JPH0979909A - Method for measuring temperature of hot molten material - Google Patents
Method for measuring temperature of hot molten materialInfo
- Publication number
- JPH0979909A JPH0979909A JP7233580A JP23358095A JPH0979909A JP H0979909 A JPH0979909 A JP H0979909A JP 7233580 A JP7233580 A JP 7233580A JP 23358095 A JP23358095 A JP 23358095A JP H0979909 A JPH0979909 A JP H0979909A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- guide tube
- measuring
- melt
- temperature melt
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、金属管で被覆さ
れた光ファイバ又は断熱材で被覆された金属管で更に被
覆された光ファイバを検出部とする放射温度計により、
溶融金属等の高温溶融体の温度を測定する方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation thermometer having an optical fiber coated with a metal tube or an optical fiber further coated with a metal tube coated with a heat insulating material as a detection part.
The present invention relates to a method for measuring the temperature of a high temperature molten material such as molten metal.
【０００２】[0002]
【従来の技術】製鉄産業やその他の精錬業或いは鋳造業
において、溶融状態の金属の温度を測定することは、精
錬効率の向上、製造コストの低減、品質保証などの面か
ら必要なことである。溶融金属の温度測定には、従来消
耗型の熱電対やセラミック保護管の中に挿入された熱電
対を、溶融金属に浸漬させる方法が用いられてきた。消
耗型の熱電対はプローブの耐久性が弱く、長時間の測定
が不能なため、測温１回毎に使い捨てとなっており、測
温の都度プローブを装着し取り外す必要がある。また保
護管式も耐久性に問題があり、計測時間が５０〜１００
時間程度しか持続できない。また、交換の際も、重量物
のハンドリングが必要となる。その為、これらの方法は
頻繁に測定する方法としては経済的にも実用的にも適さ
ない。2. Description of the Related Art In the steelmaking industry and other refining or casting industries, it is necessary to measure the temperature of molten metal in order to improve refining efficiency, reduce manufacturing costs, and guarantee quality. . For measuring the temperature of the molten metal, a method of immersing a consumable thermocouple or a thermocouple inserted in a ceramic protection tube into the molten metal has been used. Since the consumable thermocouple has poor probe durability and cannot measure for a long time, it is disposable after each temperature measurement, and it is necessary to attach and detach the probe each time temperature measurement is performed. Moreover, the protection tube type also has a problem in durability, and the measurement time is 50 to 100.
It can only last for about an hour. In addition, handling of heavy items is also required when exchanging. Therefore, these methods are not economically or practically suitable for frequent measurement.
【０００３】このような問題点を解決する技術として、
特開平６−５８８１６号公報には、断熱材で被覆された
金属管で更に被覆された光ファイバを検出部とする放射
温度計の検出部先端を溶融金属内に挿入し、光ファイバ
を導波する放射光を検出して温度を測定する方法が記載
されている。この方法においては、検出部における光フ
ァイバの先端部は溶鋼と同じ温度になって黒体条件が成
立し、溶鋼の放射率に依存しない正確な温度測定ができ
る。[0003] Techniques for solving such problems include:
Japanese Unexamined Patent Publication No. 6-58816 discloses a radiation thermometer in which the tip of a detection part of an optical thermometer having a detection part of an optical fiber further covered with a metal tube covered with a heat insulating material is inserted into a molten metal to guide the optical fiber. A method of measuring the temperature by detecting emitted radiant light is described. In this method, the tip of the optical fiber in the detection section has the same temperature as the molten steel and the black body condition is satisfied, and accurate temperature measurement independent of the emissivity of the molten steel can be performed.
【０００４】[0004]
【解決しようとする課題】しかしながら、検出部を溶融
金属等の高温溶融体内に浸漬させる場合には、以下のよ
うな理由により安定測定が困難であるという問題点があ
る。However, when the detector is immersed in a high temperature melt such as molten metal, there is a problem that stable measurement is difficult for the following reasons.
【０００５】１）検出部が高温溶融体の表面張力の影響
で曲がり、正しく浸漬が行えない。1) The detecting portion bends due to the influence of the surface tension of the high temperature molten material, so that proper dipping cannot be performed.
【０００６】２）検出部がドラム等に巻回されている場
合、検出部の巻き癖により検出部が斜めに挿入される。2) When the detector is wound around a drum or the like, the detector is inserted obliquely due to the curl of the detector.
【０００７】このような問題点を解決する技術として、
本出願人により特許出願特願平６−２４０７９号がなさ
れている。これは、ガイド管先端部を溶融金属に浸漬
し、検出部をこのガイド管を通して連続的に又は間欠的
に溶融金属内に送り込み、温度を測定するものである。As a technique for solving such a problem,
The present applicant has filed a patent application Japanese Patent Application No. 6-24079. In this method, the tip of the guide tube is immersed in the molten metal, and the detecting portion is continuously or intermittently fed into the molten metal through the guide tube to measure the temperature.
【０００８】しかし、このような光ファイバのガイド管
を高温溶融体に浸漬させながら測温する方式には次の問
題点がある。However, the method of measuring the temperature while immersing the optical fiber guide tube in the high temperature melt has the following problems.
【０００９】１）ガイド管を高温溶融体に浸漬させるた
めに、ガイド管先端部にコストの高い耐火物を使用しな
ければならない。また、耐火物は消耗するため、定期的
な交換が必要となる。1) In order to immerse the guide tube in the high temperature melt, a refractory material with high cost must be used at the tip of the guide tube. Further, since the refractory material is consumed, it needs to be replaced regularly.
【００１０】２）高温溶融体の種類により、液面上に酸
化防止を目的とした高温で粘性の高い空気遮断材を散布
する場合、ガイド管の周囲にその遮断材が付着してしま
う。2) When a high temperature and highly viscous air blocking material is sprayed on the liquid surface depending on the type of the high temperature melt, the blocking material adheres to the periphery of the guide tube.
【００１１】３）高温溶融体の表面層に浮遊するスラグ
の付着を防止できない。3) Adhesion of slag floating on the surface layer of the high temperature melt cannot be prevented.
【００１２】本発明は、このような問題点を解決するた
めになされたもので、金属管で被覆された光ファイバ又
は断熱材で被覆された金属管で更に被覆された光ファイ
バを検出部とする放射温度計により、長期にわたり安定
して高温溶融体の温度を測定する方法を提供することを
目的とする。The present invention has been made to solve the above problems, and an optical fiber coated with a metal tube or an optical fiber further coated with a metal tube coated with a heat insulating material is used as a detection unit. It is an object of the present invention to provide a method for stably measuring the temperature of a high temperature melt for a long period of time using a radiation thermometer.
【００１３】[0013]
【課題を解決するための手段】前記目的は、金属管で被
覆された光ファイバ又は断熱材で被覆された金属管で更
に被覆された光ファイバを検出部とする放射温度計によ
り高温溶融体の温度を測定する方法であって、測定する
高温溶融体の上部近傍に高温溶融体に浸漬しないように
ガイド管を配置し、このガイド管を通して前記検出部を
高温溶融体中へ送り込み、その後直ちに又は所定時間停
止させてその後、高温溶融体中から引き上げ、検出部が
高温溶融滞中に浸漬している間に測温を行うことを特徴
とする高温溶融体の温度測定方法により解決される。SUMMARY OF THE INVENTION The above-mentioned object is to detect a high temperature melt by a radiation thermometer having an optical fiber coated with a metal tube or an optical fiber further coated with a metal tube coated with a heat insulating material as a detection part. A method for measuring a temperature, wherein a guide tube is arranged in the vicinity of the upper portion of the high temperature melt to be measured so as not to be immersed in the high temperature melt, and the detection unit is fed into the high temperature melt through the guide tube, and immediately or thereafter. This is solved by a method for measuring the temperature of a high-temperature melt, which is characterized in that the temperature is stopped for a predetermined time, then pulled out from the high-temperature melt, and the temperature is measured while the detector is immersed in the high-temperature melt.
【００１４】検出部をガイド管を通して高温溶融体に浸
漬させるので、高温溶融体の表面張力によって検出部が
曲がることがない。また、ガイド管が高温溶融体に浸漬
されないため、先端部にコストの高い耐火物を使用する
必要がなく、また、ガイド管に高温溶融体・スラグ等が
付着して測定不能になることがない。Since the detector is immersed in the high temperature melt through the guide tube, the detector is not bent by the surface tension of the high temperature melt. In addition, since the guide tube is not immersed in the high-temperature melt, it is not necessary to use a costly refractory material at the tip, and the high-temperature melt, slag, etc. do not adhere to the guide tube and measurement becomes impossible. .
【００１５】図２に、検出部を高温溶融体中に送り込む
速度（挿入速度）と本発明（光ファイバ温度計）による
測温と熱電対による測温の温度差を示す。挿入速度が１
００〜６００ｍｍ／秒において、両者の差は３℃以下に
おさまっており、正確な測定ができていることがわか
る。装入速度がこの範囲を外れると、測定のばらつきが
大きくなり好ましくないが、精度を要しない場合は、こ
の範囲外でも使用することができる。FIG. 2 shows a speed (insertion speed) at which the detector is fed into the high temperature melt and a temperature difference between the temperature measurement by the present invention (optical fiber thermometer) and the temperature measurement by the thermocouple. Insertion speed is 1
At 00 to 600 mm / sec, the difference between the two is less than 3 ° C., which shows that accurate measurement is possible. If the charging speed is out of this range, the variation in measurement becomes large, which is not preferable, but when accuracy is not required, the charging speed can be used outside this range.
【００１６】少なくとも測定開始直前から測定終了後所
定時間が経過するまでの間、ガイド管に不活性ガスを吹
き込むことにより、高温溶融体表面に保温材等の浮遊物
がある場合にはこの浮遊物がパージされ、スムースに検
出部を高温溶融体中に送り込むことができる。また、測
定終了後は検出部の燃焼、酸化を防止し、検出部の消耗
を最低限に抑えることができる。At least immediately before the start of the measurement until a predetermined time elapses after the end of the measurement, by blowing an inert gas into the guide tube, if there is a suspended matter such as a heat insulating material on the surface of the high temperature molten material, this suspended matter is suspended. Is purged, and the detector can be smoothly fed into the high temperature melt. Further, after the measurement is completed, it is possible to prevent the detection section from burning and oxidizing and to minimize the consumption of the detection section.
【００１７】また、検出部を高温溶融体中から引き上げ
た後、検出部の先端をガイド管内で繰り返し上下させな
がら不活性ガスで冷却することにより、溶融した検出部
の断熱材がガイド管内壁に溶着することを防止できる。Further, after the detecting portion is pulled out from the high temperature melt, the tip of the detecting portion is repeatedly moved up and down in the guide tube and cooled by an inert gas, so that the heat insulating material of the molten detecting portion is applied to the inner wall of the guide tube. It is possible to prevent welding.
【００１８】検出部がドラムに巻かれて巻き癖がある場
合には、検出部をガイド管に挿入する前に検出部の巻き
癖の矯正を行うことにより、高温溶融体に対して垂直に
検出部を挿入することができる。When the detector is wound around a drum and has a curl, the curl of the detector is corrected before the detector is inserted into the guide tube to detect the curl perpendicularly to the high temperature melt. Parts can be inserted.
【００１９】また、ドラムに巻回された検出部を巻き戻
して使用する場合に、巻き戻された検出部を、ルーパを
介してガイド管内に送り込むことにより、検出部の送り
出し、引上げに伴って検出部が屈曲したり捩じれたりす
ることが防止できる。When the detector wound around the drum is rewound and used, the unwound detector is fed into the guide tube through the looper so that the detector is fed and pulled up. It is possible to prevent the detection unit from bending and twisting.
【００２０】[0020]
【発明の実施の形態】以下、本発明の実施の形態の例を
図１を用いて説明する。図１において、１は測温装置、
２は放射温度計本体、３は金属管で被覆された光ファイ
バ又は断熱材で被覆された金属管で更に被覆された光フ
ァイバよりなる放射温度計２の検出部、４は検出部３で
ある光ファイバを巻回する光ファイバドラム、５は信号
処理部、６は記録手段、７は表示手段、８はガイド管、
９はガイド管８のＮ2 パージ口、１０はピンチロール、
１１は矯正機、１２はルーパ、１３は溶鋼、１４は溶鋼
を収容するタンディッシュ、１５は溶鋼１３の表面に浮
遊する保温材である。DETAILED DESCRIPTION OF THE INVENTION An example of an embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1 is a temperature measuring device,
2 is a radiation thermometer main body, 3 is an optical fiber covered with a metal tube, or a detection part of the radiation thermometer 2 made of an optical fiber further covered with a metal tube covered with a heat insulating material, and 4 is a detection part 3. An optical fiber drum around which an optical fiber is wound, 5 is a signal processing unit, 6 is recording means, 7 is display means, 8 is a guide tube,
9 is the N 2 purge port of the guide tube 8, 10 is a pinch roll,
Reference numeral 11 is a straightener, 12 is a looper, 13 is molten steel, 14 is a tundish containing molten steel, and 15 is a heat insulating material floating on the surface of the molten steel 13.
【００２１】検出部３の断熱材は、ポリエチレン樹脂、
ポリイミド樹脂等により構成されている。The heat insulating material of the detecting portion 3 is polyethylene resin,
It is made of polyimide resin or the like.
【００２２】測温時には測温装置１を手動又は自動にて
タンディッシュ１４直上の測温位置に移動させる。検出
部３はガイド管８の中に収納されている。測定に先立
ち、検出部３の先端をガイド管８の先端より０〜３０ｍ
ｍ突出した状態にする。その後、ガイド管８をその先端
が溶鋼面から５０〜１３０ｍｍの高さになるように送り
込み、溶鋼面に垂直に維持して停止させる。次にピンチ
ロール１０を正転して検出部３を１００〜６００ｍｍ／
秒の送り込み速度で溶鋼内に浸漬させる。このときの浸
漬量は溶鋼面より０〜３００ｍｍ程度とし、また検出部
３溶鋼内停止時間即ち浸漬時間は０〜２秒とする。検出
部３の浸漬深さが浅ければ浅いほど検出部３の消耗が小
さくなるが、安定な温度指示が得られにくくなるので、
浸漬深さは安定な温度指示が得られる範囲でできるだけ
浅くする。しかし、３００ｍｍ以上にする必要はない。
同様に、浸漬時間が長くなれば長くなるほど検出部３の
消耗が大きくなるので、浸漬時間はできるだけ短い方が
よい。浸漬時間を２秒以上にすると、溶鋼１３中に浸漬
された検出部３の消耗量が大きくなるので好ましくな
い。During temperature measurement, the temperature measuring device 1 is manually or automatically moved to a temperature measuring position directly above the tundish 14. The detector 3 is housed in the guide tube 8. Prior to measurement, the tip of the detector 3 is 0 to 30 m from the tip of the guide tube 8.
Make it protruding. Thereafter, the guide tube 8 is fed so that its tip is at a height of 50 to 130 mm from the molten steel surface, and is stopped while being maintained perpendicular to the molten steel surface. Next, the pinch roll 10 is rotated in the forward direction to set the detection unit 3 to 100 to 600 mm /
Immersion in molten steel at a feeding speed of 2 seconds. At this time, the immersion amount is about 0 to 300 mm from the molten steel surface, and the detection unit 3 in-melt steel stop time, ie, the immersion time is 0 to 2 seconds. The shallower the immersion depth of the detection unit 3, the less the consumption of the detection unit 3, but the more difficult it is to obtain a stable temperature instruction.
The immersion depth should be as shallow as possible within the range where a stable temperature indication can be obtained. However, it is not necessary to set it to 300 mm or more.
Similarly, the longer the immersion time, the more the detector 3 is consumed. Therefore, the immersion time should be as short as possible. If the immersion time is set to 2 seconds or more, the amount of consumption of the detection unit 3 immersed in the molten steel 13 increases, which is not preferable.
【００２３】その後、一気に検出部３をピンチロール１
０を逆転させて引き上げ、ガイド管８内に再び収容す
る。このときの引き上げ速度は速ければ速い程良い。After that, the detection unit 3 is immediately changed to the pinch roll 1
0 is reversed and pulled up, and is housed in the guide tube 8 again. The higher the pulling speed at this time, the better.
【００２４】検出部３を溶鋼１３に送り込む直前から、
Ｎ2 パージ口９よりガイド管８内にＮ2 ガスを吹き込
む。このＮ2 ガスは、ガイド管８の先端より噴出し、保
温材１５を吹き飛ばすので、検出部３がスムースに溶鋼
１３中に浸漬される。このＮ2吹き込みは、測温が終了
し、検出部３の先端がガイド管８内に収容されてから所
定の時間続けられる。これにより、光ファイバ及び被覆
の燃焼防止と冷却が行なわれる。このとき、検出部３の
先端をガイド管８内でオシレーションすることにより、
溶融した検出部の断熱材がガイド管内壁に溶着すること
を防止できる。オシレーションの振幅は数ｍｍ〜数十ｍ
ｍとすることが好ましい。Immediately before sending the detector 3 to the molten steel 13,
Blowing N 2 gas into the guide tube 8 from the N 2 purge port 9. This N 2 gas is ejected from the tip of the guide tube 8 and blows off the heat insulating material 15, so that the detecting portion 3 is smoothly immersed in the molten steel 13. The N 2 blowing is continued for a predetermined time after the temperature measurement is completed and the tip of the detection unit 3 is housed in the guide tube 8. This prevents combustion and cooling of the optical fiber and the coating. At this time, by oscillating the tip of the detector 3 in the guide tube 8,
It is possible to prevent the melted heat insulating material of the detection unit from being welded to the inner wall of the guide tube. Oscillation amplitude is several mm to several tens of meters
m is preferable.
【００２５】検出部３は光ファイバドラム４に収納して
いるので、検出部６の巻き癖を矯正するため、矯正機１
１を使用している。Since the detector 3 is housed in the optical fiber drum 4, the straightener 1 is used to correct the curl of the detector 6.
1 is used.
【００２６】また、光ファイバドラム４と矯正機１１の
間に、ルーパ１２が設けられている。光ファイバドラム
４と矯正機１１の間にある検出部３は、ルーパ１２によ
りほぼ一定の張力で吊られているため、ピンチロール１
０により検出部の繰り出し、引上げを行っても、検出部
３が屈曲したり捩じれたりすることはない。また、ピン
チロール１０の動きと光ファイバドラム４の動きとを同
期させる必要がなくなる。実際には、光ファイバドラム
４からの検出部３の巻き戻しは、数回の測定に対して１
回行えばよい。A looper 12 is provided between the optical fiber drum 4 and the straightener 11. Since the detection unit 3 between the optical fiber drum 4 and the straightening machine 11 is suspended by the looper 12 with a substantially constant tension, the pinch roll 1
Even if the detecting unit is extended or pulled up by 0, the detecting unit 3 is not bent or twisted. Further, it is not necessary to synchronize the movement of the pinch roll 10 and the movement of the optical fiber drum 4. In reality, the rewinding of the detection unit 3 from the optical fiber drum 4 is 1 for several measurements.
Just go around.
【００２７】検出部３は、ガイド管８中に挿入されてい
るために、ほぼ垂直に溶鋼１３内に挿入される。このと
きの温度を放射温度計２で検出し、信号処理部５を介し
て記録手段６で記録し表示手段７で表示することによ
り、溶鋼１３の温度を測定することができる。Since the detector 3 is inserted in the guide tube 8, it is inserted almost vertically into the molten steel 13. The temperature of the molten steel 13 can be measured by detecting the temperature at this time with the radiation thermometer 2, recording it with the recording means 6 via the signal processing part 5, and displaying it with the display means 7.
【００２８】ガイド管８の先端部を耐火物でコーティン
グしておけば、高温溶融体の飛沫付着を防止することが
できる。If the tip portion of the guide tube 8 is coated with a refractory material, it is possible to prevent the high temperature molten material from adhering to the droplets.
【００２９】また、ガイド管８の先端部を分離可能で、
本体と簡単に着脱可能であるようにしておけば、消耗し
やすい先端部のみを交換することができる。The tip of the guide tube 8 can be separated,
If it can be easily attached to and detached from the main body, it is possible to replace only the tip portion, which is easily worn.
【００３０】尚、光ファイバの駆動方法は上記方法に限
らず、例えば、シリンダで駆動させる方法でも良い。The method of driving the optical fiber is not limited to the above method, but may be, for example, a cylinder driving method.
【００３１】図３に、検出部の送り込み速度を５００ｍ
ｍ／秒とし、溶鋼の温度を測定した結果を示す。図３に
おいて、横軸は消耗型熱電対で測定した溶鋼の温度、縦
軸は本発明を用いて測定した温度を示す。両者は良く一
致しており、両者の温度差の標準偏差σは１．０℃以内
である。なお、一回の測定での検出部の消耗量は４０ｍ
ｍ程度であった。In FIG. 3, the feeding speed of the detector is 500 m.
The result of measuring the temperature of the molten steel is shown as m / sec. In FIG. 3, the horizontal axis represents the temperature of molten steel measured by a consumable thermocouple, and the vertical axis represents the temperature measured using the present invention. Both match well, and the standard deviation σ of the temperature difference between both is within 1.0 ° C. In addition, the consumption of the detection unit in one measurement is 40m.
It was about m.
【００３２】[0032]
【発明の効果】本発明においては、光ファイバのガイド
管を溶融金属に浸漬しないように構成したので、ガイド
管が安価に製作でき且つ耐久性がある。また、短期間で
測定が終了するため光ファイバの１回当たりの消耗量が
少ないという効果を有する。According to the present invention, since the guide tube of the optical fiber is constructed so as not to be immersed in the molten metal, the guide tube can be manufactured at low cost and has durability. Further, since the measurement is completed in a short period of time, there is an effect that the consumption amount of the optical fiber per one time is small.
【図１】本発明を実施するための測温装置の構成の例を
示す図である。FIG. 1 is a diagram showing an example of the configuration of a temperature measuring device for carrying out the present invention.
【図２】検出部の送り込み速度と指示値の安定性の関係
を示す図である。FIG. 2 is a diagram showing a relationship between a feeding speed of a detection unit and stability of an instruction value.
【図３】本発明により測定した溶鋼の温度と、消耗型熱
電対により測定した溶鋼の温度との関係を示す図であ
る。FIG. 3 is a diagram showing the relationship between the temperature of molten steel measured by the present invention and the temperature of molten steel measured by a consumable thermocouple.
１ 測温装置 ２ 放射温度計本体 ３ 検出部 ４ 光ファイバドラム ５ 信号処理部 ６ 記録手段 ７ 表示手段 ８ ガイド管 ９ Ｎ2 パージ口 １０ ピンチロール １１ 矯正機 １２ ルーパ １３ 溶鋼 １４ タンディッシュ １５ 保温材1 Temperature Measuring Device 2 Radiation Thermometer Main Body 3 Detecting Section 4 Optical Fiber Drum 5 Signal Processing Section 6 Recording Means 7 Displaying Means 8 Guide Tube 9 N 2 Purging Port 10 Pinch Roll 11 Corrector 12 Looper 13 Molten Steel 14 Tundish 15 Heat Insulating Material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山下 元 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 宮原 弘明 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 山中 善吉 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Gen Yamashita Moto 1-2 Marunouchi, Chiyoda-ku, Tokyo Japan Steel Pipe Co., Ltd. (72) Hiroaki Miyahara 1-2 1-2 Marunouchi, Chiyoda-ku, Tokyo Date Inside the Steel Pipe Co., Ltd. (72) Inventor Zenkichi Yamanaka 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Inside Nihon Steel Pipe Co., Ltd.
Claims (6)
材で被覆された金属管で更に被覆された光ファイバを検
出部とする放射温度計により高温溶融体の温度を測定す
る方法であって、測定する高温溶融体の上部近傍に高温
溶融体に浸漬しないようにガイド管を配置し、このガイ
ド管を通して前記検出部を高温溶融体中へ送り込み、そ
の後直ちに又は所定時間停止させてその後、高温溶融体
中から引き上げ、検出部が高温溶融滞中に浸漬している
間に測温を行うことを特徴とする高温溶融体の温度測定
方法。1. A method for measuring the temperature of a high-temperature melt by a radiation thermometer having an optical fiber coated with a metal tube or an optical fiber further coated with a metal tube coated with a heat insulating material as a detection unit. , A guide tube is arranged in the vicinity of the upper part of the high-temperature melt to be measured so as not to be immersed in the high-temperature melt, and the detection unit is fed into the high-temperature melt through this guide tube, and immediately or after being stopped for a predetermined period of time, high temperature A method for measuring the temperature of a high-temperature melt, which comprises pulling up from the melt and measuring the temperature while the detection part is immersed in the high-temperature melt.
１００〜６００ｍｍ／秒とすることを特徴とする請求項
１に記載の高温溶融体の温度測定方法。2. The speed at which the detector is fed into the high temperature melt is
The method for measuring the temperature of a high temperature melt according to claim 1, wherein the temperature is set to 100 to 600 mm / sec.
所定時間が経過するまでの間、ガイド管に不活性ガスを
吹き込むことを特徴とする請求項１又は請求項２に記載
の高温溶融体の温度測定方法。3. The temperature of the high-temperature melt according to claim 1, wherein an inert gas is blown into the guide tube at least immediately before the start of measurement until a predetermined time elapses after the end of measurement. Measuring method.
後、検出部の先端をガイド管内で繰り返し上下させなが
ら冷却することを特徴とする請求項３に記載の高温溶融
体の温度測定方法。4. The method for measuring the temperature of a high temperature melt according to claim 3, wherein after the detection part is pulled out from the high temperature melt, the tip of the detection part is cooled while repeatedly moving up and down in the guide tube.
使用し、検出部をガイド管に挿入する前に、検出部の巻
き癖の矯正を行うことを特徴とする請求項１ないし請求
項４のうちいずれか１項に記載の高温溶融体の温度測定
方法。5. The detection part wound around a drum is used by being rewound, and the curl of the detection part is corrected before the detection part is inserted into the guide tube. Item 5. A method for measuring a temperature of a high temperature melt according to any one of Items 4.
使用し、巻き戻された検出部を、ルーパを介してガイド
管内に送り込むことを特徴とする請求項１ないし請求項
５のうちいずれか１項に記載の高温溶融体の温度測定方
法。6. The detection unit wound on a drum is used by being rewound, and the rewound detection unit is fed into the guide tube through a looper. The method for measuring the temperature of a high-temperature melt according to any one of items.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7233580A JPH0979909A (en) | 1995-09-12 | 1995-09-12 | Method for measuring temperature of hot molten material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7233580A JPH0979909A (en) | 1995-09-12 | 1995-09-12 | Method for measuring temperature of hot molten material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0979909A true JPH0979909A (en) | 1997-03-28 |
Family
ID=16957301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7233580A Pending JPH0979909A (en) | 1995-09-12 | 1995-09-12 | Method for measuring temperature of hot molten material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0979909A (en) |
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1995
- 1995-09-12 JP JP7233580A patent/JPH0979909A/en active Pending
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