WO1994027113A1 - High-temperature travel detector - Google Patents

High-temperature travel detector Download PDF

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Publication number
WO1994027113A1
WO1994027113A1 PCT/EP1994/001467 EP9401467W WO9427113A1 WO 1994027113 A1 WO1994027113 A1 WO 1994027113A1 EP 9401467 W EP9401467 W EP 9401467W WO 9427113 A1 WO9427113 A1 WO 9427113A1
Authority
WO
WIPO (PCT)
Prior art keywords
probe
rod
leaf springs
cooling
interface
Prior art date
Application number
PCT/EP1994/001467
Other languages
German (de)
French (fr)
Inventor
Rainer Gaus
Stefan Zauner
Günther GESELL
Original Assignee
Industrieanlagen-Betriebsgesellschaft Mbh
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
Application filed by Industrieanlagen-Betriebsgesellschaft Mbh filed Critical Industrieanlagen-Betriebsgesellschaft Mbh
Priority to JP6524926A priority Critical patent/JPH09500717A/en
Priority to EP94917589A priority patent/EP0697096A1/en
Publication of WO1994027113A1 publication Critical patent/WO1994027113A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/24—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties

Definitions

  • the invention relates to a device for measuring the deformation of measuring objects, preferably under mechanical and / or thermal loads, in the longitudinal direction of the measuring probe.
  • the range of use of the displacement transducer according to the invention ranges from room temperature to approximately 2300 ° C., the preferred working range is between approximately 700 ° C. and 1800 ° C.
  • the permissible ambient pressure ranges from vacuum to approx. 100 bar; it can be used in all gaseous media; in the case of aggressive media, additional material and construction-related requirements must be met.
  • the state of the art is characterized by displacement sensors which are subject to a drastic restriction: the temperature distribution from the test object to the measurement sensor must be homogeneous and constant.
  • a weakness in the current state of the art is that the probe guide for applications in high temperature ranges, and these have so far only been satisfactorily up to about 800 ° C.
  • no applications of probe materials are known in which the experimental thermal expansion of the probe can be neglected or exactly determined.
  • the aim of the invention is to provide a high-temperature displacement sensor that can also operate under transient temperature conditions, e.g. also provides reliable measurement results in the heating phase, and which also works in significantly higher temperature ranges, namely up to approx. 2300 ° C, and which can be used from vacuum to approx. 100 bar regardless of the atmospheric pressure.
  • a quartz glass rod is used as probe 1; In the area of high temperatures, special quartz glasses are recommended, e.g. from the company Raesch, Geesthacht. Cooling of the quartz glass rod is necessary above a continuous temperature of approximately 1400 ° C. This can be done through channels inside the rod through which gaseous or liquid coolants are passed.
  • tip 2 of the quartz glass rod a material with even better high-temperature properties is required, e.g. Sapphire because it has a high transmission coefficient and low thermal conductivity.
  • the sapphire is glued to the lower end of the quartz rod with a high-temperature adhesive, preferably on a ceramic basis.
  • the measurement signals are generated by an inductive displacement transducer of a known type.
  • the requirement must be met in terms of construction that the plunger anchor 4 is guided in the coil housing 5 without contact in order to prevent heat conduction effects from the plunger anchor 4 onto the coil housing 5 and to minimize heat transfer effects.
  • This contact-free guidance in which only very slight lateral deviations are permitted, is implemented as follows:
  • the plunger anchor 4 sits firmly on a rod 6 made of non-magnetic material, which forms the straight extension of the measuring probe 1 (FIG. 1).
  • This rod 6 is mounted and guided in a resilient bracket above and below the cooling housing 11.
  • the two lower springs 9b have a hole 10 in the center through which the rod 6 is guided, they are firmly connected to the button guide frame 7 (FIGS. 2 and 3). This type of suspension requires the probe tip to be pressed against the sample.
  • leaf springs 9 are also possible in such a way that, for example, the two inner springs are firmly connected to the rod 6, and the respective outer leaf springs have the bore for the rod 6 and are fixed to the key guide frame 7, or the other way around.
  • This arrangement is advantageous, for example, when the tip of the measuring probe 1 is connected to the sample, for example by gluing with high-temperature adhesives on a ceramic basis.
  • FIG. 5 shows another variant of the resilient rod guide, which has the advantage of a particularly flat, space-saving design:
  • a board 19 preferably made of spring steel, slots are punched in such a way that two spring tongues 20 and 21 acting in opposite directions are created as the functional principle.
  • the rod 6 is fixed in point A, the board on the push button guide frame in points B. If the ratio of l ⁇ : I 2 and Si: S 2 (1: 2) is correct, the rod guide is very rigid against lateral bending movements.
  • the coil housing 5 is cooled, preferably by water cooling. Further is
  • a radiation shield 22 is provided between the surface of the measurement object 28 and the interface 14.
  • cooling housing 11 is provided with channels for the coolant or whether the cooling by heat conduction to the water-cooled fastening linkage 13 with its cooling channels 3 is sufficient or whether air cooling with cooling fins is sufficient depends on the intended use.
  • the connection of the probe 1 to the rod 6 takes place via an interface 14 which is designed in such a way that the heat transfer from 1 to 6 is as low as possible.
  • the interface 14 is designed in such a way that the probe 1 is housed in a heat-insulating sleeve 15, e.g. made of Teflon.
  • the measuring probe 1 has gold sputtering at its upper end in order to reflect heat radiation inside the rod.
  • the probe l must be clamped in the interface because of the different thermal expansion of the materials used. Therefore, a ball 16 is pressed with a screw 17 resiliently via a spring 23 into a notch 18 which is located in the measuring rod 1 (FIG. 4).
  • a fine adjustment 27 e.g. screw
  • FIG. 1 and FIG. 3 In order to simplify the handling of the displacement transducer and to keep the initial conditions reproducible, it is advisable to provide a button lock 25 and a device for rough start-up 26 (e.g. sledge).
  • a fine adjustment 27 e.g. screw
  • the induction voltage generated by the plunger 4 in the coil housing 5 is amplified in a known manner and e.g. logged via data logger.
  • the temperature distribution from the probe tip 2 to the plunger armature coil 4 may be inhomogeneous and that the type of construction, the material selection and the cooling of the plunger armature 4 ent ⁇ holding housing the working range from room temperature to
  • REPLACEMENT BUTT (RULE 26) approx. 1800 ° C is sufficient and measurements up to peak temperatures of approx. 2300 ° C are still possible.
  • Many components are commercially available or simple to manufacture, so that the displacement transducer according to the invention is very inexpensive to manufacture. It is also light, portable, robust and easy to use, and it can be used under any installation angle.

Abstract

The subject of the invention is a measuring device for the unidimensional measurement of the thermally and/or mechanically caused deformation of strongly heated objects to be measured. Essentially, the working range extends from room temperature to about 2300 °C, while the usual working range lies between room temperature and 1800 °C. The high-temperature travel detector of the invention consists of commercially available and easily made components, it is economical, easily portable, reliable, robust and can be used at any angle.

Description

Hochtemperatur-Wegaufnehmer High temperature displacement sensor
Die Erfindung betrifft eine Vorrichtung zum Messen der Ver¬ formung von Meßobjekten, vorzugsweise unter mechanischen und/oder thermischen Belastungen, in Längsrichtung des Meßta¬ sters. Der Einsatzbereich des erfindungsgemäßen Wegaufnehmers reicht von Raumtemperatur bis ca. 2300°C, der bevorzugte Ar¬ beitsbereich liegt zwischen ca. 700°C und 1800°C. Der zu¬ lässige Umgebungsdruck reicht vom Vakuum bis ca. 100 bar; der Einsatz ist in allen gasförmigen Medien möglich, bei aggres¬ siven Medien müssen zusätzliche material- und konstruktions- bezogene Anforderungen erfüllt werden.The invention relates to a device for measuring the deformation of measuring objects, preferably under mechanical and / or thermal loads, in the longitudinal direction of the measuring probe. The range of use of the displacement transducer according to the invention ranges from room temperature to approximately 2300 ° C., the preferred working range is between approximately 700 ° C. and 1800 ° C. The permissible ambient pressure ranges from vacuum to approx. 100 bar; it can be used in all gaseous media; in the case of aggressive media, additional material and construction-related requirements must be met.
Der Stand der Technik ist gekennzeichnet durch Wegaufnehmer, die einer einschneidenden Restriktion unterliegen: Die Tempe¬ raturverteilung von Meßobjekt bis Meßaufnehmer muß homogen und konstant sein. Eine Schwäche beim derzeitigen Stand der Technik ist, daß die Meßtasterführung für Einsätze in hohen Temperaturbereichen, und diese reichen bisher nur bis ca. 800°C, nicht zufriedenstellend gelöst ist. Außerdem sind keine Anwendungen von Meßtastmaterialien bekannt, bei denen die versuchsbedingte thermische Ausdehnung der Meßtaster ver¬ nachlässigt oder exakt bestimmt werden kann.The state of the art is characterized by displacement sensors which are subject to a drastic restriction: the temperature distribution from the test object to the measurement sensor must be homogeneous and constant. A weakness in the current state of the art is that the probe guide for applications in high temperature ranges, and these have so far only been satisfactorily up to about 800 ° C. In addition, no applications of probe materials are known in which the experimental thermal expansion of the probe can be neglected or exactly determined.
Ziel der Erfindung ist es, einen Hochtemperatur-Wegaufnehmer bereitzustellen, der auch unter transienten Temperaturbedin- gungen, also z.B. auch in der Aufheizphase, zuverlässige Meßergebnisse liefert, und der ferner in deutlich höheren Temperaturbereichen, nämlich bis ca. 2300°C arbeitet, und der vom Vakuum bis ca. 100 bar unabhängig vom atmosphärischen Druck einsetzbar ist.The aim of the invention is to provide a high-temperature displacement sensor that can also operate under transient temperature conditions, e.g. also provides reliable measurement results in the heating phase, and which also works in significantly higher temperature ranges, namely up to approx. 2300 ° C, and which can be used from vacuum to approx. 100 bar regardless of the atmospheric pressure.
ERSATZBLÄΓΓ (REGEL 26) Diese Aufgabe wird erfindungsgemäß wie folgt gelöst:SPARE BLADES (RULE 26) According to the invention, this object is achieved as follows:
Als Meßtaster 1 wird ein Quarzglasstab verwendet; im Bereich hoher Temperaturen empfehlen sich spezielle Quarzgläser, z.B. der Firma Raesch, Geesthacht. Oberhalb von ca. 1400°C Dauer¬ temperatur ist eine Kühlung des Quarzglasstabes erforderlich. Diese kann durch Kanäle im Inneren des Stabes erfolgen, durch die gasförmige oder flüssige Kühlmittel geleitet werden. Als Spitze 2 des Quarzglasstabes ist ein Material mit noch besse- ren Hochtemperatureigenschaften erforderlich, z.B. Saphir, weil dieser einen hohen Transmissionskoeffizienten und eine geringe Wärmeleitfähigkeit hat. Der Saphir ist mit einem Hochtemperaturkleber, vorzugsweise auf keramischer Basis, auf das untere Ende des Quarzstabes aufgeklebt.A quartz glass rod is used as probe 1; In the area of high temperatures, special quartz glasses are recommended, e.g. from the company Raesch, Geesthacht. Cooling of the quartz glass rod is necessary above a continuous temperature of approximately 1400 ° C. This can be done through channels inside the rod through which gaseous or liquid coolants are passed. As tip 2 of the quartz glass rod, a material with even better high-temperature properties is required, e.g. Sapphire because it has a high transmission coefficient and low thermal conductivity. The sapphire is glued to the lower end of the quartz rod with a high-temperature adhesive, preferably on a ceramic basis.
Die Meßsignale werden von einem induktiven Wegaufnehmer be¬ kannter Bauart erzeugt. Jedoch muß die Forderung konstruktiv erfüllt sein, daß der Tauchanker 4 berührungsfrei in dem Spu- lengehäuεe 5 geführt ist, um Wärmeleitungseffekte vom Tauch- anker 4 auf das Spulengehäuse 5 zu verhindern und um Wärme¬ übertragungseffekte zu minimieren. Diese berührungsfreie Füh¬ rung, bei der nur sehr geringe Seitenabweichungen zulässig sind, wird wie folgt realisiert:The measurement signals are generated by an inductive displacement transducer of a known type. However, the requirement must be met in terms of construction that the plunger anchor 4 is guided in the coil housing 5 without contact in order to prevent heat conduction effects from the plunger anchor 4 onto the coil housing 5 and to minimize heat transfer effects. This contact-free guidance, in which only very slight lateral deviations are permitted, is implemented as follows:
Der Tauchanker 4 sitzt fest auf einem Stab 6 aus nichtmagne¬ tischem Material, der die geradlinige Verlängerung des Meßta¬ sters 1 bildet (Figur 1) . Dieser Stab 6 ist oberhalb und un¬ terhalb des Kühlgehäuses 11 in je einer federnden Halterung gelagert und geführt. Zwei Blattfederpaare, deren Blattfedern 9a und 9b jeweils paarweise konkav zu konvex angeordnet sind, bilden die Stabführung 8 (Figur 3) , wobei die beiden oberen Blattfedern 9a jeweils fest mit dem Stab 6 verbunden sind. Die beiden unteren Federn 9b weisen mittig eine Bohrung 10 auf, durch die der Stab 6 geführt ist, sie sind mit dem Ta- sterführungsrahmen 7 fest verbunden (Figuren 2 und 3) . Diese Art der Aufhängung bedingt einen Anpreßdruck der Meßtaster- spitze auf die Probe.The plunger anchor 4 sits firmly on a rod 6 made of non-magnetic material, which forms the straight extension of the measuring probe 1 (FIG. 1). This rod 6 is mounted and guided in a resilient bracket above and below the cooling housing 11. Two pairs of leaf springs, the leaf springs 9a and 9b of which are arranged in pairs concave to convex, form the rod guide 8 (FIG. 3), the two upper leaf springs 9a each being firmly connected to the rod 6. The two lower springs 9b have a hole 10 in the center through which the rod 6 is guided, they are firmly connected to the button guide frame 7 (FIGS. 2 and 3). This type of suspension requires the probe tip to be pressed against the sample.
ERSATZBLATΓ(REGEL26) Es ist jedoch auch eine andere Anordnung der Blattfedern 9 in der Weise möglich, daß z.B. die beiden innenliegenden Federn mit dem Stab 6 fest verbunden sind, und die jeweils äußeren Blattfedern die Bohrung für den Stab 6 aufweisen und am Ta- sterführungsrahmen 7 fixiert sind, oder umgekehrt. Diese An¬ ordnung ist z.B. dann vorteilhaft, wenn die Spitze des Meßta¬ sters 1 mit der Probe verbunden ist, beispielsweise durch Klebung mit Hochtemperaturklebern auf keramischer Basis.SPARE BLADEBL (RULE26) However, another arrangement of the leaf springs 9 is also possible in such a way that, for example, the two inner springs are firmly connected to the rod 6, and the respective outer leaf springs have the bore for the rod 6 and are fixed to the key guide frame 7, or the other way around. This arrangement is advantageous, for example, when the tip of the measuring probe 1 is connected to the sample, for example by gluing with high-temperature adhesives on a ceramic basis.
Eine weitere Variante der federnden Stabführung, die den Vor¬ teil einer besonders flachen, raumsparenden Bauart hat, zeigt Figur 5:FIG. 5 shows another variant of the resilient rod guide, which has the advantage of a particularly flat, space-saving design:
In eine Platine 19, vorzugsweise aus Federstahl, sind Schlitze so eingestanzt, daß als Funktionsprinzip zwei gegen¬ läufig wirkende Federzungen 20 und 21 entstehen. Der Stab 6 ist im Punkt A, die Platine am Tasterführungsrahmen in den Punkten B fixiert. Bei richtigem Verhältnis von lχ : I2 und Si : S2 (1 : 2) ist eine gegen seitliche Biegebewegungen sehr steife zentrische Stabführung gegeben.In a board 19, preferably made of spring steel, slots are punched in such a way that two spring tongues 20 and 21 acting in opposite directions are created as the functional principle. The rod 6 is fixed in point A, the board on the push button guide frame in points B. If the ratio of lχ: I 2 and Si: S 2 (1: 2) is correct, the rod guide is very rigid against lateral bending movements.
Zur Funktionsweise der federnden Aufhängung:How the spring suspension works:
Wenn der Meßtaster 1 und damit der Stab 6 in Längsrichtung verschoben wird, wird diese Meßbewegung vom Stab 6 über die Ankopplung 12 auf die jeweils oberen Blattfedern 9a und über die jeweils unteren Blattfedern 9b auf den ortsfesten Taster- führuήgsrahmen 7 übertragen, ohne daß der Stab 6 eine Seit¬ wärtsverschiebung erfährt. Aus Stabilitätsgründen ist es zweckmäßig, das obere und das untere Blattfedernpaar um 90° gegeneinander zu versetzen. Ferner empfiehlt es sich, die Blattfedernpaare gegen den Tasterführungsrahmen um jeweils 45° zu versetzen, um die Blattfedern 9 in genügender Länge bei kompakter Gerätebauweiεe ausbilden zu können.If the probe 1 and thus the rod 6 is moved in the longitudinal direction, this measuring movement is transmitted from the rod 6 via the coupling 12 to the respective upper leaf springs 9a and via the lower leaf springs 9b to the stationary probe guide frame 7 without the rod 6 undergoes a lateral shift. For reasons of stability, it is advisable to offset the upper and lower pair of leaf springs by 90 °. Furthermore, it is advisable to offset the pairs of leaf springs against the push button guide frame by 45 ° in each case in order to be able to form the leaf springs 9 in sufficient length with a compact device construction.
Um den Tauchanker 4 und das Spulengehäuse 5 auf konstanter und niedriger Temperatur zu halten, ist das Spulengehäuse 5 gekühlt, vorzugsweiεe durch eine Wasserkühlung. Ferner istIn order to keep the plunger armature 4 and the coil housing 5 at a constant and low temperature, the coil housing 5 is cooled, preferably by water cooling. Further is
ERSATZBUTT (REGEL 26) zwischen der Oberfläche des Meßobjektes 28 und dem Interface 14 eine Strahlungsblende 22 vorgesehen.REPLACEMENT BUTT (RULE 26) A radiation shield 22 is provided between the surface of the measurement object 28 and the interface 14.
Ob das Kühlgehäuse 11 mit Kanälen für das Kühlmittel versehen ist oder ob die Kühlung durch Wärmeleitung zum wassergekühl¬ ten Befestigungsgestänge 13 mit dessen Kühlkanälen 3 aus¬ reicht oder ob Luftkühlung mit Kühlrippen ausreichend ist, hängt vom Einsatzzweck ab.Whether the cooling housing 11 is provided with channels for the coolant or whether the cooling by heat conduction to the water-cooled fastening linkage 13 with its cooling channels 3 is sufficient or whether air cooling with cooling fins is sufficient depends on the intended use.
Die Verbindung des Meßtasters 1 mit dem Stab 6 erfolgt über ein Interface 14, das so ausgebildet ist, daß die Wärmeüber¬ tragung von 1 auf 6 möglichεt gering ist. Dazu wird das In¬ terface 14 so gestaltet, daß der Meßtaster 1 in einer wär- meisolierenden Hülse 15, z.B. aus Teflon, geführt wird. Der Meßtaster 1 weist an seinem oberen Ende eine Goldsputterung auf, um Wärmestrahlungen im Stabinneren zu reflektieren. Die Einspannung des Meßtasters l in das Interface muß wegen der unterschiedlichen Wärmeausdehnung der verwendeten Materialien elastisch erfolgen. Deshalb wird eine Kugel 16 mit einer Schraube 17 über eine Feder 23 federnd in eine Kerbe 18, die sich im Meßstab 1 befindet, gedrückt (Figur 4) .The connection of the probe 1 to the rod 6 takes place via an interface 14 which is designed in such a way that the heat transfer from 1 to 6 is as low as possible. For this purpose, the interface 14 is designed in such a way that the probe 1 is housed in a heat-insulating sleeve 15, e.g. made of Teflon. The measuring probe 1 has gold sputtering at its upper end in order to reflect heat radiation inside the rod. The probe l must be clamped in the interface because of the different thermal expansion of the materials used. Therefore, a ball 16 is pressed with a screw 17 resiliently via a spring 23 into a notch 18 which is located in the measuring rod 1 (FIG. 4).
Um die Handhabung des Wegaufnehmers zu vereinfachen und um die Anfangsbedingungen reproduzierbar zu halten, empfiehlt es sich, eine Tasterarretierung 25 sowie eine Vorrichtung zum Grobanfahren 26 (z.B. Schlitten) vorzusehen. Eine Feinein¬ stellung 27 (z.B. Schraube), ermöglicht die mechanische Null- punkteinεtellung (Figur 1 und Figur 3) .In order to simplify the handling of the displacement transducer and to keep the initial conditions reproducible, it is advisable to provide a button lock 25 and a device for rough start-up 26 (e.g. sledge). A fine adjustment 27 (e.g. screw) enables the mechanical zero point adjustment (FIG. 1 and FIG. 3).
Die vom Tauchanker 4 im Spulengehäuse 5 erzeugte Induktions¬ spannung wird in bekannter Weise verstärkt und z.B. über Me߬ wertschreiber protokolliert.The induction voltage generated by the plunger 4 in the coil housing 5 is amplified in a known manner and e.g. logged via data logger.
Als besondere Vorteile des erfindungsgemäßen Hochtemperatur- Wegaufnehmers ist zu erwähnen, daß die Temperaturverteilung von der Meßtasterεpitze 2 bis zur Tauchankerspule 4 inhomogen sein darf und daß durch die Art des Aufbaus, durch die Mate¬ rialauswahl ..nd durch die Kühlung des den Tauchanker 4 ent¬ haltenden Gehäuseε der Arbeitεbereich von Raumtemperatur bisAs special advantages of the high-temperature displacement transducer according to the invention it should be mentioned that the temperature distribution from the probe tip 2 to the plunger armature coil 4 may be inhomogeneous and that the type of construction, the material selection and the cooling of the plunger armature 4 ent ¬ holding housing the working range from room temperature to
ERSATZBUTT(REGEL26) ca. 1800°C reicht und Messungen bis Spitzentemperaturen von ca. 2300°C noch möglich sind. Viele Bauteile sind handelsüb¬ lich oder einfach zu fertigen, so daß der erfindungsgemäße Wegaufnehmer sehr preiεwert herzustellen ist. Er iεt ferner leicht, gut tranεportabel, robuεt und leicht zu bedienen, und er kann unter jedem Einbauwinkel eingesetzt werden. REPLACEMENT BUTT (RULE 26) approx. 1800 ° C is sufficient and measurements up to peak temperatures of approx. 2300 ° C are still possible. Many components are commercially available or simple to manufacture, so that the displacement transducer according to the invention is very inexpensive to manufacture. It is also light, portable, robust and easy to use, and it can be used under any installation angle.

Claims

Patentansprüche Claims
1. Vorrichtung zum eindimensionalen Mesεen der Verformung von thermisch hochbelasteten Meßobjekten in Längεrichtung deε Meßtasters im Einsatzbereich von Raumtemperatur bis ca. 2300°C, vorzugsweise im Arbeitsbereich von 700°C bis 1800°C, gekennzeichnet durch die Kombination folgender Merkmale:1. Device for one-dimensional measurement of the deformation of thermally highly loaded measuring objects in the longitudinal direction of the probe in the range from room temperature to approx. 2300 ° C, preferably in the working range from 700 ° C to 1800 ° C, characterized by the combination of the following features:
- Zur Bewegungsaufnahme ist ein Meßtaster (1) , vorzugs- weiεe aus Quarzglas, vorhanden.- A probe (1), preferably made of quartz glass, is available for recording movement.
- Ein Stab (6) aus nichtmagnetischem Material mit daran befestigtem Tauchanker (4) ist über ein Interface (14) in gerader Linie mit dem Meßtaster (1) verbunden.- A rod (6) made of non-magnetic material with a plunger anchor (4) attached to it is connected in a straight line to the probe (1) via an interface (14).
- Der Tauchanker (4) ist in Längsrichtung des Stabes (6) berührungsloε in einem Spulengehäuεe (5) bewegbar.- The immersion anchor (4) can be moved in the longitudinal direction of the rod (6) without contact in a coil housing (5).
- Eε sind wenigstens zwei federnde Stabführungen (8) , bestehend aus wenigstens zwei konkav gegen konvex ange¬ ordneten Blattfedern (9a, 9b) vorhaden.- There are at least two resilient rod guides (8) consisting of at least two leaf springs (9a, 9b) arranged concavely against convexly.
- Aus jeder Stabführung (8) ist die jeweils obere Blatt¬ feder (9a) mit dem Stab (6) fest verbunden, die jeweils untere Blattfeder (9b) weist eine Bohrung (10) zur freien Durchführung deε Stabes (6) auf und iεt feεt mit dem Tasterführungsrahmen (7) verbunden (Figur 2) .- The upper leaf spring (9a) is firmly connected to the rod (6) from each rod guide (8), the lower leaf spring (9b) in each case has a bore (10) for the free passage of the rod (6) and is firmly connected to the push button guide frame (7) (Figure 2).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Meßtaster (1) vorzugsweise in Längsrichtung ver¬ laufende Kühlkanäle aufweist.2. Apparatus according to claim 1, characterized in that the probe (1) preferably has cooling ducts running in the longitudinal direction.
ERSATZBUTT(REGEL26) REPLACEMENT BUTT (RULE 26)
3. Vorrichtung nach Anspruch l, dadurch gekennzeichnet, daß die Spitze (2) des Meßtasters (1) aus einem Material mit höherer Thermoviεkoεitätεgrenze als Quarzglas, vor¬ zugsweise aus Saphir, besteht.3. Apparatus according to claim l, characterized in that the tip (2) of the probe (1) consists of a material with a higher Thermoviεkoεitätε Limit than quartz glass, preferably sapphire.
4. Vorrichtung nach den Ansprüchen 1 und 3, dadurch gekenn¬ zeichnet, daß die Meßtasterspitze (2) mit Hochtemperatur¬ klebern, vorzugsweise auf keramischer Basis, aufgeklebt ist.4. Device according to claims 1 and 3, characterized gekenn¬ characterized in that the probe tip (2) with high temperature glue, preferably on a ceramic basis, is glued.
5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Meßstab (1) an seinem oberen Ende abgeflacht und mit einer reflektierenden Schicht, vorzugsweise mit einer Goldsputterung, verεehen iεt.5. The device according to claim 1, characterized in that the dipstick (1) flattened at its upper end and verεehen with a reflective layer, preferably with a gold sputtering.
6. Vorrichtung nach Anεpruch 1, dadurch gekennzeichnet, daß die Blattfedern 9a und 9b in der Stabführung (8) so angeordnet εind, daß die beiden Blattfedern (9a) im Weg¬ aufnehmer innenliegend εind, die Blattfedern (9b) außen- liegend.6. Device according to claim 1, characterized in that the leaf springs 9a and 9b are arranged in the rod guide (8) in such a way that the two leaf springs (9a) in the displacement sensor are on the inside, the leaf springs (9b) are on the outside.
7. Vorrichtung nach den Anεprüchen l und 6, dadurch gekenn¬ zeichnet, daß die beiden Blattfedern (9a) außenliegend, die Blattfedern (9b) innenliegend angeordnet sind.7. Device according to claims 1 and 6, characterized in that the two leaf springs (9a) are on the outside, the leaf springs (9b) are on the inside.
8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als längsführende Federelemente wenigstenε zwei Platinen (19) , vorzugεweise aus Federstahl, mit einer innenliegen¬ den federnden Zunge (20) und einer gegenläufig die Zunge (20) umschließenden federnden Zunge (21) eingesetzt wer¬ den (Figur 5) .8. The device according to claim 1, characterized in that at least two plates (19), preferably made of spring steel, are used as longitudinal spring elements, with an inner tongue (20) and a tongue (20) enclosing the tongue (20) in the opposite direction become (Figure 5).
9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Spulengehäuse (5) von einem Kühlgehäuse (11) mit Kühlmittelkanälen umgeben ist.9. The device according to claim 1, characterized in that the coil housing (5) is surrounded by a cooling housing (11) with coolant channels.
10. Vorrichtung nach den Ansprüchen 1 und 9, dadurch gekenn¬ zeichnet, daß das Kühlgehäuse (11) mit Kühlrippen für Luftkühlung versehen ist. 10. Device according to claims 1 and 9, characterized gekenn¬ characterized in that the cooling housing (11) is provided with cooling fins for air cooling.
11. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Interface (14) eine wärmeisolierende Hülse (15) , vor¬ zugsweise aus Teflon, zur Führung des Meßtasters (1) auf¬ weist.11. The device according to claim 1, characterized in that the interface (14) has a heat-insulating sleeve (15), preferably made of Teflon, for guiding the probe (1).
12. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zum Fixieren deε Meßtaεterε (1) im Interface (14) der Meßstab (1) eine Vertiefung, vorzugsweiεe eine Kerbe (18) , aufweist, in die eine Kugel (16) tangential ein- greift, die von einer einstellbaren Schraube (17) über ein federndes Element, vorzugsweise eine zylindrische Schraubenfeder (23), angedrückt wird (Figur 4).12. The device according to claim 1, characterized in that for fixing the measuring probe (1) in the interface (14) of the measuring rod (1) has a recess, preferably a notch (18), into which a ball (16) tangentially one engages, which is pressed by an adjustable screw (17) via a resilient element, preferably a cylindrical coil spring (23) (Figure 4).
13. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß daε Befeεtigungεgeεtänge (19) Kanäle (3) für den13. The apparatus according to claim 1, characterized in that daε Befeεtigungεgeεtänge (19) channels (3) for the
Durchlauf von Kühlmitteln aufweist.Passage of coolants.
14. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Tasterarretierung (25) vorhanden ist.14. The apparatus according to claim 1, characterized in that a button lock (25) is present.
15. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Vorrichtung zum Grobanfahren (26) vorhanden ist.15. The apparatus according to claim 1, characterized in that a device for rough starting (26) is present.
16. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Feineinstellung (27) vorhanden ist.16. The apparatus according to claim 1, characterized in that a fine adjustment (27) is available.
17. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zwischen Meßobjekt (28) und dem Interface (14) eine Strahlungsblende (22) vorhanden ist.17. The apparatus according to claim 1, characterized in that a radiation shield (22) is present between the test object (28) and the interface (14).
ERSATZBUTT(REGEL26) REPLACEMENT BUTT (RULE 26)
PCT/EP1994/001467 1993-05-08 1994-05-06 High-temperature travel detector WO1994027113A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6524926A JPH09500717A (en) 1993-05-08 1994-05-06 High temperature dilatometer
EP94917589A EP0697096A1 (en) 1993-05-08 1994-05-06 High-temperature travel detector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4315388.7 1993-05-08
DE19934315388 DE4315388C1 (en) 1993-05-08 1993-05-08 High temp. displacement indicator for thermal deformation measurement - uses quartz glass measuring element contacting measured object and inductive measuring system

Publications (1)

Publication Number Publication Date
WO1994027113A1 true WO1994027113A1 (en) 1994-11-24

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ID=6487594

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/001467 WO1994027113A1 (en) 1993-05-08 1994-05-06 High-temperature travel detector

Country Status (4)

Country Link
EP (1) EP0697096A1 (en)
JP (1) JPH09500717A (en)
DE (1) DE4315388C1 (en)
WO (1) WO1994027113A1 (en)

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Publication number Priority date Publication date Assignee Title
CN104827008A (en) * 2015-05-19 2015-08-12 大连华锐重工集团股份有限公司 Temperature displacement coupling device for real-time monitoring of crystallizer copper plate in on-line mode

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US3680357A (en) * 1970-09-21 1972-08-01 Gerhard R Clusener Dilatometer
US3748892A (en) * 1972-04-18 1973-07-31 Us Air Force High precision dilatometer
DE2331113B1 (en) * 1973-06-19 1974-02-07 W.C. Heraeus Gmbh, 6450 Hanau Dilatometer
SU549720A2 (en) * 1973-01-15 1977-03-05 Предприятие П/Я Г-4126 Differential dilatometer
EP0273666A2 (en) * 1986-12-22 1988-07-06 Atomic Energy of Canada Limited L'Energie Atomique du Canada Limitée Extensometer
NL8700084A (en) * 1987-01-15 1988-08-01 Euratom Deformation test apparatus for high temp. ceramics - has cooled transducers which measure flexing of sample under load

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DE1300305C2 (en) * 1967-09-15 1974-05-02 Spinner, Dr.-Ing. Georg, 8000 München ELECTRONIC PRECISION DEVICE FOR MEASURING AND MONITORING MECHANICAL SIZES

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US3680357A (en) * 1970-09-21 1972-08-01 Gerhard R Clusener Dilatometer
US3748892A (en) * 1972-04-18 1973-07-31 Us Air Force High precision dilatometer
SU549720A2 (en) * 1973-01-15 1977-03-05 Предприятие П/Я Г-4126 Differential dilatometer
DE2331113B1 (en) * 1973-06-19 1974-02-07 W.C. Heraeus Gmbh, 6450 Hanau Dilatometer
EP0273666A2 (en) * 1986-12-22 1988-07-06 Atomic Energy of Canada Limited L'Energie Atomique du Canada Limitée Extensometer
NL8700084A (en) * 1987-01-15 1988-08-01 Euratom Deformation test apparatus for high temp. ceramics - has cooled transducers which measure flexing of sample under load

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Publication number Priority date Publication date Assignee Title
CN104827008A (en) * 2015-05-19 2015-08-12 大连华锐重工集团股份有限公司 Temperature displacement coupling device for real-time monitoring of crystallizer copper plate in on-line mode

Also Published As

Publication number Publication date
JPH09500717A (en) 1997-01-21
DE4315388C1 (en) 1994-06-16
EP0697096A1 (en) 1996-02-21

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