JP3337421B2 - Fluid sealing device - Google Patents
Fluid sealing deviceInfo
- Publication number
- JP3337421B2 JP3337421B2 JP11070298A JP11070298A JP3337421B2 JP 3337421 B2 JP3337421 B2 JP 3337421B2 JP 11070298 A JP11070298 A JP 11070298A JP 11070298 A JP11070298 A JP 11070298A JP 3337421 B2 JP3337421 B2 JP 3337421B2
- Authority
- JP
- Japan
- Prior art keywords
- seal ring
- fitted
- fitting
- diameter
- fitting hole
- 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
Description
【０００１】[0001]
【発明の属する技術分野】本発明は蒸気プラント用機器
とパイプとの結合部等、高温状態で使用される部材間に
おける流体のシールに適用される流体シール装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid seal device applied to seal a fluid between members used in a high temperature state, such as a joint between a steam plant device and a pipe.
【０００２】[0002]
【発明が解決しようとする課題】図４は蒸気プラント用
機器において、高温で作動する機器４に蒸気あるいは高
温水が通流するパイプ３を結合する継手部における流体
シール装置の従来の１例を示す。FIG. 4 shows a conventional example of a fluid seal device in a joint portion for connecting a pipe 3 through which steam or high-temperature water flows to a device 4 operating at a high temperature in a device for a steam plant. Show.
【０００３】図４において４は高温で作動する機器、３
は内部を蒸気、高温水等の高温流体が通流するパイプで
ある。上記パイプ３の端部外周にはリング溝３ａが刻設
され、同リング溝３ａ内には環状のシールリング１１が
嵌装されている。同シールリング１１は４角形断面をな
し、周上に１箇所合い口（図示省略）を備えている。In FIG. 4, reference numeral 4 denotes a device which operates at a high temperature;
Is a pipe through which a high-temperature fluid such as steam or high-temperature water flows. A ring groove 3a is engraved on the outer periphery of the end of the pipe 3, and an annular seal ring 11 is fitted in the ring groove 3a. The seal ring 11 has a quadrangular cross-section, and has an abutment (not shown) at one location on the circumference.
【０００４】上記パイプ３と機器４の嵌合穴４ａとは、
図４（Ａ）に示される嵌合前の状態、つまり自由状態に
おいては、シールリング１１はその張り代によって外径
Ｄｐが嵌合穴４ａの内径Ｄよりも大きくなっている。そ
して、上記パイプ３を機器４の嵌合穴４ａ内に嵌合する
際には外力によってシールリング１１をその張力に抗し
て縮径し、この縮径を保持した状態で嵌合穴４ａ内に嵌
合する。上記嵌合後は、図４（Ｂ）に示すように、シー
ルリング１１はこれの張力によって嵌合穴４ａの内周に
密着し、これによって流体のシールがなされる。[0004] The pipe 3 and the fitting hole 4a of the device 4 are
In the state before fitting shown in FIG. 4 (A), that is, in the free state, the outer diameter Dp of the seal ring 11 is larger than the inner diameter D of the fitting hole 4a due to the allowance. When the pipe 3 is fitted into the fitting hole 4a of the device 4, the seal ring 11 is reduced in diameter against external tension by the external force, and the inside of the fitting hole 4a is maintained with the reduced diameter. Fits. After the fitting, as shown in FIG. 4B, the seal ring 11 is brought into close contact with the inner periphery of the fitting hole 4a due to the tension of the seal ring 11, thereby sealing the fluid.
【０００５】上記パイプ３と機器４とを嵌合する際にお
いて、上記シールリング１１を外力により縮径して上記
嵌合穴４ａに円滑に挿入するため、嵌合穴４ａの入口に
案内用のテーパ部等のガイド部を設けることがなされて
いる。このガイド部の長さＬは次の式で与えられる。When the pipe 3 and the device 4 are fitted together, the seal ring 11 is reduced in diameter by an external force and smoothly inserted into the fitting hole 4a. A guide portion such as a tapered portion is provided. The length L of the guide is given by the following equation.
【０００６】 Ｌ＝（１／２λ）（（Ｄｐ−Ｄ）＋（ｄｐ−ｄ）） （１） ここで、λ＝ガイド部の傾きで、１／３〜１／４。L = (1 / 2λ) ((Dp−D) + (dp−d)) (1) Here, λ = 傾 き to １ ／ of the inclination of the guide portion.
【０００７】Ｄｐ，Ｄ，ｄｐ，ｄは図４（Ａ）に示す直
径であり、 Ｄｐ＝自由状態でのシールリング外径。Dp, D, dp, and d are the diameters shown in FIG. 4A, and Dp = the outer diameter of the seal ring in a free state.
【０００８】Ｄ＝嵌合穴の内径。 ｄｐ＝自由状態でのシールリング内径。D = inner diameter of the fitting hole. dp = seal ring inner diameter in free state.
【０００９】ｄ＝パイプのリング溝底直径。 上記のように、従来のものにおいては、シールリング２
をその張力に抗して縮径して嵌合穴４ａ内に挿入するに
は、上記（１）式に示すような長さＬのガイド部が必要
となって、嵌合寸法が増加して機器の大型化につながる
とともに、形状寸法面から上記ガイド部を設けるのが困
難あるいは不可能な場合はシールリングの嵌合及びこれ
に伴うシール装置の組立作業の困難度が増し、組立工数
が増大する。D = Pipe ring groove bottom diameter As described above, in the prior art, the seal ring 2
In order to reduce the diameter against the tension and insert it into the fitting hole 4a, a guide portion having a length L as shown in the above equation (1) is required, and the fitting size increases. When it is difficult or impossible to provide the above-mentioned guide portion due to the shape and dimensions, the degree of difficulty in fitting the seal ring and the assembling work of the sealing device increases, resulting in an increase in the number of assembly steps. I do.
【００１０】本発明の目的は、シールリングによって流
体のシールを行なうシール装置において、シールリング
の嵌合穴への挿入を同シールリングの縮径に外力を要す
ることなく施行可能として、シール装置の組立作業を容
易化し組立工数を低減することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a seal device in which a seal ring seals a fluid so that the seal ring can be inserted into a fitting hole without external force required to reduce the diameter of the seal ring. An object of the present invention is to facilitate assembling work and reduce assembling man-hours.
【００１１】[0011]
【課題を解決するための手段】本発明は上記のような問
題点を解決するもので、その要旨とする第１の手段は、
パイプ等の嵌合部材の外周に刻設されたリング溝内にシ
ールリングを嵌装し、機器の嵌合穴に、同嵌合穴の内周
面と上記シールリングの外周面とを当接させて上記嵌合
部材を嵌合してなる流体シール装置において、上記シー
ルリングの外周面に環状の溝を設けるとともに、同溝内
に、上記嵌合部材を通流する流体の温度で張力が弛緩す
る材料からなり、上記嵌合部材と機器とが嵌合されない
状態において上記シールリングを縮径させ、嵌合状態で
は上記シールリングの縮径を解放する線材を嵌装したこ
とを特徴とする流体シール装置にある。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and the first means, which is the gist thereof, is:
A seal ring is fitted in a ring groove engraved on the outer periphery of a fitting member such as a pipe, and the inner peripheral surface of the fitting hole and the outer peripheral surface of the seal ring are brought into contact with the fitting hole of the device. In the fluid seal device in which the fitting member is fitted, an annular groove is provided on the outer peripheral surface of the seal ring, and tension is set in the groove at the temperature of the fluid flowing through the fitting member. Relax
That of a material, when no is fitted with the fitting member and the device is reduced in diameter to the seal ring, the fluid in the fitting state, characterized in that fitted the wire to release the diameter of the seal ring In the sealing device.
【００１２】[0012]
【００１３】上記手段によれば、シールリングを嵌合部
材の外周に嵌装して嵌合部材を相手部材に嵌合する前の
段階にてシールリングの外周の溝内に線材を嵌合させ、
同線材を固縛してシールリング１の外径を嵌合穴の内径
よりもやや小径まで縮径させた後、シールリング付きの
嵌合部材を相手部材の嵌合穴内に嵌合させる。この際に
おいて、シールリングの外径は嵌合穴の内径よりもやや
小さく縮径されているので、従来技術のようなガイド部
を設けることなくきわめて容易に嵌合できる。According to the above means, the wire is fitted into the groove on the outer periphery of the seal ring at a stage before the seal ring is fitted on the outer periphery of the fitting member and the fitting member is fitted on the mating member. ,
After securing the same wire to reduce the outer diameter of the seal ring 1 to a slightly smaller diameter than the inner diameter of the fitting hole, the fitting member with the seal ring is fitted into the fitting hole of the mating member. At this time, since the outer diameter of the seal ring is slightly smaller than the inner diameter of the fitting hole, it can be fitted very easily without providing a guide portion as in the prior art.
【００１４】そして、機器の運転により、シールリング
部の温度が上昇すると、熱分解性あるいは熱軟化性を有
する線材が分解あるいは軟化して固縛力がゼロとなり、
シールリングはそれ自体の張り力により嵌合穴の内周に
接着され、所要の流体シール機能を発揮する。従って、
上記手段によればシールリングの嵌合穴への挿入が何ら
外力を要することなくきわめて容易にでき、シール装置
の組立作業が容易化され、組立工数が低減される。When the temperature of the seal ring increases due to the operation of the device, the heat decomposable or heat softening wire is decomposed or softened, and the fastening force becomes zero.
The seal ring is adhered to the inner periphery of the fitting hole by its own tension, and exhibits a required fluid sealing function. Therefore,
According to the above-mentioned means, the insertion of the seal ring into the fitting hole can be extremely easily performed without requiring any external force, and the assembling work of the sealing device is facilitated and the number of assembling steps is reduced.
【００１５】また、上記嵌合部材を通流する流体の温度
で張力が弛緩する材料からなる線材を、溶剤によって溶
解可能な材料からなる線材に置き換えることも本発明に
含まれる。 The temperature of the fluid flowing through the fitting member
The present invention also includes replacing a wire made of a material whose tension is relaxed by the above with a wire made of a material soluble in a solvent.
【００１６】[0016]
【発明の実施の形態】以下図１〜図３を参照して本発明
の実施形態につき説明する。図１は本発明の実施形態に
係る蒸気プラント用機器のパイプ接続部構造を示す要部
断面図、図２はシールリングの側面図、図３はシールリ
ングの断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a sectional view of a main part showing a pipe connecting portion structure of a steam plant device according to an embodiment of the present invention, FIG. 2 is a side view of a seal ring, and FIG. 3 is a sectional view of the seal ring.
【００１７】図１において、４は高温で作動する機器、
３は内部を蒸気、高温水等の高温流体が通流するパイプ
である。上記パイプ３の端部外周にはリング溝３ａが刻
設され、同リング溝３ａ内には環状のシールリング１１
が嵌装されている。In FIG. 1, reference numeral 4 denotes a device that operates at a high temperature;
Reference numeral 3 denotes a pipe through which a high-temperature fluid such as steam or high-temperature water flows. A ring groove 3a is engraved on the outer periphery of the end of the pipe 3, and an annular seal ring 11 is formed in the ring groove 3a.
Is fitted.
【００１８】上記シールリング１は、その外周面１ｂの
全周に沿って底部が円孤状断面の溝１ａが刻設され、上
記溝１ａ内には、図１に示されるように線材２が全周に
亘って嵌合されている。上記線材２は、高分子材等の高
温で分解する素材あるいは熱軟化性を有する素材からな
る。The seal ring 1 has a groove 1a having an arcuate cross section at the bottom along the entire outer peripheral surface 1b, and a wire 2 as shown in FIG. 1 is formed in the groove 1a. It is fitted over the entire circumference. The wire 2 is made of a material that decomposes at a high temperature, such as a polymer material, or a material having thermal softening properties.
【００１９】そして上記線材２ａは上記溝１ａ内に嵌合
されて、上記シールリング１の自由状態において、図１
に示すように同シールリング１の外径Ｄ1 が上記機器４
の嵌合穴４ａの内径Ｄよりもやや小さくなるようにシー
ルリング１を外周から縛るようになっている。１ｄはガ
スタイト型に構成された上記シールリング１の合い口で
ある。The wire 2a is fitted into the groove 1a, and when the seal ring 1 is in a free state,
The instrument 4 the external diameter D 1 of the same seal ring 1 as shown in
The seal ring 1 is tied from the outer periphery so as to be slightly smaller than the inner diameter D of the fitting hole 4a. Reference numeral 1d denotes an abutment of the seal ring 1 configured as a gas tight type.
【００２０】上記構成からなるパイプ接続構造を備えた
蒸気プラント機器において、パイプ３の挿入前において
は、図１に示すように、リング溝３ａ内に嵌装され、自
由状態にあるシールリング１の溝１ａ内に線材２を嵌合
し、同線材２に張力を与え上記シールリング１を外周か
ら縛って上記リング溝３ａの底面に押し付け、外径Ｄ 1
が上記機器４の嵌合穴４ａの内径Ｄよりもやや小さい径
に縮径させる。この場合上記線材２はシールリング１の
張り力に抗し得る強度を有することを要する。A pipe connection structure having the above configuration is provided.
Before inserting pipe 3 in steam plant equipment
Is fitted in the ring groove 3a as shown in FIG.
Wire 2 fits into groove 1a of seal ring 1 in free state
Then, tension is applied to the wire 2 so that the seal ring 1
And pressed against the bottom of the ring groove 3a, 1
Is slightly smaller than the inner diameter D of the fitting hole 4a of the device 4.
Reduce the diameter. In this case, the wire 2
It is necessary to have a strength that can withstand tension.
【００２１】上記のようにして線材２によりシールリン
グ１を外径Ｄ1 に縛った状態でパイプ３を機器４の嵌合
穴４ａ内に挿入し固定する。この際において、上記のよ
うに、シールリング１の外径Ｄ1 は嵌合穴４ａの内径Ｄ
よりもやや小径であるので、従来のもののようなガイド
部を設けなくても、シールリング１付きのパイプ３は、
きわめて容易に嵌合穴４ａ内に挿入することができる。
この際において線材２は、これの継ぎ目あるいは結び目
が上記溝１ａからシールリング１の外周面１ｂよりも外
側へはみ出さないように嵌合しておく。With the seal ring 1 tied to the outer diameter D 1 by the wire 2 as described above, the pipe 3 is inserted into the fitting hole 4 a of the device 4 and fixed. At this time, as described above, the outer diameter D1 of the seal ring 1 is equal to the inner diameter D of the fitting hole 4a.
Since the diameter of the pipe 3 is slightly smaller than that of the conventional one, the pipe 3 with the seal ring 1 can be formed without providing a guide part as in the conventional case.
It can be very easily inserted into the fitting hole 4a.
At this time, the wire 2 is fitted so that the seam or knot does not protrude from the groove 1a to the outside of the outer peripheral surface 1b of the seal ring 1.
【００２２】上記作業によってパイプ３を機器４に固定
した後、機器４を運転してその温度が上昇し、シールリ
ング１の温度も上昇すると、熱分解性あるいは熱軟化性
を有する上記線材２が機器４からの熱によって分解ある
いは軟化し、同線材２による上記シールリング１の固縛
が解かれる。これによって同シールリング１はそれ自体
の張り力により拡径し、嵌合穴４ａの内周面に密着さ
れ、所要の流体シール機能を発揮する。After the pipe 3 is fixed to the device 4 by the above operation, the temperature of the device 4 is increased by operating the device 4 and the temperature of the seal ring 1 is also increased. Decomposition or softening is caused by heat from the device 4, and the sealing of the seal ring 1 by the wire 2 is released. As a result, the diameter of the seal ring 1 is increased by its own tension force, and the seal ring 1 is brought into close contact with the inner peripheral surface of the fitting hole 4a, thereby exhibiting a required fluid sealing function.
【００２３】尚、上記シールリング１は、その使用前に
予備加熱あるいは部分加熱により、正規な運転が可能な
状態にしておくことも可能である。The seal ring 1 can be made ready for normal operation by preheating or partial heating before use.
【００２４】また、上記線材２は、溶剤で溶解する素材
を用い、同線材２でシールリング１を縛って嵌合穴４ａ
内に挿入した後、上記溶剤に上記線材２を接触あるいは
浸すことによりこれを溶解させ、シールリング１の張力
を回復するようにしてもよい。The wire 2 is made of a material soluble in a solvent.
After inserting the wire rod 2 into the inside, the wire rod 2 may be dissolved by contacting or dipping the wire rod 2 with the solvent to recover the tension of the seal ring 1.
【００２５】[0025]
【発明の効果】本発明は以上のように構成されており、
本発明によれば、シールリング付きの嵌合部材を機器の
嵌合穴へ挿入する際には、線材にてシールリングを固縛
し縮径させて挿入し、機器の運転時には熱によって線材
の固縛力が解放されてシールリングがそれ自体の張り力
によって嵌合穴の内周に密着され所要のシール機能をな
し得るので、何ら外力を要することなくシールリングを
嵌合穴に挿入できて所要のシール機能を得ることができ
る。The present invention is configured as described above.
According to the present invention, when the fitting member with the seal ring is inserted into the fitting hole of the device, the seal ring is lashed with a wire and inserted with the diameter reduced, and the wire is inserted by heat during operation of the device. Since the securing force is released and the seal ring is brought into close contact with the inner periphery of the fitting hole by its own tension force and can perform the required sealing function, the seal ring can be inserted into the fitting hole without any external force. The required sealing function can be obtained.
【００２６】これにより、従来のもののようなガイド部
を必要とすることなくシールリングの挿入が容易にで
き、シール装置の組立作業が容易化され組立工数が低減
される。As a result, the seal ring can be easily inserted without the need for a guide portion unlike the conventional one, and the assembling work of the sealing device is facilitated and the number of assembling steps is reduced.
【図１】本発明の実施形態に係る蒸気プラント機器のパ
イプ結合部の要部断面図。FIG. 1 is a sectional view of a main part of a pipe connection part of a steam plant equipment according to an embodiment of the present invention.
【図２】上記実施形態におけるシールリングの側面図。FIG. 2 is a side view of the seal ring in the embodiment.
【図３】上記実施形態におけるシールリングの断面図。FIG. 3 is a sectional view of the seal ring in the embodiment.
【図４】従来のパイプ結合部の要部断面図を示し、
（Ａ）はパイプ挿入前、（Ｂ）はパイプ挿入後の形態。FIG. 4 is a cross-sectional view of a main part of a conventional pipe joint,
(A) is a state before pipe insertion, and (B) is a state after pipe insertion.
１ シールリング １ａ 溝 １ｂ 外周面 ２ 線材 ３ パイプ ３ａ リング溝 ４ 機器 ４ａ 嵌合穴 DESCRIPTION OF SYMBOLS 1 Seal ring 1a Groove 1b Outer peripheral surface 2 Wire 3 Pipe 3a Ring groove 4 Equipment 4a Fitting hole
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−139632（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16J 15/00 ────────────────────────────────────────────────── (5) References JP-A-7-139632 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F16J 15/00
Claims (2)
リング溝内にシールリングを嵌装し、機器の嵌合穴に同
嵌合穴の内周面と上記シールリングの外周面とを当接さ
せて上記嵌合部材を嵌合してなる流体シール装置におい
て、上記シールリングの外周面に環状の溝を設けるとと
もに、同溝内に、上記嵌合部材を通流する流体の温度で
張力が弛緩する材料からなり、上記嵌合部材と機器とが
嵌合されない状態において上記シールリングを縮径さ
せ、嵌合状態では上記シールリングの縮径を解放する線
材を嵌装したことを特徴とする流体シール装置。1. A seal ring is fitted in a ring groove engraved on an outer periphery of a fitting member such as a pipe, and an inner peripheral surface of the fitting hole and an outer peripheral surface of the seal ring are fitted in a fitting hole of a device. In the fluid seal device in which the fitting member is fitted by abutting the sealing member, an annular groove is provided on the outer peripheral surface of the seal ring, and a fluid flowing through the fitting member is provided in the groove. At temperature
It is made of a material whose tension is relaxed, wherein the diameter of the seal ring is reduced in a state where the fitting member and the device are not fitted, and a wire that releases the diameter reduction of the seal ring in the fitted state is fitted. Fluid sealing device.
リング溝内にシールリングを嵌装し、機器の嵌合穴に同
嵌合穴の内周面と上記シールリングの外周面とを当接さ
せて上記嵌合部材を嵌合してなる流体シール装置におい
て、上記シールリングの外周面に環状の溝を設けるとと
もに、同溝内に、溶剤によって溶解可能な材料からな
り、上記嵌合部材と機器とが嵌合されない状態において
上記シールリングを縮径させ、嵌合状態では上記シール
リングの縮径を解放する線材を嵌装したことを特徴とす
る流体シール装置。2. An incision formed on the outer periphery of a fitting member such as a pipe.
Fit the seal ring in the ring groove and fit it into the fitting hole of the equipment.
The inner peripheral surface of the fitting hole and the outer peripheral surface of the seal ring
And a fluid seal device formed by fitting the fitting member
When an annular groove is provided on the outer peripheral surface of the seal ring,
In the same groove, a material that can be dissolved by a solvent is used.
In the state where the fitting member and the device are not fitted,
The seal ring is reduced in diameter, and the seal is
A wire that releases the diameter of the ring is fitted.
Fluid seal device that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11070298A JP3337421B2 (en) | 1998-04-21 | 1998-04-21 | Fluid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11070298A JP3337421B2 (en) | 1998-04-21 | 1998-04-21 | Fluid sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11303997A JPH11303997A (en) | 1999-11-02 |
| JP3337421B2 true JP3337421B2 (en) | 2002-10-21 |
Family
ID=14542300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11070298A Expired - Lifetime JP3337421B2 (en) | 1998-04-21 | 1998-04-21 | Fluid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3337421B2 (en) |
-
1998
- 1998-04-21 JP JP11070298A patent/JP3337421B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11303997A (en) | 1999-11-02 |
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