JPS59114417A - Measurement of molten metal level for continuously casting mold - Google Patents
Measurement of molten metal level for continuously casting moldInfo
- Publication number
- JPS59114417A JPS59114417A JP22476082A JP22476082A JPS59114417A JP S59114417 A JPS59114417 A JP S59114417A JP 22476082 A JP22476082 A JP 22476082A JP 22476082 A JP22476082 A JP 22476082A JP S59114417 A JPS59114417 A JP S59114417A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molten metal
- metal level
- magnetic field
- detection coil
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、内部に溶鋼の電磁攪拌を行なう電磁攪拌用
磁石が埋設されている連続鋳造用鋳型の湯面レベル測定
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for measuring the level of a mold for continuous casting, in which an electromagnetic stirring magnet for electromagnetically stirring molten steel is embedded.
〈従来技術〉
連続鋳造においては、鋳片の品質向上を図るために、鋳
型内部に電磁攪拌用磁石を埋設して鋳型内の溶鋼の電磁
攪拌を行なっている。従来このような鋳型の湯面レベル
を測定する方法としては、鋳型内壁に複数の熱電対を埋
め込んで温度分布を測定して湯面レベルを知る方法やガ
ンマ線の透過率を利用したＲ工（ラジオアイソトープ）
法などがあるが、応答性、安全性に問題がある。<Prior Art> In continuous casting, in order to improve the quality of slabs, electromagnetic stirring magnets are embedded inside the mold to electromagnetically stir the molten steel within the mold. Conventional methods for measuring the level of hot water in molds include a method of embedding multiple thermocouples in the inner wall of the mold to measure the temperature distribution and determining the level of the hot water, and a method that uses the transmittance of gamma rays to determine the level of the hot water. isotope)
Although there are laws, there are problems with responsiveness and safety.
また、渦流による電磁気的な方法もあるが、鋳型内の強
力な電攪磁場が外乱ノイズとして問題となる。There is also an electromagnetic method using eddy currents, but the strong electromagnetic field inside the mold poses a problem as disturbance noise.
〈発明の目的〉
この発明は、前述のような事情に鑑みて提案されたもの
で、その目的は、比較的簡単な構成で、応答性、安全性
に優れ、確実な測定が可能な湯面レベル測定方法を提供
することにある。<Object of the Invention> This invention was proposed in view of the above-mentioned circumstances, and its purpose is to provide a hot water surface with a relatively simple configuration, excellent responsiveness and safety, and capable of reliable measurement. The object of the present invention is to provide a level measurement method.
〈発明の構成〉
この発明に係る湯面レベル測定方法は、鋳型の上部に検
出コイルを設け、電磁攪拌用磁石の漏洩磁場によって発
生する前記検出コイルの誘導起電力を測定し、これによ
り湯面レベルを知るようにしたものである。<Structure of the Invention> The hot water level measuring method according to the present invention includes a detection coil provided above the mold, measures the induced electromotive force of the detection coil generated by the leakage magnetic field of the electromagnetic stirring magnet, and thereby measures the hot water level. This is to know the level.
〈実施例〉
以下、この発明を図示する一実施例に基づいて説明する
。この発明は、鋳型１内に埋設された電磁攪拌用電磁石
２の漏洩磁場ＨＲが湯面レベルＸに依存することを利用
したものであり、鋳型１の上面に、鋳型開口とほぼ等し
い開口を有する複数巻の検出コイル３を設置し、電磁石
２によって形成される磁場のうちコイル３断面を貫く漏
洩磁場ＨＲにより発生する検出コイル３の訪導起電力ｅ
を測定して湯面レベルＸを測定するようにされでいる。<Example> The present invention will be described below based on an illustrative example. This invention utilizes the fact that the leakage magnetic field HR of the electromagnetic stirring electromagnet 2 embedded in the mold 1 depends on the level A detection coil 3 with multiple turns is installed, and the induced electromotive force e of the detection coil 3 is generated by the leakage magnetic field HR penetrating the cross section of the coil 3 in the magnetic field formed by the electromagnet 2.
The water surface level X is determined by measuring the water level.
ここで、磁場Ｈａにより検出コイル３に発生する起電力
θは、次式で表わされる。Here, the electromotive force θ generated in the detection coil 3 by the magnetic field Ha is expressed by the following equation.
０２μｍ）＠ＨＢ＊ｓｅω＠ｎ
ただし、μ０：誘磁率
Ｓ：コイル断面積
ω：角周波数
ｎ：コイル巻数
この式から明らかなように、磁場ＨＲは、湯面レベルＸ
が上昇すると単調ｉこ減少するので、起電力θを測定す
ることにより湯面レベルＸを知ることができる。02μm) @HB*seω@n However, μ0: Permittivity S: Coil cross-sectional area ω: Angular frequency n: Number of coil turns As is clear from this equation, the magnetic field HR is equal to the hot water level
When θ increases, it monotonically decreases by i, so the hot water level X can be determined by measuring the electromotive force θ.
〈発明の効果〉
前述のとおり、この発明によれば、漏洩磁場を利用して
湯面レベルを測定するため、比較的簡単な結成で、応答
性、安全性に優れ、確実な測定が可能となる。<Effects of the Invention> As described above, according to the present invention, since the leakage magnetic field is used to measure the hot water level, reliable measurement with excellent responsiveness and safety is possible with a relatively simple construction. Become.
図面は、この発明に係る湯面レベル測定方法を示す概略
図である。
１・・鋳型、２・・電磁石、３φ−検出コイル 。The drawing is a schematic diagram showing a hot water level measuring method according to the present invention. 1.Mold, 2.Electromagnet, 3φ-detection coil.
Claims (1)
用磁石が埋設されている連続鋳造用鋳型の湯面レベル測
定方法であって、前記鋳型の上部に検出コイルを設け、
前記磁石の漏洩磁場によって発生する前記検出コイルの
誘導起電力を測定することを特徴とする゛連続鋳造用鋳
型の湯面レベル測定方法。(1) Electromagnetic stirring that performs electromagnetic stirring of molten steel inside...
A method for measuring the level of hot water in a continuous casting mold in which a magnet is embedded, the method comprising: installing a detection coil in the upper part of the mold;
``A method for measuring a melt level in a mold for continuous casting, characterized by measuring an induced electromotive force of the detection coil generated by a leakage magnetic field of the magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22476082A JPS59114417A (en) | 1982-12-21 | 1982-12-21 | Measurement of molten metal level for continuously casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22476082A JPS59114417A (en) | 1982-12-21 | 1982-12-21 | Measurement of molten metal level for continuously casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59114417A true JPS59114417A (en) | 1984-07-02 |
Family
ID=16818797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22476082A Pending JPS59114417A (en) | 1982-12-21 | 1982-12-21 | Measurement of molten metal level for continuously casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59114417A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131549U (en) * | 1984-07-30 | 1986-02-25 | 三菱重工業株式会社 | Mold equipment in continuous casting equipment |
| KR20010055792A (en) * | 1999-12-13 | 2001-07-04 | 신현준 | Method to measure the level of molten steel in an electromagnetic casting |
| KR20010063081A (en) * | 1999-12-21 | 2001-07-09 | 이구택 | A method for measuring molten metal level and probe therefor |
| KR100423743B1 (en) * | 1998-12-21 | 2004-06-18 | 주식회사 포스코 | In-mold position measuring device for electromagnetic continuous casting equipment |
| KR100466179B1 (en) * | 1999-07-16 | 2005-01-13 | 주식회사 포스코 | Measuring method of molten steel level in electromagnetic casting |
-
1982
- 1982-12-21 JP JP22476082A patent/JPS59114417A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6131549U (en) * | 1984-07-30 | 1986-02-25 | 三菱重工業株式会社 | Mold equipment in continuous casting equipment |
| KR100423743B1 (en) * | 1998-12-21 | 2004-06-18 | 주식회사 포스코 | In-mold position measuring device for electromagnetic continuous casting equipment |
| KR100466179B1 (en) * | 1999-07-16 | 2005-01-13 | 주식회사 포스코 | Measuring method of molten steel level in electromagnetic casting |
| KR20010055792A (en) * | 1999-12-13 | 2001-07-04 | 신현준 | Method to measure the level of molten steel in an electromagnetic casting |
| KR20010063081A (en) * | 1999-12-21 | 2001-07-09 | 이구택 | A method for measuring molten metal level and probe therefor |
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