JPH06317388A - Method and device to monitor temperature of outer wall of furnace - Google Patents
Method and device to monitor temperature of outer wall of furnaceInfo
- Publication number
- JPH06317388A JPH06317388A JP10542293A JP10542293A JPH06317388A JP H06317388 A JPH06317388 A JP H06317388A JP 10542293 A JP10542293 A JP 10542293A JP 10542293 A JP10542293 A JP 10542293A JP H06317388 A JPH06317388 A JP H06317388A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- wall
- monitoring
- furnace body
- upper limit
- 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.)
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、転炉等の炉体の外壁の
上限温度を監視するための炉体外壁温度監視方法とその
ための装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace outer wall temperature monitoring method and apparatus for monitoring the upper limit temperature of the outer wall of a furnace body such as a converter.
【０００２】[0002]
【従来の技術】製鋼に用いられる転炉の鉄皮５の内周面
には、図３に示すように、断熱のためにパーマ煉瓦６と
ウエア煉瓦７とがこの順に取り付けられている。また、
鉄皮５には、冷却装置（図示せず）が取り付けられてお
り、稼働中は常に冷却されている。しかし、煉瓦６，７
の局部磨耗や煉瓦６，７の隙間への地金の差し込み等が
生じたり、冷却装置に不具合が生じると、鉄皮５の温度
が上昇する。2. Description of the Related Art As shown in FIG. 3, a perm brick 6 and a wear brick 7 are attached in this order on the inner peripheral surface of a steel shell 5 of a converter used for steelmaking. Also,
A cooling device (not shown) is attached to the iron shell 5 and is constantly cooled during operation. But bricks 6,7
When the local wear of the steel, the insertion of metal into the gaps between the bricks 6 and 7, or the like occurs in the cooling device, the temperature of the iron shell 5 rises.
【０００３】通常、鉄皮の管理温度（上限温度）は、３
５０°Ｃから４５０°Ｃであり、この温度より上昇する
と、鉄皮の機械的強度が低下し、鉄皮の変形が加速され
ると共に、鉄皮の材質が劣化（靱性の低下）し、亀裂の
発生が促進される。従って、鉄皮の温度が上限温度を越
えると炉体の寿命が劣化する。また、図３からも分かる
ように煉瓦６，７が損傷すると鉄皮５が溶損し、溶損部
から洩鋼と呼ばれる重大事故が生じるおそれがある。こ
のため、鉄皮の温度を常に監視しなければならない。Usually, the management temperature (upper limit temperature) of the iron shell is 3
The temperature is from 50 ° C to 450 ° C. Above this temperature, the mechanical strength of the iron shell decreases, the deformation of the iron shell accelerates, and the material of the iron shell deteriorates (reduces toughness) and cracks. Is promoted. Therefore, when the temperature of the iron shell exceeds the upper limit temperature, the life of the furnace body deteriorates. Further, as can be seen from FIG. 3, when the bricks 6 and 7 are damaged, the iron shell 5 may be melted and a serious accident called leakage steel may occur from the melted portion. For this reason, the temperature of the iron skin must be constantly monitored.
【０００４】ところで、転炉の外壁の温度を測定する従
来技術として、実開平１−６５８４６号公報及び特開平
１−７３０１３号公報に開示されたものがある。前者の
公報に開示された温度測定装置は、図４に示すように、
転炉２０のトラニオンシャフト２１の回転継ぎ手寄りに
補償導線挿入口２２を設け、トラニオンリング２３の一
部に炉底方向に分岐させた保護管２４を設けて、トラニ
オンシャフト２１、トラニオンリング２３、保護管２４
を通して配線した補償導線２５と炉体２６に取り付けた
温度検出器２８の導線とを、炉底に設けたコネクタ２７
で接続したものである。By the way, as conventional techniques for measuring the temperature of the outer wall of a converter, there are those disclosed in Japanese Utility Model Laid-Open No. 1-65846 and Japanese Patent Laid-Open No. 1-73013. The temperature measuring device disclosed in the former publication, as shown in FIG.
A compensating lead wire insertion port 22 is provided near the rotary joint of the trunnion shaft 21 of the converter 20, and a protection tube 24 branched in the furnace bottom direction is provided in a part of the trunnion ring 23 to protect the trunnion shaft 21, the trunnion ring 23, Tube 24
The compensating lead wire 25 wired through and the lead wire of the temperature detector 28 attached to the furnace body 26 are connected to the connector 27 provided at the bottom of the furnace.
It was connected with.
【０００５】後者の公報に開示された炉体監視装置で
は、図５に示すように、炉体３０の下方に配置された１
対の赤外線カメラ３１、３２の受光面のうち一方がノズ
ル３３側の炉底からトラニオン３４までに向けられ、他
方がノズル３２と反対側の炉底からトラニオン３４まで
向けられている。各カメラ３１，３２の熱線検出部がケ
ーブルを介してコントロール室に設けられた画像処理装
置３５の入力部に接続されており、熱線量に応じた検出
信号が電気信号に変換されて画像処理装置３５に送られ
るようになっている。そして検出信号に基づいて画像処
理装置３５により炉体外面の温度分布の画像を形成し、
必要により記録装置３６に記録し、ＣＲＴ３７に出力す
る。In the furnace body monitoring apparatus disclosed in the latter publication, as shown in FIG.
One of the light receiving surfaces of the pair of infrared cameras 31, 32 is directed from the furnace bottom on the nozzle 33 side to the trunnion 34, and the other is directed from the furnace bottom on the side opposite to the nozzle 32 to the trunnion 34. The heat ray detection unit of each of the cameras 31 and 32 is connected to the input unit of the image processing device 35 provided in the control room via a cable, and the detection signal corresponding to the heat dose is converted into an electric signal, and the image processing device is converted. 35. Then, based on the detection signal, an image of the temperature distribution on the outer surface of the furnace body is formed by the image processing device 35,
If necessary, the data is recorded in the recording device 36 and output to the CRT 37.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前者の
従来技術では、トラニオンの内部空間の配線可能領域に
限界があるので、配線本数が限られる。従って温度検出
器の数が限定され、炉壁全体を十分に監視できず、局部
的な温度上昇に対応できない。また、温度検出器や配線
が多くなるとその不具合に対する保守が困難であり、ま
た、その配線工事も容易ではない。これらの問題点を解
消するためには、非接触で炉体外壁の温度を検出する必
要がある。However, in the former prior art, the number of wires is limited because there is a limit to the wirable area of the internal space of the trunnion. Therefore, the number of temperature detectors is limited, the entire furnace wall cannot be sufficiently monitored, and local temperature rise cannot be dealt with. Further, if the number of temperature detectors and the number of wirings increase, it is difficult to maintain the troubles, and the wiring work is not easy. In order to solve these problems, it is necessary to detect the temperature of the outer wall of the furnace body without contact.
【０００７】一方、後者の従来技術は、上述の問題点を
解消できるが、炉体の熱線を画像処理により検出してい
るので、装置の構成が複雑になり、温度監視に要する費
用が高くなる。ここに、本発明の目的は、炉体外壁の局
部的な温度上昇を安価に監視できる技術を開発すること
にある。On the other hand, the latter conventional technique can solve the above-mentioned problems, but since the heat rays of the furnace body are detected by image processing, the structure of the apparatus becomes complicated and the cost required for temperature monitoring becomes high. . An object of the present invention is to develop a technique capable of inexpensively monitoring a local temperature rise on the outer wall of the furnace body.
【０００８】[0008]
【課題を解決するための手段】本発明に係る炉体外壁温
度監視方法は、炉体外壁の上限温度を監視するための方
法であって、上限温度付近の融点を有する支持金属部材
を介して炉体外壁に監視片を付着させ、上限温度以上の
温度上昇を前記監視片の脱落により監視可能としたこと
を特徴とする。The method for monitoring the temperature of the outer wall of the furnace body according to the present invention is a method for monitoring the upper limit temperature of the outer wall of the furnace body through a supporting metal member having a melting point near the upper limit temperature. It is characterized in that a monitoring piece is attached to the outer wall of the furnace body, and a temperature rise above the upper limit temperature can be monitored by dropping the monitoring piece.
【０００９】本発明に係る炉体外壁温度監視装置は、炉
体外壁の上限温度を監視するための装置であって、上限
温度以上の温度上昇を監視するための監視片と、炉体外
壁に取り付けられ、上限温度付近の融点を有し、監視片
を炉体外壁に付着させるための支持金属部材とを備えた
ことを特徴とする。A furnace outer wall temperature monitoring apparatus according to the present invention is a device for monitoring an upper limit temperature of a furnace outer wall, and a monitoring piece for monitoring a temperature rise above the upper limit temperature and a furnace outer wall. It has a melting point near the upper limit temperature and is provided with a supporting metal member for attaching the monitoring piece to the outer wall of the furnace body.
【００１０】[0010]
【作用】本発明に係る炉体外壁温度監視方法では、炉体
外壁の温度が上限温度を越えると、監視片を支持してい
る支持金属部材が溶融して炉体外壁に付着した監視片が
脱落する。従って、監視片を炉体の温度要監視部分に付
着するだけで、炉体外壁の局部的な温度上昇を安価に監
視できる。In the method for monitoring the temperature of the outer wall of the furnace body according to the present invention, when the temperature of the outer wall of the furnace body exceeds the upper limit temperature, the support metal member supporting the monitoring piece melts and the monitoring piece adhered to the outer wall of the furnace body is detected. take off. Therefore, the local temperature rise of the outer wall of the furnace body can be monitored at low cost simply by attaching the monitoring piece to the temperature monitoring portion of the furnace body.
【００１１】本発明に係る炉体外壁温度監視装置では、
炉体外壁の温度が上限温度を越えると、支持金属部材が
溶融し、監視片が炉体外壁から脱落する。従って、でき
るだけ多数の監視片を炉体の温度要監視部分にきめ細か
く付着させておくことにより、炉体外壁の局部的な温度
上昇を安価に監視できる。In the furnace body outer wall temperature monitoring apparatus according to the present invention,
When the temperature of the outer wall of the furnace body exceeds the upper limit temperature, the supporting metal member melts and the monitoring piece falls off from the outer wall of the furnace body. Therefore, the local temperature rise of the outer wall of the furnace body can be monitored inexpensively by finely adhering as many monitoring pieces as possible to the temperature monitoring portion of the furnace body.
【００１２】[0012]
【実施例】以下、本発明のその実施例を示す図面に基づ
いて詳述する。図１は、本発明の一実施例を採用した転
炉の半栽断面図である。図において、転炉１は、壺状の
炉体２と、炉体２外壁中央に水平に配置されたトラニオ
ンリング３と、炉体２の上部外周に配置された防滓板４
とを有している。炉体２は、例えばＳＭＣ４００Ｎ等の
材質からなる鉄皮５と、鉄皮５の内部に構築されたパー
マ煉瓦６及びウエア煉瓦７とから構成されている。トラ
ニオンリング３には、径方向に突出する１対のトラニオ
ンシャフト８が設けられている。トラニオンシャフト８
は、図示しない傾動装置に支持されており、これにより
転炉１が傾動する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a half-sectioned view of a converter adopting an embodiment of the present invention. In the figure, a converter 1 comprises a vase-shaped furnace body 2, a trunnion ring 3 horizontally arranged in the center of the outer wall of the furnace body 2, and a slag plate 4 arranged on the outer periphery of the upper part of the furnace body 2.
And have. The furnace body 2 is composed of an iron shell 5 made of a material such as SMC400N, and a perm brick 6 and a wear brick 7 built inside the iron shell 5. The trunnion ring 3 is provided with a pair of trunnion shafts 8 protruding in the radial direction. Trunnion shaft 8
Are supported by a tilting device (not shown), which causes the converter 1 to tilt.
【００１３】鉄皮５外壁においてトラニオンリング３下
方の中間部及び下部には、図２（Ａ）に拡大して示すよ
うに、多数の温度監視部材１０が取り付けられている。
温度監視部材１０は、図２（Ｂ）に示すように、四角錐
状の金属部材からなる監視片１１と、鉄皮５外壁に溶接
されたベース部材１３と、監視片１１をベース部材１３
に付着させるための支持金属部材１２とを有している。
この支持金属部材１２は、融点が鉄皮５の管理温度付近
の金属製である。支持金属部材１２の材質としては、例
えば管理温度が３５０°Ｃの場合は鉛を用い、それより
低い温度の場合は鉛錫合金を用い、１７０°Ｃの場合は
錫を用いればよい。次に、上述の実施例の動作を説明す
る。On the outer wall of the iron shell 5, a large number of temperature monitoring members 10 are attached to an intermediate portion and a lower portion below the trunnion ring 3 as shown in an enlarged view in FIG. 2 (A).
As shown in FIG. 2B, the temperature monitoring member 10 includes a monitoring piece 11 made of a quadrangular pyramid-shaped metal member, a base member 13 welded to the outer wall of the iron shell 5, and the monitoring piece 11 being a base member 13.
And a supporting metal member 12 for adhering to.
The supporting metal member 12 is made of metal whose melting point is near the control temperature of the iron shell 5. As the material of the supporting metal member 12, for example, lead may be used when the control temperature is 350 ° C., lead-tin alloy may be used when the control temperature is lower than that, and tin may be used when the control temperature is 170 ° C. Next, the operation of the above embodiment will be described.
【００１４】転炉１に原料が投入され、傾動しつつ加熱
がなされると、原料が溶解し鋼が精錬される。この精錬
過程において、特に煉瓦の耐用期限末期にウエア煉瓦７
が薄くなった状態において、図３に示すように、局部的
な煉瓦６、７の損耗により例えば直径ほゞ５００ｍｍと
いう局所的領域において鉄皮５の温度が上昇すると、こ
の部分に取り付けられた温度監視部材１０の支持金属部
材１２が融点に達して監視片１１が鉄皮５の外壁から脱
落する。この監視片１１の脱落を目視にて確認すること
により、鉄皮５の温度上昇部分を安価に監視できる。When the raw material is put into the converter 1 and heated while tilting, the raw material is melted and the steel is refined. During this refining process, wear bricks 7
As shown in FIG. 3, when the temperature of the iron shell 5 rises in a local area with a diameter of about 500 mm due to local abrasion of the bricks 6 and 7, the temperature of the iron The supporting metal member 12 of the monitoring member 10 reaches the melting point, and the monitoring piece 11 falls off from the outer wall of the iron shell 5. By visually confirming the falling of the monitoring piece 11, the temperature rising portion of the iron shell 5 can be monitored at low cost.
【００１５】また、監視片１１が脱落した部分について
は、ウエア煉瓦７の補修を行う。さらにウエア煉瓦積み
替え時においてパーマ煉瓦６については、監視片１１の
脱落部分を重点的に補修する。なお、監視片１１の復旧
は、煉瓦補修時に行えばよい。The wear brick 7 is repaired at the portion where the monitoring piece 11 has fallen off. Further, when transposing the wear bricks, the perm bricks 6 are repaired with emphasis on the falling portions of the monitoring pieces 11. The monitoring piece 11 may be restored when the brick is repaired.
【００１６】このように、本発明によれば、監視片１１
を鉄皮５の外壁に取り付けるだけで簡単に鉄皮５外壁の
温度を監視できるので、検出点の密度を容易に高くで
き、外壁の温度を安価にきめ細かく監視できる。As described above, according to the present invention, the monitoring piece 11
Since it is possible to easily monitor the temperature of the outer wall of the iron shell 5 by simply attaching the to the outer wall of the iron shell 5, the density of detection points can be easily increased, and the temperature of the outer wall can be inexpensively and finely monitored.
【００１７】表１に従来技術との比較を示す。ここで従
来技術としては、熱電対を温度検出器として採用したも
のである。従来技術では、配線容量の限界により熱電対
をトラニオンより下方の外壁（総表面積３００ｍ2 ）に
３０個しか取り付けられなかった。また、３０点の熱電
対を配線するためには多大な労力を要した。Table 1 shows a comparison with the prior art. Here, as a conventional technique, a thermocouple is adopted as a temperature detector. In the prior art, only 30 thermocouples could be attached to the outer wall (total surface area 300 m 2 ) below the trunnion due to the limit of wiring capacity. Also, a great deal of labor was required to wire the 30-point thermocouple.
【００１８】一方、本発明では、監視片１１を支持金属
部材１２によりベース部材１３に付着し、ベース部材１
３を外壁に溶接するだけでよいので、検出点数を３００
点にでき、局部的な温度上昇にも対応できた。また、配
線工事が不要であり、保全も容易である。On the other hand, in the present invention, the monitoring piece 11 is attached to the base member 13 by the supporting metal member 12, and the base member 1
Since 3 need only be welded to the outer wall, the number of detection points is 300
It was possible to deal with the local temperature rise. In addition, no wiring work is required and maintenance is easy.
【００１９】[0019]
【表１】 [Table 1]
【００２０】なお、本実施例では、支持金属部材１２の
材質として鉛や錫を例示したが、管理温度が高い場合に
は、鉛合金や他の合金を用いてもよい。また、監視片１
１を支持金属部材１２によりベース部材１３に付着させ
たが、直接鉄皮５に付着させてもよい。In this embodiment, lead or tin is used as an example of the material of the supporting metal member 12, but a lead alloy or another alloy may be used when the control temperature is high. Also, monitoring piece 1
Although 1 was attached to the base member 13 by the supporting metal member 12, it may be attached directly to the iron shell 5.
【００２１】また、監視片１１の材質は前述の管理温度
に耐えるものであれば特に制限はなく、支持金属部材１
２との取り付け形態も制限なく、機械的に支持されてい
てもロウ付け等の手段で接合されていてもよい。The material of the monitoring piece 11 is not particularly limited as long as it can withstand the above-mentioned control temperature, and the supporting metal member 1
There is no limitation on the form of attachment with 2, and they may be mechanically supported or joined by means such as brazing.
【００２２】[0022]
【発明の効果】以上説明したように、本発明によれば、
監視片の脱落により容易に炉体外壁の温度上昇を監視で
きるので、監視片を監視領域に高密度で配置でき、きめ
細かく外壁の温度上昇を監視できる。このため、炉体外
壁の局部的な温度上昇を安価に監視できる。As described above, according to the present invention,
Since the temperature rise of the outer wall of the furnace body can be easily monitored by dropping the monitoring piece, the monitoring piece can be arranged in a high density in the monitoring area and the temperature rise of the outer wall can be monitored finely. Therefore, it is possible to inexpensively monitor the local temperature rise on the outer wall of the furnace body.
【図１】本発明の一実施例を採用した転炉の半栽断面図
である。FIG. 1 is a half-sectioned view of a converter adopting an embodiment of the present invention.
【図２】図２(A) は、図１のＡ部分の温度監視部材の拡
大側面図であり、図２(B) はそのうちの１つの温度監視
部材の詳細図である。FIG. 2 (A) is an enlarged side view of a temperature monitoring member in a portion A of FIG. 1, and FIG. 2 (B) is a detailed view of one of the temperature monitoring members.
【図３】煉瓦の損傷を説明する断面拡大図である。FIG. 3 is an enlarged cross-sectional view illustrating damage to a brick.
【図４】従来の温度測定装置の模式図である。FIG. 4 is a schematic diagram of a conventional temperature measuring device.
【図５】従来の炉体監視装置の模式図である。FIG. 5 is a schematic view of a conventional furnace body monitoring device.
【符号の説明】 １：転炉 ２：炉体 ５：鉄皮 １０：温度監視部材
１１：監視片 １２：支持金属部材[Explanation of Codes] 1: Converter 2: Furnace body 5: Iron shell 10: Temperature monitoring member
11: Monitoring piece 12: Support metal member
Claims (2)
体外壁温度監視方法であって、 前記上限温度付近の融点を有する支持金属部材を介して
前記炉体外壁に監視片を付着させ、前記上限温度以上の
温度上昇を前記監視片の脱落により監視可能としたこと
を特徴とする炉体外壁温度監視方法。1. A method for monitoring an outer wall temperature of a furnace body for monitoring an upper limit temperature of the outer wall of the furnace body, wherein a monitoring piece is attached to the outer wall of the furnace body via a supporting metal member having a melting point near the upper limit temperature. A method for monitoring the temperature of the outer wall of the furnace body, wherein the temperature rise above the upper limit temperature can be monitored by dropping the monitoring piece.
体外壁温度監視装置であって、 前記上限温度以上の温度上昇を監視するための監視片
と、 前記炉体外壁に取り付けられ、前記上限温度付近の融点
を有し、前記監視片を前記炉体外壁に付着させるための
支持金属部材と、を備えたことを特徴とする炉体外壁温
度監視装置。2. A furnace body outer wall temperature monitoring device for monitoring an upper limit temperature of a furnace body outer wall, comprising a monitoring piece for monitoring a temperature rise above the upper limit temperature, and attached to the furnace body outer wall, A furnace outer wall temperature monitoring device, comprising: a melting point near the upper limit temperature; and a supporting metal member for attaching the monitoring piece to the furnace outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10542293A JPH06317388A (en) | 1993-05-06 | 1993-05-06 | Method and device to monitor temperature of outer wall of furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10542293A JPH06317388A (en) | 1993-05-06 | 1993-05-06 | Method and device to monitor temperature of outer wall of furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06317388A true JPH06317388A (en) | 1994-11-15 |
Family
ID=14407167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10542293A Withdrawn JPH06317388A (en) | 1993-05-06 | 1993-05-06 | Method and device to monitor temperature of outer wall of furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06317388A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116499274A (en) * | 2023-06-27 | 2023-07-28 | 四川领先微晶玻璃有限公司 | Temperature measurement system used in industrial sintering furnace |
-
1993
- 1993-05-06 JP JP10542293A patent/JPH06317388A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116499274A (en) * | 2023-06-27 | 2023-07-28 | 四川领先微晶玻璃有限公司 | Temperature measurement system used in industrial sintering furnace |
| CN116499274B (en) * | 2023-06-27 | 2023-08-25 | 四川领先微晶玻璃有限公司 | Temperature measurement system used in industrial sintering furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000801 |