KR890000444B1 - Insulating tank from shich leakage is not generated - Google Patents

Abstract

A tight and insulated tank is integrated in the load-bearing hull structure of a ship. A bottom insulating course consists of two layers of heat insulating boxes which are subdivided by parallel support webs and perpendicular spacers into compartments filled with perlite. They are sepd. from the top insulating course, consisting of one box layer, by sealing barriers of metal plates. Insulation reduces the evapn. rate of liquefied natural gas with a high methane content of 0.12 wt.% per day without any rise in the cost of building the tanker.

Description

Anisotropic insulated tank integrated into the load bearing structure of the hull

1 is a perspective view showing various types of elements formed by a non-free insulation tank according to the present invention.

2 is a plan view showing the enclosure of the secondary layer of the secondary insulation wall with a portion of the upper surface of the enclosure removed.

3 is a plan view showing the enclosure of the primary layer in the state of FIG.

4 is a plan view showing the enclosure of the primary insulating wall in the state of FIG.

FIG. 5 is a detailed sectional view along the line VV of FIG. 4. FIG.

6 is a detailed perspective view showing a state in which the secondary layer enclosure of the secondary insulating wall is fixed.

7 is a detailed perspective view showing a state in which the primary layer enclosure of the secondary insulating wall is fixed.

8 is a detailed perspective view showing a state in which the enclosure of the primary insulation wall is fixed.

FIG. 9 shows a cross section perpendicular to the entire load bearing structure on the opposite side of the enclosure support of the primary layer of the secondary insulation wall, showing a state in which the support extends into the fastener together of the primary insulation wall.

The present invention relates to a structure of an insulative insulated tank used for maritime transportation of a liquefied gas, in particular for transporting a natural liquefied gas having a high methane content.

French Patent Publication Nos. 1438330, 2105710, 2146612 and 2413260 show the structure of an insulative insulating tank which is already integrated into the load bearing structure of the hull and formed as two continuous barrier walls, where the primary barrier wall is a liquefied gas A secondary barrier is arranged between the primary barrier and the load-bearing structure of the hull, the two barriers being alternately arranged with two thermal insulation layers called insulation walls. When transporting a very low temperature liquefied gas, the above-described structure can sufficiently reduce the evaporation per unit day toward a satisfactory economic point of view. In general, by weight ratio, the evaporation rate is 0.18% per day of transportation. The vaporized gas is used in the propulsion engine of the transport ship. However, it can be foreseen that the propulsion of transport ships can be secured more economically than burning expensive combustible gases such as gases with high methane content. From this point of view, it is effective to reduce the evaporation of the transport liquefied gas as much as possible, ie to improve the insulation of each tank. Several methods have already been proposed for tank structures using a plastic toam panel as a heat insulating material (see French Patent Publication No. 2413260). Since plastic foams have excellent thermal insulation properties, increasing the thickness a little can reduce heat exchange during transportation, i.e. evaporation loss. However, the most inherent drawback in structures using plastic foams is that they are very expensive. On the contrary, even in the economic view, even with the use of reduced plastic foam, the increase in the amount of foam used is a significant disadvantage for the price.

This results in the reduction back to the thermal insulation walls presented in French Patent Publications Nos. 1438330, 2105710 and 2146612, which consist of a parallelepiped caisson filled with insulation. However, if the thickness of the insulating wall of the insulating wall is increased, it will be able to withstand the buckling of the wall and the correction pressure acting by the liquid contained in the tank and the liquid contained in the tank. The risk of buckling of load bearing crosspieces installed perpendicular to the barrier of the tank is significant. If it is desired to increase the resistance to buckling of the enclosure and its load-bearing transverses, the cross section of the transverses must be increased, corresponding to the increase in thermal bridges formed between the liquefied gas and the load-bearing structure of the hull. do. Therefore, the enclosure structure should increase the thickness of the insulation wall of the tank due to the insulation effect, which is almost impossible. Moreover, if the thickness of the enclosure is increased, convection of the gas occurs as the temperature gradient between two successive walls increases in the enclosure, which is very detrimental to achieving a good thermal insulation effect. .

Therefore, the improvement of the thermal insulation properties in terms of the tank structure can only lead to a significant increase in cost. It is an object of the present invention to propose a new structure of a non-insulating insulated tank, whereby the evaporation loss can be reduced without increasing the cost of the transport ship. According to the present invention, in order to avoid an increase in cost, the insulation wall is formed as a enclosure filled with insulation, and the secondary insulation wall is formed with double layers to avoid difficulties caused by the increase in the thickness of the enclosure. The enclosure of each layer is composed of load-bearing transverses parallel to only one of the two sides of the transverse piece and the enclosure side arranged to cross each other so that the thermal bridge appears only at the fixed portion of the load-bearing transverse piece of the two layers. From a mechanical point of view, the formation of load-bearing transverses in the two layers can withstand the correction and dynamic pressures acting on the tank wall, while at the same time reducing the heat loss considerably, because the heat loss only occurs at the fixed part of the transverse. And the thickness of the transverse piece does not increase with the structure. The thickness of the secondary insulating wall can thus be doubled without mechanical defects. Moreover, since the two layers of the secondary insulating wall are separated from each other, no convection shape occurs in the enclosure. Finally, the cost of a double thick secondary single wall structure in accordance with the present invention is less expensive than in the case of a unit thick secondary thermal insulation wall formed essentially of plastic foam. Thus, the present invention imparts a significant improvement to the thermal insulation properties of an insulative insulated tank integrated into the load bearing structure of the hull without increasing the intrinsic cost. Therefore, the transportation of high methane-containing liquefied natural gas can reduce the evaporation rate by about 0.12% per day by weight.

가 아닌 가급적 약 90

로 형성되도록 하는 것을 특징으로 한다.It is therefore an object of the present invention to provide a new structure formed by an anisotropic isothermal tank integrated into the load bearing structure of the hull, wherein the tank consists of two continuous barrier walls, the primary barrier wall being contained within the tank. The secondary barrier is arranged between the primary barrier and the hull load-bearing structure, and these two barriers are alternately placed with the two insulation walls and the primary barrier and the secondary barrier are tanks. A metal plate formed by an edge lifted inwardly, the metal plate being formed as a metal sheet having a low coefficient of expansion, and having the raised edges and edges on both sides of the weld flange dynamically positioned on the elements of the insulating wall beneath it. Welded to the secondary insulating wall, the secondary wall being secured to the load bearing structure by means of the supporting elements fixed to the load bearing structure. Consisting of parallel hexahedral insulating elements, each supporting element being combined with a fixing device disposed on the edge of the insulating element of the secondary insulating wall, said insulating elements being connected to each other by a linear connection portion on which the fixing element is installed. The primary insulation wall is separated and is configured as a series of insulation elements which are held in a supporting position on the secondary barrier wall by means of fixing elements fixed to the load supporting structure of the hull, the fixing elements penetrating the secondary barrier wall, The sealing of the secondary barrier wall is maintained by welding the tightening device to the plate of the secondary barrier wall, wherein the secondary insulation wall is formed of two overlapping layers of insulation elements, and the primary layer is directly below the secondary barrier wall. And a secondary layer is disposed between the primary layer and the load supporting device of the hull, and two layers of each secondary thermal insulation wall are formed as a thermal insulation enclosure composed of load supporting transverse pieces parallel to each other. It is formed as a heat insulation enclosure composed of transverse pieces of the enclosure of the layer, and the position of the transverse piece of the enclosure of the two layers is 0.

Preferably about 90

Characterized in that it is formed.

In a representative embodiment, the supporting elements of the primary layer of the secondary insulating wall pass through the secondary layer of the secondary insulating wall fixed on the load bearing structure of the hull, and the connection between the insulating elements of the two layers of the secondary insulating wall is fluctuating. The supporting elements of the primary layer of the secondary insulation wall are formed with an extension penetrating the secondary barrier wall while forming a fastening device to hold the insulation element of the primary insulation wall in place. The extension of the supporting device of the vehicle floor is connected to the secondary barrier wall in a hermetic form by peripheral welding.

Each support element formed on one layer of the secondary insulation wall is coupled with four fasteners formed at adjacent edges of the four insulation elements of the layer. The fixing of the single element of the secondary insulating wall is taken in the form of cleats arranged near the exposed edges on the enclosure wall, with connections formed between the enclosures. The elements of the primary or secondary insulation wall form all the connecting parts in parallel with each other, and the one element and the insulating layer are in contact with each other along each corner not forming the connecting part. The supporting device formed of the insulating element of the primary layer of the secondary insulating wall and the tightening device formed of the insulating element of the primary insulating wall are constituted as deformable parts which can secure the elastic tightening.

Furthermore, the two-layer enclosure of the secondary insulating wall includes nonload bearing crosspieces disposed therein between the load bearing transverses. The enclosure of the primary insulating wall is composed of load-bearing transverse pieces parallel to each other and unloaded supporting transverse pieces arranged between the load-bearing transverse pieces. The enclosures forming the primary and secondary insulation walls consist of load-bearing transverse pieces formed of walls and plywood, and the load-bearing transverse pieces of the enclosure are formed parallel to either side of the enclosure and are unloaded. The transverse sections are installed at right angles to the load bearing transverse sections and consist of adiabatic plastic foam. The enclosure of the primary insulation wall forms a straight groove that is formed to be cut into a load bearing transverse side to accommodate the welding flange protruding on the secondary barrier wall on a side facing the secondary barrier wall. The enclosure of the primary layer of the secondary insulating wall forms a groove formed at right angles to the connection portion on its side under the barrier wall, each groove forming a T-shaped cross section and one side of which is welded flange. Will be surrounded. The base plate is welded on the upwardly bent edges, and the insulation elements of the primary and secondary insulation walls consist of a enclosure filled with a special material with good insulation properties.

The enclosure of the secondary layer of the secondary insulation wall is also made in a known manner, the secondary insulation wall being formed on strips located on the hull load supporting device in which projections made of polymerizable resins are involved. Supported by a support device connected to it, these bands are reformed by discontinuous elements and form a geometry independent of the deflection of the load bearing structure relative to the theoretical plane.

Primary and secondary barriers shall have continuous support on the underlying insulation walls. Therefore, it is necessary to prevent the connecting portion from forming any part without supporting the metal plate forming the barrier wall. Between the elements of the insulating wall, the supporting and tightening devices are fully tightened and fixed, and then closed by a block that is filled with the insulating material and fitted into a position in the connection or vice versa behind the plate forming the blocking wall. Therefore, the presence of the connection part is necessary.

According to the present invention, each support device formed in the primary layer of the secondary insulation wall is enclosed in the enclosure by an insulation sleeve installed between two load-bearing transverse pieces in the enclosure, while the enclosure of the secondary layer is closed. It penetrates at the center. The supporting device of the secondary insulating wall primary layer may advantageously be formed by a rod inserted at the base into the threaded socket welded to the hull load bearing structure, the rod being insulated from the head by tightening the nut. With a stirrup supported on the pedestal of the enclosure of the wall primary layer, one plate forms a threaded hole, welded onto the reinforcement at the height of the secondary barrier wall and one extension threaded into the hole described above. It consists of a bolt and a collar (collar) is inserted into the head is accompanied by a plate to support the base of the enclosure of the primary insulation wall by tightening the bolt.

It is also an object of the present invention to provide a product in a liquefied gas carrier comprising at least one non-insulating insulated tank integrated in the load bearing structure and having the characteristics defined as above.

In order to more easily understand the object of the present invention will be described as follows in accordance with the accompanying drawings.

Referring to the drawings (1), a load bearing structure of the hull, i.e. a double plate or double bulkhead, which supports the wall of the tank according to the invention. The side face of the load bearing structure 1 due to manufacturing tolerances has a local deformation which becomes difficult to obtain a tank according to the present invention. According to a known method, the plywood strip 2 placed on the projection of the polymerizable resin 3 on the side 1 is arranged and the position of the strip 2 is adjusted so that the shape of the side in a discontinuous manner is good or bad. Regardless, it forms a theoretical side.

On the strip 2 the elements of the secondary insulating wall secondary layer are located and these elements are defined as (4) as a whole. Each element 4 is configured as a parallelepiped enclosure formed from a plywood of 1.2 m x 1 m. This enclosure includes a transverse piece 5 parallel to the long side of the enclosure. The horizontal piece 5 is inserted between two long sides of the enclosure, and one of the long sides is placed on the strip 2. An unloaded support horizontal piece 6 is provided between the load supporting transverse pieces 5 for the purpose of simply securing the relative position of the transverse piece 5, and the unloaded supporting cross piece 6 is formed of foamed resin. . Each enclosure 4 is 25 cm thick. Each enclosure consists of five load-bearing transverse pieces 5 and three unloaded transverse pieces 6. A hole 7 is drilled in each long side central portion of the enclosure 4. This hole 7 is circular and on the opposite side of the hole there is one sleeve 6a formed of a plastic foam block which serves as an unloaded supporting piece 6 between two load supporting pieces 5. It is installed. The sleeve 6a together forms a cylindrical hole perpendicular to the long side of the 4. It protrudes from the side wall of a ship box on the two small ends 8 of the long side of the enclosure 4 mounted on the belt | belt 2. As shown in FIG. The enclosure edge on the protrusion is made for a pedestal 9 of the same thickness as the protrusion. This pedestal 9 constitutes an apparatus for fixing the enclosure 4.

The pedestal 9 is coupled to a support device formed by a gudgeon 10 welded to the load bearing structure of the hull, which bears the nut 11 on the square plate 12. It includes a threaded end (10a) to be coupled. When the four enclosures 4 are each positioned to have adjacent edges in the bearing 10, the four pedestals 9 near the bearing 10 are positioned by the plate 12 which is coupled to the bearing 10. Can be maintained. Tightening the nut 11 such that the plate 12 supports the four pedestals 9 allows the four enclosures 4 adjacent to the bearing 10 to be held in position. The enclosure 4 is thus retained on its four corners by the plate 12. The enclosure 4 is adjacent to each other along its surface perpendicular to the arrangement of the bearing 10, and the enclosure 4 is a connection in which the pedestal 9 and the support devices 10, 11, 12 are located. Spaces are formed between the sites. Eventually after all the support devices are screwed in, the connection is blocked by a block of plastic material 13 which has a longitudinal slit which allows it to be elastically inserted into the connection. The portion of the connection that is not filled by the block 13 may be filled with glass wool. A longitudinal passage 13a is formed in the block 13 so that nitrogen can be circulated through the secondary layer of the secondary insulating wall.

The secondary insulating wall is composed of the above-described secondary layers and the primary layers are formed by the enclosures indicated by 14, respectively. A series of enclosures 14 is mounted directly on another series of enclosures 4. Each enclosure 14 is formed as a parallelepiped of the plate material and has a thickness of 20 cm, and its long side has the same size as the long side of the enclosure 4. In each enclosure 14, seven equidistant load supporting horizontal pieces 15 parallel to the short side and three unloaded supporting horizontal pieces 16 parallel to the long side are formed. The load supporting cross piece 15 of the laminate is inserted between the two long sides of the enclosure 14 and the unloaded supporting piece 16 has the same function as the cross piece 16 as a plastic foam. Each enclosure 14 includes a pedestal 17 protruding from the side of the enclosure at each of four corners on its short side. The long side of the enclosure 14 provided in the tank, that is, the opposite side of the enclosure 4, forms two grooves 18 in which the enclosure is parallel to the long side. This groove 18 is formed in the thickness of the long side of the enclosure and has a T-shaped cross section. Within this groove 18 is a welding flange 19 formed of an invar that is folded at right angles to have an L-shaped cross section.

The primary layer supporting device of the secondary insulating wall is made by the rod 20 and the base of the rod 20 is screwed into the socket 21 welded to the load supporting structure of the hull. The socket 21 is formed to be located on the opposite side of the hole 7 of the housing 45. The rod 20 fits through the enclosure 4 and has a hole of the hole 7 and the sleeve 6a. After determining the position of the rod 20, the glass fiber packing is installed around the rod 20 filling the hole 6a. The rod 20 is secured by being inserted into the lower part of the socket 21 and is formed by forming a stiffener 22 on the opposite end of the socket 21 and the edges of the stiffener are four adjacent enclosures 14 positioned around the same rod 20. Are supported on four adjacent pedestals 17). Tightening the reinforcement 22 on the four pedestals 17 is accomplished by a nut 23 that fits into the corresponding threaded end of the rod 20 and a Belleville washer 24 is nut 23. And is inserted between the reinforcement 22.

After fixing the support device 22 on the fixing member 17, the plate 25 is positioned between the side surfaces of the reinforcing material 22, and the height of the plate 25 is equal to the height of the long side of the enclosure 14. Adjusted to be equal. At its center, the plate 25 forms a spiral hole 25a. A plastic block 26 having a longitudinal slit formed is inserted into the connection portion formed between the rods 20 so that the gap is elastically compressible within the connection portion and fixed therein by an elastic locking action. The block 26 forms a longitudinal groove 26a having the same function as the groove 13a of the block 13. The part of the connection part of this primary layer is not occupied by the heat insulating material block 26, and it is more preferable if it is packed with glass fiber to improve heat insulation.

In the secondary layer of the secondary heat insulation wall, the secondary barrier wall formed of the in-bar plate 27 having the end is positioned. The plate 27 is arranged between two successive welding flanges 19. They have a width of 50 cm and welding is carried out continuously on either side of the flange 19 to ensure sealing. The flange 19 supports the secondary barrier wall on the enclosure 14. The supporting surface of the secondary barrier wall is continuous on the opposite side of the connection between the enclosures 14 because of the block 26 and the plate 25. On both sides of the groove 18 of the enclosure 14, the block 26 allows the flange 19 to pass freely in the depression 26a. Thus, when the secondary barrier wall is formed, the pressure is reduced between the load supporting structure 1 and the secondary barrier wall. The metal plate 27 has an extremely thin thickness (about 0.15 cm) and has a slightly settled portion opposite the respective holes 25a of the plate 25. The metal plate 27 is fitted on the opposite hole 25a and the spiral collar 28 is inserted in the hole 25a so that the peripheral flange 28a of the collar 28 supports the corresponding metal plate 17. The welding is carried out around the flange 28a to rebuild the sealed state of the secondary barrier wall, and the fabrication of the tank now leads to the positioning of the primary insulation wall.

The primary thermal insulation wall is formed as an enclosure 29 which is positioned by a fastener fixed to the collar 28.

Each enclosure 29 is in the form of a parallelepiped rectangular box of laminate, the thickness of which is 20 cm and the length of the long side is the same as that of the enclosures 4 and 14. Within the enclosure 29, seven load bearing crosspieces 30 are arranged, the relative positions of which are held as unloaded bearing crosspieces 31 of the plastic foam. On the face of the enclosure corresponding to the short axis of the wide face, a pedestal 32 is arranged, extending along the edge formed toward the interior of the tank, and extending over the edge where the joggle 33 is formed at its two ends. The long side of the enclosure 29 located inside the tank protrudes above it without engaging the pedestal 32. Moreover, this side has a groove 34 cut out in the thickness of the side perpendicular to the pedestal 32. This groove 34 takes a T-shaped cross section and is identical to the groove 18. This groove helps to position a welding flange 35 of the same type as the flange 19. The long side of the housing 29 on the opposite side on which the groove 34 is formed forms a groove 35 in the transverse piece 30 on the opposite side. The groove 35 receives the welding flange 19 and the metal plate 27 coupled thereto. In fact, the welding flange 19 protrudes into the tank with respect to the plane of the secondary barrier wall and therefore has to enter into the groove 35 for the enclosure 29 which can bear against the secondary barrier wall.

Positioning the enclosure 29 on the secondary barrier wall is a four bite of four adjacent enclosures 29 arranged around the bolt and collar 28 by means of a fastener comprising a bolt 36 on which the head 38 is formed. It is made by the square plate 37 supported on the piece 33. The bolt 36 is inserted into the collar 28, the square plate 37 is located on the bite 33, and the Belleville washer is inserted between the square plate 37 and the bolt head 38. Therefore, it is possible to reliably fix the primary heat insulation wall composed of the enclosure 29 on the load supporting structure 1 as a whole.

Keeping the two layers of the secondary insulation wall in place is due to the elastic force of the Belleville washer 24, and similarly, fixing the primary insulation wall in place is also due to the elastic force of the Belleville washer 39. . Thus, shrinkage of the wood making up the enclosure can be compensated for because of the permanent nitrogen waste formed during operation on the primary and secondary insulation walls.

Opposite the tightening devices 36, 37, 38, 39 are mounted square blocks 40 for closing the holes opposite the bite pieces 33. In this way, the wide surface of the enclosure 29 forming the grooves 34 forms a continuous surface supporting the primary barrier wall of the tank by the block 40. The primary barrier wall is made of an in-bar metal plate 41, which is the same as the plate 27 described above. The metal plate 41 is welded to the protruding edge on either side of the welding flange 35 located in the groove 34.

Together 4, 14 and 29 described above are filled with a heat insulator such as perlite or the like.

By the structure mentioned above, the tank structure excellent in all the heat insulation characteristics is obtained. In fact, the evaporation rate of liquefied natural gas of high methane content can be reduced from 0.18% to 0.12% by weight per day transported.

The cost of such a structure, considering the high value of plastic foam, is not enormously expensive. The fact that the insulating layer is not made of a foamable material makes it possible to compensate for the increase in the workload for the two enclosure layers forming the secondary insulating wall.

The above-described embodiments are not necessarily limited thereto, and any modifications may be made without departing from the scope of the present invention.

Claims (16)

The tank consists of two successive barriers, one of which forms a primary wall in contact with the material contained in the tank, and the other of which forms a secondary wall arranged between the primary wall and the load bearing structure of the hull. The two barrier walls are alternately disposed with two insulation walls, and the primary and secondary barrier walls are formed by a metal plate and an edge raised toward the inside of the tank, and the metal plate is a thin plate having a small coefficient of expansion. (I) sandwiched by raised edges on two sides of the weld flange, which are mechanically supported on the elements of adjacent thermal insulation walls, welded edge by edge, and the secondary thermal insulation wall is fixed on the load supporting structure. It consists of parallelepiped insulating elements, which are fixed on the load bearing structure by means of a device, each supporting device being a model of the insulating element of the secondary insulating wall. It is combined with a fixing device attached to the lith, and the heat insulating elements are separated from each other by a linear connection portion on which the fixing device is arranged, and the primary heat insulating wall is also configured as a series of heat insulating elements, and on the load supporting structure of the hull. Supported on the secondary blocking wall by a tightening device fixed to the, the tightening device penetrates the secondary blocking wall, the sealing of the secondary blocking wall is to connect the tightening device to the metal plate of the secondary blocking wall. In an insulative heat insulating tank integrated into a load supporting structure of a hull made by welding, the support device 20 to 24 of the primary layer 14 of the secondary insulating wall is fixed to the load supporting structure 1 of the hull. The connecting portions of the heat insulating elements 4 and 14 penetrating through the second layer of the primary heat insulating wall and forming the second layer of the secondary heat insulating wall can swing, and form the primary heat insulating wall and the second heat insulating wall. Insulating elements (4), (14) and (29) add up It consists of load-bearing transverse pieces (5), (15), (30) and walls of the plate, the load-bearing transverse pieces of the thermal insulation element being parallel to one of the sides of the thermal insulation element, and the unloaded supporting horizontal pieces (6) , (16), (31) is an insulated, insulated tank integrated into a load-bearing structure of a hull, characterized in that it is made of insulated plastic foam and arranged at right angles to the load-bearing transverse. 2. The supporting device (20 to 24) of the primary layer of the secondary insulated wall is accompanied by an extension (25) (28) (36) through the secondary barrier wall, and the primary insulated wall (10). A heat-free insulation tank, characterized in that to form a tightening device to keep the insulation element 29 in place. The method of claim 2, characterized in that the extensions 25, 28 and 36 of the support devices 20 to 24 of the primary layer of the secondary insulating wall are hermetically connected to the secondary barrier wall by welding of the periphery. A non-insulating insulated tank. 4. The supporting elements (12) (22) of claim 2 or 3, which constitute one layer of the secondary insulating wall, are located at adjacent edges of the four insulating elements (4) (14) of the corresponding layer. An insulative insulated tank characterized in that it is combined with four fasteners arranged. 5. The fixing device of the insulating element constituting the secondary insulating wall is a pedestal (9) (17) arranged near a corner of the wall of the enclosure (4) (14), with a connecting portion formed therebetween. A heat-free insulating tank characterized in that. The elements (4) (14) (29) of the primary or secondary thermal insulation walls all form a connection in parallel with one another on one side and the same along the side that does not form a connection. A heat-free insulating tank, characterized in that the insulating elements of the insulating layer are in contact with each other. The supporting device (20 to 24) of the heat insulating element (14) constituting the primary layer of the secondary heat insulating wall and the tightening device (36 to 39) of the heat insulating element (29) of the primary heat insulating wall (20) are elastic. An insulative insulating tank, characterized in that it comprises a variable portion forming a tightening. 2. The second layer of thermal insulation elements (4) (14) according to claim 1, wherein the interior of the secondary insulation walls (4) and (14) are unloaded across the load supporting side pieces (5) and (15). A heat-free insulating tank characterized in that the configuration. 2. The heat insulating element 29 of the primary insulating wall according to claim 1, wherein the heat insulating element 29 of the primary heat insulating wall has a load-bearing transverse piece 30 arranged between the load-bearing transverse piece 30 and the transverse piece 30 arranged in parallel with each other. A heat-free insulating tank, characterized in that configured. The heat insulating element 29 of the primary heat insulating wall forms a straight groove 35 formed by cutting inward of the load bearing transverse piece 30 on the opposite side of the secondary blocking wall. 35) is a non-insulating tank characterized in that the welding flange 19 protruding on the secondary barrier wall (27) is inserted. The heat insulating element (29) of the primary heat insulating wall and the heat insulating element (14) constituting the primary layer of the secondary heat insulating wall have a groove (18) orthogonal to the connecting portion on a surface in contact with the lower part of the barrier wall. 34, each groove having a T-shaped cross section so that one side thereof surrounds the weld flanges 19, 35 welded to a metal plate with raised edges 27, 41. A heat-free insulating tank characterized in that. The insulated tank according to claim 1, wherein the insulating elements (4) (14) (29) of the primary insulating wall and the secondary insulating wall are filled with a special material having insulating properties. The insulating element 4 constituting the secondary layer of the secondary insulating wall is interposed between the projections 3 made of polymerizable resin by means of the supporting devices 10, 11 and 12 coupled thereto. It is mounted on a strip (2) located on the load supporting structure (1), and the planes independent of the deformation of the load supporting structure (1) with respect to the theoretical plane are defined by discontinuous elements. A non-insulating tank characterized in that it is reformed. The elements (4) (14) and (29) of the thermal insulation wall according to claim 1, which are formed by the supporting devices (10, 12, 12, 20, 21, 22, 23, 24) and the fasteners (36-39). The connection part is filled with insulation after the fixing device is tightened, and is closed behind the metal thin plates 27 and 41 which form a barrier by blocks 13, 26 and 40 located at the connection part. A non-insulating insulated tank. 2. The supporting device of claim 1, wherein each support device of the elements 14 constituting the primary layer of the secondary insulating wall penetrates the insulating element 14 above the center of the secondary layer, and the load-bearing transverse pieces 5 of the two insulating elements. And an insulated tank in which it is enclosed in the insulation element (4) by an insulation sleeve (6a) arranged between. The support of the primary layer of the secondary insulating wall is formed by a rod (20) fitted into a threaded socket (21) welded on the load bearing structure (1) of the hull at its base. The rod 20 carries a reinforcement 22 which is supported on a pedestal 17 of the thermal insulation element 14 which forms a primary layer of the secondary thermal insulation wall by means of a nut 23 on its head. (25) is welded onto the reinforcement (22) at the height of the secondary barrier wall (27), which also has a threaded hole (25a), the collar (28) and the bolt (36). An extension constituted by a pedestal 32 of the thermal insulation element 29 which penetrates through the secondary barrier wall and is inserted into the hole 25a and forms a primary thermal insulation wall by tightening a bolt 36 to its head. Non-insulating tank characterized in that it has a plate (37) supported on the).

Images