KR101512963B1 - Sealed and insulating vessel comprising a support foot - Google Patents

Abstract

The tank wall comprises a sealing barrier (6) and a support pedestal (10) for the equipment article immersed in a sealing tank. The sealing barrier comprises a corrugated metal sheet layer (11) having one or more rows of expandable corrugations (15), wherein the corrugated metal sheet layer is interrupted at the window (25) surrounding the support pedestal. The supporting pedestal extends longitudinally through the window. The sealing barrier includes connecting portions (45, 50) for sealingly connecting the support pedestal to the marginal portion of the corrugated metal sheet layer defining the window. The window 25 stops the dashes of a plurality of rows of parallel wrinkles 20 of the parallel wrinkles of the one or more rows and the support pedestal is positioned between the dashed lines A of the two parallel wrinkles 20 As shown in FIG.

Description

≪ Desc / Clms Page number 1 > SEALED AND INSULATING VESSEL COMPRISING A SUPPORT FOOT,

Field of the Invention The present invention relates to the field of manufacturing seals and adiabatic tanks disposed within a support structure, and more particularly to the manufacture of walls of such tanks that must receive a pedestal.

Sealed and insulated tanks are used in a variety of industries to store hot or cold items. For example, in the energy field, liquefied natural gas (LNG) is a liquid that can be stored in a storage tank on a land or plate floating structure at an atmospheric pressure of about-163 ° C. Such floating structures include coastal facilities known as FPSO and FSRU, in particular for storing, liquefying, or regasifying methane tankers and goods for transporting products.

In the membrane reservoir, a pleated sheet metal layer is used to produce a sealing barrier, which is also resistant to forces resulting from, for example, hydrostatic pressure, dynamic pressure in the case of cargo conveyance, and / or temperature changes It has sufficient elasticity. However, such sealing barriers and the underlying insulating material are not susceptible to supporting heavy equipment, e.g., pumps, that are relatively susceptible to damage and are immersed in the bottom of the tank.

In one embodiment, the present invention provides a seal and adiabatic tank disposed in a support structure, the tank comprising a tank wall disposed along a support structure, the tank wall comprising:

Sealing barriers,

An insulating barrier disposed between the sealing barrier and the support structure and having a support surface for the seal barrier, and

And a device holder immersed in the sealed tank,

Wherein the sealing barrier comprises a corrugated sheet metal layer having at least one series of parallel corrugations, the corrugated sheet metal layer being interrupted by a window around the pedestal,

The pedestal includes a first end extending longitudinally through the window in the pleated sheet metal layer and abutting against the support structure, for example, abutting against the bottom region of the support structure, Having a second end protruding into the tank to support the equipment,

Wherein the sealing barrier comprises a connection portion disposed in a window about the pedestal to connect the pedestal in a sealing manner to an edge of the pleated sheet metal layer delimiting the window,

The window interrupting a directrix of a plurality of parallel pleats in one or more rows of parallel pleats, the pedestal having a center at a location located between the delineations of the two parallel pleats of the plurality of parallel pleats, It is tailored.

In another useful embodiment, this kind of tank has one or more of the following features.

The pedestal can have a variety of shapes, especially depending on the characteristics of the equipment to be supported. In one embodiment, the pedestal has at least one laterial side, and the convex side of the pedestal intersects the dashes of the two wrinkles in which the pedestal is centered. In one embodiment, the pedestal has a circular cross-section.

In one embodiment, the window stops the dashes of even, e.g., two, parallel wrinkles among the parallel wrinkles in the one or more rows.

In one embodiment, the pedestal is substantially centered between the dorsal lines of the two pleats. Alternatively, for example, if such a position makes it possible to reduce the length of the interruption of the corrugation given to the shape of the pedestal, the pedestal can be offset from the middle to be closer to one corrugation than the other corrugation have.

In one embodiment, the parallel pleats of the one or more rows are distributed at equal distances. Alternatively, the corrugations of the one or more rows may have at least a locally less regular distribution.

In one embodiment, the pleats protrude from the side of the inner surface of the sealing barrier intended to contact the fluid.

In one embodiment, the connecting portion includes a plurality of end portions spaced apart from the pedestal to close the intermediate end of the two wrinkles centered on the pedestal between the dorsal lines of the two wrinkles, do. With such an end portion, all of the corrugations having sub-lines that the window is to be closed can be closed to reestablish the continuity of the sealing barriers.

In one embodiment, the pedestal comprises a hollow envelope having a generally tubular shape, the longitudinal axis of which is substantially perpendicular to the tank wall, and a closed envelope in a sealing manner to provide continuity of the sealing barrier at the height of the pedestal And a transverse closing wall. Such a hollow shape is particularly preferred to limit the effective cross-section of the pedestal, which is prone to generate thermal bridges.

The connection portion intended for sealingly connecting the pedestal to the marginal portion of the pleated sheet metal layer may have a plurality of shapes.

In one embodiment, the connecting portion includes an annular plate connected from the height of the pleated sheet metal layer to the peripheral wall of the pedestal. Such a plate can be pre-assembled into a pedestal.

In one embodiment, the connecting portion includes an intermediate plate having a first edge welded to the annular plate and a second edge welded to the edge of the pleated sheet metal layer defining the window.

Such tanks may have a single sealing barrier or a continuous multiple sealing barrier, for reasons of reliability and safety, for example. In one corresponding embodiment, the insulating barrier comprises a main insulating barrier disposed on a side of the sealing barrier, referred to as the main sealing barrier, and an auxiliary insulating barrier disposed on the side of the supporting structure, An auxiliary sealing barrier disposed between the main insulating barrier and the auxiliary insulating barrier, the auxiliary sealing barrier being connected in a sealed manner to a peripheral wall of the pedestal.

In one embodiment, the connecting portion comprises:

Wherein the connecting plate comprises a plurality of rows of folds disposed on lines laterally offset from the pedestal relative to one of the fold lines, parallel to the parallel folds of the one or more rows, And the bend portions and the two bend portions of the connecting plate are respectively disposed to connect the end portions of the wrinkles of the connecting plate and the connecting plate to the end portions of the bellows of the wrinkle portion interrupted by the window, Which has a dashed line that is sealingly closed by the window along the offset line. The formation of one or more offset wrinkles in this manner limits the number of wrinkles that provide discontinuity by the pedestal and thus maintains the elasticity of the improved sealing barriers especially when relatively large diameter pedestals are to be assembled do.

The arrangement and features described above with respect to the parallel wrinkles of one row can be applied to a plurality of parallel wrinkles of a plurality of rows having different directions if desired. In a corresponding one embodiment, the pleated sheet metal layer has a first row of parallel pleats and a second row of parallel pleats intersecting the first row of parallel pleats at the intersection, The first and second rows of parallel folds and / or the second plurality of parallel rows of parallel folds of the first row of folds, and / or between the dashes of the two parallel folds of the first plurality of folds and / 2 is centered at a position located between the dorsal lines of two parallel wrinkles out of the plurality of wrinkles.

In one preferred embodiment, the first row of parallel pleats is perpendicular to the second row of parallel pleats. Thus, the elasticity of the sealed membrane in different directions can be balanced.

The window described above may have various shapes depending on the shape of the pedestal and / or the shape of the components of the pleated sheet metal layer. In one embodiment, the window is a quadrilateral, e.g., rectangular, square, or parallelogram having two sides parallel to the corrugations of the first row and two sides parallel to the corrugations of the second row.

In one embodiment, the pedestal is placed in the base of the mast to discharge the tank, e.g., to discharge the tank to support the pump.

One basic concept of the present invention is to support the equipment to be immersed in a tank on a pedestal that directly or indirectly supports on the support structure to prevent or limit the force applied on the relatively frangible pleated sealing membrane . Another basic concept of the present invention is to provide such a pedestal in a manner that does not compromise the essential mechanical properties of the pleated sealing membrane, especially the sealing effect and resistance to heat shrinkage or pressure. Some aspects of the invention start with the concept of stopping the corrugation of the corrugated sealing membrane within the area defined below, which area is used to limit the loss of elasticity of the membrane through which the pedestal passes and which may result from such disruption. It is the area that positions these pedestals in a position that enables to limit the length of the breaks. Another aspect of the invention starts with the concept of locally displacing the pleats to bypass the area through which the pedesture passes without interruption of the pleats.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be better understood from the following description of a specific embodiment of the invention, given by way of example only, and not limitation, with reference to the accompanying drawings, , Features and advantages will become more apparent.

1 is a partial cross-sectional view of a seal and adiabatic tank of an embodiment of the present invention,
Figure 2 is a partially sectioned perspective view taken along line II-II in Figure 3 of a pedestal and tank wall structure that can be used in the tank of Figure 1,
Figure 3 is a top view of Figure 2 showing the area of the tank wall around the pedestal,
Figure 4 is a view similar to Figure 2 in an intermediate stage of assembling tank walls,
5 is a detailed view showing the area V of FIG. 4 at a large ratio,
Figure 6 is a plan view of the tank wall area of Figure 4 showing the manufacturing state of the auxiliary sealing barriers,
Figure 7 is a view similar to Figure 6 showing an intermediate step of assembling the primary sealing barrier,
Figure 8 is a perspective view of an end piece that may be used in the manufacture of the primary sealing barrier,
Figure 9 is a view similar to Figure 3 showing the primary sealing barrier around the pedestal in another embodiment of the present invention,
Figure 10 is a perspective view of the bend portion which can be used in the production of the main sealing barrier from Figure 9;

1 shows a portion of a seal and adiabatic tank 1 consisting of tank walls 2 and 3 fixed to the inner surfaces of the corresponding walls 4 and 5 of the support structure. The support structure is, for example, a double-hulled ship or a structure located on land. To contain a low temperature liquid such as LNG, the walls of the tank include one or more sealing barriers 6 and one or more insulating barriers 7. As a safety measure it is possible to provide an auxiliary sealing barrier, not shown, between the support structure and the sealing barrier 6, which sealing barrier is referred to herein as the primary sealing barrier.

The tank 1 may be produced in a different widely known geometry, for example in the geometry of a prism in the hull of a ship or in a cylindrical geometry on the ground.

Moreover, a number of methods are available, for example, to produce insulating and sealing barriers from pre-fabricated elements.

There is shown a rigid elongated member constituting a pedestal 10 extending through the insulating barrier 7 and the sealing barrier 6 in the bottom wall 3 of the tank and having one end connected to the bottom wall 5 of the supporting structure And the other end projects from the sealing barrier 6 into the tank. The pedestal 10 can support, for example, the equipment 9 immersed in the tank. For example, at the base of a pumping mast of a tank (not shown), to support the pump. Although a pedestal is shown here on the bottom of the tank, a similar rigid member can be arranged in the same manner at other locations in the tank, for example as a support or spacing element for holding an object apart from the tank wall .

It is possible to use a thin sheet metal plate characterized by a corrugation which forms an elastic region for absorbing heat shrinkage and static and dynamic pressure so as to form the sealing barrier 6. [ Such sealing pleat or wafer sheet metal barriers are described in particular 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 Fig. 3, the sealing barriers 6 consist of a plurality of pleated sealing plates 11 and the inner surfaces of the plurality of pleated sealing plates are intended to contact the fluid. The sealing plate 11 is a thin metal, for example stainless steel or aluminum, and is welded to each other in the edge overlap region 12. [ Welding is, for example, a type of overlap welding produced by the method described in detail in patent FR-A-1387955. The sealing plate 11 can be designed in various shapes for the shape and size of the sealing plate, so that the welding area can be positioned in various ways.

The sealing plate 11 has on its inner surface a first row of pleats, referred to as longitudinal pleats 15, and a second row of pleats, referred to as transverse pleats 16, Do. The corrugations 15 in the first row have a height smaller than the corrugations 16 in the second row. Thus, when the wrinkle portion 18 traverses the wrinkle portion 16, the wrinkle portion 15 is discontinuous. The longitudinal wrinkles 15 and the transverse wrinkles 16 project toward the interior of the tank 1.

Wherein the pedestal 10 has a circular cross section and has a truncated conical lower portion 13 connected to the cylindrical upper portion 14 at an end 17 of the smallest diameter. The largest diameter base of the truncated conical portion 13 abuts against the wall 5 of the support structure. The truncated conical portion 13 extends through the thickness of the tank wall beyond the height of the sealing barrier 6. The cylindrical portion 14 is closed in a sealing manner by a circular plate 19 which can, for example, be welded to an unillustrated inner rim of the cylindrical portion 14.

A corrugated sealing plate 11 forming a sealing barrier 6 is cut in a manner to define a square window 25 around the pedestal 10 to provide a passageway for the pedestal 10. A sealed assembly of continuous portions is formed between the pedestal 10 and the sealing plate 11 to set the continuity of the sealing barriers 6 at the height of the window 25. [ When the diameter of the pedestal 10 is greater than the spacing between the corrugations 15 in the first row, some of these longitudinal corrugations, denoted by 20, and the dashed line A of the corrugations crossing the pedestal 10, Is interrupted by the window 25.

Similarly, since the diameter of the pedestal 10 is greater than the spacing between the corrugations 16 in the second row, some of the transverse wrinkles indicated by 21 and the dichroic lines B ) Is interrupted by the window around the pedestal.

Moreover, as can be seen in FIG. 3, the window 25 is actually larger than the diameter of the pedestal 10, so that it is relatively easy to assemble the connecting portion. Thus, when formed in the pleated sheet metal layer, the window 25 is likely to stop the pleats in a similar manner, and the dashed lines of the pleats do not actually intersect the pedestals, It will be too close to the pedestal below.

The center C of the pedestal 10 is located between the dashed lines A of the interrupted wrinkles 20 and the dashed lines B of the interrupted wrinkles 21, Lt; / RTI > As a result of this positioning, each dashed line A or B intersects the pedestal 10 along a string that is shorter than the diameter of the pedestal 10. For this reason, and if a space must exist between the edge of the window 25 and the pedestal 10 to allow placement of the connecting part, this positioning of the pedestal is such that the parabola A or B has the greatest lateral dimension Thus making it possible to interrupt each of the wrinkles 20 and 21 over a shorter distance than if it were to intersect the pedestal along the diameter in the case of a circular cross section. It is advantageous to stop the corrugation of the sealing barrier over as short a distance as possible, given that such an interruption reduces the local flexibility of the sealing barrier and thus facilitates local fatigue and wear thereof.

In the case of a circular cross section, it provides an optimum result by centering the pedestal midway between the interrupted wrinkles and between the interrupted wrinkles 21. However, other section shapes and other locations of the pedestal may also be considered. In each case, the principle of functioning to apply the positioning of the pedestal between the wrinkles is to select a position that minimizes or at least reduces the lateral dimension of the pedestal that intersects the quasi-line of the interrupted wrinkle. If the particular geometry of the pedestal and / or the particular distribution of the corrugation of the membrane includes different interrupted lengths of the plurality of corrugations, the relevant optimal parameters for applying the position of the pedestal are the length of the longest interruption or the cumulative Lt; / RTI >

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

One embodiment of the tank wall in the region of the pedestal 10 is described in detail below with reference to Figures 4-8. This embodiment is particularly suitable for tanks having a wall comprising two sealing barriers and two insulating barriers. The barrier 6 is thus referred to as the primary sealing barrier. Only the vicinity of the pedestal 10 is described and the tank wall can be produced in accordance with the teachings of application FR-A-2781557.

4 is a view showing a substantial square area of the tank wall and half of the section of the pedestal 10 around the pedestal in the intermediate assembly step. The right portion is provided before the elements of the auxiliary sealing barrier and the main insulating barrier are provided and the left portion is provided after the placement of these elements.

In order to connect the pedestal to the auxiliary sealing barrier, the pedestal 10 comprises a very thin auxiliary insulating barrier 22 and a square auxiliary plate 23 (not shown) fixed around the truncated conical portion 13 at a height corresponding to the upper surface of the auxiliary sealing barrier ). In order to connect the pedestal to the main sealing barrier, the pedestal 10 includes a circular main plate 24 secured around the truncated cone portion 13 at a height corresponding to the top surface of the main insulating barrier 26. The plates 23 and 24 may be manufactured integrally with the pedestal 10.

Under the auxiliary plate 23, the auxiliary insulating barrier 22 also includes a glass-cotton packing 27 having a square outer contour. Under main plate 24, main insulating barrier 26 also includes glass-cotton packing 28 having a circular outer contour.

An auxiliary insulating barrier, an auxiliary sealing barrier and a main insulating barrier around packing 27 and plate 23 are produced by four edge panels and one of the four edge panels 30 is shown in the left part of FIG. . The panel 30 comprises an L-shaped bottom insulating block 31 constituting an element of the auxiliary insulating barrier 22, a sealable flexible coating 32 which completely covers the L-shaped upper surface of the block 31, And a smaller L-shaped upper insulating block 33 constituting the elements of the main insulating barrier 26. The L- The top block 33 is left uncovered with the outer sides of the bottom block 31 to cover the end rim of the bottom block 31 and the area of the sealable coating 32 located on the outer rim. The panel 30 can be made by attaching a material similar to that disclosed in application FR-A-2781557, particularly a polyurethane foam and plywood for an insulating barrier and an aluminum foil / glass fiber composite for an auxiliary sealing barrier .

The inner side surfaces of the four edge panels 30 are disposed beside the outline of the packing 27 and the plate 23. [ The size of the block 31 allows for the creation of a space therebetween in the form of four radial chimneys 34 positioned respectively between the end faces of two adjacent lower blocks 31. Each of the chimneys 34 is packed with a glass fiber film 35 to ensure the continuity of the main insulating barrier 26. The porosity of the glass fibers of the film 35 and of the packing 27 allows the gas to circulate through the main insulating barrier 26, in particular using nitrogen to deactivate the tank wall.

6 shows the fabrication of an auxiliary sealing barrier in the region of the pedestal 10 as seen from above. Four strips 36 of encapsulant aluminum foil and glass fiber composite material are attached to the backing plate 23 and to the encapsulating coating 32 of the panel 30 to provide continuity of the auxiliary sealing barrier around the pedestal 10 Lt; / RTI > Each strip 36 is positioned to overlap the uncovered inner rim of the two lower blocks 31 and one side of the auxiliary plate 27. The strips 36 overlap in the end region 37. The four strips 38 of the encapsulating aluminum film and the glass fiber composite material are arranged so as to overlap the rim at the edge of each of the two lower blocks 31 so as to form continuity of the auxiliary sealing barriers on the chimney 35, (32) of the substrate (30).

Figure 7 shows the same area of the tank wall after assembling the main insulating barrier. The main insulating barrier is completed by four corner blocks 40 and four intermediate blocks 41 between the pedestal 10 and the upper insulating block 33 which each have a packing 28 and a main plate 24). These blocks 40 and 41 are also shown in the left part of FIG.

As can be seen in detail in FIG. 5, each upper surface of the intermediate block 41 has a rebate 44 defined by step 43. The rebate 44 is at the height of the main plate 24 exactly to provide a planar support surface to the metal closing plate 45 which provides a primary sealing barrier around the pedestal 10.

As can be seen in Figure 7, two closing plates 45 are disposed around the main plate 24 and are welded in a manner sealed to the main plate around the perimeter of the closing plate. To this end, the inner edge 46 of the plate 45 is cut into a semicircular shape while the outer edge 47 of the plate 45 defines a square slightly larger than the window 25 in the pleated sealing plate 11 do. Two closing plates are overlapped in an area 48 where two closing plates 45 are welded to each other. Since the closing plate 45 is to be prevented from being lifted, particularly when the closing plates are welded to the main plate 24, the closing plates 45 are closed so that the closing plate 45 is pressed against such block, Is secured to the blocks 40 and 41 of the main insulating barrier by wood screws or rivets 49 disposed near the outer edges 47 of the plates.

2 and 3, in the region of the pedestal 10, the main sealing barrier 6 is formed on the other hand by welding the edge of the sealing plate 11 defining the window 25 to the closing plate 45 Closing end portions of the end pieces 50 and the wrinkles 20 and 21 interrupted in a sealing manner. The sealing plate 11 overlaps with the boundary of the closing plate 45 including the screw 49.

Fig. 8 shows an embodiment of the end piece 50. Fig. The end piece 50 is provided with a sealing means 52 at the end of the base plate and the corrugation 20 or 21 in the two portions 51 and 52 intended to be sealingly welded to the closing plate 45 and the sealing plate 11, (Not shown). The step 53 between the portions 51 and 52 of the base plate has a size substantially equal to the thickness of the sealing plate 11.

The manner of cutting the insulating block and other prebuilt components shown in Figs. 2, 4, 6, and 7 to form the auxiliary insulating barrier, the auxiliary sealing barrier, and the main insulating barrier is purely exemplary. Similar components can be cut and pre-fabricated in different shapes so that tank wall assembly includes more or fewer components. In a corresponding alternative embodiment, the four L-shaped edge panels 30 are replaced by a single panel having the shape of two U-shaped panels or square frames.

3, the pedestal considered above requires about twice the size of the spacing 55 between the two pleats 15 or 16 here, which is equidistant. To this end, the two pleats in each row are interrupted. However, this arrangement of the tank wall near the pedestal and pedestal can be applied with different pedestal dimensions. For example, for a wider pedestal, the corresponding window may interrupt one or more of the corrugations of each row, for example three or four corrugations or more than five corrugations. Moreover, it is possible to locally modify some of the pleats to limit the number of wrinkles to be interrupted to maintain a higher level of elasticity of the sealing membrane. This possibility is explained by the embodiment of Fig.

In Fig. 9, the same or similar components as those of Fig. 3 have the same reference numerals increased by 100. Fig. The lateral dimension of the pedestal 110 is greater, for example about three times or about three times the spacing 155 between the corrugations 115 or 116, The window 125 formed in the corrugated metal membrane interrupts the dichroic lines of the four corrugations of each row. However, instead of stopping the four wrinkles in each row, this embodiment stops two wrinkles 120 or 121 in each row as in the previous embodiment, while the other two wrinkles in each row The portions 158 or 159 are locally offset from the pedestal 110 for their original subduction, but are not interrupted.

To this end, the sealing barrier 106 is deformed at the height of the two concentric square windows 125 and 160. Outside the window 160, the sealing barrier 106 is comprised of a sealing plate 111 which supports the equiangularly distributed longitudinal wrinkles 115 and transverse wrinkles 116. Between the window 160 and the window 125 the sealing barriers 106 are provided with different corrugated sealing plates, i.e. two overall C-shaped plates 161, which are distributed differently, i. . The corrugations of the plates 161 constitute a central segment 162 or 163 offset from the pedestal 110, particularly for the corrugations 158 or 159, respectively. Finally, the structure of the interior of the window seal barrier 106 at the height of the window 125 is similar to the embodiment of FIG.

The bend portion 170 is adapted to form a bond in the window 160 between the central segment 162 or 163 of the corrugation 158 or 159 and the portion of the corrugation located outside the window 160. [

Figure 10 shows an embodiment of the bend portion 170. The bend portion 170 includes a base plate in two portions 171 and 172 intended to be welded in a sealing manner to each plate 111 or 161 of the sealing barrier 106 and to the adjacent bend portion 170 And a bended wrinkle portion 174 that forms a dashed line at a selected angle, e.g., 135 degrees. It is contemplated that the bended wrinkles 174 are connected in a sealing manner to the adjacent ends of the wrinkles 158 or 159 and to the bended wrinkles of adjacent bend portions. The step 173 between the portions 171 and 172 of the base plate has a size substantially equal to the thickness of the sheet metal from which the sealing plate 111 or 161 or the bend plate 170 is manufactured . Sheet metal of the same thickness is preferably used for these various parts.

In another embodiment suitable for a smaller diameter pedestal that is not shown, for example, all of the corrugations in which the quasi-line is interrupted by the window, for example two corrugations in each row as in Figure 3, 158 and 159, extending across the window according to the offset routing. In this embodiment, the flexibility of the membrane can be improved since the corrugation is not interrupted by the end piece at the height of the pedestal.

In the embodiment described above, the primary sealing barrier is formed of a sheet metal comprising two columns of mutually perpendicular wrinkles. However, other types of corrugated metal membranes may be applied in a manner similar to less or more corrugations and / or different arrangements of corrugations.

Although the present invention has been described in connection with a number of specific embodiments, it is evident that the invention is not limited to a number of specific embodiments, and includes all technical equivalents of the described means and combinations thereof within the scope of the present invention do.

The use of the terms " include " and " comprise " and their conjugations does not exclude the presence of other elements or steps than those listed in the claims. Unless otherwise indicated, the use of the indefinite article ("a" or "an") for an element or step does not exclude the presence of a plurality of such elements or steps. A plurality of means or modules may be provided by the same hardware element.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (18)

A sealing and adiabatic tank disposed within a support structure,
Said tank comprising a tank wall (3) arranged along said support structure (4)
The tank wall comprises:
The sealing barriers (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
(10, 110) immersed in said sealed tank,
Wherein the sealing barrier comprises a pleated sheet metal layer (11, 111) having at least one row of parallel pleats (15, 115), the pleated sheet metal layer being attached to the window (25, 160) Lt; / RTI >
Said support comprising a continuous hollow envelope (13, 14), a first end portion extending longitudinally through said window in said pleated sheet metal layer and abutting against said support structure, And a second end portion protruding into the tank to support the equipment, the second end portion having at least one convex side surface (13)
Wherein the sealing barrier comprises a connecting portion (24, 45, 50) disposed in a window about the pedestal to sealingly connect the pedestal to an edge of a pleated sheet metal layer defining the window,
The window (25, 160) stops the dewaxing of a plurality of parallel wrinkles (20, 120, 158) of the parallel wrinkles of the at least one row, and the bracket comprises two parallel Is centered at the position between the dashed lines (A) of one wrinkle (20, 120)
The dewaxes of the two adjacent wrinkles (20, 120) intersect the convex side of the pedestal,
Sealing and thermal insulation tanks.
The method according to claim 1,
The window interrupting the dashed lines (A) of the even number of parallel wrinkles among the parallel wrinkles of the one or more rows,
Sealing and thermal insulation tanks.
3. The method of claim 2,
Said window interrupting the dichroic lines of two adjacent parallel wrinkles of said at least one row of parallel wrinkles,
Sealing and thermal insulation tanks.
The method according to claim 1,
Wherein the pedestal is centered at the center of the dorsal lines of the two adjacent wrinkles,
Sealing and thermal insulation tanks.
The method according to claim 1,
The pedestal has a circular cross-section,
Sealing and thermal insulation tanks.
The method according to claim 1,
Wherein the one or more rows of parallel pleats (15, 115) are distributed equidistantly,
Sealing and thermal insulation tanks.
The method according to claim 1,
The pleats (15,115) project on the side of the inner surface of the sealing barrier intended to contact the fluid,
Sealing and thermal insulation tanks.
The method according to claim 1,
Wherein two adjacent parallel wrinkles (20, 120), adjacent the two parallel wrinkles (20, 120), wherein the base is centered between the squares (A) of the adjacent two parallel wrinkles Having an interrupted end spaced from the pedestal,
Wherein the connecting portion comprises a plurality of end portions (50, 150) spaced from the pedestal and disposed on interrupted ends of the two parallel wrinkles (20, 120)
The end portion (50, 150) closes the interrupted end of the two parallel wrinkles (20, 120) in a sealing manner,
Sealing and thermal insulation tanks.
The method according to claim 1,
Wherein the hollow envelope (13, 14) of the pedestal is tubular in shape, the longitudinal axis of the hollow envelope is perpendicular to the tank wall, the pedestal further comprises a transverse closure wall (19) The directional closing wall closes the envelope in a sealing manner to form continuity of the sealing barrier at the height of the pedestal,
Sealing and thermal insulation tanks.
The method according to claim 1,
Wherein the connecting portion comprises an annular plate (24) connecting from the height of the pleated sheet metal layers (11, 111) to the peripheral wall of the pedestal.
Sealing and thermal insulation tanks.
11. The method of claim 10,
The connecting portion further comprises an intermediate plate (45, 145) having a first edge welded to the annular plate and a second edge welded to an edge of the pleated sheet metal layer (11, 111) defining the window Including,
Sealing and thermal insulation tanks.
The method according to claim 1,
Said insulating barrier comprising a main insulating barrier (26) disposed on a side of said sealing barrier (6), referred to as a main sealing barrier, and an auxiliary insulating barrier (22) disposed on the side of said supporting structure, A tank wall comprises an auxiliary sealing barrier (23, 32, 36, 38) disposed between the primary and secondary insulating barrier, the secondary sealing barrier being hermetically connected to the peripheral wall (13)
Sealing and thermal insulation tanks.
The method according to claim 1,
The connecting portion
And a connecting plate (161) having a corrugation (162) parallel to the at least one row of parallel corrugations (115)
The corrugations 162 of the connection plate 161 are disposed on a line offset laterally away from the pedestal relative to one of the dashed lines interrupted by the window 160,
The connecting portion further includes a bend portion 170,
The bend portion 170 is
The first abutment of the bend portion 170 is connected to the first end portion of the corrugation portion 158 of the connection plate 161 by the first end of the corrugation portion 158 having the dashed line interrupted by the window 160 Connect,
The second abutment of the bend portion 170 is positioned at the second end of the corrugation 158 having a dashed line interrupted by the window 160 at the second end of the corrugation 162 of the connection plate 161 Are arranged to connect,
The first end portion and the second end portion of the corrugated portion 158 having a dashed line interrupted by the window 160 are positioned outside the window 160,
The two abutments, which are the corrugation 162 of the connection plate 161 and the bend portion 170, are sealed across the window 160 along a line offset laterally away from the pedestal 110 Extending the corrugated portion (158) having a dashed line that is interrupted in the manner of the first portion
Sealing and thermal insulation tanks.
The method according to claim 1,
The pleated sheet metal layer includes a first row of parallel pleats (15, 115) and a second row of parallel pleats (16, 116) intersecting the first row of parallel pleats at an intersection,
The window
The dashed line of the first plurality of parallel wrinkles in the first row of parallel wrinkles,
The dashed line of the second plurality of parallel wrinkles in the second row of parallel wrinkles, or
To stop the dichroic lines of the second plurality of parallel wrinkles among the parallel lines of the first plurality of parallel wrinkles and the parallel wrinkles of the second row among the parallel wrinkles of the first row,
The pedestal
Between the dashed lines (A) of two adjacent parallel wrinkles of the first plurality of parallel wrinkles,
Between the dashed lines (B) of two adjacent parallel wrinkles of the second plurality of parallel wrinkles, or
(A) of two adjacent parallel wrinkles of said first plurality of parallel wrinkles and between said second plurality of parallel wrinkles of said second plurality of parallel wrinkles, Centered in position,
Sealing and thermal insulation tanks.
15. The method of claim 14,
Wherein the first row of parallel pleats is perpendicular to the second row of parallel pleats,
Sealing and thermal insulation tanks.
16. The method according to claim 14 or 15,
Wherein the window (25, 160) is a quadrangle having two sides parallel to the corrugations of the first row and two sides parallel to the corrugations of the second row,
Sealing and thermal insulation tanks.
The method according to claim 1,
Wherein the pedestal (10, 110) is disposed in the base of the mast for lowering the tank,
Sealing and thermal insulation tanks. delete

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