JPS637347B2 - - Google Patents
Info
- Publication number
- JPS637347B2 JPS637347B2 JP54025785A JP2578579A JPS637347B2 JP S637347 B2 JPS637347 B2 JP S637347B2 JP 54025785 A JP54025785 A JP 54025785A JP 2578579 A JP2578579 A JP 2578579A JP S637347 B2 JPS637347 B2 JP S637347B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- tube
- valve
- gas
- probe
- 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
Links
- 239000000523 sample Substances 0.000 claims description 58
- 239000002184 metal Substances 0.000 claims description 50
- 229910052751 metal Inorganic materials 0.000 claims description 50
- 239000007789 gas Substances 0.000 claims description 37
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 239000004215 Carbon black (E152) Substances 0.000 claims description 12
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 12
- 229910001882 dioxygen Inorganic materials 0.000 claims description 12
- 229930195733 hydrocarbon Natural products 0.000 claims description 12
- 150000002430 hydrocarbons Chemical class 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009529 body temperature measurement Methods 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/12—Dippers; Dredgers
- G01N1/125—Dippers; Dredgers adapted for sampling molten metals
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Description
【発明の詳細な説明】
本発明は、金属精錬炉内の溶融金属の測温およ
び／または試料採取のために使用するプローブを
挿入するための装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for inserting a probe used for temperature measurement and/or sampling of molten metal in a metal smelting furnace.
炉内の溶融金属の測温および／または試料採取
に用いられる従来からの転炉のサブランス設備に
は、次のような問題点がある。(1)サブランスは転
炉の上方に設けられている長尺物であるので、転
炉上方の建屋が高くなる。(2)転炉上方の炉口フー
ドを貫通して炉内に降下されたサブランスに地金
やスラグが大量に付着した場合、サブランスを上
昇させる時に炉口フードから抜けなくなることが
ある。そのため転炉運転を休止する必要が生じる
とともに、サブランスに付着した地金やスラグを
除去するため非常に困難な作業が要求される。(3)
サブランスは、操業中の転炉の鉛直炉軸上にある
メインランスを避けてその炉軸からずれた位置で
転炉内に挿入されるので、サブランスは炉中心側
と炉壁側とで異なる熱負荷を受ける。その熱負荷
の相違によつてサブランスは変形し、一般的にサ
ブランスは炉中心側に曲げられる。 Conventional converter sublance equipment used for temperature measurement and/or sampling of molten metal within the furnace has the following problems. (1) Since the sublance is a long item installed above the converter, the building above the converter becomes taller. (2) If a large amount of metal or slag adheres to the sublance that has penetrated the furnace hood above the converter and been lowered into the furnace, it may become impossible to remove it from the furnace hood when the sublance is raised. Therefore, it becomes necessary to suspend converter operation, and extremely difficult work is required to remove the base metal and slag that have adhered to the sublance. (3)
The sub-lance is inserted into the converter at a position offset from the vertical furnace axis of the converter during operation, avoiding the main lance, which is on the vertical furnace axis. Under load. The difference in heat load causes the sublance to deform, and generally the sublance is bent toward the center of the furnace.
本発明は、上述の技術的問題点を解決すること
を目的とする。 The present invention aims to solve the above-mentioned technical problems.
以下、図面によつて本発明の実施例を説明す
る。第１図は本発明の基礎となる構成を示す断面
図である。金属精錬炉たとえば転炉１の炉底１ａ
には、下方に延びる挿入口２が設けられる。転炉
１内の溶融金属の測温および試料採取のためのプ
ローブ３は、押込装置４によつて挿入口２から転
炉１内に挿入される。また挿入口２から転炉１内
の溶融金属が流出するのを防いでシールをするた
めに、挿入口２には後述のごとくガスが導かれ
る。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the basic structure of the present invention. Metal refining furnace, for example, the hearth bottom 1a of the converter 1
is provided with an insertion port 2 extending downward. A probe 3 for measuring the temperature of molten metal in the converter 1 and collecting samples is inserted into the converter 1 through an insertion port 2 by a pushing device 4 . Further, in order to prevent the molten metal in the converter 1 from flowing out through the insertion port 2 and to provide a seal, gas is introduced into the insertion port 2 as described later.
挿入口２は、炉底１ａに形成された羽口１０に
連通しその羽口から転炉１の下方に一直線状に延
びる筒体５と、開閉弁６と、可撓管７とがこの順
に一体的に連結されて成る。筒体５の一端部は炉
底１ａにフランジ接合される。筒体５の他端部に
固着された開閉弁６は、たとえば仕切弁のごとく
で、開弁状態において筒体５と通路が一直線状に
連通し、プローブ３の転炉１内への挿脱を許容す
る構造を有する。筒体５には半径方向外方に突出
したガス導入管１１が固着される。ガス導入管１
１は、転炉１のトラニオン軸（図示せず）に形成
されたガス流路を経てガス供給源（図示せず）に
接続される。筒体５には、溶融金属が炉内から流
出することを防いでシールするためのガスが、転
炉１の操業時においてガス供給源から常時噴入さ
れる。可撓管７の下端部には、外鍔１２ａと外鍔
１２ａの周縁部から軸線に沿つて下方に延びる筒
部１２ｂとから成るソケツト１２が固着される。
挿入口２は、プローブ３を溶融金属内の適切な位
置（たとえばメインフランスが挿入される転炉１
の炉軸付近）にまで挿入しうるように、鉛直線と
角度α（α＝０であつてもよい）を成して傾斜し
て取付けられている。 The insertion port 2 communicates with a tuyere 10 formed in the hearth bottom 1a, and a cylindrical body 5, an on-off valve 6, and a flexible tube 7, which extend in a straight line from the tuyere to the bottom of the converter 1, are connected in this order. It is integrally connected. One end of the cylinder 5 is flanged to the hearth bottom 1a. The on-off valve 6 fixed to the other end of the cylindrical body 5 is, for example, a gate valve, and when the valve is open, the cylindrical body 5 and the passage communicate in a straight line, allowing the probe 3 to be inserted into and removed from the converter 1. It has a structure that allows for A gas introduction pipe 11 that protrudes radially outward is fixed to the cylindrical body 5 . Gas introduction pipe 1
1 is connected to a gas supply source (not shown) through a gas passage formed in a trunnion shaft (not shown) of the converter 1. Gas for sealing and preventing molten metal from flowing out of the furnace is constantly injected into the cylinder 5 from a gas supply source when the converter 1 is in operation. A socket 12 consisting of an outer collar 12a and a cylindrical portion 12b extending downward along the axis from the peripheral edge of the outer collar 12a is fixed to the lower end of the flexible tube 7.
The insertion port 2 allows the probe 3 to be inserted into the molten metal at a suitable position (e.g. in the converter 1 where the main French is inserted).
It is installed at an angle α (α may be 0) with respect to the vertical line so that it can be inserted up to the furnace axis (near the axis of the furnace).
押込装置４は、複動片ロツド形の押込用シリン
ダ１４と、押込用シリンダ１４のピストン棒１５
側で押込用シリンダ１４に軸線を合せて固着され
た案内筒１６とを含む。案内筒１６の押込用シリ
ンダ１４と反対側の上端部には、外鍔１７が固着
される。案内筒１６の外鍔１７をソケツト１２に
嵌合することによつて、案内筒１６と可撓管７し
たがつて開閉弁６および筒体５とを、その軸線が
ほぼ一直線になるようにして着脱自在に連結する
ことができる。開閉弁６および筒体５と案内筒１
６との軸線の多少のずれは、可撓管７が撓むこと
によつて許容される。 The pushing device 4 includes a double acting, single rod type pushing cylinder 14 and a piston rod 15 of the pushing cylinder 14.
It includes a guide cylinder 16 fixedly aligned with the pushing cylinder 14 on the side thereof. An outer flange 17 is fixed to the upper end of the guide tube 16 on the side opposite to the pushing cylinder 14 . By fitting the outer flange 17 of the guide tube 16 into the socket 12, the axes of the guide tube 16, the flexible tube 7, and therefore the on-off valve 6 and the cylinder body 5 are aligned almost in a straight line. It can be connected detachably. Opening/closing valve 6, cylinder body 5, and guide cylinder 1
A slight deviation of the axis from the flexible tube 7 is allowed by the bending of the flexible tube 7.
第２図はプローブ３の拡大縦断面である。試料
採取室２０を備える試料採取容器１９は、多重積
層紙から成る保護筒１８によつて一体的に外囲さ
れる。試料採取室２０の上部に連通した試料流入
孔２１が、保護筒１８の側壁１８ａおよび試料採
取容器１９の側壁１９ａを貫通して形成される。
この試料流入孔２１の軸線とプローブ３の軸線と
の成す角度βは、溶融金属が流入しやすくかつ試
料採取室２０内の空気が抜けやすいような角度に
選ばれており、試料流入孔２１は上向きに開口さ
れている。 FIG. 2 is an enlarged longitudinal section of the probe 3. The sample collection container 19 with the sample collection chamber 20 is integrally surrounded by a protective tube 18 made of multiple laminated paper. A sample inflow hole 21 communicating with the upper part of the sample collection chamber 20 is formed to penetrate the side wall 18a of the protection tube 18 and the side wall 19a of the sample collection container 19.
The angle β between the axis of the sample inflow hole 21 and the axis of the probe 3 is selected so that the molten metal can easily flow in and the air in the sample collection chamber 20 can easily escape. It is opened upward.
保護筒１８の上端部１８ｃには、熱電対２４が
埋込まれた測温体２５が固着される。熱電対２４
のリード線２４ａは、試料採取容器１９の側壁１
９ａを経て保護筒１８の下端部１８ｂから外方に
引出される。試料採取室２０の下部１９ｂには、
熱電対２６が埋込まれた測温体２７が固着され
る。熱電対２６のリード線２６ａは、保護筒１８
の下端部１８ｂから外方に引出される。 A temperature sensing element 25 in which a thermocouple 24 is embedded is fixed to the upper end 18c of the protection tube 18. thermocouple 24
The lead wire 24a is connected to the side wall 1 of the sample collection container 19.
9a and is pulled out from the lower end 18b of the protection tube 18. In the lower part 19b of the sample collection chamber 20,
A temperature measuring body 27 in which a thermocouple 26 is embedded is fixed. The lead wire 26a of the thermocouple 26 is connected to the protective tube 18.
is pulled outward from the lower end 18b.
保護筒１８の試料流入孔２１よりも下方の外壁
には、保護筒１８の半径方向外方に突出した環状
突起２２が周方向全周にわたつて形成される。こ
の環状突起２２は、挿入口２から噴入されプロー
ブ３の外壁に沿つて上昇してくる溶融金属流出防
止用ガスをプローブ３の周囲に拡散させる。これ
は、ガスの上昇により、溶融金属が試料流入孔２
１から流入するのを妨げられないようにするため
である。それとともに、保護筒３の上部に固着さ
れた測温体２５によつて、炉内溶融金属のガスに
影響されない正確な温度を測定することができ
る。しかも環状突起２２の上側の面２２ａは、保
護筒１８の外壁から滑らかに隆起しているので、
プローブ３を転炉１内の溶融金属中から引抜くと
きに、環状突起２２の上面２２ａに溶融金属が固
化付着することは少ない。保護筒１８の下端部１
８ｂには、押込装置４のピストン棒１５の上端部
１５ａが嵌入連結される嵌合穴２３が形成され
る。 An annular protrusion 22 that protrudes radially outward of the protection tube 18 is formed on the outer wall of the protection tube 18 below the sample inflow hole 21 over the entire circumference. The annular protrusion 22 diffuses the molten metal outflow prevention gas, which is injected from the insertion port 2 and rises along the outer wall of the probe 3, around the probe 3. This is because the rising gas causes the molten metal to flow into the sample inlet hole 2.
This is to ensure that the flow from 1 is not obstructed. At the same time, the temperature measuring element 25 fixed to the upper part of the protective tube 3 makes it possible to accurately measure the temperature which is not affected by the gas of the molten metal in the furnace. Moreover, since the upper surface 22a of the annular projection 22 is smoothly raised from the outer wall of the protective tube 18,
When the probe 3 is pulled out of the molten metal in the converter 1, the molten metal rarely solidifies and adheres to the upper surface 22a of the annular projection 22. Lower end 1 of protection tube 18
8b is formed with a fitting hole 23 into which the upper end 15a of the piston rod 15 of the pushing device 4 is fitted and connected.
ガス供給源から挿入口２に常に供給されるガス
は、溶融金属の組成に何ら影響を及ぼさない不活
性ガスたとえばアルゴンガスや窒素ガスや炭酸ガ
スが用いられる。このガスが挿入口２を経て羽口
１０から炉内に0.5〜５Kg／cm2ｇ程度の圧力で噴
入されることによつて、溶融金属の挿入口２から
の流出を防止してシール機能が達成される。この
ような上述のガスを以下「シールガス」と称する
ことにする。 The gas constantly supplied from the gas supply source to the insertion port 2 is an inert gas that does not affect the composition of the molten metal, such as argon gas, nitrogen gas, or carbon dioxide gas. This gas is injected into the furnace from the tuyere 10 through the insertion port 2 at a pressure of approximately 0.5 to 5 kg/cm 2 g, thereby preventing the molten metal from flowing out from the insertion port 2 and creating a sealing function. is achieved. The above-mentioned gas will hereinafter be referred to as "sealing gas".
転炉１内の溶融金属の測温および試料採取操作
に当つては、第１図に示すように押込装置４のピ
ストン棒１５の上端部１５ａにプローブ３を装着
し、押込装置４を挿入口２に連結する。そして開
閉弁６を開弁するとともに、押込用シリンダ１４
を伸長駆動する。そうするとピストン棒１５は炉
底１ａに向けて軸線方向に伸長し、プローブ３が
第１図の仮想線のごとく溶融金属内に挿入され
る。溶融金属の温度は、保護筒１８の上端部１８
ｃの測温体２５によつて測定される。溶融金属は
試料流入孔２１から試料採取室２０内に流入す
る。試料採取室２０内における溶融金属の温度
は、試料採取室２０の下部１９ｂに設けられた測
温体２７によつて測定される。 When measuring the temperature of the molten metal in the converter 1 and collecting samples, the probe 3 is attached to the upper end 15a of the piston rod 15 of the pushing device 4, and the pushing device 4 is inserted into the insertion port, as shown in FIG. Connect to 2. Then, the on-off valve 6 is opened, and the pushing cylinder 14 is opened.
Drive the extension. Then, the piston rod 15 extends in the axial direction toward the furnace bottom 1a, and the probe 3 is inserted into the molten metal as shown by the imaginary line in FIG. The temperature of the molten metal is determined by the upper end 18 of the protective tube 18.
It is measured by the temperature measuring element 25 of c. Molten metal flows into the sample collection chamber 20 from the sample inlet hole 21 . The temperature of the molten metal in the sample collection chamber 20 is measured by a temperature measuring element 27 provided at the lower part 19b of the sample collection chamber 20.
転炉１の操業においては、溶融金属中の炭素量
を瞬時に測定して転炉１の運転制御を行なう必要
がある。そのため一般に溶融金属の凝固点温度を
測定して炭素量を検出する方法が取られている。
試料採取室２０内において、溶融金属は下方から
凝固し始める。この実施例によれば、試料採取室
２０の下部１９ｂに測温体２７が設けられている
ので、溶融金属の凝固温度を速やかに検出できて
有利である。 In the operation of the converter 1, it is necessary to instantaneously measure the amount of carbon in the molten metal and control the operation of the converter 1. Therefore, a method is generally used in which the amount of carbon is detected by measuring the freezing point temperature of molten metal.
In the sampling chamber 20, the molten metal begins to solidify from below. According to this embodiment, since the temperature measuring element 27 is provided in the lower part 19b of the sample collection chamber 20, it is advantageous that the solidification temperature of the molten metal can be detected quickly.
溶融金属の測温および試料採取操作後、押込用
シリンダ１４を縮小駆動してピストン棒１５を第
１図の実線で示す位置まで縮小し、プローブ３を
開閉弁６よりも下方位置にもたらす。そして開閉
弁６を閉じた後、挿入口２と押込装置４とを切離
す。試料採取室２０内の凝固した金属は、テスト
ピースとして切出されて正確な組成分析が行なわ
れる。 After measuring the temperature of the molten metal and collecting a sample, the pushing cylinder 14 is driven to contract, thereby reducing the piston rod 15 to the position shown by the solid line in FIG. After closing the on-off valve 6, the insertion port 2 and the pushing device 4 are separated. The solidified metal in the sample collection chamber 20 is cut out as a test piece for accurate compositional analysis.
この構成によれば、プローブ３は炉底１ａに設
けられた挿入口２から溶融金属内に直接挿入され
る。そのため、従来のサブランスのごとく溶融金
属の上部に形成されたスラグ層を通過する必要は
なく、プローブ３は比較的短くてすむ。又長尺な
サブランスは必要とせず、取抜いの容易な寸法の
小さい押込装置で十分その機能を果すことができ
る。 According to this configuration, the probe 3 is directly inserted into the molten metal through the insertion port 2 provided in the furnace bottom 1a. Therefore, it is not necessary to pass through the slag layer formed on top of the molten metal as in the conventional sublance, and the probe 3 can be relatively short. Further, a long sub-lance is not required, and a small pushing device that can be easily removed can sufficiently perform its function.
上述の構成では、シールガスによつて炉内溶融
金属の温度が低下し、充分な精錬操業が行なわれ
ない場合もある。このような問題を解決する本発
明の一実施例は第３図に示される。 In the above configuration, the temperature of the molten metal in the furnace is lowered by the sealing gas, and a sufficient refining operation may not be performed. An embodiment of the present invention that solves this problem is shown in FIG.
第３図は本発明の一実施例の断面図であり、第
１図および第２図の構成に対応する部分には同一
の参照符を付す。この実施例では、第１図および
第２図の構成の筒体５に代えて、内管２８および
外管２９が同心二重管状に構成された筒体３０が
用いられる。炉底１ａには、同心二重羽口３１
ａ，３１ｂが形成される。内管２８内には、羽口
３１ａに連通し、プローブ３が挿脱される通路２
８ａが形成される。内管２８と外管２９との間に
は、羽口３１ｂに連通する環状の通路２９ａが形
成される。環状通路２９ａは、開閉弁６よりも上
方（転炉１寄り）で閉塞されている。通路２８
ａ，２９ａには、導入管３２，３５がそれぞれ接
続される。導入管３２には、管路３３，３４が並
列に接続される。各管路３３，３４は不活性ガス
供給源５１および酸素ガス供給源５２にそれぞれ
接続される。導入管３５には、不活性ガス供給源
５１および炭化水素ガス供給源５３にそれぞれ接
続された管路３６，３７が並列に接続される。各
管路３３，３４，３６，３７の途中には、制御弁
３３ａ，３４ａ，３６ａ，３７ａがそれぞれ備え
られている。制御弁３７ａは制御弁３４ａを開い
たとき、その酸素ガスの流量に応じて必要な流量
の炭化水素ガスおよび／または炭酸ガスを含むガ
スを導入管３５に供給するように連動される。 FIG. 3 is a sectional view of one embodiment of the present invention, and parts corresponding to the configurations in FIGS. 1 and 2 are given the same reference numerals. In this embodiment, instead of the cylindrical body 5 having the structure shown in FIGS. 1 and 2, a cylindrical body 30 in which an inner tube 28 and an outer tube 29 are configured in a concentric double tube shape is used. Concentric double tuyeres 31 are installed at the hearth bottom 1a.
a, 31b are formed. Inside the inner tube 28, there is a passage 2 which communicates with the tuyere 31a and into which the probe 3 is inserted and removed.
8a is formed. An annular passage 29a is formed between the inner tube 28 and the outer tube 29, which communicates with the tuyere 31b. The annular passage 29a is closed above the on-off valve 6 (closer to the converter 1). aisle 28
Introductory pipes 32 and 35 are connected to a and 29a, respectively. Pipe lines 33 and 34 are connected to the introduction pipe 32 in parallel. Each pipe line 33, 34 is connected to an inert gas supply source 51 and an oxygen gas supply source 52, respectively. Pipe lines 36 and 37 connected to an inert gas supply source 51 and a hydrocarbon gas supply source 53, respectively, are connected in parallel to the introduction pipe 35. Control valves 33a, 34a, 36a, 37a are provided in the middle of each pipe line 33, 34, 36, 37, respectively. When the control valve 34a is opened, the control valve 37a is interlocked so as to supply a required flow rate of gas containing hydrocarbon gas and/or carbon dioxide gas to the introduction pipe 35 according to the flow rate of the oxygen gas.
羽口３１ａ，３１ｂからガスを噴入するに当つ
ては、制御弁３３ａ，３６ａを開弁し、羽口３１
ａ，３１ｂから不活性ガスを噴入する。それと同
時に制御弁３４ａ，３７ａを開弁し、管路３４か
ら酸素ガスを供給し、管路３７からプロパンガ
ス、ブタンガスあるいは天然ガスなどの炭化水素
ガスを供給する。というのは、酸素ガスのみを不
活性ガス中に混入して供給すると、羽口３１ａ，
３１ｂを形成する筒体３０の先端部において酸素
ガスと鋼中炭素が反応して燃焼し、羽口３１ａ，
３１ｂやその付近の耐火材９が焼損する恐れがあ
る。この防止方法として炭化水素ガスを溶鋼中に
導入すると溶鋼温度が低下するという公知の技術
に基いて、羽口先端部において吸熱反応を行なわ
せて羽口３１ａ，３１ｂと耐火材９の焼損を防止
している。羽口３１ａ，３１ｂから噴入される不
活性ガス、酸素ガスおよび炭化水素ガスの流量お
よび圧力は、筒体３０からの溶融金属の流出が防
止されてシール機能が達成される程度に選択され
る。 When injecting gas from the tuyere 31a, 31b, the control valves 33a, 36a are opened, and the tuyere 31
Inert gas is injected from a and 31b. At the same time, the control valves 34a and 37a are opened, oxygen gas is supplied from the pipe 34, and hydrocarbon gas such as propane gas, butane gas, or natural gas is supplied from the pipe 37. This is because if only oxygen gas is mixed with inert gas and supplied, the tuyere 31a,
Oxygen gas and carbon in the steel react and burn at the tip of the cylinder 30 forming the tuyere 31a,
31b and the refractory material 9 in its vicinity may be burnt out. As a method for preventing this, based on a known technique in which the temperature of the molten steel decreases when hydrocarbon gas is introduced into the molten steel, an endothermic reaction is performed at the tip of the tuyere to prevent burnout of the tuyere 31a, 31b and the refractory material 9. are doing. The flow rates and pressures of the inert gas, oxygen gas, and hydrocarbon gas injected from the tuyeres 31a and 31b are selected to such an extent that molten metal is prevented from flowing out of the cylinder 30 and a sealing function is achieved. .
本発明のさらに他の実施例として、制御弁３３
ａ，３６ａを閉じたままとし、制御弁３４ａ，３
７ａを開き、羽口３１ａ，３１ｂに酸素ガスと炭
化水素ガスとを個別的に供給してもよい。この場
合には、酸素ガスは溶鋼の温度低下防止のため、
炭化水素ガスは溶鋼の温度上昇防止のためだけで
なく、シール機能をも同時に持つ。 As yet another embodiment of the present invention, the control valve 33
a, 36a remain closed, and the control valves 34a, 3
7a may be opened and oxygen gas and hydrocarbon gas may be separately supplied to the tuyeres 31a and 31b. In this case, oxygen gas is used to prevent the temperature of molten steel from decreasing.
Hydrocarbon gas not only serves to prevent the temperature of molten steel from rising, but also has a sealing function.
第４図は炉壁よりプローブを挿入する場合の本
発明の基礎となる他の構成を示す断面図であり、
第１図および第２図の構成に対応する部分には、
同一の参照符を付す。この構成では、転炉１の炉
底１ａに近接した側壁１ｂに羽口４０が形成され
る。この羽口４０は、転炉１内の溶融金属浴面に
近接し、しかも転炉１の通常の操業状態において
溶融金属が羽口４０に影響を及ぼさない位置に設
けられる。この羽口４０に連通して第１図および
第２図の構成と全く同様の構造を有する挿入口２
が斜め上向きに設けられる。挿入口２と水平面と
の成する角度θは、第５図のような在来のプロー
ブ４１を羽口４０から溶融金属内の適切な位置に
まで容易に挿入しうるような角度に選ばれる。こ
の角度θは、通常の転炉においては、20〜30度が
適当である。プローブ４１の保護筒４２の下端部
には、測温体４３が固着され、また試料採取室４
４の下部には測温体４５が固着される。試料採取
室４４の上部に連通する試料流入孔４６が保護筒
４２および試料採取容器４７を貫通して形成され
ている。本発明の実施例としては、第４図におけ
る羽口４０を、溶融金属浴面よりも下方の側壁１
ｂに設ける。又上述したプローブは測温及び試料
採取を目的とした構成になつているが、その目的
に応じて、測温体２５または試料採取室２０のい
ずれか一方のみを備えるものでもよい。 FIG. 4 is a sectional view showing another configuration that is the basis of the present invention when the probe is inserted from the furnace wall.
In the parts corresponding to the configurations of FIGS. 1 and 2,
The same references are given. In this configuration, the tuyere 40 is formed in the side wall 1b of the converter 1 close to the hearth bottom 1a. The tuyere 40 is provided close to the molten metal bath surface in the converter 1 and at a position where the molten metal does not affect the tuyere 40 during normal operation of the converter 1. An insertion port 2 communicating with this tuyere 40 and having a structure completely similar to that shown in FIGS. 1 and 2.
is installed diagonally upward. The angle θ between the insertion port 2 and the horizontal plane is selected to be such that a conventional probe 41 as shown in FIG. 5 can be easily inserted from the tuyere 40 to an appropriate position within the molten metal. This angle θ is suitably 20 to 30 degrees in a normal converter. A temperature measuring element 43 is fixed to the lower end of the protective tube 42 of the probe 41, and the sample collection chamber 4
A temperature measuring element 45 is fixed to the lower part of 4. A sample inflow hole 46 communicating with the upper part of the sample collection chamber 44 is formed through the protection tube 42 and the sample collection container 47 . In an embodiment of the present invention, the tuyere 40 in FIG.
Provided at b. Further, although the above-described probe is configured for the purpose of temperature measurement and sample collection, it may be provided with only either the temperature measuring body 25 or the sample collection chamber 20 depending on the purpose.
本発明は、上述の実施例の転炉１だけでなく、
脱ガス炉、混銑炉、電気炉などの金属精錬炉やレ
ードルにも広く実施されうる。 The present invention includes not only the converter 1 of the above-mentioned embodiment, but also
It can also be widely applied to metal refining furnaces and ladles such as degassing furnaces, mixed pig iron furnaces, and electric furnaces.
上述のごとく本発明によれば、金属精錬炉の炉
底またはその炉底に近接した側壁に形成した羽口
から、溶融金属の測温および／または試料採取の
ためのプローブを挿入するようにしたので、従来
のサブランスのごとき取扱いの煩しい長尺物が不
要となる。したがつて従来のごとく建屋が高くな
ることはなくなる。また挿入口にはガス供給源を
接続してシールするようにしたので、溶融金属が
流出することが防止される。 As described above, according to the present invention, a probe for temperature measurement and/or sample collection of molten metal is inserted through the tuyeres formed on the bottom of the metal smelting furnace or on the side wall close to the bottom of the furnace. Therefore, there is no need for long objects such as conventional sub-lances, which are difficult to handle. Therefore, the building will no longer be as high as in the past. Further, since the insertion port is connected to a gas supply source and sealed, molten metal is prevented from flowing out.
また本発明によれば、筒体３０は内管２８と外
管２９とが同心二重管状となつて構成されてお
り、内管２８には開閉弁６を介してプローブが挿
脱され、この内管２８には不活性ガスと酸素ガス
とが圧送される。したがつて開閉弁６を閉じてプ
ローブを取外すときなどにおいては、その開閉弁
に関して金属精錬炉とは反対側（第３図の下方
側）では、たとえば前述の第３図において、案内
筒１６内の残留しているガスが排出されるけれど
も、環境を悪化する恐れはない。 Further, according to the present invention, the cylindrical body 30 is configured such that the inner tube 28 and the outer tube 29 are concentric double tubes, and the probe is inserted into and removed from the inner tube 28 via the on-off valve 6. Inert gas and oxygen gas are pumped into the inner tube 28 . Therefore, when closing the on-off valve 6 and removing the probe, for example, in the guide tube 16 as shown in the above-mentioned FIG. Although residual gas is emitted, there is no risk of deteriorating the environment.
本発明では、内管２８の外周面と外管２９の内
周面との間の環状通路２９ａには、不活性ガスと
炭化水素ガスとが圧送される。炭化水素ガスは、
プローブの交換などの際に、外部に漏洩すること
はなく、環境の悪化が防がれるとともに、安全性
が向上される。 In the present invention, an inert gas and a hydrocarbon gas are pumped into the annular passage 29a between the outer circumferential surface of the inner tube 28 and the inner circumferential surface of the outer tube 29. Hydrocarbon gas is
When replacing the probe, there is no leakage to the outside, which prevents environmental deterioration and improves safety.
こうして本発明によれば、酸素ガスによつて溶
融金属の温度低下防止を行なうことができ、また
炭化水素ガスによつて溶融金属の温度上昇防止を
図ることができるとともに、溶融金属の流出を防
ぐことが可能になる。 Thus, according to the present invention, it is possible to prevent the temperature of the molten metal from decreasing by using the oxygen gas, and it is possible to prevent the temperature of the molten metal from increasing by using the hydrocarbon gas, and it is also possible to prevent the molten metal from flowing out. becomes possible.
第１図は本発明の基礎となる構成を示す断面
図、第２図はプローブ３の拡大縦断面図、第３図
は本発明の一実施例の縦断面図、第４図は本発明
の基礎となる他の構成を示す縦断面図、第５図は
プローブ４１の拡大縦断面図である。
１…転炉、１ａ…炉底、１ｂ…側壁、２…挿入
口、３…プローブ、４…押込装置、５，３０…筒
体、６…開閉弁、１８…保護筒、１９…試料採取
容器、２０…試料採取室、２１…試料流入孔、２
２…環状突記、２５，２７…測温体。
FIG. 1 is a sectional view showing the basic configuration of the present invention, FIG. 2 is an enlarged vertical sectional view of the probe 3, FIG. 3 is a vertical sectional view of an embodiment of the present invention, and FIG. FIG. 5 is an enlarged vertical cross-sectional view of the probe 41, which is a vertical cross-sectional view showing another basic configuration. DESCRIPTION OF SYMBOLS 1... Converter, 1a... Hearth bottom, 1b... Side wall, 2... Insertion port, 3... Probe, 4... Pushing device, 5, 30... Cylindrical body, 6... Opening/closing valve, 18... Protective tube, 19... Sample collection container , 20... Sample collection chamber, 21... Sample inflow hole, 2
2...Annular protrusion, 25, 27...Temperature measuring body.
Claims (1)
側壁に、溶融金属浴面よりも下方の位置で、羽口
３１ａ，３１ｂ，４０を形成し、前記羽口３１
ａ，３１ｂ，４０に連通しその羽口３１ａ，３１
ｂ，４０から金属精錬炉の外方に一直線状に延び
る筒体３０の一端部を、前記金属精錬炉に固着
し、 この筒体３０は、内管２８と、その内管２８が
挿通する外管２９とが同心二重管状となつて構成
され、 内管２８の他端部には、開弁状態において前記
筒体３０と一直線状に連通して測温および／また
は試料採取のためのプローブが挿脱される開閉弁
６を固着し、 内管２８には、開閉弁６よりも金属精錬炉寄り
で、不活性ガス供給源５１と、酸素ガス供給源５
２とを接続し、 内管２８の外周面と外管２９の内周面との間の
環状通路２９ａは、開閉弁６よりも金属精錬炉寄
りで閉塞されており、 この環状通路２９ａには、不活性ガス供給源５
１と炭化水素ガス供給源５３とを接続し、 羽口３１ａ，３１ｂ，４０から噴入される不活
性ガス、酸素ガスおよび炭化水素ガスの流量およ
び圧力は、筒体３０からの溶融金属の流出が防止
されてシール機能が達成される程度に選択される
ことを特徴とする溶融金属の測温および／または
試料採取のためのプローブ挿入装置。[Scope of Claims] 1. Tuyeres 31a, 31b, 40 are formed on the bottom of a metal refining furnace or on a side wall close to the bottom at a position below the molten metal bath surface, and the tuyeres 31
a, 31b, 40 and its tuyere 31a, 31
One end of a cylindrical body 30 extending in a straight line from b, 40 to the outside of the metal smelting furnace is fixed to the metal smelting furnace, and this cylindrical body 30 has an inner tube 28 and an outer tube through which the inner tube 28 is inserted. The inner tube 29 has a concentric double tube shape, and the other end of the inner tube 28 is provided with a probe that communicates in a straight line with the cylindrical body 30 for temperature measurement and/or sample collection when the valve is open. The on-off valve 6 that is inserted and removed is fixed to the inner pipe 28, and an inert gas supply source 51 and an oxygen gas supply source 5 are connected to the inner pipe 28 closer to the metal refining furnace than the on-off valve 6.
2, and an annular passage 29a between the outer circumferential surface of the inner tube 28 and the inner circumferential surface of the outer tube 29 is closed closer to the metal refining furnace than the on-off valve 6, and this annular passage 29a has a , inert gas supply source 5
1 and a hydrocarbon gas supply source 53, and the flow rate and pressure of the inert gas, oxygen gas, and hydrocarbon gas injected from the tuyeres 31a, 31b, and 40 are adjusted to the flow rate and pressure of the molten metal from the cylinder body 30. A probe insertion device for temperature measurement and/or sample collection of molten metal, characterized in that the probe insertion device is selected to such an extent that a sealing function is achieved by preventing
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2578579A JPS55117963A (en) | 1979-03-05 | 1979-03-05 | Thermometry of melted metal and/or sampling method, probe insertion entrance and probe |
| US06/126,105 US4290306A (en) | 1979-03-05 | 1980-02-29 | Method and apparatus for probing into a refining furnace or the like for temperature measurement for sampling, or for both |
| DE19803008061 DE3008061A1 (en) | 1979-03-05 | 1980-03-03 | METHOD AND DEVICE FOR INSERTING A PROBE INTO A TUBE WITH A FLUID |
| BR8001283A BR8001283A (en) | 1979-03-05 | 1980-03-04 | PROCESS AND APPARATUS TO PROBE A VASE |
| AU56103/80A AU529703B2 (en) | 1979-03-05 | 1980-03-04 | Probing into a refining furnace for sampling or temperature measurement |
| FR8004816A FR2451028A1 (en) | 1979-03-05 | 1980-03-04 | METHOD AND DEVICE FOR PROBING IN A REFINING OVEN OR THE LIKE FOR MEASURING TEMPERATURE, FOR SAMPLING, OR FOR THESE TWO OPERATIONS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2578579A JPS55117963A (en) | 1979-03-05 | 1979-03-05 | Thermometry of melted metal and/or sampling method, probe insertion entrance and probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55117963A JPS55117963A (en) | 1980-09-10 |
| JPS637347B2 true JPS637347B2 (en) | 1988-02-16 |
Family
ID=12175478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2578579A Granted JPS55117963A (en) | 1979-03-05 | 1979-03-05 | Thermometry of melted metal and/or sampling method, probe insertion entrance and probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55117963A (en) |
-
1979
- 1979-03-05 JP JP2578579A patent/JPS55117963A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55117963A (en) | 1980-09-10 |
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