JPS6367505A - Sensor for wear quantity of refractory body - Google Patents
Sensor for wear quantity of refractory bodyInfo
- Publication number
- JPS6367505A JPS6367505A JP21363686A JP21363686A JPS6367505A JP S6367505 A JPS6367505 A JP S6367505A JP 21363686 A JP21363686 A JP 21363686A JP 21363686 A JP21363686 A JP 21363686A JP S6367505 A JPS6367505 A JP S6367505A
- Authority
- JP
- Japan
- Prior art keywords
- wear
- refractory
- refractory body
- parallel
- resistance elements
- 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
- 238000001514 detection method Methods 0.000 claims description 23
- 239000004020 conductor Substances 0.000 abstract description 4
- 230000000750 progressive effect Effects 0.000 abstract 2
- 238000005259 measurement Methods 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、耐火物で内張りされた高温容器における前記
耐火物の損耗量を検知するセンサーに関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sensor for detecting the amount of wear of a refractory in a high-temperature container lined with a refractory.
[従来の技術]
製鉄プロセスでは、高炉や転炉に代表される各種の高温
客器が使用されているーこれらの高温客器は、苛酷な条
件での使用に耐え得る様に、鉄皮等により形成される枠
体や箱体の内側に比較的厚い耐火物層を内張すすること
によフて構築されるものである。しかしながら前記耐火
物層は、長期間に亘って熱的及び/又は機械的刺激を繰
り返し受けており、徐々に脆化が進行して遂には脱落等
の損耗が発生することは避は難く、応急的な補修又は根
本的な改修を行なうことが必要になる。その為耐火物の
損耗状況(換言すれば残存状況)を正確に把握すること
は、安全操業を続行していくうえで不可欠の管理項目で
ある。[Conventional technology] In the steelmaking process, various high-temperature equipment such as blast furnaces and converters are used. It is constructed by lining the inside of the frame or box with a relatively thick refractory layer. However, the refractory layer is repeatedly subjected to thermal and/or mechanical stimulation over a long period of time, and it is inevitable that it will gradually become brittle and eventually suffer damage such as falling off. It will be necessary to carry out temporary repairs or fundamental renovations. Therefore, accurately understanding the state of wear and tear on refractories (in other words, their remaining state) is an essential management item in order to continue safe operations.
耐火物の損耗量を把握する方法については本出願人にお
いてかねてより研究開発を進めており、既に高精度検知
センサーを完成している(実公昭59−30399号)
、この検知センサーの完成によって、耐火物の損耗量を
かなりの高精度で把握できる様になった。The applicant has been researching and developing methods for determining the amount of wear on refractories for some time, and has already completed a high-precision detection sensor (Utility Model Publication No. 59-30399).
With the completion of this detection sensor, it has become possible to ascertain the amount of wear and tear on refractories with a fairly high degree of accuracy.
[発明が解決しようとする問題点コ
しかしながら、上述した技術においても解決すべき課題
が若干残されている。即ち、前記検知センサーは測定点
毎(該測定点がセンサーの長手方向に複数配置されてい
る)に感温点を有する夫々2木ずつの導電線が必要な構
成であり、従って測定点がn個であるときは2n木の電
気配線が必要となり、配線系統が′a雑になるという欠
点があった。その為センサー内に設定される測定点にも
限界があり、該検知センサーでは耐火物の損耗量を不連
続的にしか測定できないという欠陥があった。[Problems to be Solved by the Invention However, there are still some problems to be solved even with the above-mentioned technology. That is, the detection sensor has a configuration that requires two conductive wires each having a temperature-sensitive point at each measurement point (a plurality of measurement points are arranged in the longitudinal direction of the sensor), and therefore, the number of measurement points is n. When there are only 2n electrical wirings required, the wiring system becomes sloppy. Therefore, there is a limit to the measurement points that can be set within the sensor, and the detection sensor has the drawback that it can only measure the amount of wear on the refractory discontinuously.
本発明の目的は、上述した趣旨から明らかな様に、測定
点を増加しても配線系統が複雑にならないセンサー、即
ち比較的簡単な構成でありながら、従来品より連続的且
つ高精度に耐火物の損耗量を検知できるセンサーを提供
することにある。As is clear from the above-mentioned purpose, an object of the present invention is to provide a sensor that does not make the wiring system complicated even when the number of measurement points is increased. The purpose is to provide a sensor that can detect the amount of wear and tear on objects.
[問題点を解決する為の手段]
上記目的を達成し得た本発明とは、前記耐火物の損耗進
行方向に沿って配置される電気絶縁性長手部材内に一対
の導電線を長手方向に平行埋設し、該導電線を、複数の
電気抵抗素子を介して並列的に結線し、前記導電線に流
れる電流を測定する様に構成した点に要旨を有する耐火
物損耗量検知センサーである。[Means for Solving the Problems] The present invention, which has achieved the above object, is a method in which a pair of conductive wires are arranged in the longitudinal direction within an electrically insulating longitudinal member disposed along the direction of wear of the refractory. This refractory wear amount detection sensor is constructed in such a way that the conductive wires are buried in parallel and connected in parallel through a plurality of electrical resistance elements, and the current flowing through the conductive wires is measured.
[作用]
本発明は上述の如く構成されるが、要は電気抵抗素子を
並列結線しておくものであり、耐火物の損耗量に応じて
電気抵抗素子が順次溶断していったときの抵抗変化に対
応した電流変化量を検出することによって前記耐火物の
損耗量をより高精度に検知するものである。[Function] The present invention is constructed as described above, but the key point is that electrical resistance elements are connected in parallel, and the resistance when the electrical resistance elements are sequentially blown out according to the amount of wear on the refractory. By detecting the amount of current change corresponding to the change, the amount of wear on the refractory can be detected with higher accuracy.
図面を参照しつつ本発明の詳細な説明する。The present invention will be described in detail with reference to the drawings.
第1図は本発明の耐火物損耗量の検知センサー(以下単
に検知センサーと呼ぶ)の基本的構成を示す概略説明図
であり、第2図は該検知センサーの使用状況を示す水平
断面図である。本発明に係る検知センサー1においては
、第1図に示す様に、電気絶縁性長手部材(以下単に長
手部材と呼ぶ)2内に一対の導電線3a、3bが長手方
向(第1図における左右方向)に平行埋設され、該導電
線3a、3bには複数の電気抵抗素子R8゜R2・・・
Ri・・・Rn(総括的にはRとする)が先端部1aか
ら順次並列的に結線されている。そして前記導電線3a
、3bには電源6から電流が流され、この電流は電流計
7によって検出される構成とされる。この様な検知セン
サー1 (従って長手部材2)は、第2図に示す様に、
その先端部1aを高温容器の内側(第2図の左側)に臨
まして耐火物8の損耗進行方向(第2図における左右方
向)に沿って、高温容器の周方向又は底部に複数配置さ
れる。尚第2図中、参照符号10は鉄皮である。又前記
長手部材2の材質に関しては何ら限定されるものではな
いが、耐火物8と同一の材料(但し電気絶縁性材料に限
る)、或は耐火物の損耗に従って同様に損耗していく様
な材料であれば良い。FIG. 1 is a schematic explanatory diagram showing the basic configuration of a refractory wear amount detection sensor (hereinafter simply referred to as a detection sensor) of the present invention, and FIG. 2 is a horizontal sectional view showing the usage status of the detection sensor. be. In the detection sensor 1 according to the present invention, as shown in FIG. 1, a pair of conductive wires 3a and 3b are installed in an electrically insulating longitudinal member (hereinafter simply referred to as the longitudinal member) 2 in the longitudinal direction (left and right in FIG. 1). direction), and the conductive wires 3a, 3b are provided with a plurality of electrical resistance elements R8°R2...
Ri...Rn (generally referred to as R) are sequentially connected in parallel from the tip 1a. and the conductive wire 3a
, 3b from a power source 6, and this current is detected by an ammeter 7. Such a detection sensor 1 (therefore, the longitudinal member 2) is, as shown in FIG.
A plurality of refractories are arranged in the circumferential direction or at the bottom of the high-temperature container along the direction of wear and tear of the refractory 8 (left-right direction in FIG. 2) with the tip 1a facing the inside of the high-temperature container (left side in FIG. 2). . In FIG. 2, reference numeral 10 is an iron shell. The material of the longitudinal member 2 is not limited in any way, but it may be the same material as the refractory 8 (limited to electrically insulating materials) or a material that wears out in the same way as the refractory wears. Any material is fine.
第1図及び第2図に示した構成において、耐火物の損耗
が進行するにつれて前記長手部材2も該損耗進行方向に
沿って損耗していくことになる。In the configuration shown in FIGS. 1 and 2, as the refractory wear progresses, the longitudinal member 2 also wears out along the wear progressing direction.
そうすると長手部材2内に複数埋設された電気抵抗素子
Rは、先端部1a側から順次溶断していく。Then, a plurality of electric resistance elements R embedded in the longitudinal member 2 are sequentially fused from the tip end 1a side.
二二で電気抵抗素子Rによる全抵抗R0は、全ての電気
抵抗素子Rが健在であるとぎは下記(11式で表わされ
る。In 22, the total resistance R0 due to the electric resistance elements R is expressed by the following (Equation 11) when all the electric resistance elements R are in good condition.
従って電気抵抗素子Rが前記長手部材2の先端部1a側
から順次(R1−*R2−eRn)溶断(センサー耐火
物の溶損によって炉内に露出し高熱の影響によって溶断
)していくと、その進行につれ検知センサー1内の全抵
抗R8は次第に大きくなっていく。そして電源6に一定
電圧■oを印加しておき、全抵抗R0の増大に対応して
小さくなる電流Io (Io =Vo /Ro )を
電流計7によって測定すれば、長手部材2の損耗量(従
って耐火物8の損耗量)を検知することができる。Therefore, when the electrical resistance element R is sequentially (R1-*R2-eRn) from the tip 1a side of the longitudinal member 2 (exposed in the furnace due to melting of the sensor refractory and fused due to the influence of high heat), As this progresses, the total resistance R8 within the detection sensor 1 gradually increases. Then, by applying a constant voltage o to the power source 6 and measuring the current Io (Io = Vo /Ro), which decreases in response to the increase in the total resistance R0, using the ammeter 7, the wear amount of the longitudinal member 2 ( Therefore, the amount of wear and tear on the refractory 8 can be detected.
尚本発明の検知センサー1において、電気抵抗素子Rの
数及び配置間隔については何ら限定するものではなく、
使用状況に応じて適宜設定すればよい。又抵抗値は必要
により個々に変化させることができる。いずれにしても
本発明の検知センサー1においては、電気抵抗素子Rの
個数に関係なく導電線3a、3bは2木で良く、より簡
単な電気回路であり、且つ任意に多くの検出点を設定す
ることができ、より連続的に耐火物の損耗量を検出する
ことができる。In the detection sensor 1 of the present invention, there are no limitations on the number and arrangement interval of the electrical resistance elements R;
It may be set as appropriate depending on the usage situation. Further, the resistance values can be changed individually as necessary. In any case, in the detection sensor 1 of the present invention, two conductive wires 3a and 3b are sufficient regardless of the number of electrical resistance elements R, resulting in a simpler electrical circuit, and an arbitrary number of detection points can be set. Therefore, the amount of wear on the refractory can be detected more continuously.
本発明に係る検知センサー1では、上述した構成から明
らかである様に、長手部材2の損耗が進行するにつれて
前記導電線3a、3bは先端面側(高温容器の内側)か
ら順次露出していくことになる。この段階で導電線3a
、3bがもし溶断されずに健全であったとすると、前記
先端面側に良電導電物質(例えば転炉における鋼浴等)
が存在する場合には導電線3a、3bが先端部1a側で
短絡してしまい、検知センサー1の本来の機能が達成し
得なくなることも考えられる。この様な懸念がある場合
には、導電線3a、3bに低融点物質を使用し、高温と
なる先端面近傍で電気抵抗素子Rと共に導電線3a、3
bが溶断するようにしておけば導電線3a、3bと前記
良電性物の短絡を回避することができる。この様な場合
に導電線3a、3bに使用される低融点物質としては、
例えばPb−3n合金を挙げることができる。尚転炉吹
きノズル内に本発明の検知センサー1を設置する場合に
は、底吹きガスによフてノズル先端部は鋼浴と遮断され
た状態となるので、短絡の問題は生じない。In the detection sensor 1 according to the present invention, as is clear from the above-described configuration, as the wear of the longitudinal member 2 progresses, the conductive wires 3a and 3b are sequentially exposed from the tip side (inside the high temperature container). It turns out. At this stage, conductive wire 3a
, 3b is sound without being fused, there is a good conductive material (for example, a steel bath in a converter) on the tip side.
If this exists, it is conceivable that the conductive wires 3a and 3b will be short-circuited on the tip portion 1a side, making it impossible for the detection sensor 1 to achieve its original function. If there is such a concern, use a low melting point substance for the conductive wires 3a, 3b, and connect the conductive wires 3a, 3 together with the electrical resistance element R near the tip surface where the temperature is high.
If b is made to fuse, it is possible to avoid a short circuit between the conductive wires 3a, 3b and the conductive material. In such cases, the low melting point substances used for the conductive wires 3a and 3b include:
For example, Pb-3n alloy can be mentioned. When the detection sensor 1 of the present invention is installed in a converter blowing nozzle, the tip of the nozzle is cut off from the steel bath by the bottom blowing gas, so the problem of short circuit does not occur.
[実施例]
電気抵抗素子R(R1、R2、−Ri ・・・Rn )
として、電気抵抗100Ωのものを10個等間隔(10
cm間隔)埋設した検知センサー1を準備し、該検知セ
ンサー1を転炉底吹きノズル(Arガス底吹き)内に装
着し、導電線3a、3b間に50Vの電圧を印加し、電
流工。の値における経時変化を調査した6面長手部材2
の先端部1aから電気抵抗素子R1までの距離について
も10cmとした。[Example] Electric resistance element R (R1, R2, -Ri...Rn)
, 10 pieces with electrical resistance of 100Ω are placed at equal intervals (10
A buried detection sensor 1 (cm interval) is prepared, the detection sensor 1 is installed in a converter bottom blowing nozzle (Ar gas bottom blowing), a voltage of 50 V is applied between the conductive wires 3a and 3b, and electric current is applied. Six-sided longitudinal member 2 investigated for changes over time in the value of
The distance from the tip 1a to the electrical resistance element R1 was also set to 10 cm.
炉寿命と電流I0との関係を第3図に示す。FIG. 3 shows the relationship between furnace life and current I0.
第3図に示す様に、電流I0は階段状に変化していくの
であるが、これは電流I0が急変する箇所に該当する電
気抵抗素子Rの位置まで耐火物の損耗が進行しているこ
とを示している。このときの炉寿命と耐火物損耗量との
関係を第4図に示す。As shown in Figure 3, the current I0 changes in a step-like manner, which means that the wear and tear of the refractory has progressed to the position of the electrical resistance element R that corresponds to the point where the current I0 suddenly changes. It shows. Figure 4 shows the relationship between the furnace life and the amount of refractory wear at this time.
尚第4図中のx印は、従来技術のレーザ光線反射法によ
って測定した場合の耐火物損耗量を示している。Note that the x mark in FIG. 4 indicates the amount of refractory wear measured by the conventional laser beam reflection method.
[発明の効果コ
以上述べた様に本発明は比較的簡単な構成に改善される
と共に、耐火物の損耗量をより連続的に且つ高精度に測
定することが可能となった。[Effects of the Invention] As described above, the present invention has been improved to have a relatively simple structure, and it has become possible to measure the amount of wear on refractories more continuously and with high precision.
第1図は本発明の検知センサー1の基本的構成を示す概
略説明図、第2図は検知センサー1の使用状況を示す水
平断面図、第3図は炉寿命と電流I0との関係を示すグ
ラフ、第4図は炉寿命と耐火物損耗量との関係を示すグ
ラフである。
1・・・検知センサー 2・・・長手部材3a、3b
・・・導電線 6・・・電源7・・・電流計
8・・・耐火物+n、、、a化 由Fig. 1 is a schematic explanatory diagram showing the basic configuration of the detection sensor 1 of the present invention, Fig. 2 is a horizontal sectional view showing the usage status of the detection sensor 1, and Fig. 3 shows the relationship between furnace life and current I0. The graph, FIG. 4, is a graph showing the relationship between furnace life and amount of refractory wear. 1...Detection sensor 2...Longitudinal members 3a, 3b
...Conducting wire 6...Power source 7...Ammeter
8... Refractory + n,,, a reason
Claims (1)
耗量を検知するセンサーであって、前記耐火物の損耗進
行方向に沿って配置される電気絶縁性長手部材内に一対
の導電線を長手方向に平行埋設し、該導電線を、複数の
電気抵抗素子を介して並列的に結線し、前記導電線に流
れる電流を測定する様に構成したことを特徴とする耐火
物損耗量検知センサー。A sensor for detecting the amount of wear on the refractory in a high-temperature container lined with a refractory, the sensor comprising a pair of conductive wires installed in an electrically insulating longitudinal member disposed along the direction in which the refractory wear progresses. A refractory wear detection sensor characterized in that the conductive wires are buried in parallel to each other, the conductive wires are connected in parallel through a plurality of electrical resistance elements, and the current flowing through the conductive wires is measured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21363686A JPS6367505A (en) | 1986-09-10 | 1986-09-10 | Sensor for wear quantity of refractory body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21363686A JPS6367505A (en) | 1986-09-10 | 1986-09-10 | Sensor for wear quantity of refractory body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6367505A true JPS6367505A (en) | 1988-03-26 |
Family
ID=16642432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21363686A Pending JPS6367505A (en) | 1986-09-10 | 1986-09-10 | Sensor for wear quantity of refractory body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6367505A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02225997A (en) * | 1989-02-27 | 1990-09-07 | Toyota Motor Corp | Detecting method for crack in lining of furnace |
JPH02225998A (en) * | 1989-02-27 | 1990-09-07 | Toyota Motor Corp | Detecting method for crack in lining of furnace |
-
1986
- 1986-09-10 JP JP21363686A patent/JPS6367505A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02225997A (en) * | 1989-02-27 | 1990-09-07 | Toyota Motor Corp | Detecting method for crack in lining of furnace |
JPH02225998A (en) * | 1989-02-27 | 1990-09-07 | Toyota Motor Corp | Detecting method for crack in lining of furnace |
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