Corner structure and manufacturing method for membrane-type enclosure systems, enclosure system

Abstract

This invention provides a corner structure and manufacturing method for a membrane-type enclosure system, as well as the enclosure system itself. The corner structure for a membrane-type enclosure system provided by this invention includes a main shielding layer, a main insulation layer, a secondary shielding layer, and a secondary insulation layer arranged sequentially from the inside out. The main shielding layer includes a main shielding plate and a corner main corrugated plate. The secondary shielding layer includes a secondary shielding plate and a corner secondary corrugated plate. The secondary shielding plate includes a first plate and a second plate integrally connected to each other. The corner secondary corrugated plate is disposed between the two secondary shielding plates. The main insulation layer includes a first insulation block and a second insulation block, and the secondary insulation layer includes a third insulation block and a fourth insulation block. In this invention, the main shielding layer and the secondary shielding layer are independent shielding layers and are not integrally connected by connectors. Therefore, in principle, the conduction of cold energy through connectors is avoided, effectively improving the thermal insulation performance of the corner area of ​​the membrane-type enclosure system.

Description

Technical Field

[0001] This invention relates to the field of liquid cargo membrane storage tank technology, specifically to the corner structure and manufacturing method of a membrane-type enclosure system, and the enclosure system itself. Background Technology

[0002] Membrane containment systems are enclosure structures used in liquefied natural gas (LNG) storage tanks and transport vessels to hold LNG. There are various types of membrane containment systems, including different types of corner enclosures. One typical corner enclosure arrangement involves the upper and lower metal plates being integrally connected via supports.

[0003] However, this solution has the following drawbacks: since the upper metal plate and the lower metal plate are connected as a whole through the support, the cold energy will be conducted from the support to the lower metal plate, resulting in poor overall thermal insulation performance of the membrane enclosure system.

[0004] Although existing technologies such as CN118623202B and CN119267778B have attempted to avoid this problem by thickening the second insulation layer, the effect is still not ideal, and the thermal insulation effect of the corner structure of the thin-film enclosure system still needs to be further improved. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a corner structure and manufacturing method for a membrane-type enclosure system, as well as the enclosure system itself.

[0006] According to the present invention, a corner structure for a membrane-type enclosure system includes a main shielding layer, a main insulation layer, a secondary shielding layer, and a secondary insulation layer arranged sequentially from the inside to the outside.

[0007] The main shielding layer includes a main shielding plate and a corner corrugated plate; the main shielding plate includes a first main board and a second main board that are integrally connected to each other, and the first included angle between the first main board and the second main board is greater than 0° and less than 180°; the corner corrugated plate is disposed between the two main shielding plates.

[0008] The secondary shielding layer includes a secondary shielding plate and a corner corrugated plate; the secondary shielding plate includes a first plate and a second plate integrally connected to each other, with a second included angle between the first plate and the second plate; the corner corrugated plate is disposed between the two secondary shielding plates;

[0009] The main insulation layer includes a first insulation block and a second insulation block, with a first gap between the first insulation block and the second insulation block; and a third included angle between the first insulation block and the second insulation block.

[0010] The secondary insulation layer includes a third insulation block and a fourth insulation block, and there is a second gap between the third insulation block and the fourth insulation block; there is a fourth included angle between the third insulation block and the fourth insulation block.

[0011] The first included angle, the second included angle, the third included angle, and the fourth included angle are the same.

[0012] Preferably, the main corrugated plate in each corner area is welded between two main shielding plates; and the secondary corrugated plate in each corner area is welded between two secondary shielding plates.

[0013] Preferably, the spacing between the main corrugated plates in adjacent corner areas is smaller than the distance between the secondary corrugated plates in adjacent corner areas.

[0014] Preferably, the ratio of the spacing between the main corrugated plates in adjacent corner areas to the distance between the secondary corrugated plates in adjacent corner areas is 2:3.

[0015] Preferably, the corner corrugated plate includes a first type of corrugated plate and / or a second type of corrugated plate;

[0016] The secondary insulation layer includes multiple secondary insulation boxes, and there is a third gap between adjacent secondary insulation boxes;

[0017] The first type of secondary corrugated plate is located in the middle of the secondary insulation box, and the second type of secondary corrugated plate is located on both sides of the secondary insulation box and spans two adjacent secondary insulation boxes.

[0018] Preferably, the corrugations of the corner secondary corrugated plate face inward; a receiving groove is provided on the outer side of the main insulation layer to receive the corrugations of the corner secondary corrugated plate.

[0019] Preferably, the corrugated protrusions of the main corrugated plate in the corner area face inward, and a gap is provided on the inner side of the main insulation layer; the position of the gap corresponds to the corrugated protrusions of the main corrugated plate in the corner area.

[0020] Preferably, a reinforcing layer is provided inside the main insulation layer, and the reinforcing layer is located on the outside of the gap.

[0021] Preferably, the main insulation layer comprises, from the inside out, a support plate, an insulation material, and another support plate; the secondary insulation layer comprises, from the inside out, a support plate, an insulation material, and another support plate.

[0022] Preferably, it also includes a connecting plate;

[0023] The main insulation layer includes multiple main insulation boxes;

[0024] The connecting plate is located in the gap between adjacent main insulation boxes and is used to connect the main shielding plate at the edge of the adjacent main insulation box.

[0025] Preferably, the main insulation layer is provided with a main layer fixing hole on the support plate located outside the insulation material, the main layer fixing hole is used to accommodate the anchoring structure; the anchoring structure is used to connect the main insulation layer and the secondary shielding plate; the anchoring structure does not contact the main shielding plate.

[0026] Preferably, among the multiple main insulation boxes, some are first main insulation boxes and others are second main insulation boxes, and the first and second main insulation boxes are arranged alternately in sequence; the length of the secondary insulation box is greater than the length of the first main insulation box, and the length of the first main insulation box is greater than the length of the second main insulation box.

[0027] A method for manufacturing a corner structure according to the present invention, used to manufacture the corner structure for a membrane enclosure system, further includes the following steps:

[0028] Step 1: Prefabricate the secondary insulation layer with the secondary shielding plate and the primary insulation layer with the primary shielding plate in the factory.

[0029] Step 2: At the construction site of the membrane enclosure system, install the secondary insulation layer with the secondary shielding plate onto the outer shell of the membrane enclosure system.

[0030] Step 3: Weld the corner corrugated plates between adjacent secondary shielding plates to form a secondary shielding layer;

[0031] Step 4: Install the main insulation layer with the main shielding plate on the secondary shielding layer;

[0032] Step 5: Weld the corner corrugated plates between all or part of the adjacent main shielding plates to form the main shielding layer.

[0033] According to the present application, an enclosure system is provided, which adopts the corner structure for a membrane-type enclosure system.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. In this invention, the main shielding layer and the secondary shielding layer are independent shielding layers and are not connected by a connector. Therefore, in principle, the conduction of cold energy through the connector is avoided, which effectively improves the thermal insulation performance of the corner area of ​​the membrane enclosure system.

[0036] 2. In this invention, the corrugation spacing of the secondary shielding layer is greater than that of the primary shielding layer, which reduces the number of corrugations in the secondary shielding layer and achieves the technical effect of reducing processing workload and improving the construction efficiency of the membrane enclosure system. Attached Figure Description

[0037] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of the structure of the present invention;

[0039] Figure 2 This is an enlarged view of a partial structure of the present invention;

[0040] Figure 3 for Figure 1 The main view;

[0041] Reference numerals: 1. Main shielding layer; 2. Main insulation layer; 3. Secondary shielding layer; 4. Secondary insulation layer; 11. Main shielding plate; 12. Corner area main corrugated plate; 21. First insulation block; 22. Second insulation block; 23. First gap; 24. Receiving groove; 25. Gap; 26. Reinforcing layer; 27. Support plate; 28. Insulation material; 31. Secondary shielding plate; 32. Corner area secondary corrugated plate; 41. Third insulation block; 42. 43. Fourth insulation block; 44. Second gap; 45. Secondary insulation box; 111. First main board; 112. Second main board; 113. Connecting plate; 201. First main insulation box; 202. Second main insulation box; 203. Main layer fixing hole; 204. Secondary layer fixing hole; 311. First plate; 312. Second plate; 321. First type secondary corrugated plate; 322. Second type secondary corrugated plate. Detailed Implementation

[0042] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0043] This invention provides a corner structure for a membrane enclosure system, comprising a main shielding layer 1, a main insulation layer 2, a secondary shielding layer 3, and a secondary insulation layer 4 arranged sequentially from the inside to the outside.

[0044] The main shielding layer 1 includes a main shielding plate 11 and a corner corrugated plate 12; the main shielding plate 11 includes a first main plate 111 and a second main plate 112 integrally connected to each other, and the first included angle between the first main plate 111 and the second main plate 112 is greater than 0° and less than 180°; the corner corrugated plate 12 is disposed between the two main shielding plates 11; preferably, each corner corrugated plate 12 is welded between the two main shielding plates 11, and the first included angle can be 90 degrees or 135°.

[0045] The secondary shielding layer 3 includes a secondary shielding plate 31 and a corner secondary corrugated plate 32. The secondary shielding plate 31 includes a first plate 311 and a second plate 312 integrally connected to each other, with a second included angle between the first plate 311 and the second plate 312. The corner secondary corrugated plate 32 is disposed between the two secondary shielding plates 31. The corner main corrugated plate 12 and the corner secondary corrugated plate 32 are both existing corner corrugated plates, and their structures and functions are existing technologies, which will not be described in detail here. For example, the corner main corrugated plate 12 and the corner secondary corrugated plate 32 can adopt the corner corrugated plates disclosed in CN308818665S and CN117803849A. Preferably, each corner secondary corrugated plate 32 is welded between the two secondary shielding plates 31.

[0046] The main insulation layer 2 includes a first insulation block 21 and a second insulation block 22, with a first gap 23 between them; a third included angle exists between the first insulation block 21 and the second insulation block 22. The secondary insulation layer 4 includes a third insulation block 41 and a fourth insulation block 42, with a second gap 43 between them; a fourth included angle exists between the third insulation block 41 and the fourth insulation block 42. The first, second, third, and fourth included angles are the same. The first and second gaps can be filled with glass wool for heat insulation.

[0047] In this invention, the main shielding layer and the secondary shielding layer are independent shielding layers and are not connected by a connector. Therefore, in principle, the conduction of cold energy through the connector is avoided, which effectively improves the thermal insulation performance of the corner area of ​​the membrane enclosure system.

[0048] The spacing between adjacent corner main corrugated plates 12 is smaller than the distance between adjacent corner secondary corrugated plates 32. Specifically, the ratio of the spacing between adjacent corner main corrugated plates 12 to the distance between adjacent corner secondary corrugated plates 32 is 2:3. The main purpose of this design is that, in current technology, the corrugation spacing on the main shielding layer and the secondary shielding layer is the same. However, research shows that since the secondary shielding layer is a redundant layer to ensure the airtightness of the membrane enclosure system, it only functions when the main shielding layer fails. Furthermore, the secondary shielding layer's function of bearing liquid is not the norm for membrane enclosure systems. Therefore, the corrugation spacing of the secondary shielding layer does not need to be as small as that of the main shielding layer. The corrugation spacing of the secondary shielding layer can be appropriately increased, reducing the number of corrugations in the secondary shielding layer, thereby reducing processing workload and improving the construction efficiency of the membrane enclosure system.

[0049] The corner corrugated plate 32 includes a first type of corrugated plate 321 and / or a second type of corrugated plate 322 along the first direction; the secondary insulation layer 4 includes multiple secondary insulation boxes 44 along the first direction, with a third gap 45 between adjacent secondary insulation boxes 44; the third gap 45 can be filled with glass wool. The first direction of the corner area is perpendicular to the extension direction of the corner corrugated plate 32. The first type of corrugated plate 321 is located in the middle of the secondary insulation box 44, and the second type of corrugated plate 322 is located on both sides of the secondary insulation box 44, spanning two adjacent secondary insulation boxes 44. That is, the position of the second type of corrugated plate 322 corresponds to the position of the third gap 45. In this design, the third gap 45 acts as an expansion joint, which can compensate for the shrinkage at the corresponding position of the corrugated plate on the secondary shielding layer 3, avoiding damage to the entire secondary insulation box. This scheme can also be understood as follows: some of the corner corrugated plates 32 are set in the gap between two adjacent secondary insulation boxes 44.

[0050] In a preferred embodiment, the position of any second type secondary corrugated plate 322 does not correspond to the position of the corner main corrugated plate 12.

[0051] The corrugated protrusions of the main corrugated plate 12 and the secondary corrugated plate 32 in the corner area may have the same or different directions. Specifically, the corrugated protrusions of the main corrugated plate 12 and the secondary corrugated plate 32 can be inward and inward, or inward and outward, or outward and inward, or outward and outward, respectively. Preferably, the corrugated protrusions of the secondary corrugated plate 32 are inward. A receiving groove 24 is provided on the outer side of the main insulation layer 2 to accommodate the corrugations of the secondary corrugated plate 32 in the corner area.

[0052] In one preferred embodiment, the corrugated protrusions of the corner corrugated plate 12 face outwards, and a receiving groove 24 is also provided on the inner side of the main insulation layer 2 to accommodate the corrugated protrusions of the corner corrugated plate 12. In another preferred embodiment, the corrugated protrusions of the corner corrugated plate 12 face inwards, and a gap 25 is provided on the inner side of the main insulation layer 2; the position of the gap 25 corresponds to the corrugated protrusions of the corner corrugated plate 12. The gap 25 is an expansion joint, which can compensate for the shrinkage at the point on the main insulation layer 2 corresponding to the corrugated protrusions of the corner corrugated plate 12, thus preventing damage to the main insulation layer 2 as a whole. In this preferred embodiment, only the gap 25 needs to be provided on the inner side of the main insulation layer 2, instead of a receiving groove 24 larger than the gap 25. Therefore, compared with the previous preferred embodiment, the structure of the main insulation layer 2 is more complete in this preferred embodiment, which means that the main insulation layer 2 has higher strength and is more reliable in use.

[0053] A reinforcing layer 26 may be provided within the main insulation layer 2, and the reinforcing layer 26 is located outside the gap 25. Specifically, the reinforcing layer 26 is located between the gap 25 and the receiving groove 24. The reinforcing layer 26 can be a crack-resistant strip, fiberglass cloth, or plywood. The design of the reinforcing layer 26 can make the main insulation layer 2 more robust and reliable.

[0054] The main insulation layer 2 includes, from the inside out, a support plate 27, an insulation material 28, and another support plate 27; the secondary insulation layer 4 includes, from the inside out, a support plate 27, an insulation material 28, and another support plate 27. The support plate 27 may be plywood, and the insulation material 28 may be polyurethane.

[0055] The main insulation layer 2 includes multiple main insulation boxes along the first direction. Among the multiple main insulation boxes, some are first main insulation boxes 201 and others are second main insulation boxes 202. The first main insulation boxes 201 and the second main insulation boxes 202 are arranged alternately in sequence. The length of the secondary insulation box 44 along the first direction is greater than the length of the first main insulation box 201 along the first direction, and the length of the first main insulation box 201 along the first direction is greater than the length of the second main insulation box 202 along the first direction. The main shielding plate 11 located at the edge of the first main insulation box 201 and the main shielding plate 11 located at the edge of the second main insulation box 202 are connected by a connecting plate 113. This scheme can also be understood as the connecting plate 113 being set at the gap between adjacent main insulation boxes to connect the main shielding plates at the edges of adjacent main insulation boxes. In a preferred embodiment, the two sides of the connecting plate 113 are welded to the main shielding plate 11 located at the edge of the first main layer insulation box 201 and the main shielding plate 11 located at the edge of the second main layer insulation box 202, respectively.

[0056] The main insulation layer 2 has a main layer fixing hole 203 on the support plate 27 located outside the insulation material 28. The main layer fixing hole 203 is used to accommodate the first anchoring structure. The first anchoring structure is used to connect the main insulation layer 2 and the secondary shielding plate 31. The first anchoring structure does not contact the main shielding plate 11. Preferably, the anchoring structure does not penetrate the insulation material 28 of the main insulation layer 2. The first anchoring structure can be a screw and nut structure. The main layer fixing hole 203 is located at the four corners of the main insulation box. The secondary insulation layer 4 has a secondary layer fixing hole 204. The secondary insulation box 44 has a secondary layer fixing hole 204 at each of its four corners. The secondary layer fixing hole 204 is used to cooperate with the second anchoring structure to fix the secondary insulation layer 4 to the outer shell of the membrane enclosure system. The second anchoring structure can be a screw and nut structure.

[0057] The present invention also provides a method for manufacturing a corner structure for use in a membrane enclosure system; the method further includes the following steps:

[0058] Step 1: Prefabricate the secondary insulation layer 4 with the secondary shielding plate 31 and the main insulation layer 2 with the main shielding plate 11 in the factory. Specifically, prefabricate the main insulation layer 2 and the secondary insulation layer 4 in the factory, and install the main shielding plate 11 to the main insulation layer 2 and the secondary shielding plate 31 to the secondary insulation layer 4.

[0059] Step 2: At the construction site of the membrane enclosure system, install the secondary insulation layer 4 with the secondary shielding plate 31 onto the outer shell of the membrane enclosure system.

[0060] Step 3: Weld the corner corrugated plate 32 between adjacent secondary shielding plates 31 to form the secondary shielding layer 3;

[0061] Step 4: Install the main insulation layer 2 with the main shielding plate 11 on the secondary shielding layer 3;

[0062] Step 5: Weld corner corrugated plates 12 between all or part of the adjacent main shielding plates 11 to form the main shielding layer 1. If only some of the main shielding plates 11 are welded with corner corrugated plates 12, connecting plates 113 can be welded between the other part of the main shielding plates 11.

[0063] The present invention also provides an enclosure system employing the corner structure described above for membrane-type enclosure systems.

[0064] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0065] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A corner structure for a membrane-type enclosure system, characterized in that, It includes a main shielding layer (1), a main insulation layer (2), a secondary shielding layer (3), and a secondary insulation layer (4) arranged sequentially from the inside out. The main shielding layer (1) includes a main shielding plate (11) and a corner corrugated plate (12); the main shielding plate (11) includes a first main plate (111) and a second main plate (112) integrally connected to each other, and the first included angle between the first main plate (111) and the second main plate (112) is greater than 0° and less than 180°; the corner corrugated plate (12) is disposed between the two main shielding plates (11); The secondary shielding layer (3) includes a secondary shielding plate (31) and a corner secondary corrugated plate (32); the secondary shielding plate (31) includes a first plate (311) and a second plate (312) integrally connected to each other, and there is a second included angle between the first plate (311) and the second plate (312); the corner secondary corrugated plate (32) is disposed between the two secondary shielding plates (31); The main insulation layer (2) includes a first insulation block (21) and a second insulation block (22), with a first gap (23) between the first insulation block (21) and the second insulation block (22); and a third included angle between the first insulation block (21) and the second insulation block (22). The secondary insulation layer (4) includes a third insulation block (41) and a fourth insulation block (42), and there is a second gap (43) between the third insulation block (41) and the fourth insulation block (42); there is a fourth included angle between the third insulation block (41) and the fourth insulation block (42); The first included angle, the second included angle, the third included angle, and the fourth included angle are the same.

2. The corner structure for a membrane enclosure system according to claim 1, characterized in that, The main corrugated plate (12) of each corner area is welded between two main shielding plates (11); the secondary corrugated plate (32) of each corner area is welded between two secondary shielding plates (31).

3. The corner structure for a membrane-type enclosure system according to claim 2, characterized in that, The spacing between the main corrugated plates (12) in adjacent corner areas is less than the distance between the secondary corrugated plates (32) in adjacent corner areas.

4. The corner structure for a membrane-type enclosure system according to claim 3, characterized in that, The ratio of the spacing between the main corrugated plates (12) in adjacent corner areas to the distance between the secondary corrugated plates (32) in adjacent corner areas is 2:

3.

5. The corner structure for a membrane enclosure system according to claim 1, characterized in that, The corner corrugated plate (32) includes a first type of corrugated plate (321) and / or a second type of corrugated plate (322); The secondary insulation layer (4) includes multiple secondary insulation boxes (44), and there is a third gap (45) between adjacent secondary insulation boxes (44). The first type of secondary corrugated plate (321) is located in the middle of the secondary insulation box (44), and the second type of secondary corrugated plate (322) is located on both sides of the secondary insulation box (44) and spans two adjacent secondary insulation boxes (44).

6. The corner structure for a membrane enclosure system according to claim 1, characterized in that, The corrugated protrusions of the corner secondary corrugated plate (32) are oriented inward; a receiving groove (24) is provided on the outer side of the main insulation layer (2), which is used to receive the corrugations of the corner secondary corrugated plate (32).

7. The corner structure for a membrane enclosure system according to claim 1, characterized in that, The corrugated protrusions of the main corrugated plate (12) in the corner area are oriented inward, and a gap (25) is provided on the inner side of the main insulation layer (2); the position of the gap (25) corresponds to the corrugated protrusions of the main corrugated plate (12) in the corner area.

8. The corner structure for a membrane enclosure system according to claim 7, characterized in that, A reinforcing layer (26) is provided inside the main insulation layer (2), and the reinforcing layer (26) is located outside the gap (25).

9. The corner structure for a membrane enclosure system according to claim 1, characterized in that, The main insulation layer (2) includes, from the inside out, a support plate (27), an insulation material (28), and a support plate (27); the secondary insulation layer (4) includes, from the inside out, a support plate (27), an insulation material (28), and a support plate (27).

10. The corner structure for a membrane enclosure system according to claim 1, characterized in that, It also includes a connecting plate (113). The main insulation layer (2) includes multiple main insulation boxes; The connecting plate (113) is set at the gap between adjacent main insulation boxes and is used to connect the main shielding plate (11) at the edge of the adjacent main insulation box.

11. The corner structure for a membrane enclosure system according to claim 9, characterized in that, The main insulation layer (2) is provided with a main layer fixing hole (203) on the support plate (27) outside the insulation material (28). The main layer fixing hole (203) is used to accommodate the first anchoring structure. The first anchoring structure is used to connect the main insulation layer (2) and the secondary shielding plate (31). The anchoring structure does not contact the main shielding plate (11).

12. The corner structure for a membrane enclosure system according to claim 10, characterized in that, Among the multiple main insulation boxes, some are first main insulation boxes (201), and others are second main insulation boxes (202); the length of the secondary insulation box (44) is greater than the length of the first main insulation box (201), and the length of the first main insulation box (201) is greater than the length of the second main insulation box (202).

13. A method for manufacturing a corner structure, characterized in that, The method for manufacturing the corner structure for a membrane-type enclosure system according to any one of claims 2-11; further includes the following steps: Step 1: Prefabricate the secondary insulation layer (4) with the secondary shielding plate (31) and the main insulation layer (2) with the main shielding plate (11) in the factory. Step 2: At the construction site of the membrane enclosure system, install the secondary insulation layer (4) with the secondary shielding plate (31) onto the outer shell of the membrane enclosure system; Step 3: Weld the corner corrugated plate (32) between adjacent secondary shielding plates (31) to form a secondary shielding layer (3); Step 4: Install the main insulation layer (2) with the main shielding plate (11) on the secondary shielding layer (3); Step 5: Weld the corner corrugated plate (12) between all or part of the adjacent main shielding plates (11) to form the main shielding layer (1).

14. An enclosure system, characterized in that, The corner structure for a membrane-type enclosure system as described in any one of claims 1-12 is adopted.

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