JP3745599B2

JP3745599B2 - Rolled sheet stave cooler

Info

Publication number: JP3745599B2
Application number: JP2000207764A
Authority: JP
Inventors: 啓友森光; 隆昭奥田
Original assignee: Nippon Steel Corp
Current assignee: Nippon Steel Corp
Priority date: 2000-07-10
Filing date: 2000-07-10
Publication date: 2006-02-15
Anticipated expiration: 2020-07-10
Also published as: JP2002030314A

Description

【０００１】
【発明の属する技術分野】
本発明は、高炉の炉壁に立設され、鋼または銅の圧延板内に冷却水路が形成された圧延板製ステーブクーラーに関するものである。
【０００２】
【従来の技術】
従来の高炉の炉壁冷却手段は、冷却盤による冷却とステーブクーラーによる冷却に大別される。冷却盤による冷却においては、高炉稼働後の煉瓦の損耗により炉内のプロフィルが悪化するために、高炉操業に悪影響を及ぼす。ステーブクーラーによる冷却では、その材質によって、鋳鉄、鋳鋼、鋼板等の鉄系材ステーブクーラーと、銅または銅合金材ステーブクーラーとに分類できる。
【０００３】
鋳鉄へ鋳込まれた管により冷却水路を形成したステーブクーラーは、特開平６−３０６４２１号公報や特開平８−８５８０８号公報により既に公知である。これらのステーブクーラーは鋳鉄の低い熱伝導率のため、また、酸化物層または空気断熱層によって生じる冷却管と鋳鉄との間の熱伝達抵抗のため、奪熱能が低く抑えられている。
【０００４】
稼働後に高炉煉瓦積みが損耗した場合、ステーブクーラーの炉内面は、炉内高温ガスに直接さらされる。鋳鉄製のステーブクーラーでは、熱伝達抵抗が大きいために、炉内面の冷却が不十分であり、炉内面の摩耗の促進は避けられず、それにより寿命が制限されている。
【０００５】
さらに鋳銅からなるステーブクーラーが公知であり、冷却水路は鋳込まれる管によって形成されるか、または中子による鋳抜きによって形成される。鋳銅の組織は、鍛造や圧延された銅と比較して粗く均質ではなく、鋳銅の熱伝導はやや劣り強度も低い。また、管が鋳込まれる場合には鋳込み管と鋳銅の間での熱伝達抵抗が問題になる。
【０００６】
特公昭６３−５６２８３号公報には、銅または銅合金の鍛造材または圧延材から製造されたステーブクーラーが開示されている。その冷却水路は鉛直に延びる盲穴であり、これらの盲穴は機械的深穴開けにより設けられる。鍛造銅や圧延銅の組織は、鋳銅と比較して緻密かつ均質である。そして鋳銅で発生するようなひけ巣もないため強度も強く、熱伝導率も高い。
【０００７】
【発明が解決しようとする課題】
しかし、上記特公昭６３−５６２８３号公報の鍛造材や圧延材に穿孔したステーブクーラーでは、図７に示すように、冷却水路が長手方向に平行なＩ字形水路１０のみで形成され、各Ｉ字形水路１０のそれぞれに給水孔１２および排水孔１３が設けられていた。このため、該ステーブクーラーを冷却盤を使用していた高炉に取付ける場合、高炉の鉄皮には、給排水用の鉄皮開孔部１６を各給水孔１２および排水孔１３に合わせて、新たに設ける必要があった。
【０００８】
また上記特公昭６３−５６２８３号公報のステーブクーラーにおいては、冷却能力を向上させるため、材質として銅板や圧延材が採用されているが、いずれも材質に関する技術で、この材質を採用してさらに冷却能力を向上させるための冷却水路の形状については開示された技術がなかった。
【０００９】
そこで本発明が解決しようとする課題は、高炉の炉壁に立設され、緻密かつ均質な組織を有し熱伝導率が高く強度も高い圧延板製のステーブクーラーにおいて、圧延板内の冷却水路の形状によって冷却能力を向上させると共に、給排水用には鉄皮に開けられている既存の開孔を使用することのできるステーブクーラーを提供することである。
【００１０】
【課題を解決するための手段】
上記課題を解決するための本発明の第１発明は、高炉の炉壁に立設される鋼または銅の圧延板製ステーブクーラーにおいて、圧延板内に左右両辺に沿う２本の縦水路が穿孔され、また上下両辺に沿う４本の横水路が前記縦水路に接続して圧延板の両端から２本ずつ穿孔されて、互いに向合う１対のコ字形水路が形成され、該コ字形水路の圧延板端面の開ロがプラグにより閉塞され、該コ字形水路の向合う一方の両端部に、圧延板外側表面に通じる給水孔を隣接して設けると共に、該コ字形水路の向合う他方の両端部に、圧延板外側表面に通じる排水孔を隣接して設けていることを特徴とする圧延板製ステーブクーラーである。
【００１１】
第２発明は、高炉の炉壁に立設される鋼または銅の圧延板製ステーブクーラーにおいて、圧延板内に左右両辺に沿う２本の縦水路が穿孔され、また上下両辺に沿う２本の横水路が前記縦水路に接続して圧延板の両端から１本ずつ互いに逆方向に穿孔されて、互いに向合う１対のＬ字形水路が形成され、該Ｌ字形水路の圧延板端面の開口がプラグにより閉塞され、該Ｌ字形水路の端部から圧延板外側表面に通じる給水孔および排水孔が設けられていることを特徴とする圧延板製ステーブクーラーである。
【００１２】
第３発明は、高炉の炉壁に立設される鋼または銅の圧延板製ステーブクーラーにおいて、圧延板内に上端から２本の斜水路が互いに間隔を広げる方向に穿孔され、また下端からも２本の斜水路が互いに間隔を広げる方向に穿孔され、前記上端から穿孔された斜水路と接続して、互いに向合う１対のく字形水路が形成され、該く字形水路の圧延板端面の開口がプラグにより閉塞され、該く字形水路の端部から圧延板外表面に通じる給水孔および排水孔が設けられていることを特徴とする圧延板製ステーブクーラーである。
【００１３】
第４発明は、高炉の炉壁に立設される鋼または銅の圧延板製ステーブクーラーにおいて、第１発明における１対のコ字形水路および第３発明における１対のく字形水路が形成されて、該各水路の圧延板端面の開口がプラグにより閉塞され、該各水路の端部から圧延板外表面に通じる給水孔および排水孔が設けられていることを特徴とする圧延板製ステーブクーラーである。
【００１４】
第５発明は、高炉の炉壁に立設される鋼または銅の圧延板製ステーブクーラーにおいて、第２発明における１対のＬ字形水路および第３発明における１対のく字形水路が形成されて、該各水路の圧延板端面の開口がプラグにより閉塞され、該各水路の端部から圧延板外表面に通じる給水孔および排水孔が設けられていることを特徴とする圧延板製ステーブクーラーである。
【００１５】
【発明の実施の形態】
本発明のステーブクーラーは、高炉の炉壁に立設される鋼または銅の圧延板製ステーブクーラーにおいて、圧延板内に形成される冷却水路の形状に特徴を有するものである。
本発明の第１発明ステーブクーラーを図１の例により説明する。図１（ａ）は高炉の炉壁に立設した状態の正面図、図１（ｂ）は側面図、図１（ｃ）は底面図であり、この状態で炉壁の周方向全周に並べ、また上下方向には所要段数にわたって設置される。また第２〜第５発明ステーブクーラーも、同様にして高炉に設置される。
【００１６】
第１発明ステーブクーラーは、図１（ａ）の例に示すように、圧延板１内に左右両辺に沿う２本の縦水路２a および２b が穿孔され、また上下両辺に沿う４本の横水路３a ，４a および３b ，４b が圧延板１の両端から穿孔されて、互いに向合う１対のコ字形水路７a ，７b が形成されている。すなわち、横水路３a および４a は縦水路２a に接続して一方のコ字形水路７a を形成し、横水路３b および４b は縦水路２b に接続してもう一方のコ字形水路７b を形成している。
【００１７】
そして図１（ａ）（ｂ）（ｃ）に示すように、コ字形水路７a および７b の圧延板端面の開口はプラグ１１により閉塞されている。また、コ字形水路７a の端部には、圧延板外側表面に通じる給水孔１２a および排水孔１３a が設けられ、コ字形水路７b の端部には圧延板外側表面に通じる給水孔１２b および排水孔１３b が設けられている。
【００１８】
このような第１発明ステーブクーラーを製造するには、圧延板１の端面から図１（ａ）（ｂ）（ｃ）に示すような縦水路２および横水路３，４を穿孔し、端面の開口をプラグ１１で閉塞してコ字形水路７とする。縦水路２は、図１の例では上下に貫通して穿孔した後、上端および下端の開口をプラグ１１で閉塞しているが、上端または下端を残して穿孔した後、開口をプラグ１１で閉塞してもよい。横水路３，４は、縦水路２と接続する位置に、左右両端から給水孔１２および排水孔１３の位置まで穿孔する。プラグ１１は圧延板端面の開口に捩じ込んでもよく、溶接してもよい。
【００１９】
そして、圧延板外側表面から横水路３，４の先端まで穿孔して給水孔１２および排水孔１３を形成し、給水パイプ１４および排水パイプ１５を取付ける。給水孔１２および排水孔１３の位置は、既存の鉄皮開孔部１６の位置に合わせて設ける。図１では圧延板１の幅方向中央部に設けているが、鉄皮開孔部１６の位置に合わせて、左右にずらせてあってもよい。
【００２０】
第２発明ステーブクーラーは、図２の例に示すように、圧延板１内に左右両辺に沿う２本の縦水路２a および２b が穿孔され、また上下両辺に沿う２本の横水路３a および４b が圧延板１の両端から互いに逆方向に穿孔されて、互いに向合う１対のＬ字形水路８a ，８b が形成されている。すなわち、横水路３a は縦水路２a に接続して一方のＬ字形水路８a を形成し、横水路４b は縦水路２b に接続してもう一方のＬ字形水路８b を形成している。
【００２１】
そして、Ｌ字形水路８a および８b の圧延板端面の開口はプラグ１１により閉塞されている。また、Ｌ字形水路８a の端部には、圧延板外側表面に通じる給水孔１２a および排水孔１３a が設けられ、Ｌ字形水路８b の端部には圧延板外側表面に通じる給水孔１２b および排水孔１３b が設けられている。
なお図２〜図６においては、側面図および底面図を省略しているが、図１におけると同様、圧延板１の内部に各水路が穿孔により形成されている。
【００２２】
このような第２発明ステーブクーラーを製造するには、圧延板１の端面から図２に示すような縦水路２および横水路３，４を穿孔し、端面の開口をプラグ１１で閉塞してＬ字形水路８とする。縦水路２は、図２の例では、２a は上端を残し２b は下端を残して穿孔し、開口をプラグ１１で閉塞しているが、上下に貫通して穿孔した後、上端および下端の開口を閉塞してもよい。横水路３a は、縦水路２a と接続する位置に左端から給水孔１２a の位置まで穿孔し、横水路４b は、縦水路２b と接続する位置に右端から排水孔１３b の位置まで穿孔する。プラグ１１は圧延板端面の開口に捩じ込んでもよく、溶接してもよい。
【００２３】
そして、圧延板外側表面から横水路３a および縦水路２b の先端までそれぞれ穿孔して給水孔１２a および１２b を形成し、縦水路２a および横水路４b の先端までそれぞれ穿孔して排水孔１３a および１３b を形成する。また、給水孔１２a および１２b に給水パイプ１４a および１４b を取付け、排水孔１３a および１３b に排水パイプ１５a および１５b を取付ける。給水孔１２および排水孔１３の位置は、第２発明においては圧延板１のコーナー部になる。
【００２４】
第３発明ステーブクーラーは、図３の例に示すように、圧延板１内に上端から２本の斜水路６a および６b が互いに間隔を広げる方向に穿孔され、また下端からも２本の斜水路５a および５b が互いに間隔を広げる方向に穿孔され、斜水路５a と６a が接続してく字形水路９a が形成され、斜水路５b と６b が接続してく字形水路９b が形成され、両く字形水路９a と９b は互いに向合っている。
そして、く字形水路９a および９b の圧延板端面の開口がプラグ１１により閉塞されている。また、く字形水路９a および９b の端部には、圧延板外表面に通じる給水孔１２a および１２b と排水孔１３a および１３b が設けられている。
【００２５】
このような第３発明ステーブクーラーを製造するには、圧延板１の端面から図３に示すような斜水路５，６を穿孔し、端面の開口をプラグ１１で閉塞してく字形水路９とする。斜水路５，６は、図３の例では圧延板１の縦方向中央部まで穿孔して接続させているが、いずれか一方または双方を圧延板１の側面まで貫通させた後、開口を閉塞してもよい。プラグ１１は、開口の形状により捩じ込んでもよく、また溶接してもよい。
【００２６】
そして、圧延板外側表面から斜水路５a および５b の先端までそれぞれ穿孔して給水孔１２a および１２b を形成し、斜水路６a および６b の先端までそれぞれ穿孔して排水孔１３a および１３b を形成する。また、給水孔１２a および１２b に給水パイプ１４a および１４b を取付け、排水孔１３a および１３b に排水パイプ１５a および１５b を取付ける。給水孔１２および排水孔１３の位置は、既存の鉄皮開孔部１６の位置に合わせて設ける。図３の例は圧延板１の幅方向中央部に設けているが、鉄皮開孔部１６の位置に合わせて左右にずらしてあってもよい。
【００２７】
第４発明ステーブクーラーは、図４の例に示すように、１対のコ字形水路７a ，７b および１対のく字形水路９a ，９b が形成されて、各水路７a ，７b ，９a ，９b の圧延板端面の開口がプラグ１１により閉塞され、各水路の端部から圧延板外表面に通じる給水孔１２a ，１２b および排水孔１３a ，１３b が設けられている。コ字形水路７a ，７b は第１発明におけると同様のもの、く字形水路９a ，９b は第３発明におけると同様のものである。給水孔１２および排水孔１３の位置は、図４のように圧延板１の幅方向中央部に集約して設けるほか、既設の鉄皮開孔部１６の位置に合わせて左右にずらしてあってもよい。
【００２８】
第５発明ステーブクーラーは、図５の例に示すように、１対のＬ字形水路８a ，８b および１対のく字形水路９a ，９b が形成されて、各水路８a ，８b ，９a ，９b の圧延板端面の開口がプラグ１１により閉塞され、各水路の端部から圧延板外表面に通じる給水孔１２a ，１２b および排水孔１３a ，１３b が設けられている。Ｌ字形水路８a ，８b は第２発明におけると同様のもの、く字形水路９a ，９b は第３発明におけると同様のものである。給水孔１２および排水孔１３の位置は、図５のように圧延板１のコーナー部に集約して設ける。
【００２９】
なお図６は第４発明ステーブクーラーの別の例を示し、図４のようなコ字形水路７a ，７b およびく字形水路９a ，９b のほか、Ｉ字形水路１０が形成され、Ｉ字形水路１０の両端に給水孔１２c および排水孔１３c が設けられている。また第１〜第３および第５発明各ステーブクーラーにおいても、同様にＩ字形水路１０が形成され、給水孔１２c および排水孔１３c が設けられていてもよい。
【００３０】
【発明の効果】
以上説明したような構成からなる本発明の各ステーブクーラーは、以下のような優れた効果を発揮する。
（１）ステーブクーラーの母材の材質としては、組織が緻密でかつ均質であり、強度も熱伝導率も高い圧延材を利用できる。
（２）給水パイプ群と排水パイプ群をまとめて設置できることにより、該ステーブクーラーを冷却盤を使用していた高炉内にその鉄皮を流用して取り付ける場合に、既設の鉄皮開孔部をそのまま使用することができ、新たな鉄皮開孔を必要としない。
（３）工事期間を大幅に短縮でき、高炉休止期間を短縮できる。
（４）鉄皮に新たな開孔を開けないので、鉄皮強度を低減することがない。
（５）ステーブクーラー外周を冷却できるので、ステーブクーラー外縁部からの損耗に対して耐力を発揮し、さらに長寿命が期待できる。
【図面の簡単な説明】
【図１】本発明の第１発明ステーブクーラーの例を示し、（ａ）は正面図、（ｂ）は側面図、（ｃ）は底面図である。
【図２】本発明の第２発明ステーブクーラーの例を示す正面図である。
【図３】本発明の第３発明ステーブクーラーの例を示す正面図である。
【図４】本発明の第４発明ステーブクーラーの例を示す正面図である。
【図５】本発明の第５発明ステーブクーラーの例を示す正面図である。
【図６】本発明の第４発明ステーブクーラーの別の例を示す正面図である。
【図７】従来のステーブクーラーの例を示す正面図である。
【符号の説明】
１…圧延板２…縦水路
３，４…横水路５，６…斜水路
７…コ字形水路８…Ｌ字形水路
９…く字形水路１０…Ｉ字形水路
１１…プラグ１２…給水孔
１３…排水孔１４…給水パイプ
１５…排水パイプ１６…鉄皮開孔部[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a rolled sheet stave cooler which is erected on a furnace wall of a blast furnace and has a cooling water channel formed in a rolled sheet of steel or copper.
[0002]
[Prior art]
Conventional furnace wall cooling means of a blast furnace is roughly divided into cooling by a cooling plate and cooling by a stave cooler. Cooling by a cooling panel adversely affects the operation of the blast furnace because the profile in the furnace deteriorates due to the wear of bricks after the operation of the blast furnace. Cooling by a stave cooler can be classified into iron-based material stave coolers such as cast iron, cast steel, and steel plates, and copper or copper alloy stave coolers depending on the material.
[0003]
A stave cooler in which a cooling water channel is formed by a pipe cast into cast iron is already known from JP-A-6-306421 and JP-A-8-85808. These stave coolers have a low heat removal capability because of the low thermal conductivity of cast iron and because of the heat transfer resistance between the cooling pipe and cast iron caused by the oxide layer or air insulation layer.
[0004]
When the blast furnace brickwork is worn after operation, the furnace inner surface of the stave cooler is directly exposed to the high temperature gas in the furnace. In cast iron stave coolers, the heat transfer resistance is large, so that the cooling of the furnace inner surface is insufficient, and the promotion of wear on the furnace inner surface is inevitable, thereby limiting the life.
[0005]
Further, a stave cooler made of cast copper is known, and the cooling water channel is formed by a pipe to be cast or by core casting. The structure of cast copper is not coarse and homogeneous compared to forged or rolled copper, and the heat conduction of cast copper is somewhat inferior and its strength is low. Moreover, when a pipe is cast, heat transfer resistance between the cast pipe and cast copper becomes a problem.
[0006]
Japanese Patent Publication No. 63-56283 discloses a stave cooler manufactured from a copper or copper alloy forging or rolling material. The cooling water channel is a blind hole extending vertically, and these blind holes are provided by mechanical deep drilling. The structure of wrought copper or rolled copper is dense and homogeneous compared to cast copper. And since there is no sinkhole that occurs in cast copper, it has high strength and high thermal conductivity.
[0007]
[Problems to be solved by the invention]
However, in the stave cooler perforated in the forged or rolled material of the above Japanese Patent Publication No. 63-56283, as shown in FIG. 7, the cooling water channel is formed by only the I-shaped water channel 10 parallel to the longitudinal direction, and each I-shaped A water supply hole 12 and a drain hole 13 were provided in each of the water channels 10. For this reason, when the stave cooler is attached to a blast furnace that used a cooling panel, the iron skin opening 16 for water supply / drainage is newly added to the water supply holes 12 and the water discharge holes 13 in the blast furnace core. It was necessary to install.
[0008]
In the stave cooler disclosed in Japanese Patent Publication No. Sho 63-56283, a copper plate or a rolled material is used as a material in order to improve the cooling capacity. There was no disclosed technique for the shape of the cooling water channel for improving the capacity.
[0009]
Accordingly, the problem to be solved by the present invention is to provide a cooling water channel in a rolled plate in a stave cooler made of a rolled plate that is erected on the furnace wall of a blast furnace and has a dense and homogeneous structure and high thermal conductivity and high strength. It is to provide a stave cooler that can improve the cooling capacity by the shape of the water and can use an existing hole formed in the iron skin for water supply and drainage.
[0010]
[Means for Solving the Problems]
A first invention of the present invention for solving the above problems is a steel or copper rolled plate stave cooler standing on the furnace wall of a blast furnace. In the rolled plate, two vertical water channels along the left and right sides are perforated. In addition, four horizontal water channels along both the upper and lower sides are connected to the vertical water channel and two holes are drilled from both ends of the rolled plate to form a pair of U-shaped water channels facing each other. Opening of the end face of the rolled plate is closed by a plug , and water supply holes leading to the outer surface of the rolled plate are provided adjacent to both ends of the U-shaped water channel facing each other, and the other ends of the U-shaped water channel facing each other. A rolled plate stave cooler characterized in that a drainage hole communicating with the outer surface of the rolled plate is provided adjacent to the part.
[0011]
The second invention is a steel or copper rolled plate stave cooler erected on the furnace wall of a blast furnace, in which two vertical water channels along the left and right sides are perforated in the rolled plate, and two vertical channels along the upper and lower sides A horizontal water channel is connected to the vertical water channel and is drilled in opposite directions one by one from both ends of the rolled plate to form a pair of L-shaped water channels facing each other, and an opening at the end surface of the rolled plate of the L-shaped water channel is formed. A rolled sheet stave cooler characterized in that a water supply hole and a drain hole which are closed by a plug and communicate from the end of the L-shaped water channel to the outer surface of the rolled sheet are provided.
[0012]
According to a third aspect of the present invention, there is provided a steel or copper rolled plate stave cooler erected on the furnace wall of a blast furnace. Two oblique water channels are perforated in a direction to increase the distance between them, and are connected to the oblique water channel drilled from the upper end to form a pair of rectangular water channels facing each other. A rolled sheet stave cooler characterized in that the opening is closed by a plug, and water supply holes and drain holes are provided from the end of the rectangular channel to the outer surface of the rolled sheet.
[0013]
According to a fourth aspect of the present invention, there is provided a steel or copper rolled plate stave cooler standing on the furnace wall of the blast furnace, wherein the pair of U-shaped water channels in the first invention and the pair of rectangular water channels in the third invention are formed. The rolled plate stave cooler is characterized in that the opening of the end surface of the rolled plate of each water channel is closed by a plug, and a water supply hole and a drain hole are provided from the end of each water channel to the outer surface of the rolled plate. is there.
[0014]
According to a fifth aspect of the present invention, there is provided a steel or copper rolled plate stave cooler standing on the furnace wall of the blast furnace, wherein the pair of L-shaped water channels in the second invention and the pair of rectangular water channels in the third invention are formed. The rolled plate stave cooler is characterized in that the opening of the end surface of the rolled plate of each water channel is closed by a plug, and a water supply hole and a drain hole are provided from the end of each water channel to the outer surface of the rolled plate. is there.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The stave cooler of the present invention is a steel or copper rolled plate stave cooler standing on the furnace wall of a blast furnace and is characterized by the shape of a cooling water channel formed in the rolled plate.
The first invention stave cooler of the present invention will be described with reference to the example of FIG. 1 (a) is a front view of the blast furnace standing on the furnace wall, FIG. 1 (b) is a side view, and FIG. 1 (c) is a bottom view. They are arranged over the required number of rows in the vertical direction. The second to fifth invention stave coolers are also installed in the blast furnace in the same manner.
[0016]
In the first invention stave cooler, as shown in the example of FIG. 1 (a), two vertical water channels 2a and 2b along the left and right sides are perforated in the rolled plate 1, and four horizontal water channels along both the upper and lower sides. 3a, 4a and 3b, 4b are perforated from both ends of the rolled plate 1 to form a pair of U-shaped water channels 7a, 7b facing each other. That is, the horizontal water channels 3a and 4a are connected to the vertical water channel 2a to form one U-shaped water channel 7a, and the horizontal water channels 3b and 4b are connected to the vertical water channel 2b to form the other U-shaped water channel 7b. .
[0017]
As shown in FIGS. 1A, 1B and 1C, the openings of the rolled plate end faces of the U-shaped water channels 7a and 7b are closed by plugs 11. Further, at the end of the U-shaped water channel 7a, a water supply hole 12a and a drain hole 13a leading to the outer surface of the rolled plate are provided, and at the end of the U-shaped water channel 7b, a water supply hole 12b and a drain hole leading to the outer surface of the rolled plate. 13b is provided.
[0018]
In order to manufacture such a first invention stave cooler, the vertical water channel 2 and the horizontal water channels 3 and 4 as shown in FIGS. 1 (a), (b) and (c) are drilled from the end surface of the rolled plate 1, and the end surface The opening is closed with a plug 11 to form a U-shaped water channel 7. In the example shown in FIG. 1, the vertical water channel 2 is perforated through the top and bottom, and the upper and lower openings are closed by the plug 11. However, after the upper end or the lower end is perforated, the opening is closed by the plug 11. May be. The horizontal water channels 3 and 4 are drilled at positions where they are connected to the vertical water channel 2 from the left and right ends to the positions of the water supply holes 12 and the drain holes 13. The plug 11 may be screwed into the opening on the end face of the rolled plate or may be welded.
[0019]
And it drills from the rolling plate outer surface to the front-end | tip of the horizontal water channels 3 and 4, the water supply hole 12 and the drainage hole 13 are formed, and the water supply pipe 14 and the drainage pipe 15 are attached. The positions of the water supply hole 12 and the drain hole 13 are provided in accordance with the position of the existing iron skin opening 16. In FIG. 1, it is provided at the center in the width direction of the rolled plate 1, but it may be shifted to the left and right in accordance with the position of the iron-hole opening 16.
[0020]
In the second invention stave cooler, as shown in the example of FIG. 2, two vertical water channels 2a and 2b along the left and right sides are perforated in the rolled plate 1, and two horizontal water channels 3a and 4b along both the upper and lower sides. Are drilled in opposite directions from both ends of the rolled plate 1 to form a pair of L-shaped water channels 8a and 8b facing each other. That is, the horizontal water channel 3a is connected to the vertical water channel 2a to form one L-shaped water channel 8a, and the horizontal water channel 4b is connected to the vertical water channel 2b to form the other L-shaped water channel 8b.
[0021]
And the opening of the rolling plate end surface of L-shaped water channel 8a and 8b is obstruct | occluded with the plug 11. FIG. Further, at the end of the L-shaped water channel 8a, a water supply hole 12a and a drain hole 13a leading to the outer surface of the rolled plate are provided, and at the end of the L-shaped water channel 8b, a water supply hole 12b and a drain hole communicating with the outer surface of the rolled plate. 13b is provided.
2 to 6, the side view and the bottom view are omitted, but as in FIG. 1, each water channel is formed in the rolled plate 1 by perforation.
[0022]
To manufacture such a second invention stave cooler, the vertical water channel 2 and the horizontal water channels 3 and 4 as shown in FIG. Let it be a character-shaped waterway 8. In the example of FIG. 2, the vertical channel 2 is perforated with 2a leaving the upper end and 2b leaving the lower end, and the opening is closed with the plug 11, but after opening up and down, the upper and lower ends are opened. May be occluded. The horizontal water channel 3a is drilled from the left end to the position of the water supply hole 12a at a position connected to the vertical water channel 2a, and the horizontal water channel 4b is drilled from the right end to the position of the drain hole 13b at a position connected to the vertical water channel 2b. The plug 11 may be screwed into the opening on the end face of the rolled plate or may be welded.
[0023]
Then, holes are drilled from the outer surface of the rolled plate to the ends of the horizontal water channel 3a and the vertical water channel 2b to form water supply holes 12a and 12b, respectively, and are drilled to the tips of the vertical water channel 2a and the horizontal water channel 4b to form drain holes 13a and 13b, respectively. Form. Further, the water supply pipes 14a and 14b are attached to the water supply holes 12a and 12b, and the drainage pipes 15a and 15b are attached to the drainage holes 13a and 13b. The positions of the water supply holes 12 and the drain holes 13 are corners of the rolled plate 1 in the second invention.
[0024]
As shown in the example of FIG. 3, the third invention stave cooler has two oblique water channels 6a and 6b drilled in the rolled plate 1 from the upper end in a direction that increases the interval between them, and also two oblique water channels from the lower end. 5a and 5b are perforated in the direction of increasing the distance between them, and the slant channels 5a and 6a are connected to form a character channel 9a, and the slant channels 5b and 6b are connected to form a character channel 9b. And 9b are facing each other.
The openings of the rolled plate end faces of the rectangular water channels 9a and 9b are closed by the plug 11. Further, water supply holes 12a and 12b and drain holes 13a and 13b communicating with the outer surface of the rolled plate are provided at the ends of the rectangular water channels 9a and 9b.
[0025]
In order to manufacture such a third invention stave cooler, the oblique water channels 5 and 6 as shown in FIG. 3 are drilled from the end surface of the rolled plate 1, and the opening of the end surface is closed by the plug 11 to form the character-shaped water channel 9. . In the example of FIG. 3, the slant channels 5 and 6 are connected by drilling up to the central portion in the longitudinal direction of the rolled plate 1, but after either or both are penetrated to the side surface of the rolled plate 1, the opening is closed. May be. The plug 11 may be screwed according to the shape of the opening or may be welded.
[0026]
Then, holes are drilled from the outer surface of the rolled plate to the tips of the oblique water channels 5a and 5b to form water supply holes 12a and 12b, respectively, and are drilled to the tips of the oblique water channels 6a and 6b to form drain holes 13a and 13b. Further, the water supply pipes 14a and 14b are attached to the water supply holes 12a and 12b, and the drainage pipes 15a and 15b are attached to the drainage holes 13a and 13b. The positions of the water supply hole 12 and the drain hole 13 are provided in accordance with the position of the existing iron skin opening 16. Although the example of FIG. 3 is provided at the center in the width direction of the rolled plate 1, it may be shifted to the left or right in accordance with the position of the iron skin opening 16.
[0027]
As shown in the example of FIG. 4, the fourth invention stave cooler is formed with a pair of U-shaped water channels 7a, 7b and a pair of rectangular water channels 9a, 9b, and each of the water channels 7a, 7b, 9a, 9b. The opening of the end face of the rolled plate is closed by a plug 11, and water supply holes 12a and 12b and drain holes 13a and 13b are provided from the end of each water channel to the outer surface of the rolled plate. The U-shaped water channels 7a and 7b are the same as in the first invention, and the U-shaped water channels 9a and 9b are the same as in the third invention. The positions of the water supply holes 12 and the drain holes 13 are provided in the central portion in the width direction of the rolled plate 1 as shown in FIG. 4 and are shifted to the left and right in accordance with the position of the existing iron opening 16. Also good.
[0028]
As shown in the example of FIG. 5, the fifth invention stave cooler is formed with a pair of L-shaped water channels 8a, 8b and a pair of rectangular water channels 9a, 9b, and each of the water channels 8a, 8b, 9a, 9b. The opening of the end face of the rolled plate is closed by a plug 11, and water supply holes 12a and 12b and drain holes 13a and 13b are provided from the end of each water channel to the outer surface of the rolled plate. The L-shaped water channels 8a and 8b are the same as in the second invention, and the L-shaped water channels 9a and 9b are the same as in the third invention. The positions of the water supply holes 12 and the drain holes 13 are collectively provided at the corners of the rolled plate 1 as shown in FIG.
[0029]
FIG. 6 shows another example of the stave cooler according to the fourth invention. In addition to the U-shaped water channels 7a and 7b and the rectangular water channels 9a and 9b as shown in FIG. 4, an I-shaped water channel 10 is formed. Water supply holes 12c and drain holes 13c are provided at both ends. Similarly, in each of the first to third and fifth invention stave coolers, the I-shaped water channel 10 may be formed, and the water supply hole 12c and the drainage hole 13c may be provided.
[0030]
【The invention's effect】
Each stave cooler according to the present invention having the configuration as described above exhibits the following excellent effects.
(1) As the base material of the stave cooler, a rolled material having a dense and homogeneous structure, high strength and high thermal conductivity can be used.
(2) Since the water supply pipe group and the drain pipe group can be installed together, when the iron skin is diverted and installed in the blast furnace where the cooling plate was used, It can be used as it is and does not require a new iron skin opening.
(3) The construction period can be greatly shortened and the blast furnace outage period can be shortened.
(4) Since no new opening is made in the iron skin, the strength of the iron skin is not reduced.
(5) Since the outer periphery of the stave cooler can be cooled, it can withstand the wear from the outer edge of the stave cooler and can be expected to have a longer life.
[Brief description of the drawings]
FIG. 1 shows an example of a first invention stave cooler according to the present invention, where (a) is a front view, (b) is a side view, and (c) is a bottom view.
FIG. 2 is a front view showing an example of a second invention stave cooler of the present invention.
FIG. 3 is a front view showing an example of a third invention stave cooler of the present invention.
FIG. 4 is a front view showing an example of a fourth invention stave cooler of the present invention.
FIG. 5 is a front view showing an example of a stave cooler according to a fifth aspect of the present invention.
FIG. 6 is a front view showing another example of the stave cooler according to the fourth aspect of the present invention.
FIG. 7 is a front view showing an example of a conventional stave cooler.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Rolled plate 2 ... Vertical water channel 3, 4 ... Horizontal water channel 5, 6 ... Diagonal water channel 7 ... U-shaped water channel 8 ... L-shaped water channel 9 ... U-shaped water channel 10 ... I-shaped water channel 11 ... Plug 12 ... Water supply hole 13 ... Drainage Hole 14 ... Water supply pipe 15 ... Drain pipe 16 ... Iron skin opening

Claims

In a steel or copper rolled plate stave cooler standing on the furnace wall of a blast furnace, two vertical water channels along the left and right sides are perforated in the rolled plate, and four horizontal water channels along both the upper and lower sides are A pair of U-shaped water channels facing each other are formed by connecting two holes from both ends of the rolled plate connected to the water channel, and the opening of the rolled plate end surface of the U-shaped water channel is closed by a plug, A water supply hole that leads to the outer surface of the rolled plate is provided adjacent to one end of the water channel, and a drain hole that communicates to the outer surface of the rolled plate is adjacent to the other end of the U-shaped water channel. A stave cooler made of rolled sheet, characterized in that it is provided .

In a steel or copper rolled plate stave cooler standing on the furnace wall of a blast furnace, two vertical water channels along the left and right sides are drilled in the rolled plate, and two horizontal water channels along the upper and lower sides are A pair of L-shaped water channels that are connected to a water channel and are drilled in opposite directions one by one from both ends of the rolled plate are formed, the openings on the end surface of the rolled plate of the L-shaped water channel are closed by plugs, A rolled sheet stave cooler characterized in that a water supply hole and a drain hole are provided from the end of the L-shaped water channel to the outer surface of the rolled sheet.

In a steel or copper rolled plate stave cooler standing on the furnace wall of a blast furnace, two oblique water channels are drilled in the rolled plate from the upper end in a direction that increases the distance from each other, and also two oblique water channels from the lower end Are connected to the oblique water channel drilled from the upper end to form a pair of rectangular water channels facing each other, and the opening of the rolling plate end face of the rectangular water channel is blocked by a plug. A rolled sheet stave cooler characterized in that a water supply hole and a drain hole are provided from the end of the rectangular channel to the outer surface of the rolled sheet.

In a steel or copper rolled plate stave cooler erected on the furnace wall of a blast furnace, a pair of U-shaped water channels in claim 1 and a pair of square water channels in claim 3 are formed. A rolled sheet stave cooler characterized in that an opening on the end face of the rolled sheet is closed by a plug, and water supply holes and drain holes are provided from the ends of the water channels to the outer surface of the rolled sheet.

In a steel or copper rolled plate stave cooler erected on the furnace wall of a blast furnace, a pair of L-shaped water channels in claim 2 and a pair of rectangular water channels in claim 3 are formed. A rolled sheet stave cooler characterized in that the opening of the end face of the rolled sheet is closed by a plug, and water supply holes and drain holes are provided from the ends of the water channels to the outer surface of the rolled sheet.