WO2009142110A1 - メタルガスケット - Google Patents
メタルガスケット Download PDFInfo
- Publication number
- WO2009142110A1 WO2009142110A1 PCT/JP2009/058607 JP2009058607W WO2009142110A1 WO 2009142110 A1 WO2009142110 A1 WO 2009142110A1 JP 2009058607 W JP2009058607 W JP 2009058607W WO 2009142110 A1 WO2009142110 A1 WO 2009142110A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outer ring
- inner ring
- metal gasket
- ring
- metal
- 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.)
- Ceased
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
- F16J15/0893—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing the packing having a hollow profile
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/20—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of metal
Definitions
- the present invention relates to a metal gasket used as a sealing member under severe conditions such as various pipes and machinery in the nuclear power field and semiconductor field, such as high temperature and pressure, and vacuum, and particularly relates to a metal gasket having a good sealing property with a low tightening force.
- a metal gasket made of a metal material is generally used.
- an O-ring shaped gasket that is, a gasket that is not a sheet shape
- it is generally used in a state of being cut off in the gasket mounting groove at the time of mounting, but in the case of an O-ring shaped gasket made of rubber or elastomer Is greatly deformed with a low tightening load, so if the bolts are tightened in stages, the bolts can be easily turned around when the gasket is tightened. On the other hand, when the bolt groove is closed, the bolt does not immediately turn. Or almost no longer turns.
- metal hollow O-rings and spring-loaded metal C-rings are also known as metal O-ring shaped gaskets.
- metal hollow O-ring or a spring-loaded metal C-ring it is difficult to understand the change at the moment when the bolt is in the groove cut-off state, and it is difficult to manage manual bolt tightening.
- metal hollow O-rings and spring-loaded metal C-rings it can be easily deformed by changing the thickness and dimensions of the part that defines the overall shape such as “O” and “C”. it can.
- a spring-loaded C-ring it can be easily deformed by appropriately changing the thickness of the spring incorporated therein. However, if the thickness of the spring or the like is changed, the reaction force or the stress on the seal surface is also impaired, and there is a problem that the sealing performance is impaired.
- a soft layer (metal plating, rubber coating, etc.) is provided on the sealing surface of the metal gasket, or a shape that causes stress concentration on the sealing surface of the metal gasket is employed. That is, in Patent Document 1, a protruding portion is provided on the seal surface, and in Patent Document 2, a concave groove is provided on the seal surface so that stress concentration occurs.
- the present invention can obtain a high sealing performance with a low tightening force, and can easily manage bolt tightening even when bolt tightening is performed manually. Furthermore, it aims at providing the metal gasket which does not have a possibility of scratching the other flange surface.
- the metal gasket according to the present invention for achieving the above object is A metal gasket composed of an outer ring formed in a substantially C-shaped cross section by a circumferential opening, and an inner ring arranged in a fitted state inside the outer ring,
- the inner ring is formed of a polygonal cross section, and a pair of opposite corners in the inner ring are respectively disposed on inner peripheral surfaces on both sides of the opening in the outer ring. It is said.
- the corner portion of the inner ring abuts against the outer ring and is partially pressed strongly, and the other portions gently abut against the outer ring.
- the overall tightening force can be low.
- the said inner ring is a cross-sectional square body.
- the sealing performance can be enhanced by an inner ring with a simple configuration.
- a top portion of the inner ring polygon is formed in an arc shape.
- top is an acute angle, excessive stress concentration occurs, which may cause damage to the outer ring and damage to the seal surface of the mating flange, but if the top is arcuate, They can be suppressed.
- the metal constituting the inner ring is formed of a metal harder than the metal constituting the outer ring. If the inner ring is harder than the outer ring, the inner ring with high hardness presses the inner ring with low hardness outward and the conformability to the mating member by the outer ring with low hardness is good. The property is also good.
- a soft layer can be provided on at least the outer peripheral surface of the outer ring.
- the soft layer may be a resin or an appropriate rubber, or a plated layer made of a soft metal.
- the conformability to the mating member can be maintained well.
- the overall tightening load required to obtain the same sealing performance as that of the conventional metal gasket is reduced, and the deformation amount when a constant load is applied is increased.
- the bolt when the bolt is tightened by hand, the bolt hardly turns at the moment when the bolt groove is cut off. Easy to manage.
- the outer peripheral surface of the outer ring is a curved surface having no protruding portion, there is no risk of scratching the mating flange surface.
- FIG. 1 is a cross-sectional view of a metal gasket according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a procedure for forming the outer ring shown in FIG.
- FIG. 3 is a partially enlarged sectional view showing a state where the metal gasket of FIG. 1 is used for a flange portion such as a pipe.
- FIG. 1 is a half cross-sectional view illustrating a metal gasket according to an embodiment of the present invention.
- the metal gasket 10 includes an outer ring 12 having a substantially C-shaped cross section and a hollow inner ring 14 having a substantially quadrangular cross section.
- the metal constituting the inner ring 14 is preferably formed of a metal harder than the metal constituting the outer ring 12.
- the outer ring 12 is made of aluminum called a so-called soft metal
- the inner ring 14 is made of a metal harder than aluminum, such as stainless steel.
- the outer ring 12 disposed on the sealing surface has a lower hardness than the inner ring 14, and thus the outer ring 12 is easily deformed. Further, as shown in FIG. 2, the outer ring 12 is formed by preparing an aluminum plate 12 'punched in a ring shape and a flat plate shape in advance and winding the aluminum plate 12' in a pipe shape. Yes.
- the inner ring 14 is formed by, for example, preparing a rectangular pipe having a rectangular cross section and welding the both ends after the rectangular pipe is drawn in an annular shape. Further, the inner ring 14 made of this rectangular tube has a pair of corner portions 14a and 14b arranged in the axial direction (vertical direction) and another pair of corner portions 14c and 14d arranged in the horizontal direction (radial direction). It is formed as shown in FIG. Therefore, first, after forming the annular inner ring 14 and winding the outer ring 12 in a manner covering the outer side of the inner ring 14, as shown in FIG. 12 can be formed. Note that the method for creating and assembling the outer ring 12 and the inner ring 14 is not limited to the above-described embodiment.
- the outer ring 12 can be strongly pressed from the inside.
- the inner ring 14 functions as an elastic element
- the outer ring 12 functions as a sealing element.
- such a metal gasket 10 is interposed, for example, in the flange surface 22 of the joint portion of the pipes 20 and 21 used for semiconductor manufacture, and is tightened with a bolt 24 or the like.
- the surface of the outer ring 12 is coated with polytetrafluoroethylene (PTFE), polyimide, or the like, or plated with silver, nickel, copper, or the like. It is also possible.
- the sealing performance can be maintained with the overall tightening force kept low. Can be maintained.
- the outer ring 12 has a structure in which the inner peripheral surface is pressed by a pair of corner portions 14a and 14b, stress concentrates on this portion, and the overall tightening force is kept low with the flange surface facing the flange surface. Familiarity can be obtained and sealing performance can be maintained.
- the outer ring 12 is likely to be deformed in a portion where the pair of corner portions 14a and 14b of the inner ring 14 do not hit.
- the inner ring 14 is easily deformed because the inner ring 14 expands in the radial direction (lateral direction of the cross-sectional view) of the gasket 10 together with compression, and there is a reaction force in the vertical direction (compression direction) during deformation.
- the gasket 10 can be greatly deformed with a low load. Therefore, when the bolt tightening is performed manually, the bolt can be easily turned at the time of tightening, and if the bolt reaches the deadline, the bolt cannot be turned, so that the bolt tightening management is easy.
- the metal gasket according to the present invention even in the case of an O-ring shaped metal gasket, it is possible to ensure sealing performance with a low tightening force as a whole, and for bolt groove cutting. If this happens, the bolts will not turn immediately, and bolt tightening management by manual operation can be easily performed.
- the outer ring 12 may be an alloy instead of a single metal.
- a soft layer may be provided on the outer surface of the outer ring 12 constituting the sealing surface by coating or plating with resin or rubber.
- the material can be appropriately selected according to the conditions.
- the inner ring 14 is formed in the cross-sectional square shape, if this inner ring 14 is a polygonal body, it will not be limited to a square body, For example, a cross-sectional hexagonal body may be sufficient. . In short, any shape that presses the symmetrical positions on both sides substantially equally across the central opening of the outer ring 12 may be used.
- Such metal gaskets of the present invention can be widely used under severe conditions such as high vacuum, vacuum, low temperature, such as ultra vacuum flange, vacuum equipment, vapor deposition equipment, sputtering equipment, CVD equipment, various vacuum pumps. It is.
- the outer surface top portions of the pair of corner portions 14 a and 14 b are in close contact with the arc shape, in particular, the inner peripheral surface of the outer ring 12. It is preferable that it is formed with a large diameter. Thus, if the inner ring 14 is formed in the same diameter as the inner circumference of the outer ring 14, the inner ring 14 is in close sliding contact with each other, so that the outer ring 12 can be prevented from being deformed by the inner ring 14. .
- the inner ring 14 may be formed when the inner ring 14 is smaller than the outer ring 12 by performing a dimensional design in which the pair of corner portions 14a and 14b of the inner ring 14 are in close contact with the inner peripheral surface of the outer ring 12. It is possible to suppress the shift of 14 or the inclination of the slant.
- the opening 12c of the outer ring 12 is disposed on the outer peripheral side of the flange surface, but the outer ring 12 is formed so that the opening 12c is disposed on the inner peripheral side of the flange surface. May be.
- the pressure enters the outer ring 12 and pushes the outer ring 12 outward, so that the self-tightening function is exhibited.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
Description
これに対し、金属製でOリング形状のガスケットの場合は、変形させるために元来大きな力が必要であるため、ボルトの溝締切り状態になった瞬間の変化が分かり難い。そのため、手作業でのボルト締め付けの管理が行い難いという問題があった。
例えば、メタルガスケットのシール面に軟質な層(金属メッキ、ゴムコーティングなど)を設けたり、あるいはメタルガスケットのシール面に応力集中を生じさせる形状を採用したりすることが行われている。すなわち、特許文献1では、シール面に突出部を、特許文献2では、シール面に凹溝を設けて、応力集中が生じる形状としている。
また特に、特許文献1,2のように、シール面を応力集中が生じる形状とすると、その形状により相手側のフランジ面に傷が残り易く、結果として、フランジの再使用に問題が生じる場合があった。また、応力集中部が凸形状となるため、傷がつき易く、取扱いの際に特に注意が必要になるなどの問題があった。
周方向の開口により断面略C字状に形成された外環と、この外環の内側に嵌合状態で配置される内環と、から構成されるメタルガスケットであって、
前記内環が断面多角形体から構成されているともに、この内環における互いに対向する一対の角部が、前記外環における前記開口を挟んで両側の内周面にそれぞれ配置されていることを特徴としている。
このような構成であれば、簡単な構成の内環によりシール性能を高くすることができる。
このような構成であれば、内環の外環に対する密着性が良好であるので、シール性能を良好に維持することができるともに、内環の周方向への移動を防止することもできる。
このように内環が外環より硬質であれば、高硬度の内環が低硬度の内環を外側に押圧するとともに、低硬度の外環による相手部材に対するなじみ性が良好であるため、シール性も良好である。
図1は、本発明の一実施例によるメタルガスケットを示した半断面図である。
図1に示したように、メタルガスケット10は、断面略C字状の外環12と、断面略四角形状の中空の内環14とから構成されている。
例えば、外環12は、いわゆる軟質金属と称されるアルミニウム、内環14は、アルミニウムより硬質の金属、例えばステンレスなどから形成されていることが好ましい。
本発明のメタルガスケット10では、図3に示したように、シールすべき部材20、21のフランジ面22に、ガスケット10を介在させて、ボルト24などによって所定の締め付け力を付与すると、先ず、外環12の外周面が圧縮される。このとき、外環12は、内環14の一対の角部14a、14bが当たる部分は変形し難いが、他の部分では、適宜な圧縮力を受けて、徐々にフランジ面22になじむようになる。これにより、シール性が確保される。また、外環14が軟質金属から形成され、この外環14の内周面が一対の角部14a、14bで圧接される構造であるため、全体の締め付け力を低く抑えた状態でシール性能を維持することができる。
一方、内環14では、その内環14が圧縮と共にガスケット10の径方向(断面図の横方向)に広がっていくため、変形しやすく、また変形時には上下方向(圧縮方向)への反力が保たれるので、ガスケット10を低い荷重で大きく変形させることができる。よって、ボルト締めを手動で行った場合に、締め付け時には、ボルトを簡単に回すことができ、締め切りまで到達すれば、ボルトが回らなくなるのでボルト締め管理が容易である。
例えば、外環12は、単一の金属ではなく合金であっても良い。また、シール面を構成する外環12の外側表面に、樹脂やゴムなどによるコーティングあるいはメッキなどにより、軟質層を設けても良い。ここに、軟質層を別途設ける場合、材質は条件に合わせて適宜選択することができる。
12 外環
12c 開口
14 内環
14a、14b 角部
Claims (5)
- 周方向の開口により断面略C字状に形成された外環と、この外環の内側に嵌合状態で配置される内環と、から構成されるメタルガスケットであって、
前記内環が断面多角形体から構成されているともに、この内環における互いに対向する一対の角部が、前記外環における前記開口を挟んで両側の内周面にそれぞれ配置されていることを特徴とするメタルガスケット。 - 前記内環は断面四角形体であることを特徴とする請求項1に記載のメタルガスケット。
- 前記内環前記多角形体の頂部は円弧状に形成されていることを特徴とする請求項1または2に記載のメタルガスケット。
- 前記内環を構成する金属が、前記外環を構成する金属より硬質の金属から形成されていることを特徴とする請求項1~3のいずれかに記載のメタルガスケット。
- 前記外環の少なくとも外周側表面に、軟質層を設けたことを特徴とする請求項1または4に記載のメタルガスケット。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09750472.4A EP2287497B1 (en) | 2008-05-20 | 2009-05-07 | Metal gasket |
| CN200980118443.8A CN102037260B (zh) | 2008-05-20 | 2009-05-07 | 金属垫片 |
| US12/993,628 US8485534B2 (en) | 2008-05-20 | 2009-05-07 | Metal gasket |
| KR1020107027671A KR101441731B1 (ko) | 2008-05-20 | 2009-05-07 | 메탈 개스킷 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008131685A JP5204550B2 (ja) | 2008-05-20 | 2008-05-20 | メタルガスケット |
| JP2008-131685 | 2008-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009142110A1 true WO2009142110A1 (ja) | 2009-11-26 |
Family
ID=41340042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2009/058607 Ceased WO2009142110A1 (ja) | 2008-05-20 | 2009-05-07 | メタルガスケット |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8485534B2 (ja) |
| EP (1) | EP2287497B1 (ja) |
| JP (1) | JP5204550B2 (ja) |
| KR (1) | KR101441731B1 (ja) |
| CN (1) | CN102037260B (ja) |
| WO (1) | WO2009142110A1 (ja) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5638401B2 (ja) | 2011-01-24 | 2014-12-10 | 国立大学法人東北大学 | メタルガスケット |
| US9022348B2 (en) | 2011-09-01 | 2015-05-05 | Jianchao Shu | Triple offset butterfly valve and rotary for severe services |
| JP5951307B2 (ja) * | 2012-03-23 | 2016-07-13 | 日本バルカー工業株式会社 | メタルガスケット |
| US9581245B2 (en) * | 2012-04-02 | 2017-02-28 | Hermes Microvision, Inc. | Metal seal for ultra high vacuum system |
| JP5102908B1 (ja) * | 2012-04-12 | 2012-12-19 | ニチアス株式会社 | 金属ガスケット |
| CN103016867A (zh) * | 2012-12-26 | 2013-04-03 | 宁波易天地信远密封技术有限公司 | 一种组合垫片 |
| US20150115547A1 (en) * | 2013-10-24 | 2015-04-30 | Aktiebolaget Skf | Seal with Tabs for Retaining Energizing Member |
| JP6309284B2 (ja) * | 2014-01-27 | 2018-04-11 | 三菱電線工業株式会社 | 金属シール |
| WO2015161029A1 (en) * | 2014-04-17 | 2015-10-22 | Vistadeltek, Llc | Ultra-seal gasket for joining high purity fluid pathways |
| US20160091092A1 (en) * | 2014-09-25 | 2016-03-31 | Atlas Bimetal Labs, Inc. | Deformable all metal gaskets for ultra high purity sealing |
| US10330317B2 (en) * | 2016-10-18 | 2019-06-25 | Doris King Chow | Apparatus for extinguishing a wick flame of a candle disposed in a candle container and related methods |
| CN108253139A (zh) * | 2017-12-20 | 2018-07-06 | 北京控制工程研究所 | 一种高可靠平面密封组件结构 |
| KR102693594B1 (ko) * | 2018-10-10 | 2024-08-08 | 주식회사 발카 | 메탈 개스킷 |
| CN115917190A (zh) * | 2020-06-03 | 2023-04-04 | 美国圣戈班性能塑料公司 | 动态金属密封件 |
| US11906087B2 (en) * | 2020-09-18 | 2024-02-20 | Applied Materials, Inc. | Flanged joint and method of fluidly connecting two components |
| CN112728084B (zh) * | 2020-12-24 | 2023-04-14 | 中国航发长江动力有限公司 | 一种金属密封环加工方法及金属密封环 |
| GB2627964B (en) * | 2023-03-09 | 2025-06-25 | Tokamak Energy Ltd | Sealing ring and method of forming a metal-to-metal seal |
| CN116293121B (zh) * | 2023-05-22 | 2023-07-21 | 四川经准特种设备检验有限公司 | 一种压力气体管道法兰接头 |
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| JPH02113171A (ja) | 1988-09-08 | 1990-04-25 | Commiss Energ Atom | 金属ガスケット |
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| US1789595A (en) * | 1929-11-01 | 1931-01-20 | Victor Mfg & Gasket Co | Spark-plug gasket |
| DE1248397B (de) * | 1966-06-15 | 1967-08-24 | Goetzewerke | Flanschdichtung |
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2008
- 2008-05-20 JP JP2008131685A patent/JP5204550B2/ja not_active Expired - Fee Related
-
2009
- 2009-05-07 EP EP09750472.4A patent/EP2287497B1/en not_active Not-in-force
- 2009-05-07 KR KR1020107027671A patent/KR101441731B1/ko not_active Expired - Fee Related
- 2009-05-07 WO PCT/JP2009/058607 patent/WO2009142110A1/ja not_active Ceased
- 2009-05-07 US US12/993,628 patent/US8485534B2/en not_active Expired - Fee Related
- 2009-05-07 CN CN200980118443.8A patent/CN102037260B/zh not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01115061U (ja) * | 1988-01-28 | 1989-08-02 | ||
| JPH0226367A (ja) * | 1988-07-12 | 1990-01-29 | Usui Internatl Ind Co Ltd | 圧力変形防止リング付き金属シール部材 |
| JPH02113171A (ja) | 1988-09-08 | 1990-04-25 | Commiss Energ Atom | 金属ガスケット |
| JPH09264427A (ja) | 1996-03-28 | 1997-10-07 | Nippon Valqua Ind Ltd | メタルガスケット |
| JPH11210885A (ja) * | 1998-01-20 | 1999-08-03 | Marusan:Kk | 積層構造ガスケット |
| JP2000257717A (ja) * | 1999-03-05 | 2000-09-19 | Japan Atom Energy Res Inst | 金属中空oリング |
Non-Patent Citations (1)
| Title |
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| See also references of EP2287497A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009281424A (ja) | 2009-12-03 |
| EP2287497B1 (en) | 2015-11-04 |
| KR20110014190A (ko) | 2011-02-10 |
| CN102037260A (zh) | 2011-04-27 |
| CN102037260B (zh) | 2013-09-11 |
| US20110084456A1 (en) | 2011-04-14 |
| KR101441731B1 (ko) | 2014-09-17 |
| EP2287497A1 (en) | 2011-02-23 |
| EP2287497A4 (en) | 2012-01-11 |
| JP5204550B2 (ja) | 2013-06-05 |
| US8485534B2 (en) | 2013-07-16 |
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