EP2984005B1 - Selbsteinstellender schwimmkörper und aus solchen schwimmkörpern bestehender verdunstungsschutz - Google Patents

Selbsteinstellender schwimmkörper und aus solchen schwimmkörpern bestehender verdunstungsschutz Download PDF

Info

Publication number
EP2984005B1
EP2984005B1 EP14721433.2A EP14721433A EP2984005B1 EP 2984005 B1 EP2984005 B1 EP 2984005B1 EP 14721433 A EP14721433 A EP 14721433A EP 2984005 B1 EP2984005 B1 EP 2984005B1
Authority
EP
European Patent Office
Prior art keywords
float
floats
liquid
self
positionable
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.)
Active
Application number
EP14721433.2A
Other languages
English (en)
French (fr)
Other versions
EP2984005A1 (de
Inventor
Laurent Bedel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELBE TECHNOLOGIES
Original Assignee
Elbe Technologies
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Elbe Technologies filed Critical Elbe Technologies
Publication of EP2984005A1 publication Critical patent/EP2984005A1/de
Application granted granted Critical
Publication of EP2984005B1 publication Critical patent/EP2984005B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets
    • B65D88/36—Large containers having floating covers, e.g. floating roofs or blankets with relatively movable sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/38—Means for reducing the vapour space or for reducing the formation of vapour within containers
    • B65D90/42—Means for reducing the vapour space or for reducing the formation of vapour within containers by use of particular materials for covering surface of liquids

Definitions

  • the present invention relates to the field of the coating of liquid surfaces, and more particularly to the isolation of the liquid with respect to the atmosphere in order to limit the phenomena of evaporation or the emanations of the liquid but also to limit the emission of vapors harmful or toxic, the formation of foam and splashing when the surface of the liquid is moving.
  • the covering is made by means of a floating screen consisting of a new type of self-positionable floats.
  • the floating screen according to the invention consists of floats which, once placed on the surface of the liquid, will cover substantially all of this surface.
  • Said new floats form a screen that can be repositioned to form a screen following movements of the liquid consecutive to a vigorous stirring phase (filling or withdrawal of the container) or moderate (variation of level with or without modification of the geometry of the surface of the liquid).
  • Containers in which a screen consisting of self-positionable floats can be used are typically liquid storage tanks. Indeed, certain liquids such as hydrocarbons or food liquids require isolation vis-à-vis the atmosphere when stored in containers to preserve their qualities, avoid contamination of the atmosphere by them or still avoid losses of material by evaporation. In the containers the volume of liquid will vary depending on the filling and withdrawal maneuvers of the container. In order to cover the surface of the stored liquid, while avoiding manipulation and contaminations, and while maintaining a maximum of liquid volume without loss, it is therefore necessary to use a device that can form a screen according to the variations in level and movements of the liquid, whether large or moderate, within the storage container.
  • the patent application FR2250884 describes such floats for use with similar floats to cover the surface of a liquid.
  • These floats consist of a floating body comprising a hexagonal shaped skirt whose height is at least 5 mm. The shape of the float is chosen so that the skirt is at the surface of the liquid whatever the position of the float. The float waterline so coincides with the location of the skirt. When the surface of the liquid is flat, the floats are positioned relative to each other through the sides of the hexagonal skirts, thus forming a screen.
  • This device is designed to withstand the wind when storing liquids, especially water, in tanks located outside.
  • the floats are superimposed or agglutinate depending on the movements of the water during the tank filling for example.
  • the floats will move and be superimposed, the screen then being completely unstructured, with no real possibility that the floats are positioned correctly again to form a new screen.
  • These floats do not seem to be self-positioning.
  • the patent application JP08193731 describes spherical shaped floats equipped with skirts and intended to form a protective screen for liquids.
  • the floats consist of two hemispheres that are joined at the level of the skirt. The skirt rests on the surface of the liquid, so the flotation plane of the float coincides with the skirt.
  • the upper hemisphere is hollow and the lower hemisphere contains a ballast weight and an opening for the liquid to enter. The float is thus held in place on the surface of the liquid as it moves.
  • the upper hemisphere is out of the liquid and the lower hemisphere is immersed and weighted, a flip-flop is unlikely.
  • this float is dissymmetrical with respect to the plane of the skirt so in the event of a flotation of the float following a movement of the liquid, the recovery function is no longer ensured.
  • the floats are weighted, it is very likely that they are wedged next to each other, without their skirts are superimposed, thus leaving gaps between them and exposing the stored liquid to the atmosphere. Therefore these floats can not be considered as auto positionable.
  • the patent application JP2000319952 describes floats capable of forming a liquid cover. These floats are designed to prevent the evaporation of water in storage tanks. These floats consist of two hemispheres and a skirt that rests on the liquid. The lower hemisphere is provided with an orifice thus made permeable to the liquid and the float contains a floating ball that can move up and down inside the float. Once flotation, the float contains liquid and will move according to the movements of said liquid because it is weighted by water. It is unlikely that these floats will turn around, however they will wedge themselves next to each other rather than overlapping to form a screen, leaving gaps between them. These floats can not be considered as self-positioning.
  • the utility model DE3927616 describes floats capable of forming an anti-evaporation screen for liquids stored in tanks.
  • the floats consist of a hollow body or a floating solid body whose median plane comprises a skirt.
  • the materials are either plastic, metallic or mixed.
  • the skirt does not necessarily rest on the surface of the liquid and consists of two thicknesses, one of which has a fold which is wound around the outer edge of the other thickness. The extra thickness thus formed at the outer edge of the skirt of each float will degrade the operation of the float screen system because the floats will collide during the return to calm after a phase of vigorous agitation (filling or withdrawal of the container ) or moderate (level variation with geometric defect).
  • each float consists of a body of given shape (lens, sphere, flattened sphere, polyhedron, etc.) and a border that rests on the surface of the liquid to contribute to the buoyancy and stability of the body. each float. The waterline and the center of gravity of the float merge with the border. These floats consist of two half-floats equipped with a border.
  • the edge thickness is calculated to promote the overlap of the edges to avoid appearing interstices.
  • center of gravity and waterline are in the same plane, the heeling phenomenon is not possible and curbs collide in case of movement of the liquid.
  • the floats will then stall against each other, or superimposed, which will cause the exposure of the liquid in some places. These floats are not perfectly self-positioning.
  • the present invention provides a floating screen consisting of self-positionable floats capable of forming a screen on the surface of a liquid to isolate this liquid from the atmosphere as well in the stationary phase, as after a intense or moderate agitation phase.
  • the present invention provides a floating screen consisting of self-positionable floats whose percentage of overall coverage of the surface of a liquid is greater than the devices described in the prior art. Indeed, thanks to new self-positionable floats, the floating screen according to the invention does not expose the liquid even in case of return to the stationary phase after sudden movements of the liquid surface to be covered.
  • Each float will find a functional place within the screen, without overlapping floats or setting the floats relative to each other.
  • the protective screen will be reformed after shaking thanks to the self-positioning character of the floats according to the invention.
  • the present invention provides an improvement to the floats described in FR0957052 and the overlay screen they are likely to form.
  • the invention proposes a floating screen consisting of self-positionable floats in which the floats consist of a floating body and a skirt, said skirt extending parallel to the surface of the liquid and being located above the float waterline.
  • the principle of these self-positionable floats is to allow the phenomenon of lodging but in a controlled manner, that is to say that in the stationary state each float is stable, and also that the floats can fulfill their function whatever the direction in which they float, that is to say that after agitation of the surface of the liquid each float must return to a perfectly functional state.
  • each float is placed in the plane of the skirt, on the axis of symmetry connecting the two ends of the float and raised relative to the surface of the liquid at rest.
  • the screen formed by adjacent floats allows the skirts of each float to be superimposed above the surface of the liquid on which floats the screen. This minimizes the possibility of exposure of the stored liquid because the rings do not rest on the surface of said liquid. Moreover this also minimizes the possibility for the bodies of the floats to be superimposed. Thus the screen formed by the new floats according to the invention no longer reveals interstices that expose the liquid to the atmosphere of the container or the outside atmosphere.
  • each float allows the screen to adapt to the light movements of the liquid surface and in case of strong agitation during the filling or racking phases, the floats will move and the screen will be disorganized but as soon as the liquid returns to a quieter state, the self-positioning floats will come to form a new screen perfectly covering the surface of the liquid.
  • the present invention describes a self-positionable float within a screen floating on a liquid to be isolated from the atmosphere having the features of claim 1, namely that it consists of a sealed body (2) of spherical shape flattened and skirt (3) in the form of a plane ring located around said body (2), made of a plastic material, configured so that a) the body (2) has a vertical part on either side of the skirt ( 3), (b) the center of gravity of said float (1) is raised above its steady state waterline and is located in the plane of the skirt (3) on the axis connecting the two body poles (2) and that c) the skirt (3) is located parallel to and above the float line (1) in the stationary state, and d) the diameter (d3) of the skirt (3) makes 1.366 to 2 times the diameter (d2) of the body (2), characterized in that the peripheral end of the skirt (3) has a radius of curvature of between 1 and 4 mm, a chamfer or a bevel.
  • any plastic material that can float on a liquid can be used to make self-positionable floats (1) according to the invention. It is however known from the prior art to use as floats elements made of plastic materials, which are hollow and contain air or foam. Moreover, as mentioned above, the storage of certain materials such as hydrocarbons requires the use of chemically inert materials, and some synthetic plastic materials commonly used by those skilled in the art may have the required chemical inertia .
  • the floats (1) according to the invention consist of a solid or hollow plastic material. These floats (1) of plastic material may contain functional additives such as glass beads or glass fiber to ensure mechanical stability or carbon black to opacify the material or any additive to modify the electrical conductivity of the material.
  • the floats (1) are made of a hollow plastic material.
  • Floats (1) according to the invention are typically made of a plastic material selected from polyolefins, polyacetals, fluorinated polymers and polyamides, preferably polyoxymethylene, polyethylene and polypropylene, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) and polyamides 6 and 6-6.
  • PTFE polytetrafluoroethylene
  • PVDF polyvinylidene fluoride
  • polyamides 6 and 6-6 polyamides 6 and 6-6.
  • These polyamides, polyacetals, fluorinated polymers or polyolefins may contain functional additives to increase their mechanical properties or facilitate the manufacture of floats. This is known to those skilled in the art who will have no difficulty in adapting the additives to the product he wants to manufacture and to the manufacturing method he has selected.
  • the floats (1) according to the invention consist of a plastic material selected from polyolefins, polyacetals, fluoropolymers and polyamides, preferentially polyoxymethylene, polyethylene and polypropylene, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) and polyamides 6 and 6-6, to which functional additives are added.
  • a plastic material selected from polyolefins, polyacetals, fluoropolymers and polyamides, preferentially polyoxymethylene, polyethylene and polypropylene, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) and polyamides 6 and 6-6, to which functional additives are added.
  • the body (2) of the float (1) is of flattened spherical shape (see Fig. 1 ). It is known from the prior art to adapt the shape of the floats to the total mass of the float depending on the density of the liquid to be covered.
  • the skirt (3) which surrounds the body must adopt a shape corresponding to that of the body (2) and allowing it to come into contact with the other floats (1) and to be superimposed on the skirts (3) of the other floats (1). ) to form screen (5).
  • the skirt (3) is in the form of a flat ring. Furthermore, the skirt (3) has at its end a radius of curvature of between 1 mm and 4 mm, a chamfer or bevel to minimize the possibility that the self-positionable floats (1) forming a screen (5) are wedged together. against the others following agitation of the liquid (4).
  • the float (1) according to the invention consists of a body (2) of spherical shape and a skirt (3) in the form of a ring.
  • the float (1) according to the invention consists of a hollow body (2) of spherical flattened shape, a skirt (3) in the form of a flat ring, made of a selected material. among polyoxymethylene, polyamide 6, polyamide 6-6, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) polypropylene or polyethylene.
  • PTFE polytetrafluoroethylene
  • PVDF polyvinylidene fluoride
  • each skirt (3) has a maximum thickness of 4 mm.
  • each skirt (3) has a radius of curvature of between 1 mm and 4 mm, a chamfer or a bevel.
  • each float (1) has a skirt (3) whose thickness is 4 mm maximum and whose end has a radius of curvature of between 1 mm and 4 mm, a chamfer or bevel .
  • the skirt (3) has a radius of curvature of between 1 mm and 4 mm, preferably between 1 mm and 3 mm. In a preferred embodiment, the skirt (3) has a radius of curvature of 2 mm.
  • the self-positionable float (1) according to the invention is designed such that its waterline is located below the skirt (3).
  • the skirt does not contribute to the floatation by constituting an additional support surface on the liquid (4) for the float (1).
  • Only the lower part of the float (1) is in contact with the liquid (4), the upper part and the skirt (3) are in contact with the atmosphere of the container or the outside atmosphere depending on the situation.
  • One skilled in the art will easily adapt the total mass of the float (1) and also the material and the shape of the float (1) to the density of the liquid (4) to cover.
  • the fact of shifting the center of gravity located in the plane of the skirt (3) at a certain distance from the plane of the waterline is also a conventional approach for those skilled in the art.
  • the float heeling phenomenon (1) is authorized by this particular structure but the heel is also controlled so that it is not excessive and does not destabilize the protection screen (5). In the stationary state there is no self-positioning of the floats (1) within the screen (see Fig. 2 ).
  • the floating screen (5) consisting of self-positionable floats (1) according to the invention has an optimal recovery rate that may exceed 99% depending on the selected float form.
  • the example described below relates to floats (1) of spherical flattened shape and it is with such floats (1) that this recovery rate was found in a storage tank. Indeed, the fact that the skirts (3) of each float (1) do not rest on the surface of the liquid allows the formation of a new screen (5) and minimize the appearance of interstices when the surface of the liquid returns to calm after a lively or moderate agitation which destabilized said screen.
  • the floating screen (5) consists of self-positionable floats (1) made of a plastic material.
  • Said material is selected from polyolefins, polyacetals, fluorinated polymers and polyamides, preferentially polyoxymethylene, polyethylene and polypropylene, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) and polyamides 6 and 6-6.
  • PTFE polytetrafluoroethylene
  • PVDF polyvinylidene fluoride
  • each self-positionable float (1) is of flattened spherical shape and the skirt (3) in the form of a ring, seen from above each of these elements is inscribed in a given diameter, the diameter ( d3) of the skirt (3) being greater than that of the body (2) (see Fig. 4 ).
  • the diameter (d3) of the skirt (3) is 1.366 to 2 times the diameter (d2) of the body (2), preferably 1.4 to 1.6 times the diameter (d2) of the body (2). ).
  • These ranges of proportions correspond to a good compromise between the buoyancy properties of the floats (1) and an optimal overlap of the interstices between the bodies (2) of the floats (1).
  • the floats (1) forming a screen (5) have a spherical shape or a lens shape, these floats (1) have a symmetry particularly conducive to their self-positioning on the surface of the liquid (4).
  • the screen (5) consists of floats (1) of flattened spherical shape and each float has a vertical part above and below the skirt (3) (see FIG. Fig. 1 ) so that the floats (1) can not easily be superimposed when the surface of the liquid (4) is moving.
  • the height of this vertical part also makes it possible to adjust the height of the center of gravity of the float relative to the surface of the liquid (4) covered according to its density.
  • the invention also describes a screen (5) floating on the surface of a liquid (4) to be isolated from the atmosphere consisting of self-positionable floats (1), characterized in that each self-positionable float (1) has the characteristics of claim 1.
  • Such a screen (5) consisting of self-positionable floats (1) is particularly suitable for hydrocarbons when the floats (1) consist of a plastic material combined or not with functional additives.
  • a self-positionable float (1) according to the invention has the chemical inertia essential for its function to form screen (5) on the surface of a hydrocarbon.
  • each float (1) must be perfectly tight and smooth and have no roughness on its surface that could alter its self-positioning character.
  • the body of the float according to the invention can be made of any plastic material likely to float.
  • the float is preferably made of plastic material by injection molding. If the body (2) and the skirt (3) are made in one piece, it is necessary to fill the orifice that was used for the injection perfectly tight and without affecting the balance of the float (1) for not not affect the waterline.
  • the thickness of the skirt (3) being limited, it is not obvious that the thickness of the walls of the body (2) is the same as that of the skirt (3) and it would then be necessary to make by injection -moulding one piece having different thicknesses. Except it is well known to those skilled in the art that these two technical aspects are difficult to achieve.
  • the gluing means must be inert with respect to the liquid (4) to be coated, and this can be complex. It is therefore preferred a method of welding the two half-floats to form the float (1).
  • the laser welding technique gives interesting results but requires that one of the half-floats is transparent to the laser and the other rendered opaque to laser radiation by adding an absorbent dye, for example carbon black. The welding is done through a laser beam that passes through the transparent half-float and heats very localized the soldering surface of the colored half-float maintained under pressure.
  • the present invention proposes a novel method of manufacturing floats (1) intended to constitute a liquid-covering screen (4) according to the invention.
  • the body (2) of the float (1) is preferably made of a plastic material by injection molding.
  • the plastic material is selected from polyolefins, polyacetals, fluoropolymers and polyamides, preferentially polyoxymethylene, polyethylene and polypropylene, polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF) and polyamides 6 and 6-6.
  • PTFE polytetrafluoroethylene
  • PVDF polyvinylidene fluoride
  • Complementary half-floats are molded to the desired shape: some are equipped with a skirt (3) and a male assembly means and the others with a female assembly means.
  • the half-floats carrying the skirt (3) are equipped with a female assembly means and the other half-floats of a male assembly means.
  • the male assembly means is a fusible tooth and the female assembly means is a groove for channeling the melt during welding.
  • the body (2) of the float (1) is composed of two parts, or half-floats, whose shapes are complementary in order to be assembled sealingly.
  • One of the half-floats carries the skirt (3) according to the invention and the inside of the body (2) of the float is hollow. This hollow space can be filled, including foam.
  • the two half-floats are of identical shape.
  • the two half-floats are then assembled by rotational friction welding: the friction of the contact planes leading to a heating up to the fusion of the fuse tooth.
  • This welding means is reliable, waterproof and does not reveal a bead of material that would likely unbalance the float (1) and thus affect its waterline.
  • the float (1) consists of two half-floats of identical shape, one of which comprises a groove and the other comprises a fusible tooth and a skirt (3), the fusible tooth being intended to enter the groove, said half-floats are then assembled.
  • the two half-floats are assembled by means of a rotational friction weld.
  • the float (1) consists of two flattened half-spheres of identical shape, one of which comprises a groove and the other comprises a fusible tooth and a skirt (3), the fusible tooth being intended to enter the groove, said half-spheres are then assembled, preferably by means of a rotational friction weld.
  • the assembly of the two half-floats sealingly by welding is particularly suitable use of the screen according to the invention for the recovery of hydrocarbon tanks.
  • the plastic material is inert on the chemical level and this allows to consider the use of a screen (5) made by floats (1) made entirely of a plastic material for this use in explosive atmosphere.
  • the present invention describes a self-positionable float (1) as detailed above and which is composed of two half-floats of identical shape chosen as a function of the density of the liquid (4) to be covered and a half-float door the skirt (3) and a male welding means (7), and the other half-float carries a female welding means (6), the two half-floats being welded to form a perfectly tight float (1).
  • the float (1) is made of polyoxymethylene by injection molding. A sectional view of this float is detailed in Fig. 1 .
  • the shape of the body (2) is a flattened sphere and the skirt (3) is in the form of a ring which, in the stationary state, extends parallel to the surface of the liquid (4) and is located above from the float waterline (1) to the liquid (4).
  • the Fig. 1 shows a float (1) according to the invention in section, in a floating situation on the surface of a liquid (4) in the stationary state.
  • This float consists of a body (2) and a skirt (3). It is clearly seen that the float water line (1) is located below the skirt (3).
  • the skirt (3) does not rest on the surface of the liquid (4) and the float float (1) does not depend on the support of the skirt (3) on the surface of the liquid (4).
  • the phenomenon of lodging is allowed.
  • the Fig. 4 shows a top view of a float (1) of spherical shape.
  • the diameter of the body (d2) is less than that of the skirt (d3).
  • the diameter of the skirt (d3) is 1.366 to 2 times the diameter of the body (d2), preferably 1.4 to 1.6 times the diameter of the body (d2).
  • FIG. 2 shows a sectional view of two floats (1) flotation on the surface of a liquid (4) at rest.
  • the skirts (3) of each float (1) are superimposed to cover the interstices between the bodies (2).
  • the Fig. 3 shows a screen (5) according to the invention in view from above, or at least a screen portion (5) consisting of an assembly of seven floats (1) according to the invention. This assembly does not show any gap between the floats (1).
  • the liquid (4) thus covered is perfectly isolated from the atmosphere.
  • a screen consisting of floats as described in the example above is perfectly suited to the recovery of hydrocarbon tanks.
  • any energy input especially in electrostatic form, must be avoided.
  • the materials used for the manufacture of floats as well as the movements they are made to make between them and against the walls of the tank are potentially at risk.
  • a float according to the present invention made of an antistatic plastic material is perfectly suitable for use in ATEX conditions by the nature of the materials used and the shape of the floats intended to cooperate to form a liquid shielding screen.
  • a self-positionable float according to the invention is manufactured with a spherical shape whose dimensions are: 300 mm for the diameter of the body (d2), 440 mm for the diameter of the complete float (d3) consisting of the body and the skirt.
  • the center of gravity of the float is located 6 mm above the steady-state waterline.
  • the method of manufacture is the injection-molding of polytetrafluoroethylene (PTFE), two half-floats one of which is equipped with a half-body (2) of a skirt (3) and the other is simply a complementary half-body (2).
  • the two half-bodies have a complementary shape that allows them to form when assembled sealingly a floating hollow body.
  • the body (2) of the float (1) consists of two half-floats whose general shape is identical, one comprising a groove and the other a fuse tooth and the skirt (3).
  • the Fig. 6 shows a half-float flattened spherical shape with a flat skirt and a fuse tooth. This fuse tooth is intended to allow welding to the other half float.
  • the skirt (3) has a diameter of 440 mm and the spherical body (2) has a diameter of 300 mm.
  • the waterline of the float (1) is located below the skirt (3).
  • the distance between the skirt (3) and the surface of the liquid (4) is 6 mm.
  • a self-positionable float according to the invention is manufactured with a spherical shape whose dimensions are: 150 mm for the diameter of the body (d2), 220 mm for the diameter of the complete float (d3) consisting of the body and the skirt.
  • the center of gravity of the float is located 5 mm above the steady state waterline.
  • the method of manufacture is the injection-molding of olyoxymethylene (POM), two half-floats one of which is equipped with a half-body (2) of a skirt (3) and the other is simply a complementary half-body (2).
  • the two half-bodies have a complementary shape that allows them to form when assembled sealingly a floating hollow body.
  • the body (2) of the float (1) consists of two half-floats whose general shape is identical, one comprising a groove and the other a fuse tooth and the skirt (3).
  • the Fig. 6 shows a half-float flattened spherical shape with a flat skirt and a fuse tooth. This fuse tooth is intended to allow welding to the other half float.
  • the skirt (3) has a diameter of 220 mm and the spherical body (2) has a diameter of 150 mm.
  • the waterline of the float (1) is located below the skirt (3).
  • the distance between the skirt (3) and the surface of the liquid (4) is 5 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Level Indicators Using A Float (AREA)

Claims (8)

  1. Selbstpositionierbarer Schwimmer (1) innerhalb einer Abschirmung, die auf einer Flüssigkeit (4) schwimmt (5), die von der Atmosphäre zu isolieren ist, wobei er aus einem dichten Körper (2) mit einer abgeflachten Kugelform und aus einer Schürze (3) in Form eines ebenen Rings besteht, der sich um den Körper (2) befindet, der aus einem Kunststoffmaterial hergestellt ist, wobei er so konfiguriert ist, dass a) der Körper (2) einen vertikalen Abschnitt auf beiden Seiten der Schürze (3) aufweist, b) das Gravitationszentrum des Schwimmers (1) in Bezug auf seine Wasserlinie im stationären Zustand erhöht ist und sich in der Ebene der Schürze (3) auf der Achse befindet, welche die zwei Pole des Körpers (2) verbindet, und dass c) sich die Schürze (3) parallel bei und über der Wasserlinie (1) des Schwimmers im stationären Zustand befindet, und d) der Durchmesser (d3) der Schürze (3) das 1,366- bis 2-fache des Durchmessers (d2) des Körpers (2) beträgt, dadurch gekennzeichnet, dass das Umfangsäußere der Schürze (3) einen Krümmungsradius, der zwischen 1 und 4 mm liegt, eine Abschrägung oder Fase aufweist.
  2. Selbstpositionierbarer Schwimmer (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Kunststoffmaterial aus Polyacetalen, Fluorpolymeren, Polyamiden, Polyolefinen ausgewählt ist, die mit funktionalen Zusatzstoffen kombiniert sind oder nicht.
  3. Selbstpositionierbarer Schwimmer (1) nach Anspruch 2, dadurch gekennzeichnet, dass das Kunststoffmaterial insbesondere ausgewählt ist aus Polyoxymethylen, Polyethylen, Polypropylen, Polytetrafluorethylen, Polyvinylidenfluorid und den Polyamiden 6 und 6-6, die mit funktionalen Zusatzstoffen kombiniert sind oder nicht, die vorgesehen sind, um eine mechanische Stabilität sicherzustellen, um sie undurchsichtig zu machen, oder um die elektrische Leitfähigkeit des Materials zu verändern.
  4. Selbstpositionierbarer Schwimmer (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass er so konfiguriert ist, dass die Schürze (3) und das Gravitationszentrum des Schwimmers (1) sich mindestens 5 mm über der Wasserlinie des Schwimmers (1) befinden.
  5. Selbstpositionierbarer Schwimmer (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Durchmesser (d3) der Schürze (3) das 1,4- bis 1,6-fache des Durchmessers (d2) des Körpers (2) beträgt.
  6. Selbstpositionierbarer Schwimmer (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Schürze (3) eine maximale Dicke von 4 mm hat.
  7. Selbstpositionierbarer Schwimmer (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Umfangsäußere der Schürze (3) einen Krümmungsradius von 2 mm aufweist.
  8. Abschirmung, die auf der Oberfläche einer Flüssigkeit (4) schwimmt (5), die von der Atmosphäre zu isolieren ist, dadurch gekennzeichnet, dass sie aus selbstpositionierbaren Schwimmern (1) nach einem der Ansprüche 1 bis 7 besteht.
EP14721433.2A 2013-04-08 2014-04-08 Selbsteinstellender schwimmkörper und aus solchen schwimmkörpern bestehender verdunstungsschutz Active EP2984005B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1300802A FR3004171B1 (fr) 2013-04-08 2013-04-08 Ecran flottant constitue de flotteurs auto positionnables
PCT/FR2014/000078 WO2014167192A1 (fr) 2013-04-08 2014-04-08 Flotteur auto positionnable, écran flottant constitué de tels flotteurs et méthode de fabrication d'un tel flotteur

Publications (2)

Publication Number Publication Date
EP2984005A1 EP2984005A1 (de) 2016-02-17
EP2984005B1 true EP2984005B1 (de) 2018-06-13

Family

ID=49000977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14721433.2A Active EP2984005B1 (de) 2013-04-08 2014-04-08 Selbsteinstellender schwimmkörper und aus solchen schwimmkörpern bestehender verdunstungsschutz

Country Status (3)

Country Link
EP (1) EP2984005B1 (de)
FR (1) FR3004171B1 (de)
WO (1) WO2014167192A1 (de)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1483586A (en) 1973-11-09 1977-08-24 Cullen A Covering or blanketing liquid surfaces and float members for effecting same
DE2646084A1 (de) * 1976-10-13 1978-04-27 Heinz Ludwig Dipl P Guntermann Schwimmkoerper zur abdeckung fluessiger oberflaechen zur verminderung von emissionen
JPS5737582A (en) * 1980-08-07 1982-03-01 Yuuichi Honda Method of covering liquid housing opening tank
DE3927616A1 (de) 1989-06-10 1990-12-13 Karl Prof Bennemann Schwimmkoerper als verdunstungsschutz
CN2114635U (zh) * 1992-03-03 1992-09-02 陈凤林 节能净化覆盖塑料球
CN2169611Y (zh) * 1992-08-18 1994-06-22 玉环县节能净化器材厂 高效净化球
JPH08193731A (ja) 1995-01-17 1996-07-30 Sekisui Plastics Co Ltd 水槽水面の遮蔽装置
JP3854008B2 (ja) 1999-05-14 2006-12-06 東京都市サービス株式会社 酸素溶解遮蔽体
JP2006089122A (ja) * 2004-09-27 2006-04-06 Daiyu Kogyo Kk 液面被覆用浮子およびその製造方法
FR2951144B1 (fr) * 2009-10-09 2011-11-04 Laurent Bedel Flotteur pour couverture de cuve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2984005A1 (de) 2016-02-17
FR3004171A1 (fr) 2014-10-10
WO2014167192A1 (fr) 2014-10-16
FR3004171B1 (fr) 2015-12-25

Similar Documents

Publication Publication Date Title
EP2491293B1 (de) Mehreckiger flüssigerdgasbehälter
CH440007A (fr) Récipient en matière plastique
EP2230065B1 (de) Formwerkzeug zum Warmformen mit Wärmedämmung, und entsprechendes Verfahren
EP0514243B1 (de) Vorrichtungen zum Auffangen und Kühlen eines geschmolzenen Kerns eines Kernreaktors nach einem Unfall
EP0751530B1 (de) Abstandshalter für Kernreaktorbrennstabbündel mit aufgebrachten Federn
EP2984005B1 (de) Selbsteinstellender schwimmkörper und aus solchen schwimmkörpern bestehender verdunstungsschutz
EP3184772B1 (de) Fahrzeugbehälter, der eine halbdurchlässige membran umfasst
FR2473213A1 (fr) Dispositif de confinement a long terme de dechets radioactifs ou toxiques et son procede de fabrication
FR2923399A1 (fr) Obturateur automatique perfectionne pour appareil de separation et retention de liquide leger, appareil avec obturateur.
EP2774873B1 (de) Lebensmittelverpackung mit wiederverschließbarem Verschlussdeckel
FR2970327A1 (fr) Detecteur de niveau pour reservoir et reservoir de liquide comprenant un tel detecteur
FR2883700A1 (fr) Dispositif d'accrochage d'une cage de conchyliculture, notamment d'ostreiculture, a un support essentiellement tubulaire
FR2951144A1 (fr) Flotteur pour couverture de cuve
WO2020079347A1 (fr) Soudage d'une membrane etanche d'une cuve
FR2502849A1 (fr) Pile seche galvanique et procede pour la sceller
EP3826796A1 (de) Schweissen einer dichtmembran eines wärmedämmkörpers eines tanks
FR2461792A1 (fr) Perfectionnements apportes aux reservoirs d'eau, notamment aux piscines
EP3215248B1 (de) Vorrichtung zum abschöpfen von oberflächenflüssigkeit
EP3956208A1 (de) Vorrichtung zum vertäuen von schwimmenden oberflächeneinheiten, entsprechendes verfahren zum installieren und kalibrieren derselben
EP1304370A1 (de) Einsatz für einer rotierende Flasche
BE636572A (de)
FR3095421A1 (fr) Dispositif de séparation, réservoir contenant un tel dispositif et engin spatial équipé d’un tel réservoir
EP4045159B1 (de) Klettergriff mit einem radiokfrequenzidentifikationselement
FR2629062A1 (fr) Installation pour le stockage d'un produit
EP3647406B1 (de) Vorrichtung zur aufnahme, zum transport und zur diffusion von licht für einen foto-bioreaktor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20151109

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20160805

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180108

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ELBE TECHNOLOGIES

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1008272

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180615

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014026954

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180613

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180913

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180913

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180914

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1008272

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181013

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014026954

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20190314

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181015

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180613

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20240131

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250428

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20250422

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20250424

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20250415

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20250501

Year of fee payment: 12