JPH0113204B2 - - Google Patents
Info
- Publication number
- JPH0113204B2 JPH0113204B2 JP17640081A JP17640081A JPH0113204B2 JP H0113204 B2 JPH0113204 B2 JP H0113204B2 JP 17640081 A JP17640081 A JP 17640081A JP 17640081 A JP17640081 A JP 17640081A JP H0113204 B2 JPH0113204 B2 JP H0113204B2
- Authority
- JP
- Japan
- Prior art keywords
- silicon steel
- steel plates
- laminated
- laminated core
- oil
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Soft Magnetic Materials (AREA)
Description
【発明の詳細な説明】
本発明は変圧器やリアクトル等の油入電気機器
の積層鉄心に関し、騒音が低減するように改良し
たものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated core for oil-filled electrical equipment such as transformers and reactors, which has been improved to reduce noise.
第１図は従来の積層鉄心を示す。同図に示すよ
うに積層鉄心は、両端が斜めとなつている珪素鋼
板１，１ａ，１ｂ，１ｃ相互の端を突き合わせて
矩形状とし、この矩形状の部材を積層してなる。
このとき、積層鉄心は、珪素鋼板１，１ａ，１
ｂ，１ｃを第２図に示す如く配列してなる矩形状
の部材と、第３図に示す如く配列してなる矩形状
の部材とを交互に積層することにより珪素鋼板
１，１ａ，１ｂ，１ｃ相互間の継ぎ目が連続しな
いようになつており、更にクランプ（図示省略）
により固定されている。 Figure 1 shows a conventional laminated iron core. As shown in the figure, the laminated core is made by forming a rectangular shape by abutting the ends of silicon steel plates 1, 1a, 1b, and 1c, each having oblique ends, and stacking these rectangular members.
At this time, the laminated core consists of silicon steel plates 1, 1a, 1
Silicon steel plates 1, 1a, 1b, The seams between 1c are made to be discontinuous, and further clamps (not shown)
Fixed by
ところでかかる積層鉄心にコイルを巻装して油
入電気機器を製作した際、前記コイルに電流を流
す磁気歪により珪素鋼板１〜１ｃが平面方向（図
において紙面に平行方向）に伸縮運動をする。こ
のとき積層している珪素鋼板１〜１ｃ相互間の摩
擦及び積層鉄心とこれを固定するクランプとの間
の摩擦などにより前記伸縮運動を阻止する阻止力
が発生し、この阻止力に起因し珪素鋼板１〜１ｃ
が厚さ方向（図において紙面に垂直方向）に振動
する。つまり、前記阻止力により伸縮運動が拘束
されるため、珪素鋼板１〜１ｃが厚さ方向に撓み
振動が発生するのである。そして、この厚さ方向
の振動が騒音増大の一原因となつていた。 By the way, when an oil-filled electrical device is manufactured by winding a coil around such a laminated core, the silicon steel plates 1 to 1c expand and contract in the plane direction (parallel to the plane of the paper in the figure) due to magnetostriction caused by passing a current through the coil. . At this time, a blocking force is generated to block the expansion and contraction movement due to friction between the laminated silicon steel plates 1 to 1c and friction between the laminated iron core and the clamp that fixes it. Steel plate 1~1c
vibrates in the thickness direction (perpendicular to the plane of the paper in the figure). In other words, since the expansion and contraction movements are restrained by the blocking force, the silicon steel plates 1 to 1c bend and vibrate in the thickness direction. This vibration in the thickness direction is one of the causes of increased noise.
本発明は、上記従来技術に鑑み、騒音を低減し
得る積層鉄心を提供することを目的とする。かか
る目的を達成する本発明の構成は、珪素鋼板を積
層してなる油入電気機器の積層鉄心において、耐
熱性、耐油性及び化学的安定性を有する粉末状の
潤滑剤を前記各珪素鋼板の表面に塗布して形成し
たことを特徴とする。 SUMMARY OF THE INVENTION In view of the above-mentioned prior art, an object of the present invention is to provide a laminated iron core that can reduce noise. The present invention achieves this object by applying a powdered lubricant having heat resistance, oil resistance, and chemical stability to each of the silicon steel plates in a laminated core for oil-filled electrical equipment made of laminated silicon steel plates. It is characterized by being formed by applying it to the surface.
以下、本発明の実施例を図面に基づき詳細に説
明する。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第４図は本発明の実施例に用いられる珪素鋼板
を抽出して示す。同図に示す珪素鋼板２の表面に
は接着剤を介して潤滑剤３が塗布されており、こ
の潤滑剤３として油入電気機器の材料として要求
される耐熱性、耐油性及び化学的安定性を有する
もの、例えばテフロン等の粉末状若しくは固体状
のものが採用される。よつてかかる珪素鋼板２に
より形成された積層鉄心（この構造は第１図に示
すものと同様である）においては、珪素鋼板２相
互間の摩擦抵抗及び積層鉄心とクランプとの間の
摩擦抵抗が低下する。 FIG. 4 shows an extracted silicon steel plate used in an example of the present invention. A lubricant 3 is applied to the surface of the silicon steel plate 2 shown in the figure through an adhesive, and this lubricant 3 has the heat resistance, oil resistance, and chemical stability required as a material for oil-filled electrical equipment. For example, a powder or solid material such as Teflon is used. In a laminated core formed by such silicon steel plates 2 (this structure is similar to that shown in FIG. 1), the frictional resistance between the silicon steel plates 2 and the frictional resistance between the laminated core and the clamp are as follows. descend.
なお上記実施例では珪素鋼板２の表面全面に潤
滑剤３を塗布したが、珪素鋼板２の両端部である
接合部の表面にだけ潤滑剤３を塗布してもよい。 In the above embodiment, the lubricant 3 was applied to the entire surface of the silicon steel plate 2, but the lubricant 3 may be applied only to the surfaces of the joints, which are both ends of the silicon steel plate 2.
以上実施例とともに具体的に説明したように本
発明によれば、珪素鋼板の表面に潤滑剤を塗布し
たため、磁気歪により珪素鋼板が伸縮運動して
も、この伸縮運動を阻止する阻止力（摩擦力）が
小さいため、厚さ方向の振動が抑制され、騒音が
低減する。 As specifically explained above in conjunction with the embodiments, according to the present invention, since a lubricant is applied to the surface of the silicon steel plate, even if the silicon steel plate expands and contracts due to magnetostriction, there is a stopping force (friction) that prevents this expansion and contraction movement. Since the force) is small, vibration in the thickness direction is suppressed and noise is reduced.
第１図は従来の積層鉄心を示す概略図、第２図
及び第３図は積層鉄心の積層状態を示すための説
明図、第４図は本発明の実施例に用いる珪素鋼板
を抽出して示す平面図である。
図面中、１，１ａ，１ｂ，１ｃ，２は珪素鋼
板、３は潤滑剤である。
FIG. 1 is a schematic diagram showing a conventional laminated core, FIGS. 2 and 3 are explanatory diagrams showing the laminated state of the laminated core, and FIG. 4 is an illustration of a silicon steel plate used in an embodiment of the present invention. FIG. In the drawings, 1, 1a, 1b, 1c, and 2 are silicon steel plates, and 3 is a lubricant.
Claims (1)
鉄心において、耐熱性、耐油性及び化学的安定性
を有する粉末状の潤滑剤を前記各珪素鋼板の表面
に塗布して形成したことを特徴とする積層鉄心。1. A laminated core for oil-filled electrical equipment made of laminated silicon steel plates, characterized in that it is formed by applying a powdered lubricant having heat resistance, oil resistance, and chemical stability to the surface of each of the silicon steel plates. Laminated core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17640081A JPS5878404A (en) | 1981-11-05 | 1981-11-05 | Laminated iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17640081A JPS5878404A (en) | 1981-11-05 | 1981-11-05 | Laminated iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5878404A JPS5878404A (en) | 1983-05-12 |
| JPH0113204B2 true JPH0113204B2 (en) | 1989-03-03 |
Family
ID=16013003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17640081A Granted JPS5878404A (en) | 1981-11-05 | 1981-11-05 | Laminated iron core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5878404A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110911121B (en) * | 2019-12-09 | 2025-05-06 | 青岛云路先进材料技术股份有限公司 | Amorphous alloy core and amorphous alloy transformer |
-
1981
- 1981-11-05 JP JP17640081A patent/JPS5878404A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5878404A (en) | 1983-05-12 |
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