JPH0798106A - Combustion equipment - Google Patents
Combustion equipmentInfo
- Publication number
- JPH0798106A JPH0798106A JP5244726A JP24472693A JPH0798106A JP H0798106 A JPH0798106 A JP H0798106A JP 5244726 A JP5244726 A JP 5244726A JP 24472693 A JP24472693 A JP 24472693A JP H0798106 A JPH0798106 A JP H0798106A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- venturi body
- venturi
- liquid fuel
- combustor
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Spray-Type Burners (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、高温の燃焼ガスを得る
ための燃焼器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustor for obtaining high temperature combustion gas.
【0002】[0002]
【従来の技術】燃焼器で得られる燃焼ガスは、公害物
質、すなわちNox及び未燃物がなく、さらに完全燃焼
して残留O2 が低いことが望ましい。ところで、従来の
この種の燃焼器は、空気と燃料を爆発限界範囲内の濃度
で混合し、これを空気スパーク等の手段にて着火させて
火炎を形成し、その後は上記空気と燃料の混合気を継続
して燃焼させるようにしている。2. Description of the Related Art It is desirable that the combustion gas obtained in a combustor is free of pollutants, that is, Nox and unburned substances, and is completely burned to have low residual O 2 . By the way, a conventional combustor of this type mixes air and fuel at a concentration within an explosion limit range, ignites this by means such as air sparks to form a flame, and then mixes the air and fuel. I try to burn the air continuously.
【0003】[0003]
【発明が解決しようとする課題】しかしながら液体燃料
の場合には、液滴状で分散されているので、燃焼時に部
分的な高温部が発生してしまい、Noxがかなりの量で
発生していた。このNoxの発生を押えるためには予熱
された空気中に液体燃料を混合して予蒸発・予混合状態
の混合気として燃焼させる必要があった。However, in the case of liquid fuel, since it is dispersed in the form of droplets, a high temperature part is partially generated during combustion, and a considerable amount of Nox is generated. . In order to suppress the generation of Nox, it was necessary to mix liquid fuel into preheated air and burn it as a pre-evaporated / pre-mixed air-fuel mixture.
【0004】本発明は、上記のことに鑑みなされたもの
で、液体燃料用の燃焼器の場合でも、空気を予熱するこ
となく、Noxの発生を押え、未燃物がない高温の燃焼
ガスを得ることができるようにした燃焼器を提供するこ
とを目的とするものである。The present invention has been made in view of the above, and even in the case of a combustor for liquid fuel, the generation of Nox is suppressed without preheating the air, and a high-temperature combustion gas containing no unburned matter is generated. It is an object of the present invention to provide a combustor that can be obtained.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る燃焼器は、空気の流路管の内部に、ベ
ンチュリーを形成するベンチュリー体7を内装すると共
に、このベンチュリー体7にて構成される流路管のスロ
ート部8に液体燃料出口孔6aを設け、上記ベンチュリ
ー体7の下流側先端部に、先端が燃焼室2に開口する孔
を軸方向に設けると共に、この孔に連通する連通孔12
をベンチュリー体7のスロート部8より下流側部に開口
した構成となっている。また、上記空気の流通路に、液
体燃料出口孔6aに隣接してに気体燃料出口孔6bを設
ける。また、上記ベンチュリー体7を金属よりなる基端
側部材7aとセラミックスよりなる先端側部材7bにて
構成し、両部材の接合部に断熱材9を介装する。さらに
上記ベンチュリー体7の軸心に設ける孔をこれの全長に
わたって設けると共に、ベンチュリー体7の基端側にフ
レームアイ11等の観察部材を設ける。In order to achieve the above object, the combustor according to the present invention has a venturi body 7 forming a venturi inside the air passage pipe and the venturi body 7 The liquid fuel outlet hole 6a is provided in the throat portion 8 of the flow path pipe configured as described above, and a hole having a tip opening to the combustion chamber 2 is provided in the axial direction at the downstream end of the venturi body 7, Communication hole 12 communicating with
Is opened on the downstream side of the throat portion 8 of the venturi body 7. Further, a gas fuel outlet hole 6b is provided adjacent to the liquid fuel outlet hole 6a in the air passage. Further, the venturi body 7 is composed of a base end side member 7a made of metal and a tip end side member 7b made of ceramics, and a heat insulating material 9 is interposed at a joint portion of both members. Further, a hole provided at the axial center of the venturi body 7 is provided over the entire length thereof, and an observation member such as a frame eye 11 is provided on the base end side of the venturi body 7.
【0006】[0006]
【作 用】液体燃料が液体燃料出口孔6aより流路管
のスロート部8に供給され、この部分で増速された空気
中に液滴状になって分散されて燃焼室2内で燃焼され
る。このときスロート部8の下流側は燃焼室2より圧力
が低くなり、燃焼室2の燃焼ガスがベンチュリー体7の
孔を通って連通孔12よりスロート部の下流側へ還流さ
れる。この還流された高温の燃焼ガスによりスロート部
8へ供給された液滴状の液体燃料が加熱されて予蒸発・
予混合状態にされる。[Operation] Liquid fuel is supplied from the liquid fuel outlet hole 6a to the throat portion 8 of the flow path pipe, and is dispersed in the air accelerated in this portion in the form of droplets and burned in the combustion chamber 2. It At this time, the pressure on the downstream side of the throat portion 8 becomes lower than that on the combustion chamber 2, and the combustion gas in the combustion chamber 2 is returned to the downstream side of the throat portion from the communication hole 12 through the hole of the venturi body 7. The high-temperature recirculated combustion gas heats the liquid fuel droplets supplied to the throat portion 8 to pre-evaporate the liquid fuel.
Premixed.
【0007】[0007]
【実 施 例】本発明の実施例を図1に基づいて説明す
る。図中1は燃焼器、2はこの燃焼器1の先端側に接続
された燃焼室である。そして3は燃焼器1の外筒であ
り、この外筒3は基端を蓋板4で閉じた筒状になってい
て、これの先端部は拡開状に形成されている。この外筒
3の基端側に空気入口管5が開されており、この空気入
口管5より先端側に液体燃料出口孔6aと気体燃料出口
孔6bとが軸方向に位置をずらせて、かつそれぞれ円周
方向に複数個設けられている。この各燃料出口孔6a,
6bは外筒3の外側に設けた環状の燃料溜めを経て円周
方向から均一に流入するようになっている。EXAMPLE An example of the present invention will be described with reference to FIG. In the figure, 1 is a combustor, and 2 is a combustion chamber connected to the tip side of the combustor 1. Reference numeral 3 denotes an outer cylinder of the combustor 1, and the outer cylinder 3 has a cylindrical shape with a base end closed by a cover plate 4, and a tip end portion of the outer cylinder 3 is formed in an expanded shape. An air inlet pipe 5 is opened at the base end side of the outer cylinder 3, and a liquid fuel outlet hole 6a and a gas fuel outlet hole 6b are axially displaced from the air inlet pipe 5 toward the tip side, and A plurality of them are provided in the circumferential direction. Each fuel outlet hole 6a,
6b is designed to uniformly flow in from the circumferential direction through an annular fuel reservoir provided outside the outer cylinder 3.
【0008】上記外筒3内には、液体及び気体の各燃料
出口孔6a,6bに対向する位置に軸方向両側部をテー
パ状にしたベンチュリー体7が同心状に配置してあり、
このベンチュリー体7にて両燃料出口孔5,6の開口部
に環状のスロート部8が構成されている。このベンチュ
リー体7は一端部を蓋板4側に固着する基端側部材7a
と、この基端側部材7aにねじ結合される先端側部材7
bとからなっている。この端側部材7a,7bのねじ結
合部にはセラミックス繊維等の断熱材9が介在されてあ
る。Inside the outer cylinder 3, there are concentrically arranged venturi bodies 7 whose both axial sides are tapered at positions facing the liquid and gas fuel outlet holes 6a and 6b, respectively.
The venturi body 7 forms an annular throat portion 8 at the openings of both fuel outlet holes 5 and 6. The venturi body 7 has a base end member 7a whose one end is fixed to the cover plate 4 side.
And the tip side member 7 screwed to the base side member 7a.
It consists of b and. A heat insulating material 9 such as ceramics fiber is interposed in the screw connection portion of the end members 7a and 7b.
【0009】このベンチュリー体7の軸心部には軸方向
に貫通孔10が設けてあり、これの基端側に蓋板4の外
側に固着したフレームアイ11が接続してあり、このフ
レームアイ11にて燃焼室2内を貫通孔10を通しての
ぞけるようになっている。ベンチュリー体7の先端側部
材7bのテーパ部には上記貫通孔9に連通する連通孔1
2が放射状に設けてある。またこのベンチュリー体7の
先端側部材7bの端部は燃焼室2内で開口されている。
上記燃焼室2の内側には断熱材13が固着してあり、ま
たこの燃焼室2の基端部に初期点火棒14が設けてあ
る。A through hole 10 is provided in the axial center of the venturi body 7 in the axial direction, and a frame eye 11 fixed to the outside of the cover plate 4 is connected to the base end side of the through hole 10. At 11, the interior of the combustion chamber 2 can be seen through the through hole 10. A communicating hole 1 communicating with the through hole 9 is formed in the tapered portion of the tip side member 7b of the venturi body 7.
2 are provided radially. Further, the end of the tip side member 7b of the venturi body 7 is opened in the combustion chamber 2.
A heat insulating material 13 is fixed inside the combustion chamber 2, and an initial ignition rod 14 is provided at the base end of the combustion chamber 2.
【0010】上記構成における作用を説明する。空気入
口管5より空気を供給しながら液体燃料出口孔5より液
体燃料を供給する。燃焼器1内での空気はベンチュリー
体7で構成されるスロート部8で流速が速められてお
り、このスロート部8へ上記流体燃料が供給されるの
で、液体燃料はこの高速空気中に液滴となって分散され
て燃焼室2側へ流れ、初期点火棒14にて点火されて燃
焼される。The operation of the above configuration will be described. While supplying air from the air inlet pipe 5, liquid fuel is supplied from the liquid fuel outlet hole 5. The flow velocity of the air in the combustor 1 is increased in the throat portion 8 composed of the Venturi body 7, and since the fluid fuel is supplied to the throat portion 8, the liquid fuel drops into the high speed air. Are dispersed and flow to the combustion chamber 2 side, and are ignited by the initial ignition rod 14 and burned.
【0011】このとき、スロート部8の下流側はベンチ
ュリー効果により燃焼室2より圧力が低くなっているか
ら、燃焼室2内の高温の燃焼ガスがベンチュリー体7の
軸心に設けられた貫通孔10、連通孔12を通ってスロ
ート部8の下流側に還流され、ここを通る燃料が液滴状
に分散されている混合気中に混合される。At this time, since the pressure on the downstream side of the throat portion 8 is lower than that of the combustion chamber 2 due to the Venturi effect, the hot combustion gas in the combustion chamber 2 has a through hole provided in the axial center of the venturi body 7. 10, the fuel is returned to the downstream side of the throat portion 8 through the communication hole 12, and the fuel passing therethrough is mixed with the air-fuel mixture dispersed in the form of droplets.
【0012】これにより、スロート部8を通過した液滴
状に分散された燃料は蒸発して予蒸発・予混合状態とな
り、燃焼室2においてスムーズな燃焼が継続される。As a result, the fuel dispersed in the form of liquid droplets that has passed through the throat portion 8 is vaporized into a pre-evaporated / pre-mixed state, and smooth combustion is continued in the combustion chamber 2.
【0013】上記液体燃料が重油のように蒸発温度が高
く最初に点火するのが困難な場合には、スタート時のみ
に気体燃料を使用する。この場合、スタート時には気体
燃料出口孔6bより気体燃料を供給して空気と混合し、
初期点火棒14にて点火する。燃焼室2内での燃焼が継
続して、この燃焼室2の燃焼ガスがスロート部8の下流
側に還流が生じた時点で液体燃料に切換える。When the liquid fuel has a high evaporation temperature like heavy oil and it is difficult to ignite first, the gaseous fuel is used only at the start. In this case, at the time of start, the gaseous fuel is supplied from the gaseous fuel outlet hole 6b and mixed with the air,
The initial ignition rod 14 ignites. The combustion is continued in the combustion chamber 2, and when the combustion gas in the combustion chamber 2 recirculates to the downstream side of the throat portion 8, the fuel gas is switched to the liquid fuel.
【0014】この燃焼器1を使用する場合、1500℃
の燃焼ガスの場合でNoxの発生量は酸素0%換算で2
0ppmくらいとなった。上記ベンチュリー体7の先端
部7bは高温にさらされるため通常は耐熱性を有する炭
化硅素で作られるが、高温と熱衝撃に耐えられるセラミ
ックスであればよい。ベンチュリー体7の基端側部材は
金属にて構成する。またこの両部材7a,7bの間に介
装する断熱材9は先端側部材7bからの熱を遮断し、か
つ膨脹率の違いによる歪みを緩衝するものであればどん
な材料でもよいが、通常断熱性よいセラミックス繊維を
圧縮結合したものを用いる。When using this combustor 1, 1500 ° C.
In the case of the combustion gas of Nox, the generation amount of Nox is 2 in terms of 0% oxygen.
It became about 0 ppm. Since the tip portion 7b of the venturi body 7 is exposed to high temperature, it is usually made of heat-resistant silicon carbide, but any ceramic capable of withstanding high temperature and thermal shock may be used. The base end member of the Venturi body 7 is made of metal. The heat insulating material 9 interposed between the two members 7a and 7b may be any material as long as it shields heat from the tip side member 7b and buffers the strain due to the difference in expansion coefficient. A ceramic fiber that is compression bonded is used.
【0015】上記ベンチュリー体7の軸心に設けた貫通
孔10は必ずしもこれの全長に設ける必要はなく、先端
側部材7b側だけ設けて、燃焼室2側の燃焼ガスが連通
孔12より還流するようにしてもよい。この場合燃焼室
2内を観察するためのフレームアイ11は別のところに
設ける。The through hole 10 provided at the axial center of the venturi body 7 does not necessarily have to be provided over the entire length thereof, but only the tip side member 7b side is provided so that the combustion gas on the combustion chamber 2 side recirculates from the communication hole 12. You may do it. In this case, the flame eye 11 for observing the inside of the combustion chamber 2 is provided at another place.
【0016】[0016]
【発明の効果】本発明によれば、液体燃料用の燃焼器の
場合でも、空気を予熱することなく、Noxの発生が押
えられ、また未燃焼物がない高温の燃焼ガスを得ること
ができる。According to the present invention, even in the case of a combustor for liquid fuel, the generation of Nox can be suppressed and high-temperature combustion gas free of unburned matter can be obtained without preheating the air. .
【図1】本発明の実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
1…燃焼器、2…燃焼室、3…外筒、4…蓋体、5…空
気入口管、6a…液体燃料出口孔、6b…気体燃料出口
孔、7…ベンチュリー体、7a…基端側部材、7b…先
端側部材、8…スロート部、9,13…断熱材、10…
貫通孔、11…フレームアイ、12…連通孔、14…初
期点火棒。DESCRIPTION OF SYMBOLS 1 ... Combustor, 2 ... Combustion chamber, 3 ... Outer cylinder, 4 ... Lid body, 5 ... Air inlet pipe, 6a ... Liquid fuel outlet hole, 6b ... Gas fuel outlet hole, 7 ... Venturi body, 7a ... Base end side Member, 7b ... Tip member, 8 ... Throat portion, 9, 13 ... Insulation material, 10 ...
Through hole, 11 ... Flame eye, 12 ... Communication hole, 14 ... Initial ignition rod.
Claims (4)
形成するベンチュリー体7を内装すると共に、このベン
チュリー体7にて構成される流路管のスロート部8に液
体燃料出口孔6aを設け、上記ベンチュリー体7の下流
側先端部に、先端が燃焼室2に開口する孔を軸方向に設
けると共に、この孔に連通する連通孔12をベンチュリ
ー体7のスロート部8より下流側部に開口したことを特
徴とする燃焼器。1. A venturi body 7 forming a venturi is internally provided in an air flow pipe, and a liquid fuel outlet hole 6a is provided in a throat portion 8 of the flow pipe constituted by the venturi body 7. A hole having a tip opening to the combustion chamber 2 is provided in the downstream end of the venturi body 7 in the axial direction, and a communication hole 12 communicating with this hole is opened downstream of the throat portion 8 of the venturi body 7. Combustor characterized by having done.
隣接して気体燃料出口孔6bを設けたことを特徴とする
請求項1記載の燃料器。2. The fuel device according to claim 1, wherein a gas fuel outlet hole 6b is provided adjacent to the liquid fuel outlet hole 6a in the air flow passage.
部材7aとセラミックスよりなる先端側部材7bにて構
成し、両部材の接合部に断熱材9を介装したことを特徴
とする請求項1または2記載の燃焼器。3. The venturi body 7 is composed of a base end side member 7a made of metal and a tip end side member 7b made of ceramics, and a heat insulating material 9 is interposed at a joint portion of both members. The combustor according to 1 or 2.
れの全長にわたって設けると共に、ベンチュリー体7の
基端側にフレームアイ11等の観察部材を設けたこと特
徴とする請求項1,2または3記載の燃焼器。4. The hole provided in the axial center of the venturi body 7 is provided over the entire length thereof, and an observation member such as a frame eye 11 is provided on the base end side of the venturi body 7. The combustor according to 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24472693A JP3215994B2 (en) | 1993-09-30 | 1993-09-30 | Combustor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24472693A JP3215994B2 (en) | 1993-09-30 | 1993-09-30 | Combustor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0798106A true JPH0798106A (en) | 1995-04-11 |
JP3215994B2 JP3215994B2 (en) | 2001-10-09 |
Family
ID=17122992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24472693A Expired - Fee Related JP3215994B2 (en) | 1993-09-30 | 1993-09-30 | Combustor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3215994B2 (en) |
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US6227966B1 (en) | 1997-02-19 | 2001-05-08 | Kabushiki Kaisha Bandai | Simulation device for fostering a virtual creature |
JP2003528282A (en) * | 2000-03-24 | 2003-09-24 | ベバスト テルモジスティーム インターナツィオナール ゲゼルシャフト ミット ベシュレンクテル ハフツング | Venturi pipe fuel spray type two-component burner and Venturi nozzle for spraying liquid fuel |
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-
1993
- 1993-09-30 JP JP24472693A patent/JP3215994B2/en not_active Expired - Fee Related
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US6118458A (en) * | 1993-08-25 | 2000-09-12 | Casio Computer Co., Ltd. | Image displaying apparatus |
US5720663A (en) * | 1994-12-02 | 1998-02-24 | Namco Ltd. | Game apparatus, image synthesizing method, and data storage medium |
US6227966B1 (en) | 1997-02-19 | 2001-05-08 | Kabushiki Kaisha Bandai | Simulation device for fostering a virtual creature |
US6213871B1 (en) | 1997-02-19 | 2001-04-10 | Kabushiki Kaisha Bandai | Nurturing simulation apparatus for virtual creatures |
US6832955B2 (en) | 1997-02-19 | 2004-12-21 | Kabushiki Kaisha Bandai | Breeding simulation apparatus for virtual creatures |
US7104884B2 (en) | 1997-02-19 | 2006-09-12 | Kabushiki Kaisha Bandai | Breeding simulation apparatus for virtual creatures |
US5966526A (en) * | 1997-03-18 | 1999-10-12 | Kabushiki Kaisha Bandai | Simulation device for fostering a virtual creature |
EP1078664A2 (en) | 1999-08-26 | 2001-02-28 | Nintendo Co., Ltd. | Game machine and storage medium therefor |
EP1078666A2 (en) | 1999-08-26 | 2001-02-28 | Nintendo Co., Ltd. | Image-display game system and information storage medium used therefor |
JP2003528282A (en) * | 2000-03-24 | 2003-09-24 | ベバスト テルモジスティーム インターナツィオナール ゲゼルシャフト ミット ベシュレンクテル ハフツング | Venturi pipe fuel spray type two-component burner and Venturi nozzle for spraying liquid fuel |
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