JP2004052817A - Flange packing - Google Patents

Flange packing Download PDF

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Publication number
JP2004052817A
JP2004052817A JP2002207441A JP2002207441A JP2004052817A JP 2004052817 A JP2004052817 A JP 2004052817A JP 2002207441 A JP2002207441 A JP 2002207441A JP 2002207441 A JP2002207441 A JP 2002207441A JP 2004052817 A JP2004052817 A JP 2004052817A
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JP
Japan
Prior art keywords
packing
flange
packing body
annular
rubber
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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
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JP2002207441A
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Japanese (ja)
Inventor
Kenji Iwata
岩田　健二
Yasutaka Fujita
藤田　泰孝
Tatsuo Naruse
成瀬　健生
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Kawamoto Pump Mfg Co Ltd
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Kawamoto Pump Mfg Co Ltd
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Priority to JP2002207441A priority Critical patent/JP2004052817A/en
Publication of JP2004052817A publication Critical patent/JP2004052817A/en
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  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive flange packing capable of bringing an effective sealing property even under a high pressure or partial pressure condition. <P>SOLUTION: The flange packing is provided with a simple structure at low costs, in which a circular metallic member 9 is built in to a circular rubber packing body having seal surfaces at both sides along a circular shape of the packing body 8 and a metal ring 12 is fit on an outer periphery of the packing body 8. Based on actions for controlling deformation of a rubber member caused by the circular metallic member 9 and the metal ring 12 in the flange packing, a rubber member of the packing body 8 is prevented from sticking out or splitting off between the seal surfaces of flanges 2 and 5 even though they are used under conditions with high pressure fluid and partial pressure. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、フランジ同士の接続の際のシールに用いられるフランジパッキンに関する。
【０００２】
【従来の技術】
給水システムの機器の接続や配管部材の接続など水（流体）が流通する部位の接続部には、一対のフランジを用いた接続が用いられている。具体的には、同構造には、接続部をなす一方の筒状の接続端と他方の筒状の接続端とのそれぞれにフランジを連結しておき、これらフランジを突き合わせ、突き合わせたフランジ同士をボルトナットで締結することにより、双方の接続端が接続されるようにしてある。
【０００３】
通常、こうしたフランジ接続では、内部を通る流体がフランジ間から漏れないようシールしている。このシール構造には、通常、両フランジのシール面間に、全体がゴム部材で環状に形成されたゴム製のフランジパッキンを介在させ、ボルトナットがもたらす締結力でフランジパッキンをシール面に密接させている。
【０００４】
【発明が解決しようとする課題】
ところが、ゴム製のフランジパッキンは、全体がゴム部材で形成されているので、負担が大きい状況で使用されるような場合、例えば内部を流通する流体が高圧のときや、両フランジの締結力のばらつきを要因に偏って圧力が作用するような場合、パッキン本体の一部がフランジのシール面間からはみ出したり、パッキン本体の一部が裂けたりして、シール性が維持できなくなるおそれがある。
【０００５】
このようなはみ出しや裂けるおそれがある場合、ゴム製のフランジパッキンでなく、全体が金属部材で形成された金属製ガスケットを両フランジのシール面間に介在させることが行われている。
【０００６】
ところが、この金属製ガスケットは、高圧力に耐えるので高いシール性をもたらすが、非常に高価なので、フランジのシールには採用されにくい難点があった。
【０００７】
そこで、本発明は、安価にして高圧や偏圧が加わる状況でも高いシール性をもたらせることができるフランジパッキンを提供することにある。
【０００８】
【課題を解決するための手段】
上記目的を達成するために請求項１の発明は、ゴム部材で形成され、両側部にシール面を有した環状のパッキン本体の内部に、パッキン本体の環状形状に沿ってそのパッキン本体をなすゴム部材と取着されるように環状の金属部材を埋め込んだことにある。
【０００９】
これにより、フランジパッキンは、環状の金属部材がもたらすゴム部材の変形を抑えようとする作用により、高圧な流体や偏圧が加わる状況で使用されても、パッキン本体がシール面間からはみ出たり裂けたりするのが抑えられる。つまり、フランジパッキンは、環状の金属部材を埋め込むだけの簡単な構造で高いシール性が得られる。
【００１０】
同じく請求項２に記載の発明は、ゴム部材で形成され、両側部にシール面を有した環状のパッキン本体の外周部に、該パッキン本体と取着させて金属環を嵌めたことにある。
【００１１】
これにより、フランジパッキンは、金属環がもたらすゴム部材の変形抑制により、高圧な流体や偏圧が加わる状況で使用されても、パッキン本体がシール面間からはみ出たり裂けたりするのが抑えられる。つまり、フランジパッキンは、金属環を嵌めるだけの簡単な構造で高いシール性が得られる。
【００１２】
請求項３に記載の発明は、さらに高いシール性が確保されるよう、パッキン本体の各シール面には、パッキン本体の環状形状に沿って複数の環状の凸部を形成したことにある。
【００１３】
【発明の実施の形態】
以下、本発明を図１ないし図３に示す第１の実施形態にもとづいて説明する。
【００１４】
図１は、例えば給水システムの一部を示し、図中１は例えば配管部材、２は当該配管部材１の一端部に連結されたフランジ、４は上記配管部材２の一端側に直接に並ぶ配管部材、５は上記配管部材２の一端部と向き合う分配管部材４の他端部に連結されたフランジを示している。
【００１５】
これらフランジ２，５が、複数のボルトナット６（図面では１つしか図示せず）で締結してある。また各フランジ２，５の互いに向き合うシール面２ａ，５ａ間にはゴム製のフランジパッキン７が介在され、両フランジ２，５（一対）間をシールしている。このゴム製のフランジパッキン７に工夫が施してある。
【００１６】
このフランジパッキン７について説明すると、８はゴム部材で全体が形成された環状のパッキン本体である。パッキン本体８には、例えば図２（ａ），（ｂ）および図３に示されるような例えば偏平な長方形状の断面を環状に成形するとともに両側部にシール面８ａを形成した円板状の構造が用いてある。なお、パッキン本体８は、フランジ２，５のシール面２ａ，５ａの大きさにマッチした大きさで形成してある。パッキン本体８の内部には、環状の金属部材、例えば環状のプレート部材９がパッキン本体８の環状形状に沿って埋め込んである。詳しくは、環状のプレート部材９には、パッキン本体８の断面形状を小さくしたような外形をもつ円形のプレート部材が用いてある。プレート部材９の埋め込みには、型を用いてパッキン本体８を成形する際、型内部に当該プレート部材９をインサートして、パッキン本体８の全体を一体に成形する構造が用いてある。これにより、環状のプレート部材９は、パッキン本体８をなすゴム部材と取着しつつ該パッキン本体８の内部に埋め込まれる。
【００１７】
このように構成されたフランジパッキン７は、ボルトナット６で締結されるフランジ２，５間に介装されると、ゴム部材の弾性により両側にあるシール面８ａがフランジ２，５に押付けられ、各シール面２ａ，５ａとの圧着からシールが行われる。このとき、環状のプレート部材９（金属部材）はゴム部材の変形を抑えようとする作用をもたらし、ゴム部材（ゴム層）が外周側へ逃げるのを抑える。
【００１８】
この環状のプレート部材９の働きにより、フランジパッキン７は、内部を高圧な流体が流通する状況で使用されても、ボルトナット６の締付力のばらつきによりフランジパッキン７の特定の部分に偏る圧力分布をもたらす偏圧が生じている状況で使用されても、パッキン本体８の外周側のゴム部分（ゴム部材で形成されている部分）がフランジ２，５のシール面２ａ，５ａ間からはみ出たり、外周部のゴム部分の一部がはみ出しにより裂けるという支障が防止される。
【００１９】
それ故、ゴム部材だけ形成されたフランジパッキンでは得られない高いシール性が確保される。しかも、こうした効果は、ゴム部材で形成されたパッキン本体８内に環状のプレート９を埋め込むという簡単、かつ廉価な構造で得られる。
【００２０】
したがって、高いシール性をもたらすフランジパッキン７を安価に提供できる。
【００２１】
図４（ａ），（ｂ）および図５は、第２の実施形態を示す。
【００２２】
本実施形態は、第１の実施形態の変形例で、パッキン本体８の両側部の各シール面８ａとして、例えばパッキン本体８の軸心を中心とした例えば複数、例えば２つの大小異なる環状の凸部１０ａ，１０ｂを有するシート面を採用したものである。
【００２３】
このように凸部１０ａ，１０ｂを有するシール面８ａとすると、たとえ両フランジ２，５の締付けに偏りが生じたとしても、凸部１０ａ，１０ｂとフランジ２，５との間には高い面圧が得られるために、高いシール性が確保される利点がある。特に各環状の凸部１０ａ，１０ｂは、フランジ２，５との間で線接触が行われるように半円状の断面形状にすると、高いシール性が確保しやすい。
【００２４】
図６（ａ），（ｂ）および図７は、第３の実施形態を示す。本実施形態は、第１や第２の実施形態に示したような金属部材を埋設する構造ではなく、外周部に金属部材を添えるという構造で、シール性の確保を実現したものである。
【００２５】
すなわち、本実施形態は、ゴム部材で形成された環状のパッキン本体、例えば第１の実施形態で述べたような偏平な長方形状の断面を環状に成形したパッキン本体８の外周部に、金属部材、すなわち金属部材で環状（短管状）に形成してなる金属環１２が設けた構造である。金属環１２には、シール性を損なわないようパッキン本体８の厚み寸法ｔ１より長さ寸法ｔ２を小さくした部品が用いてある。この金属環１２は、例えば第１の実施形態と同様、型を用いてパッキン本体８を成形する際、型の外周部に当該金属環１２をインサートして、パッキン本体８の全体を一体に成形する構造が用いてある。これにより、金属環１２は、パッキン本体８をなすゴム部材と取着しつつ該パッキン本体８の外周部に嵌め込んである。
【００２６】
このように構成されたフランジパッキン７は、ボルトナット６で締結されるフランジ２，５間に介装されると、ゴム部材の弾性により両側にあるシール面８ａがフランジ２，５に押付けられ、各シール面２ａ，５ａとの圧着からシールが行われる。このとき、環状の金属環１２はゴム部材の変形を抑えようとする作用をもたらし、ゴム部材（ゴム層）が外周側へ逃げるのを抑える。
【００２７】
この金属環１２の働きにより、第１の実施形態と同様、フランジパッキン７は、内部を高圧な流体が流通する状況で使用されても、ボルトナット６の締付力のばらつきによりフランジパッキン７の特定の部分に偏る圧力分布をもたらす偏圧が生じている状況で使用されても、パッキン本体８の外周側のゴム部分（ゴム部材で形成されている部分）がフランジ２，５のシール面２ａ，５ａ間からはみ出たり、外周部のゴム部分の一部がはみ出しにより裂けるという支障が防止される。
【００２８】
それ故、ゴム部材だけ形成されたフランジパッキンでは得られない高いシール性が確保される。しかも、こうした効果は、ゴム部材で形成されたパッキン本体８の外周部に金属環１２を設けるという簡単、かつ廉価な構造で得られる。
【００２９】
したがって、第１の実施形態と同様、高いシール性をもたらすフランジパッキン７を安価に提供できる。
【００３０】
図８（ａ），（ｂ）および図９は、第４の実施形態を示す。
【００３１】
本実施形態は、第３の実施形態の変形例で、上記第２の実施形態と同様、パッキン本体８の両側部の各シール面８ａとして、例えばパッキン本体８の軸心を中心とした例えば複数、例えば２つの大小異なる環状の凸部１０ａ，１０ｂを有するシート面を採用したものである。なお、凸部１０ａ，１０ｂがシート面８ａをなすことから、金属環１２には、シール性を損なわないよう、凸部１０ａ，１０ｂの高さ寸法よりも長さ寸法を抑えた部品が用いてある。
【００３２】
このように凸部１０ａ，１０ｂを有するシール面８ａとすると、第２の実施形態と同様、高いシール性が確保される。なお、各環状の凸部１０ａ，１０ｂは、フランジ２，５との間で線接触が行われるよう半円状の断面形状にしてあり、高いシール性が確保される構造としてある。
【００３３】
但し、第２〜第４の実施形態において、第１の実施形態と同じ部分には同一符号を附してその説明を省略した。
【００３４】
なお、本発明は上述した一実施形態に限定されることなく、本発明の主旨を逸脱しない範囲内で種々変更して実施しても構わない。例えば第２の実施形態では、環状の平坦なプレートを用いた例を挙げたが、例えばプレート部分に同心円状に円形に曲がる波形の曲げを施したプレートを用い、プレートの曲げた円状の***部分を利用して、シール用の凸部を形成してもよい。また上述した各実施形態では、配管同士をつなぐフランジ間をフランジパッキンでシールする構造を挙げているが、これに限らず、機器のフランジとそれに組合うフランジとの間のシールでもよく、フランジパッキンが使用する場所には限定されるものではない。
【００３５】
【発明の効果】
以上説明したように請求項１、請求項２の発明によれば、環状の金属部材や金属環がもたらすゴム部材の変形を抑えようとする作用により、高圧な流体や偏圧が加わる状況で使用されても、パッキン本体がフランジのシール面間からはみ出たり裂けたりするのを抑えることができる。しかも、ゴム製のパッキン本体に環状の金属部材や金属環を組合わせるだけの簡単な構造でよい。
【００３６】
それ故、安価にして高いシール性が確保できるフランジパッキンを提供することができる。
【００３７】
請求項３の発明によれば、上記効果に加え、パッキン本体のシール面が複数の環状の凸部を有して形成してあるので、フランジの締付力が大きくばらついても、高いシール性が確保できるといった効果を奏する。
【図面の簡単な説明】
【図１】本発明の第１の実施形態に係るフランジパッキンを、そのパッキンが組付けられたフランジ構造と共に示す側断面図。
【図２】（ａ）は、フランジパッキンの正面図。
（ｂ）は、同じく側断面図。
【図３】図２（ｂ）中のＡ部を拡大して示す断面図。
【図４】（ａ）は、本発明の第２の実施形態に係るフランジパッキンの正面図。
（ｂ）は、同じく側断面図。
【図５】図４（ｂ）中のＢ部を拡大して示す断面図。
【図６】（ａ）は、本発明の第３の実施形態に係るフランジパッキンの正面図。
（ｂ）は、同じく側断面図。
【図７】図６（ｂ）中のＣ部を拡大して示す断面図。
【図８】（ａ）は、本発明の第４の実施形態に係るフランジパッキンの正面図。
（ｂ）は、同じく側断面図。
【図９】図８（ｂ）中のＤ部を拡大して示す断面図。
【符号の説明】
７…フランジパッキン
８…パッキン本体
８ａ…シール面
９…環状のプレート部材（環状の金属部材）
１０ａ，１０ｂ…凸部
１２…金属環。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a flange packing used for sealing when connecting flanges.
[0002]
[Prior art]
A connection using a pair of flanges is used at a connection portion of a portion where water (fluid) flows, such as a connection of a water supply system device and a connection of a piping member. Specifically, in the same structure, a flange is connected to each of the one cylindrical connection end and the other cylindrical connection end which form a connection part, and these flanges are butted, and the butted flanges are joined together. By fastening with bolts and nuts, both connecting ends are connected.
[0003]
Usually, such a flange connection seals so that fluid passing therethrough does not leak from between the flanges. In this seal structure, usually, a rubber flange packing entirely formed of a rubber member is interposed between the sealing surfaces of both flanges, and the flange packing is brought into close contact with the sealing surface by the fastening force provided by the bolt and nut. ing.
[0004]
[Problems to be solved by the invention]
However, since the rubber flange packing is entirely formed of a rubber member, when it is used under a heavy load, for example, when the fluid flowing through the inside is at a high pressure, or when the fastening force of the two flanges is reduced. When the pressure acts due to the variation, a part of the packing body may protrude from between the sealing surfaces of the flange, or a part of the packing body may be torn, so that the sealing property may not be maintained.
[0005]
When there is a risk of such protrusion or tearing, a metal gasket made entirely of a metal member is interposed between the sealing surfaces of both flanges instead of a rubber flange packing.
[0006]
However, this metal gasket provides high sealing properties because it withstands high pressure, but is very expensive, and thus has a difficulty in being adopted as a flange seal.
[0007]
Therefore, an object of the present invention is to provide a flange packing that can be manufactured at a low cost and provide high sealing performance even in a situation where high pressure or partial pressure is applied.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 includes a rubber member which is formed of a rubber member and has a sealing body along the annular shape of the packing body inside the annular packing body having sealing surfaces on both sides. An annular metal member is embedded so as to be attached to the member.
[0009]
As a result, even when the flange packing is used in a situation where a high-pressure fluid or a partial pressure is applied due to an action of suppressing a deformation of the rubber member caused by the annular metal member, the packing body protrudes from the gap between the seal surfaces or is torn. Is suppressed. In other words, the flange packing can achieve high sealing properties with a simple structure in which the annular metal member is simply embedded.
[0010]
Another aspect of the present invention is that the metal ring is fitted to the outer peripheral portion of an annular packing body formed of a rubber member and having sealing surfaces on both sides by being attached to the packing body.
[0011]
Accordingly, even when the flange packing is used in a situation where a high-pressure fluid or a partial pressure is applied by suppressing deformation of the rubber member caused by the metal ring, it is possible to suppress the packing main body from protruding or tearing from between the sealing surfaces. That is, the flange packing can achieve high sealing performance with a simple structure in which the metal ring is simply fitted.
[0012]
A third aspect of the present invention resides in that a plurality of annular projections are formed on each sealing surface of the packing main body along the annular shape of the packing main body so as to ensure a higher sealing property.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on a first embodiment shown in FIGS.
[0014]
FIG. 1 shows a part of a water supply system, for example, in which 1 is a piping member, for example, 2 is a flange connected to one end of the piping member 1, and 4 is a piping lined directly on one end side of the piping member 2. The members 5 indicate flanges connected to the other end of the distribution pipe member 4 facing one end of the pipe member 2.
[0015]
These flanges 2 and 5 are fastened by a plurality of bolts and nuts 6 (only one is shown in the drawing). A rubber flange packing 7 is interposed between the sealing surfaces 2a and 5a of the flanges 2 and 5 facing each other to seal between the two flanges 2 and 5 (a pair). The rubber flange packing 7 is devised.
[0016]
Describing the flange packing 7, reference numeral 8 denotes an annular packing body entirely formed of a rubber member. For example, the packing body 8 has a disk-like shape in which a flat rectangular cross section as shown in FIGS. 2A, 2B and 3 is formed in a ring shape and sealing surfaces 8a are formed on both sides. Structure is used. The packing body 8 is formed in a size matching the size of the sealing surfaces 2a and 5a of the flanges 2 and 5. An annular metal member, for example, an annular plate member 9 is embedded inside the packing body 8 along the annular shape of the packing body 8. More specifically, a circular plate member having an outer shape such that the cross-sectional shape of the packing body 8 is reduced is used as the annular plate member 9. When the packing body 8 is molded using a mold, the plate member 9 is embedded into the mold so that the entire packing body 8 is integrally molded. Thereby, the annular plate member 9 is embedded in the packing body 8 while being attached to the rubber member forming the packing body 8.
[0017]
When the flange packing 7 configured as described above is interposed between the flanges 2 and 5 fastened by the bolts and nuts 6, the sealing surfaces 8a on both sides are pressed against the flanges 2 and 5 by the elasticity of the rubber member. Sealing is performed by pressure bonding with the sealing surfaces 2a and 5a. At this time, the annular plate member 9 (metal member) has an effect of suppressing deformation of the rubber member, and suppresses the rubber member (rubber layer) from escaping to the outer peripheral side.
[0018]
Due to the function of the annular plate member 9, even when the flange packing 7 is used in a situation where a high-pressure fluid flows through the inside, a pressure biased to a specific portion of the flange packing 7 due to a variation in the tightening force of the bolt and nut 6. Even when the packing is used in a situation where there is a bias that causes distribution, the rubber portion (a portion formed of a rubber member) on the outer peripheral side of the packing body 8 protrudes from between the sealing surfaces 2a and 5a of the flanges 2 and 5. In addition, the problem that a part of the rubber portion of the outer peripheral portion is torn due to protrusion is prevented.
[0019]
Therefore, a high sealing property which cannot be obtained by the flange packing formed only of the rubber member is secured. Moreover, such an effect can be obtained with a simple and inexpensive structure in which the annular plate 9 is embedded in the packing body 8 formed of a rubber member.
[0020]
Therefore, the flange packing 7 providing high sealing performance can be provided at low cost.
[0021]
4A, 4B and 5 show a second embodiment.
[0022]
The present embodiment is a modified example of the first embodiment, in which, for example, a plurality of, for example, two annular protrusions having different sizes are provided around the axis of the packing body 8 as the sealing surfaces 8a on both sides of the packing body 8, for example. This adopts a sheet surface having portions 10a and 10b.
[0023]
If the sealing surface 8a has the projections 10a and 10b, a high surface pressure is applied between the projections 10a and 10b and the flanges 2 and 5, even if the fastening of the flanges 2 and 5 is not uniform. Therefore, there is an advantage that a high sealing property is ensured. In particular, when each of the annular projections 10a and 10b has a semicircular cross-sectional shape so as to make line contact with the flanges 2 and 5, high sealing performance is easily ensured.
[0024]
FIGS. 6A, 6B and 7 show a third embodiment. In the present embodiment, a structure in which the metal member is attached to the outer peripheral portion is realized, instead of the structure in which the metal member is buried as shown in the first and second embodiments, thereby realizing the sealing performance.
[0025]
That is, in the present embodiment, a metal member is attached to an outer periphery of an annular packing body formed of a rubber member, for example, a packing body 8 having a flat rectangular cross section formed in a ring shape as described in the first embodiment. That is, this is a structure in which a metal ring 12 formed of a metal member and formed in an annular (short tubular) shape is provided. As the metal ring 12, a part having a length t2 smaller than the thickness t1 of the packing body 8 is used so as not to impair the sealing performance. For example, when the packing body 8 is formed using a mold, the metal ring 12 is inserted into the outer periphery of the mold to form the entirety of the packing body 8 integrally with the metal ring 12 as in the first embodiment. Structure is used. Thereby, the metal ring 12 is fitted to the outer peripheral portion of the packing body 8 while being attached to the rubber member forming the packing body 8.
[0026]
When the flange packing 7 configured as described above is interposed between the flanges 2 and 5 fastened by the bolts and nuts 6, the sealing surfaces 8a on both sides are pressed against the flanges 2 and 5 by the elasticity of the rubber member. Sealing is performed by pressure bonding with the sealing surfaces 2a and 5a. At this time, the annular metal ring 12 has an effect of suppressing deformation of the rubber member, and suppresses the rubber member (rubber layer) from escaping to the outer peripheral side.
[0027]
Due to the function of the metal ring 12, similarly to the first embodiment, even when the flange packing 7 is used in a situation where a high-pressure fluid flows through the inside thereof, the flange packing 7 has a variation in the tightening force of the bolt and nut 6. Even when used in a situation where a biased pressure that causes a biased pressure distribution to a particular portion is generated, the rubber portion (portion formed of a rubber member) on the outer peripheral side of the packing body 8 is sealed by the sealing surfaces 2a of the flanges 2 and 5. , 5a, or a part of the rubber portion on the outer peripheral portion is torn by the protrusion to prevent the trouble.
[0028]
Therefore, a high sealing property which cannot be obtained by the flange packing formed only of the rubber member is secured. Moreover, such an effect can be obtained with a simple and inexpensive structure in which the metal ring 12 is provided on the outer peripheral portion of the packing body 8 formed of a rubber member.
[0029]
Therefore, similarly to the first embodiment, the flange packing 7 that provides high sealing performance can be provided at low cost.
[0030]
8A, 8B and 9 show a fourth embodiment.
[0031]
This embodiment is a modified example of the third embodiment. Similar to the above-described second embodiment, each of the sealing surfaces 8a on both sides of the packing main body 8 has, for example, a plurality of sealing surfaces 8a around the axis of the packing main body 8. For example, a sheet surface having two annular projections 10a and 10b having different sizes is adopted. In addition, since the convex portions 10a and 10b form the sheet surface 8a, the metal ring 12 is made of a component whose length is smaller than the height of the convex portions 10a and 10b so as not to impair the sealing performance. is there.
[0032]
When the sealing surface 8a has the projections 10a and 10b in this manner, high sealing performance is ensured as in the second embodiment. Each of the annular projections 10a and 10b has a semicircular cross-sectional shape so that line contact is made between the flanges 2 and 5, and has a structure that ensures high sealing performance.
[0033]
However, in the second to fourth embodiments, the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0034]
The present invention is not limited to the above-described embodiment, and may be implemented with various modifications without departing from the gist of the present invention. For example, in the second embodiment, an example in which an annular flat plate is used has been described. However, for example, a plate in which a plate portion is bent concentrically in a circular waveform is used, and A convex portion for sealing may be formed using the portion. Further, in each of the above-described embodiments, the structure in which the flanges connecting the pipes are sealed with the flange packing is described. However, the present invention is not limited to this, and the seal between the flange of the device and the flange combined therewith may be used. Is not limited to the place where it is used.
[0035]
【The invention's effect】
As described above, according to the first and second aspects of the present invention, the annular metal member or the metal ring is used in a situation where a high-pressure fluid or a partial pressure is applied due to an action of suppressing deformation of the rubber member caused by the metal ring. Even if this is done, it is possible to suppress the packing body from protruding or tearing between the sealing surfaces of the flange. Moreover, a simple structure in which an annular metal member or a metal ring is combined with the rubber packing body may be used.
[0036]
Therefore, it is possible to provide a flange packing that is inexpensive and can ensure high sealing performance.
[0037]
According to the third aspect of the present invention, in addition to the above-described effects, the sealing surface of the packing body is formed to have a plurality of annular projections, so that even if the tightening force of the flange varies greatly, high sealing performance is obtained. The effect that it can secure is produced.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a flange packing according to a first embodiment of the present invention together with a flange structure to which the packing is attached.
FIG. 2A is a front view of a flange packing.
(B) is a side sectional view similarly.
FIG. 3 is an enlarged cross-sectional view showing a portion A in FIG. 2 (b).
FIG. 4A is a front view of a flange packing according to a second embodiment of the present invention.
(B) is a side sectional view similarly.
FIG. 5 is an enlarged sectional view showing a portion B in FIG. 4 (b).
FIG. 6A is a front view of a flange packing according to a third embodiment of the present invention.
(B) is a side sectional view similarly.
FIG. 7 is an enlarged sectional view showing a portion C in FIG. 6 (b).
FIG. 8A is a front view of a flange packing according to a fourth embodiment of the present invention.
(B) is a side sectional view similarly.
FIG. 9 is an enlarged cross-sectional view showing a D part in FIG. 8 (b).
[Explanation of symbols]
7 Flange packing 8 Packing body 8a Seal surface 9 Annular plate member (annular metal member)
10a, 10b ... convex part 12 ... metal ring.

Claims (3)

ゴム部材で形成され、両側部にシール面を有した環状のパッキン本体と、
前記パッキン本体の環状形状に沿って当該パッキン本体の内部にそのパッキン本体をなすゴム部材と取着されるようにして埋め込まれた環状の金属部材と
を具備してなるフランジパッキン。An annular packing body formed of a rubber member and having sealing surfaces on both sides,
A flange packing comprising a rubber member forming the packing body and an annular metal member embedded so as to be attached to the inside of the packing body along the annular shape of the packing body. ゴム部材で形成され、両側部にシール面を有する環状のパッキン本体と、
前記パッキン本体の外周部に取着されて当該パッキン本体の外周部に嵌めた金属環と
を具備してなるフランジパッキン。An annular packing body formed of a rubber member and having sealing surfaces on both sides,
A metal ring attached to an outer peripheral portion of the packing main body and fitted to an outer peripheral portion of the packing main body. 前記パッキン本体の各シール面は、前記パッキン本体の環状形状に沿う複数の環状の凸部を有してなることを特徴とする請求項１又は請求項２に記載のフランジパッキン。The flange packing according to claim 1 or 2, wherein each sealing surface of the packing body has a plurality of annular protrusions along the annular shape of the packing body.
JP2002207441A 2002-07-16 2002-07-16 Flange packing Pending JP2004052817A (en)

Priority Applications (1)

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Publication Number Publication Date
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Cited By (16)

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JP2006052755A (en) * 2004-08-10 2006-02-23 Kane Kogyo Kk Packing
JP2007224902A (en) * 2006-01-25 2007-09-06 Toyota Industries Corp Motor-driven compressor
KR200454558Y1 (en) 2008-12-05 2011-07-11 주식회사 명진티에스알 Shape retaining gasket for pipe sealing
JP2013148103A (en) * 2006-01-25 2013-08-01 Toyota Industries Corp Electric compressor
CN104121438A (en) * 2014-07-14 2014-10-29 洛阳能源密封件有限公司 Soft sealing device provided with grooves in butting surfaces and applied to connecting flange
CN105247263A (en) * 2013-05-31 2016-01-13 协和工业株式会社 Flange joining structure and seal body used therein
CN106917870A (en) * 2015-12-28 2017-07-04 大连中集物流装备有限公司 Sealing ring
JP2017166677A (en) * 2016-03-18 2017-09-21 株式会社清水合金製作所 Gasket and flange connection structure of piping material using the same
WO2017159881A1 (en) * 2016-03-18 2017-09-21 株式会社清水合金製作所 Gasket, and flange connection structure for ductwork material in which gasket is used
JP2017172788A (en) * 2016-03-18 2017-09-28 株式会社清水合金製作所 Gasket and flange connection structure of piping material using the same
JP2018128048A (en) * 2017-02-07 2018-08-16 株式会社清水合金製作所 Gasket and flange connection structure of piping material using the same
JP2018149170A (en) * 2017-03-14 2018-09-27 ニプロ株式会社 Syringe type ejection device
CN108884939A (en) * 2016-03-18 2018-11-23 株式会社清水合金制作所 The flange joint construction of gasket and the piping machine components using it
KR20190127282A (en) * 2018-05-04 2019-11-13 주식회사 명진티에스알 Product Method of An Airtight Gasket of Pipe Flange
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Cited By (23)

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JP2006052755A (en) * 2004-08-10 2006-02-23 Kane Kogyo Kk Packing
JP2007224902A (en) * 2006-01-25 2007-09-06 Toyota Industries Corp Motor-driven compressor
JP2013148103A (en) * 2006-01-25 2013-08-01 Toyota Industries Corp Electric compressor
US10371147B2 (en) 2006-01-25 2019-08-06 Kabushiki Kaisha Toyota Jidoshokki Electrically-driven compressor
KR200454558Y1 (en) 2008-12-05 2011-07-11 주식회사 명진티에스알 Shape retaining gasket for pipe sealing
KR101867145B1 (en) * 2013-05-31 2018-06-12 교와 고교 가부시키가이샤 Flange joining structure and seal body used therein
CN105247263A (en) * 2013-05-31 2016-01-13 协和工业株式会社 Flange joining structure and seal body used therein
KR20160014006A (en) * 2013-05-31 2016-02-05 교와 고교 가부시키가이샤 Flange joining structure and seal body used therein
JP2017044346A (en) * 2013-05-31 2017-03-02 協和工業株式会社 Seal body
US10145498B2 (en) 2013-05-31 2018-12-04 Kyowa Industry Co., Ltd. Flange joining structure and seal body used therein
CN104121438A (en) * 2014-07-14 2014-10-29 洛阳能源密封件有限公司 Soft sealing device provided with grooves in butting surfaces and applied to connecting flange
CN106917870A (en) * 2015-12-28 2017-07-04 大连中集物流装备有限公司 Sealing ring
WO2017159881A1 (en) * 2016-03-18 2017-09-21 株式会社清水合金製作所 Gasket, and flange connection structure for ductwork material in which gasket is used
CN108884939A (en) * 2016-03-18 2018-11-23 株式会社清水合金制作所 The flange joint construction of gasket and the piping machine components using it
JP2017172788A (en) * 2016-03-18 2017-09-28 株式会社清水合金製作所 Gasket and flange connection structure of piping material using the same
JP2017166677A (en) * 2016-03-18 2017-09-21 株式会社清水合金製作所 Gasket and flange connection structure of piping material using the same
US10907735B2 (en) 2016-03-18 2021-02-02 Shimizu Alloy Mfg. Co., Ltd. Gasket and flange connection structure for plumbing instrument using the same
JP2018128048A (en) * 2017-02-07 2018-08-16 株式会社清水合金製作所 Gasket and flange connection structure of piping material using the same
JP2018149170A (en) * 2017-03-14 2018-09-27 ニプロ株式会社 Syringe type ejection device
US11638791B2 (en) 2017-04-04 2023-05-02 Nipro Corporation Syringe type ejection device
KR20190127282A (en) * 2018-05-04 2019-11-13 주식회사 명진티에스알 Product Method of An Airtight Gasket of Pipe Flange
KR102083724B1 (en) * 2018-05-04 2020-03-02 주식회사 명진티에스알 Product Method of An Airtight Gasket of Pipe Flange
WO2022224620A1 (en) * 2021-04-22 2022-10-27 ヤマシンフィルタ株式会社 Filtration element and strainer

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