• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to the field of line shutters (1) for sealing tightness, and conversely, a fluid flow in a pipe between an upstream pipe arranged upstream of said in-line shutter (1) in a fluid flow direction and a downstream pipe arranged downstream of said in-line shutter (1) in said fluid flow direction, said in-line shutter (1) comprising a shutter plate (2) movable in a plane, a body (5) comprising a half upstream body (6) and a downstream half-body (7), clamping means / spacing (10) for clamping, and conversely, to separate said upstream and downstream half-bodies (6 and 7) relative to said shutter plate (2). According to the invention, said closure plate (2) is formed by a first assembly overmolded between a metal central support and a first injected layer of a chemically inert thermoplastic polymer material.
    公开号:FR3080665A1
    申请号:FR1800378
    申请日:2018-04-27
    公开日:2019-11-01
    发明作者:Yann FUMANAL
    申请人:ONIS；
    IPC主号:
    专利说明:

    In-line shutter with movable shutter plate in a plane and associated manufacturing method
    The present invention relates to the field of installations for the production, treatment or transport of a fluid in at least one pipe. Such a fluid can in particular be a liquid, a product in pasty form or a product in the powder state.
    More specifically, the invention relates to the field of in-line shutters comprising a shutter plate movable in a plane P and being intended to be mounted on such a pipe, for example for performing a maintenance operation on a member arranged downstream of this shutter online.
    In a known manner, such in-line shutters have in particular been described by the Applicant in documents FR 3,041,407 and FR 3,051,878. Such in-line shutters thus generally comprise a monolithic shutter plate made of metal capable of producing a shutter tight or fluid circulation in the pipeline. Such a metal closure plate can then be directly in contact with the fluid present or circulating in the pipeline.
    However, for certain fluids such as for example formed by a chemical reagent, by a food product or even by a pharmaceutical product, such a monolithic metal sealing plate can be attacked by the fluid and material transfers can then occur. operate. However, such transfers should be avoided.
    Therefore, non-monolithic obturator plates were designed having a metal support and two added rings machined from a chemically inert material, such as in particular Polytetrafluoroethylene (PTFE).
    Each of these two rings is however forcefully inserted inside a metal ring attached to the metal support and secured by a welding process. Such assemblies by welding between the two metal rings and the metal support then generate significant deformations at the level of the metal support. Subsequent surfacing operations are then necessary to guarantee the flatness of each face of the closure plate.
    In addition, such a type of assembly does not guarantee optimal adhesion between the rings machined from a chemically inert material and the metal support. Adhesion and detachment problems are common and therefore generate fluid leaks between the machined rings and the metal support. As a result, there may also occur material transfers between the fluid and the metal support.
    The object of the present invention is therefore to propose an on-line shutter making it possible to overcome the limitations mentioned above. Indeed, the in-line shutter according to the invention makes it possible to avoid any chemical attack and any transfer of material between the fluid present or flowing through the shutter and at least the shutter plate.
    Another object of the invention is to limit the number of operations necessary for the manufacture of closure plates by limiting the number of machining resumptions after assembly between the metal support and a protective layer of chemically inert material.
    The invention therefore relates to an in-line shutter making it possible to form a sealed shutter, and conversely, a fluid circulation in a pipe between an upstream pipe arranged upstream of the in-line shutter in a direction of fluid flow and a downstream pipe arranged downstream of the in-line shutter in the direction of fluid flow, the in-line shutter comprising:
    A movable closure plate in a plane P between a closure position stopping the fluid circulation and a circulation position allowing the fluid circulation, the closure plate comprising a solid portion for stopping the fluid circulation and an openwork portion for allow fluid circulation, • a body comprising an upstream half-body and a downstream half-body arranged respectively upstream and downstream of the closure plate, the upstream and downstream half-body being movable in translation relative to one another to the other perpendicular to the plane P, the upstream and downstream half-bodies respectively having an upstream orifice and a downstream orifice allowing fluid circulation between the upstream pipe and the downstream pipe, • clamping / spacing means making it possible to clamp , and conversely, to separate the upstream and downstream half-bodies relative to the closure plate to allow a relative tightening / spacing of s upstream and downstream half body relative to the cover plate.
    According to the invention, such an in-line shutter is remarkable in that the shutter plate is formed by a first assembly molded between a central metal support and a first layer injected in a chemically inert thermoplastic polymer material.
    In other words, the first injected layer forms a monolithic assembly which is directly secured to the central metal support. Indeed, such an assembly by overmolding between the first injected layer and the central metal support is advantageous in that it allows to guarantee an optimal adhesion between them.
    In addition, the chemically inert thermoplastic polymer material forming the first injected layer may be a fluoropolymer having a melting point of less than 320 ° C and preferably less than 310 ° C. Thus, such a thermoplastic polymer material can be easily melted and used with conventional injection and molding techniques. For example, this chemically inert thermoplastic polymer material can be chosen from the group comprising in particular Perfluoroalkoxy (PFA), modified Perfluoroalkoxy (MFA) and Ethylene Propylene Fluoride (FEP).
    Advantageously, the first injected layer may have on the one hand a first planar shape extending at the level of a first planar face of the closure plate arranged facing the upstream half-body and on the other hand a second planar shape extending at a second flat face of the closure plate arranged opposite the downstream half-body.
    In other words, the first injected layer extends on either side of the metal central support and then has a first planar shape and a second planar shape arranged parallel to the plane P.
    In practice, the first injected layer may have a hollow cylindrical zone extending between the first planar shape and the second planar shape at the level of the perforated portion of the closure plate.
    Thus, such a hollow cylindrical zone made of a chemically inert material has a bore inside which the fluid can circulate freely without any risk of detachment and / or transfer of material between the central metallic support and the fluid passing through the hollow cylindrical zone.
    According to an advantageous embodiment of the invention, the central metal support may have a plurality of holes respectively oriented perpendicularly to the plane P, the first injected layer having a plurality of junctions extending between the first planar shape and the second planar shape inside the plurality of holes in the central metal support.
    In other words, the plurality of junctions is formed by several cylindrical studs connecting together the first and the second planar shape of the first injected layer. Such holes in the central metal support can advantageously be regularly distributed around the periphery of the solid portion and of the perforated portion of the closure plate.
    In addition, such a plurality of regularly arranged junctions thus makes it possible to participate and / or improve the relative adhesion between the central metal support and the first injected layer.
    Advantageously, the first injected layer may have four circular grooves, the first and second planar shapes of the first injected layer respectively having two coplanar circular grooves, the two coplanar circular grooves of each planar shape being respectively arranged coaxially with on the one hand the portion full and on the other hand the perforated portion of the closure plate, the closure plate comprising four seals housed in the four circular grooves of the first injected layer.
    In other words, the first injected layer may have circular grooves to guarantee the seal between the closure plate and the body. In this way, the seal is guaranteed with the environment outside the pipe once the upstream and downstream half-bodies are held tight against the closure plate. Such seals housed in the four circular grooves can for example be formed by elastically deformable O-rings and having an outer protective layer of a chemically inert material.
    Such circular grooves can for example be formed directly at the time of the molding operation between the central metal support and the first injected layer. According to another embodiment, the circular grooves can also be produced after the overmolding operation during an additional machining step.
    In practice, the upstream half-body can be formed by a second molded assembly between a hollow upstream metal support and a second layer injected in a chemically inert thermoplastic polymer material and the downstream half-body can be formed by a third molded assembly between a downstream hollow metal support and a third layer injected in a chemically inert thermoplastic polymer material.
    In other words, the second and third injected layers respectively form two monolithic assemblies directly secured to the upstream / downstream hollow metal supports. In fact, such assemblies by overmolding between the second and third injected layers and the upstream / downstream hollow metal supports are advantageous in that they make it possible to guarantee optimum adhesion between them.
    In addition, the chemically inert thermoplastic polymer materials forming the second and third injected layers can advantageously be identical to that forming the first injected layer. Thus, the second and third layers injected can consist of a fluoropolymer having a melting point of less than 320 ° C and preferably less than 310 ° C. As before, such a thermoplastic polymer material can be easily melted and used with conventional injection and molding techniques. For example, this chemically inert thermoplastic polymer material can be chosen from the group comprising Perfluoroalkoxy (PFA), modified Perfluoroalkoxy (MFA) and Ethylene Fluorinated Propylene (FEP).
    According to another advantageous embodiment of the invention, the second and third injected layers may each have, respectively, on the one hand a tubular shape arranged at the upstream / downstream orifice of the upstream / downstream half-bodies and on the other share two end flanges arranged on either side of the tubular shape.
    In this case, the tubular shape of the second and third injected layers is held in place at the upstream / downstream orifice of the upstream / downstream half-bodies by virtue of the two end flanges extending in planes substantially parallel to the plane P of movement of the cover plate.
    Advantageously, the upstream hollow metal support and the downstream hollow metal support may respectively have circular machining operations making it possible to form retaining notches at the end flanges of each of the second and third injected layers.
    Indeed, such circular machining can be carried out undercut according to the overmolding process of the second and third injected layers. In this way, the retaining notches make it possible to ensure optimum adhesion between the second and third injected layers respectively and the upstream / downstream half-bodies.
    The present invention also relates to the method of manufacturing the aforementioned device.
    According to the invention, such a method comprises a first step of assembly by overmolding between the central metal support and the first layer injected in a chemically inert thermoplastic polymer material to form the closure plate.
    In other words, the first step of assembly by overmolding consists in injecting a chemically inert thermoplastic polymer material in the pasty or liquid state on the central metal support to form a non-removable monolithic assembly.
    Advantageously, the method may include a second step of assembly by overmolding between the upstream hollow metal support and the second layer injected in a chemically inert thermoplastic polymer material to form the upstream half-body and a third step of assembly by overmolding between the downstream hollow metal support and the third layer injected in a chemically inert thermoplastic polymer material to form the downstream half-body.
    As previously for the closure plate formed by overmolding, the second and third stages of assembly by overmolding consist in injecting a chemically inert thermoplastic polymer material in the pasty or liquid state on the hollow metal supports upstream and downstream to form two other non-removable monolithic assemblies.
    The invention and its advantages will appear in more detail in the context of the description which follows with examples given by way of illustration with reference to the appended figures which represent:
    FIG. 1, a perspective view of an in-line shutter according to the invention,
    FIG. 2, a sectional view of an in-line shutter according to the invention,
    FIG. 3, a top view of a closure plate, in accordance with the invention, and
    - Figure 4, a block diagram of the manufacturing process according to the invention.
    The elements present in several separate figures are assigned a single reference.
    As already mentioned, the invention relates to an in-line shutter intended to be connected to a pipe between an upstream pipe and a downstream pipe.
    As shown in FIG. 1, such an in-line shutter 1 thus comprises a shutter plate 2 movable, for example in translation in a plane P perpendicularly to a direction of circulation of the fluid inside the pipeline (not shown).
    The shutter 1 also comprises a body 5 formed by two half-bodies 6 and 7 arranged on either side of the shutter plate 2 as well as clamping / spacing means 10 making it possible to tighten, and vice versa, spread the upstream and downstream half-bodies 6 and 7 relative to the closure plate 2. Thus such clamping / spacing means 10 allow a relative tightening / spacing of the two half-bodies 6 and 7 relative to the plate shutter 2.
    When the clamping / spacing means 10 separate the upstream and downstream half-bodies 6 and 7 from one another in a direction perpendicular to the plane P, the closure plate 2 is then free to move between a position d obturation stopping the fluid circulation in the pipeline and a circulation position allowing the fluid circulation in the pipeline.
    On the other hand, when the clamping / spacing means 10 clamp the upstream and downstream half-bodies 6 and 7 against the closure plate 2, the latter no longer move freely in the plane P. The closure plate 2 is then held in position relative to the body 5 either in the closed position or in the circulation position.
    As shown in FIG. 2, such a closure plate 2 in fact comprises a solid portion 3 to stop the fluid circulation in the closure position, here shown, and an perforated portion 4 to allow the fluid circulation in the position traffic.
    According to the invention, such a closure plate 2 is formed by a first molded assembly between a central metal support 11 and a first injected layer 12 of a chemically inert thermoplastic polymer material such as for example Perfluoroalkoxy (PFA), Perfluoroalkoxy modified (MFA) or Fluorinated Ethylene Propylene (FEP).
    Furthermore, the central metal support 11 and the first injected layer 12 can extend substantially symmetrically on either side of the plane P. The first injected layer 12 has on the one hand a first planar shape 13 extending at the level a first planar face 14 of the closure plate 2 arranged opposite the upstream half-body 6 and on the other hand a second planar shape 15 extending at the level of a second planar face 16 of the plate obturation 2 arranged opposite the downstream half-body 7.
    The first and second planar shapes 13 and 15 of the first injected layer 12 are then arranged parallel to the plane P.
    In addition, such first and second planar shapes 13 and 15 of the first injected layer 12 are then connected together by at least one hollow cylindrical zone 17 at the level of the perforated portion 4 of the closure plate 2.
    In addition, such a first injected layer 12 has four circular grooves 20-23 respectively arranged in a coplanar fashion two by two at the level of the first planar shape 13 and of the second planar shape 15. Each of the four circular grooves 20-23 makes it possible to housing a seal 24 such as an O-ring made of an elastomeric material coated with a coating layer of a chemically inert material.
    Furthermore, the upstream half-body 6 can also be formed by a second molded assembly between a hollow upstream metal support 25 and a second injected layer 26 made of a chemically inert thermoplastic polymer material. The thermoplastic polymer material of this second injected layer 26 can advantageously be identical to that of the first injected layer 12.
    Likewise, the downstream half-body 7 can be formed by a third overmolded assembly between a downstream hollow metal support 27 and a third injected layer 28 made of a chemically inert thermoplastic polymer material identical to that of the first injected layer 12.
    Thus, the chemically inert thermoplastic polymer material forming the first injected layer 12, second injected layer 26 and third injected layer 28 can be a fluoropolymer having a melting point of less than 320 ° C and preferably less than 310 ° C. Thus, such a thermoplastic polymer material can be easily melted and used with conventional injection and molding techniques. For example, this chemically inert thermoplastic polymer material can be chosen from the group comprising Perfluoroalkoxy (PFA), modified Perfluoroalkoxy (MFA) and Ethylene Fluorinated Propylene (FEP).
    In addition, the second and third injected layers 26 and 28 each have a tubular shape 29, 30 respectively arranged at the upstream / downstream orifice 8 and 9 of the upstream / downstream half-bodies 6 and 7. These second and third layers 26 and 28 also each have two end flanges 31 and 32, 33 and 34 respectively arranged on either side of the tubular shape 29, 30.
    In addition, the upstream hollow metal support 25 and the downstream hollow metal support 27 respectively have circular machining operations 35 making it possible to form retaining notches 36 at the end flanges 31 and 32, 33 and of each of the second and third layers injected 26 and 28.
    As shown in Figure 3, the central metal support 11 has a plurality of holes 18 respectively oriented perpendicularly to the plane P and arranged at the periphery of the first planar shape 13 and the second planar shape 15. The first layer injected 12 then also has a plurality of junctions 19 connecting together the first planar form 13 and the second planar form 15. This plurality of junctions 19 is thus arranged inside the plurality of bores 18 of the central metal support 11.
    As shown in FIG. 4, the invention also relates to the method of manufacturing 40 of an in-line shutter 1.
    In fact, such a manufacturing process 40 comprises a first step of assembly by overmolding 41 between the central metal support 11 and the first injected layer 12 made of a chemically inert thermoplastic polymer material to form the closure plate 2.
    The manufacturing process 40 may also include a second assembly step by overmolding 42 between the upstream hollow metal support 25 and the second injected layer 26 made of a chemically inert thermoplastic polymer material to form the upstream half-body 6.
    Finally, the manufacturing process 40 may include a third step of assembly by overmolding 43 between the downstream hollow metal support 27 and the third injected layer 28 made of a chemically inert thermoplastic polymer material to form the downstream half-body 7.
    Naturally, the present invention is subject to numerous variations as to its implementation. Although several embodiments have been described, it is understood that it is not conceivable to identify exhaustively all of the possible modes. It is of course conceivable to replace a means described by an equivalent means without departing from the scope of the present invention.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. In-line shutter (1) making it possible to produce a sealed shutter, and conversely, a fluid circulation in a pipeline between an upstream pipe arranged upstream of said in-line shutter (1) in a direction of fluid flow and a downstream pipe arranged in downstream of said in-line shutter (1) in said direction of fluid flow, said in-line shutter (1) comprising:
    • a shutter plate (2) movable in a plane (P) between a shutter position stopping said fluid circulation and a circulation position allowing said fluid circulation, said shutter plate (2) comprising a solid portion (3 ) to stop said fluid circulation and an openwork portion (4) to allow said fluid circulation, • a body (5) comprising an upstream half-body (6) and a downstream half-body (7) respectively arranged upstream and downstream of said blanking plate (2), said upstream and downstream half-bodies (6 and 7) being movable in translation relative to each other perpendicularly to said plane (P), said upstream and downstream half-bodies ( 6 and 7) respectively having an upstream orifice (8) and a downstream orifice (9) allowing said fluid circulation between said upstream pipe and said downstream pipe, • clamping / spacing means (10) making it possible to clamp, and vice versa, d '' spread lesd its upstream and downstream half-bodies (6 and 7) relative to said closure plate (2) to allow a relative tightening / spacing of said upstream and downstream half-bodies (6 and 7) relative to said closure plate (2), characterized in that said closure plate (2) is formed by a first molded assembly between a central metallic support (11) and a first injected layer (12) made of a chemically inert thermoplastic polymer material.
    [2" id="c-fr-0002]
    2. A shutter according to claim 1, characterized in that said first injected layer (12) has on the one hand a first planar shape (13) extending at a first planar face (14) of said plate obturation (2) arranged opposite said upstream half-body (6) and on the other hand a second planar shape (15) extending at a second planar face (16) of said obturation plate (2) arranged opposite said downstream half-body (7).
    [3" id="c-fr-0003]
    3. A shutter according to claim 2, characterized in that said first injected layer (12) has a hollow cylindrical zone (17) extending between said first planar shape (13) and said second planar shape (15) at said level. perforated portion (4) of said closure plate (2).
    [4" id="c-fr-0004]
    4. A shutter according to any one of claims 2 to
    3, characterized in that said central metal support (11) has a plurality of holes (18) respectively oriented perpendicularly to said plane (P), said first injected layer (12) having a plurality of junctions (19) extending between said first planar form (13) and said second planar form (15) inside said plurality of holes (18) of said central metal support (11).
    [5" id="c-fr-0005]
    5. A shutter according to any one of claims 2 to
    4, characterized in that said first injected layer (12) has four circular grooves (20-23), said first and second planar shapes (13 and 15) of said first injected layer (12) respectively having two coplanar circular grooves (20 and 21, 22 and 23), said two coplanar circular grooves (20 and 21, 22 and 23) of each planar shape (13, 15) being respectively arranged coaxially with on the one hand said solid portion (3) and on the other share said perforated portion (4) of said closure plate (2), said closure plate (2) having four seals (24) housed in said four circular grooves (20-23) of said first injected layer (12).
    [6" id="c-fr-0006]
    6. A shutter according to any one of claims 1 to 5, characterized in that said upstream half-body (6) is formed by a second molded assembly between a hollow upstream metal support (25) and a second injected layer (26) made of a chemically inert thermoplastic polymeric material and said downstream half-body (7) is formed by a third assembly molded between a downstream hollow metallic support (27) and a third injected layer (28) made of a chemically inert thermoplastic polymeric material.
    [7" id="c-fr-0007]
    7. obturator according to claim 6, characterized in that said second and third injected layers (26 and 28) respectively each have on the one hand a tubular shape (29, 30) arranged at said upstream / downstream orifice (8 and 9 ) of said upstream / downstream half-body (6 and 7) and on the other hand two end flanges (31 and 32, 33 and 34) arranged on either side of said tubular shape (29, 30).
    [8" id="c-fr-0008]
    8. Shutter according to claim 7, characterized in that said upstream hollow metal support (25) and said downstream hollow metal support (27) respectively have circular machining operations (35) making it possible to form retaining notches (36) at the level of said end flanges (31 and 32, 33 and 34) of each of said second and third injected layers (26 and 28).
    [9" id="c-fr-0009]
    9. Method (40) for manufacturing an in-line shutter (1) according to any one of claims 1 to 8, characterized in that said method (40) comprises a first step of assembly by overmolding (41) between said central metal support (11) and said first injected layer (12) of a chemically inert thermoplastic polymer material to form said closure plate (2).
    [10" id="c-fr-0010]
    10. Method according to claim 9, characterized in that said method (40) comprises a second step of assembly by overmolding (42) between said upstream hollow metal support (25) and said second injected layer (26) made of a polymer material chemically inert thermoplastic to form said upstream half-body (6) and a third step of assembly by overmolding (43) between said downstream hollow metallic support (27) and said third injected layer (28) of a chemically inert thermoplastic polymer material for forming said downstream half-body (7).
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    同族专利:
    公开号 | 公开日
    FR3080665B1|2020-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AU538178B2|1980-05-16|1984-08-02|Salina Vortex Corp.|Material handling|
    FR3041407A1|2015-09-18|2017-03-24|Onis|MOBILE SHUTTER FOR FLUID CHANNEL|FR3107579A1|2020-02-26|2021-08-27|Onis|In-line shutter comprising a shutter plate movable in translation|
    FR3113309A1|2020-08-07|2022-02-11|Onis|In-line shutter with blanking plate|
    法律状态:
    2019-04-18| PLFP| Fee payment|Year of fee payment: 2 |
    2019-11-01| PLSC| Search report ready|Effective date: 20191101 |
    2020-04-20| PLFP| Fee payment|Year of fee payment: 3 |
    2021-04-23| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1800378A|FR3080665B1|2018-04-27|2018-04-27|ONLINE SHUTTER WITH MOBILE SHUTTER PLATE IN PLAN AND MANUFACTURING METHOD THEREOF|
    FR1800378|2018-04-27|FR1800378A| FR3080665B1|2018-04-27|2018-04-27|ONLINE SHUTTER WITH MOBILE SHUTTER PLATE IN PLAN AND MANUFACTURING METHOD THEREOF|
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