JPS5826486B2 - Radiation tube for industrial furnace - Google Patents
Radiation tube for industrial furnaceInfo
- Publication number
- JPS5826486B2 JPS5826486B2 JP2964379A JP2964379A JPS5826486B2 JP S5826486 B2 JPS5826486 B2 JP S5826486B2 JP 2964379 A JP2964379 A JP 2964379A JP 2964379 A JP2964379 A JP 2964379A JP S5826486 B2 JPS5826486 B2 JP S5826486B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- metal tube
- industrial furnace
- burner
- radiation 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
Links
Landscapes
- Combustion Of Fluid Fuel (AREA)
- Gas Burners (AREA)
Description
【発明の詳細な説明】
本発明は、熱処理炉、加熱炉等の工業炉用放射管に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radiant tube for industrial furnaces such as heat treatment furnaces and heating furnaces.
炉内で燃料を燃焼させることのできない形式の炉、例え
ば雰囲気ガス炉等では、加熱源として耐熱金属管の内側
で燃料を燃焼させ金属管表面からの放射熱で処理物を加
熱する周知の放射管（ラジアントチューブとも称される
。In furnaces that cannot burn fuel inside the furnace, such as atmospheric gas furnaces, the well-known radiation heat source burns fuel inside a heat-resistant metal tube and heats the processed material with radiant heat from the surface of the metal tube. tube (also called radiant tube).
）が使用されている。) is used.
即ち、炉内壁に金属管が直管状又は蛇行管状に配設され
、その一端に設けられたバーナの火炎を該金属管中に通
して処理物を間接的に加熱するものであるが、従来の放
射管はバーナ火炎の近くは熱放射が盛んであってもバー
ナから遠ざかるに従って放射熱が少なくなり炉内温度が
均一に保持できない欠点があった。That is, a metal tube is disposed on the inner wall of the furnace in the form of a straight tube or a meandering tube, and the flame of a burner provided at one end of the tube is passed through the metal tube to indirectly heat the processed material. The radiant tube has the disadvantage that even though heat radiation is active near the burner flame, the radiation heat decreases as the distance from the burner increases, making it impossible to maintain a uniform temperature inside the furnace.
また、例えば連続熱処理炉においては処理物が加熱帯、
第１均熱帯、第１徐冷帯、第２均熱帯、第２徐冷帯・・
・・・・と通過することによって所期の温度に制御され
るが、このような熱処理炉の各帯域に放射管を延長配設
しても、従来の放射管では各帯域を夫々所定温度に調整
することはできなかった。In addition, for example, in a continuous heat treatment furnace, the processed material is in a heating zone,
1st soaking zone, 1st slow cooling zone, 2nd soaking zone, 2nd slow cooling zone...
The temperature is controlled to the desired temperature by passing through the heat treatment furnace, but even if the radiant tube is extended to each zone of such a heat treatment furnace, with the conventional radiant tube, each zone cannot be brought to the specified temperature. It was not possible to adjust.
本発明は上記従来の欠点を解消せんとするものである。The present invention aims to overcome the above-mentioned conventional drawbacks.
図面に従い本発明の一実施例を説明すると、１は耐熱性
の金属管、２は該金属管の基端部に設けられた液体若し
くは気体燃料を燃焼する主バーナ、３は炉壁で、金属管
１の途中に補助バーナ４を設けてなるものである。An embodiment of the present invention will be described with reference to the drawings. 1 is a heat-resistant metal tube, 2 is a main burner provided at the base end of the metal tube and burns liquid or gaseous fuel, 3 is a furnace wall, and 3 is a metal tube. An auxiliary burner 4 is provided in the middle of the pipe 1.
このため補助バーナ４に燃料及び燃焼用空気を送って金
属管１の途中で燃焼させれば、この補助バーナ４以降の
金属管１′は温度上昇し、全体として均一な放射熱が得
られるようになる。Therefore, if fuel and combustion air are sent to the auxiliary burner 4 and burned in the middle of the metal tube 1, the temperature of the metal tube 1' after the auxiliary burner 4 will rise, and uniform radiant heat can be obtained as a whole. become.
また補助バーナ４の燃料の供給を止めて空気だけをこの
補助バーナ４から補給するなどのことによって金属管各
部の温度調整ができるので、連続熱処理炉等における各
帯域の温度制御が容易にできるようになると共に、これ
によって排ガス中の窒素酸化物の濃度を低減する方向に
調整することも可能である。In addition, the temperature of each part of the metal tube can be adjusted by stopping the fuel supply to the auxiliary burner 4 and replenishing only air from the auxiliary burner 4, making it easy to control the temperature of each zone in a continuous heat treatment furnace, etc. In addition to this, it is also possible to adjust the concentration of nitrogen oxides in the exhaust gas to be reduced.
以上実施例について説明したように本発明の放射管は、
金属管基端部の主バーナと、金属管途中の補助バーナに
よって燃焼を理想的に調節し得るので、従来の放射管の
欠点が完全に解消され、産業上極めて有益なものである
。As explained above with respect to the embodiments, the radiation tube of the present invention has the following features:
Since combustion can be ideally controlled by the main burner at the base end of the metal tube and the auxiliary burner in the middle of the metal tube, the drawbacks of conventional radiant tubes are completely eliminated, and this is extremely useful industrially.
図面は本発明に係る工業炉用放射管の一実施例を示した
概略図である。
１・・・・・・金属管、２・・・・・・主バーナ、４・
・・・・・補助バーナ。The drawing is a schematic diagram showing an embodiment of the radiant tube for industrial furnaces according to the present invention. 1...Metal tube, 2...Main burner, 4.
...Auxiliary burner.
Claims (1)
給を止めて空気のみ補給できる補助バーナを設けてなる
ことを特徴とした工業炉用放射管。1. A radiation tube for an industrial furnace, characterized in that a metal tube having a main burner at its base end is provided with an auxiliary burner midway through which the supply of fuel can be stopped and only air can be supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2964379A JPS5826486B2 (en) | 1979-03-13 | 1979-03-13 | Radiation tube for industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2964379A JPS5826486B2 (en) | 1979-03-13 | 1979-03-13 | Radiation tube for industrial furnace |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13218374A Division JPS5728723B2 (en) | 1974-11-15 | 1974-11-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5595005A JPS5595005A (en) | 1980-07-18 |
| JPS5826486B2 true JPS5826486B2 (en) | 1983-06-03 |
Family
ID=12281761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2964379A Expired JPS5826486B2 (en) | 1979-03-13 | 1979-03-13 | Radiation tube for industrial furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826486B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000158A (en) * | 1989-08-14 | 1991-03-19 | North American Manufacturing Company | Staged burning radiant tube |
-
1979
- 1979-03-13 JP JP2964379A patent/JPS5826486B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5595005A (en) | 1980-07-18 |
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