JPH01193466A - Packing of shaft for closing liquefied medium - Google Patents

Packing of shaft for closing liquefied medium

Info

Publication number
JPH01193466A
JPH01193466A JP63308705A JP30870588A JPH01193466A JP H01193466 A JPH01193466 A JP H01193466A JP 63308705 A JP63308705 A JP 63308705A JP 30870588 A JP30870588 A JP 30870588A JP H01193466 A JPH01193466 A JP H01193466A
Authority
JP
Japan
Prior art keywords
shaft
packing
medium
lip
seal
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.)
Granted
Application number
JP63308705A
Other languages
Japanese (ja)
Other versions
JPH0814321B2 (en
Inventor
Piichiyu Giyuntaa
ギュンター　ピーチュ
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.)
Blohm and Voss GmbH
Original Assignee
Blohm and Voss GmbH
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 Blohm and Voss GmbH filed Critical Blohm and Voss GmbH
Publication of JPH01193466A publication Critical patent/JPH01193466A/en
Publication of JPH0814321B2 publication Critical patent/JPH0814321B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3244—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip

Abstract

PURPOSE: To ensure sufficient lubrication of a seal strip so as to elongate the lifetime of a seal by making an angle between a conical projection of a lip seal and a shaft be smaller than a specified value and making a viscosity of a liquid decrease with the decrease of the angle. CONSTITUTION: A lip seal has a fixed portion 1, wave 2 and lip 3. The lip 3 is pressed upon a shaft 7 via a seal strip 4 having a smooth edge portion. Further, a conical projection 5 extends from the seal strip 4 toward a medium W to be sealed. The projection 5 forms an extremely small acute angle α (12 degrees or smaller) with respect to the shaft 7. Further, the conical projection 5 has a smooth face opposite to the shaft 7, and the lip 3 is also shaped to a cone in the plane on the side of a gaseous medium G. The cone on the side of the gaseous medium G is substantially smaller than a cone toward the liquid medium in an axial direction.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、特許請求の範囲の第１請求項におけるプレア
ンブルに示した特徴を有する、気体状媒体、特に大気に
対して、液体状媒体を密閉するためのシャフトのパツキ
ンに関するものである。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application The invention relates to the sealing of a liquid medium against a gaseous medium, in particular against the atmosphere, having the features indicated in the preamble of the first claim. This relates to the packing of the shaft.

従来技術とその問題点 従来のこの種のシャフトのパツキン（ドイツ国特許第１
５２５８８２号および同第１１０１０７４号）において
、液体状媒体は、比較的高い粘性を有する潤滑オイルか
らなっている。それに加えて、液体状媒体は、気体状媒
体よりも高くないか、またはこれよりもわずかに高い圧
力を有しており、その結果、パツキン端縁の両側にほぼ
等しい圧力が加えられる。Conventional technology and its problems Conventional packing of this type of shaft (German patent No. 1)
No. 525,882 and No. 1,101,074), the liquid medium consists of a lubricating oil having a relatively high viscosity. In addition, the liquid medium has a pressure that is no higher than, or slightly higher than, the gaseous medium, so that approximately equal pressure is applied on both sides of the packing edges.

このようなパツキンにおいては、パツキン端縁とシャフ
トとの間の隙間を通じて、潤滑オイルが気体状媒体側の
空間に入ってくることにより、潤滑オイルが失われると
いう問題が生じる。In such a packing, a problem arises in that the lubricating oil enters the space on the gaseous medium side through the gap between the edge of the packing and the shaft, resulting in loss of lubricating oil.

したがって、円錐形状の突出部のシャフトに対する角度
が４５″またはこれより大きい値に選ばれており、パツ
キン端縁のシャフトへの押圧力を減少させ得る潤滑剤の
樹形状の注入が十分に回避される。Therefore, the angle of the conical projection with respect to the shaft is chosen to be 45" or greater, to a large extent avoiding tree-shaped injection of lubricant that could reduce the pressing force of the sealing edge onto the shaft. Ru.

しかしながら、この処置は、流体媒体が、小さい粘性を
有する媒体、例えば水からなっており、さらに水の圧力
が気体状媒体の圧力よりも大きいときには、船舶のスク
リューシャフトのパツキンが低下するという場合を生じ
、望ましくないものであることが明らかとなる。However, this measure does not apply to the case where the fluid medium consists of a medium with low viscosity, for example water, and when the pressure of the water is greater than the pressure of the gaseous medium, the packing of the ship's screw shaft deteriorates. occurs and proves to be undesirable.

すなわち、この場合において、パツキン端縁の潤滑は、
水による望ましくない潤滑のため、リップパツキンの十
分な耐用年数を保証するのに満足のいくものではない。That is, in this case, the lubrication of the packing edge is
Due to undesirable lubrication by water, it is not satisfactory to guarantee a sufficient service life of the lip seal.

本発明の課題は、前述のような場合に、パツキン端縁の
十分な潤滑を達成し、それによって必要なパツキンの耐
用年数を得ることであるや発明の構成 この課題は、本発明によって、リップパツキンにおける
円錐形状の突出部のシャフトに対する角度をたかだか１
２’″とし、この角度を小さくすればするほど、液体の
粘性率が小さくなるようにすることによって解決される
。The problem of the invention is to achieve sufficient lubrication of the seal edges in the above-mentioned cases and thereby obtain the required service life of the seal. The angle of the conical protrusion on the packing with respect to the shaft is at most 1
2''', and the smaller this angle is, the lower the viscosity of the liquid becomes.

本発明によって、円錐形状の突出部およびシャフト間の
非常に小さい鋭角のテーパ角度により、前述のパツキン
端縁とシャフトとの間隙を通じての水漏れが引き起こさ
れ、その結果、水の望ましくない潤滑性にもかかわらず
、パツキン端縁およびシャフト間の十分な潤滑が達成さ
れる。According to the invention, the very small acute taper angle between the conical protrusion and the shaft causes water leakage through the aforementioned gap between the packing edge and the shaft, resulting in undesirable lubricity of the water. Nevertheless, sufficient lubrication between the packing edges and the shaft is achieved.

このとき、漏れた水が、気体状媒体側の空間に侵入する
ことは不利な点とならないことが重要である。というの
は、この漏れた水は、比較的簡単なよく知られた取水装
置によって容易に取り除かれ得るからである。In this case, it is important that the leaked water does not enter the space on the side of the gaseous medium, which is a disadvantage. This is because this leaked water can be easily removed by relatively simple and well known water intake devices.

たかだか１２″の小さいテーパ角度は、ある意味で、意
図された導水機能を備えている。なぜならば、シャフト
と円錐との間に樹形状に圧力が加えられ、これによって
リップパツキンが水力学的にシャフト上に浮かび、すな
わちシャフトとリップパツキンとの間隙が広げられ、意
図された漏れが気体状媒体側の空間へ案内されるからで
ある。−４°〜８°の非常に小さい鋭角のテーパ角度を
存するリング状のリップパツキンがすでに知られている
（ドイツ国特許第１２４８３９９号）。しかしながら、
このリップパツキンは、運転制御のための円錐とは無関
係であって、むしろ、リップパツキンへの取付は以前の
円錐と関係があり、この円錐は、運転状態において、シ
ャフト上で弾性変形をすることにより取り除かれるもの
であり、前述のような押圧とは無関係である。The small taper angle of at most 12" has, in a sense, the intended water-conducting function, since pressure is applied to the tree shape between the shaft and the cone, which causes the lip seal to become hydraulically This is because it floats on the shaft, i.e. the gap between the shaft and the lip seal is widened and the intended leakage is guided into the space on the side of the gaseous medium.A very small acute taper angle of -4° to 8° A ring-shaped lip seal is already known (German Patent No. 1248399).However,
This lip seal is independent of the cone for operating control; rather, the attachment to the lip seal is related to the previous cone, which in operating conditions undergoes elastic deformation on the shaft. , and is unrelated to the above-mentioned pressing force.

本発明によるシャフトのパツキンの実施例において、円
錐形状の突出部の表面は、水力学的に作用するガイド溝
を有しており、このガイド溝は、液体状媒体を高圧の媒
体から低圧の媒体へ導くように形成されている。In an embodiment of the shaft packing according to the invention, the surface of the conical projection has a hydraulically acting guide groove which allows the liquid medium to be transferred from the high-pressure medium to the low-pressure medium. It is designed to lead to.

したがって、意図された気体状媒体への液体状媒体の流
れが促進され、強められ、そしてこれは一定の前提条件
のもとに望ましいものである。The flow of the liquid medium into the intended gaseous medium is thus promoted and intensified, and this is desirable under certain preconditions.

さらに、ガイド溝は、パツキン端縁に向かうで切られた
ねし山として形成され、さらに、突出部の周囲を少なく
とも１つのピンチで取り囲むようになっている。Furthermore, the guide groove is formed as a thread cut towards the edge of the seal and is further arranged to surround the protrusion with at least one pinch.

これによって、簡単な方法で、ピッチを対応して変える
ことにより、前記ガイド溝の導水の強さを、その都度必
要に応じて調節することができる。This makes it possible in a simple manner to adjust the strength of the water conduction of the guide groove as required in each case by correspondingly varying the pitch.

実施例 第１図において、リップパツキンは、固定部（１）、ウ
ェブ（２）およびリップ部（３）を有している。前記リ
ップ部（３）は、この実施例において、滑らかな縁部を
存するパツキン端縁（４）で、シャフト（７）に圧接し
ている。パツキン端縁（４）から密閉すべき媒体（賀）
へ向かう方向には、円錐形状の突出部（５）がのびてお
り、この突出部（５）は、シャフト（７）と、非常に小
さい鋭角αをなしている。前記円錐形状の突出部（５）
は、シャフト（７）に対向する面が滑らかに形−成され
ている。気体状媒体（Ｇ）側の面においても、リップ部
（３）は同様にして円錐形状に形成されている。この気
体状媒体（Ｇ）側の円錐は、軸方向において本質的に、
液体状媒体へ向けられた前記円錐よりも短くなっている
が、本発明にょろりツブ部の機能にとっては重要なもの
ではない。Embodiment In FIG. 1, the lip seal has a fixing part (1), a web (2) and a lip part (3). Said lip (3) presses against the shaft (7) with a packing edge (4) which in this embodiment has a smooth edge. Media to be sealed from packing edge (4)
In the direction towards, a conical projection (5) extends, which forms a very small acute angle α with the shaft (7). The conical protrusion (5)
The surface facing the shaft (7) is formed smoothly. On the surface facing the gaseous medium (G), the lip portion (3) is similarly formed into a conical shape. In the axial direction, this cone on the side of the gaseous medium (G) essentially
Although it is shorter than the cone directed toward the liquid medium, it is not critical to the function of the tip of the invention.

第２図に示したりノブパツキンは、円錐形状のリング状
突出部（５）が、シャフト（７）に対向する円錐表面に
、多数のねし山からなるガイド溝（６）を形成されてい
ること以外は、前述の第１図におけるリップパツキンと
同様の構成を有している。The knob gasket shown in Fig. 2 has a conical ring-shaped protrusion (5) formed with a guide groove (6) consisting of a large number of threads on the conical surface facing the shaft (7). Other than that, it has the same structure as the lip packing shown in FIG. 1 described above.

第３図において、本発明によるリップパツキンは、隼独
のパツキンとしてだけでなく、一定の間隔をおいて連続
的に配置された２つ以上のリップパツキンからなる通常
のパツキン構造として配置され得ることが示される。こ
のパツキン構造において、（Ｌ４．５）は、密閉すべき
媒体（−）に隣接するリップパツキンであり、（１’、
　　４’、　　５’）は、気体状媒体に隣接するリップ
パツキンである。In FIG. 3, the lip seal according to the present invention can be arranged not only as a Hayabusa seal but also as a normal seal structure consisting of two or more lip seals consecutively arranged at a constant interval. is shown. In this packing structure, (L4.5) is the lip packing adjacent to the medium (-) to be sealed, (1',
4', 5') are lip packings adjacent to the gaseous medium.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明による、ガイド溝を有していないリッ
プパツキンを示す断面図、 第２図は、本発明による、ガイド溝を有するリップパツ
キンを示す断面図、 第３図は、本発明による、互いに軸方向に配置された２
つのリップパツキンを有するパツキン構造を示す断面図
である。 （１）　　・・・　固定部 （２）　　・・・　ウェブ （３）　　・・・　リップ部 （４）　　・・・　パツキン端縁 （５）　　・・・　突出部 （６）　　　・　・　・　　ガイド溝 （７）　　・・・　シャフト 特許出願人　ブローム　ラント　フオスアクチェンゲゼ
ルシャフトFIG. 1 is a cross-sectional view showing a lip seal without a guide groove according to the present invention. FIG. 2 is a cross-sectional view showing a lip seal having a guide groove according to the present invention. FIG. 2 axially arranged with respect to each other according to
FIG. 3 is a sectional view showing a seal structure having two lip seals. (1) ...Fixing part (2) ...Web (3) ...Lip part (4) ...Packing edge (5) ...Protrusion part (6) ...Guide groove (7) ) ... Shaft patent applicant Blohm Land Huossakchengesellshaft

Claims (3)

【特許請求の範囲】[Claims] （１）弾性材からなり、シャフトの周囲を囲むパッキン
端縁で前記シャフトに圧接するリング状のリップパッキ
ンを有し、前記パッキン端縁から密閉すべき液体へ向か
って、円錐形状のリング状の突出部がのび、運転状態に
おいて前記突出部が前記シャフトと角度をなす、気体状
媒体、特に大気に対して液体状媒体を密閉するためのシ
ャフトのパッキンであって、 前記液体状媒体が小さい粘性を有し、さらに前記液体状
媒体が前記気体状媒体よりも大きい圧力を有する場合に
おいて、前記突出部の前記シャフトとなす角度がたかだ
か１２゜であり、前記角度が小さくなるにつれて前記液
体状媒体の粘性率が小さくなることを特徴とするシャフ
トのパッキン。(1) It is made of an elastic material and has a ring-shaped lip packing that presses against the shaft at the edge of the packing that surrounds the periphery of the shaft, and a conical ring-shaped A packing of a shaft for sealing a liquid medium against a gaseous medium, in particular against the atmosphere, in which the projection extends and in the operating state the projection forms an angle with the shaft, wherein the liquid medium has a low viscosity. and the liquid medium has a higher pressure than the gaseous medium, and the angle between the protrusion and the shaft is at most 12 degrees, and as the angle decreases, the pressure of the liquid medium increases. Shaft packing characterized by low viscosity. （２）前記円錐形状のリング状突出部の表面に、水力学
的に作用するガイド溝が形成され、前記ガイド溝は、前
記液体状媒体を高圧の媒体から低圧の媒体へ導くように
形成されていることを特徴とする第１請求項記載のシャ
フトのパッキン。(2) A hydraulically acting guide groove is formed on the surface of the conical ring-shaped protrusion, and the guide groove is formed to guide the liquid medium from a high pressure medium to a low pressure medium. The shaft packing according to claim 1, characterized in that: （３）前記ガイド溝が、パッキン端縁に向かって切られ
たねじ山として形成され、前記ガイド溝は、前記リング
状突出部の周囲を少なくとも１つのピッチで取り囲むよ
うになっていることを特徴とする第２請求項記載のシャ
フトのパッキン。(3) The guide groove is formed as a thread cut toward the edge of the packing, and the guide groove surrounds the ring-shaped protrusion at at least one pitch. A packing for a shaft according to claim 2.
JP63308705A 1987-12-11 1988-12-06 Packing of shaft for sealing liquid medium Expired - Lifetime JPH0814321B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3742080.1 1987-12-11
DE3742080A DE3742080C2 (en) 1987-12-11 1987-12-11 Shaft seal for sealing a liquid medium

Publications (2)

Publication Number Publication Date
JPH01193466A true JPH01193466A (en) 1989-08-03
JPH0814321B2 JPH0814321B2 (en) 1996-02-14

Family

ID=6342410

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63308705A Expired - Lifetime JPH0814321B2 (en) 1987-12-11 1988-12-06 Packing of shaft for sealing liquid medium

Country Status (8)

Country Link
JP (1) JPH0814321B2 (en)
KR (1) KR0121287B1 (en)
CN (1) CN1015817B (en)
AU (1) AU609910B2 (en)
DE (1) DE3742080C2 (en)
GB (1) GB2213540B (en)
NL (1) NL193289C (en)
SE (1) SE470140B (en)

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FR2939836B1 (en) * 2008-12-12 2015-05-15 Snecma SEAL FOR PLATFORM SEAL IN A TURBOMACHINE ROTOR
DE102011107735A1 (en) * 2010-09-29 2012-03-29 Carl Freudenberg Kg Oil seal for radial rotary shaft arrangement, has middle guard lip that is provided in position between seal lips along axial direction
DE102011018584A1 (en) * 2011-04-11 2012-10-11 Blohm + Voss Industries Gmbh Seal for sealing waves
DE102011102477A1 (en) 2011-05-24 2012-11-29 Blohm + Voss Industries Gmbh seal
DE102012006125A1 (en) 2012-03-20 2013-09-26 Blohm + Voss Industries Gmbh Sealing ring for sealing e.g. propeller shaft of ship against water, has sealing edge made of wear resistance material, and clamping element and membrane applied with high elasticity material, where materials are bonded by vulcanization
CN103742651B (en) * 2014-01-29 2016-11-16 烟台润蚨祥油封有限公司 A kind of low friction reciprocating movement sealing part
KR101579957B1 (en) 2015-03-03 2015-12-28 한국에스케이에프씰 주식회사 Engine oil seal of friction reducing type

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* Cited by examiner, † Cited by third party
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JPS5179262U (en) * 1974-12-18 1976-06-23
JPS60185764U (en) * 1984-05-21 1985-12-09 エヌオーケー株式会社 oil seal
JPS6213871A (en) * 1985-07-09 1987-01-22 カコ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング　ウント　コンパニ− Radial shaft seal ring

Also Published As

Publication number Publication date
CN1035711A (en) 1989-09-20
AU609910B2 (en) 1991-05-09
DE3742080C2 (en) 1994-07-07
CN1015817B (en) 1992-03-11
KR0121287B1 (en) 1997-12-26
GB2213540B (en) 1991-10-16
KR890010436A (en) 1989-08-08
GB2213540A (en) 1989-08-16
NL193289B (en) 1999-01-04
AU2657688A (en) 1989-06-15
JPH0814321B2 (en) 1996-02-14
SE8804472D0 (en) 1988-12-09
DE3742080A1 (en) 1989-06-22
SE8804472L (en) 1989-06-12
GB8828438D0 (en) 1989-01-05
NL193289C (en) 1999-05-06
NL8803034A (en) 1989-07-03
SE470140B (en) 1993-11-15

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