JPS6314048B2 - - Google Patents
Info
- Publication number
- JPS6314048B2 JPS6314048B2 JP1435584A JP1435584A JPS6314048B2 JP S6314048 B2 JPS6314048 B2 JP S6314048B2 JP 1435584 A JP1435584 A JP 1435584A JP 1435584 A JP1435584 A JP 1435584A JP S6314048 B2 JPS6314048 B2 JP S6314048B2
- Authority
- JP
- Japan
- Prior art keywords
- solid
- breathable
- furnace
- breathable solid
- strip
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/3005—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/02—Crowns; Roofs
- F27D1/021—Suspended roofs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、直火無酸化加熱タイプの横型連続熱
処理炉（以後NOFと呼び、予熱炉を含む）ある
いは、スラブ等の加熱炉における通気性固体壁の
構造に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to a horizontal continuous heat treatment furnace of direct fire non-oxidation heating type (hereinafter referred to as NOF, including a preheating furnace) or a heating furnace for heating slabs etc. It concerns the construction of solid walls.
（従来技術）
例えば、ストリツプ材の連続熱処理炉におい
て、ストリツプ材は500〜700℃迄は、弱酸化性雰
囲気のNOFにより加熱される。その炉温は、
1200〜1300℃とされているが、従来のNOFでは
炉壁面の温度は、炉温よりも100〜150℃低いと考
えられ、そのために伝熱効率には改善する余地が
残されている。(Prior Art) For example, in a continuous heat treatment furnace for strip material, the strip material is heated to 500 to 700°C using NOF in a weakly oxidizing atmosphere. The furnace temperature is
However, in conventional NOF, the temperature of the furnace wall surface is thought to be 100 to 150 degrees Celsius lower than the furnace temperature, so there is still room for improvement in heat transfer efficiency.
第１図は、従来のNOFのレイアウトを示し、
ストリツプ材１は一方の炉装入口から炉内に導入
され、ハースロール３によつて支持搬送されなが
ら、加熱装置４により加熱される。かかる装置
は、特開昭50−147414号公報で開示されている。 Figure 1 shows the layout of a conventional NOF,
The strip material 1 is introduced into the furnace from one of the furnace charging ports, and is heated by the heating device 4 while being supported and conveyed by the hearth rolls 3. Such a device is disclosed in Japanese Patent Application Laid-Open No. 147414/1983.
このような従来のNOFでは、伝熱効率が悪い
ことから、特願昭57−156810号で出願しているよ
うに、第２図で示す通気性固体５，６を、ストリ
ツプ材１に対面して設置することを提案した。こ
れによればその通気性固体５，６を通して燃焼ガ
スを流すことにより、通気性固体壁面と燃焼ガス
の温度がほぼ等しくなり、そのためふく射能の大
きな通気性固体面からの固体ふく射が大きくな
り、従来のNOFよりも伝熱効率を上昇させるこ
とができる。 Since such a conventional NOF has poor heat transfer efficiency, as filed in Japanese Patent Application No. 156810/1980, the air-permeable solids 5 and 6 shown in FIG. 2 are placed facing the strip material 1. I suggested that it be installed. According to this, by flowing the combustion gas through the air permeable solids 5 and 6, the temperature of the air permeable solid wall surface and the combustion gas become almost equal, so that the solid radiation from the air permeable solid surface with high radiation activity becomes large. Heat transfer efficiency can be increased compared to conventional NOF.
一方、ストリツプ材の連続熱処理炉において
は、ストリツプ材が破断することがあり、その際
破断したストリツプ材が、通気性固体を破損させ
る恐れがある。しかしながら通気性固体は、その
性質上、板破断等の外力に対する強度を有してお
らず、炉内に通気性固体を設置する構造が問題と
なる。 On the other hand, in a continuous heat treatment furnace for strip material, the strip material may break, and the broken strip material may damage the air-permeable solid. However, due to its nature, the breathable solid does not have the strength to withstand external forces such as plate breakage, and the structure of installing the breathable solid in the furnace poses a problem.
（発明の目的）
本発明は以上の点に鑑み、直火無酸化炉におい
て、伝熱効率を上昇させ省エネルギーを計るこ
と、NOF伝熱面構成の変化により、設備長さを
短かくして設備費の低減を計ることを目的とし、
NOF内を通過するストリツプ材の少なくとも上
面上方側に通気性固体を横設した通気性固体壁の
支持を効果的に、かつストリツプの破断等の外力
に対し、高い強度を有する通気性固体壁構造を得
ようとするものである。(Objective of the Invention) In view of the above points, the present invention aims to save energy by increasing heat transfer efficiency in a direct-fired non-oxidation furnace, and to reduce equipment costs by shortening the equipment length by changing the NOF heat transfer surface configuration. The purpose is to measure
A breathable solid wall structure in which a breathable solid wall is placed horizontally at least on the upper side of the strip material passing through the NOF, which effectively supports the breathable solid wall and has high strength against external forces such as strip breakage. It is an attempt to obtain.
なお、ここでいう通気性固体とは、通気性と適
度の圧損を有する多孔質材のことで、金属系では
発泡金属、焼結金属等があり、耐火系ではセラミ
ツク多孔体、ポーラスSiC、アルミナボール結合
体等のものがある。 Note that the breathable solid here refers to a porous material that has air permeability and a suitable pressure drop.Metallic materials include foamed metal, sintered metal, etc., and fireproof materials include porous ceramics, porous SiC, and alumina. There are things such as ball joints.
（発明の構成）
一般にこの種の通気性固体は多孔質であるた
め、通気性固体と通過ガス間の熱移動規象は、粉
粒体の充填層伝熱に略近似しており、通気性固体
の相当直径が0.1〜１mm程度であれば、102〜
103Kcal／m2ｈ℃といつた大きな対流熱伝達係数
が得られるため、通気性固体の表面温度は、略瞬
間的にガス温度近くまで加熱（もしくは冷却）さ
れるという特徴を有したものである。(Structure of the Invention) Generally, this type of air-permeable solid is porous, so the heat transfer regime between the air-permeable solid and the passing gas is approximately similar to the heat transfer in a packed bed of powder and granular material. If the equivalent diameter of the solid is about 0.1 to 1 mm, 10 2 to
Because a large convective heat transfer coefficient of 10 3 Kcal/m 2 h°C can be obtained, the surface temperature of an air-permeable solid is almost instantaneously heated (or cooled) to near the gas temperature. It is.
そして本発明の特徴は、分割タイプの通気性固
体を、高温強度を有する金網と、通気性固体破損
時等の通気性固体落下防止用の金網とではさみ、
その金網を吊具及び支持煉瓦で支持することにあ
る。 The feature of the present invention is that a split type breathable solid is sandwiched between a wire mesh having high temperature strength and a wire mesh for preventing the breathable solid from falling when the breathable solid is damaged.
The purpose is to support the wire mesh with hanging tools and supporting bricks.
以下図面によつて、本発明の実施例を説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
ストリツプ上方の通気性固体５を支持するため
に、天井から耐熱性を有した吊具７を設け、この
耐熱吊具により、格子状又は網状の支持板状体１
３−１（以下支持板状１３−１という）を横架す
る。耐熱吊具は、耐熱吊具の強度、通気性固体５
の大きさにより、ライン方向及びライン直角方向
にある間隔をおいて設置する。この耐熱吊具は、
炉温に応じセラミツクあるいは耐熱金属を用いる
ものとし両端にネジを切つた構造とする。 In order to support the breathable solid body 5 above the strip, a heat-resistant hanging device 7 is provided from the ceiling.
3-1 (hereinafter referred to as support plate 13-1) is horizontally mounted. The heat-resistant hanging tool has the strength of the heat-resistant hanging tool, breathable solid 5
They are installed at certain intervals in the line direction and in the direction perpendicular to the line, depending on the size of the line. This heat-resistant hanging tool is
Ceramic or heat-resistant metal shall be used depending on the furnace temperature, and the structure shall be threaded at both ends.
支持板状体１３−１の上に、通気性固体５を設
置するが、この通気性固体５は一般的に強度が小
さい。従つて板破断時等にストリツプが通気性固
体５に当り、通気性固体に決定的なダメージを与
えないよう支持板状体１３−１は、通気性固体５
の保護を１つの役割とする。又、通気性固体５に
亀裂等が発生した場合にも、その破片が、落下す
ることのないようガス流れに支障をきたさない程
度に、細かな格子を有するものとする。下端に
は、ナツトワツシヤー８を取付け、このナツトワ
ツシヤー８に支持板状体１３−１を乗せかける構
造とする。 A breathable solid 5 is installed on the support plate-shaped body 13-1, but this breathable solid 5 generally has low strength. Therefore, in order to prevent the strip from hitting the breathable solid 5 and causing decisive damage to the breathable solid 5 when the plate breaks, the supporting plate-like body 13-1 is attached to the breathable solid 5.
One of its roles is to protect the Further, even if a crack or the like occurs in the breathable solid 5, the lattice is so fine as to prevent the fragments from falling and thereby not interfering with the gas flow. A nut washer 8 is attached to the lower end, and a supporting plate-shaped body 13-1 is placed on this nut washer 8.
さらに通気性固体５の上には、通気性固体５の
ガス流れによる浮き上り防止及び破片の飛散を防
ぐため、格子状又は網状の押付板状体１４−１
（以下押付板状体１４−１という）を設置する。
この押付板状体１４−１は、高温強度は要しな
い。又、この押付板状体１４−１を押さえる為、
ナツトワツシヤー９をさらに取付けることも可能
である。 Furthermore, a grid-like or net-like pressing plate-like body 14-1 is placed on the breathable solid 5 in order to prevent the breathable solid 5 from floating up due to the gas flow and to prevent fragments from scattering.
(hereinafter referred to as the pressing plate-like body 14-1) is installed.
This pressing plate-shaped body 14-1 does not require high-temperature strength. Also, in order to press this pressing plate-shaped body 14-1,
It is also possible to install additional nut washers 9.
ストリツプの上方には通気性固体５の効果をよ
り大きくするため、ガス流れを第２図の実矢線の
ような流れとすることを目的とした吊煉瓦構造の
仕切壁１１を、ライン方向に所定間隔ごとに設置
する。この仕切壁は、通気性固体の支持にも利用
できるものとする。 Above the strip, in order to further increase the effect of the gas permeable solid 5, a partition wall 11 of a hanging brick structure is installed in the line direction, with the purpose of making the gas flow as shown by the actual arrow line in Fig. 2. Install at predetermined intervals. This partition wall can also be used to support breathable solids.
ストリツプ１の下方に通気性固体６を配設する
実施例においては、ストリツプ下方の通気性固体
６を支持するために、耐火煉瓦１０を、ライン直
角方向には所定間隔をおいて、ライン方向には連
続して設置する。この煉瓦の上に、通気性固体の
破片落下防止用の格子状又は網状の支持板状体１
４−２を設け、その上に通気性固体６を設置す
る。さらに、その通気性固体の上に、通気性固体
保護用の格子状又は網状の板状体１３−２を設置
する。この格子状又は網状の板状体１３−２は、
ストリツプ上方の１３−１と同様、通気性固体の
保護の役割を持つ。 In the embodiment in which the breathable solid body 6 is disposed below the strip 1, firebricks 10 are placed in the line direction at predetermined intervals in the direction perpendicular to the line in order to support the breathable solid body 6 below the strip. are installed consecutively. On top of this brick, a support plate 1 in the form of a lattice or mesh for preventing the falling of pieces of breathable solids.
4-2, and a breathable solid 6 is placed thereon. Furthermore, a grid-like or net-like plate-like body 13-2 for protecting the breathable solid is installed on the breathable solid. This lattice-like or net-like plate-like body 13-2 is
Like 13-1 above the strip, it has the role of protecting breathable solids.
さらに支持煉瓦１０は、通気性固体のレベルよ
り上方に積み上げ、板状体と同様に、板破断時等
の通気性固体のプロテクターとして利用する。又
通気性固体６、板状体１３−２、支持板状体１４
−２のずれを防ぐため、所定間隔をおいて、ボル
ト１５及びナツトワツシヤー９を設けることも可
能である。ストリツプ上方と同様に、ライン方向
に所定間隔ごとに仕切壁１２を設置する。 Further, the supporting bricks 10 are stacked above the level of the air permeable solid and used, like the plate-shaped body, as a protector for the air permeable solid when the plate breaks. Also, a breathable solid 6, a plate-like body 13-2, a support plate-like body 14
-2, it is also possible to provide bolts 15 and nut washers 9 at predetermined intervals. Similarly to the upper part of the strip, partition walls 12 are installed at predetermined intervals in the line direction.
本発明は以上の通り伝熱効率を上昇させ、省エ
ネルギーを図ることが可能で、NOF伝熱面構成
の変化により、設備長さを短かくし得て、その工
業的効果は大である。 As described above, the present invention can increase heat transfer efficiency and save energy, and by changing the NOF heat transfer surface configuration, the length of equipment can be shortened, and its industrial effects are great.
第１図は従来のNOFの断面図、第２図は本発
明の通気性固体壁を組込んだNOFのライン方向
の断面図、第３図は第２図の吊具の図でイは断面
図、ロは部分平面図、第４図は第２図のＡ−Ａ断
面図、第５図は第２図のＢ−Ｂ断面図、第６図は
第２図のＣ−Ｃ断面図、第７図はストリツプ下方
の通気性固体部の説明図である。
１：ストリツプ材、２：炉壁、３：搬送装置
（ハースロール）、４：加熱装置、５：通気性固
体、６：通気性固体、７：耐熱吊具、８：ナツト
ワツシヤー、９：ナツトワツシヤー、１０：支持
煉瓦、１１：仕切壁、１２：仕切壁、１３：格子
状（網状）支持板状体、１４：格子状（網状）支
持板状体、１５：ボルト。
Fig. 1 is a cross-sectional view of a conventional NOF, Fig. 2 is a cross-sectional view in the line direction of a NOF incorporating the breathable solid wall of the present invention, and Fig. 3 is a diagram of the hanging device in Fig. 2, where A is a cross-sectional view. 4 is a sectional view taken along the line A-A in FIG. 2, FIG. 5 is a sectional view taken along the line B-B in FIG. 2, and FIG. FIG. 7 is an illustration of the breathable solid portion below the strip. 1: Strip material, 2: Furnace wall, 3: Conveying device (hearth roll), 4: Heating device, 5: Breathable solid, 6: Breathable solid, 7: Heat-resistant hanger, 8: Natsutowashire, 9: Natsutowashire, 10: Support brick, 11: Partition wall, 12: Partition wall, 13: Grid-like (mesh-like) support plate-like body, 14: Grid-like (mesh-like) support plate-like body, 15: Bolt.
Claims (1)
の炉内に、上方より耐熱吊具を複数垂設し、該吊
具の先端側に、格子状又は網状の支持板状体を横
架するとともに、該支持板状体の上面に通気性固
体を敷設し、この通気性固体の上面側に、格子状
又は網状の押付板状体を配設したことを特徴とす
る横型連続加熱炉。1 A plurality of heat-resistant hanging tools are hung from above in the furnace of a horizontal continuous furnace in which the material to be heated is transported horizontally, and a lattice-like or net-like support plate-like body is horizontally mounted on the tip side of the hanging tools. A horizontal continuous heating furnace characterized in that a breathable solid is laid on the upper surface of the support plate, and a lattice-shaped or net-shaped pressing plate is disposed on the upper surface of the breathable solid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1435584A JPS60159125A (en) | 1984-01-31 | 1984-01-31 | Horizontal type continuous heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1435584A JPS60159125A (en) | 1984-01-31 | 1984-01-31 | Horizontal type continuous heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60159125A JPS60159125A (en) | 1985-08-20 |
| JPS6314048B2 true JPS6314048B2 (en) | 1988-03-29 |
Family
ID=11858757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1435584A Granted JPS60159125A (en) | 1984-01-31 | 1984-01-31 | Horizontal type continuous heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60159125A (en) |
-
1984
- 1984-01-31 JP JP1435584A patent/JPS60159125A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60159125A (en) | 1985-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4721460A (en) | Tile firing support structure | |
| CZ292109B6 (en) | Waterwall heat transfer system and refractory tube block for such system | |
| JPS6314048B2 (en) | ||
| US4494929A (en) | Continuous heat treatment furnace | |
| JPH0323833B2 (en) | ||
| CN114688878A (en) | High-temperature-zone lining, graphitizing furnace lining and graphitizing furnace | |
| CN106979685A (en) | A kind of colored porcelain shuttle-type kiln system | |
| JP2010236797A (en) | Roller hearth kiln | |
| JPS6229490B2 (en) | ||
| JPS5941519Y2 (en) | Tunnel kiln heat recovery equipment | |
| JPS6335353Y2 (en) | ||
| CN109983291A (en) | Wall system, the smelting furnace including this wall system and the method for this wall system to be arranged for smelting furnace | |
| JP2862974B2 (en) | Firing method and firing jig for ceramic products | |
| JPH0142800Y2 (en) | ||
| JPH08327252A (en) | Truck for baking furnace | |
| SU1474423A1 (en) | Ring furnace | |
| JPH0124560Y2 (en) | ||
| JPS6244985Y2 (en) | ||
| JPH0410552Y2 (en) | ||
| JP2003050090A (en) | Heat treating furnace | |
| JPS638746Y2 (en) | ||
| JPH0731120Y2 (en) | Reinforcement structure of furnace furnace refractory | |
| SU1611937A1 (en) | Method of protecting fixed structures from thermal effect of smelting products | |
| JPH0548078Y2 (en) | ||
| SU1075068A2 (en) | Furnace for loose material thermal treatment |