from the passage 22 is connected to a photodetector element 26 such as a phototransistor. When the combustion flame is generated in the combustion chamber 2, the light detection element 26 outputs a signal according to the state quantity of the combustion flame.

【００３３】燃焼室２には、図１に示すように、混合気
に点火する点火栓２７を設けている。As shown in FIG. 1, the combustion chamber 2 is provided with an ignition plug 27 for igniting the air-fuel mixture.

【００３４】自動車用再生式ガスタービンエンジンは、
予混合燃焼装置の希釈混合室３の出口にガスタービンと
熱交換器の放熱通路を順次接続し、予混合燃焼装置の空
気通路６の入口に熱交換器の受熱通路と空気圧縮機を順
次接続し、ガスタービンの軸と空気圧縮機の軸を連結し
ている。The regenerative gas turbine engine for automobiles is
A gas turbine and a heat radiating passage of a heat exchanger are sequentially connected to the exit of the dilution mixing chamber 3 of the premix combustion apparatus, and a heat receiving passage of the heat exchanger and an air compressor are sequentially connected to the inlet of the air passage 6 of the premix combustion apparatus. The shaft of the gas turbine and the shaft of the air compressor are connected.

【００３５】［制御方法］本例の制御方法は、燃焼室２
の燃焼を制御する方法と、予混合室１の異常燃焼を制御
する方法からなる。[Control Method] The control method of the present example is the combustion chamber 2
And a method of controlling abnormal combustion in the premix chamber 1.

【００３６】燃焼室２の燃焼を制御する方法は、燃焼室
２の平均空気過剰率に基づく制御方法と、燃焼室２の燃
焼温度に基づく制御方法の２例がある。There are two examples of methods for controlling the combustion in the combustion chamber 2; a control method based on the average excess air ratio of the combustion chamber 2 and a control method based on the combustion temperature of the combustion chamber 2.

【００３７】１）燃焼室の平均空気過剰率に基づいて燃
焼室の燃焼を制御する方法 この制御方法は、燃焼室２の燃焼温度即ち予混合燃焼の
火炎温度が空気通路６入口の空気温度と燃焼室２の平均
空気過剰率からほぼ決まるので、燃焼室２の燃焼温度を
最適範囲にするため、燃焼室２の平均空気過剰率を検知
して、予混合室１に流入する燃焼用空気の流量を制御す
る。1) Method of controlling combustion in the combustion chamber based on the average excess air ratio of the combustion chamber In this control method, the combustion temperature of the combustion chamber 2, that is, the flame temperature of premixed combustion is equal to the air temperature at the inlet of the air passage 6. Since it is almost determined from the average excess air ratio of the combustion chamber 2, the average excess air ratio of the combustion chamber 2 is detected and the combustion air flowing into the premix chamber 1 is detected in order to set the combustion temperature of the combustion chamber 2 to the optimum range. Control the flow rate.

【００３８】燃焼室２の平均空気過剰率は、定常運転時
のように燃焼装置の作動条件の変動が小さいときには、
燃焼室２の燃焼火炎光のパワースペクトル比に基づい
て、過渡運転時のように燃焼装置の作動条件の変動が大
きいときには、燃焼装置の圧力損失などに基づいて検知
する。The average excess air ratio of the combustion chamber 2 is as follows when the fluctuation of the operating conditions of the combustion device is small as in the steady operation.
Based on the power spectrum ratio of the combustion flame light in the combustion chamber 2, when the operating condition of the combustion device fluctuates significantly during transient operation, detection is performed based on the pressure loss of the combustion device.

【００３９】ａ 燃焼装置の作動条件の変動が小さいと
きの制御方法 燃焼室２の第２火炎検知装置２３，２６が出力する燃焼
火炎の光パワーは、変動の周波数分析をすると、図５に
示すようなスペクトルになる。このスペクトルにおい
て、特定周波数より高い周波数範囲のパワーペクトルＡ
と低い周波数範囲のパワーペクトルＢの比Ｂ／Ａを求め
る。このパワーペクトル比Ｂ／Ａは、図６に示すよう
に、燃焼室２の平均空気過剰率λと一定の対応関係があ
る。即ち、燃焼火炎光のパワースペクトル比に基づいて
燃焼室２の平均空気過剰率λが求められる。A Control Method When Fluctuations in Operating Conditions of Combustion Device are Small The optical power of the combustion flame output by the second flame detection devices 23, 26 of the combustion chamber 2 is shown in FIG. The spectrum looks like this. In this spectrum, the power spectrum A in the frequency range higher than the specific frequency
Then, the ratio B / A of the power spectrum B in the low frequency range is calculated. As shown in FIG. 6, the power vector ratio B / A has a certain correspondence with the average excess air ratio λ of the combustion chamber 2. That is, the average excess air ratio λ of the combustion chamber 2 is obtained based on the power spectrum ratio of the combustion flame light.

【００４０】制御方法は、図７に示すように、第２火炎
検知装置２３，２６が燃焼室２の燃焼火炎の光パワーを
検知する。光パワーが設定値より小さいと、両燃料噴射
弁４，５への燃料の供給を停止して異常警報を発する。
光パワーが設定値以上であると、光パワーを周波数分析
し、パワーペクトル比Ｂ／Ａを算出し、燃焼室２の平均
空気過剰率λを算出する。In the control method, as shown in FIG. 7, the second flame detecting devices 23 and 26 detect the optical power of the combustion flame in the combustion chamber 2. When the optical power is smaller than the set value, the fuel supply to both fuel injection valves 4 and 5 is stopped and an abnormality alarm is issued.
When the optical power is equal to or higher than the set value, the optical power is subjected to frequency analysis, the power spectrum ratio B / A is calculated, and the average excess air ratio λ of the combustion chamber 2 is calculated.

【００４１】平均空気過剰率λが設定範囲の下限値α，
実施例では３，より小さいと、空気流量調整機構の調整
軸１２を回転して、予混合室１に流入する燃焼用空気の
流量を増加する。また、空気旋回調整機構の調整軸１９
を回転して、予混合室１に流入した燃焼用空気の旋回流
のスワール数を減少する。The average excess air ratio λ is the lower limit value α of the setting range,
In the embodiment, if it is smaller than 3, the adjusting shaft 12 of the air flow rate adjusting mechanism is rotated to increase the flow rate of the combustion air flowing into the premix chamber 1. In addition, the adjustment shaft 19 of the air swirl adjustment mechanism
Is rotated to reduce the swirl number of the swirling flow of the combustion air flowing into the premix chamber 1.

【００４２】平均空気過剰率λが設定範囲の上限値β，
実施例では５，より大きいと、空気流量調整機構の調整
軸１２を回転して、予混合室１に流入する燃焼用空気の
流量を減少する。また、燃焼用空気流量の減少による燃
焼火炎の安定性の悪化を防止するため、空気旋回調整機
構の調整軸１９を回転して、予混合室１に流入した燃焼
用空気の旋回流のスワール数を増加する。The average excess air ratio λ is the upper limit value β of the set range,
In the embodiment, if it is larger than 5, the adjusting shaft 12 of the air flow rate adjusting mechanism is rotated to reduce the flow rate of the combustion air flowing into the premix chamber 1. Further, in order to prevent the deterioration of the stability of the combustion flame due to the decrease in the flow rate of the combustion air, the swirl number of the swirling flow of the combustion air flowing into the premix chamber 1 is rotated by rotating the adjusting shaft 19 of the air swirling adjusting mechanism. To increase.

【００４３】ｂ 燃焼装置の作動条件の変動が大きいと
きの制御方法 両燃料噴射弁４，５に供給する燃料の流量Ｇｆ、空気通
路６に供給する空気の流量Ｇａ、空気通路６入口の空気
圧力Ｐｉ、希釈混合室３出口の燃焼ガス圧力Ｐｏ、空気
通路６入口の空気温度Ｔｉを検知すると、燃焼室２の平
均空気過剰率λは、次式から求められる。ただし、ｎ
は、空気流量Ｇａ中の燃焼用空気流量への分配割合であ
る。Ｃ1とＣ2は、係数である。B Control Method When Fluctuations in Operating Conditions of Combustion Device are Large Flow rate Gf of fuel supplied to both fuel injection valves 4 and 5, flow rate Ga of air supplied to air passage 6, air pressure at inlet of air passage 6 When the Pi, the combustion gas pressure Po at the outlet of the dilution mixing chamber 3 and the air temperature Ti at the inlet of the air passage 6 are detected, the average excess air ratio λ of the combustion chamber 2 is obtained from the following equation. However, n
Is the distribution ratio of the air flow rate Ga to the combustion air flow rate. C 1 and C 2 are coefficients.

【００４４】 ｎ＝１−Ｃ1｛Ｔｉ（Ｐｉ−Ｐｏ）／Ｐｉ｝1/2／Ｇａ λ＝Ｃ2ｎＧａ／Ｇｆ 自動車用再生式ガスタービンエンジンにおいては、燃料
流量Ｇｆは、調量器で調量されるので、燃料流量Ｇｆ用
のセンサを新設する必要はない。また、ガスタービンの
回転数即ち空気圧縮機の回転数と空気圧縮機の出口圧力
は計測され、これらの計測値と空気圧縮機の特性から空
気圧縮機の出口流量即ち空気流量Ｇａが求められるの
で、空気流量Ｇａ用のセンサを新設する必要はない。空
気圧力Ｐｉ、燃焼ガス圧力Ｐｏ、空気温度Ｔｉ用のセン
サは、それぞれ、設ける。N = 1-C 1 {Ti (Pi-Po) / Pi} 1/2 / Ga λ = C 2 nGa / Gf In an automobile regenerative gas turbine engine, the fuel flow rate Gf is a metering device. Since the amount is adjusted, it is not necessary to newly install a sensor for the fuel flow rate Gf. Further, the rotation speed of the gas turbine, that is, the rotation speed of the air compressor and the outlet pressure of the air compressor are measured, and the outlet flow rate of the air compressor, that is, the air flow rate Ga is obtained from these measured values and the characteristics of the air compressor. It is not necessary to newly install a sensor for the air flow rate Ga. Sensors for the air pressure Pi, the combustion gas pressure Po, and the air temperature Ti are provided respectively.

【００４５】制御方法は、図８に示すように、第２火炎
検知装置２３，２６が燃焼室２の燃焼火炎の光パワーを
検知する。光パワーが設定値より小さいと、燃料の供給
を停止して異常警報を発する。光パワーが設定値以上で
あると、燃料流量Ｇｆ、空気流量Ｇａ、空気圧力Ｐｉ、
燃焼ガス圧力Ｐｏと空気温度Ｔｉを検知し、分配割合ｎ
を算出して平均空気過剰率λを算出する。In the control method, as shown in FIG. 8, the second flame detecting devices 23 and 26 detect the optical power of the combustion flame in the combustion chamber 2. When the optical power is smaller than the set value, the fuel supply is stopped and an abnormal alarm is issued. When the optical power is equal to or higher than the set value, the fuel flow rate Gf, the air flow rate Ga, the air pressure Pi,
The combustion gas pressure Po and the air temperature Ti are detected, and the distribution ratio n
Is calculated to calculate the average excess air ratio λ.

【００４６】平均空気過剰率λが設定範囲の下限値α，
実施例では３，より小さいと、予混合室１に流入する燃
焼用空気の流量を空気流量調整機構で増加し、予混合室
１に流入した燃焼用空気の旋回流のスワール数を空気旋
回調整機構で減少する。The average excess air ratio λ is the lower limit value α of the setting range,
In the embodiment, when it is smaller than 3, the flow rate of the combustion air flowing into the premixing chamber 1 is increased by the air flow rate adjusting mechanism, and the swirl number of the swirling flow of the combustion air flowing into the premixing chamber 1 is adjusted by the air swirling. Reduced by mechanism.

【００４７】平均空気過剰率λが設定範囲の上限値β，
実施例では５，より大きいと、予混合室１に流入する燃
焼用空気の流量を空気流量調整機構で減少し、予混合室
１に流入した燃焼用空気の旋回流のスワール数を空気旋
回調整機構で増加する。The average excess air ratio λ is the upper limit value β of the set range,
In the embodiment, when it is larger than 5, the flow rate of the combustion air flowing into the premixing chamber 1 is reduced by the air flow rate adjusting mechanism, and the swirl number of the swirling flow of the combustion air flowing into the premixing chamber 1 is adjusted by the air swirling. Increase with the mechanism.

【００４８】平均空気過剰率λが設定範囲であると、前
回のサンプリング時との変動を修正するため、今回の平
均空気過剰率λが前回の平均空気過剰率λｐより小さい
と、予混合室１の燃焼用空気は、流量を増加してスワー
ル数を減少する。今回の平均空気過剰率λが前回の平均
空気過剰率λｐより大きいと、予混合室１の燃焼用空気
は、流量を減少してスワール数を増加する。If the average excess air ratio λ is within the set range, the premixing chamber 1 is adjusted if the average excess air ratio λ of this time is smaller than the previous average excess air ratio λp in order to correct the variation from the previous sampling. The combustion air has an increased flow rate and a reduced swirl number. When the current average excess air ratio λ is larger than the previous average excess air ratio λp, the flow rate of the combustion air in the premix chamber 1 is decreased and the swirl number is increased.

【００４９】２）燃焼室の燃焼温度に基づいて燃焼室の
燃焼を制御する方法 この制御方法は、図９に示すように、上記１）ａの制御
方法と同様に、燃焼室２の燃焼火炎光のパワースペクト
ル比に基づいて燃焼室２の平均空気過剰率λを算出す
る。また、上記１）ｂの制御方法と同様に、空気通路６
に供給する空気の流量Ｇａ、空気通路６入口の空気圧力
Ｐｉ、希釈混合室３出口の燃焼ガス圧力Ｐｏと空気通路
６入口の空気温度Ｔｉに基づいて空気流量Ｇａ中の燃焼
用空気流量への分配割合ｎを算出する。そして、燃焼室
２の平均的な燃焼温度Ｔは、次式から求める。ただし、
Ｃ3は、係数である。2) Method for controlling combustion in the combustion chamber based on the combustion temperature in the combustion chamber As shown in FIG. 9, this control method is similar to the control method in 1) a above, and the combustion flame in the combustion chamber 2 is the same. The average excess air ratio λ of the combustion chamber 2 is calculated based on the power spectrum ratio of light. Further, in the same manner as the control method of 1) b above, the air passage 6
To the combustion air flow rate in the air flow rate Ga based on the flow rate Ga of the air supplied to the air, the air pressure Pi at the air passage 6 inlet, the combustion gas pressure Po at the dilution mixing chamber 3 outlet and the air temperature Ti at the air passage 6 inlet. The distribution ratio n is calculated. Then, the average combustion temperature T of the combustion chamber 2 is obtained from the following equation. However,
C 3 is a coefficient.

【００５０】Ｔ＝Ｔｉ＋Ｃ3ｎＧａ／λ 燃焼温度Ｔが設定範囲の下限値γ，実施例では１６００
℃，より小さいと、予混合室１に流入する燃焼用空気の
流量を空気流量調整機構で減少し、予混合室１に流入し
た燃焼用空気の旋回流のスワール数を空気旋回調整機構
で増加する。T = Ti + C 3 nGa / λ The combustion temperature T is the lower limit value γ of the set range, 1600 in the embodiment.
When the temperature is smaller than ℃, the flow rate of the combustion air flowing into the premix chamber 1 is decreased by the air flow rate adjusting mechanism, and the swirl number of the swirling flow of the combustion air flowing into the premixing chamber 1 is increased by the air swirling adjusting mechanism. To do.

【００５１】燃焼温度Ｔが設定範囲の上限値δ，実施例
では１８００℃，より大きいと、予混合室１に流入する
燃焼用空気の流量を空気流量調整機構で増加し、予混合
室１に流入した燃焼用空気の旋回流のスワール数を空気
旋回調整機構で減少する。When the combustion temperature T is higher than the upper limit value δ of the set range, 1800 ° C. in the embodiment, the flow rate of the combustion air flowing into the premixing chamber 1 is increased by the air flow rate adjusting mechanism so that the premixing chamber 1 enters the premixing chamber 1. The swirl number of the swirling flow of the inflowing combustion air is reduced by the air swirl adjusting mechanism.

【００５２】燃焼温度Ｔが設定範囲γ〜δであると、前
回のサンプリング時との変動を修正するため、今回の燃
焼温度Ｔが前回の燃焼温度Ｔｐより小さいと、予混合室
１の燃焼用空気は、流量を減少してスワール数を増加す
る。今回の燃焼温度Ｔが前回の燃焼温度Ｔｐより大きい
と、予混合室１の燃焼用空気は、流量を増加してスワー
ル数を減少する。If the combustion temperature T is in the set range γ to δ, the fluctuation from the previous sampling is corrected. Therefore, if the current combustion temperature T is lower than the previous combustion temperature Tp, the combustion temperature in the premixing chamber 1 is reduced. Air reduces flow rate and increases swirl number. When the current combustion temperature T is higher than the previous combustion temperature Tp, the flow rate of the combustion air in the premix chamber 1 increases and the swirl number decreases.

【００５３】３）予混合室の異常燃焼を制御する方法 この制御方法は、図１０に示すように、第２火炎検知装
置２３，２６が燃焼室２の燃焼火炎の光パワーを検知し
てその光パワーが設定値以上であることを確認した後、
第１火炎検知装置２０，２１が予混合室１の燃焼火炎の
光パワーを検知してその光パワーが設定値以上である
と、異常警報を発し、燃焼室の点火栓２７を発火し、第
２燃料噴射弁５が停止中であれば、第２燃料噴射弁５か
ら燃焼室２に小流量の燃料を噴霧し、第２燃料噴射弁５
が作動中であれば、第２燃料噴射弁５から燃焼室２に噴
霧する燃料の流量を少し増加し、燃焼室２の燃焼火炎の
光パワーが設定値以上であると、第１燃料噴射弁４から
予混合室１に噴霧する燃料の流量を第２燃料噴射弁５の
燃料流量の増加分減少する。また、予混合室１に流入す
る燃焼用空気の流量を空気流量調整機構で増加し、予混
合室１に流入した燃焼用空気の旋回流のスワール数を空
気旋回調整機構で減少する。3) Method for controlling abnormal combustion in the premix chamber In this control method, as shown in FIG. 10, the second flame detectors 23 and 26 detect the optical power of the combustion flame in the combustion chamber 2 and After confirming that the optical power is above the set value,
The first flame detection devices 20 and 21 detect the optical power of the combustion flame in the premix chamber 1 and when the optical power is equal to or higher than a set value, an abnormal alarm is issued and the ignition plug 27 of the combustion chamber is ignited. If the second fuel injection valve 5 is stopped, a small flow rate of fuel is sprayed from the second fuel injection valve 5 into the combustion chamber 2, and the second fuel injection valve 5
Is operating, the flow rate of the fuel sprayed from the second fuel injection valve 5 to the combustion chamber 2 is slightly increased, and when the optical power of the combustion flame in the combustion chamber 2 is equal to or higher than the set value, the first fuel injection valve 4, the flow rate of the fuel sprayed into the premix chamber 1 is reduced by the increase in the fuel flow rate of the second fuel injection valve 5. Further, the flow rate of the combustion air flowing into the premix chamber 1 is increased by the air flow rate adjusting mechanism, and the swirl number of the swirling flow of the combustion air flowing into the premix chamber 1 is decreased by the air swirling adjusting mechanism.

【００５４】予混合室１に噴霧する燃料流量が零になら
ず、かつ、予混合室１の燃焼火炎の光パワーが設定値以
上である限り、上記のように、燃焼室２の燃焼火炎の光
パワーが設定値以上であることを確認しつつ、燃焼室２
に噴霧する燃料流量の増加と予混合室１に噴霧する燃料
流量の減少及び予混合室１の燃焼用空気の流量増加とス
ワール数減少を繰り返し、燃焼室２と予混合室１に噴霧
する燃料流量の合計流量を一定に保持した上で、予混合
室１に発生した燃焼火炎を消火する。As long as the flow rate of the fuel sprayed in the premix chamber 1 does not become zero and the optical power of the combustion flame in the premix chamber 1 is equal to or more than the set value, the combustion flame in the combustion chamber 2 is changed as described above. Combustion chamber 2 while confirming that the optical power is above the set value
Of the fuel sprayed to the combustion chamber 2 and the premix chamber 1 by repeating the increase of the flow rate of the fuel sprayed to the premix chamber 1 and the decrease of the flow rate of the fuel sprayed to the premix chamber 1 and the increase of the flow rate of the combustion air in the premix chamber 1 and the reduction of the swirl number. The combustion flame generated in the premixing chamber 1 is extinguished while keeping the total flow rate constant.

【００５５】燃焼室２の燃焼火炎の光パワーが設定値よ
り小さくなれば、また、予混合室１に噴霧する燃料流量
が零になっても、予混合室１の燃焼火炎の光パワーが設
定値以上であれば、両燃料噴射弁４，５への燃料の供給
を停止し、異常警報を発する。If the light power of the combustion flame in the combustion chamber 2 becomes smaller than the set value, and the light power of the combustion flame in the premix chamber 1 is set even if the flow rate of the fuel sprayed into the premix chamber 1 becomes zero. If the value is equal to or more than the value, the supply of fuel to both fuel injection valves 4 and 5 is stopped and an abnormal alarm is issued.

【００５６】予混合室１に発生した燃焼火炎が消火され
ると、逆に、燃焼室２に噴霧する燃料流量を減少し、予
混合室１に噴霧する燃料流量を増加して予混合室１の燃
焼用空気の流量を減少すると共にスワール数を増加す
る。When the combustion flame generated in the premix chamber 1 is extinguished, conversely, the flow rate of the fuel sprayed into the combustion chamber 2 is decreased and the flow rate of the fuel sprayed into the premix chamber 1 is increased to increase the flow rate of the premix chamber 1. The flow rate of combustion air is reduced and the swirl number is increased.

【００５７】＜第２例（図１１と図１２参照）＞自動車
用再生式ガスタービンエンジンに用いられる予混合燃焼
装置は、図１１に示すように、複数の円管形状の予混合
室３１、主燃焼室３２と希釈混合室３３を順次接続し、
主燃焼室３２の上流端に副燃焼室３４を接続し、各予混
合室３１にそれぞれ第１燃料噴射弁３５を設け、副燃焼
室３４に第２燃料噴射弁３６を設け、予混合室３１、副
燃焼室３４、主燃焼室３２と希釈混合室３３に空気を供
給する空気通路３７を設けている。<Second Example (see FIGS. 11 and 12)> As shown in FIG. 11, a premixing combustion apparatus used in a regenerative gas turbine engine for an automobile has a plurality of circular tube-shaped premixing chambers 31, The main combustion chamber 32 and the dilution mixing chamber 33 are sequentially connected,
The auxiliary combustion chamber 34 is connected to the upstream end of the main combustion chamber 32, each premixing chamber 31 is provided with a first fuel injection valve 35, and each auxiliary combustion chamber 34 is provided with a second fuel injection valve 36. An air passage 37 for supplying air to the auxiliary combustion chamber 34, the main combustion chamber 32 and the dilution mixing chamber 33 is provided.

【００５８】各予混合室３１の空気流入口と副燃焼室３
４の空気流入口には、それぞれ、空気旋回機構を設けて
いる。Air inlet of each premixing chamber 31 and auxiliary combustion chamber 3
An air swirling mechanism is provided at each of the four air inlets.

【００５９】各予混合室３１の下流位置には、図１１と
図１２に示すように、それぞれ、火炎検知装置を設け、
各予混合室３１に発生した燃焼火炎を検知可能にしてい
る。火炎検知装置は、光通路３８の広角レンズ付きの先
端を予混合室３１の中心位置に上流側向きに配置し、光
通路３８の基端を光検出素子３９に接続している。As shown in FIGS. 11 and 12, flame detecting devices are provided at the downstream positions of the premixing chambers 31, respectively.
The combustion flame generated in each premixing chamber 31 can be detected. In the flame detection device, the tip of the light passage 38 with the wide-angle lens is arranged upstream in the central position of the premix chamber 31, and the base end of the light passage 38 is connected to the light detection element 39.

【００６０】副燃焼室３４には、図１１に示すように、
点火栓４０を設けている。In the auxiliary combustion chamber 34, as shown in FIG.
A spark plug 40 is provided.

【００６１】本例の制御方法は、予混合室の異常燃焼を
制御する方法である。いずれかの火炎検知装置３８，３
９が予混合室３１の燃焼火炎の光パワーを検知してその
光パワーが設定値以上であると、異常警報を発し、副燃
焼室３４の点火栓４０を発火し、副燃焼室３４に第２燃
料噴射弁３６から噴霧する燃料の流量を少し増加し、燃
焼火炎が発生した予混合室３１に第１燃料噴射弁３５か
ら噴霧する燃料の流量を第２燃料噴射弁３６の燃料流量
の増加分減少する。The control method of this example is a method of controlling abnormal combustion in the premix chamber. Any flame detection device 38, 3
9 detects the optical power of the combustion flame of the premix chamber 31 and when the optical power is equal to or higher than a set value, an abnormal alarm is issued, the spark plug 40 of the auxiliary combustion chamber 34 is ignited, and the auxiliary combustion chamber 34 The flow rate of the fuel sprayed from the second fuel injection valve 36 is slightly increased, and the flow rate of the fuel sprayed from the first fuel injection valve 35 to the premix chamber 31 in which the combustion flame is generated is increased by the fuel flow rate of the second fuel injection valve 36. Decrease by a minute.

【００６２】燃焼火炎が発生した予混合室３１に噴霧す
る燃料流量が零にならず、かつ、燃焼火炎が発生した予
混合室３１の燃焼火炎の光パワーが設定値以上である限
り、上記のように、副燃焼室３４に噴霧する燃料流量の
増加と予混合室３１に噴霧する燃料流量の減少を繰り返
し、副燃焼室３４と予混合室３１に噴霧する燃料流量の
合計流量を一定に保持した上で、予混合室３１に発生し
た燃焼火炎を消火する。As long as the flow rate of the fuel sprayed into the premixing chamber 31 in which the combustion flame is generated does not become zero and the optical power of the combustion flame in the premixing chamber 31 in which the combustion flame is generated is the set value or more, As described above, the increase in the flow rate of the fuel sprayed into the auxiliary combustion chamber 34 and the decrease in the flow rate of the fuel sprayed into the premixing chamber 31 are repeated to keep the total flow rate of the fuel flows sprayed into the auxiliary combustion chamber 34 and the premixing chamber 31 constant. Then, the combustion flame generated in the premix chamber 31 is extinguished.

【００６３】燃焼火炎が発生した予混合室３１に噴霧す
る燃料流量が零になっても、その予混合室３１の燃焼火
炎の光パワーが設定値以上であれば、すべての燃料噴射
弁３５，３６への燃料の供給を停止し、異常警報を発す
る。Even if the flow rate of the fuel sprayed into the premix chamber 31 in which the combustion flame is generated becomes zero, if the optical power of the combustion flame in the premix chamber 31 is equal to or higher than the set value, all the fuel injection valves 35, The fuel supply to 36 is stopped and an abnormal alarm is issued.

【００６４】予混合室３１に発生した燃焼火炎が消火さ
れると、逆に、副燃焼室３４に噴霧する燃料流量を減少
して、予混合室３１に噴霧する燃料流量を増加する。When the combustion flame generated in the premix chamber 31 is extinguished, the flow rate of fuel sprayed into the auxiliary combustion chamber 34 is decreased, and the flow rate of fuel sprayed into the premix chamber 31 is increased.

【００６５】＜第３例（図１３と図１４参照）＞自動車
用再生式ガスタービンエンジンに用いられる予混合燃焼
装置は、図１３に示すように、円輪断面形状の予混合室
４１、主燃焼室４２と希釈混合室４３を順次接続し、主
燃焼室４２の上流端に副燃焼室４４を接続し、予混合室
４１に燃料を噴霧する第１燃料噴射弁４５と、副燃焼室
４４に燃料を噴霧する第２燃料噴射弁４６を設け、予混
合室４１、副燃焼室４４と主燃焼室４２に空気を供給す
る空気通路４７を設けている。<Third Example (see FIGS. 13 and 14)> As shown in FIG. 13, a premixing combustion apparatus used in a regenerative gas turbine engine for an automobile has a premixing chamber 41 having a circular ring cross section and a main mixing chamber 41. The combustion chamber 42 and the dilution mixing chamber 43 are sequentially connected, the auxiliary combustion chamber 44 is connected to the upstream end of the main combustion chamber 42, and the first fuel injection valve 45 for spraying fuel into the premixing chamber 41 and the auxiliary combustion chamber 44 are connected. A second fuel injection valve 46 for spraying fuel is provided in the above, and an air passage 47 for supplying air to the premixing chamber 41, the auxiliary combustion chamber 44 and the main combustion chamber 42 is provided.

【００６６】予混合室４１の空気流入口と副燃焼室４４
の空気流入口には、それぞれ、空気旋回機構を設けてい
る。予混合室４１の下流位置には、図１３に示すよう
に、混合気の一部を燃焼する円環形状のハニカム型触媒
４８を設けている。予混合室４１の触媒４８上流側位置
には、図１３と図１４に示すように、広角レンズ付きの
光通路４９と光検出素子５０を順次接続した複数の火炎
検知装置を設け、予混合室４１に発生した燃焼火炎を検
知可能にしている。副燃焼室４４には、点火栓５１を設
けている。Air inlet of premixing chamber 41 and auxiliary combustion chamber 44
An air swirling mechanism is provided at each of the air inlets. As shown in FIG. 13, an annular honeycomb catalyst 48 that burns a part of the air-fuel mixture is provided at a position downstream of the premixing chamber 41. As shown in FIGS. 13 and 14, at a position upstream of the catalyst 48 in the premixing chamber 41, a plurality of flame detecting devices in which an optical passage 49 with a wide-angle lens and a photodetecting element 50 are sequentially connected are provided. The combustion flame generated at 41 can be detected. A spark plug 51 is provided in the auxiliary combustion chamber 44.

【００６７】本例の異常燃焼制御方法は、いずれかの火
炎検知装置４９，５０が予混合室４１の燃焼火炎の光パ
ワーを検知してその光パワーが設定値以上であると、異
常警報を発し、点火栓５１を発火し、副燃焼室４４に第
２燃料噴射弁４６から噴霧する燃料の流量を少し増加
し、予混合室４１に第１燃料噴射弁４５から噴霧する燃
料の流量を第２燃料噴射弁４６の燃料流量の増加分減少
する。In the abnormal combustion control method of this example, one of the flame detection devices 49 and 50 detects the optical power of the combustion flame in the premixing chamber 41, and when the optical power is equal to or higher than the set value, an abnormal alarm is issued. Fired, the ignition plug 51 is ignited, the flow rate of the fuel sprayed from the second fuel injection valve 46 to the auxiliary combustion chamber 44 is slightly increased, and the flow rate of the fuel sprayed from the first fuel injection valve 45 to the premixing chamber 41 is set to the first level. 2 The fuel flow rate of the fuel injection valve 46 is decreased by the increase.

【００６８】予混合室４１に噴霧する燃料流量が零にな
らず、かつ、予混合室４１の燃焼火炎の光パワーが設定
値以上である限り、上記のように、副燃焼室４４に噴霧
する燃料流量の増加と予混合室４１に噴霧する燃料流量
の減少を繰り返し、副燃焼室４４と予混合室４１に噴霧
する燃料流量の合計流量を一定に保持した上で、予混合
室４１に発生した燃焼火炎を消火する。As long as the flow rate of the fuel sprayed into the premix chamber 41 does not become zero and the light power of the combustion flame in the premix chamber 41 is equal to or more than the set value, it is sprayed into the auxiliary combustion chamber 44 as described above. Generated in the premixing chamber 41 after repeatedly increasing the fuel flow rate and decreasing the fuel flow rate sprayed in the premixing chamber 41 to keep the total flow rate of the fuel flow sprayed in the auxiliary combustion chamber 44 and the premixing chamber 41 constant. Extinguish the burning flame.

【００６９】予混合室４１に噴霧する燃料流量が零にな
っても、予混合室４１の燃焼火炎の光パワーが設定値以
上であれば、すべての燃料噴射弁４５，４６への燃料の
供給を停止し、異常警報を発する。Even if the flow rate of the fuel sprayed into the premix chamber 41 becomes zero, if the optical power of the combustion flame in the premix chamber 41 is equal to or more than the set value, the fuel is supplied to all the fuel injection valves 45 and 46. Stop and issue an abnormal alarm.

【００７０】予混合室４１に発生した燃焼火炎が消火さ
れると、逆に、副燃焼室４４に噴霧する燃料流量を減少
して、予混合室４１に噴霧する燃料流量を増加する。When the combustion flame generated in the premix chamber 41 is extinguished, conversely, the flow rate of fuel sprayed in the auxiliary combustion chamber 44 is decreased and the flow rate of fuel sprayed in the premix chamber 41 is increased.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施形態の第１例の制御方法を実施す
る予混合燃焼装置の縦断面図。FIG. 1 is a vertical cross-sectional view of a premixed combustion device that implements a control method according to a first example of an embodiment of the present invention.

【図２】同予混合燃焼装置の空気流量調整機構の断面図
であって、図１のＡ−Ａ線断面図。FIG. 2 is a cross-sectional view of the air flow rate adjusting mechanism of the premixed combustion device, which is a cross-sectional view taken along the line AA of FIG.

【図３】同予混合燃焼装置の空気旋回調整機構の断面図
であって、図１のＡ−Ａ線断面図。3 is a cross-sectional view of the air swirl adjusting mechanism of the premixed combustion device, which is a cross-sectional view taken along the line AA of FIG. 1. FIG.

【図４】同予混合燃焼装置の第２燃料噴射弁に内蔵の第
２火炎検知装置の縦断面図。FIG. 4 is a vertical cross-sectional view of a second flame detection device incorporated in a second fuel injection valve of the premixed combustion device.

【図５】同予混合燃焼装置における燃焼室の燃焼火炎光
のパワースペクトルの図。FIG. 5 is a diagram of a power spectrum of combustion flame light of a combustion chamber in the premixed combustion device.

【図６】同予混合燃焼装置における燃焼室のパワースペ
クトル比と平均空気過剰率の関係を示す図。FIG. 6 is a view showing a relationship between a power spectrum ratio of a combustion chamber and an average excess air ratio in the premixed combustion device.

【図７】同予混合燃焼装置において作動条件の変動が小
さいときに平均空気過剰率に基づいて燃焼室の燃焼を制
御する方法のフローチャート。FIG. 7 is a flow chart of a method of controlling combustion in a combustion chamber based on an average excess air ratio when the operating conditions have small fluctuations in the premixed combustion apparatus.

【図８】同予混合燃焼装置において作動条件の変動が大
きいときに平均空気過剰率に基づいて燃焼室の燃焼を制
御する方法のフローチャート。FIG. 8 is a flowchart of a method for controlling combustion in a combustion chamber based on an average excess air ratio when the operating conditions vary greatly in the premixed combustion apparatus.

【図９】同予混合燃焼装置において燃焼温度に基づいて
燃焼室の燃焼を制御する方法のフローチャート。FIG. 9 is a flowchart of a method for controlling combustion in a combustion chamber based on a combustion temperature in the premixed combustion device.

【図１０】同予混合燃焼装置において予混合室の異常燃
焼を制御する方法のフローチャート。FIG. 10 is a flowchart of a method for controlling abnormal combustion in the premix chamber in the premix combustion apparatus.

【図１１】実施形態の第２例の制御方法を実施する予混
合燃焼装置の縦断面図。FIG. 11 is a vertical cross-sectional view of a premixed combustion device that implements the control method of the second example of the embodiment.

【図１２】同予混合燃焼装置の火炎検知装置位置の断面
図。FIG. 12 is a sectional view of a flame detection device position of the premixed combustion device.

【図１３】実施形態の第３例の制御方法を実施する予混
合燃焼装置の縦断面図。FIG. 13 is a vertical cross-sectional view of a premixed combustion device that implements the control method of the third example of the embodiment.

【図１４】同予混合燃焼装置の火炎検知装置位置の断面
図。FIG. 14 is a sectional view of a flame detection device position of the premixed combustion device.

【符号の説明】[Explanation of symbols]

１ 予混合室 ２ 燃焼室 ３ 希釈混合室 ４ 第１燃料噴射弁 ５ 第２燃料噴射弁 ６ 空気通路 ７〜１２ 空気流量調整機構 ７，１３〜１９ 空気旋回調整機構 ２０，２１ 第１火炎検知装置 ２３，２６ 第２火炎検知装置 ３１ 予混合室 ３２ 主燃焼室 ３３ 希釈混合室 ３４ 副燃焼室 ３５ 第１燃料噴射弁 ３６ 第２燃料噴射弁 ３７ 空気通路 ３８，３９ 火炎検知装置 ４１ 予混合室 ４２ 主燃焼室 ４３ 希釈混合室 ４４ 副燃焼室 ４５ 第１燃料噴射弁 ４６ 第２燃料噴射弁 ４７ 空気通路 ４９，５０ 火炎検知装置 1 premix room 2 combustion chamber 3 dilution mixing chamber 4 First fuel injection valve 5 Second fuel injection valve 6 air passages 7-12 Air flow rate adjustment mechanism 7, 13-19 Air swirl adjustment mechanism 20,21 1st flame detection device 23,26 Second flame detection device 31 premix room 32 Main combustion chamber 33 dilution mixing chamber 34 Secondary combustion chamber 35 First Fuel Injection Valve 36 Second fuel injection valve 37 Air passage 38,39 Flame detector 41 premixing chamber 42 Main combustion chamber 43 Dilution mixing chamber 44 Secondary combustion chamber 45 First fuel injection valve 46 Second fuel injection valve 47 air passage 49,50 Flame detector

フロントページの続き (56)参考文献 特開 平７−54671（ＪＰ，Ａ) 特開 平６−257467（ＪＰ，Ａ) 特開 平７−119492（ＪＰ，Ａ) 特開 平６−323165（ＪＰ，Ａ) 特開 平５−106841（ＪＰ，Ａ) 特開 平７−63333（ＪＰ，Ａ) 特開 平７−332671（ＪＰ，Ａ) 特開 平７−301129（ＪＰ，Ａ) 特開 平６−93882（ＪＰ，Ａ) 特開 平６−257748（ＪＰ，Ａ) 特開 平６−213448（ＪＰ，Ａ) 実開 平２−72334（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F02C 1/00 - 9/58 F23R 3/00 - 7/00 Continuation of the front page (56) Reference JP-A-7-54671 (JP, A) JP-A-6-257467 (JP, A) JP-A-7-119492 (JP, A) JP-A-6-323165 (JP , A) JP 5-106841 (JP, A) JP 7-63333 (JP, A) JP 7-332671 (JP, A) JP 7-301129 (JP, A) JP 6-93882 (JP, A) JP-A-6-257748 (JP, A) JP-A-6-213448 (JP, A) Actually developed 2-72334 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F02C 1/00-9/58 F23R 3/00-7/00

Claims (5)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 燃料と空気を混合する予混合室、燃料と
空気の混合気を燃焼する燃焼室と、燃焼ガスと空気を混
合する希釈混合室を順次接続し、予混合室に燃料を噴霧
する第１燃料噴射弁と、燃焼室に燃料を噴霧する第２燃
料噴射弁を設け、予混合室と希釈混合室または燃焼室に
空気を供給する空気通路を設けた予混合燃焼装置におい
て、 燃焼室の燃焼火炎の状態量を検知して燃焼室の平均空気
過剰率を求め、空気通路に供給する空気の流量、空気通
路入口の空気圧力、希釈混合室出口の燃焼ガス圧力と空
気通路入口の空気温度を検知し、燃焼室の平均空気過剰
率、空気通路に供給する空気の流量、空気通路入口の空
気圧力、希釈混合室出口の燃焼ガス圧力と空気通路入口
の空気温度に基づいて燃焼室の燃焼温度を求め、 燃焼温度が所望の範囲の下限値より小さいときには、予
混合室に供給する空気の流量を減少し、燃焼温度が所望
の範囲の上限値より大きいときには、予混合室に供給す
る空気の流量を増加して、燃焼室の燃焼温度を所望の範
囲内にし、 予混合室に発生した燃焼を検知すると、予混合室に噴霧
する燃料の流量を減少するか、もしくは予混合室に供給
する空気の流量を増加し、または、予混合室に噴霧する
燃料の流量を減少すると共に、予混合室に供給する空気
の流量を増加して、予混合室の燃焼火炎を消火すること
を特徴とする制御方法。1. A premixing chamber for mixing fuel and air, a combustion chamber for burning a mixture of fuel and air, and a dilution mixing chamber for mixing combustion gas and air are sequentially connected, and fuel is sprayed into the premixing chamber. In the premixed combustion device, a first fuel injection valve for controlling the fuel injection and a second fuel injection valve for spraying fuel into the combustion chamber are provided, and an air passage for supplying air to the premixing chamber and the dilution mixing chamber or the combustion chamber is provided. The average amount of excess air in the combustion chamber is determined by detecting the state quantity of the combustion flame in the chamber, and the flow rate of the air supplied to the air passage, the air pressure at the air passage inlet, the combustion gas pressure at the dilution mixing chamber outlet, and the air passage inlet Detects the air temperature and detects excess air in the combustion chamber
Rate, the flow rate of air supplied to the air passage, the air at the inlet of the air passage
Air pressure, combustion gas pressure at the outlet of the dilution chamber and air passage inlet
Calculate the combustion temperature of the combustion chamber based on the air temperature of, and when the combustion temperature is lower than the lower limit of the desired range, reduce the flow rate of the air supplied to the premix chamber so that the combustion temperature exceeds the upper limit of the desired range. When it is large, the flow rate of the air supplied to the premix chamber is increased to bring the combustion temperature of the combustion chamber within the desired range, and when the combustion that occurs in the premix chamber is detected, the flow rate of the fuel sprayed to the premix chamber is changed. Decrease or increase the flow rate of air supplied to the premix chamber, or decrease the flow rate of fuel sprayed into the premix chamber and increase the flow rate of air supplied to the premix chamber A control method characterized by extinguishing a combustion flame in a room. 【請求項２】 燃料と空気を混合する予混合室、燃料と
空気の混合気を燃焼する燃焼室と、燃焼ガスと空気を混
合する希釈混合室を順次接続し、予混合室に燃料を噴霧
する第１燃料噴射弁と、燃焼室に燃料を噴霧する第２燃
料噴射弁を設け、予混合室と希釈混合室または燃焼室に
空気を供給する空気通路を設けた予混合燃焼装置におい
て、 定常運転時のように予混合燃焼装置の作動条件の変動が
小さいときには、燃焼室の燃焼火炎の状態量を検知し
て、燃焼室の平均空気過剰率を求め、 過渡運転時のように予混合燃焼装置の作動条件の変動が
大きいときには、両燃料噴射弁に供給する燃料の流量、
空気通路に供給する空気の流量、空気通路入口の空気圧
力、希釈混合室出口の燃焼ガス圧力と空気通路入口の空
気温度を検知して、燃焼室の平均空気過剰率を求め、 燃焼室の平均空気過剰率が所望の範囲の下限値より小さ
いときには、予混合室に供給する空気の流量を増加し、
平均空気過剰率が所望の範囲の上限値より大きいときに
は、予混合室に供給する空気の流量を減少して、燃焼室
の平均空気過剰率を所望の範囲内にし、 予混合室に発生した燃焼を検知すると、予混合室に噴霧
する燃料の流量を減少するか、もしくは予混合室に供給
する空気の流量を増加し、または、予混合室に噴霧する
燃料の流量を減少すると共に、予混合室に供給する空気
の流量を増加して、予混合室の燃焼火炎を消火する こと
を特徴とする制御方法。2. A premixing chamber for mixing fuel and air, and fuel.
A combustion chamber that burns a mixture of air and a mixture of combustion gas and air.
Connect the diluting mixing chambers in sequence and spray the fuel into the premixing chamber
The first fuel injection valve that performs the operation and the second fuel that sprays the fuel into the combustion chamber
A fuel injection valve is installed in the premixing chamber and the dilution mixing chamber or the combustion chamber.
Premixed combustion device with air passage for supplying air
When the operating conditions of the premixed combustion device are small, such as during steady operation , the state quantity of the combustion flame in the combustion chamber is detected and the average excess air ratio in the combustion chamber is calculated. When the operating conditions of the premixed combustion device fluctuate significantly, the flow rate of fuel supplied to both fuel injection valves,
The flow rate of air supplied to the air passage, the air pressure of the air passage inlet senses a combustion gas pressure and the air temperature of the air passage inlet of the dilution mixing chamber outlet, Me average air excess ratio in the combustion chamber determined, the combustion chamber Average excess air ratio is less than the lower limit of the desired range
If not, increase the flow rate of air supplied to the premix chamber,
When the average excess air ratio is greater than the upper limit of the desired range
Reduce the flow rate of air supplied to the premix chamber
When the average excess air ratio of is within the desired range and combustion that occurs in the premix chamber is detected, it is sprayed into the premix chamber.
Fuel flow to reduce or supply to premix chamber
Increase the flow rate of air to be sprayed or spray into the premix chamber
Air supplied to the premix chamber while reducing the fuel flow rate
The control method is characterized by extinguishing the combustion flame in the premix chamber by increasing the flow rate of . 【請求項３】 請求項１に記載の制御方法において、 燃焼室の燃焼火炎の状態量を検知して燃焼室の平均空気
過剰率λを求め、 空気通路に供給する空気流量Ｇａ、空気通路入口の空気
圧力Ｐｉ、希釈混合室出口の燃焼ガス圧力Ｐｏと空気通
路入口の空気温度Ｔｉを検知して、空気通路に供給する
空気流量Ｇａ中の燃焼用空気流量への分配割合ｎを算出
し、 空気通路に供給する空気流量Ｇａ、空気通路入口の空気
温度Ｔｉ、空気通路の空気流量Ｇａ中の燃焼用空気流量
への分配割合ｎと燃焼室の平均空気過剰率λから燃焼室
の平均的な燃焼温度Ｔを求めることを特徴とする制御方
法。3. The control method according to claim 1 , wherein an average excess air ratio λ of the combustion chamber is detected by detecting a state quantity of combustion flame in the combustion chamber, and an air flow rate Ga supplied to the air passage and an air passage inlet are provided. Of the air pressure Pi, the combustion gas pressure Po at the outlet of the dilution mixing chamber, and the air temperature Ti at the air passage inlet to detect the distribution ratio n of the air flow rate Ga supplied to the air passage to the combustion air flow rate, From the air flow rate Ga supplied to the air passage, the air temperature Ti at the air passage inlet, the distribution ratio n of the air flow rate Ga in the air passage to the combustion air flow rate, and the average excess air ratio λ of the combustion chamber, the average of the combustion chamber is calculated. A control method characterized by obtaining a combustion temperature T. 【請求項４】 請求項１〜３のいずれかに記載の制御方
法において、 予混合室に噴霧する燃料の流量を減少するときには、そ
の減少量分燃焼室に噴霧する燃料の流量を増加すること
を特徴とする制御方法。4. A control method according to any one of claims 1 to 3 when reducing the flow rate of fuel to be sprayed into the premixing chamber, increasing the flow rate of fuel to be sprayed to the decrease amount combustion chamber Control method characterized by. 【請求項５】 請求項１〜４のいずれかに記載の制御方
法において、 予混合室に供給する空気の流量を増加するときには、そ
の空気の旋回流のスワール数を減少し、予混合室に供給
する空気の流量を減少するときには、その空気の旋回流
のスワール数を増加することを特徴とする制御方法。5. A control method according to any one of claims 1-4, when increasing the flow rate of air supplied to the premixing chamber, reduces the swirl number of the swirling flow of the air, in premixing chamber A control method characterized by increasing the swirl number of the swirling flow of the air when decreasing the flow rate of the supplied air.
JP34073495A 1995-12-27 1995-12-27 Control method of premixed combustion device Expired - Fee Related JP3453973B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34073495A JP3453973B2 (en) 1995-12-27 1995-12-27 Control method of premixed combustion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34073495A JP3453973B2 (en) 1995-12-27 1995-12-27 Control method of premixed combustion device

Publications (2)

Publication Number Publication Date
JPH09178186A JPH09178186A (en) 1997-07-11
JP3453973B2 true JP3453973B2 (en) 2003-10-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2508801B1 (en) * 2004-05-07 2017-06-14 Rosemount Aerospace Inc. System for observing combustion conditions in a gas turbine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9911867D0 (en) 1999-05-22 1999-07-21 Rolls Royce Plc A combustion chamber assembly and a method of operating a combustion chamber assembly
JP3772633B2 (en) * 2000-03-17 2006-05-10 株式会社日立製作所 Control method of gas turbine
US7775052B2 (en) * 2004-05-07 2010-08-17 Delavan Inc Active combustion control system for gas turbine engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2508801B1 (en) * 2004-05-07 2017-06-14 Rosemount Aerospace Inc. System for observing combustion conditions in a gas turbine

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