WO2000009975A1 - Measuring device for contactless measurement of the properties of a moving metal strip - Google Patents

Measuring device for contactless measurement of the properties of a moving metal strip Download PDF

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Publication number
WO2000009975A1
WO2000009975A1 PCT/DE1999/002345 DE9902345W WO0009975A1 WO 2000009975 A1 WO2000009975 A1 WO 2000009975A1 DE 9902345 W DE9902345 W DE 9902345W WO 0009975 A1 WO0009975 A1 WO 0009975A1
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WO
WIPO (PCT)
Prior art keywords
metal strip
measuring device
squeegee
gas
measuring
Prior art date
Application number
PCT/DE1999/002345
Other languages
German (de)
French (fr)
Inventor
Stephan Sadowski
Gero Wiemann
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19923949A external-priority patent/DE19923949A1/en
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2000009975A1 publication Critical patent/WO2000009975A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/041—Mountings in enclosures or in a particular environment

Definitions

  • the invention relates to a measuring device for the contactless measurement of properties of a moving metal strip, in particular a steel strip.
  • the object is solved according by a measuring device for the contactless measuring properties of a moving metal strip, particularly a steel strip at ⁇ demanding.
  • the measuring device has a squeegee that can be arranged parallel to the surface of the metal strip and a blowing device for blowing gas between the metal strip and the squeegee, the blowing device being designed to blow in the gas such that the aerodynamic paradox is effective between the metal strip and the squeegee.
  • there is an attraction between the metal strip and the measuring device which reduces or prevents spacing fluctuations.
  • the squeegee has at least one gas outlet opening for blowing gas between the metal strip and the squeegee.
  • the measuring device has a sensor for contactless measurement of the properties of the metal strip, a measuring space being provided between the sensor and the gas outlet opening, into which the gas can be blown.
  • the measuring device is designed to measure the properties of the metal strip at the location of the metal strip at which gas strikes the metal strip through the gas outlet opening. In this way, it is guaranteed at the same time that interference caused by dirt or water on the metal strip is removed. This configuration makes it possible to reduce or compensate for the most important interferences in the contactless measurement of the temperature of a metal strip.
  • the gas is air.
  • the measuring device is designed to measure the temperature of the metal strip.
  • the senor is a temperature sensor.
  • the senor is a pyrometer.
  • the measuring device is designed to measure the roughness of the metal strip. In a further advantageous embodiment of the invention, the measuring device is designed to measure surface defects of the metal strip.
  • the squeegee has a flow resistance on its side facing the metal strip.
  • the squeegee has a flow resistance on its side facing the metal strip.
  • a flow resistance can be a step or a groove in the squeegee.
  • the suction base is arranged under the metal band.
  • FIG. 1 shows an advantageous embodiment of a measuring head which is part of a temperature measuring device on which the principle according to the invention is based
  • FIG. 2 shows a further advantageous embodiment of a measuring head which is part of a temperature measuring device on which the principle according to the invention is based
  • FIG. 3 shows an advantageous embodiment of a temperature measuring device which is based on the principle according to the invention.
  • 1 shows an advantageous embodiment of a measuring head 9 of a temperature measuring device for measuring the temperature ei ⁇ nes metal strip 1, the principle of the invention is based.
  • the measuring head 9 has a lens 11 which bundles infrared rays 12 from the metal strip 1.
  • the bundled infrared rays 12 are passed on via a glass fiber cable 10.
  • the measuring head 9 has a compressed air inlet opening 8 through which compressed air is blown into its interior.
  • the measuring head 9 also has a suction base 4 with an air outlet opening 13 through which the compressed air flows against the metal strip 1. Between the suction cup 4 and the metal strip 1, a is indicated by the arrows 2 and 3 ⁇ forms pointed air flow out.
  • the geometry of the squeegee 4 and its distance from the metal strip 1 are matched to the flow velocity of the air 2 and 3 flowing between the squeegee 4 and the metal strip 1 in such a way that an aerodynamic paradox occurs. This creates a suction effect between the squeegee 4 and the metal strip 1. It is particularly advantageous to connect the squeegee 4 to the remaining part of the measuring head 9 via a flexible connecting piece 6.
  • the suction cup 4 floats on the metal strip 1. In this way, a particularly stable, ie con- stant, distance between squeegee 4 and the metal strip 1 on.
  • the measuring head 9 has a cooling water inlet opening 7, through which cooling water or another coolant flows into the measuring head 9.
  • the cooling water exits through a cooling water outlet opening 5 and runs over the upper side 20 of the suction foot 4. In this way, the suction foot 4 is cooled and is particularly well suited for measuring the properties of a hot moving metal strip.
  • FIG 2 shows a further advantageous embodiment of a measuring head 14 which is part of a temperature measuring device on which the principle according to the invention is based.
  • Have along the reference numerals 1 to 3, 6 to 8 and 10 to 13 have the same meaning as m FIG 1.
  • the top surface 22 of the Saugfu ⁇ SLI 19 m 2 shows the top surface 20 of the suction cup 4 m FIG 1 is designed accordingly, the underside of different of the squeegee 19 m FIG 2 from the bottom 21 of the squeegee 4 m FIG 1.
  • the bottom of the squeegee 19 has two areas 23 and 24, which are separated by a step 25. This stage 25 represents a flow resistance.
  • the step 25 on the underside of the squeegee 19 represents a flow resistance which stabilizes the air flow 2 and 3 between the squeegee 19 and the metal strip 1.
  • the lens 11 bundles the infrared beam for transmission in a glass fiber cable 10.
  • the temperature measuring devices with the measuring heads 9 and 14 according to FIGS. 1 and 2 advantageously have a pyrometer (not shown) as a sensor at the end of the glass fiber cables 10.
  • FIG. 3 shows an exemplary embodiment of a complete temperature measuring device in an exemplary embodiment and using the principle according to the invention.
  • Reference numeral 30 denotes a measuring head which corresponds to m modified form can also be replaced by corresponding configurations according to FIG 1 or 2. Due to the aerodynamic paradox, the measuring head 30 hovers over a metal strip 1. Infrared light emitted by the metal strip 1 is bundled in a lens 35 and fed via a glass fiber cable 32 to a pyrometer 36, by means of which a measured value for the temperature of the metal strip 1 is determined.
  • the glass fiber cable 32 is accommodated with a compressed air line 33 in a flexible protective cable 34.
  • the compressed air lines 33 and the glass fiber cable 32 are guided into a protective housing 38, which also accommodates the pyrometer 36.
  • a protective housing 38 which also accommodates the pyrometer 36.
  • compressed air line 33 compressed air is blown into the measuring head 30 via a compressed air connection 37, which hits the metal strip 1 via an outflow opening 39.
  • the exemplary embodiments according to FIGS. 1 to 3 describe a temperature measuring device, but can also be used correspondingly for measuring devices for measuring other properties of the metal strip 1.
  • the surface quality of the metal strip 1 can be measured.
  • the pyrometer is replaced by an optical evaluation device, e.g. a camera to replace.

Abstract

The invention relates to a measuring device for contactless measurement of the properties of a moving metal strip, especially a steel strip, wherein the measuring device has a suction foot that can be disposed parallel to the surface of the metal strip and a blowing device for blowing gas between the metal strip and the suction foot, wherein the blowing device for blowing the gas is designed in such a way that the aerodynamic paradox is effectively applied between the metal strip and the suction foot.

Description

Beschreibungdescription
Meßeinrichtung zum berührungslosen Messen von Eigenschaften eines bewegten MetallbandesMeasuring device for the contactless measurement of properties of a moving metal strip
Die Erfindung betrifft eine Meßeinrichtung zum berührungslosen Messen von Eigenschaften eines bewegten Metallbandes, insbesondere eines Stahlbandes.The invention relates to a measuring device for the contactless measurement of properties of a moving metal strip, in particular a steel strip.
Es ist Aufgabe der Erfindung, eine Meßeinrichtung zum Messen von Eigenschaften eines bewegten Metallbandes anzugeben, das eine besonders präzise Messung dieser Eigenschaften des Metallbandes erlaubt.It is an object of the invention to provide a measuring device for measuring properties of a moving metal strip, which allows a particularly precise measurement of these properties of the metal strip.
Die Aufgabe wird erfindungsgemäß durch eine Meßeinrichtung zum berührungslosen Messen von Eigenschaften eines bewegten Metallbandes, insbesondere eines Stahlbandes, gemäß An¬ spruch 1 gelöst. Dabei weist die Meßeinrichtung einen parallel zur Oberfläche des Metallbandes anordbaren Saugfuß und eine Blaseinrichtung zum Einblasen von Gas zwischen das Metallband und dem Saugfuß auf, wobei die Blaseinrichtung das Gas derart einblasend ausgebildet ist, daß zwischen dem Metallband und dem Saugfuß das aerodynamische Paradoxon wirksam ist. Auf diese Weise kommt es zu einer Anziehung zwischen Me- tallband und Meßeinrichtung, was Abstandsschwankungen verringert bzw. verhindert. Durch die Verminderung bzw. Verhinde¬ rung von Abstandsschwankungen wird die Messung der zu messen¬ den Eigenschaften des Metallbandes besonders präzise. Auf diese Weise wird gleichzeitig garantiert, daß Störeinflüsse durch Verschmutzungen oder Wasser auf dem Metallband entfernt werden. Durch diese Ausgestaltung ist es möglich, die wichtigsten Störeinflüsse bei der berührungslosen Messung der Eigenschaften des Metallbandes zu vermindern bzw. zu kompensieren. In vorteilhafter Ausgestaltung der Erfindung weist der Saugfuß zumindest eine Gasauslaßöffnung zum Einblasen von Gas zwischen das Metallband und dem Saugfuß auf.The object is solved according by a measuring device for the contactless measuring properties of a moving metal strip, particularly a steel strip at ¬ demanding. 1 The measuring device has a squeegee that can be arranged parallel to the surface of the metal strip and a blowing device for blowing gas between the metal strip and the squeegee, the blowing device being designed to blow in the gas such that the aerodynamic paradox is effective between the metal strip and the squeegee. In this way there is an attraction between the metal strip and the measuring device, which reduces or prevents spacing fluctuations. By reducing or Verhinde ¬ tion of variations in distance, the measurement ¬ to measure the properties of the metal strip particularly precise. In this way, it is guaranteed at the same time that interference caused by dirt or water on the metal strip is removed. This configuration makes it possible to reduce or to compensate for the most important interfering influences in the contactless measurement of the properties of the metal strip. In an advantageous embodiment of the invention, the squeegee has at least one gas outlet opening for blowing gas between the metal strip and the squeegee.
In weiterhin vorteilhafter Ausgestaltung der Erfindung weist die Meßeinrichtung einen Aufnehmer zum berührungslosen Messen der Eigenschaften des Metallbandes auf, wobei zwischen dem Aufnehmer und der Gasauslaßöffnung ein Meßraum vorgesehen ist, in den das Gas einblasbar ist.In a further advantageous embodiment of the invention, the measuring device has a sensor for contactless measurement of the properties of the metal strip, a measuring space being provided between the sensor and the gas outlet opening, into which the gas can be blown.
In weiterhin vorteilhafter Ausgestaltung der Erfindung ist die Meßeinrichtung die Eigenschaften des Metallbandes an der Stelle des Metallbandes messend ausgebildet, an der durch die Gasauslaßöffnung Gas auf das Metallband trifft. Auf diese Weise wird gleichzeitig garantiert, daß Störeinflüsse durch Verschmutzungen oder Wasser auf dem Metallband entfernt werden. Durch diese Ausgestaltung ist es möglich, die wichtigsten Störeinflüsse bei der berührungslosen Messung der Temperatur eines Metallbandes zu vermindern bzw. zu kompensieren.In a further advantageous embodiment of the invention, the measuring device is designed to measure the properties of the metal strip at the location of the metal strip at which gas strikes the metal strip through the gas outlet opening. In this way, it is guaranteed at the same time that interference caused by dirt or water on the metal strip is removed. This configuration makes it possible to reduce or compensate for the most important interferences in the contactless measurement of the temperature of a metal strip.
In weiterhin vorteilhafter Ausgestaltung der Erfindung ist das Gas Luft.In a further advantageous embodiment of the invention, the gas is air.
In weiterhin vorteilhafter Ausgestaltung der Erfindung ist die Meßeinrichtung zur Messung der Temperatur des Metallbandes ausgebildet.In a further advantageous embodiment of the invention, the measuring device is designed to measure the temperature of the metal strip.
In weiterhin vorteilhafter Ausgestaltung der Erfindung ist der Aufnehmer ein Temperaturaufnehmer.In a further advantageous embodiment of the invention, the sensor is a temperature sensor.
In weiterhin vorteilhafter Ausgestaltung der Erfindung ist der Aufnehmer ein Pyrometer.In a further advantageous embodiment of the invention, the sensor is a pyrometer.
In weiterhin vorteilhafter Ausgestaltung der Erfindung ist die Meßeinrichtung zur Messung der Rauhigkeit des Metallbandes ausgebildet. In weiterhin vorteilhafter Ausgestaltung der Erfindung ist die Meßeinrichtung zur Messung von Oberflächenfehlern des Metallbandes ausgebildet.In a further advantageous embodiment of the invention, the measuring device is designed to measure the roughness of the metal strip. In a further advantageous embodiment of the invention, the measuring device is designed to measure surface defects of the metal strip.
In weiterhin vorteilhafter Ausgestaltung der Erfindung weist der Saugfuß einen Strömungswiderstand an seiner dem Metallband zugewandten Seite auf.In a further advantageous embodiment of the invention, the squeegee has a flow resistance on its side facing the metal strip.
In weiterhin vorteilhafter Ausgestaltung der Erfindung weist der Saugfuß einen Strömungswiderstand an seiner dem Metallband zugewandten Seite auf. Auf diese Weise wird eine Stabilisierung der Gasströmung und damit des aerodynamischen Paradoxons erreicht. Dies ist besonders von Vorteil, wenn die Temperatur eines Metallbandes gemessen werden soll, die höher ist als 500 °C. Dieses ist z.B. beim Warmwalzen von Metallbändern der Fall. Ein derartiger Strömungswiderstand kann z.B. eine Stufe oder eine Nut im Saugfuß sein.In a further advantageous embodiment of the invention, the squeegee has a flow resistance on its side facing the metal strip. In this way, the gas flow and thus the aerodynamic paradox are stabilized. This is particularly advantageous if the temperature of a metal strip is to be measured, which is higher than 500 ° C. This is e.g. the case when hot rolling metal strips. Such a flow resistance can e.g. be a step or a groove in the squeegee.
In besonders vorteilhafter Ausgestaltung der Erfindung ist der Saugfuß unter dem Metallband angeordnet.In a particularly advantageous embodiment of the invention, the suction base is arranged under the metal band.
Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen. Dabei wird die Erfindung beispielhaft anhand einer Temperaturmeßeinrich- tung erläutert, der das erfindungsgemäße Prinzip zugrunde liegt. Im einzelnen zeigen:Further advantages and details emerge from the following description of exemplary embodiments. The invention is explained by way of example with the aid of a temperature measuring device on which the principle according to the invention is based. In detail show:
FIG 1 eine vorteilhafte Ausgestaltung eines Meßkopfes, der Teil einer Temperaturmeßeinrichtung ist, der das erfindungsgemäße Prinzip zugrunde liegt,1 shows an advantageous embodiment of a measuring head which is part of a temperature measuring device on which the principle according to the invention is based,
FIG 2 eine weitere vorteilhafte Ausgestaltung eines Meßkopfes, der Teil einer Temperaturmeßeinrichtung ist, der das erfindungsgemäße Prinzip zugrunde liegt, FIG 3 eine vorteilhafte Ausgestaltung einer Temperaturmeßeinrichtung, der das erfindungsgemäße Prinzip zugrunde liegt. FIG 1 zeigt eine vorteilhafte Ausgestaltung eines Meßkopfes 9 einer Temperaturmeßeinrichtung zur Messung der Temperatur ei¬ nes Metallbandes 1, der das erfindungsgemäße Prinzip zugrunde liegt. Zur Messung der Temperatur weist der Meßkopf 9 eine Linse 11 auf, die Infrarotstrahlen 12 vom Metallband 1 bündelt. Die gebündelten Infrarotstrahlen 12 werden über ein Glasfaserkabel 10 weitergeleitet. Der Meßkopf 9 weist eine Drucklufteinlaßöffnung 8 auf, durch die Druckluft in sein In- neres geblasen wird. Der Meßkopf 9 weist ferner einen Saugfuß 4 mit einer Luftauslaßöffnung 13 auf, durch die die Druckluft gegen das Metallband 1 strömt. Zwischen dem Saugfuß 4 und dem Metallband 1 bildet sich eine durch die Pfeile 2 und 3 ange¬ deutete Luftströmung aus. Die Geometrie des Saugfußes 4 sowie dessen Abstand vom Metallband 1 sind derart mit der Strömungsgeschwindigkeit der zwischen Saugfuß 4 und Metallband 1 strömenden Luft 2 und 3 abgestimmt, daß es zum aerodynamischen Paradoxon kommt. Dadurch bildet sich eine Saugwirkung zwischen Saugfuß 4 und Metallband 1. Besonders vorteilhaft ist es, den Saugfuß 4 über ein flexibles Verbindungsstück 6 mit dem restlichen Teil des Meßkopfes 9 zu verbinden. Wenn sich durch das aerodynamische Paradoxon ein stabiles Gaspol¬ ster aufbaut, so schwebt der Saugfuß 4 über dem Metallband 1. Auf diese Weise stellt sich ein besonders stabiler, d.h. kon- stanter, Abstand zwischen Saugfuß 4 und Metallband 1 ein.2 shows a further advantageous embodiment of a measuring head which is part of a temperature measuring device on which the principle according to the invention is based, FIG. 3 shows an advantageous embodiment of a temperature measuring device which is based on the principle according to the invention. 1 shows an advantageous embodiment of a measuring head 9 of a temperature measuring device for measuring the temperature ei ¬ nes metal strip 1, the principle of the invention is based. To measure the temperature, the measuring head 9 has a lens 11 which bundles infrared rays 12 from the metal strip 1. The bundled infrared rays 12 are passed on via a glass fiber cable 10. The measuring head 9 has a compressed air inlet opening 8 through which compressed air is blown into its interior. The measuring head 9 also has a suction base 4 with an air outlet opening 13 through which the compressed air flows against the metal strip 1. Between the suction cup 4 and the metal strip 1, a is indicated by the arrows 2 and 3 ¬ forms pointed air flow out. The geometry of the squeegee 4 and its distance from the metal strip 1 are matched to the flow velocity of the air 2 and 3 flowing between the squeegee 4 and the metal strip 1 in such a way that an aerodynamic paradox occurs. This creates a suction effect between the squeegee 4 and the metal strip 1. It is particularly advantageous to connect the squeegee 4 to the remaining part of the measuring head 9 via a flexible connecting piece 6. If builds up by the aerodynamic paradox a stable Gaspol ¬ art, the suction cup 4 floats on the metal strip 1. In this way, a particularly stable, ie con- stant, distance between squeegee 4 and the metal strip 1 on.
Der Meßkopf 9 weist in beispielhafter Ausgestaltung eine Kühlwassereinlaßöffnung 7 auf, durch die Kühlwasser, oder ein anderes Kühlmittel, in den Meßkopf 9 strömt. Das Kühlwasser tritt durch eine Kühlwasserauslaßöffnung 5 aus und läuft über die Oberseite 20 des Saugfußes 4. Auf diese Weise wird der Saugfuß 4 gekühlt und ist besonders gut geeignet zur Messung der Eigenschaften eines heißen bewegten Metallbandes.In an exemplary embodiment, the measuring head 9 has a cooling water inlet opening 7, through which cooling water or another coolant flows into the measuring head 9. The cooling water exits through a cooling water outlet opening 5 and runs over the upper side 20 of the suction foot 4. In this way, the suction foot 4 is cooled and is particularly well suited for measuring the properties of a hot moving metal strip.
FIG 2 zeigt eine weitere vorteilhafte Ausgestaltung eines Meßkopfes 14, der Teil einer Temperaturmeßeinrichtung ist, der das erfindungsgemäße Prinzip zugrunde liegt. Dabei haben die Bezugszeichen 1 bis 3, 6 bis 8 und 10 bis 13 die gleiche Bedeutung wie m FIG 1. Wahrend die Oberseite 22 des Saugfu¬ ßes 19 m FIG 2 entsprechend der Oberseite 20 des Saugfußes 4 m FIG 1 ausgestaltet ist, unterscheidet sich die Unterseite des Saugfußes 19 m FIG 2 von der Unterseite 21 des Saugfußes 4 m FIG 1. Die Unterseite des Saugfußes 19 weist zwei Bereiche 23 und 24 auf, die durch eine Stufe 25 getrennt sind. Diese Stufe 25 stellt einen Stromungswiderstand dar. Es hat sich gezeigt, daß es bei Oberflachentemperaturen oberhalb von 500 °C aufgrund der Erwärmung der Luft zwischen dem Saugfuß 4 und dem Metallband 1 zu einer Instabilität m der Luftströmung kommen kann. Dies wiederum birgt die Gefahr einer Berührung von Metallband 1 und Saugfuß 4. Die Stufe 25 an der Unterseite des Saugfußes 19 stellt einen Stromungswiderstand dar, der die Luftströmung 2 und 3 zwischen dem Saugfuß 19 und dem Metallband 1 stabilisiert.2 shows a further advantageous embodiment of a measuring head 14 which is part of a temperature measuring device on which the principle according to the invention is based. Have along the reference numerals 1 to 3, 6 to 8 and 10 to 13 have the same meaning as m FIG 1. While the top surface 22 of the Saugfu ¬ SLI 19 m 2 shows the top surface 20 of the suction cup 4 m FIG 1 is designed accordingly, the underside of different of the squeegee 19 m FIG 2 from the bottom 21 of the squeegee 4 m FIG 1. The bottom of the squeegee 19 has two areas 23 and 24, which are separated by a step 25. This stage 25 represents a flow resistance. It has been shown that, at surface temperatures above 500 ° C., the air flow can become unstable due to the heating of the air between the suction base 4 and the metal strip 1. This in turn harbors the risk of contact between the metal strip 1 and the squeegee 4. The step 25 on the underside of the squeegee 19 represents a flow resistance which stabilizes the air flow 2 and 3 between the squeegee 19 and the metal strip 1.
Bei den Meßkopfen 9 bzw. 14 gemäß FIG 1 bzw. 2 ist vorgese¬ hen, daß der Infrarotstrahl 12 von dem Metallband 1 durch die Auslaßoffnung 13 die Linse 11 trifft. Auf diese Weise wird erreicht, daß Verschmutzungen oder Wasser von der Stelle entfernt werden, an der der Infrarotstrahl 12 auf das Metallband 1 trifft. Auf diese Weise wird eine besonders präzise Messung der Temperatur des Metallbandes erreicht.In the Meßkopfen 9 or 14 according to FIG 1 or 2 is vorgese ¬ hen that the infrared beam 12 is incident from the metal strip 1 through the outlet opening 13 the lens. 11 In this way it is achieved that dirt or water is removed from the point at which the infrared beam 12 strikes the metal strip 1. In this way, a particularly precise measurement of the temperature of the metal strip is achieved.
Die Linse 11 bündelt den Infrarotstrahl zur Weiterleitung m einem Glasfaserkabel 10.The lens 11 bundles the infrared beam for transmission in a glass fiber cable 10.
Die Temperaturmeßeinrichtungen mit den Meßkopfen 9 und 14 ge- maß FIG 1 und 2 weisen am Ende der Glasfaserkabel 10 vorteil- hafterweise ein nicht dargestelltes Pyrometer als Aufnehmer auf.The temperature measuring devices with the measuring heads 9 and 14 according to FIGS. 1 and 2 advantageously have a pyrometer (not shown) as a sensor at the end of the glass fiber cables 10.
Ein Ausfuhrungsbeispiel für eine vollständige Temperatur- meßemrichtung m beispielhafter Ausgestaltung und unter Verwendung des erfmdungsgemaßen Prinzips zeigt FIG 3. Dabei bezeichnet Bezugszeichen 30 einen Meßkopf, der m entsprechend abgewandelter Form auch durch entsprechende Ausgestaltungen gemäß FIG 1 oder FIG 2 ersetzt werden kann. Der Meßkopf 30 schwebt aufgrund des aerodynamischen Paradoxons über einem Metallband 1. Vom Metallband 1 ausgestrahltes Infrarotlicht wird in einer Linse 35 gebündelt und über ein Glasfaserkabel 32 einem Pyrometer 36 zugeführt, mittels dessen ein Meßwert für die Temperatur des Metallbandes 1 ermittelt wird. Das Glasfaserkabel 32 ist mit einer Druckluftleitung 33 in einem flexiblen Schutzkabel 34 untergebracht. Über das flexible Schutzkabel 34 werden die Druckluftleitungen 33 und das Glasfaserkabel 32 in ein Schutzgehäuse 38 geführt, das auch das Pyrometer 36 aufnimmt. Mittels der Druckluftleitung 33 wird über einen Druckluftanschluß 37 Druckluft in den Meßkopf 30 geblasen, die über eine Ausflußöffnung 39 auf das Metall- band 1 trifft.FIG. 3 shows an exemplary embodiment of a complete temperature measuring device in an exemplary embodiment and using the principle according to the invention. Reference numeral 30 denotes a measuring head which corresponds to m modified form can also be replaced by corresponding configurations according to FIG 1 or 2. Due to the aerodynamic paradox, the measuring head 30 hovers over a metal strip 1. Infrared light emitted by the metal strip 1 is bundled in a lens 35 and fed via a glass fiber cable 32 to a pyrometer 36, by means of which a measured value for the temperature of the metal strip 1 is determined. The glass fiber cable 32 is accommodated with a compressed air line 33 in a flexible protective cable 34. Via the flexible protective cable 34, the compressed air lines 33 and the glass fiber cable 32 are guided into a protective housing 38, which also accommodates the pyrometer 36. By means of the compressed air line 33, compressed air is blown into the measuring head 30 via a compressed air connection 37, which hits the metal strip 1 via an outflow opening 39.
Die Ausführungsbeispiele gemäß FIG 1 bis 3 beschreiben eine Temperaturmeßeinrichtung, sind jedoch entsprechend auch auf Meßeinrichtungen zur Messung anderer Eigenschaften des Me- tallbandes 1 anwendbar. So kann insbesondere die Oberflächenbeschaffenheit des Metallbandes 1 gemessen werden. Dazu ist das Pyrometer durch ein optisches Auswertegerät, z.B. eine Kamera, zu ersetzen. The exemplary embodiments according to FIGS. 1 to 3 describe a temperature measuring device, but can also be used correspondingly for measuring devices for measuring other properties of the metal strip 1. In particular, the surface quality of the metal strip 1 can be measured. For this purpose, the pyrometer is replaced by an optical evaluation device, e.g. a camera to replace.

Claims

Patentansprüche claims
1. Meßeinrichtung zum berührungslosen Messen von Eigenschaften eines bewegten Metallbandes, insbesondere eines Stahlban- des, wobei die Meßeinrichtung einen parallel zur Oberfläche des Metallbandes anordbaren Saugfuß und eine Blaseinrichtung zum Einblasen von Gas zwischen dem Metallband und dem Saugfuß aufweist, wobei die Blaseinrichtung das Gas derart einblasend ausgebildet ist, daß zwischen dem Metallband und dem Saugfuß das aerodynamische Paradoxon wirksam ist.1. Measuring device for the contactless measurement of properties of a moving metal strip, in particular a steel strip, the measuring device having a squeegee that can be arranged parallel to the surface of the metal strip and a blowing device for blowing gas between the metal strip and the squeegee, the blowing device being the gas in this way is designed to blow in that the aerodynamic paradox is effective between the metal band and the squeegee.
2. Meßeinrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, daß der Saugfuß zumindest eine Gasauslaßöffnung zum Einblasen von Gas zwischen das Metallband und dem Saugfuß aufweist.2. Measuring device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the squeegee has at least one gas outlet opening for blowing gas between the metal strip and the squeegee.
3. Meßeinrichtung nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t, daß sie einen Aufnehmer zum berührungslosen Messen der Eigen- schaften des Metallbandes aufweist, wobei zwischen dem Aufnehmer und der Gasauslaßöffnung ein Meßraum vorgesehen ist, in den das Gas einblasbar ist.3. Measuring device according to claim 1 or 2, so that it has a sensor for contactless measurement of the properties of the metal strip, a measuring space being provided between the sensor and the gas outlet opening, into which the gas can be blown.
4. Meßeinrichtung nach Anspruch 1, 2 und 3, d a d u r c h g e k e n n z e i c h n e t, daß die Meßeinrichtung die Eigenschaften des Metallbandes an der Stelle des Metallbandes messend ausgebildet ist, an der durch die Gasauslaßöffnung Gas auf das Metallband trifft.4. Measuring device according to claim 1, 2 and 3, d a d u r c h g e k e n n z e i c h n e t that the measuring device is designed to measure the properties of the metal strip at the location of the metal strip at which gas hits the metal strip through the gas outlet opening.
5. Meßeinrichtung nach Anspruch 1, 2, 3 und 4, d a d u r c h g e k e n n z e i c h n e t, daß das Gas Luft ist.5. Measuring device according to claim 1, 2, 3 and 4, d a d u r c h g e k e n n z e i c h n e t that the gas is air.
6. Meßeinrichtung nach Anspruch 1, 2, 3, 4 und 5, d a d u r c h g e k e n n z e i c h n e t, daß sie zur Messung der Temperatur des Metallbandes ausgebildet ist. 6. Measuring device according to claim 1, 2, 3, 4 and 5, characterized in that it is designed for measuring the temperature of the metal strip.
7. Meßeinrichtung nach Anspruch 3, 4, 5 und 6, d a d u r c h g e k e n n z e i c h n e t, daß der Aufnehmer ein Temperaturaufnehmer ist.7. Measuring device according to claim 3, 4, 5 and 6, d a d u r c h g e k e n n z e i c h n e t that the sensor is a temperature sensor.
8. Meßeinrichtung nach Anspruch 7, d a d u r c h g e k e n n z e i c h n e t, daß der Aufnehmer ein Pyrometer ist.8. Measuring device according to claim 7, d a d u r c h g e k e n n z e i c h n e t that the sensor is a pyrometer.
9. Meßeinrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß sie zur Messung der Rauhigkeit des Metallbandes ausgebil¬ det ist.9. Measuring device according to one of the preceding claims, characterized in that it is ausgebil ¬ det for measuring the roughness of the metal strip.
10. Meßeinrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß sie zur Messung von Oberflächenfehlern des Metallbandes ausgebildet ist.10. Measuring device according to one of the preceding claims, d a d u r c h g e k e n n z e i c h n e t that it is designed for measuring surface defects of the metal strip.
11. Meßeinrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß der Saugfuß einen Strömungswiderstand an seiner dem Me¬ tallband zugewandten Seite aufweist.11. Measuring device according to one of the preceding claims, characterized in that the suction cup a flow resistance at its the Me ¬ tallband having facing side.
12. Meßeinrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, daß das Metallband durch Flüssigkeiten, Gase oder Staub ver¬ unreinigt ist. 12. Measuring device according to one of the preceding claims, characterized in that the metal strip is ver ¬ contaminated by liquids, gases or dust.
PCT/DE1999/002345 1998-08-11 1999-07-29 Measuring device for contactless measurement of the properties of a moving metal strip WO2000009975A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19836324.9 1998-08-11
DE19836324 1998-08-11
DE19923949A DE19923949A1 (en) 1998-08-11 1999-05-25 Temperature sensor for non-contact measuring of rolled metal band
DE19923949.5 1999-05-25

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WO2000009975A1 true WO2000009975A1 (en) 2000-02-24

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Publication number Priority date Publication date Assignee Title
DE102010038035A1 (en) 2010-10-07 2012-04-12 Rolf Wissner Device for processing workpiece e.g. vacuum chip board, has nozzle rings that are arranged on retaining surface of holder element at acute angle direction, for discharging processed workpiece materials through channel of nozzle ring
DE102010038037A1 (en) 2010-10-07 2012-04-12 Rolf Wissner Device for erosive material machining of workpiece, has workpiece machining channel that penetrates tool holding surface within nozzle rings, and workpiece support operated to support workpiece along surface
CZ305767B6 (en) * 2008-03-07 2016-03-09 Ăšstav termomechaniky AV ÄŚR, v.v.i. Sensing element of liquid-entrained particles or substances

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305767B6 (en) * 2008-03-07 2016-03-09 Ăšstav termomechaniky AV ÄŚR, v.v.i. Sensing element of liquid-entrained particles or substances
DE102010038035A1 (en) 2010-10-07 2012-04-12 Rolf Wissner Device for processing workpiece e.g. vacuum chip board, has nozzle rings that are arranged on retaining surface of holder element at acute angle direction, for discharging processed workpiece materials through channel of nozzle ring
DE102010038037A1 (en) 2010-10-07 2012-04-12 Rolf Wissner Device for erosive material machining of workpiece, has workpiece machining channel that penetrates tool holding surface within nozzle rings, and workpiece support operated to support workpiece along surface

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