EP0573327B1 - Structure préfabriquée de formation de parois étanches et thermiquement isolantes pour enceinte de confinement d'un fluide à très basse température - Google Patents
Structure préfabriquée de formation de parois étanches et thermiquement isolantes pour enceinte de confinement d'un fluide à très basse température Download PDFInfo
- Publication number
- EP0573327B1 EP0573327B1 EP93401304A EP93401304A EP0573327B1 EP 0573327 B1 EP0573327 B1 EP 0573327B1 EP 93401304 A EP93401304 A EP 93401304A EP 93401304 A EP93401304 A EP 93401304A EP 0573327 B1 EP0573327 B1 EP 0573327B1
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- EP
- European Patent Office
- Prior art keywords
- external
- layer
- fluid
- tight
- joint
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/025—Bulk storage in barges or on ships
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
- F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0329—Foam
- F17C2203/0333—Polyurethane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0354—Wood
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0358—Thermal insulations by solid means in form of panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
- F17C2203/0643—Stainless steels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0646—Aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/066—Plastics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0663—Synthetics in form of fibers or filaments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/01—Mounting arrangements
- F17C2205/0153—Details of mounting arrangements
- F17C2205/0184—Attachments to the ground, e.g. mooring or anchoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/033—Small pressure, e.g. for liquefied gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/031—Dealing with losses due to heat transfer
- F17C2260/033—Dealing with losses due to heat transfer by enhancing insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/036—Avoiding leaks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
- F17C2270/0107—Wall panels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S220/00—Receptacles
- Y10S220/901—Liquified gas content, cryogenic
Definitions
- the present invention relates to a prefabricated structure allowing waterproof and thermally insulating walls for a thermally insulated containment, such as a tank tight storage and / or transport of a fluid at very low temperature, such as a liquefied gas or a liquid cryogenic.
- This insulation system includes at least two layers of insulating and waterproof material such as plastic foam closed cells, formed by juxtaposition of prefabricated plates.
- the two layers of insulation are sandwiched in pairs load distribution panels inside the structure, by example in plywood.
- a panel attached to the partition external is glued to a layer of insulation called “external”, while the other panel which is integral with the internal barrier is glued to a another so-called “internal” layer.
- buffers made in the same type of material as the insulation plates are arranged in the joints between the juxtaposed plates of the outer layer and then are respectively covered with a hermetically glued strip on the outer layer and generally comprising a central sheet waterproof aluminum and two layers of fiberglass fabric.
- the aim of the present invention is to overcome the above drawbacks, by proposing a simple and economical structure in which the insulation layers are continuous and therefore perfectly waterproof.
- the invention relates to a prefabricated structure of forming waterproof and thermally insulating walls for realization of a thermally insulated enclosure for confining a fluid with very low temperature such as a liquefied gas, and of the type comprising a substantially flexible internal or primary waterproof barrier which is integral with a so-called internal distribution panel, an external partition rigid forming a support for the structure and of which another is integral so-called external panel and two intermediate layers of insulation thermal sandwiched between the distribution panels and say internal and external respectively, each layer which is produced by juxtaposition of insulating plates of waterproof material such as by example closed cell plastic foam, defines joints between the plates arranged respectively opposite a plate of the other layer, each joint of the outer insulation layer being covered by a strip glued between the two layers of insulation, characterized in that the external distribution panels are fixed to the outer layer, in particular by screws or the like, arranged in look of holes formed in the outer layer at a distance from the joints, and a sealed connection made of insulating material fills and adheres hermetically at each
- the strip of covering consists of a continuous reinforcement sheet of fiberglass or the like, which extends over a surface substantially higher than that of the juxtaposed plate of the insulation layer internal, next to the joint to be covered and preferably over the entire surface of the corresponding wall formed by the structure.
- At least one of the connections aforementioned is an insert of shape corresponding to that of the joint or hole to be filled, including at least the peripheral surface outer is coated with an adhesive material, preferably foaming.
- connection is consisting of two elements that are substantially symmetrical with respect to a median assembly plane, and whose internal assembly surfaces in opposite are coated with adhesive material.
- the invention is also characterized in that at least one of the aforementioned fittings is formed in situ by pressure injection of the aforementioned waterproof insulation plastic inside the hole or the join to be completed.
- the material forming the aforementioned fittings is injected by through a tool resting against the surface of the layer external insulation opposite to the external partition, and fixed to the latter next to the opening of the hole or the joint to be filled.
- a pad made of waterproof material on which adheres hermetically the aforementioned connection of a joint is interposed between the reinforcement panel and the external partition.
- a flexible connector is interposed between the insulating material plates which constitute the inner layer of insulation and adheres to them.
- structure 1 which makes it possible to form watertight walls and thermally insulating for the realization of an enclosure of containment or tank, for example to store and / or transport a fluid at very low temperature.
- structure 1 is a tank constituted by an assembly sealed and insulated walls, in which a cryogenic liquid such as a very cold liquefied gas, such as methane in particular, can to be stored.
- Structure 1 includes a sealed internal envelope capable of containing the fluid to be stored, which is composed by assembling elements prefabricated jointly forming for each wall of the structure 1, an internal or primary waterproof barrier 2.
- the barrier primary 2 is formed by thin metal elements such as sheet steel stainless or aluminum.
- the reference numeral 2a designates ribs projecting parallel to the connections 2b between the different elements of the barrier 2, which allow the envelope constituted by this barrier to be substantially flexible, in order to be able to deform under the effect of the stresses, in particular thermal generated by the fluid stored therein.
- a rigid external partition 3 of the structure 1 acts as a support for the latter.
- this partition 3 is a self-supporting sheet metal of a ship's hold or double-hold merchant, such as an LNG carrier.
- other types of partitions rigid with suitable mechanical properties such as including a concrete wall in a land construction, can be used as an external support wall for the structure 1.
- a thermal insulation system generally designated as 4 is provided between the primary barrier 2 and the external partition 3.
- the insulation or insulation system 4 of the structure 1 comprises in particular an internal insulation layer 42 to which the primary barrier 2, as well as an external insulation layer 43 secured of the external support partition 3.
- the external and internal layers 42, 43 are produced from a waterproof thermal insulation material.
- a waterproof thermal insulation material e.g., a thermoplastic material
- closed-cell plastic or synthetic foam e.g., a foam closed cells based on polyurethane or polyvinyl chloride in particular may be perfectly suitable for the realization of these insulation layers 42.43.
- FIG. 1 it can be seen that the two insulation layers 42, 43 are sandwiched or sandwiched between two distribution panels efforts 52 and 53.
- These panels 52, 53 respectively internal and external, are for example made from assembled wooden elements plywood or laminated.
- Internal and external panels 52 and 53 allow to distribute almost uniformly in the structure and in particular the insulation system 4, the forces for example linked to deformations of the external partition 3 and of the envelope defined by the internal barrier 2.
- the panel 52 is supported, and preferably glued to the top surface (i.e. closest to the barrier 2) of the insulation layer 42, while the external panel 53 is in abutment, and preferably glued to the lower surface (namely facing the partition 3) of the insulation layer 43.
- each layer of insulation 42, 43 is formed by juxtaposition of insulating plates of material waterproof, designated in 42a or 43a, respectively, and whose shape is generally rectangular prismatic. It goes without saying that in corner or edge parts of the structure 1, the insulating plates 42a or 43a can be bevelled at an angle appropriate to that which is formed by structure 1 at this edge, in order to form the largest possible joins. In addition, the plates 42a, 43a will be prefabricated with standard dimensions, which obviously may be modified by cutting according to the shape of the structure to be produced.
- the insulating plates 42a, 43a are arranged end-to-end so as to define in each layer 42,43 generally linear joins 62, 63 respectively.
- These joints 62, 63 generally extend in a direction plane perpendicular to the median plane of panels 52, 53, over at least the entire thickness of the insulation layer corresponding 42, 43.
- Each of the joints 63 formed in the outer layer is covered by a strip 70 which is interposed and glued between the two layers of insulating foam 42 and 43 and comes to the right of a plate 42a of the internal layer 42.
- the distribution panels 53 are fixed to the external partition 3, in particular by visible screws or the like 35, in Figure 5.
- These screws 35 shown in the other figures only by their longitudinal axis, are arranged opposite holes 435, themselves formed in the outer insulation layer 43, away from the joints 63 between the different juxtaposed plates 43a constituting this layer.
- each of the joints 63 and all the holes 435 in question are filled by a fitting 80 in thermal material insulating and waterproof.
- These insulating and waterproof fittings 80 may in particular be made of the same material or of a material similar to that of insulation layers 42 and 43, for example in ethyl acetate vinyl.
- all the fittings 80 arranged in the joints 63 and in the holes 435 of the layer 43 are glued to adhere tightly to the walls of hole 435 or joint 63 corresponding, in order to make the outer layer 43 continuous and waterproof over the entire surface defined by structure 1.
- the secondary seal is obtained by hermetically joining the plates 43a and fittings 80, so that the prefabricated layer of external insulation 43 forms, after assembly and bonding, a secondary barrier continuous and therefore perfectly waterproof.
- the joints 62 between the plates 42a of the insulation layer internal will preferably also be hermetically sealed with flexible joints (possibly glued) in liquid mastic cured by example.
- the secondary barrier is constituted by all of the insulation system 4.
- each cover strip 70 will reinforce effectively the cohesion between the joint fittings 80 and the plates insulation 42a, 43a.
- each strip of overlap 70 should extend far beyond the surface of the outer layer 43 where the holes 435 and the joint 63 are formed at cover.
- each reinforcement strip 70 it is substantially equal to that of the corresponding external plate 42a. It is interesting if the assembly imperatives of the elements prefabricated structures 1 allow, to fully cover the outer layer of insulation 43 with a reinforcing fabric on which the reinforcing strips 70 can be glued.
- the fittings 80 provided to fill the holes 435 as well as the joints 63 illustrated are made up of inserts of a shape corresponding to that of orifices (63,435) to be filled in layer 43. More specifically, the fitting intended to be housed in the direction of arrow F1 in the joint 63 and designated at 83, is a tight flat seal.
- This fitting in flat joint shape 83 has a length in the direction of the arrow F1 which is substantially equal to the thickness of the assembly constituted by layer 43 and panels 53.
- a pad 33 preferably made in a waterproof flexible plastic foam is interposed between the panels 53 arranged on either side of the joint 63, and the external partition 3.
- This buffer 33 whose section along a perpendicular transverse plane in the median plane P of the joint 63 is trapezoidal, rests by one of its parallel faces with the smallest surface, against the face internal of the partition 3.
- the longitudinal edges of its face most important parallel are respectively pressed against the face external facing the partition 3 of one of the panels 53 contiguous to the joint 63.
- This tightening of the pads 33 allows to obtain a sealed contact between the latter and panels 53.
- the tightness of this contact could be further improved by applying a hermetic adhesive between the lateral edges of each pad 33 and the corresponding panels 53.
- These pads 34 are glued on the one hand to the external partition 3 and on the other hand to one of the panels 53.
- each fitting 80 is coated a suitable layer of glue, preferably foaming glue.
- glue preferably foaming glue.
- each element will be symmetrical to the other following a plan confused with the (or one) of the median planes of port 63 or 435 to be filled using this fitting in several elements.
- the fitting 83 could be formed by assembly of two symmetrical elements with respect to the median plane P. The faces of these elements constituting the fitting 83 which extend along the plane P are coated with a suitable adhesive, preferably foaming, and assembled just before mounting and bonding the fitting thus formed in join 63.
- shims will generally include from right to left in Figure 1, for example a metal part, a sealant connection and a block of plywood or laminated wood.
- the base of fitting 80 corresponding is obviously stuck tightly on this set of wedges 36.
- an empty space 56 is provided in the joint 63 between the insulation layer 43 and the metal shim 36 located on the side opposite the corner defined by structure 1.
- fittings 85 shown in Figure 5 and provided to fill the holes 435 are in shape of cylindrical studs or logs of a shape corresponding to that of each hole. Their end faces facing the panel corresponding 53 are hollowed out at their center, so that the screw 35 protruding into this hole 435 can be housed there. However, nearby from the periphery of the log forming a connection 85, a surface is provided end ring which can be brought into contact with the panel 53 constituting the bottom of hole 435, and be hermetically glued to it panel around the screw 35. Similarly, the cylindrical walls of the fitting 85 are coated with suitable adhesive, preferably foaming, so that the latter forms after taking the glue a single piece waterproof with the insulating plate 43a inside which it comes to house.
- the insert 85 can also be obtained by assembling and gluing two elements, for example in polyurethane foam with cells closed.
- the fitting filling the joint 63 between the two juxtaposed insulation plates 43a is obtained in situ. More specially, the bottom of the joint 63 is hermetically sealed by a buffer 33 generally identical to that which has been described above.
- An injection tool 100 is fixed on the insulation system 4, so to seal the through part of joint 63.
- the injection tool 100 is composed by a plate 103 capable of coming hermetically in pressing against the upper face of the insulation layer 43 in covering the joint 63, and by at least two extension studs 135 provided to be fixed on the screws 35.
- the plate 103 of the tool 100 can be sealed against the outer layer of insulation 43, so that the interior space defined by the joint 63 is hermetically sealed.
- the plate 103 of the tool 100 comprises an injection mouth 160 associated with at least one vent which allows communication inside the joint 63 and a S source of insulating and waterproof plastic material which can expand, such as preferably closed cell polyurethane.
- the plastic material of the source S is injected under a appropriate pressure in the space defined by joint 63, in order to fill this one completely.
- the expandable material injected designated here in 84 is dried and adheres hermetically to the walls of the joint 63 and of the pad 33, a connection 80 was obtained.
- the material 84 of the fitting 80 and the two plates of insulating material 43a juxtaposed to the connection 63 corresponding form only one continuous piece, and by Consequently, in no case can a fluid pass.
- the holes 435 provided for access to the assembly or fixing screws 35 can also be filled by injection of an expandable waterproof material such as that designated in 84.
- the material 84 can fill the joint 63 up to the flower of the outer insulation layer 43, so that the plates 43a will connected continuously by the fitting 80 thus produced, and that it will be easy applying a reinforcing strip 70 to a surface thus formed.
- the load distribution panel 52 is replaced by a metal angle.
- the metal angle consists of metal elements 52a stainless such as treated steel or aluminum, which are juxtaposed and assembled using screws 45 (figure 1) which are fixed in the material plates 42a constituting the internal insulation layer 42 of the system 4.
- a flexible seal 62a such as that described with reference to the Figure 1, can be interposed between the elements 42a so as to adhere to these.
- FIG. 2 Similar to the prefabricated structure 1 of FIG. 3 which forms a corner wall, there is shown in Figure 2 a planar structure 1 consisting of prefabricated elements assembled in accordance with the invention.
- the panel 52 is consisting of elements fixed to the corresponding insulation plates 42a by collage. Inserts may be provided on such a panel 52 metal fittings 142 for fixing tools in particular. Strips in stainless steel 166 which extend transversely to each of the elements of the panel 52 are respectively crimped in housings suitable arranged in alignment and formed in the elements which constitute by juxtaposition this panel.
- layer 70 no longer has than a mechanical function, it is no longer necessary to provide a sheet waterproof metallic sandwiched at the bands and cover sheet.
- the invention significantly reduces the manufacturing costs of tanks for cryogenic liquids in e.g. ships commercial, while guaranteeing a quality of insulation and sealing greater than that which could be obtained in the prior art. the displacement of the secondary seal makes it possible to use a less expensive steel grade for the external support partition.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
Claims (10)
- Structure préfabriquée de formation de parois étanches et thermiquement isolantes pour la réalisation d'une enceinte calorifugée de confinement d'un fluide à très basse température tel qu'un gaz liquéfié, et du type comprenant une barrière étanche (2) interne ou primaire sensiblement flexible dont est solidaire un panneau (52) de répartition dit interne, une cloison externe rigide (3) formant support pour la structure (1) et dont est solidaire un autre panneau (53) dit externe, ainsi que deux couches intermédiaires d'isolation thermique (42,43) prises en sandwich entre les panneaux de répartition (52,53) et respectivement dites interne (52) et externe (53), chaque couche qui est réalisée par juxtaposition de plaques isolantes (42a, 43a) en matière étanche comme par exemple une mousse plastique à cellules fermées, définit des jointures (62, 63) entre les plaques (42a, 43a), disposées respectivement en regard d'une plaque (43a, 42a) de l'autre couche (42,43), chaque jointure (63) de la couche d'isolation externe (43) étant recouverte par une bande (70) collée entre deux couches d'isolation et obturée par un raccord (80) en matière isolante étanche, caractérisée en ce que les panneaux de répartition externes (53) sont fixés à la couche externe (43) par des vis ou analogues (35), disposées en regard de trous (435) formés dans la couche externe (43) à distance des jointures (63), et un raccord étanche (80) en matière isolante remplit et adhère hermétiquement à chacun de ces trous (435) et jointures (63), pour que la couche d'isolation externe (43) soit continue et étanche sur toute la surface formée par la structure (1).
- Structure selon la revendication 1, caractérisée en ce que la bande de recouvrement (70) est constituée par une feuille de renforcement continue en fibre de verre ou analogue, qui s'étend sur une surface sensiblement supérieure à celle de la plaque juxtaposée (42a) de la couche d'isolation inerne (42) en regard de la jointure (63) à recouvrir, et de préférence sur toute la surface de la paroi correspondante formée par la structure (1).
- Structure selon la revendication 1 ou 2, caractérisée en ce que l'un au moins des raccords (80) précités est une pièce rapportée (83,85) de forme correspondant à celle de la jointure (63) ou du trou (435) à remplir, dont au moins la surface périphérique externe est enduite avec une matière adhésive, de préférence moussante.
- Structure selon la revendication 3, caractérisée en ce que l'un au moins (83, 85) des raccords (80) est constitué par deux éléments sensiblement symétriques par rapport à un plan médian (P) d'assemblage, et dont les surfaces internes d'assemblage en vis-à-vis sont enduites de matière adhésive.
- Structure selon l'une des revendications 1 ou 2, caractérisée en ce que l'un au moins (84, 82) précité est formé in situ par injection sous pression de la matière plastique d'isolation étanche à l'intérieur du trou (435) ou de la jointure (63) à remplir.
- Structure selon la revendication 5, caractérisée en ce que la matière (84, 82) formant les raccords (80) est injectée par l'intermédiaire d'un outil (100) en appui contre la surface de la couche externe d'isolation (43) opposée à la cloison externe (3), et fixée à cette dernière en regard de l'ouverture du trou (435) ou de la jointure (63) à remplir.
- Structure selon l'une des revendications 1 à 6, caractérisée en ce que les contraintes générées à l'intérieur ou entre les plaques juxtaposées (43a) de la couche d'isolation externe (43) par les raccords (80) précités en position définitive, ont une valeur négligeable.
- Structure selon l'une des revendications 1 à 7 caractérisée en ce qu'un tampon (33,33') en matière étanche sur lequel adhère hermétiquement le raccord (80) d'une jointure (63) est interposé entre le panneau de renforcement (53) et la cloison (3) externes.
- Structure selon l'une des revendications 1 à 8, caractérisée en ce qu'un raccord souple (62) est interposé entre les plaques de matière isolante (42a) qui constituent la couche interne d'isolation (42) et adhère à celles-ci.
- Structure selon l'une des revendications 1 à 9, caractérisée en ce qu'une cornière métallique (52a) formant panneau de répartition (52) est interposée entre la barrière primaire (2) et la couche interne d'isolation (42), et est fixée à cette dernière.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9206136 | 1992-05-20 | ||
FR929206136A FR2691520B1 (fr) | 1992-05-20 | 1992-05-20 | Structure préfabriquée de formation de parois étanches et thermiquement isolantes pour enceinte de confinement d'un fluide à très basse température. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0573327A1 EP0573327A1 (fr) | 1993-12-08 |
EP0573327B1 true EP0573327B1 (fr) | 1999-01-27 |
Family
ID=9429982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93401304A Expired - Lifetime EP0573327B1 (fr) | 1992-05-20 | 1993-05-19 | Structure préfabriquée de formation de parois étanches et thermiquement isolantes pour enceinte de confinement d'un fluide à très basse température |
Country Status (12)
Country | Link |
---|---|
US (1) | US5501359A (fr) |
EP (1) | EP0573327B1 (fr) |
JP (1) | JP3788808B2 (fr) |
KR (1) | KR100258206B1 (fr) |
AU (1) | AU4076193A (fr) |
CA (1) | CA2113822A1 (fr) |
DE (1) | DE69323240D1 (fr) |
ES (1) | ES2127799T3 (fr) |
FI (1) | FI940259A (fr) |
FR (1) | FR2691520B1 (fr) |
PL (1) | PL302155A1 (fr) |
WO (1) | WO1993023699A1 (fr) |
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Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3367492A (en) * | 1964-09-03 | 1968-02-06 | Exxon Research Engineering Co | Insulation system |
US3341051A (en) * | 1964-12-24 | 1967-09-12 | Exxon Research Engineering Co | Cryogenic insulation system |
US4116150A (en) * | 1976-03-09 | 1978-09-26 | Mcdonnell Douglas Corporation | Cryogenic insulation system |
US4066184A (en) * | 1976-07-13 | 1978-01-03 | Conch L.N.G. | Thermal insulation systems |
FR2361601A1 (fr) * | 1976-08-10 | 1978-03-10 | Technigaz | Structure de paroi composite thermiquement isolante et procede de montage dans un reservoir de transport et/ou de stockage de gaz liquefies |
FR2386771A1 (fr) * | 1977-04-07 | 1978-11-03 | Technigaz | Paroi composite isolante thermiquement et etanche aux fluides, elements prefabriques pour la construction de celle-ci et procede de construction de ladite paroi |
GB1589385A (en) * | 1977-04-07 | 1981-05-13 | Technigaz | Thermally insulating fluid-tight composite wall prefabricated elements for constructing the same and method of constructing said wall |
US4117947A (en) * | 1977-08-01 | 1978-10-03 | Frigitemp Corporation | Internal insulation for liquefied gas tank |
US4335831A (en) * | 1978-01-16 | 1982-06-22 | Owens-Corning Fiberglas Corporation | Insulated cryogenic liquid container |
FR2599468B1 (fr) * | 1986-06-03 | 1988-08-05 | Technigaz | Structure de paroi thermiquement isolante de reservoir etanche |
-
1992
- 1992-05-20 FR FR929206136A patent/FR2691520B1/fr not_active Expired - Lifetime
-
1993
- 1993-05-19 KR KR1019940700174A patent/KR100258206B1/ko not_active IP Right Cessation
- 1993-05-19 EP EP93401304A patent/EP0573327B1/fr not_active Expired - Lifetime
- 1993-05-19 DE DE69323240T patent/DE69323240D1/de not_active Expired - Lifetime
- 1993-05-19 CA CA002113822A patent/CA2113822A1/fr not_active Abandoned
- 1993-05-19 US US08/185,820 patent/US5501359A/en not_active Expired - Lifetime
- 1993-05-19 PL PL93302155A patent/PL302155A1/xx unknown
- 1993-05-19 ES ES93401304T patent/ES2127799T3/es not_active Expired - Lifetime
- 1993-05-19 AU AU40761/93A patent/AU4076193A/en not_active Abandoned
- 1993-05-19 WO PCT/FR1993/000492 patent/WO1993023699A1/fr active Application Filing
- 1993-05-19 JP JP51995993A patent/JP3788808B2/ja not_active Expired - Lifetime
-
1994
- 1994-01-19 FI FI940259A patent/FI940259A/fi not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CA2113822A1 (fr) | 1993-11-25 |
KR100258206B1 (ko) | 2000-06-01 |
DE69323240D1 (de) | 1999-03-11 |
AU4076193A (en) | 1993-12-13 |
FR2691520A1 (fr) | 1993-11-26 |
WO1993023699A1 (fr) | 1993-11-25 |
JPH07500406A (ja) | 1995-01-12 |
PL302155A1 (en) | 1994-07-11 |
JP3788808B2 (ja) | 2006-06-21 |
EP0573327A1 (fr) | 1993-12-08 |
ES2127799T3 (es) | 1999-05-01 |
FR2691520B1 (fr) | 1994-09-02 |
US5501359A (en) | 1996-03-26 |
FI940259A0 (fi) | 1994-01-19 |
FI940259A (fi) | 1994-03-21 |
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