DE579378C - Procedure for testing the degree of dryness of liquid impregnating agents - Google Patents

Procedure for testing the degree of dryness of liquid impregnating agents

Info

Publication number
DE579378C
DE579378C DEF71011D DEF0071011D DE579378C DE 579378 C DE579378 C DE 579378C DE F71011 D DEF71011 D DE F71011D DE F0071011 D DEF0071011 D DE F0071011D DE 579378 C DE579378 C DE 579378C
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DE
Germany
Prior art keywords
dryness
degree
testing
paper
procedure
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
DEF71011D
Other languages
German (de)
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk 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 Felten and Guilleaume Carlswerk AG filed Critical Felten and Guilleaume Carlswerk AG
Priority to DEF71011D priority Critical patent/DE579378C/en
Application granted granted Critical
Publication of DE579378C publication Critical patent/DE579378C/en
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/34Paper
    • G01N33/346Paper sheets

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Paper (AREA)

Description

Verfahren zur Prüfung des Trockenheitsgrades flüssiger Imprägniermittel Unter den verschiedenen Arbeitsvorgängen bei der Herstellung von Kabeln mit Papierisolation ist die Trocknung der Isolatiaa einer der wichtigsten. Die heutzutage allgemein übliche Trocknung geschieht in der Weise, daß die isolierten Kabeladern in heizbare Kessel oder Trockenschränke gebracht und die im Papier enthaltene Feuchtigkeit durch die gleichzeitige Anwendung von Wärme und Vakuum entfernt wird. Darauf wird ein flüssiges Imprägniermittel dem Kabiel zugeführt, wobei darauf gesehen werden muß, daß das Imprägniermittel gut entfeuchtet ist.Method for testing the degree of dryness of liquid impregnating agents Among the various operations involved in the manufacture of cables with paper insulation the drying of isolatiaa is one of the most important. The general nowadays The usual drying is done in such a way that the insulated cable cores are heated Brought kettles or drying cabinets and the moisture contained in the paper through the simultaneous application of heat and vacuum is removed. Then a liquid impregnating agent supplied to the cable, whereby attention must be paid to that the impregnating agent is well dehumidified.

Die Erfindung bezieht sich auf ein Verfahren zur Prüfung des Trockenheitsgrades fliissiger Imprägniermittel, wie z. B. des in der Kabeltechnik zum Imprägnieren verwendeten Imprägnieröls.The invention relates to a method for testing the degree of dryness liquid impregnating agents such as B. in the cable technology for impregnation used impregnating oil.

Es ist bekannt, daß ein zu scharfes Trocknen eine Herabsetzung der Falzzahl bewirkt. Es konnte darüber hinaus festgestellt werden, daß überhaupt mit zunehmender Trocknung des Papiers sich dessen Falzzahl in weiten Grenzen ändert. Unter der Falzzahl wird dabei die Anzahl der Biegungen (Falzungen) verstanden, die der zu untersuchende Papierstreifen bis zum Zerreißen aushält, falls er dauernd um dieselbe Stelle :einmal in der einen und darauf in umgekehrter Richtung gebogen wird. Für normales Kabelpapier sinkt die Falzzahl von einem hohen Betrag, der für einige Papiere in lufttrockenem Zustand etwa tausend Falzungen oder darüber beträgt, wo also das Papier .etwa 6 bis 8 % Wasser enthält, mit zunehmendem Trockenheitsgrad des Papiers sehr rasch bis auf den Betrag einiger weniger Falzungen, die das Papier in völlig trockenem Zustande aushält. Eine Imprägnierung mit Öl, Paraffin o. dgl. ändert nichts an der Falzzahl, vorausgesetzt, da.ß diese Tränkmittel selbst völlig frei von Feuchtigkeit sind.It is known that excessive drying reduces the Number of folds effected. It could also be determined that with as the paper dries, the number of folds changes within wide limits. The number of folds is understood to mean the number of bends (folds) that the strip of paper to be examined can withstand tearing, if it is permanent around the same point: bent once in one direction and then in the opposite direction will. For normal cable paper, the number of folds decreases from a large amount that is used for some papers are about a thousand folds or more when air-dry, So where the paper. contains about 6 to 8% water, with increasing degree of dryness of the paper very quickly down to the amount of a few folds that the paper has withstands in a completely dry condition. Impregnation with oil, paraffin or the like. does not change anything in the number of folds, provided that these impregnating agents are completely themselves are free from moisture.

Erfindungsgemäß, wird der Trocknungsgrad flüssiger Imprägniermittel dadurch geprüft, daß die Faizzahl des mit dem zu prüfenden Imprägniermittel getränkten hochgetrockneten Papierstreifens bestimmt wird und hieraus Rückschlüsse auf den Trocknungsgrad des Imprägniermittels gezogen werden. Es wird also zuerst ein gut getrocknetes Papier in das zu prüfende Öl eingetaucht. je nach dem Feuchtigkeitsgehalt des Imprägnierstoffes wird das Papier einen Teil der in dem Imprägniermittel vorhandenen Feuchtigkeit in sich aufnehmen. Wird hierauf die Falzzahl des getränkten Papierstreifens bestimmt, so können aus dem Verhalten bzw. Ansteigen der Falzzahl vor und nach dem Eintauchen des Papiers in den Imprägnierstoff Rückschlüsse auf den Feuchtigkeitsgehalt des Imprägnierstoffes gezogen werden.According to the invention, the degree of dryness of liquid impregnating agents is checked by the fact that the Faizzahl of the impregnating agent to be tested impregnated highly dried paper strip is determined and from this conclusions on the Degree of dryness of the impregnating agent can be drawn. So it will be a good first dried paper immersed in the oil to be tested. depending on the moisture content of the impregnant, the paper becomes part of that present in the impregnant Absorb moisture. This is where the number of folds of the soaked paper strip becomes determined, so can from the behavior or increase in the number of folds before and after Immersing the paper in the impregnating agent draws conclusions about the moisture content of the impregnation material.

Es läßt sich also durch das vorgeschlagene Verfahren für eine bestimmte Papiersorte an Hand von Erfahrungswerten genau feststellen, ob die Trocknimg des flüssigen Imprägniermittels weit genug fortgeschritten ist.It can therefore be through the proposed method for a certain Use empirical values to determine exactly whether the drying of the liquid impregnant has progressed far enough.

Claims (1)

PATENTANSPRUCH: Verfahren zur Prüfung des Trockenheitsgrades flüssiger --Imprägniermittel, dadurch gekennzeichnet, daß, die Falzzahl eines mit dem zu prüfenden Imprägniermittel getränkten Papierstreifens bestimmt wird und hieraus Rückschlüsse auf den Trockenheitsgrad des Imprägniermittels gezogen werden.PATENT CLAIM: Method for testing the degree of dryness of liquids - Impregnation agent, characterized in that the number of folds one with the to be tested Impregnating agent impregnated paper strip is determined and conclusions from this be drawn to the dryness of the impregnation agent.
DEF71011D 1930-04-07 1930-04-08 Procedure for testing the degree of dryness of liquid impregnating agents Expired DE579378C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF71011D DE579378C (en) 1930-04-07 1930-04-08 Procedure for testing the degree of dryness of liquid impregnating agents

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE713836X 1930-04-07
DEF71011D DE579378C (en) 1930-04-07 1930-04-08 Procedure for testing the degree of dryness of liquid impregnating agents

Publications (1)

Publication Number Publication Date
DE579378C true DE579378C (en) 1933-06-24

Family

ID=25946817

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF71011D Expired DE579378C (en) 1930-04-07 1930-04-08 Procedure for testing the degree of dryness of liquid impregnating agents

Country Status (1)

Country Link
DE (1) DE579378C (en)

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