JPH03117782A - Spiral gasket and its manufacture - Google Patents
Spiral gasket and its manufactureInfo
- Publication number
- JPH03117782A JPH03117782A JP1256012A JP25601289A JPH03117782A JP H03117782 A JPH03117782 A JP H03117782A JP 1256012 A JP1256012 A JP 1256012A JP 25601289 A JP25601289 A JP 25601289A JP H03117782 A JPH03117782 A JP H03117782A
- Authority
- JP
- Japan
- Prior art keywords
- gasket
- inner ring
- gasket body
- rigid wire
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 6
- 229910000639 Spring steel Inorganic materials 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 101100295776 Drosophila melanogaster onecut gene Proteins 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Joints With Pressure Members (AREA)
- Gasket Seals (AREA)
Abstract
Description
【発明の詳細な説明】
発明の技術分野
本発明は、例えば流体が蒸気、水または油等の管継手部
分のシール用として用いられる渦巻形ガスケット及びそ
の製造方法に関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a spiral gasket used for sealing a pipe joint part where the fluid is, for example, steam, water or oil, and a method for manufacturing the same.
発明の技術的背景ならびにその問題点
配管の管継手部分では、第４図に示すように、両フラン
ジ１，１間に渦巻形ガスケットＧを介装して複数のボル
ト２により締付け、この渦巻形ガスケットＧと７ランジ
１．１とを互いに密着させて、内部通路３を流れる高圧
流体等が外部に洩れないようにシールすることが一般に
行われている。Technical Background of the Invention and Problems Therein, as shown in FIG. Generally, the gasket G and the seven flange 1.1 are brought into close contact with each other to seal the high-pressure fluid flowing through the internal passage 3 from leaking to the outside.
この渦巻形ガスケットＧについては、月Ｓ８２４０４
（管フランジ用うず巻形ガスケット）に規定されていが
、第５図に示すように、金属製の薄板からなる第１テー
プ４と、フィラー材からなる第２テープ５とを渦巻状に
巻回して構成したガスケット本体６を備え、更に必要に
応じて、ガスケット本体６の内周面側または外周面側に
内輪７゛または外輪８の一方または双方を離脱不能に装
着したものである。For this spiral gasket G, please refer to Month S82404
(Spiral-wound gasket for pipe flanges), as shown in Fig. 5, a first tape 4 made of a thin metal plate and a second tape 5 made of a filler material are wound in a spiral shape. The gasket body 6 has a gasket main body 6 constructed as shown in FIG.
ここに、前記第１テープ４は、横断面が略ｒＶＪ字状ま
たは略ｒＶＪの字を２段重ねした略ｒＷＪ字形状等の波
形金属製薄板であり、第２テープ５は、従来からフィラ
ー材として一般に使用されている石綿紙、膨張黒鉛テー
プ、四フッカエチレン樹脂テープ等から構成されている
。Here, the first tape 4 is a corrugated metal thin plate having a cross section approximately rVJ-shaped or approximately rWJ-shaped with two stacked approximately rVJ characters, and the second tape 5 is conventionally made of a filler material. It is made of asbestos paper, expanded graphite tape, tetrafluoroethylene resin tape, etc., which are commonly used as materials.
上記第５図に示す内輪７゛及び外輪８を備えた渦巻形ガ
スケットＧの製造には、一般に次の２つの方法が採用さ
れていた。The following two methods have generally been adopted for manufacturing the spiral gasket G having the inner ring 7'' and the outer ring 8 shown in FIG. 5 above.
即ち、第１の製法は、巻取機（図示せず）に内輪７゛を
固定し、この固定した内輪７°に第１テープ４の始端部
を点溶接して固定した後、巻取機を回転させて内輪７゛
に第１テープ４を１〜２回巻き付ける。しかる後、第１
テープ４と第２テープ５を重ね合わせつつ所定の幅寸法
になるまで渦巻状に巻き付けてけ、ガスケット本体６を
成形する。そして、巻き終り部分は、第１テープ４のみ
を１〜２回巻き付け、第１テープ４同志を相互に点溶接
する。この時、第１テープ４の終端部は溶接せずにフリ
ーの状態にしておく。次いで、巻取機から内輪７′付き
ガスケット本体６を取外し、第１テープ４のフリー状態
の終端部を利用して、ガスケット本体６の外周面に外輪
８を嵌め込むようにしたものである。That is, the first manufacturing method involves fixing the inner ring 7° to a winding machine (not shown), fixing the starting end of the first tape 4 to the fixed inner ring 7° by spot welding, and then attaching the inner ring 7 to the winding machine. is rotated to wrap the first tape 4 around the inner ring 7' once or twice. After that, the first
The gasket body 6 is formed by overlapping the tape 4 and the second tape 5 and winding them in a spiral shape until they reach a predetermined width dimension. At the end of the winding, only the first tape 4 is wound once or twice, and the first tapes 4 are spot-welded to each other. At this time, the terminal end of the first tape 4 is left free without being welded. Next, the gasket main body 6 with the inner ring 7' is removed from the winding machine, and the outer ring 8 is fitted onto the outer peripheral surface of the gasket main body 6 using the free end portion of the first tape 4.
第２の製法は、先ずガスケット本体６を形成する。即ち
、巻取機に第１テープを１〜２回巻き付けるとともに数
箇所点溶接して固定し、次いで第１テープ４と第２テー
プ５とを重ね合わせ、所定の寸法幅まで渦巻状に巻き付
け、しかる後、巻き終わり部分は、第１テープ４のみを
１〜２回巻き付は数箇所点溶接して固定する。そして、
このガスケット本体５の外周部に外輪８を嵌め込む。こ
の場合、内輪７゛が嵌合されていないため、この嵌め込
みは比較的容易に行うことができる。次いで、ガスケッ
ト本体６の内部に、この内径より若干小径の外径を有す
る内輪７°を配置し、この内輪７′の外周面を機械的に
かしめて外輪８付きガスケット本体６の内周面に内輪７
゛を固定するようにしたものである。In the second manufacturing method, first, the gasket body 6 is formed. That is, the first tape is wound around the winder once or twice and fixed by spot welding at several places, then the first tape 4 and the second tape 5 are overlapped and wound spirally to a predetermined width. Thereafter, the end of the winding is fixed by wrapping only the first tape 4 once or twice and spot welding at several locations. and,
An outer ring 8 is fitted into the outer periphery of this gasket body 5. In this case, since the inner ring 7' is not fitted, this fitting can be performed relatively easily. Next, an inner ring 7° having an outer diameter slightly smaller than the inner diameter is placed inside the gasket body 6, and the outer circumferential surface of this inner ring 7' is mechanically caulked to the inner circumferential surface of the gasket body 6 with the outer ring 8 attached. Inner ring 7
゛ is fixed.
しかしながら、上記第１の製法の場合、外輪８の嵌め込
み作業は、内輪７°が先に装着されてガスケット本体６
は殆ど撓まず、しかも外輪８の内径はガスケット本体６
の外径よりやや小さくなされているため、手動であるか
自動であるかを問わずかなり困難で、かなりの時間を要
する。However, in the case of the first manufacturing method, when fitting the outer ring 8, the inner ring 7° is fitted first and the gasket body 6
The inner diameter of the outer ring 8 is almost the same as that of the gasket body 6.
It is quite difficult and takes a considerable amount of time, regardless of whether it is done manually or automatically.
また、第２の製法で製造された渦巻形ガスケットは、ガ
スケット本体６の内周面と内輪７゛の外周面との間に隙
間が生じてしまい、この結果、外輪７°がガスケット本
体６から外れ易いばかりでなく、管継手部分等に取付け
て締付けた時、ガスケット本体６が内方に容易に変形し
ての内周側の密度が低下してｔ、Ｊい、ガスケットとし
てのシール性が悪化してしまうことがあるといった問題
点があった。In addition, in the spiral gasket manufactured by the second manufacturing method, a gap is created between the inner circumferential surface of the gasket body 6 and the outer circumferential surface of the inner ring 7°, and as a result, the outer ring 7° is separated from the gasket body 6. Not only does it come off easily, but when it is attached to a pipe joint or the like and tightened, the gasket body 6 easily deforms inward, reducing the density on the inner circumferential side and impairing the sealing performance of the gasket. There was a problem that it could get worse.
発明の目的
本発明は、上述した問題点に鑑みてなされたものであっ
て、管継手部分等に取付けて締付けた時にガスケットと
して充分なシール性を有し、しかも比較的簡単かつ容易
に製作することができるばかりでなく加工工数の削減を
図った、少なくとも内輪を有する渦巻形ガスケット及び
その製造方法を提供することを目的とする。Purpose of the Invention The present invention has been made in view of the above-mentioned problems, and provides a gasket that has sufficient sealing performance as a gasket when attached and tightened to a pipe joint, etc., and is relatively simple and easy to manufacture. It is an object of the present invention to provide a spiral gasket having at least an inner ring and a method for manufacturing the same, which not only enables the manufacturing of the gasket but also reduces the number of processing steps.
発明の概要
上述した目的を達成するために、本発明に係る渦巻形ガ
スケットは、横断面波形で金属製の第１テープとフィラ
ー材よりなる第２テープとを重ね合せ渦巻状に巻回して
構成したガスケット本体の内部に、このガスケット本体
を補強する内輪を装着した渦巻形ガスケットにおいて、
前記内輪の外径を前記ガスケット本体の内径よりやや小
さくするとともに該内輪の外周面に凹条部を形成し、こ
の凹条部と前記ガスケット本体の内周面の波形凹部との
間に、前記ガスケット本体の内径よりやや大きな外径で
、かつ前記内輪の凹条部の外径とほぼ等しい内径の剛性
線材を介装したことを特徴とするものである。Summary of the Invention In order to achieve the above-mentioned object, a spiral gasket according to the present invention is constructed by overlapping and spirally winding a first tape made of metal and a second tape made of a filler material with a corrugated cross section. In a spiral gasket, an inner ring is installed inside the gasket body to reinforce the gasket body.
The outer diameter of the inner ring is made slightly smaller than the inner diameter of the gasket body, and a groove is formed on the outer circumferential surface of the inner ring, and between the groove and the wavy recess on the inner circumference of the gasket body, The gasket is characterized by interposing a rigid wire rod having an outer diameter slightly larger than the inner diameter of the gasket body and an inner diameter approximately equal to the outer diameter of the grooved portion of the inner ring.
またその製造方法は、横断面波形の金属製の第１テープ
とフィラー材よりなる第２テープとを重ね合わせ渦巻状
に巻回してガスケット本体を形成し、このガスケット本
体の内周面の波形凹部内に剛性線材を嵌着し、前記ガス
ケット本体の内径よりやや小さな外径で外周面に前記線
材の内径とほぼ等しい外径の凹条部を形成した内輪を、
この凹条部内に前記剛性線材を位置させて前記ガスケッ
ト本体の内部に装着することを特徴とするものである。In addition, the manufacturing method includes forming a gasket body by overlapping and spirally winding a first metal tape having a corrugated cross section and a second tape made of a filler material, and forming a corrugated recess on the inner peripheral surface of the gasket body. An inner ring having a rigid wire fitted therein and a concave groove portion having an outer diameter slightly smaller than the inner diameter of the gasket body and having an outer diameter approximately equal to the inner diameter of the wire on the outer circumferential surface;
It is characterized in that the rigid wire is positioned within the groove and is mounted inside the gasket body.
このような構成の渦巻形ガスケットにあっては、ガスケ
ット本体の内周面と内輪の外周面との間に介装した剛性
線材を介して、内輪の離脱を確実に防止するとともに、
管継手部分等に取付けて締付けた時のガスケット本体の
内方への変形を極力制限してこの内周側の密度の低下を
防止することができる。In a spiral gasket having such a configuration, a rigid wire interposed between the inner peripheral surface of the gasket body and the outer peripheral surface of the inner ring reliably prevents the inner ring from coming off.
Inward deformation of the gasket body when it is attached to a pipe joint or the like and tightened can be restricted as much as possible, thereby preventing a decrease in density on the inner peripheral side.
また、渦巻形ガスケットの製造方法にあっては、予め製
作しておいたガスケット本体の内部に、剛性線材及び内
輪を該剛性線材を弾性変形させつつ容易かつ確実に装着
することができるばかりでなく、ガスケット本体の外部
に外輪を嵌め込んだ内外輪付き渦巻状ガスケットも、比
較的簡単かつ容易に製作するようにすることができる。In addition, the method for manufacturing a spiral gasket not only allows the rigid wire and the inner ring to be easily and reliably attached to the inside of the gasket body that has been manufactured in advance while elastically deforming the rigid wire. A spiral gasket with inner and outer rings, in which an outer ring is fitted to the outside of the gasket body, can also be produced relatively simply and easily.
発明の詳細な説明 以下、図面を参照して本発明の一実施例を説明する。Detailed description of the invention Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図及び第２図は、それぞれ異なる本発明に係る渦巻
形ガスケットの一実施例を示す断面図であり、前記第４
図及び第５図に示す部材と共通する部材には同一符号を
付している。1 and 2 are cross-sectional views showing different embodiments of the spiral gasket according to the present invention, and FIG.
Components common to those shown in the figures and FIG. 5 are given the same reference numerals.
第１図に示す第１の実施例において、渦巻形ガスケット
Ｇは、金属製の薄板からなる第１テープ４と、フィラー
材からなる第２テープ５とを渦巻状に巻回して構成した
ガスケット本体６と、このガスケット本体６の内周面側
に装着した中空平板状の内輪７と、このガスケット本体
６と内輪７との間に介装したリング状の剛性線材９から
構成されている。In the first embodiment shown in FIG. 1, the spiral gasket G is a gasket body formed by spirally winding a first tape 4 made of a thin metal plate and a second tape 5 made of a filler material. 6, a hollow flat plate-shaped inner ring 7 attached to the inner peripheral surface of the gasket body 6, and a ring-shaped rigid wire 9 interposed between the gasket body 6 and the inner ring 7.
即ち、前記内輪７の外周面の幅方向はぼ中央部には、連
続した凹条部７ａが周設されているとともに、外周の上
下稜部は面取りが施されてここに尖頭状のテーバ部７ｂ
が設けられ、更にこの内輪７の外径Ｄ２は前記ガスケッ
ト本体６の内径ｄ＋より僅かに小さく構成されている。That is, a continuous grooved portion 7a is provided around the widthwise central portion of the outer circumferential surface of the inner ring 7, and the upper and lower ridges of the outer circumference are chamfered to form a pointed taper. Part 7b
Further, the outer diameter D2 of the inner ring 7 is slightly smaller than the inner diameter d+ of the gasket body 6.
また前記剛性線材９は、例えばワンカットされた金属リ
ングやスプリング鋼等によって構成され、その外径Ｄ３
はガスケット本体６の内周面の内径ｄ、より大きく、内
径ｄ３は前記内輪７の凹条部７ａの外径ｄ２とほぼ等し
く構成されている。そして、前記ガスケット本体６と内
輪７とは、波形凹部６ａと凹条部７ａとが互いに対面す
るよう配置され、この波形凹部６ａと凹条部７ａとの間
に位置して剛性線材９が装着されている。The rigid wire 9 is made of, for example, a one-cut metal ring or spring steel, and has an outer diameter D3.
is larger than the inner diameter d of the inner circumferential surface of the gasket body 6, and the inner diameter d3 is configured to be approximately equal to the outer diameter d2 of the grooved portion 7a of the inner ring 7. The gasket main body 6 and the inner ring 7 are arranged such that the wave-shaped recesses 6a and the grooved lines 7a face each other, and the rigid wire 9 is installed between the wave-shaped recesses 6a and the grooves 7a. has been done.
これにより、この剛性線材９を介して、ガスケット本体
６から内輪７が離脱してしまうことがなく、しかも管継
手部分等に取付けて締付けた時のガスケット本体６の内
方への変形を極力防止してこの内周側の密度が低下して
しまうことがないようなされている。This prevents the inner ring 7 from separating from the gasket body 6 via the rigid wire 9, and also prevents the gasket body 6 from deforming inward as much as possible when it is attached to a pipe joint and tightened. This prevents the density on the inner peripheral side from decreasing.
第２図は、いわゆる内外輪付き渦巻形ガスケットの適応
した他の実施例を示すもので、前記第１図に示す実施例
に外輪８が装着されている。FIG. 2 shows another embodiment to which a so-called spiral gasket with inner and outer rings is applied, in which an outer ring 8 is attached to the embodiment shown in FIG.
即ち、前記ガスケット本体６の外周面の厚さ方向はぼ中
央に設けられている波形凸部６ｂに、内周面に形成した
凹部８ａを係合させて外輪８を配置したものである。That is, the outer ring 8 is disposed such that a concave portion 8a formed on the inner circumferential surface is engaged with a wave-shaped convex portion 6b provided approximately at the center in the thickness direction of the outer circumferential surface of the gasket body 6.
次に、前記第１図及び第２図に示す実施例の製造例を第
３図を参照して説明する。Next, a manufacturing example of the embodiment shown in FIGS. 1 and 2 will be described with reference to FIG. 3.
先ず、巻取機（図示せず）に第１テープ４を１〜２回巻
き付けるとともに数箇所点溶接して固定し、次いで第１
テープ４と第２テープ５とを重ね合わせ、所定の寸法幅
まで渦巻状に巻き付け、しかる後、巻き終わり部分は、
第１テープ４のみを１〜２回巻き付は数箇所点溶接して
固定することにより、ガスケット本体６を製作する。First, the first tape 4 is wound once or twice around a winder (not shown) and fixed by spot welding in several places.
The tape 4 and the second tape 5 are overlapped and wound spirally to a predetermined width, and then the end of the winding is
The gasket body 6 is manufactured by wrapping only the first tape 4 once or twice and fixing it by spot welding at several locations.
第１図の実施例の場合には、次いで、このガスケット本
体６の内周面の波形凹部６ａ内に剛性線材９を嵌着する
。第２図に示す実施例の場合には、第３図（ａ）に示す
ように、ガスケット本体６の外周面の波形凸部６ｂに、
内周面に形成した凹条部８ａを係合させて外輪８を装着
した後に、剛性線材９を嵌着する。In the case of the embodiment shown in FIG. 1, the rigid wire 9 is then fitted into the corrugated recess 6a of the inner peripheral surface of the gasket body 6. In the case of the embodiment shown in FIG. 2, as shown in FIG.
After the outer ring 8 is mounted by engaging the grooves 8a formed on the inner circumferential surface, the rigid wire 9 is fitted.
この状態で、同図（ａ）に示すように、ガスケット本体
６の内周面内に内輪７の一部を嵌入させ、内輪７に圧力
Ｐを加えてこれをガスケット本体６の内部に押し込むこ
とにより、同図（ｂ）に示すように、剛性部材９をその
弾性力に抗して内輪６のテーパ部６ｂに沿って拡張させ
る。そして、更に押し込むことにより、同図（Ｃ）に示
すように、内輪７の凹条部７ａ内に剛性線材９を位置さ
せて渦巻形ガスケットの製造を完了するのである。In this state, a part of the inner ring 7 is fitted into the inner peripheral surface of the gasket body 6, and pressure P is applied to the inner ring 7 to push it into the inside of the gasket body 6, as shown in FIG. As a result, the rigid member 9 is expanded along the tapered portion 6b of the inner ring 6 against its elastic force, as shown in FIG. 6(b). By further pushing the gasket, the rigid wire 9 is positioned within the concave portion 7a of the inner ring 7, as shown in FIG.
発明の効果
以上述べたように、本発明に係る渦巻状ガスケットによ
れば、ガスケット本体の内周面と内輪の外周面との間に
介装した剛性線材を介して、内輪がガスケット本体から
離脱してしまうことを確実に防止するとともに、管継手
部分等に取付けて締付けた時にガスケット本体の変形を
極力制限してガスケットとしての充分なシール性を確保
することができる。Effects of the Invention As described above, according to the spiral gasket of the present invention, the inner ring can be separated from the gasket main body via the rigid wire interposed between the inner circumferential surface of the gasket main body and the outer circumferential surface of the inner ring. It is possible to reliably prevent this from happening, and to limit deformation of the gasket body as much as possible when it is attached to a pipe joint or the like and tightened, thereby ensuring sufficient sealing performance as a gasket.
また、渦巻形ガスケットの製造方法にあっては、予め製
作しておいたガスケット本体の内部に、剛性線材及び内
輪を容易に装着することができ、これによって生産ロッ
トを増加させて生産効率を向上させるとともに、内外輪
材は渦巻状ガスケットも、比較的簡単かつ容易に製作す
るようにすることができるといった効果がある。In addition, in the manufacturing method of spiral gaskets, the rigid wire and inner ring can be easily installed inside the gasket body that has been manufactured in advance, thereby increasing production lots and improving production efficiency. In addition, there is an effect that spiral gaskets for the inner and outer ring materials can be manufactured relatively simply and easily.
第１図及び第２図は本発明に係る渦巻形ガスケットの夫
々異なる実施例を示す断面図、第３図は本発明に係る製
造方法を工程順に示す断面図、第４図は渦巻形ガスケッ
トの使用状態を示す断面図、第５図は従来例を示す断面
図である。
４・・・第１テープ、５・・・第２テープ、６・・・ガ
スケット本体、６ａ・・・波形凹部、７・・・内輪、７
ａ・・・凹条部、８・・・外輪、９・・・剛性線材。1 and 2 are cross-sectional views showing different embodiments of the spiral gasket according to the present invention, FIG. 3 is a cross-sectional view showing the manufacturing method according to the present invention in the order of steps, and FIG. 4 is a cross-sectional view of the spiral gasket according to the present invention. FIG. 5 is a sectional view showing a conventional example. 4... First tape, 5... Second tape, 6... Gasket body, 6a... Waveform recess, 7... Inner ring, 7
a... Concave portion, 8... Outer ring, 9... Rigid wire rod.
Claims (1)
なる第２テープとを重ね合せ渦巻状に巻回して構成した
ガスケット本体の内部に、このガスケット本体を補強す
る内輪を装着した渦巻形ガスケットにおいて、前記内輪
の外径を前記ガスケット本体の内径よりやや小さくする
とともに該内輪の外周面に凹条部を形成し、この凹条部
と前記ガスケット本体の内周面の波形凹部との間に、前
記ガスケット本体の内径より大きな外径で、かつ前記内
輪の凹条部の外径とほぼ等しい内径のリング状の剛性線
材を介装したことを特徴とする渦巻形ガスケット。 ２）横断面波形で金属製の第１テープとフィラー材より
なる第２テープとを重ね合わせ渦巻状に巻回してガスケ
ット本体を形成し、このガスケット本体の内周面の波形
凹部内にリング状の剛性線材を嵌着し、前記ガスケット
本体の内径よりやや小さな外径で外周面に前記剛性線材
の内径とほぼ等しい外径の凹条部を形成した内輪を、こ
の凹条部内に前記剛性線材を位置させて前記ガスケット
本体の内部に装着することを特徴とする渦巻形ガスケッ
トの製造方法。[Claims] 1) The gasket body is reinforced inside the gasket body, which is constructed by overlapping and spirally winding a first tape made of metal and a second tape made of filler material with a corrugated cross section. In a spiral gasket equipped with an inner ring, the outer diameter of the inner ring is made slightly smaller than the inner diameter of the gasket body, and a groove is formed on the outer circumferential surface of the inner ring, and the groove and the inner circumferential surface of the gasket body are formed. A ring-shaped rigid wire rod having an outer diameter larger than the inner diameter of the gasket body and an inner diameter substantially equal to the outer diameter of the concave strip of the inner ring is interposed between the corrugated concave portion and the spiral concave portion. gasket. 2) A first tape made of metal and a second tape made of filler material are overlapped and spirally wound to form a gasket body with a corrugated cross-sectional shape, and a ring-shaped tape is formed in the corrugated recess on the inner peripheral surface of the gasket body. A rigid wire is fitted into the inner ring, and a groove is formed on the outer circumferential surface with a slightly smaller outer diameter than the inner diameter of the gasket body, and the outer diameter is approximately equal to the inner diameter of the rigid wire. A method for manufacturing a spiral gasket, characterized in that the spiral gasket is mounted inside the gasket body by positioning the gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1256012A JPH03117782A (en) | 1989-09-29 | 1989-09-29 | Spiral gasket and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1256012A JPH03117782A (en) | 1989-09-29 | 1989-09-29 | Spiral gasket and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03117782A true JPH03117782A (en) | 1991-05-20 |
Family
ID=17286685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1256012A Pending JPH03117782A (en) | 1989-09-29 | 1989-09-29 | Spiral gasket and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03117782A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315306A (en) * | 2004-04-27 | 2005-11-10 | Nippon Valqua Ind Ltd | Gasket |
| CN110185798A (en) * | 2019-06-24 | 2019-08-30 | 江苏省特种设备安全监督检验研究院 | A kind of self-sealed alloy double bellow seal Composition spacer |
-
1989
- 1989-09-29 JP JP1256012A patent/JPH03117782A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315306A (en) * | 2004-04-27 | 2005-11-10 | Nippon Valqua Ind Ltd | Gasket |
| CN110185798A (en) * | 2019-06-24 | 2019-08-30 | 江苏省特种设备安全监督检验研究院 | A kind of self-sealed alloy double bellow seal Composition spacer |
| CN110185798B (en) * | 2019-06-24 | 2024-02-27 | 江苏省特种设备安全监督检验研究院 | Self-sealing alloy dual-corrugated sealing composite gasket |
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