JPS6243089B2 - - Google Patents
Info
- Publication number
- JPS6243089B2 JPS6243089B2 JP57024967A JP2496782A JPS6243089B2 JP S6243089 B2 JPS6243089 B2 JP S6243089B2 JP 57024967 A JP57024967 A JP 57024967A JP 2496782 A JP2496782 A JP 2496782A JP S6243089 B2 JPS6243089 B2 JP S6243089B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- combustion
- gas nozzle
- furnace
- opening
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
Description
【発明の詳細な説明】
本発明は、炉軸心上で炉前壁の一部に開口する
開口部に、先端がこの開口部に臨むガスノズルを
配設すると共に、その外周に焚口形成筒体を外嵌
配設してなるガスバーナに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a gas nozzle whose tip faces the opening in an opening that opens in a part of the front wall of the furnace on the furnace axis, and a gas nozzle with a gas nozzle on its outer periphery. This relates to a gas burner which is fitted externally.
拡散燃焼の炉内燃焼下限界値（自燃限界値）は
燃焼器と構造によつて大きく影響される。第１図
に示すパラレル型ガスバーナは代表的なガスバー
ナである。すなわち１は炉で、外壁体２と、その
内側に二重に積層した耐火断熱材３，４とからな
る。前記炉１の最奥部には排ガスダクト５が連通
し、この排ガスダクト５には冷却水ダクト６が外
嵌されている。前記炉１の前端には、炉軸心７上
で炉前壁１２の開口部に、先端部が臨むように位
置するガスノズル８が配設され、このガスノズル
８には燃料供給管９が連通する。前記ガスノズル
８の外周には焚口形成筒体１０を外嵌配設し、こ
の焚口形成筒体１０の後端には燃焼用空気供給ダ
クト１１が連通している。１２は炉前壁で、外壁
体１３と耐火断熱材１４とからなる。１５は内
筒、１６はのぞき窓を示す。この従来例による
と、焚口先端を円筒状とし、ガス、空気の混合流
を炉軸心７に平行に噴出させる構造であり、第２
図に示すように保炎をガスノズル８の後流にでき
る循環領域イで行なわせようとしたものである。
したがつて混合ガス（C3H8−N2）の自然限界値は
例えば900Kcal／Ｎm3の高いものになる。 The lower in-furnace combustion limit (self-combustion limit) of diffusion combustion is greatly influenced by the combustor and its structure. The parallel type gas burner shown in FIG. 1 is a typical gas burner. That is, 1 is a furnace, which consists of an outer wall body 2 and refractory heat insulating materials 3 and 4 laminated in double layers inside the outer wall body 2. An exhaust gas duct 5 communicates with the innermost part of the furnace 1, and a cooling water duct 6 is fitted around the exhaust gas duct 5. A gas nozzle 8 is disposed at the front end of the furnace 1 so that its tip faces the opening of the front wall 12 on the furnace axis 7, and a fuel supply pipe 9 communicates with the gas nozzle 8. . A combustion opening forming cylinder 10 is fitted around the outer periphery of the gas nozzle 8, and a combustion air supply duct 11 is connected to the rear end of the combustion opening forming cylinder 10. Reference numeral 12 denotes a furnace front wall, which is composed of an outer wall body 13 and a refractory heat insulating material 14. 15 is an inner cylinder, and 16 is a viewing window. According to this conventional example, the tip of the combustion port is cylindrical, and the structure is such that a mixed flow of gas and air is ejected parallel to the furnace axis 7.
As shown in the figure, flame stabilization is attempted to be carried out in a circulation region A formed downstream of the gas nozzle 8.
Therefore, the natural limit value of the mixed gas (C 3 H 8 -N 2 ) is as high as, for example, 900 Kcal/Nm 3 .
本発明はガスノズルの先端部のガス噴出口に対
向する焚口形成筒体の前端内周部を、炉軸心に対
して30〜70度の拡がり角となる傾斜面に形成し、
そしてガス噴出部外径（d2）とガスノズル外径
（d1）との比（d2／d1）を0.4〜1.0にすると共に、ガ
スノズル外径（d1）と焚口形成筒体内径(d)との比
（d1／ｄ）を0.75〜0.98にしたガスバーナを提供
するものであり、かかる構成によると、ガスノズ
ル後流にできる循環領域をより大きくすると同時
に、噴流を炉側壁に衝突させ、噴流衝突位置上流
側の噴流外周にできる外部循環領域においても保
炎させることができ、自燃限界値を低下させるこ
とができる。 In the present invention, the inner peripheral part of the front end of the combustion port forming cylinder facing the gas ejection port at the tip of the gas nozzle is formed into an inclined surface having a divergence angle of 30 to 70 degrees with respect to the furnace axis,
Then, the ratio (d 2 /d 1 ) of the gas ejection part outer diameter (d 2 ) and the gas nozzle outer diameter (d 1 ) is set to 0.4 to 1.0, and the gas nozzle outer diameter (d 1 ) and the combustion opening forming cylinder inner diameter ( The present invention provides a gas burner with a ratio (d 1 /d) of 0.75 to 0.98. According to this configuration, the circulation area formed in the wake of the gas nozzle is made larger, and at the same time, the jet stream is made to collide with the furnace side wall. Flame stabilization can also be achieved in the external circulation region formed on the outer periphery of the jet on the upstream side of the jet collision position, and the self-combustion limit value can be lowered.
以下に本発明の一実施例を第３図〜第７図に基
づいて説明する。本発明では、ガスノズル８の先
端部のガス噴出口に対向する焚口形成筒体１０前
端内周部を、炉軸心７に対して30〜70度の拡がり
角（θ）となる傾斜面１７に形成している。そし
て、ガス噴出部外径（d2）とガスノズル外径
（d1）との比（d2／d1）を0.4〜1.0にすると共に、ガ
スノズル外径（d1）と焚口形成筒体内径（ｄ）と
の比（d1／ｄ）を0.75〜0.98にしている。これに
よると第４図に示すように、ガス、空気混合流を
広角度に拡げて噴出させる構造であることから、
ガスノズル８の後流にできる循環領域イをより大
きくすると同時に、噴流ロを炉側壁に衝突させ、
噴流ロの衝突位置上流側の噴流外周にできる外部
循環領域ハにおいても保炎させ得る。 An embodiment of the present invention will be described below based on FIGS. 3 to 7. In the present invention, the front end inner circumferential portion of the combustion port forming cylinder 10 facing the gas ejection port at the tip of the gas nozzle 8 is formed into an inclined surface 17 having a divergence angle (θ) of 30 to 70 degrees with respect to the furnace axis 7. is forming. Then, the ratio (d 2 /d 1 ) of the gas ejection part outer diameter (d 2 ) and the gas nozzle outer diameter (d 1 ) is set to 0.4 to 1.0, and the gas nozzle outer diameter (d 1 ) and the combustion port forming cylinder inner diameter are adjusted. The ratio (d 1 /d) to (d) is set to 0.75 to 0.98. According to this, as shown in Figure 4, the structure is such that the mixed flow of gas and air is ejected at a wide angle.
The circulation area A created in the wake of the gas nozzle 8 is made larger, and at the same time, the jet stream B is made to collide with the furnace side wall,
Flame stabilization can also be achieved in the external circulation area C formed on the outer periphery of the jet on the upstream side of the collision position of the jet B.
第６図にはノズル径比（d2／d1）と限界ガス発
熱量の関係が示されている。ここで燃焼条件とし
ては、ガス組成（Vol％）がC3H8→3.1〜4.9，N2
→96.9〜95.1であり、燃焼量5.7〜6.7Nm3／ｈ、空
気比1.3〜1.5である。これによると、C3H8−N2の
混合ガスの自燃限界値を690Kcal／Ｎm3まで低下
させ得る。また第７図にはノズル径比（d1／ｄ）
と限界ガス発熱量の関係が示されている。ここで
燃焼条件としては、ガス組成（Vol％）がC3H8→
3.1〜4.9，N2→96.9〜95.1であり、燃焼量5.7〜
6.7Nm3／ｈ、空気比1.3〜1.5，d2／d1→0.83であ
る。これによると、C3H8−N2の混合ガスの自燃
限界値を690Kcal／Ｎm3まで低下させ得る。 FIG. 6 shows the relationship between the nozzle diameter ratio (d 2 /d 1 ) and the critical gas calorific value. Here, the combustion conditions are that the gas composition (Vol%) is C 3 H 8 → 3.1 to 4.9, N 2
→96.9 to 95.1, combustion amount 5.7 to 6.7 Nm 3 /h, and air ratio 1.3 to 1.5. According to this, the self-combustion limit value of the C 3 H 8 -N 2 mixed gas can be lowered to 690 Kcal/Nm 3 . Also, Fig. 7 shows the nozzle diameter ratio (d 1 /d)
The relationship between and the limit gas calorific value is shown. Here, the combustion conditions are that the gas composition (Vol%) is C 3 H 8 →
3.1~4.9, N 2 →96.9~95.1, combustion amount 5.7~
6.7Nm 3 /h, air ratio 1.3 to 1.5, d 2 /d 1 →0.83. According to this, the self-combustion limit value of the C 3 H 8 -N 2 mixed gas can be lowered to 690 Kcal/Nm 3 .
以上に述べたごとく本発明によれば、ガスノズ
ル後流にできる循環領域をより大きくすると同時
に、噴流を炉側壁に衝突させ、噴流の周囲で、噴
流衝突位置上流の炉側壁とガスノズル周囲の前壁
との間の空間内に形成される外部循環領域におい
ても保災させることができ、自燃限界値を低下さ
せることができる。 As described above, according to the present invention, the circulation area created after the gas nozzle is made larger, and at the same time, the jet is made to collide with the furnace side wall, and around the jet, the furnace side wall upstream of the jet collision position and the front wall around the gas nozzle are Disaster protection can also be provided in the external circulation area formed in the space between the two and the self-combustion limit value can be lowered.
第１図、第２図は従来例を示し、第１図は縦断
面図、第２図は燃焼説明図、第３図〜第７図は本
発明の一実施例を示し、第３図は縦断面図、第４
図は燃焼説明図、第５図は寸法説明図、第６図は
ノズル径比（d2／d1）と限界ガス発熱量の関係を
示すグラフ図、第７図はノズル径比（d1／ｄ）と
限界ガス発熱量の関係を示すグラフ図である。
１……炉、７……炉軸心、８……ガスノズル、
１０……焚口形成筒体、１７……傾斜面。
Fig. 1 and Fig. 2 show a conventional example, Fig. 1 is a longitudinal sectional view, Fig. 2 is an explanatory diagram of combustion, Figs. 3 to 7 show an embodiment of the present invention, and Fig. 3 is a longitudinal sectional view. Longitudinal sectional view, 4th
Figure 5 is a diagram explaining combustion, Figure 5 is a diagram explaining dimensions, Figure 6 is a graph showing the relationship between nozzle diameter ratio (d 2 /d 1 ) and limit gas calorific value, and Figure 7 is a diagram showing nozzle diameter ratio (d 1 ) . It is a graph figure which shows the relationship between /d) and the limit gas calorific value. 1...Furnace, 7...Furnace axis, 8...Gas nozzle,
10... Fire opening forming cylindrical body, 17... Inclined surface.
Claims (1)
に、先端がこの開口部に臨むガスノズルを配設
し、該ガスノズルの外周を囲む焚口形成筒体を前
記開口部に配設し、前記ガスノズルの先端部のガ
ス噴出口に対向する前記焚口形成筒体の前端内周
部を、炉軸心に対して30〜70度の拡がり角となる
傾斜面に形成し、そしてガス噴出部外径（d2）と
ガスノズル外径（d1）との比（d2／d1）を0.4〜1.0
にすると共に、ガスノズル外径（d1）と焚口形成
筒体内径(d)との比（d1／ｄ）を0.75〜0.98にした
ことを特徴とするガスバーナ。1. A gas nozzle with its tip facing the opening is disposed in an opening that opens in a part of the front wall of the furnace on the furnace axis, and a combustion port-forming cylinder that surrounds the outer periphery of the gas nozzle is disposed in the opening. , an inner peripheral portion of the front end of the combustion port forming cylinder facing the gas ejection port at the tip of the gas nozzle is formed into an inclined surface having a divergence angle of 30 to 70 degrees with respect to the furnace axis, and a gas ejection portion The ratio (d 2 /d 1 ) of the outer diameter ( d 2 ) and the gas nozzle outer diameter (d 1 ) is 0.4 to 1.0.
A gas burner characterized in that the ratio (d 1 /d) of the gas nozzle outer diameter (d 1 ) to the combustion opening forming cylinder inner diameter (d) is 0.75 to 0.98.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2496782A JPS58142112A (en) | 1982-02-17 | 1982-02-17 | Gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2496782A JPS58142112A (en) | 1982-02-17 | 1982-02-17 | Gas burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58142112A JPS58142112A (en) | 1983-08-23 |
| JPS6243089B2 true JPS6243089B2 (en) | 1987-09-11 |
Family
ID=12152736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2496782A Granted JPS58142112A (en) | 1982-02-17 | 1982-02-17 | Gas burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58142112A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101878491B1 (en) * | 2017-11-27 | 2018-07-13 | 애경산업(주) | Novel Pseudoceramide Compound with improved stability and composition comprising it |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60132528U (en) * | 1984-02-14 | 1985-09-04 | 日立造船株式会社 | Low calorie gas burner |
| JP5299948B2 (en) * | 2008-03-04 | 2013-09-25 | リンナイ株式会社 | Combustion device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5433633U (en) * | 1977-08-10 | 1979-03-05 | ||
| EP0031206A1 (en) * | 1979-12-05 | 1981-07-01 | Nu-Way Energy Limited | An air-heating gas burner |
-
1982
- 1982-02-17 JP JP2496782A patent/JPS58142112A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5433633U (en) * | 1977-08-10 | 1979-03-05 | ||
| EP0031206A1 (en) * | 1979-12-05 | 1981-07-01 | Nu-Way Energy Limited | An air-heating gas burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101878491B1 (en) * | 2017-11-27 | 2018-07-13 | 애경산업(주) | Novel Pseudoceramide Compound with improved stability and composition comprising it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58142112A (en) | 1983-08-23 |
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