TW201427879A - Sealed and insulated tank including a pedestal - Google Patents

Abstract

A tank wall includes a sealing barrier (6) and a pedestal (10) for equipment immersed in the sealed tank. The sealing barrier includes a layer of corrugated sheet metal (11) including at least one series of parallel corrugations (15), the layer of corrugated sheet metal being interrupted by a window (25) around the pedestal. The pedestal extends longitudinally through the window. The sealing barrier includes connecting parts (45, 50) for joining the pedestal in sealed manner to a marginal portion of the layer of corrugated sheet metal delimiting the window. The window (25) interrupts the directrices of a plurality (20) of the parallel corrugations of the series and the pedestal is centred at a position situated between the directrices (A) of two parallel corrugations (20).

Description

Sealed insulation slot containing a base

The present invention relates to the field of a structure for sealing an insulating groove disposed in a support structure, and in particular, the present invention relates to a structure for receiving a wall of a groove of a susceptor.

Sealed insulation tanks are used in a variety of industries to store hot or cold products. For example, in the energy sector, liquefied natural gas (LNG) is a storage tank that can be stored on land or on a ship's floating structure at atmospheric pressure and at about -163 °C. These floating structures include methane tankers for transporting products and offshore units (especially known as FPSO and FSRU) for storing, liquefying or re-vaporizing the product.

In a film reservoir, a corrugated sheet metal layer is used to form a sealing barrier that also has sufficient resiliency to resist (eg, from static pressure, dynamic pressure) in the event of cargo movement and/or temperature changes. force. However, such a sealing barrier and the underlying insulating material are relatively fragile and do not necessarily support heavy equipment (e.g., a pump) to be immersed in the bottom of the tank.

In one embodiment, the present invention provides a sealed insulating groove disposed in a support structure, the groove including a groove wall disposed along the support structure, the groove wall comprising: a sealing barrier; an insulating barrier, the arrangement Between the sealing barrier and the support structure and having a support surface for the sealing barrier; and a susceptor for immersing in the sealing groove, the sealing barrier comprising a corrugated metal sheet having at least one series of parallel corrugations interrupted by a window surrounding the pedestal; a seat extending longitudinally through the window in the corrugated metal sheet layer and having a first end portion that abuts the support structure (eg, against a bottom portion of the support structure) and protrudes into the slot to be away from the metal sheet a layer at a distance to support a second end portion of the apparatus; the sealing barrier comprising a connecting portion disposed in a window surrounding the base to sealingly connect the base to a corrugated metal sheet defining the window a marginal portion of the layer; wherein the window interrupts a plurality of alignments of the at least one series of parallel corrugations and the base pair is placed at a position between the alignment lines of the plurality of parallel corrugations.

In other advantageous embodiments, such a slot may have one or more of the following features.

The base can have a variety of shapes depending on, among other things, the characteristics of the equipment to be supported. In one embodiment, the pedestal has at least one protruding lateral side and the alignment of the two corrugations (the pedestal is centered between the alignment lines of the two corrugations) and the bulge of the pedestal The lateral sides intersect. In an embodiment, the base has a circular cross section.

In one embodiment, the window interrupts an even number of the at least one series of parallel corrugations (eg, the at least one series of two parallel corrugations).

In one embodiment, the base is generally centered in the middle of the alignment of the two corrugations. Alternatively, the base can be offset from the center to be closer to one of the two corrugations, for example, if given the shape of the base, this position can reduce the length of the interruption of the corrugations.

In an embodiment, the at least one series of parallel corrugations are equidistantly distributed. Alternatively, the series of corrugations may have a less irregular distribution, at least partially having a less irregular distribution.

In one embodiment, the corrugations are from the sides of the inner surface of one of the sealing barriers that are intended to contact a fluid.

In one embodiment, the connecting portions include a plurality of end portions disposed at a distance from the base to close the interrupted ends of the two corrugations, the base pair being placed between the alignment lines of the two corrugations . By virtue of the end portions, all of the corrugations of the window interruption guide can be closed to reestablish the continuity of the sealing barrier.

In one embodiment, the base comprises: a full tubular hollow envelope, the longitudinal axis of the hollow envelope being substantially perpendicular to the groove wall; and a transverse closure wall closed in a sealed manner The envelope provides continuity of the sealing barrier at the level of the base. This hollow shape particularly preferably limits the effective cross-section of the susceptor that is easy to establish a thermal bridge.

The connecting portions intended to connect the base to the marginal portion of one of the corrugated metal sheets in a sealed manner may have many shapes.

In one embodiment, the connecting portions comprise an annular plate joined to a peripheral wall of the base at a level of the corrugated metal sheet. This plate can be pre-assembled to the base.

In one embodiment, the connecting portions include an intermediate plate having a first edge fused to the annular plate and a second edge fused to a marginal portion of the corrugated metal sheet defining the window.

For example, for reasons of reliability and safety, the tank may have a single sealing barrier or a continuous multiple sealing barrier. In a corresponding embodiment, the thermal barrier comprises a primary thermal barrier (referred to as a primary sealing barrier) disposed on a side of the sealing barrier and a primary thermal barrier disposed on a side of the support. The channel wall includes a primary seal barrier disposed between the primary insulation barrier and the secondary insulation barrier, the secondary barrier barrier being sealingly coupled to a peripheral wall of the base.

In an embodiment, the connecting portions comprise: a connecting plate having a parallel arrangement parallel to the at least one series of parallel corrugations a line on the straight line, the line being laterally offset from the base by one distance relative to one of the corrugation lines interrupted by the window; and a curved portion, each of the curved portions being arranged to connect the line One end of the corrugation of the plate is joined to one end portion of the corrugation, the corrugation line is interrupted by the window, such that the corrugation of the connecting plate and the two curved portions extend the corrugation, and the guiding line of the corrugation is via the window A straight line offset laterally from the base is interrupted in a sealed manner. Manufacturing one or more offset corrugations in this manner can limit the number of discontinuous corrugations exhibited by the pedestal and thereby better maintain the elasticity of the sealing barrier, especially if a pedestal of relatively large diameter must be mated Time.

The measures and features described above with respect to a series of parallel corrugations may, if desired, be applied to a plurality of series of parallel corrugations having different directions. In a corresponding embodiment, the corrugated metal sheet layer has a first series of parallel corrugations and a second series of parallel corrugations intersecting the first series of parallel corrugations at the intersection, the window interrupting a first plurality of a first series of parallel corrugation lines and/or a second plurality of second series of parallel corrugation lines, the base pair being disposed between the alignment lines of the first plurality of parallel corrugations and / or a position between the alignment lines of the second plurality of parallel corrugations.

In a preferred embodiment, the first series of parallel corrugations are perpendicular to the second series of parallel corrugations. Therefore, the elasticity of the sealing film in different directions can be balanced.

The windows mentioned above may, in particular, have various shapes depending on the shape of the base and/or the shape of the components of the corrugated metal sheet. In one embodiment, the window has a quadrilateral (eg, a rectangle, square, or parallelogram) parallel to the sides of the first series of corrugations and parallel to the sides of the second series of corrugations.

In an embodiment, the base is disposed at a base for discharging a rod of the slot, for example, to support a pump.

One of the basic concepts of the present invention is to support the apparatus to be immersed in a tank on a susceptor that is directly or indirectly carried on the support structure to prevent or limit application to a relatively fragile corrugated sealing film. force. Another basic idea of the present invention is that it does not damage A method of providing the basic mechanical properties of the corrugated sealing film, particularly its sealing effect and its resistance to heat shrinkage or pressure, is provided. Some aspects of the invention begin with interrupting the corrugation of a corrugated sealing film in a region through which a pedestal passes and positioning the pedestal to limit the length of such interruptions to limit the elasticity of the film that can be caused by such interruptions The idea of losing one position. Other aspects of the invention begin with the concept of locally displacing the corrugations to bypass the area through which the pedestal passes without interrupting the corrugations.

The invention will be better understood and other objects, details, details of the invention, in the course of the description of the preferred embodiments of the invention, Features and benefits will become clearer and more visible.

1‧‧‧ Sealed insulation tank

2‧‧‧ slot wall

3‧‧‧ slot wall

4‧‧‧ wall

5‧‧‧ wall

6‧‧‧ Sealing barrier

7‧‧‧ Thermal barrier

9‧‧‧ Equipment

10‧‧‧ Pedestal

11‧‧‧ Sealing plate

12‧‧‧ marginal overlap area

13‧‧‧Cut truncated cone area

14‧‧‧Cylindrical part

15‧‧‧First series of ripples

16‧‧‧Second Series Ripple

17‧‧‧Minimum diameter end

19‧‧‧ Horizontal closed wall

20‧‧‧ ripple

21‧‧‧ interrupt ripple

22‧‧‧Secondary thermal barrier

23‧‧‧Secondary board

24‧‧‧Primary panel

25‧‧‧ window

26‧‧‧ Thermal barrier

27‧‧‧ Glass wool filler

28‧‧‧Filling

30‧‧‧ gusset

31‧‧‧ Lower Block

32‧‧‧ Sealed flexible coating

33‧‧‧Upper block

34‧‧‧Slit

35‧‧‧film

36‧‧‧Articles

37‧‧‧End area

38‧‧‧Articles

40‧‧‧ corner block

41‧‧‧Intermediate block

43‧‧‧ steps

44‧‧‧ notch

45‧‧‧Closed board

46‧‧‧ inner edge

47‧‧‧ outer edge

48‧‧‧Area

49‧‧‧ Wood screws or rivets

50‧‧‧End pieces

51‧‧‧One part of the end piece 50

52‧‧‧One of the end pieces 50

53‧‧‧ steps

54‧‧‧Shell

55‧‧‧ interval

106‧‧‧ Sealing barrier

110‧‧‧Base

111‧‧‧ board

112‧‧‧ Sealing plate

115‧‧‧ ripple

120‧‧‧ ripple

145‧‧‧Intermediate board

150‧‧‧End pieces

155‧‧‧ interval

158‧‧‧ ripple

159‧‧‧ ripple

160‧‧‧ window

161‧‧‧Connecting plate

162‧‧‧Central section

163‧‧‧Central section

170‧‧‧Bend section

171‧‧‧One part of the curved part 170

172‧‧‧One part of the curved part 170

173‧‧‧ steps

174‧‧‧Bending ripples

1 is a partial cross-sectional view showing one of the sealed insulating grooves in one embodiment of the present invention, and FIG. 2 is a line which can be used in the groove of FIG. 1 and a groove wall structure along line II in FIG. A cross-sectional perspective view taken in FIG. 2, FIG. 3 is a top view of a base of FIG. 2 and an area surrounding a groove wall of the base, and FIG. 4 is an intermediate stage similar to FIG. 2 in which one of the groove walls is assembled. Icon

Figure 5 is a detailed view of a larger scale of one of the regions V in Figure 4, Figure 6 is a top view of the groove wall region of Figure 4 showing the manufacture of the secondary sealing barrier, and Figure 7 is a view showing the assembly of the primary sealing barrier One intermediate stage is similar to the one of FIG. 6, which is a perspective view of an end portion that can be used in the manufacture of the primary sealing barrier, and FIG. 9 is a representation of another embodiment of the present invention. The primary sealing barrier of the pedestal is similar to that of FIG. 3, which is a perspective view of one of the curved portions that can be used in the fabrication of the primary sealing barrier of FIG.

Figure 1 shows a portion of a sealed insulation tank 1 which is comprised of channel walls 2 and 3 secured to the inner surfaces of corresponding walls 4 and 5 of a support structure. The support structure is, for example, constructed within the hull of a double hull vessel or on one of the land. In order to contain a cold liquid (such as LNG), the walls of the tank comprise at least one sealing barrier 6 and at least one insulating barrier 7. As a safety measure, a primary sealing barrier (not shown) may be provided between the support structure and the sealing barrier 6, in which case the sealing barrier 6 may be referred to as a primary sealing barrier.

The trough 1 can be made in a variety of familiar geometries (e.g., one of the prismatic geometries in a ship's hull or one of the cylindrical geometries on the ground, etc.). Again, many methods can be used to make the insulating seal barrier (eg, made from prefabricated components).

A rigid elongate member is shown in the bottom wall 3 of the trough, the member forming a base 10 extending through the insulating barrier 7 and the sealing barrier 6 such that one end thereof bears against the bottom wall 5 of the support structure and One end protrudes into the groove and is spaced apart from the sealing barrier 6 by a certain distance. The base 10 can, for example, support the device 9 to be immersed in the trough. To support a drain pump, for example, it can be placed at the base of one of the pumping rods of the tank (not shown). Although the base shown here is located on the bottom wall of one of the slots, a similar rigid member can be placed in the same manner at other locations of the slot (for example) as a support or spacer element to hold an object in place. The groove wall is at a distance.

To make the sealing barrier 6, a thin sheet of metal having corrugated features can be used which form an elastic region for absorbing heat shrinkage and static and dynamic pressure. This sealing corrugated or wafer-like metal sheet barrier is specifically described in FR-A-1379651, FR-A-1376525, FR-A-2781557, and FR-A-2861060. This possibility is described in more detail below with reference to Figures 2 and 3.

Referring to Figure 3, the sealing barrier 6 is comprised of a plurality of corrugated sealing plates 11, the inner surfaces of which are intended to be in contact with the fluid. The sealing plate 11 is a thin metal (for example, stainless steel or aluminum) member and is welded together in the marginal overlap region 12. For example, the weld is an overlap weld type manufactured by the method described in detail in the patent FR-A-1387955. Sealing plate 11 can Various designs are made depending on the shape and size thereof, and thus the welded regions can be variously positioned.

The sealing plate 11 has, on its inner surface, a first series of corrugations, referred to as longitudinal corrugations 15, and a second series of corrugations, referred to as transverse corrugations 16, which are oriented perpendicular to each other. The first series of corrugations 15 have a lower height than the second series of corrugations 16. Thus, the corrugations 15 are discontinuous, with the corrugations 15 spanning the corrugations 16 at 18, while the corrugations 16 are continuous. The longitudinal corrugations 15 and the transverse corrugations 16 project toward the inside of the trough 1.

Here, the base 10 has a circular cross section and one of the truncated frustum lower portions 13 is joined to a cylindrical upper portion 14 at its smallest diameter end 17. The largest diameter base of the truncated frustum portion 13 bears against the wall 5 of the support structure. The truncated frustum portion 13 extends through the thickness of the groove wall beyond the level of the sealing barrier 6. The cylindrical portion 14 is closed in a sealed manner by a circular plate 19 which may, for example, be welded to an inner edge (not shown) of the cylindrical portion 14.

The corrugated sealing plate 11 forming the sealing barrier 6 is cut in such a manner as to define a square window 25 around the base 10 to provide a passage for the base 10. A seal assembly of one of the connection portions is made between the base 10 and the seal plate 11 to establish the continuity of the seal barrier 6 at the level at the window 25. Since the diameter of the base 10 is greater than the spacing between the first series of corrugations 15, some of the longitudinal corrugations indicated at 20 and the alignment A intersecting the base 10 are interrupted by the window 25. Similarly, since the diameter of the base 10 is greater than the spacing between the corrugations 16 of the second series, some of the lateral corrugations indicated at 21 and the alignment B intersecting the base 10 are interrupted by a window surrounding the base.

Furthermore, as can be seen in Figure 3, the window 25 is substantially larger than the diameter of the base 10 so that the connecting portions can be fitted relatively easily. Accordingly, if the window 25 is formed in the corrugated metal sheet layer, the window 25 may be interrupted in the same manner, and the line of the corrugation may be very close to the base without actually intersecting the base. Implementation places the connecting portion between the window and the base.

The center C of the susceptor 10 is positioned between the alignment line A of the interrupted corrugations 20 and the alignment line B of the interrupted corrugations 21 and more precisely in the middle of such alignment lines in FIG. Due to this positioning, each of the alignment lines A or B intersects the base 10 along a chord that is shorter than the diameter of the base 10. Since this must exist between the edge of the window 25 and the base 10 to allow for the given space of the connecting portions, the positioning of the base can interrupt each of the corrugations 20 and 21 at a certain distance. The distance is shorter than the distance in which the alignment line A or B intersects the pedestal along its maximum transverse dimension (i.e., its diameter in the case of a circular cross section). It is advantageous to interrupt the corrugations of the sealing barrier by the shortest possible distance, in view of the fact that such interruptions tend to reduce the local flexibility of the sealing barrier and thereby promote its local fatigue and wear.

In the case of a circular section, centering the substrate between the interrupted corrugations 20 and the intermediate portion between the interrupted corrugations 21 provides an optimum result. However, other segment shapes and other locations of the pedestal may also be considered. In one instance, a principle for adapting the positioning of the susceptor between the corrugations can be selected to minimize or at least reduce a position of the lateral dimension of the pedestal that intersects the alignment of the interrupted corrugations. If the particular geometry of the pedestal and/or the particular distribution of corrugations of the film comprises interrupting different lengths of the plurality of corrugations, a suitable optimization parameter for adapting the position of the substrate may be the length of the longest interruption or The cumulative length of the interrupt.

In Fig. 3, the window 25 has a square shape that facilitates cutting the sealing plate 11 into a desired shape. However, other window shapes can also be used, especially depending on the geometry of the base.

One embodiment of a groove wall in the region of the base 10 is described in detail below with reference to FIGS. 4-8. This embodiment is particularly suitable for a slot having walls comprising two sealing barriers and two insulating barriers. Therefore, the barrier rib 6 is referred to as a primary sealing barrier. Only the proximity of the susceptor 10 is described herein, and the walls of the sump can be made in accordance with the teachings of the application FR-A-2781557.

Figure 4 is a half-sectional view of a section of the base 10 in an intermediate assembly stage and a substantially square area of one of the groove walls surrounding the base. The right hand part indicates that the secondary key is placed The front and left hand portions of the barrier wall and the elements of the primary insulation barrier are shown after placement of the components.

In order to connect the base 10 to the secondary sealing barrier, the base 10 includes a square secondary plate 23 that is associated with a height corresponding to the secondary insulating barrier 22 and the upper surface of the insulating sealing barrier. It is fixed around the truncated frustum portion 13, which is extremely thin. In order to connect the base 10 to the primary sealing barrier, the base 10 includes a circular primary plate 24 that surrounds the truncated frustum portion 13 at a height corresponding to the upper surface of the primary thermal barrier 26. fixed. The plates 23 and 24 can be made in one piece with the base 10.

Below the secondary plate 23, the secondary insulating barrier 22 comprises a glass wool filler 27 which also has a square outer profile. Below the primary plate 24, the primary insulating barrier 26 includes a glass wool filler 28 that also has a circular outer contour.

The secondary insulating barrier surrounding the packing 27, the secondary sealing barrier and the primary insulating barrier and the panel 23 are formed by four gussets, one of which can be seen in the right hand portion of Figure 4. . The plate 30 has a stepped L-shaped overall shape and has: an L-shaped lower insulating block 31 which constitutes one element of the secondary insulating barrier 22, and a sealed flexible coating 32 completely covers the block 31. An L-shaped upper surface; and a smaller L-shaped upper insulating block 33, which constitutes an element of a primary insulating barrier 26. The upper block 33 is aligned with the outer side of the lower block 31 such that one of the areas of the seal coating on the end edge of the bottom block 31 on an inner edge is uncovered. The panel 30 can be prefabricated from an adhesive material similar to that taught in the application FR-A-2781557, in particular for the polyurethane barrier materials and laminates of the insulating barriers and for the secondary One of the sealing barriers is an aluminum foil/glass fiber composite.

The inner sides of the four gussets 30 are located on the sides of the contours of the filler 27 and the panel 23. The size of the block 31 is such that it forms a dimension in the form of four radial slits 34 between the four radial slits 34, each of which is located at the end face of the two adjacent lower blocks 31. between. In order to ensure continuity of the primary insulating barrier 22, each of the slits 34 is packed with a fiberglass film 35. The porosity of the glass fibers of film 35 and filler 27 allow gas to circulate through primary insulating barrier 22, particularly for the passivation of the walls using nitrogen.

Figure 6 shows the manufacture of the secondary sealing barrier in the region of the base 10 as seen above. To create continuity of the secondary sealing barrier around the susceptor 10, four strips of sealed aluminum foil and fiberglass composite are adhered to the secondary coating 27 and the sealing coating 32 of the panel 30. Each strip 36 is positioned to overlap one of the sides of the secondary panel 27 and the uncovered inner edge of the two lower blocks 31. The strip 36 overlaps the end region 37. In order to fabricate the continuity of the secondary sealing barrier over the slits 35, the four strips 38 of the sealing aluminum film and the fiberglass composite are adhered to the sealing coating 32 of the panel 30 to overlap the edges each time. At the edge of the two lower blocks 31.

Figure 7 shows the same area of the wall after mating the primary insulating barrier. The primary insulating barrier is completed between the upper insulating block 33 and the susceptor 10 by four corner blocks 40 and four intermediate blocks 41, and the inner side of each of the primary insulating barriers surrounds the primary The circular contour of the plate 24 and the packing 28. These blocks 40 and 41 are also shown in the left hand portion of FIG.

As seen in the detailed view as seen in FIG. 5, the upper surface of each of the intermediate blocks 41 has a notch 44 defined by a first step 43. The notch 44 is precisely at the level of the primary plate 24 to provide a planar support surface for the metal closure panel 45 to provide the primary sealing barrier surrounding the base 10.

As can be seen in Figure 7, the two closure panels 45 are arranged around the primary panel 24 and are welded to the primary panel 24 in a sealed manner around its entire perimeter. For this purpose, the inner edge 46 of the plate 45 is cut into a semi-circular shape while its outer edge 47 defines a square in the corrugated sealing plate 11 that is slightly larger than the window 25. The two closure panels 45 are overlapped in a region 48 where they are welded together. The closure panel 45 is secured to the block 40 and the block 41 of the primary insulation barrier by wood screws or rivets 49 that are disposed in adjacent regions of the outer edge 47 of the closure panel 45 to securely Pressing the closure panel 45 against the blocks, especially because when the closure panel is to be closed 45 must be prevented from being lifted when it is welded to the primary plate 24.

Referring again to Figures 2 and 3, it can be seen that the primary sealing barrier 6 in the region of the substrate 10 is fused on the one hand to the closure panel 45 by the edge of the sealing panel 11 defining the window 25, and on the other hand by utilizing the end piece 50 This is accomplished by closing the ends of the interrupted corrugations 20 and 21 in a sealed manner. The sealing plate 11 is cut to overlap the boundary of the closing plate 45 containing the screws 49.

FIG. 8 shows an embodiment of an end piece 50. The end piece 50 includes a base plate and a casing 54 intended to be welded to the end of the corrugation 20 or 21 in a sealed manner in the two portions 51 and 52 which are intended to be welded to the closure plate 45 and the sealing plate 11, respectively. A step 53 between the portions 51 and 52 of the base plate has an amplitude substantially the same as the thickness of the sealing plate 11.

The manner in which the insulating blocks and other prefabricated components shown in Figures 2, 4, 6, and 7 are cut to form the secondary insulating barrier, the secondary sealing barrier, and the primary insulating barrier are purely illustrative. The similar components can be cut and other shapes prefabricated such that the groove wall assembly contains a larger or smaller number of components. In other embodiments, the four L-shaped gussets 30 are replaced by two U-shaped panels or a single panel having the shape of a square frame.

As best seen in Figure 3, the panel considered above requires a window that is approximately twice the size of the gap 55 between the two corrugations 15 or 16, the spacing between the corrugations being equidistant therefrom. For this purpose, the two corrugations of each series are interrupted. However, this configuration of the base in the base and its adjacent areas is adapted to other base sizes. For example, the corresponding window can interrupt a larger number of corrugations (eg, three or four corrugations or more corrugations) in one or a series of series to obtain a wider pedestal. In addition, some of the corrugations may be partially rearranged to limit the number of corrugations that are interrupted and thereby maintain a higher level of elasticity of the sealing film. The embodiment of Figure 9 illustrates this possibility.

In FIG. 9, components identical or similar to those of FIG. 3 carry the same reference numerals that have been incremented by 100. The lateral dimension of the pedestal 110 is greater, for example, greater than or equal to about three times the spacing 155 between the corrugations 115 or 116, in which case the corrugated metal film is formed for the pedestal 110 to pass through. Window 125 interrupts the four ripples in each series Guidelines. However, instead of interrupting the four corrugations of each series, this embodiment interrupts the two corrugations 120, 121 of each series as in the previous embodiment, while the other two corrugations 158, 159 of each series are respectively relative to their initial alignment. The pedestal 110 is partially offset but not interrupted.

For this purpose, the sealing barrier 106 is modified at the level of the two concentric square windows 125 and 160. Outside the window 160, the sealing barrier 106 is comprised of a sealing plate 111 carrying longitudinally spaced longitudinal corrugations 115 and transverse corrugations 116. Between the window 160 and the window 125, the sealing barrier 106 is continuous with the other corrugated sealing plates (ie, the two full C-shaped plates 161 herein), which are distributed differently (ie, here) Ripple that is less isolated.

The corrugations of the plates 161 in particular constitute a central section 162, 163 which is offset from the base 110 for each of the corrugations 158, 159, respectively. Finally, the structure of the sealing barrier 106 at the level of the window 125 and inside the window 125 is similar to the embodiment of FIG.

The curved portion 170 is used to make a junction at the window 160 between the central section 162 or 163 of the corrugation 158 or 159 and the portion of the corrugation that is external to the window 160.

FIG. 10 shows an embodiment of a curved portion 170. The curved portion 170 includes: a base plate that is intended to be welded in a sealed manner to the respective plates 111 or 161 of the sealing barrier 106 and to the two portions 171 and 172 of the adjacent curved portion 170; and a curved corrugation 174, the curved corrugation The alignment of 174 forms a selected angle (eg, 135°). The curved corrugations 174 are intended to be connected in a sealed manner to the abutting ends of the corrugations 158 or 159 and to the curved corrugations of the adjacent curved portions. A step 173 between the portions 171 and 172 of the base plate has an extent substantially equal to the thickness of the metal sheet and the sealing plate 111 or 161 or the curved portion 170 is made of the metal sheet. Metal sheets of the same thickness are preferably used for these parts.

In another embodiment (not shown) suitable for a smaller diameter pedestal, for example, all of the corrugations of the alignment line interrupted by the window (e.g., two corrugations of the series as in Figure 3) are similar One of the corrugations 158 and 159 in Figure 9 is offset from the window and extends across the window. in In this embodiment, the flexibility of the film can be improved since one of the end members at the level of the pedestal does not interrupt any of the corrugations.

In the embodiments described above, the primary sealing barrier is formed in a sheet of metal comprising two series of mutually perpendicular corrugations. However, other types of corrugated metal films can be used in a similar manner and have fewer or more corrugations and/or a different corrugation configuration.

While the invention has been described with respect to the specific embodiments of the present invention, it is to be understood that the invention is not limited to the embodiments and includes all technical equivalents of the components described in the scope of the invention and combinations thereof .

The use of a verb to include or include a form of its morphological change does not exclude the presence of other elements or other steps other than those recited in the claim. The use of the indefinite article "a" or "an" A plurality of components or modules may be represented by the same hardware component.

In the request item, any related symbols in parentheses should not be interpreted as limiting the request.

6‧‧‧ Sealing barrier

10‧‧‧ Pedestal

11‧‧‧Corrugated metal sheet

12‧‧‧ marginal overlap area

13‧‧‧Cut-top frustum section

14‧‧‧Cylindrical part

15‧‧‧First series of ripples

16‧‧‧Second Series Ripple

20‧‧‧ interrupt ripple

21‧‧‧ interrupt ripple

25‧‧‧ window

45‧‧‧Closed panel

46‧‧‧ inner edge

48‧‧‧Area

50‧‧‧Connected section

55‧‧‧ gap

Claims (18)

A sealed insulating groove disposed in a support structure, the groove comprising a groove wall (3) disposed along the support structure (4), the groove wall comprising: a sealing barrier (6, 106); an insulating barrier (7) , 22, 26) disposed between the sealing barrier and the support structure and having a support surface for the sealing barrier; and a base (10, 110) for immersing the sealing groove, The sealing barrier comprises a corrugated metal sheet (11, 111) having at least one series of parallel corrugations (15; 115) interrupted by a window (25, 125) surrounding one of the bases; The seat extends longitudinally through the window in the corrugated metal sheet layer and has a first end portion that bears against the support structure, and a second end that protrudes into the slot to support the device at a distance from the metal sheet layer a sealing barrier comprising a connecting portion (24, 45, 50) disposed in the window surrounding the base to sealingly join the base to a marginal portion of the corrugated metal sheet defining the window Where the window (25, 125) interrupts the plurality of the at least one series Parallel corrugations (20,120,158) and the alignment of the base pair is located at a position disposed between two of the plurality of parallel corrugations (20, 120) of such alignment (A). The slot of claim 1, wherein the base has at least one convex lateral side edge (13), the base pair being disposed between the alignment lines of the two corrugations (20, 120), the two The alignment of the corrugations (20, 120) intersects the convex lateral sides of the pedestal. A slot as claimed in claim 1 or 2, wherein the window interrupts the alignment (A) of the at least one series of even parallel lines. The slot of claim 3, wherein the window interrupts the at least one series of two parallel ripples The criteria. A trough according to any one of claims 1 to 4, wherein the base is substantially centered in the middle of the alignment of the two corrugations. A tank according to any one of claims 1 to 5, wherein the base has a circular cross section. A trough according to any one of claims 1 to 6, wherein the at least one series of parallel corrugations (15, 115) are equidistantly distributed. A trough according to any one of claims 1 to 7, wherein the corrugations (15, 115) protrude from the side of the inner surface of one of the sealing barriers intended to be in contact with a fluid. A trough according to any one of claims 1 to 8, wherein the connecting portions comprise a plurality of end portions (50, 150) arranged at a distance from the base, which close the base in this manner The pair of interrupted ends of the two corrugations (20, 120) placed between them. A trough according to any one of claims 1 to 9, wherein the base comprises a generally tubular hollow casing (13, 14) having a longitudinal axis generally perpendicular to the trough wall and a transversely closed wall (19) The envelope is closed in a sealed manner to create continuity of the sealing barrier at the level of the base. A tank according to any one of claims 1 to 10, wherein the connecting portion comprises an annular plate (24) attached to the level of the corrugated metal sheet (11, 111) layer. One of the perimeter walls of the base. The slot of any one of claims 1 to 11, wherein the connecting portion comprises an intermediate plate (45, 145) having a first edge welded to the annular plate and fused to the corrugation defining the window a second edge of the margin portion of the metal sheet layer (11, 161). The tank of any one of claims 1 to 12, wherein the insulating barrier comprises a primary insulating barrier (26), referred to as a primary sealing barrier, disposed on a side of the sealing barrier (6) and disposed on the support Primary insulation barrier (22) on the side of the structure, the wall of the trench And a primary sealing barrier (23, 32, 36, 38) disposed between the primary thermal barrier and the secondary thermal barrier, the secondary sealing barrier being sealingly coupled to a peripheral wall of the base (13) ). The groove of any one of claims 1 to 13, wherein the connecting portion comprises: a connecting plate (161) having a corrugation parallel to the at least one series of parallel corrugations (115) and arranged on a straight line ( 162) the straight line is laterally offset from the base with respect to one of the alignment lines interrupted by the window; and a curved portion (170) that bends the connecting plate with each curved portion One of the ends is joined to one end portion of the corrugation (158) in such a manner that the alignment of the curved portion is interrupted by the window such that the corrugations (162) of the web and the two curved portions extend the corrugation ( 158), the alignment of the corrugations is interrupted in a sealed manner across the window along a line that is laterally offset from the base (110). The groove of any one of claims 1 to 14, wherein the corrugated metal sheet layer comprises a first series of parallel corrugations (15, 115) and a second series of parallel corrugations intersecting the first series of parallel corrugations at the intersection (16, 116), the window interrupts a first plurality of alignment lines of the first series of parallel corrugations and/or a second plurality of alignment lines of the second series of parallel corrugations, the pedestal is centered a position between the alignment lines (A) of the first plurality of parallel corrugations and/or between the alignment lines (B) of the second plurality of parallel corrugations. The slot of claim 15, wherein the first series of parallel corrugations is perpendicular to the second series of parallel corrugations. The slot of claim 15 or 16, wherein the window (25, 125) has a quadrilateral parallel to both sides of the first series of corrugations and parallel to the sides of the second series of corrugations. A tank according to any one of claims 1 to 17, wherein the base (10, 110) is arranged at a base for discharging one of the rods of the tank.