An installation structure for insulation materials used in cryogenic cargo compartments

Abstract

This utility model discloses an installation structure for insulation material in cryogenic cargo compartments, including a lower insulation material panel layer and an upper insulation material panel layer. The upper and lower insulation material panel layers are fixedly connected by mechanical fasteners. Corrugated main wall membranes and secondary wall membranes are respectively fixed on the upper and lower insulation material panel layers. The lower and upper insulation material panel layers each include multiple interlocking lower and upper insulation material panels. The splicing surface of two adjacent upper insulation material panels includes a stepped protrusion structure that can be pressed together. The insulation material for cryogenic cargo compartments disclosed in this application solves the problems of inconvenient operation or insufficient space for mechanical fasteners due to limited space in existing technologies; at the same time, it can minimize heat loss at the connection points and prevent a decrease in overall insulation performance.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal insulation structure connection for maintaining thermal insulation and airtightness in cargo holds of LNG ships or marine / land facilities, and in particular to an installation structure for thermal insulation materials used in cryogenic cargo holds. Background Technology

[0002] Typically, for the transport or storage of cryogenic cargo in LNG ships or marine / land-based facilities, insulation materials must be installed to maintain the extremely low temperatures in the cargo holds. These insulation materials are designed to maintain both thermal insulation performance and airtightness, and each material is designed to optimal specifications. To maintain insulation performance, not only are the properties of the raw materials themselves crucial, but the connection method between the insulation panels is also very important.

[0003] like Figure 5 and Figure 6 As shown, the insulation material panels constituting the cargo hold are divided into a lower panel and an upper panel. A corrugated secondary barrier (secondary shielding membrane) is installed between the lower and upper panels. The lower and upper panels are fixed together by mechanical fasteners. After the upper panel is installed, it is finally finished by airtight welding on the primary barrier (main shielding membrane). In the prior art, the contact surface between adjacent panels in the upper panel is a straight line structure. This structure has the following shortcomings: 1. The upper and lower panels need to be fixed by mechanical fasteners. For the edge of the cargo hold (especially the installation position of asymmetrical panels), due to the limited space, it is inconvenient to use mechanical fasteners for fixing, or there is not enough space to install mechanical fasteners; 2. The straight contact surface between adjacent panels results in a small contact area, poor airtightness, and easy heat loss and increased evaporation rate. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by proposing an installation structure for insulation materials used in cryogenic cargo compartments.

[0005] The technical means adopted in this utility model are as follows:

[0006] An installation structure for insulation material in an ultra-low temperature cargo compartment includes a lower insulation material panel layer and an upper insulation material panel layer. The lower and upper insulation material panel layers are fixedly connected by mechanical fasteners. A corrugated primary screen wall membrane is fixed on the upper insulation material panel layer, and a corrugated secondary screen wall membrane is fixed between the lower and upper insulation material panel layers. The lower insulation material panel layer includes multiple interlocking lower insulation material panels, and the upper insulation material panel layer includes multiple interlocking upper insulation material panels. The splicing surfaces of two adjacent upper insulation material panels of the upper insulation material panel layer include stepped protrusions that can be pressed together.

[0007] Furthermore, a soft insulation material layer is also provided between the stepped protrusions of the two adjacent upper insulation material panels to seal the splicing surface.

[0008] Furthermore, the soft insulation material layer is made of polyurethane foam.

[0009] Furthermore, the tread surface of the stepped protrusion structure is an inclined surface.

[0010] Furthermore, the angle of the tread surface of the stepped protrusion structure is less than or equal to 10°.

[0011] Furthermore, the height ratio of the two kick surfaces of the stepped protrusion structure is 1:1 to 1:5.

[0012] Furthermore, the height of the smaller kick surface in the two kick surfaces of the stepped protrusion structure is in a ratio of 1:1 to 1:2 with respect to the width of the tread surface.

[0013] Furthermore, the upper insulation material panel is provided with a corrugated clearance groove on the side facing the secondary screen wall membrane to avoid the corrugated protrusions of the secondary screen wall membrane.

[0014] Furthermore, the corrugated clearance groove is located at the splicing position of the stepped protrusion structure of two adjacent upper insulation material panels.

[0015] Compared with existing technologies, the installation structure for insulation materials in cryogenic cargo compartments disclosed in this utility model has the following beneficial effects: The installation structure for insulation materials in cryogenic cargo compartments disclosed in this application has stepped protrusions on the splicing surfaces of adjacent upper insulation material panels that can press against each other. This allows the upper stepped protrusions to exert a downward pressing force on the lower stepped protrusions when the two adjacent upper insulation material panels are spliced, reducing the number of fasteners required. This mitigates the problem of inconvenient operation or insufficient space for mechanical fasteners due to limited space. Simultaneously, the stepped protrusions increase the contact surface at the splicing points, thereby increasing airtightness, reducing heat loss, and lowering the evaporation rate. In other words, this application minimizes heat loss at the connection points, thus preventing a decline in overall insulation performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation structure of the thermal insulation material for cryogenic cargo compartments disclosed in this utility model;

[0017] Figure 2 This is a schematic diagram of the stepped protrusion structure on the splicing surface of two adjacent upper insulation material panels in the installation structure of the insulation material for cryogenic cargo compartment disclosed in this utility model.

[0018] Figure 3 This is a structural diagram of an embodiment of the stepped protrusion structure on the splicing surface of two adjacent upper insulation material panels in the installation structure of the insulation material for cryogenic cargo compartment disclosed in this utility model. In the diagram, the tread surface of the protruding step structure is an inclined surface.

[0019] Figure 4 This is a structural diagram of another embodiment of the stepped protrusion structure on the splicing surface of two adjacent upper insulation material panels in the installation structure of the insulation material for cryogenic cargo compartment disclosed in this utility model. In the diagram, the heights of the two kick surfaces are inconsistent.

[0020] Figure 5 A schematic diagram of the structure of a cargo hold as disclosed in the prior art;

[0021] Figure 6 This is a schematic diagram of the installation structure of insulation materials for cryogenic cargo compartments disclosed in the prior art;

[0022] In the diagram: 1. Lower insulation material panel layer; 10. Lower insulation material panel; 2. Upper insulation material panel layer; 20. Upper insulation material panel; 21. Stepped protrusion structure; 22. Tread; 23. Riser; 24. Corrugated clearance groove; 3. Mechanical fastener; 4. Main screen wall membrane; 5. Secondary screen wall membrane; 6. Soft insulation material layer; 7. Cargo hold; 70. Cargo hull. Detailed Implementation

[0023] like Figure 1 and Figure 2 As shown, the installation structure of the insulation material for cryogenic cargo compartment disclosed in this utility model includes a lower insulation material panel layer 1 and an upper insulation material panel layer 2. The lower insulation material panel layer 1 and the upper insulation material panel layer 2 are fixedly connected by mechanical fasteners 3. A corrugated main screen wall membrane 4 is fixed on the upper insulation material panel layer 2. A corrugated secondary screen wall membrane 5 is fixed between the lower insulation material panel layer 1 and the upper insulation material panel layer 2. The lower insulation material panel layer 1 includes multiple lower insulation material panels 10 spliced ​​together. The upper insulation material panel layer 2 includes multiple upper insulation material panels 20 spliced ​​together. The splicing surface of two adjacent upper insulation material panels 20 of the upper insulation material panel layer 2 includes a stepped protrusion structure 21 that can be pressed together.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, the installation structure of the insulation material for cryogenic cargo compartments disclosed in this application includes a lower insulation material panel layer 1 and an upper insulation material panel layer 2. The lower insulation material panel layer 1 and the upper insulation material panel layer 2 are fixedly connected by mechanical fasteners 3. The lower insulation material panel layer 1 is fixedly connected to the outer shell of the cargo compartment 70 by mechanical fasteners 3. A corrugated main screen wall membrane 4 is fixed to the upper insulation material panel layer 2 by welding or other methods. A corrugated secondary screen wall membrane 5 is fixed between the lower insulation material panel layer 1 and the upper insulation material panel layer 2. The lower insulation material panel layer 1 includes multiple interlocking lower insulation material panels. The lower insulation material panel 10 is formed by splicing multiple lower insulation material panels 10 together. The upper insulation material panel layer 2 includes multiple upper insulation material panels 20 spliced ​​together. The splicing surfaces of two adjacent upper insulation material panels 20 in the upper insulation material panel layer 2 include stepped protrusion structures 21 that can be pressed together. That is, the edge of the upper insulation material panel 20 is a stepped protrusion structure 21 similar to a step structure. The protruding edges of the stepped protrusion structures 21 of two adjacent upper insulation material panels 20 can be pressed together.

[0025] The installation structure for insulation materials in cryogenic cargo compartments disclosed in this application includes stepped protrusions 21 that can press against each other at the splicing surfaces of two adjacent upper insulation material panels 20. This allows the upper stepped protrusion 21 to exert a downward pressing force on the lower stepped protrusion 21 when the two adjacent upper insulation material panels 20 are spliced, reducing the number of mechanical fasteners 3 used. This mitigates the problems of inconvenience or insufficient space for mechanical fasteners 3 due to limited space. Furthermore, the stepped protrusions 21 increase the contact surface at the splicing points, thereby increasing airtightness, reducing heat loss, and lowering the evaporation rate. In short, this application minimizes heat loss at the joints, preventing a decline in overall insulation performance.

[0026] Furthermore, a soft insulation material layer 6 is also provided between the stepped protrusions 21 of the two adjacent upper insulation material panels 20 to seal the splicing surface.

[0027] Specifically, in this embodiment, such as Figure 2 As shown, a soft insulation material layer 6 is also used to seal the splicing surface between the stepped protrusion structure 21 of the two adjacent upper insulation material panels 20, thereby effectively sealing the splicing surface between the two adjacent stepped protrusion structures 21, minimizing the heat loss generated at the connection, and thus preventing the overall insulation performance from declining.

[0028] Furthermore, the soft insulation material layer 6 is made of polyurethane foam.

[0029] Specifically, the soft insulation material layer 6 is made of polyurethane foam, which can effectively seal the splicing surfaces of two adjacent stepped protrusion structures 21, minimize heat loss at the connection, and thus prevent the overall insulation performance from declining.

[0030] Furthermore, the tread surface 22 of the stepped protrusion structure 21 is an inclined surface.

[0031] Specifically, in this embodiment, such as Figure 3 As shown, the tread surface 22 of the stepped protrusion structure 21 is an inclined surface, which not only facilitates installation but also improves the sealing performance.

[0032] Furthermore, the angle of the tread surface 22 of the stepped protrusion structure 21 is less than or equal to 10°.

[0033] Specifically, in this embodiment, the angle of the tread surface 22 of the stepped protrusion structure 21 is less than or equal to 10°, which facilitates the fitting of the two tread surfaces 22 together, not only simplifying installation but also improving sealing performance. Preferably, as Figure 3 As shown, the tread surface 22 of the stepped protrusion structure 21 has an angle of 8°~10°, which further facilitates installation and improves sealing performance.

[0034] Furthermore, the height ratio of the two kick surfaces 23 of the stepped protrusion structure 21 is 1:1 to 1:5.

[0035] Specifically, in this embodiment, such as Figure 2 and Figure 4 As shown, by setting the height ratio of the two kick surfaces 23 of the stepped protrusion structure 21 to 1:1 to 1:5, the contact surfaces of the insulation material panels 20 at the splicing positions can be pressed together effectively. Preferably, the height ratio of the two kick surfaces 23 of the stepped protrusion structure 21 is set to 1:5, that is, the height ratio of the upper kick surface 23 to the lower kick surface 23 is set to 1:5, which not only effectively achieves pressing but also facilitates installation.

[0036] Furthermore, the height of the smaller kick surface 23 in the two kick surfaces 23 of the stepped protrusion structure 21 is in a ratio of 1:1 to 1:2 with respect to the width of the tread surface 22.

[0037] Specifically, in this embodiment, the height of the smaller kick surface 23 in the two kick surfaces 23 of the stepped protrusion structure 21 is in a ratio of 1:1 to 1:2 with respect to the width of the tread surface 22. This structure can effectively improve the pressing effect and sealing performance.

[0038] Furthermore, the upper insulation material panel 20 is provided with a corrugated relief groove 24 on the side facing the secondary screen wall membrane 5 to avoid the corrugated protrusions of the secondary screen wall membrane 5.

[0039] Specifically, in this embodiment, such as Figure 1 and Figure 2 As shown, the upper insulation material panel 20 is provided with a corrugated relief groove 24 on the side facing the secondary screen wall membrane 5 to avoid the corrugated protrusions of the secondary screen wall membrane 5, thereby effectively avoiding the corrugated protrusions of the secondary screen wall membrane 5, so as to ensure effective contact and sealing between the upper insulation material panel 20 and the secondary screen wall membrane 5.

[0040] Furthermore, the corrugated clearance groove 24 is provided at the splicing position of the stepped protrusion structure 21 of the two adjacent upper insulation material panels 20.

[0041] Specifically, in this embodiment, the corrugated relief groove 24 is set at the splicing position of the stepped protrusion structure 21 of the two adjacent upper insulation material panels 20, and the splicing line is consistent with the direction of the corrugated protrusion of the secondary screen wall film 5. This structure can not only effectively avoid the corrugated protrusion of the secondary screen wall film 5, but also effectively ensure the strength of the upper insulation material panel 20 (so that the upper insulation material panel 20 will not be weakened due to the processing of the corrugated relief groove 24).

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An installation structure for insulation material in an ultra-low temperature cargo compartment, comprising a lower insulation material panel layer and an upper insulation material panel layer, wherein the lower insulation material panel layer and the upper insulation material panel layer are fixedly connected by mechanical fasteners, a corrugated primary screen wall membrane is fixed on the upper insulation material panel layer, and a corrugated secondary screen wall membrane is fixed between the lower insulation material panel layer and the upper insulation material panel layer, wherein the lower insulation material panel layer comprises multiple interlocking lower insulation material panels, and the upper insulation material panel layer comprises multiple interlocking upper insulation material panels, characterized in that: The splicing surfaces of two adjacent upper insulation material panels include stepped protrusions that can be pressed together.

2. The installation structure for insulation material in cryogenic cargo compartments according to claim 1, characterized in that: A soft insulation material layer is also used to seal the splicing surface between the stepped protrusions of the two adjacent upper insulation material panels.

3. The installation structure for the insulation material of the cryogenic cargo compartment according to claim 2, characterized in that: The flexible insulation material layer is made of polyurethane foam.

4. The installation structure for insulation material in cryogenic cargo compartments according to any one of claims 1 to 3, characterized in that: The tread surface of the raised step structure is an inclined surface.

5. The installation structure for insulation material in cryogenic cargo compartments according to claim 3, characterized in that: The angle of the tread surface of the stepped protrusion structure is less than or equal to 10°.

6. The installation structure for insulation material in cryogenic cargo compartments according to claim 5, characterized in that: The height ratio of the two kick surfaces of the stepped protrusion structure is 1:1 to 1:

5.

7. The installation structure for insulation material in cryogenic cargo compartments according to claim 6, characterized in that: The height of the smaller kick surface in the stepped protrusion structure is in a ratio of 1:1 to 1:2 with respect to the width of the tread.

8. The installation structure for insulation material in cryogenic cargo compartments according to claim 1, characterized in that: The upper insulation material panel has a corrugated clearance groove on the side facing the secondary screen wall membrane to avoid the corrugated protrusions of the secondary screen wall membrane.

9. The installation structure for insulation material in cryogenic cargo compartments according to claim 8, characterized in that: The corrugated clearance groove is located at the splicing position of the stepped protrusion structure of two adjacent upper insulation material panels.

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