JPS6199775A - Shaft seal device - Google Patents

Shaft seal device

Info

Publication number
JPS6199775A
JPS6199775A JP22257384A JP22257384A JPS6199775A JP S6199775 A JPS6199775 A JP S6199775A JP 22257384 A JP22257384 A JP 22257384A JP 22257384 A JP22257384 A JP 22257384A JP S6199775 A JPS6199775 A JP S6199775A
Authority
JP
Japan
Prior art keywords
seal
seal ring
rotating shaft
shaft
pressurized fluid
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.)
Pending
Application number
JP22257384A
Other languages
Japanese (ja)
Inventor
Hiroshi Kume
久米 宏
Hirobumi Aritsubo
有坪 博文
Takahisa Ogawa
小川 孝久
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.)
Nippon Pillar Packing Co Ltd
Original Assignee
Nippon Pillar Packing Co Ltd
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 Nippon Pillar Packing Co Ltd filed Critical Nippon Pillar Packing Co Ltd
Priority to JP22257384A priority Critical patent/JPS6199775A/en
Publication of JPS6199775A publication Critical patent/JPS6199775A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/46Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

PURPOSE:To obtain high sealing capacity by deforming a seal ring to be radially reduced by force of a pressurized fluid to be brought close to the outer periphery of a rotary shaft. CONSTITUTION:Seal ring accommodating grooves 4a-4c are disposed along the outer periphery of a rotary shaft 2 in the inner peripheral portion of a seal housing 1, and seal rings 5a-5c are accommodated out of contact with the rotary shaft 2 in the seal ring accommodating grooves 4a-4c. On seal housing 1 side, the respective seal rings 5a-5c are pressed from the outer peripheral side by a pressurized fluid, so that the seal rings 5a-5c are deformed to be reduced. In this arrangement, even if the rotary shaft 2 is eccentric or worn away, the seal rings 5a-5c are deformed in such a manner as to follow up the eccentricity and wear by pressure force to obtain high sealing capacity.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、たとえば船舶において回転軸が船内と船外の
境界を11j通する部分、たとえば船j6管部のような
ところに使用すれば流体(1に水)の船内への侵入を効
果的に防止することができる。軸封装置に関する。
Detailed Description of the Invention [Industrial Application Field] The present invention can be applied to a part of a ship where the rotating shaft passes through the boundary between the inside and outside of the ship, such as the pipe part of the ship. It is possible to effectively prevent (1) water from entering the ship. This invention relates to a shaft sealing device.

〔従来技術〕[Prior art]

船舶の船尾管部をシールする海水用の軸封装置としては
、従来、メカニカル端面シール構造とグランドパツキン
構造の2種類があり、前者の普及によって後者は西減し
つつある。
Conventionally, there are two types of seawater shaft sealing devices for sealing the stern tube of a ship: a mechanical end seal structure and a gland seal structure, and as the former becomes more popular, the latter is becoming less popular.

一方、上記海水用の軸封装置ではなく、油相の軸封′J
置は、そのほとんどが、リツプンール方式によるオイル
ンール装置である。
On the other hand, instead of the shaft sealing device for seawater mentioned above, the shaft sealing device for oil phase 'J
Most of the equipment is oil-and-rule equipment based on the rip-pull method.

ところで、上記海水用の軸封装置としてのメカニカル端
面シールは、常用で使用するメカルニカルト端面シール
構造のほかに、非常時に使用する非常用メカニカル端面
シール構造をも併せて設こしており、いずれもffiれ
たシール性峰を発揮しているが、この場合1機構的にか
なり複雑となり。
By the way, the above-mentioned mechanical end seal as a shaft sealing device for seawater is equipped with an emergency mechanical end seal structure for use in emergencies as well as a mechanical end seal structure for regular use, both of which are ffi However, in this case, the mechanism is quite complicated.

部品数もかなり多くなり、非常に高価となる1出題−・
をイ1している。また、th水川用軸封装置としてのク
ランドパツキンによるシールは、該パツキンの多少の増
締めによって密月力をH71に向上させることができる
が、反面1回転軸の摩耗が発生すると1市屯に′IE封
力が低下するのでシール管理が大変であると共に1回転
軸のラジアル方向の偏心に対する追随性がよくないため
1回転軸が製作誤差により或いは何らかの原因で偏心し
て回転している場合、これを確実にシールするのが困難
になるという問題I飄をイ■している・ 一力、油相の軸封装置としてのりツブシール方式による
オイルシールは、前記グランドパツキンの場合と同様、
回転軸のラジアル方向の偏心に弱く、且つ回転軸が少し
でも摩耗すると密封性能が暑しく低下するという問題点
がある。
One question has a large number of parts and is very expensive.
I'm doing 1. In addition, with the seal using the crund packing as the shaft sealing device for th Mizukawa, it is possible to improve the force to H71 by tightening the packing a little, but on the other hand, if the shaft wears out once, it will decrease by one turn. 'IE sealing force is reduced, making seal management difficult, and the ability to follow the eccentricity of the single-rotation shaft in the radial direction is poor, so if the single-rotation shaft is rotating eccentrically due to manufacturing errors or for some other reason, this The oil seal using the glue lub seal method as a shaft sealing device for the oil phase is similar to the case of the gland packing mentioned above.
There is a problem that the rotary shaft is susceptible to eccentricity in the radial direction, and if the rotary shaft wears out even a little, the sealing performance deteriorates.

〔発明の目的〕[Purpose of the invention]

本発明は、木用及び油層をとわず両軸封装置に6川させ
ることができ、しかも構成が簡単で、安価に製造できる
と共にシール性能の信頼性も高く、更には回転軸の偏心
や摩耗に対してもこの回転軸のラジアル方向に良好に追
随し確実なシール効果を得ることができる軸封装置を提
供することを目的としている。
The present invention allows six types of seals to be applied to a double-shaft sealing device regardless of whether it is for wood or an oil layer, has a simple structure, can be manufactured at low cost, and has high reliability in sealing performance. It is an object of the present invention to provide a shaft sealing device that can follow the radial direction of the rotating shaft well even against wear and can obtain a reliable sealing effect.

〔発明の構成〕[Structure of the invention]

本発明の軸封装置は、上記目的を達成するために、シー
ルハウジングの内周部に1回転軸の外周に沿う環状のシ
ールリング収容溝を、回転軸の軸芯方向に複数個並列し
て形成し、これらシールリング収8溝のそれぞれに、そ
の内径を回転軸の外径よりも大径とした弾性材で構成さ
れるシールリングを、回転軸に非接触に遊嵌させた状1
で収容し、またシールハウジング側には、上記各シール
リングを外周側より加圧流体で加圧しそれらシールリン
グを縮小変形させて回転軸を抱く状態に密接させる押圧
手段を配設すると共に、その押圧手段の上記各シールリ
ング収容溝に連通ずる加圧流体供給配管系統のそれぞれ
には開閉弁を設けたものである。
In order to achieve the above object, the shaft sealing device of the present invention has a plurality of annular seal ring receiving grooves arranged in parallel in the axial direction of the rotating shaft in the inner peripheral part of the seal housing along the outer periphery of the rotating shaft. A seal ring made of an elastic material whose inner diameter is larger than the outer diameter of the rotating shaft is loosely fitted into each of these eight seal ring receiving grooves without contacting the rotating shaft.
Further, a pressing means is provided on the seal housing side to pressurize each of the seal rings from the outer circumferential side with pressurized fluid to shrink and deform the seal rings so as to bring them into close contact with each other in a state of hugging the rotating shaft. An on-off valve is provided in each pressurized fluid supply piping system that communicates with each of the seal ring receiving grooves of the pressing means.

〔発明の作用〕[Action of the invention]

従って、このような構成によれば、各シールリングのう
ち選択したシールリングの加圧流体供給配管系統の開閉
弁を開き、加圧流体の圧力により、選択したシールリン
グの外周側を加圧し、その・/−ルリングを径方向に縮
小変形させて回転軸の外I4面に密接させれば、その選
択したシールリングによりシールハウジングと回転軸と
の間を密封することができる。そして、この場合、回転
軸に対するシールリングの密封力は、加圧流体の加圧力
により大きなものにできるとともに、回転軸が偏心ある
いは摩耗しても、シールリングはこれに外周側から加わ
る加圧力によって追随変形し、回転軸の外周面全周に亘
って確実に密接させることかできるものである。
Therefore, according to such a configuration, the on-off valve of the pressurized fluid supply piping system of the selected seal ring is opened, and the outer peripheral side of the selected seal ring is pressurized by the pressure of the pressurized fluid. By shrinking and deforming the ring in the radial direction and bringing it into close contact with the outer I4 surface of the rotating shaft, the selected seal ring can seal between the seal housing and the rotating shaft. In this case, the sealing force of the seal ring against the rotating shaft can be increased by the pressurizing force of the pressurized fluid, and even if the rotating shaft is eccentric or worn, the seal ring can be sealed by the pressurizing force applied from the outer circumference. It deforms accordingly and can be reliably brought into close contact with the entire outer peripheral surface of the rotating shaft.

また、複数個のシールリングのうち1つまたは2つを縮
小f形させて密封している状態においてこの密封状!感
下のシールリングが損耗・劣下して布14劣化が生じる
と、使用されていない他のシールリングに対し、その加
圧流体供給配管系統の開閉弁を開くことで、上記密封劣
化となったシールリングに代えて新たな別のシールリン
グを径方向に縮小変形させて回転軸の外周面に密接させ
ることができるから、非常用軸封装置としての働きも行
えるものである。
In addition, when one or two of the plurality of seal rings are made into a reduced f-shape and sealed, this sealing shape! If the cloth 14 deteriorates due to wear and deterioration of the seal ring below, opening the on-off valve of the pressurized fluid supply piping system for other seal rings that are not in use will prevent the above seal deterioration. In place of the old seal ring, a new seal ring can be reduced and deformed in the radial direction and brought into close contact with the outer peripheral surface of the rotating shaft, so that it can also function as an emergency shaft sealing device.

〔実施例〕〔Example〕

以下、本発明の実施例の詳細を図面を用いて説明する。 Hereinafter, details of embodiments of the present invention will be explained using the drawings.

第1図乃至第4図において、1はシールハウジング、2
はシールハウジングlを貫通する回転軸、3は軸封装置
である。
In Figures 1 to 4, 1 is a seal housing, 2 is a seal housing, and 2 is a seal housing.
3 is a rotating shaft passing through the seal housing l, and 3 is a shaft sealing device.

軸封装置3は、シールハウジングlの円形状の内周部1
bに1回転軸2の外周面に沿う環状のシールリング収容
溝を形成している。このシールリング収容溝は回転輪2
の軸芯方向に沿う複数箇所位置に所要の間隙をおいて複
数個4a〜4cWj成しており、それぞれのシールリン
グ収容IJ14a〜4cに、その内径が回転軸2の外径
よりも適宜量大径とされた弾性材製つまり合成ゴム製(
たとえば、NBR,BR,SBR,EPDN)もしくは
天然ゴム等のエラストマ材製のシールリング5a〜5C
を、回転軸2に非接触に遊嵌させた状態で収容し、tた
シールハウジングL偏に、それぞれのソールリング5a
〜5cを選択的に外周側より加圧流体で加圧しそれらシ
ールリング5a〜5cを径方向に縮小変形させて回転軸
3を抱く状態に密接させる押圧手段6を配設している。
The shaft sealing device 3 includes a circular inner peripheral portion 1 of a seal housing l.
An annular seal ring accommodating groove is formed along the outer circumferential surface of the one-rotation shaft 2 at b. This seal ring housing groove is located on the rotary ring 2.
A plurality of seal rings 4a to 4cWj are formed at a plurality of positions along the axial direction with required gaps, and each seal ring housing IJ14a to 4c has an inner diameter that is appropriately larger than the outer diameter of the rotating shaft 2. Made of elastic material with a diameter of synthetic rubber (
For example, seal rings 5a to 5C made of elastomer material such as NBR, BR, SBR, EPDN) or natural rubber.
are accommodated in a state in which they are loosely fitted onto the rotating shaft 2 without contact, and each sole ring 5a
A pressing means 6 is provided that selectively pressurizes the seal rings 5a to 5c from the outer circumferential side with a pressurized fluid to reduce and deform the seal rings 5a to 5c in the radial direction so as to tightly hug the rotating shaft 3.

シールリング5a〜5Cは第1図乃至第4図によれば、
断面円形状のもので、シールリング収容%174a〜4
cの溝底面7aに接触されると共にシールリング収容溝
の両側壁面7b、7blll’lで若干圧縮された状態
で、各シールリング収容溝内に略役人状に収容されてい
る。また、各シールリング収容溝は回転軸2方向へ順次
拡がる断面王台形状に形成されていると共に、傾斜面た
る各側壁面7bにはフッ素樹脂等の潤滑材が塗布、焼付
けによりコーティングされていて、シールリング収容溝
4a〜4cに収容させたシールリング5a〜5cの径方
向の縮小変形つまり回転軸2方向への移動が円滑に行わ
れるように工夫しである。
According to FIGS. 1 to 4, the seal rings 5a to 5C are as follows.
It has a circular cross section and has a seal ring capacity of 174a to 4.
It is accommodated in each seal ring accommodation groove approximately in the shape of an official in a state in which it is in contact with the groove bottom surface 7a of the seal ring accommodation groove and is slightly compressed by both side wall surfaces 7b and 7bll'l of the seal ring accommodation groove. In addition, each seal ring housing groove is formed in a cross-section that gradually expands in the two directions of the rotating shaft, and each side wall surface 7b, which is an inclined surface, is coated with a lubricant such as fluororesin by applying and baking. The seal rings 5a to 5c accommodated in the seal ring accommodation grooves 4a to 4c are deformed in a radial direction, that is, moved in the direction of the rotating shaft 2, smoothly.

ところで、第4図の如くシールリング収容構4a〜4c
の溝幅つまり溝底面7aの輻Hは、シールリング5a〜
5cの断面の直径つまりll1aWよりも僅かに(数■
)小さく設定しておくことが望ましく、また前記各側壁
面7bの傾斜量つまり回転軸2の軸線方向に沿う方向に
おける偏倚量ΔHは、H/20〜H710程度としてお
くことが望ましい、さらに、シールリング収容溝4a〜
4Cの人口部つまりシールハウジング1の内周部1bと
回転軸2との間隙Sは、シールリング5a〜5Cが径方
向に縮小変形されたときにも、このシールリング5a〜
5Cがシールリング収容l114a〜4Cから脱離しな
いしように設定しておく必要があり、シールリング5a
〜5Cの線1wの1/2より小さく設定しておくことが
望ましい、しかし、この間隙Sは1回転軸2の径方向へ
の偏心による回転軸2とシールハウジング1との干渉及
びシールハウジング1と回転軸2との間の電位差による
腐蝕を防止する上で、無制限に小さくしておくことがで
きるものではない。
By the way, as shown in FIG. 4, the seal ring housing structures 4a to 4c
The groove width, that is, the radius H of the groove bottom surface 7a is the seal ring 5a~
Slightly (several ■
) is desirably set to a small value, and the amount of inclination of each side wall surface 7b, that is, the amount of deviation ΔH in the direction along the axial direction of the rotating shaft 2 is desirably set to be approximately H/20 to H710. Ring accommodation groove 4a~
4C, that is, the gap S between the inner circumference 1b of the seal housing 1 and the rotating shaft 2, even when the seal rings 5a to 5C are reduced and deformed in the radial direction.
It is necessary to set the seal ring 5C so that it does not come off from the seal ring housing l114a to 4C.
It is desirable to set the gap S to be smaller than 1/2 of the line 1w of ~5C. In order to prevent corrosion due to the potential difference between the rotary shaft 2 and the rotary shaft 2, it is not possible to keep it small indefinitely.

また押圧手段6は、シールハウジングlに、各シールリ
ング収容構4a〜4Cの溝底面7a及び両側壁面7b、
7bとシールリング5a〜5CとでVt1まれた閉塞空
間8に通過する加圧流体供給孔9・・・を形成し、これ
ら供給孔9・・・に加圧流体供給機たとえばニアコンプ
レッサlOをそれぞれの加圧流体供給配管系統11m−
11cを介して接続すると共に、各加圧流体供給配管系
統11a〜llc中に開閉弁12a #12cを設け、
この弁を開くことによってその加圧流体供給配管系統に
連dするところの前記閉塞空間8に供給孔9から加圧エ
アが供給される。なお、第1図において軸封!je置3
が船尾管シールに適用される場合、この軸封装置3の図
面右手側を大気側Aとし、図面左手側を密封流体側つま
り海水側Bとすると、軸封装置3は両者間を密封し、上
記エアは第2図に示すように海水側の海水圧力PLより
も適宜圧高い圧力P2に加圧されるものとする。
Further, the pressing means 6 applies the groove bottom surface 7a and both side wall surfaces 7b of each seal ring accommodation structure 4a to 4C to the seal housing l.
7b and the seal rings 5a to 5C form pressurized fluid supply holes 9 that pass into the closed space 8 with Vt1, and a pressurized fluid supply device such as a near compressor lO is connected to each of these supply holes 9. Pressurized fluid supply piping system 11m-
11c, and an on-off valve 12a #12c is provided in each pressurized fluid supply piping system 11a to llc,
By opening this valve, pressurized air is supplied from the supply hole 9 to the closed space 8 connected to the pressurized fluid supply piping system. In addition, in Figure 1, the shaft seal! je placement 3
When applied to a stern tube seal, if the right-hand side in the drawing of this shaft sealing device 3 is the atmosphere side A, and the left-hand side in the drawing is the sealing fluid side, that is, the seawater side B, the shaft sealing device 3 seals between the two, As shown in FIG. 2, the air is pressurized to a pressure P2 that is appropriately higher than the seawater pressure PL on the seawater side.

いま、複数個のシールリング5a〜5Cのうち、一本の
シールリング5b(もしくは二本のシールリング)を選
んで、これに対応する加圧流体供給h!、管系統11b
の開閉弁12bを開くと、閉塞空間8内に圧力2才のエ
フが供給されて、これがシールリング5bの外It4側
に作用する結果、シールリング5bが径方向に縮小変形
され、該シールリング5aの内周部が回転軸2の外周面
にその全周に亘って密接せしめられ、シールハウジング
lと回転軸2との間が密接されるに至り、大気側Aと海
水側Bとが遮断される。
Now, one seal ring 5b (or two seal rings) is selected from among the plurality of seal rings 5a to 5C, and the corresponding pressurized fluid supply h! , pipe system 11b
When the on-off valve 12b is opened, a pressure of 2 years F is supplied into the closed space 8, and as a result of this acting on the outside It4 side of the seal ring 5b, the seal ring 5b is reduced and deformed in the radial direction, and the seal ring The inner peripheral part of 5a is brought into close contact with the outer peripheral surface of the rotating shaft 2 over its entire circumference, and the seal housing l and the rotating shaft 2 are brought into close contact with each other, so that the atmosphere side A and the seawater side B are cut off. be done.

この遮断状態において、シールリング5bは、シールリ
ング収容溝4b内で側面接触以外は自由であり、&動の
拘束がないので、第3図のような回転軸2の偏心、また
傾き、さらには熱膨張による回転軸2とケーシングlの
径方向の位置ずれに対して自由であり、常にIt+1転
軸2の外周面に密接して、密封性を図ることができる。
In this cut-off state, the seal ring 5b is free except for side contact within the seal ring housing groove 4b, and there is no restriction on movement, so the rotation shaft 2 may be eccentric or tilted as shown in FIG. It is free from displacement in the radial direction between the rotating shaft 2 and the casing l due to thermal expansion, and is always in close contact with the outer circumferential surface of the It+1 rotating shaft 2 to ensure sealing.

また、上記密封状態に働いている上記シールリング5b
が損傷等によって正常な密月力を発揮できなくなった際
、例えばこれに隣接するシールリング5aに対しその加
圧流体供給配管系統11aの開閉弁12aを開いて加圧
し、このシールリング5ae径方向に縮小変形させれば
、このシールリング5aを予備あるいは非常用シールリ
ングとして活用できる。これは残りのシールリング5C
においても同様であるといえる。
Also, the seal ring 5b working in the sealed state
When the seal ring 5a cannot exert its normal force due to damage or the like, for example, the seal ring 5a adjacent to it is pressurized by opening the on-off valve 12a of the pressurized fluid supply piping system 11a, and the seal ring 5ae is pressurized in the radial direction. By shrinking and deforming the seal ring 5a, this seal ring 5a can be used as a spare or emergency seal ring. This is the remaining seal ring 5C
The same can be said of .

さらに海水側Bに最も近いシールリング5aを選んで、
これを非常時に働かせて密封し、海水側Bから大気側A
に対する流れを抑えこめば、海水の流れを遮断したまま
で、他のシールリング5b、5cの交換が行える。但し
1回転軸2は、そのinl転を停止Fさせ、シールリン
グは1つ割りリング構Φとする心安がある。
Furthermore, select the seal ring 5a closest to the seawater side B,
This is used in an emergency to seal the seawater side B and the atmospheric side A.
If the flow is suppressed, the other seal rings 5b and 5c can be replaced while the flow of seawater is blocked. However, it is safe to make sure that the one-rotation shaft 2 stops its rotation F, and the seal ring has a one-split ring structure Φ.

を記要施例は船尾管シールの例であるから、Aは大気1
11(その圧力はP、)、Bは海水側(その上刃はP、
)としているが、これ以外の機器例えばポンプとか撹拌
機などにも本発明の軸封装置はd用U「能であり、また
水用の軸封装置としてではな(油田の軸封装置として使
用できることは勿論であり、巾にA側とB側とを完全遮
断する以外に圧力P1 、Pr  、P+の圧力バラン
スを調整することで、A側からB側、またはB側からA
側への気体あるいは液体の流れ凌を調整することも可能
である。
The required example is for a stern tube seal, so A is the atmosphere 1
11 (its pressure is P,), B is the seawater side (its upper blade is P,
), but the shaft sealing device of the present invention can also be used for other devices such as pumps and stirrers, and it cannot be used as a shaft sealing device for water (it cannot be used as a shaft sealing device for oil fields). Of course, it is possible to do this by adjusting the pressure balance of pressures P1, Pr, and P+ in addition to completely blocking the A side and B side.
It is also possible to adjust the flow of gas or liquid to the side.

また、シールリングの断面形状は、:jS1図乃至第4
図の円形以外に、:55図および第6図のような略矩形
状としても良い、第5図のシールリング13の場合、そ
の内周面を三角突出状の突条部13aとし、:tSet
gのシールリング14の場合は、その内周面に凹陥部1
4at−設けているが、これはいずれも回転軸2に対す
るシールリング密接面の面積を少なくして、密封時にシ
ールリング内周面にZ接方が集中作用するようにし、こ
れにより密封力を高めるものである。
In addition, the cross-sectional shape of the seal ring is as follows:
In the case of the seal ring 13 shown in FIG. 5, which has a substantially rectangular shape as shown in FIG. 55 and FIG.
In the case of the seal ring 14 of g, there is a recess 1 on the inner peripheral surface.
4at- is provided, but in both cases, the area of the seal ring contact surface with respect to the rotating shaft 2 is reduced, so that the Z contact direction acts concentratedly on the inner peripheral surface of the seal ring during sealing, thereby increasing the sealing force. It is something.

〔効果〕〔effect〕

以上の説明から明らかなように1本発明によれば、シー
ルリングをこれに外周側から加える加圧流体の力で径方
向に縮小変形させて回転軸の外周面に密接させるように
しているので1回転軸の偏形・、冷耗に対する追随性(
たとえば2〜5 am)にすぐれ、高い密封力を発揮す
ることができる。
As is clear from the above description, according to the present invention, the seal ring is reduced and deformed in the radial direction by the force of pressurized fluid applied from the outer circumferential side to bring it into close contact with the outer circumferential surface of the rotating shaft. Trackability against deformation and cooling of the shaft for one rotation (
For example, from 2 to 5 am), it can exhibit high sealing power.

また、複数個並設したシールリングを選択して使用し、
使用中のシールリングが劣化すれば、これに代えて他の
シールリングを使用できるようにしているので、非常用
軸封装置の併設が不要となり 構成簡単で、かつスペー
ス的にも狭いもので済む。
In addition, by selecting and using multiple seal rings installed in parallel,
If the seal ring in use deteriorates, another seal ring can be used in its place, eliminating the need for an emergency shaft sealing device, simplifying the configuration and requiring less space. .

また、上述のようにシールリングは回転軸の偏、しに対
する追随性にすぐれているから、本発明軸封装置の取付
は工事の際、調1箇所がほとんど不安となり、該工事が
迅速かつ簡便に行える。
In addition, as mentioned above, the seal ring has excellent ability to follow deviations and deviations of the rotating shaft, so when installing the shaft sealing device of the present invention, there is almost no need to worry about adjusting one place during construction, and the construction can be done quickly and easily. can be done.

また、回転軸に接する部材がシールリングのみに限られ
るので、軸封装ことしては経年劣化によるシールリング
の取換えだけで済み、保守性にす(れ、また損傷箇所の
ない装置となる。
Furthermore, since the only member in contact with the rotating shaft is the seal ring, the shaft seal only needs to be replaced by the seal ring due to deterioration over time, which improves maintainability and provides a device with no damaged parts.

さらに、シールリングに作用する加圧流体の圧力をJ!
整すれば、シールリングと回転軸との密接力、つまり密
封力を変更可能であり、従って軸封装置の使用箇所に合
った最適の密封力を簡単に現出させることができる。
Furthermore, the pressure of the pressurized fluid acting on the seal ring is J!
If adjusted, the close contact force between the seal ring and the rotating shaft, that is, the sealing force, can be changed, and therefore, the optimum sealing force suitable for the location where the shaft sealing device is used can be easily achieved.

このように本発明の軸封装置は、常用シール部分及び非
常用シール部分の両名に対して同一構造の7−シリング
群で両者を任なえるものであり。
As described above, the shaft sealing device of the present invention is capable of handling both the regular seal portion and the emergency seal portion with a 7-shilling group having the same structure.

構成が極めて簡単になると共に安価に製造することがで
き、またシール性能の信頼性もすこぶる高く、更には回
転軸の偏心に対する追随性の自由度が高いこと1回転軸
の席耗に対して径方向の変化の追随性の自由度が高いこ
と、水用にも油田にも双方適用することができることな
ど、他の軸封装こには見られない、優れた特徴を有する
ものである。
The configuration is extremely simple and can be manufactured at low cost, and the reliability of the sealing performance is also extremely high.Furthermore, there is a high degree of freedom in following the eccentricity of the rotating shaft. It has excellent features not found in other shaft seals, such as a high degree of freedom in following changes in direction and the ability to be applied to both water and oil fields.

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

Ei’S1図乃至第4図は本発明にかかる軸封装置の一
実施例を示すもので、第1図は縦断側面図、第2図はシ
ールリングの作動状態を示す要部の縦断ルリングの断面
形状変形例を示す断面図である。 1・・・シールリング 1a・・・シールハウジング内周部 2・・・回転軸 3・・・軸封装置 4a〜4C・・・シールリング収容溝 5a〜5c、13.14・・・ンールリング6・・・押
圧手段 1Ja−11c・・・加圧流体供給1!l!管系統12
 a −12c ・・・開閉弁 特許出願人   日本ビラーエ婁株式会社代 理 人 
  弁理士  鈴江 孝−第1図 第3図 第4図 第S図   第6図
Figures Ei'S1 to 4 show an embodiment of the shaft sealing device according to the present invention. Figure 1 is a vertical side view, and Figure 2 is a vertical sectional side view of the main part of the seal ring, showing the operating state of the seal ring. FIG. 7 is a cross-sectional view showing a modified example of the cross-sectional shape. 1... Seal ring 1a... Seal housing inner peripheral part 2... Rotating shaft 3... Shaft sealing devices 4a to 4C... Seal ring housing grooves 5a to 5c, 13.14... Ring ring 6 ... Pressing means 1 Ja-11c ... Pressurized fluid supply 1! l! Pipe system 12
a-12c...On-off valve patent applicant: Agent of Nippon Villae Co., Ltd.
Patent Attorney Takashi Suzue - Figure 1 Figure 3 Figure 4 Figure S Figure 6

Claims (1)

【特許請求の範囲】[Claims] シールハウジングの内周部に、回転軸の外周に沿う環状
のシールリング収容溝を、回転軸の軸芯方向に複数個並
列して形成し、これらシールリング収容溝のそれぞれに
、その内径を回転軸の外径よりも大径とした弾性材で構
成されるシールリングを、回転軸に非接触に遊嵌させた
状態で収容し、またシールハウジング側には、上記各シ
ールリングを外周側より加圧流体で加圧しそれらシール
リングを縮小変形させて回転軸を抱く状態に密接させる
押圧手段を配設すると共に、その押圧手段の上記各シー
ルリング収容溝に連通する加圧流体供給配管系統のそれ
ぞれには開閉弁を設けてなる、ことを特徴とする軸封装
置。
A plurality of annular seal ring accommodating grooves are formed in the inner periphery of the seal housing in parallel in the axial direction of the rotating shaft along the outer periphery of the rotating shaft. A seal ring made of an elastic material with a diameter larger than the outer diameter of the shaft is housed in a loosely fitted state without contact with the rotating shaft, and each of the above seal rings is placed on the seal housing side from the outer circumferential side. A pressurized fluid supply piping system is provided which pressurizes the seal rings with pressurized fluid to shrink and deform the seal rings so as to tightly hug the rotating shaft, and which communicates with each of the seal ring receiving grooves of the press means. A shaft sealing device characterized in that each of them is provided with an on-off valve.
JP22257384A 1984-10-22 1984-10-22 Shaft seal device Pending JPS6199775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22257384A JPS6199775A (en) 1984-10-22 1984-10-22 Shaft seal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22257384A JPS6199775A (en) 1984-10-22 1984-10-22 Shaft seal device

Publications (1)

Publication Number Publication Date
JPS6199775A true JPS6199775A (en) 1986-05-17

Family

ID=16784581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22257384A Pending JPS6199775A (en) 1984-10-22 1984-10-22 Shaft seal device

Country Status (1)

Country Link
JP (1) JPS6199775A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102088053B1 (en) * 2019-11-04 2020-03-11 김영주 Aluminum ship shaft support structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814284U (en) * 1981-06-30 1983-01-28 日立マクセル株式会社 Storage case cover for magnetic tape cartridge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814284U (en) * 1981-06-30 1983-01-28 日立マクセル株式会社 Storage case cover for magnetic tape cartridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102088053B1 (en) * 2019-11-04 2020-03-11 김영주 Aluminum ship shaft support structure

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