JPS62250115A - Continuous heat treatment furnace - Google Patents
Continuous heat treatment furnaceInfo
- Publication number
- JPS62250115A JPS62250115A JP9384886A JP9384886A JPS62250115A JP S62250115 A JPS62250115 A JP S62250115A JP 9384886 A JP9384886 A JP 9384886A JP 9384886 A JP9384886 A JP 9384886A JP S62250115 A JPS62250115 A JP S62250115A
- Authority
- JP
- Japan
- Prior art keywords
- wall
- furnace
- partition wall
- heat treatment
- charging port
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 238000005192 partition Methods 0.000 claims abstract description 25
- 239000000446 fuel Substances 0.000 abstract description 7
- 239000000567 combustion gas Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000002791 soaking Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
この発明は仕切壁を備えた4続熱処理炉に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a four-sequence heat treatment furnace equipped with partition walls.
[従来の技術]
従来、例えば第7図に示す予熱帯1、加熱帯2及び均熱
帯3からなる3帝式連続加熱炉で、装入側からの煙道4
に、レキュペレータ5及び炉圧制御ダン・4′6を備え
、排ガスを煙突7から排出するものがある。この種加熱
炉で、省エネルギ対策として、例えば予熱帯1と均熱帯
2との間に仕切910’r設けることが行わnている。[Prior Art] Conventionally, for example, in a three-way continuous heating furnace consisting of a pre-heating zone 1, a heating zone 2, and a soaking zone 3 as shown in Fig. 7, a flue 4 from the charging side was used.
Among them, there is one that is equipped with a recuperator 5 and a furnace pressure control chamber 4'6, and discharges the exhaust gas from a chimney 7. In this type of heating furnace, a partition 910'r is provided between the preheating zone 1 and the soaking zone 2, for example, as an energy saving measure.
この場合の炉圧制御は均熱帯3の圧力を検出し、炉圧が
設定値になるよう炉圧調節器8f!!:介してダンパ6
を調節している。In this case, the furnace pressure is controlled by detecting the pressure in the soaking zone 3 and adjusting the furnace pressure to the set value using the furnace pressure regulator 8f! ! : Via damper 6
is being adjusted.
[発明の解決しようとする問題点]
この場合炉内の炉長方向の圧力分布が燃焼ガス流量に応
じて変動し、第8図に示すように加熱帯2、均熱帯3で
は正圧に維持さnるものの、予熱帯1の装入口附近では
燃焼ガス流量が多いときに負圧になる。こnは燃焼ガス
流鎗の増加に伴い仕切壁10による圧力損失賞が増大す
ることによるものである。装入口附近が負圧になること
に工り、装入口からの侵入空気を誘起し、レキュペレタ
5の効率を低下させている。[Problems to be solved by the invention] In this case, the pressure distribution in the furnace length direction changes depending on the combustion gas flow rate, and as shown in FIG. 8, the pressure is maintained at positive pressure in the heating zone 2 and the soaking zone 3. However, when the combustion gas flow rate is large, the pressure becomes negative in the vicinity of the charging inlet of the preheating zone 1. This is because the pressure loss caused by the partition wall 10 increases as the amount of combustion gas flow increases. The negative pressure near the charging port is designed to induce air to enter from the charging port, reducing the efficiency of the recuperator 5.
この発明は、上記のような問題点を解消できるようにし
九連続熱処理炉を提供することを目的とするものである
。The object of the present invention is to provide a nine-continuous heat treatment furnace that can solve the above-mentioned problems.
[問題点を解決するための手段、作用]装入側にレキュ
ペレータを備えると共に、炉内に仕切壁を有する連続熱
処理炉において、仕切壁を固定壁と可動壁とによって構
成する。[Means and operations for solving the problem] In a continuous heat treatment furnace that is equipped with a recuperator on the charging side and has a partition wall inside the furnace, the partition wall is constituted by a fixed wall and a movable wall.
こうして、燃焼ガス流量によって可動壁を回動し、仕切
壁の開口面積を調整することにより、装入口附近の炉圧
が負圧にならないようにする。In this way, by rotating the movable wall depending on the flow rate of the combustion gas and adjusting the opening area of the partition wall, the furnace pressure near the charging port is prevented from becoming negative pressure.
[実施例コ
以下本発明の一実施例を第1図〜第3図により説明する
。なおここで、上記第7図の従来のも・ のと同一構成
の部分は図面の同一個所に同一符号を付してその詳細な
説明を省略する。仕切壁10は、/4スラインを挾んで
設けらnた断面コ状の固定壁11と、この固定壁の凹部
内に回動可能に設けらnた可動壁12とから構成さnて
いる。[Example 1] An example of the present invention will be described below with reference to FIGS. 1 to 3. Here, the same parts in the drawing are denoted by the same reference numerals, and the detailed explanation thereof will be omitted for the same parts as the conventional one shown in FIG. The partition wall 10 is composed of a fixed wall 11 having a U-shaped cross section and provided to sandwich a /4 line, and a movable wall 12 rotatably provided in a recess of the fixed wall.
尚0TJiEl+壁のIki積は、仕切壁の予熱帯側の
炉圧が負圧にならない程度とし、仕切壁のもつ本来の目
的を最小限そこなわない様に配慮さnている。また可動
壁の表面は輻射率の高いものが望ましく、父内部は水冷
さnていても良い。そして可動壁12は、炉外に設は次
アクチーエータ13にょシ歯車列14t−介して、装入
口側に回動さnるようになっている。アクチュエータ1
3は加熱帯の燃料IN、tにより調節計16を介して、
また装入口附近の炉圧により調節計17t−介して駆動
さnるようになっている。Note that the product of 0TJiEl + Iki of the wall is set to such an extent that the furnace pressure on the pre-heating zone side of the partition wall does not become a negative pressure, and care is taken so that the original purpose of the partition wall is not impaired to the minimum. Further, the surface of the movable wall preferably has a high emissivity, and the inside of the wall may be water-cooled. The movable wall 12 is rotated toward the charging port side through an actuator 13 and a gear train 14t, which are installed outside the furnace. Actuator 1
3 is the heating zone fuel IN, t via the controller 16,
It is also driven by the furnace pressure near the charging port via a regulator 17t.
そして、可動壁12t、I@4図に示すフローによって
操作する。加熱帯の燃料流量即ち燃焼ガス量に応じ次仕
切壁による圧力損失を、あらかじめ求めてデータをテー
ブル化しておき、加熱帯の燃料流量から可動壁12の開
度を仮決定して、開閉操作を行う。さらに作動後装入口
附近の炉圧が設定炉圧になるよう可amの開度の微調節
を行う。Then, the movable wall 12t is operated according to the flow shown in Figure I@4. The pressure loss due to the partition wall is calculated in advance according to the fuel flow rate in the heating zone, that is, the amount of combustion gas, and the data is compiled into a table.The opening degree of the movable wall 12 is tentatively determined from the fuel flow rate in the heating zone, and the opening/closing operation is performed. conduct. Furthermore, after operation, the opening degree of the am can be finely adjusted so that the furnace pressure near the charging port becomes the set furnace pressure.
一方従来からの炉圧制御は均熱帯の炉圧に工りダンパ6
の開度t−y4節して行う。On the other hand, conventional furnace pressure control uses a damper 6 to control the furnace pressure in the soaking zone.
This is done with the opening degree of ty4.
かくして、炉長方向の炉圧分布は燃焼ガス流諷が変動し
てもほぼ均一に制御することが可能となる。すなわち均
熱帯の設定圧力を変化させなくとも予熱帯の装入口附近
の圧力はほぼ±011111 H2Oとなり、装入口か
らの侵入空気は歳小限に押えらnる。また燃焼ガスの吹
出しも殆んどない。In this way, the furnace pressure distribution in the furnace length direction can be controlled almost uniformly even if the combustion gas flow fluctuates. That is, even without changing the set pressure of the soaking zone, the pressure near the charging port of the preheating zone is approximately ±011111 H2O, and the air entering from the charging port is suppressed to a minimum. Also, there is almost no combustion gas blowing out.
また、可動壁は予熱帯側へ回動するので、輻射熱を有効
に利用できるので、仕切壁のもつ本来の機能の低下は殆
んどない。そして、上下の可動壁によって燃焼ガスが絞
られるので、ガス流速が上りレキュペレータの効率を上
げることができ、ま友燃焼ガスが予熱帯で天井に向くの
を防止して材料の予熱を効果的に行うことができる。Furthermore, since the movable wall rotates toward the preheating zone, radiant heat can be used effectively, so there is almost no deterioration in the original function of the partition wall. Since the combustion gas is constricted by the upper and lower movable walls, the gas flow rate increases and the efficiency of the recuperator can be increased, preventing the combustion gas from flowing toward the ceiling in the preheating zone and effectively preheating the material. It can be carried out.
こうして、燃料原単位的250 X 10sKca4/
Tの連続加熱炉で原単位を2〜3%低減することができ
友。In this way, the fuel consumption rate is 250 x 10sKca4/
It is possible to reduce the basic unit by 2 to 3% with T's continuous heating furnace.
なお、上記実施例は、予熱帯と加熱帯との間に仕切壁を
設は友ものについて説明し友が、この発明は仕切壁の前
後の圧力損失量を低減するためのものであり、設置位置
は炉長方向の予熱帯に限らnるものではなく、ま友複数
箇所に設けてもよい。Note that the above embodiment describes a case in which a partition wall is installed between the preheating zone and the heating zone, but this invention is for reducing the pressure loss before and after the partition wall, and The location is not limited to the preheating zone in the furnace length direction, and may be provided at multiple locations.
また、上記実施例では可動壁の開度を加熱帯の燃料流量
によりプリセットし、その後装入口附近の炉圧により開
度の微1i1i整を行っているが、プリセットすること
なく装入口附近の炉圧によって可動壁の開度を制御して
もよい。In addition, in the above embodiment, the opening degree of the movable wall is preset by the fuel flow rate in the heating zone, and then the opening degree is finely adjusted by the furnace pressure near the charging port. The opening degree of the movable wall may be controlled by pressure.
また、実施例に示す鋼片の連続加熱炉に限らず、各徨熱
処理炉にも適用できる。Further, the present invention is not limited to the continuous heating furnace for steel billets shown in the examples, but can also be applied to various continuous heat treatment furnaces.
次に、仕切壁10の第2の実施例t−第5図にょシ説明
する。こnは、断面コ状の固定壁21の装入口側に、凹
部21ht@う大きさの可動壁22を回動可能に設は友
ものである。この可動壁22も、第3図の可動壁12と
同様にして、装入口側に回動さnるようになっている。Next, a second embodiment of the partition wall 10 will be described with reference to FIG. In this case, a movable wall 22 having a size similar to the recess 21ht is rotatably provided on the charging port side of the fixed wall 21 having a U-shaped cross section. This movable wall 22 is also adapted to be rotated toward the loading port side in the same manner as the movable wall 12 in FIG. 3.
こうして上記第1の実施例の場合と同様の効果を得るこ
とができる。In this way, the same effects as in the first embodiment described above can be obtained.
更に仕切壁10の第3の実施例t−第6図により説明す
る。こnは、断面矩形状の固定壁31に、矩形状の窓3
1&を複数個あけ、この窓内に可動kJl!32t−回
動可能に設けて構成さnている。この場合も燃料流量に
応じて可動壁を回動させることにより装入口附近の炉圧
が負圧にならないようにすることができる。Further, a third embodiment of the partition wall 10 will be explained with reference to FIG. This is a fixed wall 31 with a rectangular cross section and a rectangular window 3.
Open multiple 1& and move kJl in this window! 32t - is rotatably arranged and configured. In this case as well, by rotating the movable wall according to the fuel flow rate, it is possible to prevent the furnace pressure near the charging port from becoming negative pressure.
[発明の効果]
この発明の連続熱処理炉は、上記のようなもので仕切壁
の本来の機能を杏することなく、装入口附近の炉圧が負
圧になることを防止することができる。[Effects of the Invention] The continuous heat treatment furnace of the present invention as described above can prevent the furnace pressure near the charging port from becoming negative pressure without impairing the original function of the partition wall.
第1図〜第4図は本発明の一失施例を示すもので第1図
は全体説明図、第2図は仕切壁の説明図、第3図は可動
壁の駆動機構の説明図、第4図は可動壁の操作フローの
説明図、第5図及び第6図はそnぞn仕切壁の第2、第
3芙施例の説明図、第7図は従来の連続加熱炉の概略図
、第8図は炉艮万同の炉圧分布説明図である。
5・・・レキュペレータ、10・・・仕切11、i 1
.21 。
3ノ・・・固定壁、12,22.32・・・可動壁。
出願人代理人 弁理士 鈴 江 武 2第1図
第2図
第3図
第4図
第5図
第6図Figures 1 to 4 show a failed embodiment of the present invention, with Figure 1 being an overall explanatory diagram, Figure 2 being an explanatory diagram of a partition wall, and Figure 3 being an explanatory diagram of a drive mechanism for a movable wall. Fig. 4 is an explanatory diagram of the operation flow of the movable wall, Figs. 5 and 6 are explanatory diagrams of the second and third embodiments of the partition wall, respectively, and Fig. 7 is an explanatory diagram of the conventional continuous heating furnace. The schematic diagram, FIG. 8, is an explanatory diagram of the furnace pressure distribution in all furnace configurations. 5... Recuperator, 10... Partition 11, i 1
.. 21. 3. Fixed wall, 12,22.32... Movable wall. Applicant's agent Patent attorney Takeshi Suzue 2 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (1)
を有する連続熱処理炉において、仕切壁を固定壁と可動
壁とによって構成したことを特徴とする連続熱処理炉。1. A continuous heat treatment furnace equipped with a recuperator on the charging side and having a partition wall inside the furnace, characterized in that the partition wall is constituted by a fixed wall and a movable wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9384886A JPS62250115A (en) | 1986-04-23 | 1986-04-23 | Continuous heat treatment furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9384886A JPS62250115A (en) | 1986-04-23 | 1986-04-23 | Continuous heat treatment furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62250115A true JPS62250115A (en) | 1987-10-31 |
Family
ID=14093824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9384886A Pending JPS62250115A (en) | 1986-04-23 | 1986-04-23 | Continuous heat treatment furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62250115A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6314812A (en) * | 1986-07-07 | 1988-01-22 | Nippon Steel Corp | Method and apparatus for controlling furnace pressure of continuous heating furnace |
-
1986
- 1986-04-23 JP JP9384886A patent/JPS62250115A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6314812A (en) * | 1986-07-07 | 1988-01-22 | Nippon Steel Corp | Method and apparatus for controlling furnace pressure of continuous heating furnace |
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