A corrugated structure for preventing deformation

Abstract

The present application relates to liquefied natural gas transportation technical field, specifically to a kind of corrugated structure for preventing deformation, comprising: corrugated board assembly, corrugated board assembly includes the first corrugated board and the second corrugated board of stacked arrangement, glue board is equipped between the first corrugated board and the second corrugated board, wherein, the first corrugated board and the second corrugated board both have two arc convex, and two arc convex staggered arrangement, and form flower node at intersection position;Supporting piece, it is set between the first corrugated board and the second corrugated board, and each supporting piece respectively with the arc convex of first corrugated board and second corrugated board contact;Connecting piece, it is set at the corresponding flower node of first corrugated board and second corrugated board, for connecting first corrugated board and second corrugated board and keeping flower node interval arrangement.

Description

Technical Field

[0001] This invention relates to the field of liquefied natural gas transportation technology, and in particular to a corrugated structure for preventing deformation. Background Technology

[0002] As a clean and efficient energy source, liquefied natural gas (LNG) is playing an increasingly important role in the global energy structure. LNG carriers, as special vessels designed specifically for transporting LNG, need to transport LNG at extremely low temperatures (typically -162°C). This requires the hull structure to not only have good low-temperature performance but also sufficient strength and stability to cope with the complex marine environment.

[0003] During their voyages, LNG carriers are continuously subjected to marine environmental factors such as waves, tides, and currents. Waves possess immense energy, and their periodic impacts exert enormous dynamic loads on the corrugated panels of the hull. When waves crash against the corrugated panels, the wave-like structure causes stress concentration at critical points such as wave crests and troughs. Prolonged exposure to this alternating stress leads to fatigue damage in the corrugated panel material, gradually resulting in plastic deformation.

[0004] In many corrugated structures of LNG carriers, multiple corrugated plates are often used in combination to meet specific design requirements or improve the overall performance of the structure. However, most existing combinations involve two corrugated plates in direct contact. When the ship vibrates or moves relative to each other under external forces during navigation, friction occurs between the surfaces of the two directly contacting corrugated plates. This friction not only consumes additional energy and reduces the overall efficiency of the ship, but also causes wear on the surface of the corrugated plates.

[0005] When LNG carriers are subjected to strong impacts from seawater, collisions, or other external forces, the stability of their corrugated structures is often difficult to guarantee. The enormous impact force generated by a collision can cause severe deformation and vibration of the hull structure. At this time, the corrugated structure may not be able to quickly and effectively disperse and transmit these impact forces, leading to localized stress concentration, which in turn can cause structural damage and result in a large-scale leak of liquefied natural gas.

[0006] Therefore, this application develops a corrugated structure to prevent deformation, in order to solve the problems existing in the prior art. Summary of the Invention

[0007] The purpose of this invention is to provide a corrugated structure that prevents deformation, so as to solve the problem of insufficient stability of corrugated plates in the prior art when transporting natural gas.

[0008] The technical solution of this invention is: a corrugated structure for preventing deformation, comprising:

[0009] A corrugated plate assembly, comprising a first corrugated plate and a second corrugated plate stacked together, with plywood between the first corrugated plate and the second corrugated plate, wherein both the first corrugated plate and the second corrugated plate have two arc-shaped protrusions, and the two arc-shaped protrusions are staggered and form a knot at the intersection.

[0010] A support member is disposed between the first corrugated plate and the second corrugated plate, and each of the support members is in contact with the arc-shaped protrusions of the first corrugated plate and the second corrugated plate respectively;

[0011] A connector is disposed at the corresponding joint of the first corrugated plate and the second corrugated plate, for connecting the first corrugated plate and the second corrugated plate and maintaining the joint spacing.

[0012] Preferably, the support member has a first contact surface and a second contact surface. When the first corrugated plate and the second corrugated plate are installed, the first contact surface is in contact with the outer wall surface of the first corrugated plate, and the second contact surface is in contact with the inner wall surface of the second corrugated plate.

[0013] Preferably, the first contact surface and the second contact surface form a first mating portion at the bend, and the two curved protrusions each form a second mating portion that matches the shape of the first mating portion. When the first corrugated plate and the second corrugated plate are installed, the first mating portion and the second mating portion are embedded and fitted together.

[0014] Preferably, each of the support members has a limiting part on its second contact surface, and the arc-shaped protrusion has a limiting hole. When the second corrugated plate is installed, the limiting part passes through the limiting hole to position the support member and the second corrugated plate and to apply a preload to the second corrugated plate.

[0015] Preferably, the limiting part includes a contraction part and a pressing part. The contraction part is fixedly connected to the support member. The pressing part is disposed at the end of the contraction part away from the support member and moves along the radial direction of the contraction part to change the radial dimension of the limiting part. The pressing part has a contact surface close to the second contact surface, and the contact surface is adapted to the second contact surface of the support member to achieve stability of the corrugated assembly.

[0016] Preferably, there are two pressing parts, which are symmetrical about the central axis of the contraction part. The two pressing parts extend in opposite directions and are both parallel to the extension direction of the arc-shaped protrusion.

[0017] Preferably, the support member has an abutment portion, and a plurality of abutment rods are provided between the abutment portion and the plywood. The plurality of abutment rods are symmetrically distributed relative to the center of the abutment portion. The fixed end of the abutment rod is fixed to the plywood, and the free end is hinged to the abutment portion. Furthermore, the abutment rod is inclined relative to the plywood.

[0018] Preferably, the fixed end of the abutment rod is located on the plywood away from its center line of symmetry, so that the openings of the two symmetrical abutment rods face the plywood.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) Multiple support members are set to contact the arc protrusion of the corrugated plate to provide additional support force. Furthermore, the first contact surface prevents the first corrugated plate from expanding excessively outward, and the second contact surface prevents the second corrugated plate from contracting excessively inward, forming a rigid constraint system to avoid excessive local stress concentration and effectively limit the deformation of the corrugated plate.

[0021] (2) The shrinkage part shrinks at ultra-low temperature, further pressing the second corrugated plate to prevent gaps from affecting the support effect and stability, and to avoid increasing the deformation;

[0022] (3) The abutment part is connected to the plywood by multiple inclined and centrally symmetrically distributed abutment rods. The free end of the abutment rod is hinged to the abutment part, and the fixed end is in the area of ​​the plywood away from the center line of symmetry. When the plywood shrinks at ultra-low temperature, the fixed end of the abutment rod moves to generate axial force, which makes the support closer to the first corrugated plate. The clamping part makes the second corrugated plate closer to the support, ensuring that the corrugated plate structure is tightly connected at ultra-low temperature and under impact, preventing large deformation and ensuring overall stability. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of the corrugated structure for preventing deformation according to the present invention;

[0025] Figure 2 for Figure 1 Enlarged diagram of A in the middle;

[0026] Figure 3 This is a schematic diagram of the structure of the first corrugated plate of the present invention;

[0027] Figure 4 This is a side view of a corrugated structure for preventing deformation according to the present invention;

[0028] Figure 5 This is a top view of a corrugated structure for preventing deformation according to the present invention.

[0029] The components include: 1. Corrugated plate assembly; 11. First corrugated plate; 12. Second corrugated plate; 13. Arc-shaped protrusion; 131. Limiting hole; 14. Floral joint; 2. Plywood; 3. Support component; 31. First contact surface; 32. Second contact surface; 33. First mating part; 34. Second mating part; 35. Limiting part; 351. Shrinking part; 352. Pressing part; 36. Abutting part; 37. Abutting rod; 4. Connecting component. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments:

[0031] like Figures 1-3 As shown, a corrugated structure for preventing deformation includes a corrugated plate assembly 1, a support member 3, and a connector 4. The corrugated plate assembly 1 is formed by stacking a first corrugated plate 11 and a second corrugated plate 12, with a plywood 2 sandwiched between the first corrugated plate 11 and the second corrugated plate 12. The first corrugated plate 11 and the second corrugated plate 12 have the same structure, each having two intersecting and perpendicularly arranged arc-shaped protrusions 13, forming a knot 14 at the intersection. This structure allows the stress of the corrugated plate to be more evenly distributed when it is under force. In this embodiment, four support members 3 are provided between the first corrugated plate 11 and the second corrugated plate 12, and connecting members 4 are provided at the corresponding knots 14 of the first corrugated plate 11 and the second corrugated plate 12. Each support member 3 is in contact with the arc-shaped protrusions 13 of the first corrugated plate 11 and the second corrugated plate 12, providing additional support for the corrugated plate and enhancing the stability of the entire structure. The main function of the connecting member 4 is to prevent relative movement between the first corrugated plate 11 and the second corrugated plate 12, which would cause friction between the metals.

[0032] In practical applications, when LNG carriers are impacted by waves during navigation, the support component 3 can effectively resist the bending and torsional deformation of the corrugated plate, ensuring the stability of the hull structure. The connector 4 prevents relative misalignment between the first corrugated plate 11 and the second corrugated plate 12, avoiding the aggravation of deformation caused by structural loosening, and ensuring the stability of the corrugated structure during long-term use.

[0033] In this embodiment, as Figure 3As shown, the support member 3 has a first contact surface 31 and a second contact surface 32. During the installation of the first corrugated plate 11 and the second corrugated plate 12, the support member 3 is placed between them. At this time, the first contact surface 31 will be tightly attached to the outer wall surface of the first corrugated plate 11, and the second contact surface 32 will be tightly attached to the inner wall surface of the second corrugated plate 12. The tight attachment ensures a stable and reliable connection between the support member 3 and the corrugated plate, providing strong support for the entire corrugated structure. At the same time, it can avoid excessive stress concentration in local areas and prevent damage to the corrugated plate or the support member 3 due to excessive local stress, greatly enhancing the support stability of the entire corrugated structure. During the voyage of the LNG carrier, the ship body is subjected to periodic impacts from the waves, generating a large dynamic load. When the corrugated structure is subjected to external forces, the first corrugated plate 11 and the second corrugated plate 12 will have corresponding deformation tendencies. The support member 3, through the tight attachment of the first contact surface 31 and the second contact surface 32 to the corrugated plate, can effectively limit the deformation of the corrugated plate. Specifically, the first contact surface 31 prevents the first corrugated plate 11 from expanding and deforming excessively outward, and the second contact surface 32 prevents the second corrugated plate 12 from contracting and deforming excessively inward. The two work together to form a rigid constraint system.

[0034] Furthermore, the first contact surface 31 and the second contact surface 32 form a first mating portion 33 at the bending position. Simultaneously, the two arc-shaped protrusions 13 also form second mating portions 34 at the bending points, each matching the shape of the first mating portion 33. During the installation of the first corrugated plate 11 and the second corrugated plate 12, the first mating portions 33 and the second mating portions 34 will achieve an embedded fit. Compared to traditional simple contact or point connection methods, the large-area embedded fit makes the connection between the support member 3 and the corrugated plate more robust and reliable. When subjected to significant external forces, the embedded fit structure can effectively resist the pulling and separation of external forces, preventing loosening or detachment between the support member 3 and the corrugated plate, thereby ensuring the integrity and stability of the entire corrugated structure.

[0035] like Figures 1-3 As shown, in the anti-deformation corrugated structure, each support member 3 has a limiting part 35 on its second contact surface 32. The arc protrusion 13 on the second corrugated plate 12 has a corresponding limiting hole 131. When the second corrugated plate 12 is installed, the limiting part 35 will accurately pass through the limiting hole 131, realizing the precise positioning of the support member 3 and the second corrugated plate 12. During the installation process, the operator does not need to spend a lot of time on repeated debugging and calibration. He only needs to align the limiting part 35 with the limiting hole 131 and insert it to quickly and accurately install the corrugated plate mechanism.

[0036] Specifically, the limiting part 35 includes a contraction part 351 and a pressing part 352. The contraction part 351 is fixedly connected to the support member 3. The pressing part 352 is located at the end of the contraction part 351 away from the support member 3 and has the ability to move in the radial direction along the contraction part 351, so that the pressing part 352 can change the radial dimension of the entire limiting part 35, thereby achieving flexible adjustment of installation and fixation. By applying force to the pressing part 352, the pressing part 352 is contracted, so that the limiting part 35 can pass through the limiting hole 131 and the second corrugated plate 12 is installed on the first corrugated plate 11. After installation, the pressing part 352 is pulled out, or a spring is set in the contraction part 351 and connected to one end of the pressing part 352. By the rebound force of the spring, the pressing part 352 is ejected, thereby restricting the second corrugated plate 12. In addition to the movement of the compression part 352, the compression part 352 is also provided with a contact surface close to the second contact surface 32. The shape and size of the contact surface are adapted to the second contact surface 32 and are tightly fitted to the second contact surface 32. In actual application, because the temperature of the transported liquid natural gas is -163℃, it is always in an ultra-low temperature state. The contraction part 351 will contract in the ultra-low temperature environment. Since the compression part 352 is tightly fitted to the second corrugated plate 12, the contraction of the contraction part 351 will further compress the second corrugated plate 12, preventing gaps from appearing between the second corrugated plate 12 and the support member 3 due to the contraction of other structures in the ultra-low temperature environment. This would reduce the support effect of the second corrugated plate 12, affect its stability, and increase the deformation when the first corrugated plate 11 and the second corrugated plate 12 are impacted.

[0037] Furthermore, two clamping parts 352 are provided. The two clamping parts 352 are distributed oppositely about the central axis of the contraction part 351 and extend in opposite directions. The extension directions of the two clamping parts 352 are parallel to the extension direction of the arc protrusion 13 on the second corrugated plate 12. This allows the clamping parts 352 to apply force to the second corrugated plate 12 from two opposite directions when they cooperate with it. Since the extension directions of the two clamping parts 352 are parallel to the extension direction of the arc protrusion 13, when subjected to force, the force can be evenly distributed along the direction of the arc protrusion 13 to the entire corrugated structure, thereby avoiding stress concentration in local areas and reducing structural fatigue damage and failure caused by stress concentration.

[0038] like Figures 4-5As shown, to make the support member 3 fit more closely to the first corrugated plate 11 and to make the overall structure more stable, the support member 3 is provided with an abutment part 36. The abutment part 36 and the plywood 2 are connected by multiple abutment rods 37, and the multiple abutment rods 37 are relatively symmetrically distributed with the center of the abutment part 36 as the symmetrical point. Specifically, the fixed end of the abutment rod 37 is firmly fixed to the plywood 2, and its free end is connected to the abutment part 36 by a hinge. Furthermore, the abutment rod 37 is not set perpendicular to the plywood 2, but is inclined relative to the plywood 2. Meanwhile, the fixed end of the abutment rod 37 is positioned on the plywood 2 in a region far from the center line of symmetry of the plywood 2, creating an opening between the two symmetrical abutment rods 37, with the opening facing the plywood 2. In practical applications, because the plywood 2 will shrink towards its center in ultra-low temperature environments, and because the edge of the plywood 2 has a larger range of movement, the fixed end of the abutment rod 37, located far from the center line of symmetry of the plywood 2, will move towards the center as the plywood 2 shrinks, causing the abutment rod 37 to rotate around its free end. When the fixed end of the abutment rod 37 moves, a force along the axial direction of the abutment rod 37 will act on the abutment part 36, thereby exerting a force on the support member 3, causing the support member 3 to move closer to the first corrugated plate 11. At the same time, the second corrugated plate 12 also moves closer to the support member 3 under the action of the pressing part 352. With the cooperation of the abutment rod 37 and the pressing part 352, the entire corrugated plate structure remains tightly connected even in ultra-low temperature environments and under impact, preventing large deformation and ensuring overall stability.

[0039] The above embodiments are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

Claims

1. A corrugated structure for preventing deformation, characterized in that, include: A corrugated plate assembly (1) includes a first corrugated plate (11) and a second corrugated plate (12) stacked together. A plywood (2) is provided between the first corrugated plate (11) and the second corrugated plate (12). The first corrugated plate (11) and the second corrugated plate (12) each have two arc-shaped protrusions (13), and the two arc-shaped protrusions (13) are staggered and form a flower knot (14) at the intersection. Support member (3) is disposed between the first corrugated plate (11) and the second corrugated plate (12), and each support member (3) is in contact with the arc protrusion (13) of the first corrugated plate (11) and the second corrugated plate (12); A connector (4) is provided at the flower joint (14) corresponding to the first corrugated plate (11) and the second corrugated plate (12) for connecting the first corrugated plate (11) and the second corrugated plate (12) and keeping the flower joint (14) spaced apart; The support member (3) has a first contact surface (31) and a second contact surface (32). Each support member (3) has a limiting part (35) on its second contact surface (32). The arc protrusion (13) has a limiting hole (131). When the second corrugated plate (12) is installed, the limiting part (35) passes through the limiting hole (131) to position the support member (3) and the second corrugated plate (12) and to apply a preload to the second corrugated plate (12). The limiting part (35) includes a shrinking part (351) and a pressing part (352). The shrinking part (351) is fixedly connected to the support member (3). The pressing part (352) is disposed at one end of the shrinking part (351) away from the support member (3) and moves along the radial direction of the shrinking part (351) to change the radial dimension of the limiting part (35). The pressing part (352) has a contact surface close to the second contact surface (32). The contact surface is adapted to the second contact surface (32) of the support member (3) to achieve the stability of the corrugated assembly.

2. The corrugated structure for preventing deformation according to claim 1, characterized in that: When the first corrugated plate (11) and the second corrugated plate (12) are installed, the first contact surface (31) is in contact with the outer wall surface of the first corrugated plate (11), and the second contact surface (32) is in contact with the inner wall surface of the second corrugated plate (12).

3. The corrugated structure for preventing deformation according to claim 2, characterized in that: The first contact surface (31) and the second contact surface (32) form a first mating part (33) at the bend, and the two arc protrusions (13) each form a second mating part (34) at the bend that matches the shape of the first mating part (33). When the first corrugated plate (11) and the second corrugated plate (12) are installed, the first mating part (33) and the second mating part (34) are embedded and fitted together.

4. The corrugated structure for preventing deformation according to claim 1, characterized in that: Two pressing parts (352) are provided and are symmetrical about the central axis of the contraction part (351). The two pressing parts (352) extend in opposite directions and are both parallel to the extension direction of the arc protrusion (13).

5. The corrugated structure for preventing deformation according to claim 1, characterized in that: The support member (3) has an abutment portion (36), and a plurality of abutment rods (37) are provided between the abutment portion (36) and the plywood (2). The plurality of abutment rods (37) are symmetrically distributed relative to the center of the abutment portion (36). The fixed end of the abutment rod (37) is fixed on the plywood (2), and the free end is hinged to the abutment portion (36). Furthermore, the abutment rod (37) is inclined relative to the plywood (2).

6. The corrugated structure for preventing deformation according to claim 5, characterized in that: The fixed end of the abutment rod (37) is located on the plywood (2) away from its center line of symmetry, so that the opening direction of the two symmetrical abutment rods (37) faces the plywood (2).

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