Bearing support and method for manufacturing the same
The synthetic resin-compressed wood storage block with an aerogel-filled gap addresses cracking issues in resin-coated wood bearing blocks by enhancing thermal insulation and flexibility, thereby extending the service life.
Patent Information
- Application Number
- EP2022150870
- Authority / Receiving Office
- EP · EP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-02-05
- Filing Date
- 2022-01-11
- Publication Date
- 2025-09-10
- Estimated Expiration
- 2042-01-11
AI Technical Summary
Existing resin-coated wood bearing blocks for cryogenic liquid tanks are prone to cracking due to thermal stress and poor thermal insulation, leading to reduced service life and potential destruction.
A storage block made of synthetic resin-compressed wood with a gap filled with aerogel, which provides thermal insulation and flexibility to mitigate thermal stress, preventing cracking and extending the service life.
The aerogel-filled gap maintains the strength and thermal insulation of the bearing block, preventing cracking and ensuring durability under thermal stress.
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Abstract
Description
[0001] The invention relates to a storage block for storing a tank for cryogenic liquids, in particular liquefied petroleum gas, LNG, LPG, ethylene, or the like, and to a method for its production. The storage block is formed from synthetic resin-compressed wood. The synthetic resin-compressed wood is formed from veneers impregnated with a synthetic resin and arranged in a stack. The stack is subsequently compacted at high temperatures to form the synthetic resin-compressed wood. The storage block forms a bearing side facing the tank for connection to the tank. The invention further relates to a tank with a storage block, a ship with a storage block, and the use of an aerogel for producing a storage block.
[0002] Resin-coated plywood is well-known and used in various technical fields. Due to its advantageous electrical properties, it is regularly used as an electrical and thermal insulation material in oil-filled power transformers, turbogenerator rotors, and similar applications where heavy components must be supported.
[0003] Resin-coated wood, which is defined and technically described in DIN EN 61061, is typically made from veneers, with the veneers typically being obtained by slicing or peeling a log. Accordingly, a distinction is made between sliced veneers and rotary-cut veneers. The veneers are then impregnated, particularly soaked or coated, with a synthetic resin and arranged in a stack. The stack is then compacted or pressed at high temperatures to form the resin-coated wood. The term "high temperatures" here refers specifically to a temperature range of 100 to 300 °C, preferably in the range of 150 °C.
[0004] All technical standards listed in the present patent application refer to the version valid on the date relevant for the priority of the present patent application (priority date).
[0005] It is also known to use resin-coated wood to construct bearing blocks for storing tanks for cryogenic liquids. This resin-coated wood is impregnated with a synthetic resin, allowing a sufficiently stable bearing block to be constructed from the resin-coated wood. A tank is typically supported by several bearing blocks or a row of bearings, which can form a fixed or loose bearing for the tank. Due to the good thermal insulation properties of resin-coated wood, it is well suited for constructing such bearing blocks. On a bearing side of the bearing block facing the tank in question, the temperature on the bearing side can, for example, be -160°C or lower if a metal tank is filled with a cryogenic liquid. The underside or bearing underside of the bearing block facing away from the tank can, for example, have a temperature of -30°C to 0°C or higher.The height of the bearing block is therefore dimensioned to achieve the desired insulating effect. It is crucial that, especially if the tank is installed in a ship, no components adjacent to the bearing block are cooled below 0°C, as this could lead to brittle fracture of the component or the component must not be cooled below a certain permissible temperature. For example, the elastic limit of steel, especially ship steel, can be significantly altered by cooling below 0°C.
[0006] A comparable arrangement of such bearing blocks is known, for example, from EP 1 945 498 B1. However, it has been shown that undesirable cracking can occur in a bearing block. This can occur if the bearing block is cooled very quickly on the bearing side as a result of a tank being filled. Due to the good thermal insulation effect of the synthetic resin pressed wood, cooling from the bearing side into the bearing block progresses only very slowly, so that large temperature differences within the bearing block in the area of the bearing side and thus stresses on the bearing side can occur that cause cracks. Any cracks that form can lead to a reduction in the strength of the bearing block in question and even to its destruction. The formation of ice at the cracks can also reduce the insulating effect.
[0007] The present invention is therefore based on the object of proposing a storage block for storing a tank for cryogenic liquids or a tank with a storage block, a ship with a tank and a method for producing a storage block, which is improved with regard to a service life.
[0008] From DE 10 2014 203 351 A1 a bearing block with the features of the preamble of claim 1 is known.
[0009] This object is achieved by a storage block having the features of claim 1, a tank having the features of claim 20, a ship having the features of claim 21, a method having the features of claim 22 and a use of an aerogel having the features of claim 23.
[0010] The storage block according to the invention for storing a tank for cryogenic liquids, in particular liquefied gas, LNG, LPG, ethylene or the like, in a ship is made of synthetic resin compressed wood, wherein the synthetic resin compressed wood is made of veneers that are impregnated with a synthetic resin and arranged to form a stack, wherein the stack is subsequently compressed at high temperatures to form the synthetic resin compressed wood, wherein the storage block forms a storage side facing the tank for connection to the tank, wherein in the storage side a gap is formed in the synthetic resin compressed wood, which runs substantially orthogonal to the storage side, wherein the gap is filled with an aerogel.
[0011] As has been found, the bearing block according to the invention, thanks to the gap formed in the bearing side, which is filled with aerogel, does not have significantly poorer strength properties compared to a corresponding bearing block without a gap, since the bearing side is essentially subjected to a compressive force. Furthermore, the gap makes it possible to prevent the undesirable formation of cracks in the bearing side region. Since the gap runs through the bearing block in the bearing side region, the bearing side of the bearing block is divided into at least two surface areas. The aerogel located in the gap has particularly good thermal insulation properties and is hydrophobic. At the same time, the aerogel is flexible and can compensate for stresses resulting from thermal expansion in the gap region and for shrinkage in resin-coated wood.The good thermal insulation properties of the aerogel also make it possible to keep the gap relatively narrow, so that the strength of the bearing block is essentially unaffected, while still thermally separating the resin-filled plywood on either side of the gap. At the same time, filling the gap with the aerogel effectively prevents the penetration of dirt, water, or similar substances into the gap. Overall, this prevents cracking due to thermal stresses and thus extends the service life of the bearing block.
[0012] The gap can be formed from a side surface of the bearing block adjacent to the bearing side to an opposite side surface of the bearing block adjacent to the bearing side. Accordingly, the gap can run continuously from the side surface to the opposite side surface. In principle, however, it is also possible to form the gap only in sections of the bearing side.
[0013] The gap can penetrate the bearing block in sections, preferably up to 20%, 35%, 50% or 70% of the height of the bearing block. This means that the gap then does not cut through the bearing block completely, but only partially. The height of the bearing block results from a distance from the bearing side to an underside of the bearing block. The gap is then formed in the bearing block, starting from the bearing side and moving towards the underside. Depending on an expected temperature difference between the bearing side and the underside, the gap can be formed accordingly in proportion to the height. This ensures that cracks due to stress do not form in areas further inside the bearing block.
[0014] Advantageously, the base of the gap can be designed with a radius. This radius can prevent a notch effect from occurring at the base of the gap. The radius can, for example, correspond to half the width of the gap.
[0015] Furthermore, the radius can be formed by a hole whose diameter is larger than the width of the gap. This type of hole can reliably prevent a notch effect at the base of the gap.
[0016] The gap can be continuous around the circumference of the bearing block. Accordingly, the gap can run around the entire circumference of the bearing block, starting from the bearing side, across the adjacent side surface of the bearing block, across a bottom surface to the opposite side surface of the adjacent side surface, and back to the bearing side. The gap does not completely penetrate the bearing block. This can prevent crack formation due to thermal stresses in an external surface of the bearing block. The gap can be formed, for example, by a circumferential saw cut on the bearing block.
[0017] The bearing block can be formed from a first block and a second block, whereby the blocks can be firmly connected to one another by means of an adhesive material. In principle, the bearing block can be formed in one piece. By forming the bearing block from the first block and the second block, which are then glued together, it becomes particularly easy to produce larger bearing blocks. The bearing block can also be formed from a number of blocks > 2, for example 4 or 5 blocks. At the same time, it is possible to glue the aerogel between the first block and the second block. The aerogel can therefore be applied in the gap particularly easily. The blocks can be designed as block halves or also of different sizes.
[0018] The gap can run in a common plane with a glue seam or orthogonal relative to a glue seam of the blocks. For example, the gap can be easily formed by creating a recess in the first block and / or second block adjacent to the glue seam or in its extension. The aerogel can be inserted into the recess and then fills the gap after the first block has been glued to the second block at the glue seam. Alternatively, the glue seam can run orthogonal relative to the gap. For example, at a base of the gap, so that the first block and the second block are connected to each other via a third block. A synthetic resin or glue can be used as an adhesive.
[0019] The bearing block can have at least one connecting means made of synthetic resin-plywood, which connects the first block to the second block, wherein the connecting means can bridge the gap. The connecting means can, for example, be a projection formed within the bearing block, which then forms the gap. The connecting means thus bridges the gap and connects a first block and a second block of the bearing block to one another. Alternatively, the connecting means can also be a plate made of synthetic resin-plywood, which is arranged on the first block and the second block or is glued to them.
[0020] The connecting means can be an extension that is molded onto or inserted into the first block and / or the second block. The extension can be formed through one or both of the blocks and bridge the gap. Alternatively, a recess can be formed in one or both blocks, for example, by milling, into which the extension is inserted. The extension can be bonded to the block(s) using synthetic resin.
[0021] The bearing block can have a plurality of connecting means, wherein the connecting means can be a bolt or a rod. For example, four connecting means arranged symmetrically relative to one another can be arranged between the blocks. The connecting means can be designed in the form of a bolt or a rod and span the gap. In principle, the connecting means can have any cross-section, with a round or square cross-section being particularly easy to form. If the connecting means is a bolt, a bore can be formed in each of the first block and the second block by milling, into which bore the connecting means is inserted and bonded using synthetic resin. In addition to the connecting means, round or square projections or plates can be provided which surround the connecting means and define a width of the gap.Such a plate can be formed independently of the connecting means or can be formed onto it in the form of a collar.
[0022] The ratio of the width of the gap to the thickness of the blocks can be 1:30 to 1:50, with the thickness of the blocks preferably being the same. The gap is then comparatively narrow in relation to the thickness of the blocks, so that the strength of the bearing block is hardly affected by the gap. The width of the gap can be defined, for example, by connecting means. It is also possible to define the width of the gap by inserting plates or projections into the gap. If the thickness of the blocks is the same, it is possible to produce the blocks in large quantities at low cost. If a bearing block is formed from two blocks of this type, the gap always runs through the center of the bearing block. In principle, it is also possible to arrange a number of blocks in such a way that gaps are formed that always run at the same distance from one another through the bearing block.
[0023] The gap can be completely filled with aerogel. This allows the bearing block to form a continuous, sealed surface even in the gap area. Penetration of dirt or water into the gap is then no longer possible.
[0024] The veneer can be maple, birch, or beech, preferably European beech (Fagus silvatica). Compared to, for example, spruce or pine, European beech exhibits advantageous mechanical and electrical properties due to its natural homogeneity and ideal cell structure. However, it is also possible to use spruce, pine, or even hornbeam.
[0025] The resin-coated laminated wood can be completely impregnated with the resin, whereby the resin can be a phenolic resin. The resin can be applied to the veneers before compaction or pressing for bonding. The resin can have a viscosity that allows essentially complete penetration of the resin into the veneers, thus enabling complete impregnation of the resin-coated laminated wood with the resin. For example, complete impregnation can be achieved by vacuum impregnation. In particular, a phenolic resin or a phenol-formaldehyde resole resin glue can be used, whereby the resin-coated laminated wood or veneers can be glued or bonded for optimal protection against delamination.
[0026] Advantageously, the resin-coated wood can contain at least 25% phenolic resin by weight. The phenolic resin is formed by the curing of the phenolic resin in the resin-coated wood. With this phenolic resin content, the resin-coated wood can be formed with sufficient strength properties for use as a bearing block. Water absorption by the resin-coated wood can be essentially eliminated.
[0027] One surface of the bearing block can be coated with synthetic resin. Preferably, the entire bearing block or its surface can be coated with synthetic resin. The bearing block can then be made largely hydrophobic, since the coating of the surface with synthetic resin prevents the penetration of water or liquid into the synthetic resin-coated wood. The surface of the synthetic resin-coated wood and / or the veneers can be processed, in particular sanded and / or planed. This ensures not only the most precise tolerances when synthetic resin-coated wood is used as a material for a bearing block, but also particularly optimal and rapid absorption of synthetic resin. The surface of the bearing block can also be uncoated if the bearing block is completely impregnated with synthetic resin.
[0028] The veneers can be arranged with a parallel, crosswise, or tangential grain direction to the stack, whereby the grain direction can run transversely, orthogonally, or preferably parallel relative to the gap. A tangential grain direction is particularly advantageous for resin-coated wood with a block-shaped geometry, as it can optimize the required bending strength. The choice of a specific grain direction or layer direction also influences the mechanical and thermal insulation properties of the resin-coated wood. Thermal expansion of the resin-coated wood, for example, parallel to a lamination direction or grain direction is many times lower than transverse to a lamination direction or grain direction. A lamination direction or grain direction therefore preferably runs orthogonally or parallel to the bearing side.The grain direction can be vertical and parallel to the gap, or vertical and orthogonal to the gap. This makes it possible to adapt these properties of resin-bonded laminated timber to the structural conditions or requirements by selecting a specific grain direction.
[0029] Furthermore, the resin-coated wood can be manufactured with a density of 0.7 to 0.9 g / cm³, 0.9 to 1.1 g / cm³, 1.2 to 1.35 g / cm³, or 1.35 to 1.4 g / cm³. A specific density can be achieved by selecting a specific densification level of the resin-coated wood. The densification level also influences the mechanical and thermal insulation properties of the resin-coated wood. The density can preferably be 1.4 g / cm³.
[0030] The bearing block assembly can be formed from at least two bearing blocks, wherein the bearing blocks can be firmly connected to one another using a synthetic resin. The bearing block assembly can be designed such that it consists of a plurality of bearing blocks that are bonded together to form an adhesive gap. The adhesive gap can be filled with the synthetic resin in such a way that the penetration of dirt or water into the adhesive gap is prevented and a strong mechanical connection is formed between the bearing blocks.
[0031] The tank according to the invention comprises at least one bearing block according to the invention.
[0032] The tank can have an approximately cylindrical shape or a shape that approximates a spherical shape (Type A, B, or C). The tank can comprise a plurality of differently shaped bearing blocks that allow the tank to be supported or positioned. Furthermore, the tank can be provided with additional insulation, for example, polyurethane foam. The tank can be designed as a fuel tank, storage tank, or transport tank.
[0033] The ship according to the invention has at least one tank according to the invention. The ship can also have a plurality of tanks, each with bearing blocks. The bearing block(s) can be fixed to the tank and / or a structural element of the ship using a casting resin. The casting resin can be used in the form of a filling compound, which serves to connect bearing blocks to one another, to connect bearing blocks to the tank, and / or to connect bearing blocks to structural elements of the ship, in a cargo hold of the ship, to a deck of the ship, and / or to the bottom or side walls of a ship's hull. Depending on the design of the bearing block, it can be designed as a fixed bearing or a loose bearing. It is also possible for a number of bearing blocks to be distributed in a semicircle around a tank or beneath the tank as individual large-format bearing blocks.
[0034] Further advantageous embodiments of a ship emerge from the descriptions of the features of the subclaims referring back to the device claim 1.
[0035] In the method according to the invention for producing a storage block for storing a tank for cryogenic liquids, in particular liquefied petroleum gas, LNG, LPG, ethylene or the like, in a ship, the storage block is formed from synthetic resin compressed wood, wherein veneers are impregnated with a synthetic resin and arranged in a stack, wherein the stack is subsequently compacted at high temperatures to form the synthetic resin compressed wood, wherein the storage block forms a bearing side facing the tank for connection to the tank, wherein a gap is formed in the synthetic resin compressed wood in the bearing side, which runs essentially orthogonal to the bearing side, wherein the gap is filled with an aerogel. For the advantageous effects of the method according to the invention, reference is made to the description of the advantages of the storage block according to the invention.
[0036] Further advantageous embodiments of the method emerge from the descriptions of the features of the subclaims which refer back to device claim 1.
[0037] According to the invention, an aerogel is used to produce a storage block for storing a tank for cryogenic liquids, in particular liquefied petroleum gas, LNG, LPG, ethylene or the like, in a ship, wherein the storage block is formed from the aerogel and synthetic resin compressed wood, wherein veneers are impregnated with a synthetic resin and arranged to form a stack, wherein the stack is subsequently compacted at high temperatures to form the synthetic resin compressed wood, wherein the storage block forms a bearing side facing the tank for connection to the tank, wherein in the bearing side a gap is formed in the synthetic resin compressed wood, which runs substantially orthogonal to the bearing side, wherein the gap is filled with the aerogel.The use of aerogel makes it possible to achieve particularly good thermal separation of the block sections of the bearing block formed by the gap and at the same time to fill the gap flexibly so that no dirt or liquids can penetrate into the gap.
[0038] Further advantageous embodiments of a use of the aerogel emerge from the descriptions of the features of the subclaims referring back to device claim 1.
[0039] The invention is explained in more detail below with reference to the accompanying drawings.
[0040] It shows Fig. 1 a side view of a tank; Fig. 2 a perspective view of a bearing block in a first embodiment; Fig. 3 a perspective view of a bearing block in a second embodiment; Fig. 4 a side view of the bearing block Fig. 3 ; Fig. 5 a front view of the bearing block Fig. 3 ; Fig. 6 a perspective view of a bearing block arrangement; Fig. 7 a perspective view of a bearing block in a third embodiment; Fig. 8 a perspective view of a bearing block in a fourth embodiment; Fig. 9 a cross-sectional view of the bearing block Fig. 8 ; Fig. 10 a longitudinal section view of the bearing block Fig. 8 .
[0041] The Fig. 1 shows, by way of example, a tank 10 that is cylindrical in shape, with bearing blocks 11 and 12. The bearing blocks 11 are essentially semicircular in shape and arranged coaxially with a longitudinal axis 13 of the tank 10. The bearing blocks 11 form fixed bearings 14, which are intended to prevent the tank 10 from slipping in the direction of the longitudinal axis 13 or from rotating the tank 10 relative to the longitudinal axis 13. The bearing blocks 12 prevent the tank 10 from floating transversely to the longitudinal axis 13. The tank 10 serves to hold a cryogenic liquid, such as liquefied gas or the like.
[0042] The Fig. 2 shows a bearing block 15 made from impregnated synthetic resin compressed wood. The synthetic resin compressed wood is made from veneers (not shown here) that are impregnated with a synthetic resin and arranged in a stack, the stack then being compressed at high temperatures to form the synthetic resin compressed wood. The bearing block 15 is a bearing block such as is used, for example, in type A tanks. The bearing block 15 forms a base 16 for resting on a substrate. A tank (not shown in detail here) can be placed on a bearing side 17 of the bearing block 15. A gap 18 is formed in the synthetic resin compressed wood within the bearing side 17. The gap 18 runs orthogonally to the bearing side 17 through the bearing block 15. The gap 18 is completely filled with an aerogel 19.In particular, the gap 18 extends from a side surface 20 adjacent to the bearing side 17 to an opposite side surface 21 of the bearing block 15 adjacent to the bearing side 17.
[0043] A summary of the Fig. 3 bis 5 shows a further bearing block 22 which can form a fixed bearing for a tank (not shown here). The bearing block 22 is formed from a first block 23 and a second block 24, wherein the blocks 23 and 24 are firmly connected to one another by means of an adhesive material (not shown in detail here). The first block 23 and the second block 24 are made of synthetic resin pressed wood and are glued to one another along an adhesive seam 25. The bearing block 22 forms a bearing side 26 for supporting the tank (not shown here), wherein a groove 27 is formed in the bearing side 26 which can accommodate a rib or a sword (not shown in detail here) located on an outer side of the tank. Furthermore, a gap 28 is formed in the bearing side 26 which is essentially aligned with the adhesive seam 25 and runs orthogonally to the bearing side 26. At a bottom 29 of the gap 28, a bore 30 runs through the bearing block 22.This prevents a notch effect in the base 29 due to the gap 28. The gap 28 is further completely filled with an aerogel 31. Veneer layers 32 of the resin-coated wood, shown here only in outline, can run transversely, longitudinally, or parallel to the gap 28.
[0044] The Fig. 6 shows a bearing block arrangement 33, which is composed of a plurality of blocks 34 and 35. The blocks 34 and 35 are glued together and form a, as under Fig. 3 bis 5 described bearing block 22. An aerogel 31 is arranged within a gap 37 extending orthogonally to a bearing side 36. Pairs 39 of blocks 34 and 35 are now arranged in a row, forming an adhesive gap 40, wherein the further adhesive gap 40 is completely filled with a synthetic resin 38 and thus firmly connects the blocks 34 and 35 of adjacent bearing blocks 22.
[0045] The Fig. 7 shows a bearing block 41 which forms a loose bearing 42 for a tank not shown in detail here. The bearing block 41 is formed from an upper block 43 and a lower block 44 with an intermediate plate 45 made of stainless steel. The upper block 43 and the lower block 44 are movable relative to one another along the plate 45. The lower block 44 forms a base 46 for resting on a substrate and the upper block 43 forms a bearing side 47 for supporting the tank. Within the bearing side 47, a gap 48 is formed which runs between side surfaces 49 and 50 of the upper block 43. The gap 48 is completely filled with an aerogel 51.
[0046] The Fig. 8shows a bearing block 52 that can form a fixed bearing for a tank (not shown here). The bearing block 52 is formed from a first block 53 and a second block 54, wherein the first block 53 is connected to the second block 54 via bolts 55 made of synthetic resin pressed wood. The bolts 55 are inserted into recesses 56, which are formed by milling in the first block 53 and the second block 54, and are glued together using synthetic resin. The bolts 55 are surrounded by plates 57, which determine a distance between the first block 53 and the second block 54 and thus form a gap 58. The gap 58 thus runs over the entire circumference of the bearing block 52. The plates 57 are also glued to the first block 53 and the second block 54 using synthetic resin. The gap 58 thus formed is filled with an aerogel 59.It should also be noted that the embodiments of bearing blocks shown in the preceding figures can be designed in the manner of the bearing block 52 with a circumferential gap 58.
Claims
1. A bearing block (11, 12, 22, 41, 52) for storing a tank (10) for cryogenic liquids, in particular liquefied gas, LNG, LPG, ethylene or the like, in a ship, the bearing block being formed by densified laminated wood, the densified laminated wood being formed by veneers (32) which are impregnated with a synthetic resin and are stacked, the stack subsequently being densified at high temperatures for forming the densified laminated wood, the bearing block forming a bearing side (17, 26, 36, 47), which faces the tank, in order to be connected to the tank, characterized in that a gap (18, 28, 48, 58) which essentially extends orthogonally to the bearing side is formed in the bearing side of the densified laminated wood, the gap being filled with an aerogel (19, 31, 51, 59).
2. The bearing block according to claim 1, characterized in that the gap (18, 28, 48, 58) is formed so as to extend from a lateral surface (20, 49) of the bearing block (11, 12, 22, 41, 52) adjoining the bearing side (17, 26, 36, 47) to an opposite lateral surface (21, 50) of the bearing block adjoining the bearing side.
3. The bearing block according to claim 1 or 2, characterized in that the gap penetrates sections of the bearing block (11, 12, 22, 41), preferably as deep as 20 %, 35 %, 50 % or 70 % of a height of the bearing block.
4. The bearing block according to any one of the preceding claims, characterized in that a bottom (29) of the gap (18, 28, 48) is formed so as to have a radius.
5. The bearing block according to claim 4, characterized in that the radius is formed by a hole (30) whose diameter is larger than a width of the gap (18, 28, 48).
6. The bearing block according to claim 1 or 2, characterized in that the gap (58) is formed so as to extend continuously over a circumference of the bearing block (52).
7. The bearing block according to any one of the preceding claims, characterized in that the bearing block (11, 12, 22, 41, 52) is formed by a first block (23, 34, 53) and a second block (24, 35, 54), the blocks being firmly connected to each other by means of an adhesive material.
8. The bearing block according to claim 7, characterized in that the gap (18, 28, 48) extends in a shared plane with an adhesive seam (25) or orthogonally relative to an adhesive seam of the blocks.
9. The bearing block according to claim 7 or 8, characterized in that the bearing block (52) has at least one connecting means which is made of densified laminated wood and which connects the first block (53) to the second block (54), the connecting means bridging the gap (58).
10. The bearing block according to claim 9, characterized in that the connecting means is an extension which is formed on or inserted in the first block (53) and / or the second block (54).
11. The bearing block according to claim 9 or 10, characterized in that the bearing block (52) has a plurality of connecting means, the connecting means being a bolt (55) or a rod.
12. The bearing block according to any one of the claims 6 to 11, characterized in that a ratio of a width (S) of the gap (18, 28, 48, 58) to a thickness (B) of the blocks (35, 34, 53, 54) is 1 : 30 to 1 : 50, the thickness of the blocks preferably being of equal size.
13. The bearing block according to any one of the preceding claims, characterized in that the gap (18, 28, 37, 48, 58) is fully filled with the aerogel (19, 31, 51, 59).
14. The bearing block according to any one of the preceding claims, characterized in that the veneer is maple wood, birch wood or beech wood, preferably European beech wood.
15. The bearing block according to any one of the preceding claims, characterized in that the densified laminated wood is fully impregnated with the synthetic resin, the synthetic resin being a phenol resin.
16. The bearing block according to claim 15, characterized in that the densified laminated wood has at least 25 percent by weight of phenol formaldehyde resin.
17. The bearing block according to any one of the preceding claims, characterized in that the veneers (32) are disposed so as to have a parallel, crisscrossed or tangential grain direction to the stack, the grain direction extending transversely, orthogonally or preferably parallel relative to the gap (18, 28, 48, 58).
18. The bearing block according to any one of the preceding claims, characterized in that the densified laminated wood has a density of 0.7 g / cm3 to 0.9 g / cm3, 0.9 g / cm3 to 1.1 g / cm3, 1.2 g / cm3 to 1.35 g / cm3 or 1.35 g / cm3 to 1.4 g / cm3.
19. A bearing block arrangement according to any one of the preceding claims, characterized in that the bearing block arrangement (33) is formed by at least two bearing blocks (22), the bearings blocks being firmly connected to each other by means of a synthetic resin.
20. A tank (10) having at least one bearing block (11, 12, 22, 41, 52) according to any one of the preceding claims.
21. A ship having at least one tank (10) according to claim 20.
22. A method for producing a bearing block (11, 12, 22, 41, 52) for storing a tank (10) for cryogenic liquids, in particular liquefied gas, LNG, LPG, ethylene or the like, in a ship, the bearing block being formed by densified laminated wood, the veneers (32) being impregnated with a synthetic resin and being stacked, the stack subsequently being densified at high temperatures for forming the densified laminated wood, the bearing block forming a bearing side (17, 26, 36, 47), which faces the tank, in order to be connected to the tank, characterized in that a gap (18, 28, 48, 58) which essentially extends orthogonally to the bearing side is formed in the bearing side of the densified laminated wood, the gap being filled with an aerogel (19, 31, 51, 59).
23. A use of an aerogel (19, 31, 51, 59) for producing a bearing block (11, 12, 22, 41, 52) for storing a tank (10) for cryogenic liquids, in particular liquefied gas, LNG, LPG, ethylene or the like, in a ship, the bearing block being formed by the aerogel and densified laminated wood, veneers (32) being impregnated with a synthetic resin and being stacked, the stack subsequently being densified at high temperatures for forming the densified laminated wood, the bearing block forming a bearing side (17, 26, 36, 47), which faces the tank, in order to be connected to the tank, a gap (18, 28, 48, 58) which essentially extends orthogonally to the bearing side being formed in the bearing side of the densified laminated wood, the gap being filled with the aerogel (19, 31, 51, 59).
Citation Information
Patent Citations
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