JPH0517282B2 - - Google Patents
Info
- Publication number
- JPH0517282B2 JPH0517282B2 JP17583384A JP17583384A JPH0517282B2 JP H0517282 B2 JPH0517282 B2 JP H0517282B2 JP 17583384 A JP17583384 A JP 17583384A JP 17583384 A JP17583384 A JP 17583384A JP H0517282 B2 JPH0517282 B2 JP H0517282B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- tube body
- cooling
- tube
- radiant
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 34
- 239000000498 cooling water Substances 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000567 combustion gas Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 description 6
- 238000000137 annealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Gas Burners (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ヒートパターンが設定された雰囲気
炉、光輝焼鈍炉等において、その炉内雰囲気ガス
を間接加熱するラジアントチユーブに関し、特に
そのラジアントチユーブで炉内を加熱すると共に
冷却できる加熱・冷却用ラジアントチユーブに関
するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a radiant tube that indirectly heats the atmosphere gas in the furnace in an atmosphere furnace, bright annealing furnace, etc. in which a heat pattern is set, and in particular, the present invention relates to a radiant tube that indirectly heats the atmosphere gas in the furnace. This relates to a heating/cooling radiant tube that can heat and cool the inside of a furnace.
従来、雰囲気炉、光輝焼鈍炉等の炉内を間接加
熱するにはラジアントチユーブが使用されてい
る。このラジアントチユーブは炉内を挿通すべく
複数本設けられ、そのラジアントチユーブ内に燃
焼ガスを流すことにより、炉内で循環フアンによ
り循環される雰囲気ガスと間接熱交換して熱処理
すべき鋼材等を加熱するようになつている。
Conventionally, radiant tubes have been used to indirectly heat the inside of furnaces such as atmospheric furnaces and bright annealing furnaces. A plurality of these radiant tubes are installed to pass through the furnace, and by flowing combustion gas through the radiant tubes, steel materials to be heat-treated are heated through indirect heat exchange with the atmospheric gas circulated by the circulation fan inside the furnace. It's starting to heat up.
また冷却時には冷却装置を移動して炉内に臨ま
せ、その冷却装置内を流れる冷却水と雰囲気ガス
とを間接熱交換して冷却するようにしている。 During cooling, the cooling device is moved to face the inside of the furnace, and the cooling water flowing inside the cooling device and the atmospheric gas exchange indirect heat for cooling.
しかしながら、炉内には加熱用のラジアントチ
ユーブの他に炉内に冷却装置を出入れさせるスペ
ースが必要となり、その分炉内容積が大きくなり
熱効率が悪くなると共に炉高が高くなる分の設備
費が高くなる問題がある。また、冷却装置及びそ
の冷却装置を出入れする駆動装置が必要であるた
めコストが高くなる問題がある。
However, in addition to the radiant tube for heating, space is required inside the furnace to take the cooling device in and out, which increases the internal volume of the furnace, reduces thermal efficiency, and increases the height of the furnace, which increases equipment costs. There is a problem with the increase in Furthermore, since a cooling device and a drive device for moving the cooling device in and out are required, there is a problem in that the cost increases.
本発明は上記事情を考慮してなされたもので、
雰囲気炉などに使用されるラジアントチユーブで
加熱と冷却が行える加熱・冷却用ラジアントチユ
ーブを提供することを目的とする。
The present invention was made in consideration of the above circumstances, and
The purpose of the present invention is to provide a radiant tube for heating and cooling that can perform heating and cooling using a radiant tube used in an atmospheric furnace or the like.
本発明は上記の目的を達成するために、炉の側
壁下部から炉内に臨んで炉の上壁を挿通するよう
略Ｌ字状のチユーブ本体を設け、そのチユーブ本
体の下部から燃焼ガスを供給して炉内雰囲気ガス
を間接加熱するラジアントチユーブにおいて、上
記チユーブ本体の下部にドレン水を排出し、かつ
冷却空気を供給する補助管を接続し、上記チユー
ブ本体の上部に冷却水を供給する冷却水供給手段
を設けたことを特徴とするもので、加熱時にはチ
ユーブ本体の下部から燃焼ガスを流して炉内雰囲
気ガスを間接加熱し、冷却時には、先ず補助管か
らチユーブ本体内に冷却空気を流して雰囲気ガス
を空冷したのち、冷却水供給手段からチユーブ本
体内に冷却水を流すと共にそのドレン水を補助管
から排出することにより、一つのラジアントチユ
ーブで加熱と冷却の双方を行えるようにしたもの
である。これにより炉内の内容積を減少させるこ
とができると共に熱効率を向上させ、しかも設備
費の低減ができるようにしたものである。
In order to achieve the above object, the present invention provides a substantially L-shaped tube body that faces into the furnace from the lower side wall of the furnace and passes through the upper wall of the furnace, and supplies combustion gas from the lower part of the tube body. In a radiant tube that indirectly heats the atmosphere gas in the furnace, an auxiliary pipe is connected to the lower part of the tube body to discharge drain water and supply cooling air, and the cooling water is supplied to the upper part of the tube body. It is characterized by being equipped with a water supply means. During heating, combustion gas is flowed from the bottom of the tube body to indirectly heat the atmosphere gas in the furnace, and during cooling, cooling air is first flowed into the tube body from the auxiliary pipe. After the atmospheric gas is air-cooled, cooling water is allowed to flow into the tube body from the cooling water supply means, and the drain water is discharged from the auxiliary pipe, making it possible to perform both heating and cooling with one radiant tube. It is. This makes it possible to reduce the internal volume of the furnace, improve thermal efficiency, and reduce equipment costs.
以下本発明に係る加熱・冷却用ラジアントチユ
ーブの好適一実施例を添付図面に基づいて説明す
る。
A preferred embodiment of the heating/cooling radiant tube according to the present invention will be described below with reference to the accompanying drawings.
図において、１は雰囲気炉、光輝焼鈍炉などの
炉で、図には示していないが、熱処理すべき鋼材
などの被処理材を搬出入する開閉扉及び不活性ガ
スなどの雰囲気ガスの供給装置及びその雰囲気ガ
スを炉１内で対流循環させる循環フアンが設けら
れている。この炉１の側壁１ａの下部から炉１内
に臨み略Ｌ字状に屈曲して上部が炉１の上壁１ｂ
を挿通するチユーブ本体２が設けられる。チユー
ブ本体２の内面にはセラミツクの短管及びベンド
管からなる耐火物のライナー３が内張りされる。
チユーブ本体２の屈曲部４には補助管５が接続さ
れ、その端部５ａはチユーブ本体２の下部２ａの
下方で側壁１ａを挿通して炉１外に延出される。 In the figure, 1 is a furnace such as an atmosphere furnace or a bright annealing furnace, and although not shown in the figure, there is an opening/closing door for carrying in and out materials to be heat treated such as steel materials, and a supply device for atmospheric gas such as inert gas. A circulation fan for convectionally circulating the atmospheric gas within the furnace 1 is also provided. The side wall 1a of the furnace 1 faces into the furnace 1 from the lower part and is bent in a substantially L shape, and the upper part is the upper wall 1b of the furnace 1.
A tube body 2 is provided which is inserted through the tube body 2. The inner surface of the tube body 2 is lined with a refractory liner 3 consisting of a short ceramic tube and a bent tube.
An auxiliary tube 5 is connected to the bent portion 4 of the tube body 2, and its end portion 5a extends out of the furnace 1 by passing through the side wall 1a below the lower portion 2a of the tube body 2.
チユーブ本体２の下部２ａ及び上部２ｂは炉１
の側壁１ａ及び上壁１ｂに対して移動可能に支持
される。この支持装置６は、壁１ａ，１ｂに固定
され、チユーブ本体２の下部２ａ及び上部２ｂを
挿通する固定フランジ部７と、チユーブ本体２の
下部２ａ及び上部２ｂに固定される移動フランジ
部８と、そのフランジ部７，８間のチユーブ本体
２を包囲し、固定フランジ部７と移動フランジ部
８とを接続するエキスパンシヨン管９と、フラン
ジ部７，８間に設けられたスプリング１０とから
構成され、スプリング１０の押圧力によりそのチ
ユーブ本体２の上下部２ｂ，２ａを移動フランジ
部８を介して支持する。エキスパンシヨン管９は
チユーブ本体２の上下部２ｂ，２ａと壁穴１ｃ間
からリークする雰囲気ガスをシールする。 The lower part 2a and upper part 2b of the tube body 2 are connected to the furnace 1.
It is movably supported with respect to the side wall 1a and the upper wall 1b. This support device 6 includes a fixed flange part 7 fixed to the walls 1a and 1b and inserted through the lower part 2a and upper part 2b of the tube body 2, and a movable flange part 8 fixed to the lower part 2a and the upper part 2b of the tube body 2. , an expansion tube 9 that surrounds the tube body 2 between the flange parts 7 and 8 and connects the fixed flange part 7 and the movable flange part 8, and a spring 10 provided between the flange parts 7 and 8. The upper and lower portions 2b and 2a of the tube body 2 are supported via the movable flange portion 8 by the pressing force of the spring 10. The expansion tube 9 seals atmospheric gas leaking from between the upper and lower portions 2b, 2a of the tube body 2 and the wall hole 1c.
補助管５の端部５ａも同様に固定フランジ部１
１、移動フランジ部１２、エキスパンシヨン管１
３及びスプリング１４からなる支持装置１５で側
壁１ａに対して移動可能に支持される。 Similarly, the end portion 5a of the auxiliary pipe 5 is attached to the fixed flange portion 1.
1, moving flange part 12, expansion tube 1
3 and a spring 14, it is movably supported with respect to the side wall 1a.
チユーブ本体２の下部２ａにはそのチユーブ本
体２内に燃焼ガスを供給するバーナ装置１６が接
続され、上部２ｂには、そのチユーブ本体２を通
つた燃焼ガスを排気すると共に排熱と熱交換する
熱交換器１７が接続される。 A burner device 16 for supplying combustion gas into the tube body 2 is connected to the lower part 2a of the tube body 2, and a burner device 16 for supplying combustion gas into the tube body 2 is connected to the upper part 2b, while exhausting the combustion gas that has passed through the tube body 2 and exchanging heat with exhaust heat. A heat exchanger 17 is connected.
チユーブ本体２の上部２ｂにはそのチユーブ本
体２内に冷却水を供給する冷却水供給手段１８が
設けられる。この冷却水供給手段１８はチユーブ
本体２の上部２ｂ内に設けられた案内筒１９と、
その案内筒１９に接続した給水管２０と、その給
水管２０に接続したバルブ２１と、冷却水を供給
するポンプ２２とから構成される。 A cooling water supply means 18 for supplying cooling water into the tube body 2 is provided in the upper part 2b of the tube body 2. This cooling water supply means 18 includes a guide tube 19 provided in the upper part 2b of the tube body 2,
It is composed of a water supply pipe 20 connected to the guide tube 19, a valve 21 connected to the water supply pipe 20, and a pump 22 that supplies cooling water.
補助管５の端部５ａにはバルブ２３が接続さ
れ、そのバルブ２３を通してチユーブ本体２内に
冷却用空気を供給する冷却空気供給装置２４が接
続され、またそのバルブ２３からドレン水を排水
するドレン管２５が接続される。 A valve 23 is connected to the end 5a of the auxiliary pipe 5, and a cooling air supply device 24 that supplies cooling air into the tube body 2 through the valve 23 is connected, and a drain that drains drain water is connected from the valve 23. Pipe 25 is connected.
チユーブ本体２は炉１に対して複数本、例えば
炉１内の被処理材を包囲するように配置され、ま
たその各チユーブ本体２に供給する燃焼ガスはバ
ーナ装置１６から分岐させて供給し、また同様に
冷却水及び冷却用空気も分岐して供給する。 A plurality of tube bodies 2 are arranged in the furnace 1, for example, so as to surround the material to be treated in the furnace 1, and the combustion gas to be supplied to each tube body 2 is branched from the burner device 16 and supplied, Similarly, cooling water and cooling air are also branched and supplied.
次に本発明の作用を説明する。 Next, the operation of the present invention will be explained.
バーナ装置１６からの高温の燃焼ガスはチユー
ブ本体２の下部２ａからチユーブ本体２内に導入
され、上部２ｂから排気される。この際チユーブ
本体２の外周面で、炉１内を対流循環する雰囲気
ガスが接触し、その燃焼ガスと雰囲気ガスとが間
接熱交換して雰囲気ガスが加熱され、その雰囲気
ガスにより被処理材を加熱する。被処理材が所定
温度に達した場合にはバーナ装置１６での燃焼を
停止し、補助管５のバルブ２３を開とし冷却空気
供給装置２４から補助管５を通じてチユーブ本体
２内に冷却空気を供給し、炉１内の冷却を行う。
この冷却により炉１内の温度が500℃に達した時
にその冷却空気供給装置２４を停止し、冷却水供
給手段１８から冷却水を供給する。この場合冷却
水はチユーブ本体２内の熱により蒸気となり、そ
の蒸気がチユーブ本体２の上部２ｂから排出さ
れ、またドレン水は補助管５からドレン管２５を
通して排水される。この冷却において炉１内が
200℃以下となつた場合には冷却水はドレン管２
５から略総て排水されることとなる。 High-temperature combustion gas from the burner device 16 is introduced into the tube body 2 from the lower part 2a of the tube body 2, and is exhausted from the upper part 2b. At this time, the outer peripheral surface of the tube body 2 comes into contact with the atmospheric gas circulating in the furnace 1 through indirect heat exchange, and the atmospheric gas is heated through indirect heat exchange, and the material to be treated is heated by the atmospheric gas. Heat. When the material to be treated reaches a predetermined temperature, combustion in the burner device 16 is stopped, the valve 23 of the auxiliary pipe 5 is opened, and cooling air is supplied from the cooling air supply device 24 into the tube body 2 through the auxiliary pipe 5. Then, the inside of the furnace 1 is cooled.
When the temperature inside the furnace 1 reaches 500° C. due to this cooling, the cooling air supply device 24 is stopped and cooling water is supplied from the cooling water supply means 18. In this case, the cooling water turns into steam due to the heat inside the tube body 2, and the steam is discharged from the upper part 2b of the tube body 2, and the drain water is discharged from the auxiliary pipe 5 through the drain pipe 25. During this cooling, the inside of the furnace 1
If the temperature is below 200℃, the cooling water is drained from drain pipe 2.
Almost all of the water will be drained from 5 onwards.
この加熱・冷却処理は、例えばチユーブ本体２
の温度をセンサにより測定し、温度指示調節計に
より自動的に燃焼ガスの供給量、冷却空気供給量
及び冷却水供給量が制御される。 This heating/cooling process is performed, for example, on the tube body 2.
The temperature of the engine is measured by a sensor, and a temperature indicating controller automatically controls the amount of combustion gas supplied, the amount of cooling air supplied, and the amount of cooling water supplied.
また加熱・冷却の温度によりチユーブ本体２及
び補助管５は伸縮するが、その端部は炉１に支持
装置６，１５により移動自在に支持されるためチ
ユーブ本体２に過大な熱応力が発生しない。 In addition, although the tube body 2 and the auxiliary tube 5 expand and contract depending on the temperature of heating and cooling, excessive thermal stress is not generated in the tube body 2 because the ends thereof are movably supported by the support devices 6 and 15 in the furnace 1. .
以上詳述してきたことから明らかなように本発
明によれば次のごとき優れた効果を発揮する。
As is clear from what has been described in detail above, the present invention exhibits the following excellent effects.
(1) チユーブ本体に空気を供給し、かつドレン水
を排水する補助管を設け、上部に冷却水供給手
段を設けたので加熱・冷却を同一のラジアント
チユーブで行え、かつその炉の設備費が減少す
る。(1) An auxiliary pipe is provided to supply air to the tube body and drain water, and a cooling water supply means is provided at the top, so heating and cooling can be performed in the same radiant tube, and the equipment cost for the furnace is reduced. Decrease.
(2) ラジアントチユーブを側壁下部から炉内に臨
んで上壁を挿通するようにしたので炉高を低く
するとができると共に炉内有効面積を広くで
き、そのラジアントチユーブの取付けが簡単と
なり、メンテナンスが容易にできる。(2) Since the radiant tube faces into the furnace from the bottom of the side wall and is inserted through the top wall, the height of the furnace can be lowered and the effective area inside the furnace can be increased.The radiant tube can be easily installed and maintenance is reduced. It's easy to do.
(3) 炉型が小形化できるので燃料原単位を少なく
できると共に製作据付費を節約できる。(3) Since the furnace type can be made smaller, fuel consumption can be reduced and manufacturing and installation costs can be saved.
(4) 冷却水で冷却する場合、水の蒸発冷却を利用
でき冷却時間を減少できる。(4) When cooling with cooling water, evaporative cooling of water can be used to reduce cooling time.
添付図面は本発明に係る加熱・冷却用ラジアン
トチユーブの一実施例を示す部分断面図である。
図中、１は炉、２はチユーブ本体、５は補助
管、１８は冷却水供給手段、２４は冷却空気供給
装置である。
The accompanying drawing is a partial sectional view showing an embodiment of a heating/cooling radiant tube according to the present invention. In the figure, 1 is a furnace, 2 is a tube body, 5 is an auxiliary pipe, 18 is a cooling water supply means, and 24 is a cooling air supply device.
Claims (1)
通するよう略Ｌ字状のチユーブ本体を設け、その
チユーブ本体の下部から燃焼ガスを供給して炉内
雰囲気ガスを間接加熱するラジアントチユーブに
おいて、上記チユーブ本体の下部にドレン水を排
出し、かつ冷却空気を供給する補助管を接続し、
上記チユーブ本体の上部に冷却水を供給する冷却
水供給手段を設けたことを特徴とする加熱・冷却
用ラジアントチユーブ。1. A radiant that has a roughly L-shaped tube body that faces into the furnace from the bottom of the side wall of the furnace and passes through the top wall of the furnace, and supplies combustion gas from the bottom of the tube body to indirectly heat the atmospheric gas in the furnace. In the tube, an auxiliary pipe is connected to the lower part of the tube body to discharge drain water and supply cooling air,
A radiant tube for heating and cooling, characterized in that a cooling water supply means for supplying cooling water is provided at the upper part of the tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17583384A JPS6156230A (en) | 1984-08-25 | 1984-08-25 | Radiant tube for heating and cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17583384A JPS6156230A (en) | 1984-08-25 | 1984-08-25 | Radiant tube for heating and cooling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6156230A JPS6156230A (en) | 1986-03-20 |
| JPH0517282B2 true JPH0517282B2 (en) | 1993-03-08 |
Family
ID=16003011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17583384A Granted JPS6156230A (en) | 1984-08-25 | 1984-08-25 | Radiant tube for heating and cooling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6156230A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100944427B1 (en) | 2002-12-23 | 2010-02-25 | 재단법인 포항산업과학연구원 | Radiant tube unit |
| US7326706B2 (en) * | 2003-08-15 | 2008-02-05 | Bristol-Myers Squibb Company | Pyrazine modulators of cannabinoid receptors |
| JP4877896B2 (en) * | 2004-03-17 | 2012-02-15 | 坂本工業株式会社 | Plastic fuel container |
-
1984
- 1984-08-25 JP JP17583384A patent/JPS6156230A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6156230A (en) | 1986-03-20 |
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