JPS6126735Y2 - - Google Patents

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Publication number
JPS6126735Y2
JPS6126735Y2 JP1982046693U JP4669382U JPS6126735Y2 JP S6126735 Y2 JPS6126735 Y2 JP S6126735Y2 JP 1982046693 U JP1982046693 U JP 1982046693U JP 4669382 U JP4669382 U JP 4669382U JP S6126735 Y2 JPS6126735 Y2 JP S6126735Y2
Authority
JP
Japan
Prior art keywords
tube
burner
radiant
double
radiant tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1982046693U
Other languages
Japanese (ja)
Other versions
JPS58148440U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4669382U priority Critical patent/JPS58148440U/en
Publication of JPS58148440U publication Critical patent/JPS58148440U/en
Application granted granted Critical
Publication of JPS6126735Y2 publication Critical patent/JPS6126735Y2/ja
Granted legal-status Critical Current

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  • Gas Burners (AREA)

Description

【考案の詳細な説明】[Detailed explanation of the idea]

本考案は高温加熱炉、熱処理炉等高温炉用ラジ
アントチユーブ(熱交換器付を含む)バーナに関
するものである。 高温炉内にて使用されるラジアントチユーブの
パイロツトバーナ、メインバーナは高温の輻射熱
を受ける。メインバーナは、熱焼制御のための燃
料の流通停止時、非常遮断時および作業停止時に
おいては燃料通過による冷却効果が無いため高温
に上昇する。この高温時の対策として、耐熱、耐
酸化、体熱変形等を考慮してノズル、バーナチユ
ーブの材質、形状が選定され、決定される。特に
バーナチユーブは細長い形状であり、且つ先端の
バーナノズルの重量を支えるため、バーナノズル
の重量をも考慮した熱間時の強度が必要である。
従来、バーナチユーブの温度が高い程、材質は耐
熱性の高いもの、即ち、高温クリープ強度F
(Kg/cm2)の良いものを使用し、又、バーナチユ
ーブ径を大きくして断面係数Z(cm3)を増加し
て、熱間時の強度を確保している。 第1図は熱交換器付ラジアントチユーブバーナ
の組立図を示し、燃焼用空気13は熱交換器6に
より予熱されて接続空気管を通りバーナ側に入
る。パイロツトバーナ5は燃焼用空気13が通風
されてから点火される。メインバーナ用燃料ガス
12はメインバーナチユーブ1を通りバーナノズ
ル2から噴出され、パイロツトバーナ5の火炎に
より着火されラジアントチユーブ8内を通る燃焼
用空気13と混合してラジアントチユーブ8内で
燃焼してラジアントチユーブ8を加熱する。 尚第1図中、7はバーナ本体、9はエンドプレ
ート、10は炉壁、11はパイロツトバーナ用ミ
ツクスガス、14は予熱空気、15は燃焼排ガス
を示す。 第2図に示すのは従来のラジアントチユーブバ
ーナにおけるメインバーナで、バーナチユーブの
The present invention relates to a radiant tube burner (including one with a heat exchanger) for high-temperature furnaces such as high-temperature heating furnaces and heat treatment furnaces. The pilot burner and main burner of the radiant tube used in the high-temperature furnace receive high-temperature radiant heat. The main burner rises to a high temperature because there is no cooling effect due to the passage of fuel when the flow of fuel is stopped for thermal combustion control, when there is an emergency shutdown, and when the work is stopped. As a countermeasure against this high temperature, the materials and shapes of the nozzle and burner tube are selected and determined in consideration of heat resistance, oxidation resistance, body heat deformation, etc. In particular, the burner tube has an elongated shape and supports the weight of the burner nozzle at the tip, so it needs to have strength during hot operation that also takes into consideration the weight of the burner nozzle.
Conventionally, the higher the temperature of the burner tube, the higher the heat resistance of the material, that is, the higher the high temperature creep strength F.
(Kg/cm 2 ) is used, and the burner tube diameter is increased to increase the section modulus Z (cm 3 ) to ensure strength when hot. FIG. 1 shows an assembly diagram of a radiant tube burner with a heat exchanger, in which combustion air 13 is preheated by a heat exchanger 6 and enters the burner side through a connecting air pipe. The pilot burner 5 is ignited after combustion air 13 is passed through it. Main burner fuel gas 12 passes through main burner tube 1 and is ejected from burner nozzle 2, is ignited by the flame of pilot burner 5, mixes with combustion air 13 passing through radiant tube 8, and burns in radiant tube 8 to generate radiant gas. Heat tube 8. In FIG. 1, 7 is a burner body, 9 is an end plate, 10 is a furnace wall, 11 is a pilot burner mix gas, 14 is preheated air, and 15 is a combustion exhaust gas. Figure 2 shows the main burner in a conventional radiant tube burner.

【表】 本考案は、上記問題点を排除し、点火、燃焼等
の作業に何等の不安もないラジアントチユーブバ
ーナを提供するものであり、その特徴とするとこ
ろは、高温炉用ラジアントチユーブバーナにおい
て、メインバーナチユーブ内に内筒を挿設して二
重管構造となし、該二重管の配設間隙にセラミツ
クフアイバを充填した二重管式ラジアントチユー
ブバーナである。 以下本考案の実施例を図面に基づき説明する。 第3図は本考案のラジアントチユーブバーナに
おけるメインバーナの一実施例を示し、バーナチ
ユーブ外管1内にバーナチユーブ内管3を挿設し
た2重管に構成され、さらに外管と内管の配設間
隙に高温用セラミツクフアイバ4が充填されてい
る。内管3はバーナノズル2に熔接接続され、管
長は200〜400mmでメインバーナ高温部に設置され
る。 バーナチユーブ外管1内を通つた燃料ガス12
は内管3内にて適性流速となりバーナノズル2か
ら噴出する。従つて、本考案によれば、 (1) 内管内の燃料ガス速度U≒15〜25Nm/sec
でバーナノズル2よりの噴出速度よりは速いが
ノズルと内管の孔径には大差はなく、50%の燃
料の流量でも内管3内の金属微粉等は排出可能
である。 (2) 外管と内管の配設間隙の断熱材により、浄却
効果も良く内管内面の焼付現象も殆んどない。 (3) 内管はメインバーナ高温部にのみ設置してい
るので内管の管長は短かく、流速Uも高速でな
いため通常のラジアントチユーブバーナと比較
して圧抵抗の差も小さく操作上の差異はない。 (4) 高温バーナ用として通常容易に入手可能な耐
熱鋼管をバーナサポートとして使用し製作も簡
単である。 即ち、本考案二重管式ラジアントチユーブバ
ーナはラジアントチユーブ使用可能の最高炉温
においても従来のバーナと同様に使用でき特別
に高級な材質を必要としない。
[Table] The present invention eliminates the above-mentioned problems and provides a radiant tube burner that does not require any anxiety during ignition, combustion, etc. The feature is that the radiant tube burner for high-temperature furnaces is This is a double-tube type radiant tube burner in which an inner tube is inserted into the main burner tube to form a double-tube structure, and the gap between the double tubes is filled with ceramic fiber. Embodiments of the present invention will be described below based on the drawings. Fig. 3 shows an embodiment of the main burner in the radiant tube burner of the present invention, which is constructed as a double tube in which an inner burner tube 3 is inserted into an outer burner tube 1, and an outer tube and an inner tube. A high temperature ceramic fiber 4 is filled in the arrangement gap. The inner tube 3 is welded to the burner nozzle 2, has a length of 200 to 400 mm, and is installed in the high temperature section of the main burner. Fuel gas 12 passing through the burner tube outer tube 1
reaches an appropriate flow velocity in the inner tube 3 and is ejected from the burner nozzle 2. Therefore, according to the present invention, (1) Fuel gas velocity U≒15 to 25 Nm/sec in the inner pipe
This is faster than the ejection speed from the burner nozzle 2, but there is not much difference in the hole diameter between the nozzle and the inner tube, and fine metal powder etc. in the inner tube 3 can be discharged even at a fuel flow rate of 50%. (2) The insulation material in the gap between the outer tube and the inner tube provides good cleaning effects and almost no seizure phenomenon on the inner surface of the inner tube. (3) Since the inner tube is installed only in the high temperature section of the main burner, the length of the inner tube is short, and the flow velocity U is not high, so the difference in pressure resistance is small compared to a normal radiant tube burner, resulting in operational differences. There isn't. (4) Heat-resistant steel pipes, which are usually easily available for high-temperature burners, are used as burner supports, and manufacturing is simple. That is, the double-tube type radiant tube burner of the present invention can be used in the same manner as conventional burners even at the maximum furnace temperature at which the radiant tube can be used, and does not require particularly high-grade materials.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は熱交換器付ラジアントチユーブバーナ
の組立図で、アは側面断面図、イはアのa−a線
矢視図である。第2図は従来形式のメインバーナ
の説明図、第3図は本考案の二重管式メインバー
ナの説明図である。 1……メインバーナチユーブ、2……バーナノ
ズル、3……内管、4……高温セラミツクフアイ
バ、5……パイロツトバーナ、6……熱交換器、
7……バーナ本体、8……ラジアントチユーブ、
9……エンドプレート、10……炉壁、11……
パイロツトバーナ用ミツクスガス、12……燃料
ガス、13……燃焼用空気、14……予熱空気、
15……燃焼排ガス。
FIG. 1 is an assembled view of a radiant tube burner with a heat exchanger, in which A is a side sectional view and A is a view taken along the line a-a of A. FIG. 2 is an explanatory diagram of a conventional type main burner, and FIG. 3 is an explanatory diagram of a double pipe type main burner of the present invention. 1... Main burner tube, 2... Burner nozzle, 3... Inner tube, 4... High temperature ceramic fiber, 5... Pilot burner, 6... Heat exchanger,
7... Burner body, 8... Radiant tube,
9... End plate, 10... Furnace wall, 11...
Mixture gas for pilot burner, 12...fuel gas, 13...combustion air, 14...preheating air,
15... Combustion exhaust gas.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 高温炉用ラジアントチユーブバーナにおいて、
メインバーナチユーブ内に内管を挿設して二重管
構造となし、該二重管の配設間隙にセラミツクフ
アイバを充填したことを特徴とする二重管式ラジ
アントチユーブバーナ。
In radiant tube burners for high temperature furnaces,
A double tube type radiant tube burner characterized in that an inner tube is inserted into a main burner tube to form a double tube structure, and a gap between the double tubes is filled with ceramic fiber.
JP4669382U 1982-03-31 1982-03-31 Double tube type radiant tube burner Granted JPS58148440U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4669382U JPS58148440U (en) 1982-03-31 1982-03-31 Double tube type radiant tube burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4669382U JPS58148440U (en) 1982-03-31 1982-03-31 Double tube type radiant tube burner

Publications (2)

Publication Number Publication Date
JPS58148440U JPS58148440U (en) 1983-10-05
JPS6126735Y2 true JPS6126735Y2 (en) 1986-08-11

Family

ID=30057681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4669382U Granted JPS58148440U (en) 1982-03-31 1982-03-31 Double tube type radiant tube burner

Country Status (1)

Country Link
JP (1) JPS58148440U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556679B2 (en) * 1972-07-12 1980-02-19
JPS5685618A (en) * 1979-12-14 1981-07-11 Kawasaki Steel Corp Radiant tube burner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5838278Y2 (en) * 1978-06-29 1983-08-30 石川島播磨重工業株式会社 radiation tube

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556679B2 (en) * 1972-07-12 1980-02-19
JPS5685618A (en) * 1979-12-14 1981-07-11 Kawasaki Steel Corp Radiant tube burner

Also Published As

Publication number Publication date
JPS58148440U (en) 1983-10-05

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