JPH0512531Y2 - - Google Patents
Info
- Publication number
- JPH0512531Y2 JPH0512531Y2 JP1986100277U JP10027786U JPH0512531Y2 JP H0512531 Y2 JPH0512531 Y2 JP H0512531Y2 JP 1986100277 U JP1986100277 U JP 1986100277U JP 10027786 U JP10027786 U JP 10027786U JP H0512531 Y2 JPH0512531 Y2 JP H0512531Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- gap
- gaskets
- bearing
- packing
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 30
- 238000012856 packing Methods 0.000 claims description 25
- 239000003921 oil Substances 0.000 description 24
- 238000005192 partition Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Description
【考案の詳細な説明】
Ａ 産業上の利用分野
この考案は、シール性の高い回転シヤフトの密
封構造に関する。[Detailed Description of the Invention] A. Field of Industrial Application This invention relates to a sealing structure for a rotating shaft with high sealing performance.
Ｂ 考案の概要
この考案は、軸受に回転シヤフトを貫通、嵌合
した密封構造において、該軸受と該回転シヤフト
との間に、軸方向の両端がパツキン係当壁で画成
される間隙を形成し、且つ該間隙の軸方向の両端
部に、夫々、回転シヤフトを周回する一対のパツ
キンを配置すると共に、前記一対のパツキンの間
にスプリングを介在せしめて、夫々のパツキンを
係当壁に向けて付勢し、前記間隙内の両パツキン
間にシール用油を充填したシール用油室を設けた
ものであり、軸受部のシール性を高めたものであ
る。B. Summary of the invention This invention is a sealed structure in which a rotating shaft is inserted through and fitted into a bearing, and a gap is formed between the bearing and the rotating shaft, with both ends in the axial direction defined by packing engaging walls. In addition, a pair of gaskets that go around the rotating shaft are arranged at both ends of the gap in the axial direction, and a spring is interposed between the pair of gaskets to direct each gasket toward the engagement wall. A sealing oil chamber filled with sealing oil is provided between the two packings in the gap, thereby improving the sealing performance of the bearing portion.
Ｃ 従来の技術
従来、この種の回転シヤフトの密封構造として
は、第２図に示すように、回転シヤフト１と軸受
側部材２との間に形成された間隙３に、回転シヤ
フト１を外嵌するパツキン４及びコイルスプリン
グ５が挿入され、パツキン押え部材により間隙３
が閉塞され、コイルスプリング５の弾発力により
パツキン４が回転シヤフト１に密着するようにさ
れたものがある。C. Prior Art Conventionally, as shown in FIG. 2, as a sealing structure for this type of rotating shaft, the rotating shaft 1 is externally fitted into a gap 3 formed between the rotating shaft 1 and a bearing-side member 2. The packing 4 and coil spring 5 are inserted, and the gap 3 is closed by the packing pressing member.
There is one in which the gasket 4 is closed and the gasket 4 is brought into close contact with the rotating shaft 1 by the elastic force of the coil spring 5.
Ｄ 考案が解決しようとする問題点
しかしながら、このような従来の回転シヤフト
の密封構造を、例えば変圧器タンク内部にタツプ
切換機構を有し、タンク外部にその操作機構があ
るタツプ切換器に適用した場合、タンク内部に封
入されている絶縁油あるいはガスの漏洩を無にす
ることが難しく、絶縁油にあつては、定期的な保
守点検が要請される問題点を有しており、また、
ガスが封入されたタンクにあつては、絶縁油に比
べて10〜1000倍も漏洩し易いため、従来の密封構
造では対処出来ない問題点があつた。D Problems to be solved by the invention However, it is difficult to apply this conventional rotary shaft sealing structure to, for example, a tap changer that has a tap change mechanism inside the transformer tank and an operating mechanism outside the tank. In this case, it is difficult to eliminate leakage of the insulating oil or gas sealed inside the tank, and insulating oil has problems that require periodic maintenance and inspection.
Tanks filled with gas are 10 to 1,000 times more likely to leak than insulating oil, which is a problem that cannot be addressed with conventional sealed structures.
この考案は、かゝる従来の問題点に着目して案
出されたものであつて、漏れに対する寿命が長
く、しかもパツキンの摩耗防止効果の高い、回転
シヤフトの密封構造を得んとするものである。 This idea was devised by focusing on the conventional problems, and aims to create a sealing structure for a rotating shaft that has a long service life against leakage and is highly effective in preventing wear of the seal. It is.
Ｅ 問題点を解決するための手段
この考案は、軸受に回転シヤフトを貫通、嵌合
した密封構造において、該軸受と該回転シヤフト
との間に、軸方向の両端がパツキン係当壁で画成
される間隙を形成し、且つ該間隙の軸方向の両端
部に、夫々、回転シヤフトを周回する一対のパツ
キンを配置すると共に、前記一対のパツキンの間
にスプリングを介在せしめて、夫々のパツキンを
係当壁に向けて付勢し、前記間隙内の両パツキン
間にシール用油を充填したシール用油室を設けた
ことを、その構成としている。E. Means for Solving the Problems This invention provides a sealed structure in which a rotating shaft is inserted through and fitted into a bearing, in which both ends in the axial direction are defined by packing engaging walls between the bearing and the rotating shaft. A pair of gaskets are arranged at both ends of the gap in the axial direction, respectively, and the gaskets are arranged around a rotary shaft, and a spring is interposed between the pair of gaskets, and the gaskets The structure includes a sealing oil chamber that is biased toward the engaging wall and filled with sealing oil between the two packings in the gap.
Ｆ 作用
シール用油は、回転シヤフトのシール性を高め
ると共に、パツキンと回転シヤフトの潤滑を良好
となし、該パツキンの摩耗を防止する。また、一
対のパツキンは、スプリングで圧迫されることに
より、回転シヤフトに密着し、シール性が向上す
る。F Effect The sealing oil improves the sealing performance of the rotating shaft, provides good lubrication between the packing and the rotating shaft, and prevents wear of the packing. In addition, the pair of gaskets is pressed by the spring so that they come into close contact with the rotating shaft, improving sealing performance.
Ｇ 実施例
以下、この考案に係る回転シヤフトの密封構造
を、変圧器用のタツプ切換器に適用した一実施例
について説明する。G. Example Hereinafter, an example will be described in which the rotary shaft sealing structure according to this invention is applied to a tap changer for a transformer.
図中、１は回転シヤフトであり、軸受側部材と
しての変圧器タンクのケーシング２Ａの内外側を
貫通して嵌合している。 In the figure, reference numeral 1 denotes a rotating shaft, which penetrates the inside and outside of a casing 2A of a transformer tank as a bearing side member and fits therein.
前記ケーシング２Ａの内側には、絶縁油７が充
填され、前記回転シヤフト１に、タツプ切換機構
（図示省略）が設けられており、また、ケーシン
グ２Ａの外側においては、回転シヤフト１にタツ
プ操作機構（図示省略）が設けられている。 The inside of the casing 2A is filled with insulating oil 7, the rotating shaft 1 is provided with a tap switching mechanism (not shown), and the rotating shaft 1 is provided with a tap operating mechanism (not shown) on the outside of the casing 2A. (not shown) is provided.
また、前記ケーシング２Ａが回転シヤフト１を
軸承する軸受部２ａは肉厚に形成されており、内
外側方向に貫通するシヤフト嵌合孔２ｂが開設さ
れて円筒状となつている。このシヤフト嵌合孔２
ｂは、軸受部２ａのケーシング２Ａの外側端から
ケーシング２Ａの内側方向に向けて所定寸法範囲
において太径の孔とされており、該シヤフト嵌合
孔２ｂに回転シヤフト１が嵌挿された場合に、該
回転シヤフト１と軸受部２ａとの間に、円筒状の
間隙３が形成される。 The bearing portion 2a on which the casing 2A supports the rotary shaft 1 is formed thick, and has a cylindrical shape with a shaft fitting hole 2b penetrating in the inner and outer directions. This shaft fitting hole 2
b is a hole having a large diameter within a predetermined dimension range from the outer end of the casing 2A of the bearing portion 2a toward the inner side of the casing 2A, and when the rotating shaft 1 is fitted into the shaft fitting hole 2b. A cylindrical gap 3 is formed between the rotating shaft 1 and the bearing portion 2a.
図中、８は、軸受部２ａの周壁に開設された孔
であり、前記間隙３に連通している。 In the figure, 8 is a hole opened in the peripheral wall of the bearing portion 2a, which communicates with the gap 3.
前記したように、シヤフト嵌合孔２ｂに回転シ
ヤフト１を嵌挿して形成された間隙３には、断面
略Ｖ字状のパツキン４ａが３本束ねられて、ケー
シング２Ａの外側方から挿入され、該間隙３の最
奥のパツキン係当壁２ｃに当接するように配置さ
れている。また、前記パツキン４ａ〜４ａ群から
所定間隔を介して、他のパツキン４ｂ〜４ｂ群が
配置されるものであり、両パツキン４ａ〜４ａ
群、４ｂ〜４ｂ群間の夫々の内側には、該間隙３
内を水密的に摺動する間隙仕切体９ａ，９ｂが配
置され、さらに、両間隙仕切体９ａ，９ｂ間に
は、圧縮されたスプリング１０が介在されてい
て、両間隙仕切体９ａ，９ｂは、互いに離反する
ように付勢されている。 As described above, in the gap 3 formed by fitting the rotary shaft 1 into the shaft fitting hole 2b, three packings 4a having a substantially V-shaped cross section are bundled together and inserted from the outside of the casing 2A. It is arranged so as to come into contact with the innermost packing engaging wall 2c of the gap 3. Further, other gaskets 4b to 4b group are arranged at predetermined intervals from the gaskets 4a to 4a group, and both gaskets 4a to 4a
The gaps 3 are provided inside each of the groups 4b to 4b.
Gap partitions 9a and 9b are arranged which slide watertightly inside the gap partitions 9a and 9b, and a compressed spring 10 is interposed between the gap partitions 9a and 9b. , are urged away from each other.
なお、前記軸受部２ａの、ケーシング２Ａの外
側方向に位置する開口部には、パツキン押え６を
螺合させて、当該パツキン押え６の端面を、前記
パツキン４ｂのパツキン係当壁６ａとしている。 A packing holder 6 is screwed into the opening of the bearing portion 2a located toward the outside of the casing 2A, and the end surface of the packing holder 6 serves as a packing engaging wall 6a of the packing 4b.
また、前記両間隙仕切体９ａ，９ｂ間には、シ
ール用油１１を、前記孔８から充填してシール用
油室としており、前記孔８は、シール用油１１の
油面との間に油膨張空間１２を介して螺子１３で
閉塞されている。 Further, between the gap partitions 9a and 9b, a sealing oil 11 is filled from the hole 8 to form a sealing oil chamber, and the hole 8 is between the oil surface of the sealing oil 11 and the sealing oil 11. It is closed with a screw 13 via an oil expansion space 12.
次に、この実施例に係る回転シヤフトの密封構
造の作用を説明する。 Next, the operation of the rotary shaft sealing structure according to this embodiment will be explained.
回転シヤフト１は、ケーシング２Ａの軸受部２
ａのシヤフト嵌合孔２ｂに嵌挿されて軸支され、
タツプ操作機構側の動作をタツプ切換機構側に伝
達可能とする。 The rotating shaft 1 has a bearing portion 2 of a casing 2A.
is fitted into the shaft fitting hole 2b of a and is pivotally supported;
The operation of the tap operating mechanism can be transmitted to the tap switching mechanism.
また、前記両パツキン群４ａ〜４ａ，４ｂ〜４
ｂはスプリング１０で付勢される間隙仕切体９
ａ，９ｂによりパツキン係当壁２ｃ，６ａに夫々
圧迫されて変形し、回転シヤフト１に密着し、シ
ール性が高められる。 Further, both the packing groups 4a to 4a, 4b to 4
b is a gap partition 9 urged by a spring 10;
a, 9b deforms by being compressed by the packing engaging walls 2c, 6a, respectively, and comes into close contact with the rotary shaft 1, improving sealing performance.
そして、シール用油１１は、軸受部２ａと回転
シヤフト１とのシール性を更に高め、ケーシング
２Ａの内外側を完全に隔離する。 The sealing oil 11 further improves the sealing performance between the bearing portion 2a and the rotating shaft 1, and completely isolates the inside and outside of the casing 2A.
油膨張空間１２は、シール用油１１の膨張を吸
収し、パツキン４ａ〜４ａ，４ｂ〜４ｂに余分な
負荷がかゝるのを防止している。 The oil expansion space 12 absorbs the expansion of the sealing oil 11 and prevents excess load from being applied to the seals 4a to 4a, 4b to 4b.
以上、実施例について説明したが、この他に各
種の設計変更が可能であり、例えば、上記実施例
にあつては、断面略Ｖ字状のものであるが、他の
断面形状のものであつても勿論よい。 Although the embodiments have been described above, various other design changes are possible. For example, in the above embodiments, the cross section is approximately V-shaped, but other cross-sectional shapes may be used. Of course it's fine.
また、上記実施例は、この考案を変圧器用のタ
ツプ切換器に適用した例であるが、この他、各種
の分野に適用が可能である。 Furthermore, although the above embodiment is an example in which this invention is applied to a tap changer for a transformer, it can be applied to various other fields.
Ｈ 考案の効果
以上の説明から明らかなように、この考案に係
る回転シヤフトの密封構造にあつては、一対のパ
ツキンの他にシール用油がシール性を高めるた
め、例えば、絶縁油、絶縁ガスの漏れを３重に防
止する効果がある。H Effect of the invention As is clear from the above explanation, in the sealing structure of the rotating shaft according to this invention, in addition to the pair of packings, sealing oil improves the sealing performance, so for example, insulating oil, insulating gas It has a triple effect of preventing leakage.
また、間隙に封入したシール用油は、パツキン
の摩耗を防止する潤滑油としての作用があり、パ
ツキンの寿命を延ばすと共に、パツキンのシール
補助材としての効果を有し、漏れを有効に防止す
る効果がある。 In addition, the sealing oil sealed in the gap acts as a lubricating oil that prevents wear of the packing, extending the life of the packing, and also acts as an auxiliary sealing material for the packing, effectively preventing leakage. effective.
第１図は、この考案に係る回転シヤフトの密封
構造を変圧器用のタツプ切換器に適用した一実施
例を示す断面図、第２図は、従来例を示す断面図
である。
１……回転シヤフト、２Ａ……ケーシング、２
ａ……軸受部、２ｃ……パツキン係当壁、３……
間隙、４ａ，４ｂ……パツキン、６……パツキン
押え、６ａ……パツキン係当壁、７……絶縁油、
９ａ，９ｂ……間隙仕切体、１０……スプリン
グ、１１……シール用油、１２……油膨張空間。
FIG. 1 is a sectional view showing an embodiment in which a rotary shaft sealing structure according to the present invention is applied to a tap changer for a transformer, and FIG. 2 is a sectional view showing a conventional example. 1...Rotating shaft, 2A...Casing, 2
a...Bearing part, 2c...Packing wall, 3...
Gap, 4a, 4b... Packing, 6... Packing retainer, 6a... Packing retaining wall, 7... Insulating oil,
9a, 9b... Gap partition, 10... Spring, 11... Seal oil, 12... Oil expansion space.
Claims (1)
において、該軸受と該回転シヤフトとの間に、軸
方向の両端がパツキン係当壁で画成される間〓を
形成し、且つ該間〓の軸方向の両端部に、夫々、
回転シヤフトを周回する一対のパツキンを配置す
ると共に、前記一対のパツキンの間にスプリング
を介在せしめて、夫々のパツキンを係当壁に向け
て付勢し、前記軸受上部より前記間〓に連通する
孔を開設して少なくとも該間〓内の両パツキン間
にシール用油を充填すると共に、該孔を上部で閉
塞して該シール用油面上に油膨張空間を形成した
ことを特徴とする回転シヤフトの密封構造。 In a sealed structure in which a rotating shaft is inserted through and fitted into a bearing, a gap is formed between the bearing and the rotating shaft, and both ends in the axial direction are defined by packing engaging walls, and the gap between the bearing and the rotating shaft is formed. At both ends in the axial direction,
A pair of gaskets is disposed around the rotating shaft, and a spring is interposed between the pair of gaskets to bias each gasket toward a retaining wall, and the upper portion of the bearing communicates with the space between the two gaskets. A rotation characterized in that a hole is opened and sealing oil is filled between at least the two gaskets in the gap, and the hole is closed at the upper part to form an oil expansion space above the sealing oil surface. Shaft sealed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986100277U JPH0512531Y2 (en) | 1986-06-30 | 1986-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986100277U JPH0512531Y2 (en) | 1986-06-30 | 1986-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS636273U JPS636273U (en) | 1988-01-16 |
| JPH0512531Y2 true JPH0512531Y2 (en) | 1993-03-31 |
Family
ID=30969947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986100277U Expired - Lifetime JPH0512531Y2 (en) | 1986-06-30 | 1986-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0512531Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59102121A (en) * | 1982-12-03 | 1984-06-13 | Tokyo Keiso Kk | Sealing structure in cable winding apparatus for winding type liquid level meter |
| JPS6047958B2 (en) * | 1976-04-14 | 1985-10-24 | モ−・オツク・ドムジヨ−・アクテイエボラ−グ | Continuous cleaning method for suspension |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047958U (en) * | 1983-09-09 | 1985-04-04 | 三菱重工業株式会社 | Gland packing type shaft sealing device |
-
1986
- 1986-06-30 JP JP1986100277U patent/JPH0512531Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047958B2 (en) * | 1976-04-14 | 1985-10-24 | モ−・オツク・ドムジヨ−・アクテイエボラ−グ | Continuous cleaning method for suspension |
| JPS59102121A (en) * | 1982-12-03 | 1984-06-13 | Tokyo Keiso Kk | Sealing structure in cable winding apparatus for winding type liquid level meter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS636273U (en) | 1988-01-16 |
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