JPH05182525A - Electrical insulation oil - Google Patents
Electrical insulation oilInfo
- Publication number
- JPH05182525A JPH05182525A JP35750291A JP35750291A JPH05182525A JP H05182525 A JPH05182525 A JP H05182525A JP 35750291 A JP35750291 A JP 35750291A JP 35750291 A JP35750291 A JP 35750291A JP H05182525 A JPH05182525 A JP H05182525A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- carbons
- electrical insulation
- insulation oil
- carbon
- 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.)
- Withdrawn
Links
Landscapes
- Lubricants (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、変圧器、高圧ケーブ
ル、高圧遮断器、コンデンサー等に使用される電気絶縁
油に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric insulating oil used for transformers, high voltage cables, high voltage circuit breakers, capacitors and the like.
【０００２】[0002]
【従来の技術】電気絶縁油にはパラフィン鉱油、ナフテ
ン鉱油等の鉱油系やポリα−オレフィン合成油やシリコ
ン油等の合成油系のものが知られている。電気絶縁油に
要求される特性は、ＪＩＳＣ２３２０（電気絶縁油）規
格に記載されているように絶縁破壊電圧が高く、体積抵
抗率が高く、化学的に安定なこと、腐食性等がないこと
などの他に、流動帯電特性が優れていることが望まれ
る。この流動帯電特性については、例えば「電気絶縁油
ハンドブック」（石油学会編、ｐ７、ｐ９３、ｐ２３
３）に記載されており、これが劣ると静電気が発生帯電
し、爆発等の原因となったり、絶縁性能が低下するなど
する。そして、これを向上させるため帯電防止剤の添加
などが提案されているとしている。しかしながら、電気
絶縁油自体が優れた流動帯電特性を有するものであれ
ば、望ましいといえる。また、ナフタレン、アントラセ
ン、メチルナフタレン等の縮合多環芳香族炭化水素を核
水素化して得られる縮合多環脂環式炭化水素はコールタ
ールからの原料を用いて製造されるので、タールナフテ
ン油とも称され、多くの潤滑の分野で使用されつつある
（特開昭６２−２７０６８８号公報）が、三員環以上の
縮合多環脂環式炭化水素においては電気絶縁油としての
用途は知られていない。2. Description of the Related Art As electric insulating oils, mineral oils such as paraffin mineral oil and naphthene mineral oil, and synthetic oils such as poly α-olefin synthetic oil and silicone oil are known. The characteristics required for electric insulating oil are high dielectric breakdown voltage, high volume resistivity, chemical stability, no corrosiveness, etc. as described in JIS C2320 (electrical insulating oil) standard. In addition to the above, it is desired that the flow charging property is excellent. Regarding this flow charging characteristic, for example, “Handbook of Electrical Insulating Oil” (edited by Japan Petroleum Institute, p7, p93, p23)
As described in 3), if it is inferior, static electricity is generated and charged, which may cause an explosion or the like, or the insulation performance may be deteriorated. Then, in order to improve this, it is proposed that an antistatic agent be added. However, it can be said that it is desirable that the electric insulating oil itself has excellent flow charging characteristics. In addition, since condensed polycyclic alicyclic hydrocarbons obtained by nuclear hydrogenation of condensed polycyclic aromatic hydrocarbons such as naphthalene, anthracene, and methylnaphthalene are produced using raw materials from coal tar, they are also used as tar naphthene oil. However, it has been used in many lubrication fields (Japanese Patent Laid-Open No. 62-270688), but it is known to be used as an electrically insulating oil in a condensed polycyclic alicyclic hydrocarbon having three or more membered rings. Absent.
【０００３】[0003]
【発明が解決しようとする課題】本発明は流動帯電特性
の優れた電気絶縁油を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric insulating oil having excellent flow charging characteristics.
【０００４】[0004]
【課題を解決するための手段】本発明は、縮合多環脂環
式炭化水素の環構成炭素およびその炭素に直接結合する
炭素の合計が全炭素の８０％以上であり、且つ水素原子
／炭素原子比（Ｈ／Ｃ）が１．６５〜１．８０であっ
て、密度（１５℃）が０．９０〜１．２０g/cm3 である
ナフテン系油からなる電気絶縁油である。DISCLOSURE OF THE INVENTION According to the present invention, the total amount of ring-constituting carbons of condensed polycyclic alicyclic hydrocarbons and carbons directly bonded to the carbons is 80% or more of all carbons, and hydrogen atoms / carbons are contained. It is an electrical insulating oil composed of a naphthenic oil having an atomic ratio (H / C) of 1.65 to 1.80 and a density (15 ° C.) of 0.90 to 1.20 g / cm 3 .
【０００５】縮合多環脂環式炭化水素の環構成炭素およ
びその炭素に直接結合する炭素の合計が全炭素の８０％
以上であり、且つ水素原子／炭素原子比（Ｈ／Ｃ）が
１．６５〜１．８０であって、密度（１５℃）が０．９
０〜１．２０g/cm3 であるナフテン系油は、コールター
ル、ピッチあるいはこれらの熱分解生成物若しくは水素
化分解生成物等の芳香族系の重質油を水素化することに
より得ることができ、これは前記特開昭６２−２７０６
８８号公報に記載されたような方法で製造される。これ
は通常、蒸留により幾つかの留分に分画され、使用され
るが、沸点範囲が高くなるにつれ、密度、粘度とも高く
なるので、目的とする粘度、密度のものを得ることは容
易である。The total amount of the ring-constituting carbon of the condensed polycyclic alicyclic hydrocarbon and the carbon directly bonded to the carbon is 80% of the total carbon.
And above, the hydrogen atom / carbon atom ratio (H / C) is 1.65 to 1.80, and the density (15 ° C.) is 0.9.
The naphthenic oil of 0 to 1.20 g / cm 3 can be obtained by hydrogenating aromatic heavy oil such as coal tar, pitch, or their thermal decomposition products or hydrocracking products. It is possible to use the above-mentioned Japanese Patent Laid-Open No. 62-2706.
It is manufactured by the method described in Japanese Patent Laid-Open No. 88. This is usually fractionated into several fractions by distillation and used, but as the boiling point range increases, both the density and viscosity increase, so it is easy to obtain the desired viscosity and density. is there.
【０００６】このナフテン系油は必要により酸化防止
剤、腐食防止剤等の添加剤を加えて絶縁油とする。な
お、この絶縁油には他の絶縁油を配合することが可能で
ある。この潤滑油は流動帯電性が低いので、変圧器、高
圧ケーブル、高圧遮断器、コンデンサー等に使用される
電気絶縁油として有用である。If necessary, additives such as an antioxidant and a corrosion inhibitor are added to the naphthenic oil to make an insulating oil. In addition, it is possible to mix other insulating oils with this insulating oil. Since this lubricating oil has low flow chargeability, it is useful as an electrical insulating oil used in transformers, high voltage cables, high voltage circuit breakers, capacitors and the like.
【０００７】[0007]
実施例１ コールタールピッチを水素化分解して得られた３７０〜
４７０℃の留分を核水素化して、Ｈ／Ｃが１．７、環構
成炭素およびその炭素に直接結合する炭素の合計が全炭
素の９０％以上のナフテン系油を得、これを蒸留してナ
フテン系油（ＴＮ−１０）を得た。このナフテン系油
（ＴＮ−１０）をチッ素ガスで飽和させたのち、内径３
mm、長さ３０mmの絶縁紙筒に流し、流量、温度を変えて
発生する流動電流（ｐＡ）を測定した。結果を図１に示
す。また、ナフテン系油（ＴＮ−１０）の４０℃および
１００℃における動粘度（ｃＳｔ）は１１．１および
２．６９であり、粘度指数は６８であった。Example 1 370 to 370 obtained by hydrocracking coal tar pitch
Nuclear hydrogenation of a fraction at 470 ° C. yielded a naphthenic oil having H / C of 1.7, the total amount of ring-constituting carbon and carbon directly bonded to the carbon was 90% or more of the total carbon, and this was distilled. To obtain naphthenic oil (TN-10). After saturating this naphthenic oil (TN-10) with nitrogen gas,
The flow current (pA) was measured by changing the flow rate and the temperature by flowing in an insulating paper cylinder having a length of 30 mm and a length of 30 mm. The results are shown in Figure 1. The kinematic viscosity (cSt) of the naphthenic oil (TN-10) at 40 ° C and 100 ° C was 11.1 and 2.69, and the viscosity index was 68.
【０００８】比較例１ 市販の高圧絶縁油について、実施例と同様にして流動帯
電性の測定をした。結果を図２に示す。 比較例２ 市販の２号絶縁油（２号トランス油）について、実施例
と同様にして流動帯電性の測定をした。結果を図３に示
す。Comparative Example 1 With respect to a commercially available high-pressure insulating oil, flow chargeability was measured in the same manner as in the example. The results are shown in Figure 2. Comparative Example 2 With respect to the commercially available No. 2 insulating oil (No. 2 transformer oil), the flow chargeability was measured in the same manner as in the Example. Results are shown in FIG.
【０００９】実施例２ コールタールピッチを水素化分解して得られた３７０〜
４７０℃の留分を核水素化して、Ｈ／Ｃが１．７、環構
成炭素および炭素に直接結合する炭素の合計が全炭素の
９０％以上のナフテン系油を得、これを蒸留してナフテ
ン系油（ＴＮ−１０）を得た。このナフテン系油（ＴＮ
−１０）の誘電正接（８０℃、５０Ｈｚ）は０．００１
％、比誘電率（８０℃、５０Ｈｚ）は１．９０で、ＪＩ
ＳＣ２３２０（電気絶縁油）の１、２および７種の規格
値をいずれもクリアーする。Example 2 370 to 370 obtained by hydrocracking coal tar pitch
Nuclear hydrogenation of a fraction at 470 ° C. yielded a naphthenic oil having H / C of 1.7, the total amount of ring-constituting carbon and carbon directly bonded to carbon was 90% or more of the total carbon, and this was distilled. A naphthenic oil (TN-10) was obtained. This naphthenic oil (TN
-10) dielectric loss tangent (80 ° C, 50Hz) is 0.001
%, Relative permittivity (80 ° C., 50 Hz) is 1.90, JI
Clears all standard values of SC2320 (electrical insulating oil) 1, 2 and 7 types.
【００１０】[0010]
【発明の効果】本発明の絶縁油は流動帯電性が低く、絶
縁性の低下防止、爆発等の災害の防止に有効である。INDUSTRIAL APPLICABILITY The insulating oil of the present invention has a low flow electrification property and is effective in preventing the deterioration of the insulation property and preventing accidents such as explosion.
【図１】流量と流動電流の関係を示すグラフである。FIG. 1 is a graph showing the relationship between flow rate and flowing current.
【図２】流量と流動電流の関係を示すグラフである。FIG. 2 is a graph showing the relationship between flow rate and flowing current.
【図３】流量と流動電流の関係を示すグラフである。FIG. 3 is a graph showing the relationship between flow rate and flowing current.
Claims (1)
よびその炭素に直接結合する炭素の合計が全炭素の８０
％以上であり、且つ水素原子／炭素原子比（Ｈ／Ｃ）が
１．６５〜１．８０であって、密度（１５℃）が０．９
０〜１．２０g/cm3 であるナフテン系油からなる電気絶
縁油。1. The total number of ring-constituting carbons of a condensed polycyclic alicyclic hydrocarbon and carbons directly bonded to the carbons is 80 total carbons.
% Or more, the hydrogen atom / carbon atom ratio (H / C) is 1.65 to 1.80, and the density (15 ° C.) is 0.9.
Electrical insulating oil consisting of naphthenic oil that is 0 to 1.20 g / cm 3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35750291A JPH05182525A (en) | 1991-12-26 | 1991-12-26 | Electrical insulation oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35750291A JPH05182525A (en) | 1991-12-26 | 1991-12-26 | Electrical insulation oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05182525A true JPH05182525A (en) | 1993-07-23 |
Family
ID=18454454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35750291A Withdrawn JPH05182525A (en) | 1991-12-26 | 1991-12-26 | Electrical insulation oil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05182525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7531083B2 (en) | 2004-11-08 | 2009-05-12 | Shell Oil Company | Cycloalkane base oils, cycloalkane-base dielectric liquids made using cycloalkane base oils, and methods of making same |
-
1991
- 1991-12-26 JP JP35750291A patent/JPH05182525A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7531083B2 (en) | 2004-11-08 | 2009-05-12 | Shell Oil Company | Cycloalkane base oils, cycloalkane-base dielectric liquids made using cycloalkane base oils, and methods of making same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990311 |