JPH0332478Y2 - - Google Patents
Info
- Publication number
- JPH0332478Y2 JPH0332478Y2 JP1983038480U JP3848083U JPH0332478Y2 JP H0332478 Y2 JPH0332478 Y2 JP H0332478Y2 JP 1983038480 U JP1983038480 U JP 1983038480U JP 3848083 U JP3848083 U JP 3848083U JP H0332478 Y2 JPH0332478 Y2 JP H0332478Y2
- Authority
- JP
- Japan
- Prior art keywords
- lip seal
- lip
- seawater
- annular
- closest
- 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
- 239000013535 sea water Substances 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 10
- 238000011084 recovery Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Description
【考案の詳細な説明】
本考案は船尾管軸封装置の改良に関するもので
ある。[Detailed Description of the Invention] The present invention relates to an improvement of a stern tube shaft sealing device.
従来から第１図に示すように、内径部に環状リ
ツプ部ｂを備え、該環状リツプ部ｂにガータース
プリングｃを締着したリツプシールａを、船舶本
体ｄに固着されたケーシングｅ、中間リングｆ、
アダプタリングｇならびにアフトカバーｈ等の固
定部材の軸孔内周に対し軸方向に直列に嵌着せし
めてなる船尾管軸封装置が広く知られている。こ
の軸封装置は、前記各リツプシールａの環状リツ
プ部ｂを、プロペラｊを備えた回転軸ｉに外挿嵌
着したスリーブライナーｋの外周面に密接せし
め、該部に摺接部を形成して、図中Ａにて示す海
水の機内Ｂ側への漏入および機内Ｂに封入された
軸受油（機内油）の船外への漏出を阻止するもの
であり、前記リツプシールａのうち最も海水寄り
のリツプシールａ１とその内側のリツプシールａ
２を海水に対向せしめ、最も機内寄りのリツプシ
ールａ３を機内油に対向せしめており、前記ガー
タースプリングｃの締着力の外、各固定部材の内
周に一体形成したバツクアツプリング部による
各リツプシールａに対する保形作用によつてシー
ル効果を高めんとしている。 Conventionally, as shown in FIG. 1, a lip seal a having an annular lip part b on its inner diameter and a garter spring c fastened to the annular lip part b is attached to a casing e fixed to a ship body d, and an intermediate ring f. ,
A stern tube shaft sealing device is widely known, which is fitted in series in the axial direction to the inner periphery of a shaft hole of a fixing member such as an adapter ring g and an aft cover h. This shaft sealing device brings the annular lip part b of each lip seal a into close contact with the outer circumferential surface of a sleeve liner k fitted externally to a rotating shaft i provided with a propeller j, and forms a sliding contact part in this part. This lip seal is designed to prevent seawater from leaking into the cabin B side as indicated by A in the figure, and to prevent bearing oil (in-machine oil) sealed in the cabin B from leaking out of the vessel. Lip seal a1 on the side and lip seal a on the inside
2 faces the seawater, and the lip seal a3 closest to the inside of the machine faces the oil in the machine.In addition to the tightening force of the garter spring c, each lip seal a is provided with a back-up spring integrally formed on the inner periphery of each fixing member. The aim is to enhance the sealing effect through the shape-retaining effect on the material.
しかしこの船尾管軸封装置によると、長時間に
およぶシール作動に伴なつてどうしても各リツプ
シールａが疲労してしまい、その環状リツプ部ｂ
が摩耗、変形して海水の漏入や機内油の漏出を生
じてしまい、その改良が望まれていた。 However, with this stern tube shaft sealing device, each lip seal a inevitably becomes fatigued as the seal operates over a long period of time, and the annular lip portion b
However, due to wear and deformation, seawater and in-flight oil leaked out, and improvements were desired.
本考案は以上の点に鑑みてなされたものであ
り、最も海水寄りのリツプシールの環状リツプ部
が海水側へ延び、このリツプシールの機内側に隣
接して位置する２番目のリツプシールと、この２
番目のリツプシールのさらに機内側に位置する３
番目のリツプシールの環状リツプ部が機内側へ延
び、最も海水寄りのリツプシールと２番目のリツ
プシールとの間に形成される環状空間に対して、
最も海水寄りのリツプシールに作用する海水圧よ
りも高圧の圧縮空気を送給する機構を設けること
によつて、これら最も海水寄りのリツプシールと
２番目のリツプシールの摺動負荷を零にするとも
に、海水側から２番目と３番目のリツプシール間
の環状空間に対して、該空間内の流体を船内に回
収する機構を誠け、海水および機内油双方の漏洩
を完全に阻止するように構成した船尾管軸封装置
を提供せんとするものである。 The present invention has been developed in view of the above points, and includes a lip seal in which the annular lip portion of the lip seal closest to the seawater extends toward the seawater side, a second lip seal located adjacent to the inboard side of the lip seal, and a second lip seal located adjacent to the inboard side of the lip seal.
3 located further inboard of the th lip seal
The annular lip portion of the second lip seal extends inward to the inside of the machine, and the annular space formed between the lip seal closest to the seawater and the second lip seal,
By providing a mechanism that supplies compressed air with a higher pressure than the seawater pressure acting on the lip seal closest to the seawater, the sliding load on the lip seal closest to the seawater and the second lip seal can be reduced to zero, and the seawater pressure can be reduced to zero. A stern tube configured to completely prevent leakage of both seawater and onboard oil by installing a mechanism for recovering fluid in the annular space between the second and third lip seals from the side into the ship. The present invention aims to provide a shaft sealing device.
以下、本考案の一実施例を図面にしたがつて説
明すると、第２図において、内径部に環状リツプ
部２を備え、該環状リツプ部２にガータースプリ
ング３を締着した３個のリツプシール１Ａ，１
Ｂ，１Ｃが、一部を図示した船舶本体４に順次固
着されたケーシング５、中間リング６、アダプタ
リング７ならびにアフトカバー８の軸孔内周に嵌
着されており、各リツプシール１Ａ，１Ｂ，１Ｃ
の環状リツプ部２が、プロペラ１０を備えた回転
軸９に外挿嵌着されたスリーブライナー１１の外
周面に密接せしめられている。前記リツプシール
１Ａ，１Ｂ，１Ｃのうち、最も海水Ａ寄りのリツ
プシール１Ａは海水Ａに対向せしめられ、すなわ
ちその環状リツプ部２が海水Ａ圧を受けるように
配置され、２番目すなわち中間リツプシール１Ｂ
と３番目すなわち最も機内Ｂ寄りのリツプシール
１Ｃは機内油に対向せしめられ、各リツプシール
１Ａ，１Ｂ，１Ｃの中間に外側の環状空間１２と
内側の環状空間１３が形成せしめられる。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG. 2, three lip seals 1A are provided with an annular lip portion 2 on the inner diameter portion and a garter spring 3 is fastened to the annular lip portion 2. ,1
B and 1C are fitted into the inner circumferences of shaft holes of a casing 5, an intermediate ring 6, an adapter ring 7, and an aft cover 8, which are fixed in sequence to the ship body 4, a part of which is shown, and each lip seal 1A, 1B, 1C
An annular lip portion 2 is brought into close contact with the outer circumferential surface of a sleeve liner 11 which is externally fitted onto a rotating shaft 9 having a propeller 10. Among the lip seals 1A, 1B, and 1C, the lip seal 1A closest to the seawater A is arranged to face the seawater A, that is, its annular lip portion 2 receives the pressure of the seawater A, and the second lip seal 1B, that is, the intermediate lip seal 1B
The third lip seal 1C, that is, the lip seal 1C closest to the interior of the machine B, is opposed to the interior oil, and an outer annular space 12 and an inner annular space 13 are formed between each of the lip seals 1A, 1B, and 1C.
１４はこの外側の環状空間１２に開口するとも
に、アダプタリング７、中間リング６ならびにケ
ーシング５にかけて連続的に穿設された圧縮空気
の供給孔であり、ガスケツト１５の孔を介して船
舶本体４に穿設された孔１６に連通せしめられ、
図示しない機関室の圧縮空気送供装置に接続され
る。アダプタリング７と中間リング６、中間リン
グ６とケーシング５の各接合面には、該供給孔１
４を包囲するようにＯリング１７が介装されてい
る。 Reference numeral 14 denotes a compressed air supply hole that opens into this outer annular space 12 and is continuously drilled through the adapter ring 7, intermediate ring 6, and casing 5, and is supplied to the ship body 4 through a hole in the gasket 15. communicated with the drilled hole 16,
It is connected to a compressed air supply system in the engine room (not shown). Each joint surface between the adapter ring 7 and the intermediate ring 6, and between the intermediate ring 6 and the casing 5 is provided with the supply hole 1.
An O-ring 17 is interposed so as to surround 4.
また図中下方に示した１８は前記内側の環状空
間１３に開口するとともに、中間リング６および
ケーシング５にかけて連続的に穿設された漏洩流
体の回収孔であつて、前記ガスケツト１５の他の
孔を介して船舶本体４に穿設された他の孔１９に
連通せしめられ、機関室の回収装置に接続され
る。中間リング６とケーシング５との接合面には
Ｏリング２０が介装されている。 Reference numeral 18 shown in the lower part of the figure is a leakage fluid recovery hole that opens into the inner annular space 13 and is continuously drilled across the intermediate ring 6 and the casing 5, and is connected to other holes in the gasket 15. It is communicated with another hole 19 drilled in the ship body 4 through the hole, and is connected to a recovery device in the engine room. An O-ring 20 is interposed at the joint surface between the intermediate ring 6 and the casing 5.
以上の構成を有する船尾管軸封装置は、前記外
側の環状空間１２に対し、供給孔１４を介して圧
縮空気供給装置から圧縮空気を絶え間なく送給す
る。この圧縮空気の圧力は最も海水Ａ寄りのリツ
プシール１Ａに対する海水圧よりも高いので、こ
の圧縮空気はリツプシール１Ａ，１Ｂの各環状リ
ツプ部２を拡開して、スリーブライナー１１に対
してほぼ非接触状態になすともに、リツプシール
１Ａの環状リツプ部２から海水Ａ中に溢流する前
記圧縮空気によつて、海水Ａの該環状空間１２内
への漏入を完全に阻止することができる。また、
このとき前記圧縮空気は同時に中間のリツプシー
ル１Ｂの環状リツプ部２を拡径して内側の環状空
間１３に侵入するが、前記回収孔１８から回収装
置にいたる機構によつて船内に回収される。一
方、最も機内Ｂ側のリツプシール１Ｃは、環状空
間１３に回収機構を開設したことによつて、機内
Ｂ側との差圧によりスリーブライナー１１と摺動
して機内油に対するシールを行なうが、このリツ
プシール１Ｃに作用する機内油の圧力は最も海水
寄りのリツプシール１Ａに作用する海水Ａの圧力
ほど高いものではなく、しかも機内油によつて良
好に潤滑されるので、リツプシール１Ｃの摺動負
荷は小さいものである。また、万一このリツプシ
ール１Ｃを漏れて内側の環状空間１３内に漏出し
た機内油は、リツプシール１Ｂから外側の環状空
間１２内への流出が、この外側の環状空間１２か
ら内側の環状空間１３へ流入する前記圧縮空気に
よつて阻まれて、この圧縮空気ともに前記回収孔
１８から船内へ回収されるので、機内油が船外へ
漏出するおそれはまつたくない。 The stern tube shaft sealing device having the above configuration continuously supplies compressed air to the outer annular space 12 from the compressed air supply device through the supply hole 14. Since the pressure of this compressed air is higher than the seawater pressure against the lip seal 1A closest to the seawater A, this compressed air expands each annular lip portion 2 of the lip seals 1A and 1B, making almost no contact with the sleeve liner 11. At the same time, the compressed air overflowing into the seawater A from the annular lip portion 2 of the lip seal 1A can completely prevent the seawater A from leaking into the annular space 12. Also,
At this time, the compressed air simultaneously expands the diameter of the annular lip portion 2 of the intermediate lip seal 1B and enters the inner annular space 13, but is recovered into the ship by a mechanism extending from the recovery hole 18 to the recovery device. On the other hand, the lip seal 1C located closest to the inside of the machine B slides against the sleeve liner 11 due to the differential pressure between the inside B side and seals against the inside oil due to the provision of a recovery mechanism in the annular space 13. The pressure of the in-machine oil acting on the lip seal 1C is not as high as the pressure of seawater A acting on the lip seal 1A closest to the seawater, and since it is well lubricated by the in-machine oil, the sliding load on the lip seal 1C is small. It is something. In addition, in the event that the oil inside the machine leaks through this lip seal 1C and leaks into the inner annular space 13, it will flow out from the lip seal 1B into the outer annular space 12 and from this outer annular space 12 to the inner annular space 13. Since this compressed air is blocked by the inflowing compressed air and is recovered into the ship from the recovery hole 18, there is no risk of in-board oil leaking out of the ship.
本考案の船尾管軸封装置は以上説明したように
最も海水寄りのリツプシールと２番目のリツプシ
ールとの間の環状空間に海水圧よりも高圧の圧縮
空気を供給することによつて、海水の侵入が完壁
に阻止されるともに、前記両リツプシールの摺動
負荷がほぼ零となつてその長寿命化が図れ、しか
も前記環状空間から２番目のリツプシールを通過
してその内側の環状空間に流入する前記圧縮空気
が、３番目のリツプシールから前記内側の環状空
間へ漏洩した機内油の更なる流出を阻止して、こ
の機内油とともに船内へ回収されることから、今
般、大きな社会問題となつている海洋汚染の防止
にも大きく貢献し得るものであり、本考案の実用
的効果はきわめて大きい。 As explained above, the stern tube shaft sealing device of the present invention prevents the intrusion of seawater by supplying compressed air with a pressure higher than seawater pressure to the annular space between the lip seal closest to the seawater and the second lip seal. At the same time, the sliding load on both lip seals becomes almost zero, extending their lifespan.Moreover, the liquid flows from the annular space through the second lip seal and into the annular space inside it. The compressed air prevents further leakage of the cabin oil that has leaked from the third lip seal into the inner annular space, and is recovered into the ship along with this cabin oil, which has recently become a major social problem. This invention can greatly contribute to the prevention of marine pollution, and the practical effects of the present invention are extremely large.
第１図は従来の船尾管軸封装置を示す断面図、
第２図は本考案の一実施例を示す船尾管軸封装置
の断面図である。
１Ａ，１Ｂ，１Ｃ……リツプシール、２……環
状リツプ部、３……ガータースプリング、４……
船舶本体、５……ケーシング、６……中間リン
グ、７……アダプタリング、８……アフトカバ
ー、９……回転軸、１０……プロペラ、１１……
スリーブライナー、１２，１３……環状空間、１
４……圧縮空気供給孔、１６，１９……孔、１８
……漏洩流体回収孔。
Figure 1 is a sectional view showing a conventional stern tube shaft sealing device;
FIG. 2 is a sectional view of a stern tube shaft sealing device showing an embodiment of the present invention. 1A, 1B, 1C... Lip seal, 2... Annular lip portion, 3... Garter spring, 4...
Ship body, 5... Casing, 6... Intermediate ring, 7... Adapter ring, 8... Aft cover, 9... Rotating shaft, 10... Propeller, 11...
Sleeve liner, 12, 13... annular space, 1
4... Compressed air supply hole, 16, 19... Hole, 18
...Leak fluid recovery hole.
Claims (1)
ールを船舶本体側の固定諸部材の軸孔内周に嵌着
せしめるとともに、前記環状リツプ部を回転軸の
スリーブライナー外周に摺接せしめた船尾管軸封
装置において、最も海水寄りのリツプシールの環
状リツプ部が海水側へ延び、このリツプシールの
機内側に隣接して位置する２番目のリツプシール
と、この２番目のリツプシールのさらに機内側に
位置する３番目のリツプシールの環状リツプ部が
機内側へ延び、最も海水寄りのリツプシールと２
番目のリツプシールとの間に形成される外側の環
状空間に対して、最も海水寄りのリツプシールに
作用する海水圧よりも高圧の圧縮空気を送給する
機構を設けるとともに、前記海水側から２番目の
リツプシールと同３番目のリツプシールとの間に
形成される内側の環状空間に対し、該空間内の流
体を船内に回収する機構を設けてなることを特徴
とする船尾管軸封装置。 A stern tube shaft in which a plurality of lip seals each having an annular lip portion on the inner diameter portion are fitted into the inner periphery of a shaft hole of fixed members on the ship body side, and the annular lip portion is brought into sliding contact with the outer periphery of a sleeve liner of a rotating shaft. In the sealing device, the annular lip portion of the lip seal closest to the seawater extends toward the seawater side, and a second lip seal located adjacent to this lip seal on the inside of the machine and a third lip seal located further on the inside of the machine from this second lip seal extend toward the seawater side. The annular lip part of the lip seal extends inward, and the lip seal closest to the seawater and the lip seal 2
A mechanism is provided for supplying compressed air with a pressure higher than the seawater pressure acting on the lip seal closest to the seawater to the outer annular space formed between the lip seal and the lip seal closest to the seawater. A stern tube shaft sealing device, characterized in that an inner annular space formed between a lip seal and a third lip seal is provided with a mechanism for recovering fluid in the space into a ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983038480U JPS59145499U (en) | 1983-03-18 | 1983-03-18 | Stern tube shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983038480U JPS59145499U (en) | 1983-03-18 | 1983-03-18 | Stern tube shaft sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59145499U JPS59145499U (en) | 1984-09-28 |
| JPH0332478Y2 true JPH0332478Y2 (en) | 1991-07-10 |
Family
ID=30169149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983038480U Granted JPS59145499U (en) | 1983-03-18 | 1983-03-18 | Stern tube shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59145499U (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0624793Y2 (en) * | 1988-03-30 | 1994-06-29 | 篠原電機株式会社 | Bicycle parking position detection device |
| JPH0535249Y2 (en) * | 1988-03-31 | 1993-09-07 | ||
| JPH0645439Y2 (en) * | 1988-12-23 | 1994-11-24 | 日本マリンテクノ株式会社 | Stern tube sealing device |
| JP5278990B2 (en) * | 2007-11-19 | 2013-09-04 | 株式会社電業社機械製作所 | Vertical shaft pump and control method thereof |
| SG188496A1 (en) * | 2010-09-29 | 2013-05-31 | Waertsilae Finland Oy | An arrangement, a sealing assembly, a casing flange and a spacer for sealing the propeller shaft of a marine vessel |
| JPWO2020235380A1 (en) * | 2019-05-17 | 2020-11-26 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4724879U (en) * | 1971-03-27 | 1972-11-20 | ||
| US3934952A (en) * | 1975-01-24 | 1976-01-27 | Waukesha Bearings Corporation | Leakproof seal for bearings |
| JPS5832099B2 (en) * | 1974-04-10 | 1983-07-11 | ベ−・ベ−・ツエ−・アクチエンゲゼルシヤフト・ブラウン・ボヴエリ・ウント・コンパニイ | Automatic aseptic filling and packaging method for food and equipment for carrying out the method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5832099U (en) * | 1981-08-28 | 1983-03-02 | 日本ド−バ−株式会社 | Stern tube seal |
-
1983
- 1983-03-18 JP JP1983038480U patent/JPS59145499U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4724879U (en) * | 1971-03-27 | 1972-11-20 | ||
| JPS5832099B2 (en) * | 1974-04-10 | 1983-07-11 | ベ−・ベ−・ツエ−・アクチエンゲゼルシヤフト・ブラウン・ボヴエリ・ウント・コンパニイ | Automatic aseptic filling and packaging method for food and equipment for carrying out the method |
| US3934952A (en) * | 1975-01-24 | 1976-01-27 | Waukesha Bearings Corporation | Leakproof seal for bearings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59145499U (en) | 1984-09-28 |
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