WO2010040836A1 - Joint composite deformable pour portees a fort defaut de planeite - Google Patents
Joint composite deformable pour portees a fort defaut de planeite Download PDFInfo
- Publication number
- WO2010040836A1 WO2010040836A1 PCT/EP2009/063199 EP2009063199W WO2010040836A1 WO 2010040836 A1 WO2010040836 A1 WO 2010040836A1 EP 2009063199 W EP2009063199 W EP 2009063199W WO 2010040836 A1 WO2010040836 A1 WO 2010040836A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bag
- envelope
- seal
- joint according
- bearing surfaces
- Prior art date
Links
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
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/03—Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
-
- 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
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
-
- 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
-
- 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
- F16L23/165—Flanged joints characterised by the sealing means comprising a viscous mass, e.g. hardenable
Definitions
- the subject of this invention is a deformable composite seal for litters with a high level of flatness.
- Elastomer seals may be satisfactory in some cases, but are destroyed at high temperature or in the presence of certain fluids to be sealed. Their use is therefore not universal. Some, especially hollow or inflatable, are anyway too flexible to transmit enough effort on litters.
- Another type of known seal consists of a PTFE (polytetrafluoroethylene) casing containing a corrugated spring ensuring contact of the casing on the span or the staves.
- PTFE polytetrafluoroethylene
- a corrugated spring ensuring contact of the casing on the span or the staves.
- An example is given in DE-U-89 14536.
- PTFE resists most fluids and therefore resolves elastomeric seal failure with respect to chemical compatibility with process fluids.
- a disadvantage is that the corrugated spring is unable to apply uniform pressure on the deformed bearing surfaces.
- US-A-4 9961 891 discloses a flat gasket of cellular PTFE material, thus having high compressibility. Since the structure is porous, it can not be admitted with certain hazardous fluids, and the seal is difficult to clean.
- EP-00200228 discloses a joint composed of a high-viscosity mass, which may optionally be in the form of powder or granules before a physical transformation, when the material is thermoplastic, in order to better adjust to the end faces of the joint ; but no transmission of forces is envisaged for this joint which is not designed to serve under pressure.
- Document FR-A-2 190 317 which seems to be the closest design of the invention relates to a sound insulation seal for highly irregular surfaces such as the periphery of a human ear.
- the contact of the seal with these surfaces is via an air bag shaped bead closed on itself and filled with balls circulating by sliding on each other.
- the bag can deform and marry the shape of the surface in contact.
- Such a seal is however not able to be applied with a uniform pressure since its capacity of transmission of effort between the ranges remains too limited.
- the present invention represents an improved joint and satisfying at the same time the need to be deformable enough to adapt to large flatness defects but rigid to apply a sufficient contact pressure.
- a seal comprising a deformable envelope and a core contained in the envelope, the core being constituted by a granular fluid in a flexible bag, characterized in that the bag is porous in the air and partially filled by the granular fluid.
- This "granular fluid" is two-phase, it consists of ambient air likely to pass through the wall of the bag, or more generally gas, and able to slide relative to each other.
- the bag is mobile in the envelope.
- the partial filling of the bag by the granular fluid means that a volume of air remains inside the bag in addition to the interstices between the stacked grains.
- the bag is porous, part of this volume of air can disappear if the compression of the seal is large enough to sufficiently reduce its internal volume.
- the constitutive grains of the fluid have a high mobility in the bag as a volume of air remains there: they therefore slide easily to adapt to significant flatness defects.
- the pressure transmission is effected by the contact of the balls, which resist high contact pressures due to their rigidity and the stability of their assembly, but a sliding ability remains, which adjusts to the end of the differences of excessive pressure from one point to the other of the joint.
- the mobility of the bag in the envelope promotes the good distribution of the balls and their flow between the staves of the seal.
- a certain elasticity of the bag can be tolerated or even preferred to allow it to expand in response to efforts and further promote the sliding of the grains.
- greater elasticity is not recommended since the seal would become too flexible. This is why an essentially inextensible bag can also be proposed. If it is elastic and therefore extensible, it may be reinforced with son or other portions of substantially inextensible material extending in only one direction of the bag, to allow extension only in the other direction.
- Rigid elements such as washers, can also be placed near the bag, to serve as local reinforcements to the bag, or limit its movements and deformations to make it locally completely rigid.
- the envelope is made of PTFE, on which the bag slides easily.
- the envelope is made of restructured PTFE formed of a rolled strip on itself to enclose the bag.
- FIGS. 1, 2 and 3 represent respectively: FIG. 1, a cross-section of the seal in the free state
- FIG. 2 a cross-section of the seal in the compressed state
- FIG. 3 the seal in a view from above.
- Two spans 1 and 2 are opposite and parallel according to Figure 1, and the seal 3 is interposed between them. It comprises a casing 4 made of restructured PTFE with C-shaped section, composed of two lips 5 and 6 respectively bearing on the bearing surfaces 1 and 2 and a connecting portion 7 curved joining the lips 5 and 6.
- the envelope 4 contains a core 8 composed of a bag 9 of approximately circular section in a free state lined with a granular fluid 10; a volume of air 11, however, remains in the bag 9 until it is compressed.
- the bag 9 is deformable, porous in the air, and little or not extensible. To retain the grains 10, it is completely closed and the pores are smaller than the grains 10. It may be of a woven or knitted material.
- a compression is applied to the joint 3 by the bringing together of the litters 1 and 2, the state of FIG. 2 is obtained.
- the casing 4 is deformed, and the core 8 is compressed between the lips 5 and 6.
- the volume of air 11 has disappeared, evacuated by the pores of the bag 9, and the filling of the grains 10 extends from 1 a range 1 to the other 2 by the only intermediate lips 5 and 6 and the bag 9.
- the state of Figure 2 is respected for all sections of the assembly, despite spacings different from one place to another between lips 1 and 2.
- the seal of the invention may be a conventional shaped circular seal, as shown in Figure 3, without other forms being excluded.
- An example of application of this seal is an enamelled chemical reactor consisting of a vessel surmounted by a lid.
- the seal 3 is arranged between them to establish the seal.
- the temperature conditions are between -60 0 C and +250 0 C.
- the internal pressure in the reactor can be between 0 bar absolute (vacuum) and 7 bar absolute.
- the envelope consists of a restructured PTFE material produced by Garlock and Gylon Style 3 504, and the bag 9 is made of polyacrylonitrile fabric.
- the grains are small steel balls. Lubricant can be added to the gas-solid two-phase fluid.
- each of the washers 15 and 16 can help to compensate for a possible creep of the corresponding lip 5 or 6; other elastic elements could be interposed between the envelope 4 and the core 8 with the same effect.
- restructured PTFE has a non-cellular structure, it also has improved creep resistance.
- the washers 15 and 16 may also be made of harder material to distribute the grain thrust more regularly.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gasket Seals (AREA)
- Sealing Devices (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011530499A JP2012505355A (ja) | 2008-10-10 | 2009-10-09 | 重大な平坦性の欠如を伴う支持面のための変形可能な合成シール |
BRPI0920310A BRPI0920310A2 (pt) | 2008-10-10 | 2009-10-09 | junta compósita deformável para abaulamentos com acentuado defeito de planeidade |
CA2738979A CA2738979C (fr) | 2008-10-10 | 2009-10-09 | Joint composite deformable pour portees a fort defaut de planeite |
US13/122,081 US20110175299A1 (en) | 2008-10-10 | 2009-10-09 | Deformable composite seal for bearing surfaces with a great lack of flatness |
EP09783908.8A EP2331853B1 (fr) | 2008-10-10 | 2009-10-09 | Joint composite deformable pour portees a fort defaut de planeite |
ES09783908.8T ES2524473T3 (es) | 2008-10-10 | 2009-10-09 | Junta de material compuesto deformable para superficies de apoyo con gran falta de planicidad |
CN2009801483251A CN102232156A (zh) | 2008-10-10 | 2009-10-09 | 用于非常缺乏平坦度的支承面的可变形合成密封件 |
AU2009301116A AU2009301116A1 (en) | 2008-10-10 | 2009-10-09 | Deformable composite seal for bearing surfaces with a great lack of flatness |
ZA2011/02230A ZA201102230B (en) | 2008-10-10 | 2011-03-25 | Deformable composite seal for bearing surfaces with a great lack of flatness |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0856879 | 2008-10-10 | ||
FR0856879A FR2937107B1 (fr) | 2008-10-10 | 2008-10-10 | Joint composite deformable pour portees a fort defaut de planeite. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010040836A1 true WO2010040836A1 (fr) | 2010-04-15 |
Family
ID=40568218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/063199 WO2010040836A1 (fr) | 2008-10-10 | 2009-10-09 | Joint composite deformable pour portees a fort defaut de planeite |
Country Status (12)
Country | Link |
---|---|
US (1) | US20110175299A1 (fr) |
EP (1) | EP2331853B1 (fr) |
JP (1) | JP2012505355A (fr) |
KR (1) | KR20110079808A (fr) |
CN (1) | CN102232156A (fr) |
AU (1) | AU2009301116A1 (fr) |
BR (1) | BRPI0920310A2 (fr) |
CA (1) | CA2738979C (fr) |
ES (1) | ES2524473T3 (fr) |
FR (1) | FR2937107B1 (fr) |
WO (1) | WO2010040836A1 (fr) |
ZA (1) | ZA201102230B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105465517A (zh) * | 2015-12-30 | 2016-04-06 | 中国核电工程有限公司 | 一种充气密封装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104863953A (zh) * | 2015-05-12 | 2015-08-26 | 张斐斐 | 一种高效浅层气浮机控制轴透气垫片 |
CN107013773A (zh) * | 2017-05-10 | 2017-08-04 | 宁波天生密封件有限公司 | 密封连接装置 |
CN107143708A (zh) * | 2017-06-01 | 2017-09-08 | 宁波天生密封件有限公司 | 密封连接装置 |
CN107023724B (zh) * | 2017-04-19 | 2023-12-12 | 宁波天生密封件有限公司 | 密封连接装置 |
CN111642219B (zh) * | 2020-06-04 | 2021-08-24 | 温州科技职业学院 | 一种山药收获机 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2190317A5 (fr) * | 1972-06-20 | 1974-01-25 | Lennartsfors Mekaniska Verksta | |
EP0079448A1 (fr) * | 1981-10-27 | 1983-05-25 | Pfaudler Werke GmbH | Un joint d'étanchéité garni et procédé pour la fabrication d'un joint d'étanchéité garni ou d'une doublure d'étanchéité |
JPS58163864A (ja) * | 1982-03-24 | 1983-09-28 | Suriibondo:Kk | 液状ガスケツト |
EP0100228A2 (fr) * | 1982-07-26 | 1984-02-08 | N.V. Raychem S.A. | Méthode et dispositif d'étanchéité |
US4468043A (en) * | 1982-06-11 | 1984-08-28 | Brazel Patrick J | High temperature seal |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2580546A (en) * | 1947-07-02 | 1952-01-01 | Us Gasket Company | Jacketed gasket |
US2989598A (en) * | 1960-02-24 | 1961-06-20 | Martin L Touger | Hard shell liquid seal earmuff with isolated inner close coupling ear shell |
US3230290A (en) * | 1961-02-23 | 1966-01-18 | Shell Oil Co | Composite gasket and method of applying same |
US3455336A (en) * | 1965-11-03 | 1969-07-15 | Raychem Corp | Heat recoverable article and process |
US3869132A (en) * | 1973-07-18 | 1975-03-04 | Pressure Science Inc | Fire resistant sealing ring combination |
US4218067A (en) * | 1979-02-02 | 1980-08-19 | Pressure Science Incorporated | Multi-ply sealing rings |
GB8333722D0 (en) * | 1983-12-19 | 1984-01-25 | Raychem Gmbh | Expansible seal |
US4888070A (en) * | 1987-12-01 | 1989-12-19 | Raychem Corporation | Environmental sealing of a substrate |
US4961891A (en) * | 1988-10-04 | 1990-10-09 | Garlock, Inc. | Method of making high compressibility gasket material |
US5047997A (en) * | 1989-08-21 | 1991-09-10 | Argotec, Inc. | Sonar projector with liquid mass loading for operation at lower frequency |
US5558347A (en) * | 1990-12-31 | 1996-09-24 | Specialist Sealing Limited | Seal |
DE19944611A1 (de) * | 1999-09-17 | 2001-03-22 | Illbruck Gmbh | Dichtstreifen zur Abdichtung einer Fuge |
US6422575B1 (en) * | 2000-03-14 | 2002-07-23 | L&L Products, Inc. | Expandable pre-formed plug |
US7493739B2 (en) * | 2000-10-20 | 2009-02-24 | Truseal Technologies, Inc. | Continuous flexible spacer assembly having sealant support member |
US20050173870A1 (en) * | 2004-02-05 | 2005-08-11 | Seagate Technology Llc | Heat-assisted hermetic spring seal |
JP5084617B2 (ja) * | 2007-06-15 | 2012-11-28 | 国立大学法人東北大学 | 低締付金属ガスケット |
US8251373B2 (en) * | 2009-07-17 | 2012-08-28 | GM Global Technology Operations LLC | Seal performance for hydrogen storage and supply systems |
-
2008
- 2008-10-10 FR FR0856879A patent/FR2937107B1/fr not_active Expired - Fee Related
-
2009
- 2009-10-09 AU AU2009301116A patent/AU2009301116A1/en not_active Abandoned
- 2009-10-09 WO PCT/EP2009/063199 patent/WO2010040836A1/fr active Application Filing
- 2009-10-09 BR BRPI0920310A patent/BRPI0920310A2/pt not_active Application Discontinuation
- 2009-10-09 CA CA2738979A patent/CA2738979C/fr active Active
- 2009-10-09 ES ES09783908.8T patent/ES2524473T3/es active Active
- 2009-10-09 EP EP09783908.8A patent/EP2331853B1/fr not_active Not-in-force
- 2009-10-09 US US13/122,081 patent/US20110175299A1/en not_active Abandoned
- 2009-10-09 KR KR1020117008075A patent/KR20110079808A/ko not_active Application Discontinuation
- 2009-10-09 CN CN2009801483251A patent/CN102232156A/zh active Pending
- 2009-10-09 JP JP2011530499A patent/JP2012505355A/ja active Pending
-
2011
- 2011-03-25 ZA ZA2011/02230A patent/ZA201102230B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2190317A5 (fr) * | 1972-06-20 | 1974-01-25 | Lennartsfors Mekaniska Verksta | |
EP0079448A1 (fr) * | 1981-10-27 | 1983-05-25 | Pfaudler Werke GmbH | Un joint d'étanchéité garni et procédé pour la fabrication d'un joint d'étanchéité garni ou d'une doublure d'étanchéité |
JPS58163864A (ja) * | 1982-03-24 | 1983-09-28 | Suriibondo:Kk | 液状ガスケツト |
US4468043A (en) * | 1982-06-11 | 1984-08-28 | Brazel Patrick J | High temperature seal |
EP0100228A2 (fr) * | 1982-07-26 | 1984-02-08 | N.V. Raychem S.A. | Méthode et dispositif d'étanchéité |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105465517A (zh) * | 2015-12-30 | 2016-04-06 | 中国核电工程有限公司 | 一种充气密封装置 |
Also Published As
Publication number | Publication date |
---|---|
FR2937107A1 (fr) | 2010-04-16 |
EP2331853B1 (fr) | 2014-08-20 |
CA2738979A1 (fr) | 2010-04-15 |
BRPI0920310A2 (pt) | 2016-02-23 |
CN102232156A (zh) | 2011-11-02 |
CA2738979C (fr) | 2016-11-08 |
US20110175299A1 (en) | 2011-07-21 |
JP2012505355A (ja) | 2012-03-01 |
FR2937107B1 (fr) | 2013-02-08 |
AU2009301116A1 (en) | 2010-04-15 |
EP2331853A1 (fr) | 2011-06-15 |
ZA201102230B (en) | 2011-11-30 |
ES2524473T3 (es) | 2014-12-09 |
KR20110079808A (ko) | 2011-07-08 |
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