JP2535445Y2 - Blast furnace taphole opening machine - Google Patents
Blast furnace taphole opening machineInfo
- Publication number
- JP2535445Y2 JP2535445Y2 JP9590491U JP9590491U JP2535445Y2 JP 2535445 Y2 JP2535445 Y2 JP 2535445Y2 JP 9590491 U JP9590491 U JP 9590491U JP 9590491 U JP9590491 U JP 9590491U JP 2535445 Y2 JP2535445 Y2 JP 2535445Y2
- Authority
- JP
- Japan
- Prior art keywords
- guide channel
- blast furnace
- opening
- taphole
- hollow chamber
- 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
Landscapes
- Blast Furnaces (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、高炉の出銑口を開孔す
る出銑口開孔機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taphole opening machine for opening a taphole of a blast furnace.
【０００２】[0002]
【従来の技術】出銑口開孔機においては、ガイドチャン
ネルの直線性が重要である。つまり、開孔作業前に所定
の開孔位置に削孔具をセットするため、また開孔作業中
に開孔機（以下、ドリフターと言う）の動力を確実に先
端に伝達するためには、ガイドチャンネルが直線である
ことが前提になっているからである。この直線性を阻害
する要因としては、開孔時の削孔反力による機械的な変
形と、高炉出銑口周辺の高温雰囲気による熱変形があ
る。前者についてはガイドチャンネルの断面剛性を上げ
る等の設計で十分対処可能である。後者については、直
線性を維持する方法として、従来から圧縮空気による冷
却がなされている。この方法は、ドリフターに使用する
圧縮空気、あるいは専用の圧縮空気を、ガイドチャンネ
ルにそって形成した中空室の中を後端部から先端部にむ
けて流す方法でガイドチャンネルの冷却を行うものであ
る。2. Description of the Related Art In a taphole opening machine, linearity of a guide channel is important. In other words, in order to set the drilling tool at a predetermined drilling position before drilling work, and to surely transmit the power of a drilling machine (hereinafter, referred to as a drifter) to the tip during drilling work, This is because it is assumed that the guide channel is a straight line. Factors that hinder this linearity include mechanical deformation due to the drilling reaction force during drilling and thermal deformation due to the high temperature atmosphere around the blast furnace taphole. The former can be sufficiently dealt with by designing the guide channel to increase the sectional rigidity. As for the latter, cooling with compressed air has been conventionally performed as a method of maintaining linearity. This method cools the guide channel by flowing compressed air used for the drifter or dedicated compressed air from the rear end to the front end through the hollow chamber formed along the guide channel. is there.
【０００３】[0003]
【考案が解決しようとする課題】ところが、最近はガイ
ドチャンネルの空気冷却だけでは不十分な状況となって
いる。その理由としては、出銑口開孔作業方法として、
マッドガンにて閉塞作業終了後、マッドが未焼成のうち
に金棒を使用して開孔し残置する方法（事前開孔、ある
いは早打ち開孔とも言われ、次回出銑時には金棒をひき
ぬくものである）が採用されるようになったからであ
る。この出銑作業の終了直後の事前開孔方法では、出銑
口開孔機の直下にある大樋内に残った溶銑滓のふく射熱
等（溶銑滓の表面は約８００℃）のために極めて高温の
雰囲気となり、ガイドチャンネルの熱変形（主に下面が
熱を受け長手方向でそりかえる変形）が生じ、空気冷却
だけでは十分に対処できない状況が発生した。However, recently, it has been insufficient to cool the guide channel by air alone. The reason is that as a tap hole opening work method,
After closing work with a mud gun, a method is used in which the mud is opened and left using a metal rod while it is not yet fired (also called pre-opening or quick-opening, and the next time tapping is performed, the rod is pulled out) This is because it has been adopted. In the pre-opening method immediately after the completion of the tapping operation, the extremely high temperature due to the radiant heat of the hot metal remaining in the large gutter immediately below the taphole drilling machine (the surface of the hot metal slag is approximately 800 ° C) The atmosphere became, and the guide channel was thermally deformed (mainly, the lower surface was deformed by receiving heat in the longitudinal direction), and a situation occurred in which the air channel alone could not sufficiently cope.
【０００４】事前開孔方法の採用は、溶銑の製造コスト
に大きく寄与する出銑回数の減少をねらって、長時間出
銑が可能なマッドの改善を行ってきたことに起因してい
る。すなわち、マッドの改善に伴いマッド強度があが
り、従来の出銑要求時にビット付ロッドによる開孔（錐
開孔作業）では作業時間がかかり、高炉操業に与える影
響も大なることから、マッド強度がまだ発現しない未焼
成時に金棒を使用して開孔するようになった訳である。
しかし事前開孔作業では、空気冷却だけではガイドチャ
ンネルに熱変形が生じて直線性を維持できないため、ド
リフターの力を十分に先端の削孔部に伝達できず開孔作
業時間の延長を引き起こすことになる。更には、熱変形
が残ることにより永久化し、出銑口開孔機の開孔位置へ
のセットが難しくなり、またそのための整備に時間がか
かるというデメリットが生じることから、新たな熱変形
防止策が望まれていた。本考案は、このような熱負荷の
高い開孔作業でもガイドチャンネルの熱変形を防止する
構造を有する高炉出銑口開孔機を提供することを目的と
するものである。[0004] The adoption of the pre-opening method has been attributable to the improvement of a mud capable of tapping for a long time with the aim of reducing the number of tappings which greatly contributes to the production cost of hot metal. In other words, the mud strength increases with the improvement of the mud, and it takes a long time to open the hole with a bit with a bit at the time of conventional tapping (drilling operation), and the influence on the blast furnace operation is increased. In other words, the hole is opened by using a metal rod when the firing is not performed yet.
However, in the pre-drilling operation, air cooling alone causes thermal deformation of the guide channel and cannot maintain the linearity, so the power of the drifter cannot be sufficiently transmitted to the drilled portion at the tip, causing the drilling time to be extended. become. Furthermore, the permanent deformation due to the remaining thermal deformation makes it difficult to set the tap hole drilling machine at the drilling position, and it takes time for maintenance. Was desired. An object of the present invention is to provide a blast furnace taphole drilling machine having a structure for preventing thermal deformation of a guide channel even in such a drilling operation with a high heat load.
【０００５】[0005]
【課題を解決するための手段】本考案は、高炉の出銑口
を開孔する出銑口開孔機において、冷却水を流通させる
中空室を開孔機のガイドチャンネルにそって、ガイドチ
ャンネルの後端部分から先端部分にかけて形成し、該中
空室への冷却水の導入部及び導出部をガイドチャンネル
後端部に設けた水冷式ガイドチャンネルを有することを
特徴とする高炉出銑口開孔機である。従来から高炉出銑
口周辺は高温溶融物と水との接触からの爆発の危険性か
ら、水の使用は避けることが多いが、本考案によれば、
ガイドチャンネルの後端部分に給排水のホースまたは配
管を接続すればよく、危険性はない。一般に、空気によ
る冷却では熱伝達率は数百ｋｃａｌ／ｍ２ｈであり、水
冷却では数千ｋｃａｌ／ｍ２ｈとなり、約１０倍の冷却
能力を有しており、水冷却の優位性は明らかである。水
冷却によりガイドチャンネルの熱変形が防止できるの
で、出銑口開孔機のセット、ドリフターの能力を十分生
かすことができ開孔作業時間の短縮につながる。これは
作業者の高熱環境下での労働負荷を減らすことである。SUMMARY OF THE INVENTION The present invention provides a tap hole drilling machine for drilling a tap hole of a blast furnace, in which cooling water is circulated.
Align the hollow chamber with the guide channel of the
Over the tip portion is formed from a rear end portion of Yan'neru, intermediate
Guide channel for the inlet and outlet of cooling water to the vacant room
A blast furnace taphole opening machine having a water-cooled guide channel provided at a rear end portion . Conventionally, the use of water is often avoided around the blast furnace tap hole due to the danger of explosion from contact between the hot melt and water, but according to the present invention,
It is sufficient to connect a water supply / drainage hose or pipe to the rear end of the guide channel, and there is no danger. Generally, in air cooling, the heat transfer coefficient is several hundred kcal / m 2 h, and in water cooling, it is several thousand kcal / m 2 h, which has about 10 times the cooling capacity. it is obvious. Since the water channel can prevent thermal deformation of the guide channel, the ability of the tap hole drilling machine set and the drifter can be fully utilized, leading to a reduction in drilling time. This is to reduce the work load of workers in high heat environment.
【０００６】[0006]
【実施例】本考案の実施例について説明する。図１は開
孔作業開始直前の本考案の高炉出銑口開孔機を示す。開
孔機のガイドチャンネル１は、ハッカー及び支持装置２
にて高炉出銑口３に相対してセットされる。ガイドチャ
ンネル１にはドリフター７及び金棒またはロッド・ビッ
ト９を懸垂し、７の打撃・回転及び送りにて充填された
マッド１０を炉内まで開孔するものである。事前開孔作
業の場合、大樋１１に残った溶銑滓８の熱でガイドチャ
ンネル１の下面が伸びる熱変形が生じる。このことによ
り、ハッカー２が炉体より離れたり、ドリフター７の力
が金棒９の先端にまっすぐ伝達されず、開孔作業に時間
を要することになる。本考案においてはこれを防止する
ために、冷却水導入部５と導出部６をガイドチャンネル
１の後端部分に設置し、冷却水をガイドチャンネル１の
後端から先端まで往復する中空室４内を流し、冷却して
熱変形をなくするものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described. FIG. 1 shows the blast furnace taphole opening machine of the present invention immediately before the start of the opening operation. The guide channel 1 of the drilling machine is a hacker and support device 2
At the blast furnace tap hole 3. In the guide channel 1, a drifter 7 and a metal rod or a rod / bit 9 are suspended, and the filled mud 10 is opened to the inside of the furnace by hitting, rotating, and feeding the 7. In the case of the pre-opening work, the heat of the molten iron slag 8 remaining in the gutter 11 causes thermal deformation in which the lower surface of the guide channel 1 extends. As a result, the hacker 2 is separated from the furnace body, and the force of the drifter 7 is not transmitted straight to the tip of the metal rod 9, so that a time is required for the hole opening operation. In the present invention, in order to prevent this, the cooling water inlet 5 and the outlet 6 are installed at the rear end of the guide channel 1 so that the cooling water is reciprocated from the rear end of the guide channel 1 to the front end. And cooling to eliminate thermal deformation.
【０００７】図２は中空室４と冷却水導入部５、冷却水
導出部６の形成例について、図１のＡ−Ａ′断面と先端
部分で示す。中空室１４は給水側（導入側）、１５は排
水側（導出側）を示す。ガイドチャンネル１にはドリフ
ターマウンチングベッド１２や駆動チェーン１３が付帯
するので、これら装置の動作の障害とならぬように、中
空室１４，１５を設置する。この実施例では、ガイドチ
ャンネルの下側外向きに設置し、先端部で連絡パイプ１
６で連結している。中空室は、ガイドチャンネル１の長
手方向に設置すればよく、その位置については他装置の
干渉がなければチャンネルの内側でもよい。後端部分か
ら給水し、先端部分で排水すること、またはその逆も可
能であるが、冷却水のホースまたは配管が後端部分から
先端部分まで必要となり、整備のうえで問題となること
や、冷却効率から劣ることになる。図３はガイドチャン
ネルの上下に冷却水導入側と導出側を離して中空室を設
置した例を示し、図４はガイドチャンネル側面全体に仕
切壁１７を介して導入側中空室１４と導出側中空室１５
を形成しさらに冷却を強化したものである。これら方式
の場合は、先端部での連絡パイプは必要なくなる。FIG. 2 shows an example of the formation of the hollow chamber 4, the cooling water introduction part 5, and the cooling water outlet part 6, taken along the line AA 'in FIG. The hollow chamber 14 indicates a water supply side (introduction side), and 15 indicates a drainage side (outlet side). Since the guide channel 1 is provided with a drifter mounting bed 12 and a drive chain 13, hollow chambers 14 and 15 are provided so as not to hinder the operation of these devices. In this embodiment, the guide channel is installed downward and outward, and the connecting pipe 1 is provided at the tip.
6 are connected. The hollow chamber may be installed in the longitudinal direction of the guide channel 1, and its position may be inside the channel if there is no interference from other devices. Water can be supplied from the rear end and drained at the front end, or vice versa.However, a hose or piping for cooling water is required from the rear end to the front end, which causes problems in maintenance, Inferior in cooling efficiency. FIG. 3 shows an example in which a hollow chamber is provided above and below a guide channel with a cooling water inlet side and an outlet side separated from each other, and FIG. 4 shows an inlet side hollow chamber 14 and an outlet side hollow through a partition wall 17 over the entire side surface of the guide channel. Room 15
And further enhanced cooling. In the case of these methods, the connecting pipe at the tip is not required.
【０００８】[0008]
【考案の効果】以上の如く本考案によれば、高炉出銑口
の事前開孔等高熱負荷の環境でもガイドチャンネルの熱
変形を防止でき、作業時間の短縮、労働負荷の軽減が可
能となる。[Effects of the Invention] As described above, according to the present invention, it is possible to prevent the guide channel from being thermally deformed even under a high heat load environment such as a pre-opening of a blast furnace taphole, thereby shortening the working time and the labor load. .
【図１】開孔作業開始直前の出銑口開孔機。FIG. 1 shows a taphole opening machine immediately before the start of an opening operation.
【図２】ガイドチャンネルにおける中空室の形成例を示
す説明図で、（Ａ）図は図１のＡ−Ａ′矢視断面相当断
面説明図、（Ｂ）図は、同図先端（後端）部における側
面説明図。FIGS. 2A and 2B are explanatory views showing an example of forming a hollow chamber in a guide channel. FIG. 2A is an explanatory sectional view taken along the line AA ′ of FIG. 1, and FIG. FIG.
【図３】他の中空室の形成例を示す断面説明図で（Ａ）
図は図１のＡ−Ａ′矢視断面相当断面説明図、（Ｂ）図
は同図先端（後端）部における側面説明図、FIG. 3 is an explanatory sectional view showing an example of forming another hollow chamber (A).
FIG. 1 is a cross-sectional explanatory view corresponding to a cross section taken along line AA ′ of FIG. 1, and FIG.
【図４】他の中空室の形成例を示す断面説明図で、
（Ａ）図は図１のＡ−Ａ′矢視断面説明図、（Ｂ）図は
同図先端（後端）部における側面説明図である。FIG. 4 is a sectional explanatory view showing another example of forming a hollow chamber;
(A) is a cross-sectional explanatory view taken along the line AA 'of FIG. 1, and (B) is a side explanatory view at the front end (rear end) of the same figure.
１ ガイドチャンネル ２ ハッカー及び支持装置 ３ 高炉出銑口 ４ 中空室 ５ 冷却水導入部 ６ 冷却水導出部 ７ ドリフター ８ 大樋内に残った溶銑滓 ９ 金棒又はロッド・ビット １０ マッド １１ 大樋 １２ ドリフターマウンチングベッド １３ 駆動チェーン １４ 中空室（給水） １５ 中空室（排水） １６ 先端部冷却水連絡パイプ １７ 仕切壁 DESCRIPTION OF SYMBOLS 1 Guide channel 2 Hacker and supporting device 3 Blast furnace tap hole 4 Hollow room 5 Cooling water introduction part 6 Cooling water outlet part 7 Drifter 8 Hot metal slag remaining in large gutter 9 Gold rod or rod bit 10 Mud 11 Large gutter 12 Drifter mounting Bed 13 Drive chain 14 Hollow chamber (water supply) 15 Hollow chamber (drainage) 16 Cooling water communication pipe at tip 17 Partition wall
───────────────────────────────────────────────────── フロントページの続き (72)考案者 米田 隆司 福岡県北九州市戸畑区大字中原46−59 新日本製鐵株式会社 機械・プラント事 業部内 (56)参考文献 特開 昭50−27703（ＪＰ，Ａ) 実開 昭53−122313（ＪＰ，Ｕ) 実開 昭58−140160（ＪＰ，Ｕ) 実公 昭58−48341（ＪＰ，Ｙ２) 実公 昭60−28658（ＪＰ，Ｙ２) 実公 昭54−32981（ＪＰ，Ｙ２) ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takashi Yoneda 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Machinery & Plant Business Department (56) References JP 50-27703 (JP) , A) Japanese Utility Model Showa 53-122313 (JP, U) Japanese Utility Model Showa 58-140160 (JP, U) Japanese Utility Model Sho 58-48341 (JP, Y2) Japanese Utility Model Showa 60-28658 (JP, Y2) Japanese Utility Model Sho 54-32981 (JP, Y2)
Claims (1)
おいて、冷却水を流通させる中空室を開孔機のガイドチ
ャンネルにそって、ガイドチャンネルの後端部分から先
端部分にかけて形成し、該中空室への冷却水の導入部及
び導出部をガイドチャンネル後端部に設けた水冷式ガイ
ドチャンネルを有することを特徴とする高炉出銑口開孔
機。1. A taphole opening hole machine for opening the taphole of the blast furnace, along a hollow chamber for circulating the cooling water to the guide channel of the perforator, over the distal portion from the rear end portion of the guide channel Forming a cooling water introduction part into the hollow chamber and
Blast furnace taphole opening machine and having a water-cooled guide channel having a fine lead portion into the guide channel rear end.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9590491U JP2535445Y2 (en) | 1991-10-28 | 1991-10-28 | Blast furnace taphole opening machine |
| EP92110142A EP0519397B1 (en) | 1991-06-17 | 1992-06-16 | Tap hole drilling machine |
| KR1019920010447A KR950001904B1 (en) | 1991-06-17 | 1992-06-16 | Tap hole drilling machine |
| ES92110142T ES2091979T3 (en) | 1991-06-17 | 1992-06-16 | MACHINE FOR DRILLING CAST HOLES. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9590491U JP2535445Y2 (en) | 1991-10-28 | 1991-10-28 | Blast furnace taphole opening machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0537946U JPH0537946U (en) | 1993-05-21 |
| JP2535445Y2 true JP2535445Y2 (en) | 1997-05-14 |
Family
ID=14150285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9590491U Expired - Lifetime JP2535445Y2 (en) | 1991-06-17 | 1991-10-28 | Blast furnace taphole opening machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2535445Y2 (en) |
-
1991
- 1991-10-28 JP JP9590491U patent/JP2535445Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0537946U (en) | 1993-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19961126 |
|
| EXPY | Cancellation because of completion of term |