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DE425051C - Process for preserving the oil in oil boilers of electrical apparatus - Google Patents

Process for preserving the oil in oil boilers of electrical apparatus

Info

Publication number
DE425051C
DE425051C DEM84860D DEM0084860D DE425051C DE 425051 C DE425051 C DE 425051C DE M84860 D DEM84860 D DE M84860D DE M0084860 D DEM0084860 D DE M0084860D DE 425051 C DE425051 C DE 425051C
Authority
DE
Germany
Prior art keywords
oil
electrical apparatus
preserving
boilers
borax
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
DEM84860D
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle 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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of DE425051C publication Critical patent/DE425051C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
    • H01B3/22—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils hydrocarbons

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Transformer Cooling (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Description

Verfahren zur Konservierung des Öles'in Ölkesseln elektrischer Apparate. Ein großer Nachteil des z. B. für Öltransformatoren zur Verwendung gelangenden Mineralöles besteht bekanntlich in seiner Neigung, sich zu oxydieren und zu polymerisieren, wobei saure und stark gefärbte asphaltartige Stoffe entstehen, die zum Teil als Schlamm ausfallen. Durch alkalische Zusätze, z. B. NaOH, fest oder in alkalischer Lösung, Ca0' usw., wurde versucht, den Vorgang aufzuhalten bzw. die sauren Oxydationsprodukte vorweg zu neutralisieren und somit unschädlich zu machen: -Es zeigte sich aber, daß diese Zusätze das Öl direkt angreifen. Die Säurebildung wird allerdings unterdrückt; dafür setzt eine verstärkte Schlammbildung ein.Process for preserving oil in oil boilers in electrical equipment. A big disadvantage of z. B. for oil transformers used mineral oil is known to have a tendency to oxidize and polymerize, whereby acidic and strongly colored asphalt-like substances are created, some of which are used as Fall out mud. By alkaline additives, e.g. B. NaOH, solid or in alkaline Solution, Ca0 ', etc., an attempt was made to stop the process or the acidic oxidation products to neutralize in advance and thus render harmless: -But it turned out that that these additives attack the oil directly. The formation of acid is, however, suppressed; an increased sludge formation sets in for this.

Es hat sich nun gezeigt, daß im Borax ein Mittel gegeben ist, das, ohne das Öl selbst anzugreifen, die gebildeten Säuren größtenteils neutralisiert und somit die Brauchbarkeit des Öles wesentlich verlängert. Bei der gewöhnlichen »prismatischen« Form Na2B,0, io H20 ist die Wirksamkeit nur gering. Viel günstiger verhält sich die »oktaedrische« Form Na2B40, -i- 5 H20, wie sie aus heiß gesättigten Lösungen beim Abkühlen auskristallisiert. Wird dieses Salz dem Öl zugesetzt, derart, daß es dem letzteren eine möglichst große Oberfläche darbietet, so wird sowohl die Versätrerung wie die Dunkelfärbung und Verschlammung ganz wesentlich unterdrückt.It has now been shown that borax contains an agent which, without attacking the oil itself, largely neutralizes the acids formed and thus significantly extends the usefulness of the oil. With the usual "prismatic" form Na2B.0, io H2O, the effectiveness is only slight. The "octahedral" form Na2B40, -i- 5H20, as it crystallizes from hot saturated solutions on cooling, behaves much more favorably. If this salt is added to the oil in such a way that it presents the latter with as large a surface as possible, both the seperation as well as the darkening and silting are very substantially suppressed.

Gemäß dem den Gegenstand vorliegender Erfindung bildenden Ölkonservierungsverfahren wird daher das Öl mit »olstaedrischem« Borax (Na2B40, -E- 5 H20) in Berührung gebracht. Die notwendige große Oberfläche wird z. B. dadurch erreicht, daß man Faserstoffe, z. B. Baumwollstoff, Filtrierpapier, Asbestgewebe, in eine heiß gesättigte wäßrige Lösung von Borax taucht, in heißer Luft scharf trocknet und im betreffenden elektrischen Apparat, dessen Öl man konservieren will, in geeigneter Weise anbringt. Bei nicht zu hohen Spannungen lassen sich z. B. die Baumwollbänder, mit denen z. B. Spulen usw. umwickelt werden, nach diesem Verfahren behandeln. According to the oil preservation method forming the subject of the present invention, the oil is therefore brought into contact with "olethedral" borax (Na2B40, -E- 5H20). The necessary large surface is z. B. achieved by using fibrous materials, e.g. B. cotton fabric, filter paper, asbestos fabric, immersed in a hot saturated aqueous solution of borax, dried sharply in hot air and attached in a suitable manner in the electrical apparatus in question, the oil of which is to be preserved. If the voltages are not too high, z. B. the cotton ribbons with which z. B. coils, etc. are wrapped, treat according to this method.

Claims (1)

PATENT-ANSPRÜCHE: i. Verfahren zur Konservierung des Öles in Ölkesseln elektrischer Apparate, dadurch gekennzeichnet, daß das Öl mit »oktaedrischem« Borax (Na2B40, -f- 5 H20) in Berührung gebracht wird. z. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß Faserstoffe mit heiß gesättigter Borax1ösung getränkt, getrocknet und im elektrischen Apparat angebracht werden.PATENT CLAIMS: i. Process for the preservation of the oil in oil boilers of electrical apparatus, characterized in that the oil is brought into contact with "octahedral" borax (Na2B40, -f- 5H20). z. Process according to Claim 1, characterized in that fibrous materials are soaked in hot, saturated borax solution, dried and placed in the electrical apparatus.
DEM84860D 1924-04-14 1924-05-06 Process for preserving the oil in oil boilers of electrical apparatus Expired DE425051C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH425051X 1924-04-14

Publications (1)

Publication Number Publication Date
DE425051C true DE425051C (en) 1926-02-11

Family

ID=4514802

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM84860D Expired DE425051C (en) 1924-04-14 1924-05-06 Process for preserving the oil in oil boilers of electrical apparatus

Country Status (1)

Country Link
DE (1) DE425051C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958328C (en) * 1952-12-09 1957-02-14 Siemens Ag Antioxidant for insulating oils

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958328C (en) * 1952-12-09 1957-02-14 Siemens Ag Antioxidant for insulating oils

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