KR950019650A - 용융금속의 변위측정 방법 및 장치 - Google Patents

용융금속의 변위측정 방법 및 장치 Download PDF

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KR950019650A
KR950019650A KR1019940037411A KR19940037411A KR950019650A KR 950019650 A KR950019650 A KR 950019650A KR 1019940037411 A KR1019940037411 A KR 1019940037411A KR 19940037411 A KR19940037411 A KR 19940037411A KR 950019650 A KR950019650 A KR 950019650A
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South Korea
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output
random signal
generating means
multiplier
frequency
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KR1019940037411A
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KR100300738B1 (ko
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다께오 야마다
마사오 스가와라
고오이찌 마쓰모도
아끼오 나가무네
고오이찌 데즈까
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야마오까 요오지로
닛뽕 고오깡 가부시끼가이샤
구보다 가쓰도시
가부시끼가이샤 니레꼬
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    • 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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/20—Controlling or regulating processes or operations for removing cast stock
    • B22D11/201—Controlling or regulating processes or operations for removing cast stock responsive to molten metal level or slag level
    • 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
    • G01F23/24—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 resistance of resistors due to contact with conductor fluid
    • 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
    • G01F23/24—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 resistance of resistors due to contact with conductor fluid
    • G01F23/245—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 resistance of resistors due to contact with conductor fluid with a probe moved by an auxiliary power, e.g. meter, to follow automatically the level
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

용융금속의 레벨을 큰 변위까기 계측한다.
제1전극(10)과 제2전극(11)을 용융금속(13)에 삽입하고, 제1의사랜덤신호를 제1전극(10)에 전송함과 동시에, 제1의사랜덤신호와 동일패턴이고, 주파수가 약간 상이한 제2의사랜덤신호를 제1의사랜덤신호와 제1승산기(5)로 곱셈하여 제1승산치를 산출한다. 제2전극(11)으로부터 얻을 수 있는 신호와 제2의사랜덤신호를 제2승산기(6)으로 곱셈하여 제2승산치를 얻는다. 제1승산치의 시계렬패턴과 제2승산치의 시계렬 패턴에서 발생하는 최대상관치의 시간차로부터 용융금속의 변위를 연산한다.

Description

용융금속의 변위측정 방법 및 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는, 실시예의 구성을 나타낸 블럭도,
제2도는, 클록발생기의 구성을 나타낸 블록도,
제3도는, 의사랜덤신호 발생회로(M, 계렬신호발생기)의 한예를 나타낸 도면,
제4도는, 3단 시프트레지스터에 의한 M 계열신호 출력을 나타낸 도면,
제5도는, 상관치의 출력을 설명하는 도면,
제6도는, 상관주기(T)의 산출방법을 설명하는 도면,
제7도는, 제1저역필터의출력(S1)과 제2저역필터의 출력(S2)을 나타낸 도면,
제8도는, 용융금속의 레벨과 신호전송 거리를 설명하는 도면,
제9도는, 위상차(X)를 산출하는 설명도,
제10도는, 본 실시예의 실측치의 한예를 나타낸 도면.

Claims (3)

  1. 전기전도성을 구비한 용융금속에 제1전극과 제2전극을 삽입하고, 제1의사랜덤신호를 제1전극에 전송함과 동시에, 제1의사랜덤신호와 동일한 패턴이고, 주파수가 약간 다른 제2의사랜덤신호를 제1의사랜덤신호에 곱셈하여 제1승산치를 산출하고, 제2전극으로부터 얻을 수 있는 신호와 제2의사랜덤신호를 곱셈하여 제2승산치를 산출한 다음 제1승산치의 시계렬 패턴과, 제2승산치의 시계렬 패턴에 발생하는 최대상관치의 시간차로부터 용융금속의 변위를 연산하는 것을 특징으로 하는 용융금속의 변위측정방법.
  2. 제1의사랜덤신호를 발생하는 제1의사랜덤신호 발생수단과, 제1의사랜덤신호와 동일 패턴이고 주파수가 약간 다른 제2의사랜덤신호를 발생한 제2의사랜덤신호 발생수단과, 전기전도성을 구비한 용융금속에 삽입되어, 제1의사랜덤신호 발생수단에 접속된 제1전극과 용융금속에 삽입된 제2전극과, 제1의사랜덤신호 발생수단의 출력과 제2의사랜덤신호 발생수단의 출력을 곱셈하여 제1승산치를 출력하는 제1승산기와, 제2전극에 접속되어, 그 출력과 제2의사랜덤신호 발생수단의 출력을 곱셈하여 제2승산치를 출력하는 제2승산기와 제1승산기의 출력을 적분하는 제1적분연산수단과 제2승산기의 출력을 적분하는 제1적분연산수단과 제1적분치의 시계렬 패턴과 제2적분치의 시계렬패턴에 발생하는 최대상관치의 시간차를 구하여, 용융금속의 변위를 산출하는 연산수단 등을 구비한 것을 특징으로 하는 용융금속의 변위측정방법.
  3. 제2항에 있어서, 제1의 랜덤신호 발생수단은 제1클럭신호 발생수단에 의하여 구동되고, 제1클록발생수단은 주파수 (a)를 발진하는 제1발진기와, 주파수(a)보다 충분히 큰 주파수 (c)를 발진하는 공통발진기와, 이 공통 발진기의 출력과 제1발진기의 출력을 혼합하는 제1혼합기와, 제1혼합기 출력으로 부터 주파수(c+a)의 출력을 얻는 제1저역필터로 되었고, 제2의사랜덤신호 발생수단은 제2클록신호 발생수단에 의하여 구동되고 제2클록발생수단 주파수 (a)와 약간 다른 주파수(a')를 발진하는 제2발진기와, 제2발진기의 출력과 공통발진기의 출력을 혼합하는 제2혼합기와, 이 제2혼합기의 출력으로부터 주파수(c+a')의 출력을 얻는 제2저역필터등으로 된 것을 특징으로 하는 용융금속의 변위측정방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940037411A 1993-12-27 1994-12-27 용융금속의변위측정방법및장치 KR100300738B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP93-330385 1993-12-27
JP05330385A JP3107183B2 (ja) 1993-12-27 1993-12-27 溶融金属の変位測定方法および装置

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KR950019650A true KR950019650A (ko) 1995-07-24
KR100300738B1 KR100300738B1 (ko) 2002-02-19

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US (1) US5507854A (ko)
JP (1) JP3107183B2 (ko)
KR (1) KR100300738B1 (ko)
CN (1) CN1050912C (ko)
IT (1) IT1271331B (ko)

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CN102006812B (zh) * 2008-04-16 2014-08-06 花王株式会社 清扫用片材及其制造方法
JP5379436B2 (ja) * 2008-09-29 2013-12-25 大王製紙株式会社 清掃シート
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CN103562693B (zh) * 2011-06-24 2016-01-06 株式会社尼利可 熔融金属液位测定装置和熔融金属液位测定方法
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KR101812882B1 (ko) 2016-06-07 2017-12-27 장성윤 디지털 신호를 이용한 실시간 수위 계측방법 및 그 계측장치
US11029187B2 (en) 2017-06-21 2021-06-08 Vega Grieshaber Kg Fill level reflectometer having a variable measurement sequence
CN107716887B (zh) * 2017-10-09 2019-12-03 中南大学 一种电脉冲作用下连铸结晶器内钢液凝固模拟装置

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KR100774939B1 (ko) * 2000-05-23 2007-11-08 후지필름 가부시키가이샤 동적변화검출방법, 동적변화검출장치 및 초음파진단장치

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Publication number Publication date
IT1271331B (it) 1997-05-27
JPH07191130A (ja) 1995-07-28
CN1050912C (zh) 2000-03-29
ITMI942640A1 (it) 1996-06-23
ITMI942640A0 (it) 1994-12-23
CN1113003A (zh) 1995-12-06
JP3107183B2 (ja) 2000-11-06
KR100300738B1 (ko) 2002-02-19
US5507854A (en) 1996-04-16

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