DE677008C - Resistance element for electrical liquid level indicator - Google Patents

Resistance element for electrical liquid level indicator

Info

Publication number
DE677008C
DE677008C DEA76578D DEA0076578D DE677008C DE 677008 C DE677008 C DE 677008C DE A76578 D DEA76578 D DE A76578D DE A0076578 D DEA0076578 D DE A0076578D DE 677008 C DE677008 C DE 677008C
Authority
DE
Germany
Prior art keywords
resistance element
liquid level
resistance
rubber cable
level indicator
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
Application number
DEA76578D
Other languages
German (de)
Inventor
Wilhelm Buengner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
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 AEG AG filed Critical AEG AG
Priority to DEA76578D priority Critical patent/DE677008C/en
Application granted granted Critical
Publication of DE677008C publication Critical patent/DE677008C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22Indicating 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
    • G01F23/24Indicating 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
    • G01F23/241Indicating 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 for discrete levels

Landscapes

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

Description

Widerstandselement für elektrische Flüssigkeitsstandanzeige Für die Anzeige von Flüssigkeitsständen, beispielsweise in Behältern, aber auch bei Differenzdruckmessern u. dgl.,deren Druckdifferenzschenkel mit Quecksilber gefüllt sind, benutzt man in die Flüssigkeit eintauchende Widerstandselemente, die durch die Flüssigkeit mit einem Rückleiter kurzgeschlossen werden, so daß der entsprechend gemessene Widerstand des ganzen Leiters der Höhe des Flüssigkeitsspiegels entspricht. Zur Anzeige von großen Flüssigkeitsständen, beispielsweise in Brunnen oder Bohrlöchern, ist jedoch die Verwendung einfacher Widerstandsdrähte schwer möglich, da diese durch die Flüssigkeit selbst angegriffen werden oder bei Wahl eines geeigneten Werkstoffes keine ausreichende Widerstandsgröße besitzen. Man hat daher bereits besondere Widerstandselemente aus geeignetem Werkstoff aneinandergehängt und an den Verbindungsstellen Kontakte angeordnet, so daß der Widerstand von Stufe zu Stufe je nach der Höhe des Flüssigkeitsspiegels gemessen werden konnte. Derartige Widerstandselemente sind jedoch kompliziert in ihrem Aufbau und bedürfen besondere Kontaktverbindungen.Resistance element for electrical liquid level indicator For the Display of liquid levels, for example in containers, but also with differential pressure gauges and the like, the pressure differential legs of which are filled with mercury, are used in resistance elements immersed in the liquid, which are carried by the liquid with be short-circuited to a return conductor, so that the corresponding measured resistance of the entire conductor corresponds to the height of the liquid level. To display large liquid levels, for example in wells or boreholes, is It is difficult to use simple resistance wires, as these run through the liquid are attacked themselves or, if a suitable material is selected, insufficient Have resistance size. You have therefore already made special resistance elements suitable material attached to one another and contacts arranged at the connection points, so that the resistance from level to level depending on the height of the liquid level could be measured. However, such resistance elements are complicated in their structure and require special contact connections.

Gemäß der Erfindung wird ein zuverlässig wirkendes und einfach herzustellendes -Widerstandselement dadurch geschaffen, daß ein Widerstandsgebilde gemeinsam mit derRückleitttng in einem Gummikabel eingebettet ist. Sowohl das Widerstandsgebilde wie auch die Rückführung weisen in kurzen Abständen blanke, zweckmäßig gegenKorrosion geschützte Herausführungen an der Oberfläche des Gununikabels auf, deren leitende Stromverbind,ung durch den jeweiligen Flüssigkeitsspiegel erfolgt. Durch ein derartiges Widerstandselement erübrigt sich ,auch die Anordnung einer besonderen Rückleitung, die entweder .durch Erde oder ein metallenes Schutzrohr erfolgte.According to the invention, a reliable and easy to manufacture -Resistance element created in that a resistor structure together with the return is embedded in a rubber cable. Both the resistance structure as well as the return, are bare at short intervals, useful against corrosion Protected lead-outs on the surface of the Gununikabel, their conductive Power connection takes place through the respective liquid level. By such a thing Resistance element is unnecessary, also the arrangement of a special return line, which took place either through earth or a metal protective tube.

In der Zeichnung sind ausführliche Beispiele des Erfindungsgegenstandes dargestellt. Abb. i zeigt einen Querschnitt durch ein Kabelstück gemäß der Erfindung, Abb. 2 eine besondere Ausführungsform der äußeren Kontaktstellen am Kabel, Abb. 3 die Anordnung eines Kabels mit Meßvorrichtung in einem Brunnenschacht. Das Widerstandskabel besteht aus einzelnen Widerstandselementen i, die je aus einer oder mehreren Drahtwindungen bestehen können und in gewissen Abständen mit einzelnen Windungen 2 aus dem Kabel herausgeführt sind. Die Stromrückführung erfolgt durch einen Leiter 3, der entsprechend den herausgeführten Windungen 2 Herausführungen 4 erhält. Die Herausführungen 2 und q. des -Widerstandsleiters und des Rückleiters ragen mit blanken Stellen 5 und 6 aus der Gummieinbettung 7 des Kabels heraus. Entsprechend der Höhe des Flüssigkeitsstandes werden, zwischen den Stellen 5 und 6 eine Stromverbindung hergestellt.The drawing shows detailed examples of the subject matter of the invention shown. Fig. I shows a cross section through a piece of cable according to the invention, Fig. 2 a special embodiment of the outer contact points on the cable, Fig. 3 the arrangement of a cable with a measuring device in a well shaft. The resistance cable consists of individual resistance elements i, each consisting of one or more turns of wire can exist and at certain intervals with individual turns 2 from the cable are brought out. The current is returned through a conductor 3, which is accordingly the lead out turns 2 leads out 4 receives. The leads 2 and q. of the resistance conductor and the return conductor protrude with bare points 5 and 6 out of the rubber embedding 7 of the cable. Corresponding the Be the height of the liquid level, between the points 5 and 6 a power connection manufactured.

Zwecks besserer Kontaktgabe können diese Windungen 2 und 4 gänzlich um das Gummikabel herumgeführt sein, oder es können auf das Gummikabel 7- besondere Ringe 8 und 9 aufgesetzt sein, mit denen die Kontaktstellen 5 und 6 unmittelbar verbunden sind. Zwischen den Ringen 8 und 9 befindet sich zweckmäßig noch eine erhöhte Isolierwulst io.For the purpose of better contact, these turns 2 and 4 can be completely around the rubber cable, or it can be on the rubber cable 7-special Rings 8 and 9 should be placed, with which the contact points 5 and 6 directly are connected. Between the rings 8 and 9 there is also an increased one expediently Insulating bead ok

Abb. 3- - zeigt die Anordnung eines derartigen Widerstandskabels in einem Brunnen mit angeschlossenem Anzeigeinstrument. Das Kabel kann j eweils auf die erforderliche Länge zugeschnitten werden, so daß eine leichte Anpassung an verschiedene Flüssigkeitsstände möglich ist. Die Gummischutzkleidung hat den besonderen Vorteil, daß eine Oxydation der Leiter und Widerstände vermieden wird sowie Störungen durch Einfrieren nicht auftreten können. Die Kontaktausführungen, insbesondere die Kontaktringe 8 und 9, werden zweckmäßig aus korrosionssicherem Material hergestellt.Fig. 3- - shows the arrangement of such a resistance cable in a well with a connected display instrument. The cable can in each case be cut to the required length so that it can be easily adapted to different liquid levels. The rubber protective clothing has the particular advantage that oxidation of the conductors and resistors is avoided and interference from freezing cannot occur. The contact designs, in particular the contact rings 8 and 9, are expediently made of corrosion-resistant material.

Claims (3)

PATENTANSPRÜCIIR: I. Widerstandselement für elektrische Flüssigkeitsstandanzeige, dadurch gekennzeichnet, daß eis, Widerstandsgebilde und dessen Rückleitung; die beide gemeinsam in ein Gummikabel eingebettet sind, in kurzen Abständen blanke, zweckmäßig gegen Korrosion geschützte Herausführungen .an der Oberfläche des Gummikabels aufweisen, deren leitende Stromverbindung durch den jeweiligen Flüssigkeitsspiegel erfolgt. PATENT CLAIM: I. Resistance element for electrical liquid level indicator, characterized in that ice, resistance structure and its return line; the both are embedded together in a rubber cable, bare at short intervals, Appropriately protected against corrosion outlets on the surface of the rubber cable have whose conductive current connection through the respective liquid level he follows. 2. Widerstandselement nach Anspruch I, .dadurch gekennzeichnet, daß die Kontaktherausführungen des Widerstandsgebildes .und der Rückleitung mit um das Gummikabel herumgelegte Kontaktringe verbunden sind. 2. Resistance element according to claim I, characterized in that the Contact leads of the resistor structure. And the return line with around the rubber cable laid around contact rings are connected. 3. Widerstandselement nach Anspruch z, dadurch gekennzeichnet, daß das Widerstandsgebilde aus einem fortlaufend gewickelten Draht besteht, von dem Wicklungen in kurzen Abständen an die Oberfläche des ihn und .die Rückleitung einbettenden Gummikabels geführt sind.3. Resistance element according to claim z, characterized in that the resistor structure consists of a continuously wound Wire consists of windings at short intervals on the surface of it and .the return line embedding rubber cable are guided.
DEA76578D 1935-07-19 1935-07-19 Resistance element for electrical liquid level indicator Expired DE677008C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA76578D DE677008C (en) 1935-07-19 1935-07-19 Resistance element for electrical liquid level indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA76578D DE677008C (en) 1935-07-19 1935-07-19 Resistance element for electrical liquid level indicator

Publications (1)

Publication Number Publication Date
DE677008C true DE677008C (en) 1939-06-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEA76578D Expired DE677008C (en) 1935-07-19 1935-07-19 Resistance element for electrical liquid level indicator

Country Status (1)

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DE (1) DE677008C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943695C (en) * 1952-12-09 1956-05-24 Allg Telefon Fabrik G M B H Device for remote electrical water level display, in particular for measuring the depth of ships
DE1036717B (en) * 1952-08-20 1958-08-14 Richard Ehling Electric telemeter for liquid level
DE1798084B1 (en) * 1967-09-11 1972-03-09 Bendix Corp MEASURING DEVICE FOR ELECTRIC LIQUID LEVEL DISPLAY
USRE32019E (en) * 1978-05-26 1985-11-05 Ahi Operations Limited Methods of and/or means for indicating the levels of liquids

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036717B (en) * 1952-08-20 1958-08-14 Richard Ehling Electric telemeter for liquid level
DE943695C (en) * 1952-12-09 1956-05-24 Allg Telefon Fabrik G M B H Device for remote electrical water level display, in particular for measuring the depth of ships
DE1798084B1 (en) * 1967-09-11 1972-03-09 Bendix Corp MEASURING DEVICE FOR ELECTRIC LIQUID LEVEL DISPLAY
USRE32019E (en) * 1978-05-26 1985-11-05 Ahi Operations Limited Methods of and/or means for indicating the levels of liquids

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