JPH0110517Y2 - - Google Patents
Info
- Publication number
- JPH0110517Y2 JPH0110517Y2 JP1983150847U JP15084783U JPH0110517Y2 JP H0110517 Y2 JPH0110517 Y2 JP H0110517Y2 JP 1983150847 U JP1983150847 U JP 1983150847U JP 15084783 U JP15084783 U JP 15084783U JP H0110517 Y2 JPH0110517 Y2 JP H0110517Y2
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- spiral
- gasket
- gasket body
- inner ring
- 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
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Gasket Seals (AREA)
Description
【考案の詳細な説明】
本考案は内外輪付のうず巻形ガスケツトで、大
口径寸法のフランジ継手に有効である。[Detailed description of the invention] The invention is a spiral gasket with inner and outer rings, and is effective for large-diameter flange joints.
うず巻形ガスケツトはテープ状の金属製波形薄
板と石綿紙などの緩衝材とを重ね合わせ、うず巻
状に巻いて、巻き初めと巻き終りの部分の金属製
波形薄板を数箇所点溶接して円環状のガスケツト
本体を成形し、適用流体が高圧の場合とか、大口
径寸法の場合には、前記ガスケツト本体の内径側
及び外径側にガスケツト本体の厚さ寸法より小さ
い厚さの円環板状の内輪及び外輪が嵌合状態に装
着される。この内外輪付のうず巻形ガスケツト
は、配管のフランジ継手に装着され密封作用をす
る。 A spiral-wound gasket is made by overlapping a tape-like corrugated metal sheet with a cushioning material such as asbestos paper, rolling it into a spiral shape, and spot-welding the corrugated metal sheet at several points at the beginning and end of the winding. An annular gasket body is formed, and if the applied fluid is at high pressure or has a large diameter, annular plates with a thickness smaller than the thickness of the gasket body are installed on the inner and outer diameter sides of the gasket body. The inner ring and outer ring are fitted in a fitted state. This spiral-wound gasket with inner and outer rings is attached to a flange joint of a pipe and acts as a seal.
この場合、内外輪付のうず巻形ガスケツトをボ
ルトにて締め付けたとき、先づ密封効果を生じる
ガスケツト本体が締め付けられるが、適用流体が
高圧のときには大きな締付力を必要とするため過
剰に締め付けたり、また、フランジ継手の強度が
弱い関係と相俟つて、フランジ継手の内径側に比
較して外径側が過剰に締め付けられ、内径側が脹
むいわゆるフランジ継手のベンデイング現象が生
じる。その結果、うず巻形ガスケツト外輪の外周
のみが強力に締め付けられるが、密封効果を生じ
るガスケツト本体の締め付け力がフランジ継手の
脹みによつて低下していくことになり、これが、
流体漏洩の原因となつている。上記傾向は、フラ
ンジ継手が大口径になるほど著しい。 In this case, when a spiral-wound gasket with inner and outer rings is tightened with a bolt, the gasket body that produces a sealing effect is tightened first, but when the applied fluid is at high pressure, a large tightening force is required, so it may be over-tightened. In addition, combined with the weak strength of the flange joint, the outer diameter side of the flange joint is excessively tightened compared to the inner diameter side, resulting in the so-called bending phenomenon of the flange joint, in which the inner diameter side bulges. As a result, only the outer periphery of the spiral gasket outer ring is strongly tightened, but the tightening force of the gasket body, which produces a sealing effect, decreases due to the swell of the flange joint.
This causes fluid leakage. The above tendency becomes more pronounced as the diameter of the flange joint becomes larger.
そこで、本考案者は、上記欠点は内輪と外輪の
厚さ寸法が同一であることに基因していることを
みいだし、内輪の厚さ寸法を外輪の厚さ寸法より
0.5mm以上厚くすることによつて、フランジ継手
のベンデイング現象が生じてもガスケツト本体に
て有効に密封できるうず巻形ガスケツトを考案し
たものである。 Therefore, the inventor of the present invention discovered that the above drawback is due to the fact that the thickness of the inner ring and the outer ring are the same.
By increasing the thickness by 0.5 mm or more, we have devised a spiral-wound gasket that can be effectively sealed with the gasket body even if bending occurs in the flange joint.
図面について、本考案を説明する。 The invention will be explained with reference to the drawings.
ガスケツト本体１は、テープ状の金属製波形薄
板と石綿紙などの緩衝材とを重ね合せてうず巻状
に巻いて成形され、従来から知られているうず巻
形ガスケツトの基本形である。 The gasket body 1 is formed by overlapping a corrugated thin metal plate in the form of a tape and a cushioning material such as asbestos paper and winding it in a spiral shape, and is the basic shape of a conventionally known spiral-wound gasket.
ガスケツト本体１の内径側及び外径側には、円
環板状の金属製内輪２及び外輪３を嵌合する。こ
こで、内輪２の厚さ寸法を外輪３の厚さ寸法より
0.5mm以上厚くしてあり、これが本考案の特徴と
するところである。 An annular plate-shaped metal inner ring 2 and outer ring 3 are fitted into the inner and outer diameter sides of the gasket body 1. Here, the thickness of the inner ring 2 is smaller than the thickness of the outer ring 3.
The thickness is 0.5 mm or more, which is a feature of the present invention.
以下に内外輪付うず巻形ガスケツトの寸法につ
いて、言及する。 The dimensions of the spiral-wound gasket with inner and outer rings will be discussed below.
ガスケツト本体の厚さは、種々存在するが、大
口径寸法においては4.5mm、6.4mm寸法の厚さが多
く、従来の内外輪付うず巻形ガスケツトは、内輪
と外輪の厚さ寸法は同一であり、具体的にはガス
ケツト本体の厚さが4.5mmのときの内外輪は3.0mm
又は3.2mmであり、6.4mmのときは、4.0mm、又は
4.5mmである。本考案の内輪及び外輪は内輪の厚
さ寸法が外輪のそれより大であつて、例えば、ガ
スケツト本体の厚さ寸法が6.4mmのときには内輪
4.5mmに対し外輪は3.0〜3.2mm、また内輪4.0mmに
対し外輪3.0mm位であり、その比は1.3〜1.5位が適
当である。 There are various thicknesses for the gasket body, but for large-diameter sizes, 4.5 mm and 6.4 mm are the most common.For conventional spiral-wound gaskets with inner and outer rings, the inner and outer rings have the same thickness. Yes, specifically when the thickness of the gasket body is 4.5mm, the inner and outer rings are 3.0mm.
Or 3.2mm, 6.4mm, 4.0mm, or
It is 4.5mm. In the inner ring and outer ring of the present invention, the thickness of the inner ring is larger than that of the outer ring. For example, when the thickness of the gasket body is 6.4 mm, the inner ring
The outer ring is 3.0 to 3.2 mm to 4.5 mm, and the outer ring is 3.0 mm to 4.0 mm, and a suitable ratio is 1.3 to 1.5.
一方、内輪の厚さ寸法が外輪の厚さ寸法より
0.5mm未満の厚さであると、口径寸法にもよるが
フランジ継手のベンデイング現象が生じたとき、
ガスケツト本体の締付面圧力が低下し、好ましく
ない。 On the other hand, the thickness of the inner ring is greater than that of the outer ring.
If the thickness is less than 0.5 mm, bending of the flange joint may occur, depending on the diameter size.
The tightening surface pressure of the gasket body decreases, which is undesirable.
次に第３図について、本考案の作用効果を説明
する。 Next, with reference to FIG. 3, the effects of the present invention will be explained.
フランジ継手４，５間に本考案のうず巻形ガス
ケツトを装着し、ボルト６にてフランジ継手及び
うず巻形ガスケツトを締め付けたとき、先づ、ガ
スケツト本体１が締め付けられ圧縮し、ついで締
付力が大きくなり、フランジ継手にベンデイング
現象が生じると内輪の外径部７にボルトの締付力
が負荷される。さらにボルトの締付力が大きくな
ると、内輪の外径部７がフランジのベンデイング
の支点となるが、ガスケツト本体１には常に圧縮
方向の力を受けることになる。そのため、ガスケ
ツト本体の締付面圧が低下することなく、また、
増締めを行つても安定した密封効果が得られる。 When the spiral gasket of the present invention is installed between the flange joints 4 and 5, and the flange joint and the spiral gasket are tightened with the bolts 6, the gasket body 1 is first tightened and compressed, and then the tightening force increases. When this increases and a bending phenomenon occurs in the flange joint, the tightening force of the bolt is applied to the outer diameter portion 7 of the inner ring. When the bolt tightening force further increases, the outer diameter portion 7 of the inner ring becomes a fulcrum for bending the flange, but the gasket body 1 is always subjected to a force in the compression direction. Therefore, the tightening surface pressure of the gasket body does not decrease, and
A stable sealing effect can be obtained even when retightening is performed.
以上のように本考案のうす巻形ガスケツトは、
内輪の厚さ寸法を外輪の厚さ寸法より大にするこ
とによつて、フランジ継手のベンデイング現象が
生じても安定した密封を行うことができる。 As described above, the thinly wound gasket of the present invention is
By making the thickness of the inner ring larger than the thickness of the outer ring, stable sealing can be achieved even if bending of the flange joint occurs.
第１図は、本考案のうず巻形ガスケツトの平面
図、第２図は、第１図の−断面図、第３図は
本考案のうず巻形ガスケツトをフランジ継手に適
用した右側断面図。
付号、１……ガスケツト本体、２……内輪、３
……外輪、４，５……フランジ継手、６……ボル
ト、７……内輪の外径部。
FIG. 1 is a plan view of the spiral-wound gasket of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is a right-hand sectional view of the spiral-wound gasket of the present invention applied to a flange joint. Number, 1...Gasket body, 2...Inner ring, 3
... Outer ring, 4, 5... Flange joint, 6... Bolt, 7... Outer diameter portion of inner ring.
Claims (1)
材とをうず巻状に巻いてなるガスケツト本体１に
該本体の厚さ寸法より小さい厚さの金属製内輪２
及び外輪３を嵌合したうず巻形ガスケツトにおい
て、内輪２の厚さ寸法を外輪３の厚さ寸法より
0.5mm以上厚くしたことを特徴とするうず巻形ガ
スケツト。 A gasket body 1 is formed by winding a corrugated metal thin plate in the form of a tape and a cushioning material such as asbestos paper into a spiral shape, and a metal inner ring 2 having a thickness smaller than the thickness of the gasket body 1 is attached.
And in the spiral-wound gasket fitted with the outer ring 3, the thickness of the inner ring 2 is smaller than the thickness of the outer ring 3.
Spiral-wound gasket characterized by being thicker than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15084783U JPS6058961U (en) | 1983-09-29 | 1983-09-29 | spiral gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15084783U JPS6058961U (en) | 1983-09-29 | 1983-09-29 | spiral gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6058961U JPS6058961U (en) | 1985-04-24 |
| JPH0110517Y2 true JPH0110517Y2 (en) | 1989-03-27 |
Family
ID=30334452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15084783U Granted JPS6058961U (en) | 1983-09-29 | 1983-09-29 | spiral gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6058961U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0432553Y2 (en) * | 1987-03-20 | 1992-08-05 | ||
| JP7049214B2 (en) * | 2018-08-16 | 2022-04-06 | 日本ピラー工業株式会社 | Swirl gasket |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS628687Y2 (en) * | 1981-05-29 | 1987-02-28 | ||
| JPS5824677U (en) * | 1981-08-10 | 1983-02-16 | 日立冷熱株式会社 | Spot type air conditioner |
-
1983
- 1983-09-29 JP JP15084783U patent/JPS6058961U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6058961U (en) | 1985-04-24 |
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