Secondary shielding device for ship and ship

Abstract

The utility model provides a secondary shielding device for a ship and the ship. The ship is provided with a B-type independent liquid tank, a ship body inner bottom, a ship body outer bottom and the secondary shielding device. The B-type independent liquid tank is installed on the inner bottom of the ship body and provided with a leakage position, the secondary shielding device comprises a drop bearing disc which is arranged in the double-layer bottom space, the inlet end of the drop bearing disc is communicated with the leakage position, meanwhile, a heat insulation connecting assembly is simple and effective in design, the requirement for the space arrangement height between the independent liquid tank and the inner bottom is avoided, the arrangement space of the liquid tank is increased, and the stability of the liquid tank is improved. The ship is convenient to use and maintain in the whole life cycle, the problems existing in existing conventional design can be solved, and the design and production requirements are met.

Description

Technical Field

[0001] The utility model relates to the field of ships, and particularly relates to a secondary shielding device for ships and a ship. Background Art

[0002] According to the requirements of the IGC code (abbreviation for "International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk"), a Type B independent cargo tank refers to a cargo tank designed by using model tests, precise analysis means and analysis methods to determine its stress level, fatigue life and crack propagation characteristics. The shell of this type of cargo tank itself is the main screen wall. According to the requirements of the IGC code, if the cargo temperature is lower than -55°C, a partial secondary screen wall system needs to be set up. This local secondary screen wall system does not need to support the load of the liquefied gas cargo, and only needs to bear a small amount of cargo leakage. Therefore, the local secondary screen wall is based on the assumption of a small amount of leakage and is used as a temporary enclosure facility for the liquefied cargo leaking through the main screen wall.

[0003] In the prior art, the conventional local secondary screen wall is generally attached to the internal insulation shell of the Type B independent liquid tank, or relies on the insulating support at the lowest point of leakage, or is installed on the inner bottom plate of the ship. The design of these secondary screen walls is placed in the space between the inner bottom of the ship and the independent liquid tank, which has high requirements for space, occupies the tank volume of the liquid tank, and results in low space utilization rate. At the same time, the conventional local secondary screen wall structure in the prior art is relatively complex and not an independent structure. During production, it needs to have the same heat insulation process as the main shield, which is not easy to produce and has a high cost.

[0004] Therefore, it is urgent to develop a new technical solution to solve the above problems. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the defect that the setting of the secondary screen wall of the Type B liquid tank in the prior art affects the effective space of the Type B independent liquid tank and has a low space utilization rate, and to provide a secondary shielding device for ships and a ship.

[0006] The utility model solves the above technical problem through the following technical solutions:

[0007] A secondary shielding device for a ship includes a Type B independent liquid tank, an inner bottom of the ship, an outer bottom of the ship and a secondary shielding device. The Type B independent liquid tank is installed on the inner bottom of the ship. A double-bottom space is formed between the inner bottom of the ship and the outer bottom of the ship. The Type B independent liquid tank has a leakage position. The secondary shielding device includes a drip tray, which is used to be arranged in the double-bottom space, and the inlet end of the drip tray is communicated with the leakage position.

[0008] In this solution, the drip tray is placed in the double-bottom space, independently arranged from the Type B independent liquid tank, with no requirements for the spatial layout height between the independent liquid tank and the inner bottom, and it does not occupy the space on the inner bottom of the ship. This enables the Type B independent liquid tank to have a larger effective space for placing the liquid tank, increasing the tank capacity of the Type B independent liquid tank, improving the space utilization rate, and being conducive to enhancing the market competitiveness of the ship type.

[0009] Preferably, the drip tray is connected to the longitudinal girder of the inner bottom of the ship through a connecting component, and the drip tray is suspended in the double-bottom space of the ship.

[0010] In this solution, with the above structure, the drip tray can be suspended in the double-bottom space. This form is simple, easy to produce, has a low cost, and can meet the functional requirements of the entire secondary bulkhead.

[0011] Preferably, the secondary bulkhead device further includes a diversion pipe. The drip tray is a box structure with an opening at the top, and the opening forms an inlet end. The diversion pipe is used to connect the leakage position and the opening; one end of the diversion pipe close to the drip tray extends into the drip tray through the opening.

[0012] In this solution, the drip tray is a box structure with an opening at the top, and one end of the diversion pipe close to the drip tray extends into the drip tray through the opening. This can not only ensure that when the liquid tank leaks, the liquid flows into the drip tray through the diversion space and the diversion pipe, but also ensure that the ship can continue to perform the function of the secondary bulkhead during navigation.

[0013] Preferably, an installation opening is formed at the position on the inner bottom of the ship where the drip tray is to be arranged; the secondary bulkhead device further includes a protective member. The protective member is located in the double-bottom space, is connected to the side wall of the inner bottom of the ship, and surrounds the outside of the drip tray; the connection position of the protective member to the inner bottom of the ship is located outside the installation opening.

[0014] In this solution, a protective member is arranged around the drip tray, and the protective member covers the outside of the drip tray to form a semi-closed cavity, which can isolate the heat transfer between the suspended drip tray and other structures in the double-bottom space. In addition, the protective member can, to a certain extent, act as a protective fence for the drip tray, thereby preventing other external structures from interfering with or affecting the drip tray, and thus being conducive to ensuring the normal use of the secondary shielding device.

[0015] Preferably, the protective member is a square opening structure, the protective member covers the outside of the drip tray, and the end of the protective member with the opening is connected to the inner bottom of the ship.

[0016] In this solution, the protective member can effectively isolate the drip tray from the main shield, making the drip tray an independent entity, facilitating later maintenance, and enabling long-term effective inspection of the drip tray. In addition, the structure of the protective member is relatively simple, which is beneficial to the overall structure of the secondary shielding device.

[0017] Preferably, the connecting component is made of heat-insulating material.

[0018] In this solution, the setting of the heat-insulating connecting component can reduce the cold energy transfer of the secondary shield device.

[0019] Preferably, the drip tray is detachably connected to the longitudinal girder of the inner bottom of the hull through the connecting component.

[0020] In this solution, the detachable connection structure makes it more convenient to disassemble and assemble the drip tray, which is convenient for later maintenance, can conduct long-term inspection on the effectiveness of this structure, and has great advantages in terms of use, maintenance and repair.

[0021] Preferably, the connecting component includes a wooden bolt and a heat-insulating gasket; the top plate of the drip tray has a first mounting hole, which is used to match the second mounting hole on the longitudinal girder of the inner bottom of the hull, and the heat-insulating gasket is clamped between the longitudinal girder of the inner bottom of the hull and the top plate of the drip tray; the wooden bolt passes through the second mounting hole, the heat-insulating gasket and the first mounting hole in sequence.

[0022] In this solution, the wooden bolt and the heat-insulating gasket have good heat-insulating effect and low cost, with a simple structure and easy production. As the connecting structure between the longitudinal girder of the inner bottom of the hull and the drip tray, it can effectively isolate the heat transfer between the drip tray and the main shield, ensure that the drip tray is effectively fixed on the inner bottom of the hull, and no matter whether the ship is in port or on route, the drip tray can withstand the action of the inertial force brought by the hull movement.

[0023] Preferably, the material of the drip tray is stainless steel, or nickel steel, or aluminum alloy.

[0024] In this solution, the above-mentioned materials have better low-temperature resistance. Setting the drip tray to be made of the above-mentioned materials enables the drip tray to have better low-temperature resistance accordingly, which is conducive to the reliable operation of the secondary shield device.

[0025] The present utility model also provides a ship, which includes the above-mentioned secondary shield device for ships.

[0026] The positive and progressive effects of the present utility model are as follows:

[0027] In this secondary shield device, the drip tray is placed in the double-bottom space and is independently arranged from the Type B independent liquid tank. There is no requirement for the space layout height between the independent liquid tank and the inner bottom, and it does not occupy the space on the inner bottom of the hull, enabling the Type B independent liquid tank to have a larger effective space to place the liquid tank, which can increase the tank capacity of the Type B independent liquid tank, improve the space utilization rate, and is conducive to increasing the market competitiveness of the ship type. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the secondary shield device in an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of a partial structure of a ship in an embodiment of the present invention. The installation position of the drip tray on the ship is schematically shown in the figure;

[0030] Figure 3 This is another schematic diagram of a partial structure of a ship in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the connection between the top plate of the drip tray and the connection component in an embodiment of the present invention.

[0032] Explanation of reference numerals:

[0033] Type B hold space 1

[0034] Type B independent liquid tank 2

[0035] Type B hold insulation layer 3

[0036] Double bottom space 4

[0037] Drip tray 5

[0038] Inner bottom of the ship 6

[0039] Outer bottom of the ship 7

[0040] Liquid diversion space 8

[0041] Diversion pipe 9

[0042] Protective part 10

[0043] Connection component 11

[0044] Inner bottom longitudinal girder 12

[0045] Wood bolt 13

[0046] Adiabatic gasket 14

[0047] Top plate of the drip tray 15

[0048] Side plate of the drip tray 16 Detailed implementation manners

[0049] The following is a preferred embodiment, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.

[0050] As Figures 1-4As shown in the figure, in this embodiment, a secondary shielding device for a ship is provided. The ship has an independent B-type liquid tank 2, an inner bottom 6 of the ship's hull, an outer bottom 7 of the ship's hull, and a secondary shielding device. The independent B-type liquid tank 2 is installed on the inner bottom 6 of the B-type cabin. It is isolated from the outside through the B-type cabin insulation layer 3. A double-bottom space 4 is formed between the inner bottom 6 of the ship's hull and the outer bottom 7 of the ship's hull. The independent B-type liquid tank 2 has a leakage position. The secondary shielding device includes a drip tray 5, which is used to be arranged in the double-bottom space 4, and the inlet end of the drip tray 5 is communicated with the leakage position.

[0051] In this embodiment, the independent B-type liquid tank 2 is installed on the inner bottom 6 of the ship's hull. During operation, a small amount of leakage will occur in the independent B-type liquid tank 2, and the independent B-type liquid tank 2 has a leakage position. As the secondary shielding enclosure system of the independent B-type liquid tank 2, the drip tray 5 is used to receive a small amount of leakage generated by the leakage position. It is arranged in the double-bottom space 4 between the inner bottom 6 of the ship's hull and the outer bottom 7 of the ship's hull. The drip tray 5 is independently arranged from the independent B-type liquid tank 2, and there is no requirement for the spatial layout height between the independent liquid tank and the inner bottom, and it will not occupy the space on the inner bottom 6 of the ship's hull, so that the independent B-type liquid tank 2 has a larger effective space to place the liquid tank, which can increase the capacity of the independent B-type liquid tank 2, improve the space utilization rate, and is beneficial to increasing the market competitiveness of the ship type.

[0052] It should be noted that the leakage position of the independent B-type liquid tank 2 is generally the lowest point of the independent B-type liquid tank 2 or the point judged according to experience. In this embodiment, as Figure 2 shown, the secondary shielding device is arranged in the double-bottom space 4 at the four corners of the bottom of the independent B-type liquid tank 2 and the lowest point in the cabin.

[0053] As Figure 3 shown, in this embodiment, the drip tray 5 is connected to the inner bottom longitudinal girder 12 of the ship's hull through a connecting component 11. The drip tray 5 is suspended in the double-bottom space 4 of the ship's hull, which can ensure that the drip tray 5 is effectively fixed on the inner bottom structure. Whether the ship is in port or on a voyage, the drip tray 5 can withstand the action of the inertial force brought by the ship's movement.

[0054] As the secondary shielding enclosure system of the independent B-type liquid tank 2, it should be arranged in a supporting manner with the diversion pipe 9. A small amount of leaked liquid flows into the drip tray 5 through the liquid diversion space 8 and the diversion pipe 9. The drip tray 5 is a box structure with openings on the top. It is connected by a drip tray top plate 15 with an opening on the top and a drip tray side plate 16. The opening forms an inlet end. The diversion pipe 9 is used to connect the leakage position and the opening. One end of the diversion pipe 9 close to the drip tray 5 extends into the drip tray 5 from the opening. This form is simple, easy to produce, has a low cost, and can meet the functional requirements of the entire secondary shielding wall.

[0055] Specifically, in this embodiment, the drip tray 5 is a box structure with openings at the top. One end of the diversion pipe 9 close to the drip tray 5 extends into the drip tray 5 through the opening, ensuring that when the liquid tank leaks, the liquid flows into the drip tray 5 through the liquid diversion space 8 and the diversion pipe 9.

[0056] An installation opening is formed at the position on the inner bottom 6 of the hull where the drip tray 5 is to be arranged; the secondary bulkhead device further includes a protective member 10. The protective member 10 is located in the double-bottom space 4, is connected to the inner bottom 6 of the hull, and surrounds the outside of the drip tray 5; the connection position of the protective member 10 and the inner bottom 6 of the hull is located outside the installation opening. The protective member 10 is a square opening structure, covers the outside of the drip tray 5, and the end with the opening of the protective member 10 is connected to the inner bottom 6 of the hull.

[0057] In this embodiment, the protective member 10 covers the outside of the drip tray 5 to form a semi-closed cavity, which can isolate the suspended drip tray 5 from other structures in the double-bottom space 4. The protective member 10 is arranged around the drip tray 5 at the location of the drip tray 5 and is connected to the B-type tank space 1. A manhole can be provided on the bottom plate of the protective member 10 to facilitate the entry and exit of workers for the installation of the secondary bulkhead. The setting of the protective member 10 can also isolate the heat transfer between the suspended drip tray 5 and other structures in the double-bottom space 4, effectively avoiding the technical requirements and process requirements of the integrated design of the secondary bulkhead and the main bulkhead shell of the B-type tank. It has a wide application range and is common to various ship types.

[0058] As Figure 4 shown, in this embodiment, the drip tray 5 is detachably connected to the longitudinal girder of the inner bottom 6 of the hull through a connection assembly 11. Among them, the detachable connection assembly 11 makes the disassembly and assembly of the drip tray 5 more convenient, facilitates later maintenance, and can conduct long-term inspections on the effectiveness of this structure, having great advantages in terms of use and maintenance.

[0059] Furthermore, the connection assembly 11 is made of heat-insulating material. The connection assembly 11 includes a wooden bolt 13 and a heat-insulating gasket 14. The top plate of the drip tray 5 has a first installation hole for adapting to the second installation hole on the inner bottom longitudinal girder 12 of the hull. The heat-insulating gasket 14 is clamped between the inner bottom longitudinal girder 12 of the hull and the top plate 15 of the drip tray; the wooden bolt 13 passes through the second installation hole, the heat-insulating gasket 14, and the first installation hole in sequence.

[0060] The setting of the adiabatic connection component 11 can reduce the cold energy transfer of the secondary screen wall device. For the connection between the drip tray top plate 15 and the inner bottom longitudinal girder 12, the present utility model adopts bolt connection. The number of bolt connections can be adjusted according to needs. The material of the bolts is an adiabatic material. In addition, an adiabatic gasket 14 is added at the connection. The setting of the adiabatic gasket 14 can isolate the cold energy transfer in the drip tray 5. Specifically, the bolts are set as wooden bolts 13. The wooden bolts 13 and the adiabatic gasket 14 have good heat insulation effects and low costs, with simple structures and easy production. As the connection component 11 between the inner bottom longitudinal girder 12 of the hull and the drip tray 5, it can effectively isolate the heat transfer between the drip tray 5 and the main shield, ensuring that the drip tray 5 is effectively fixed on the inner bottom 6 of the hull.

[0061] In other alternative embodiments, for the selection of the connection component 11, adiabatic materials other than the wooden bolts 13 and the adiabatic gaskets 14 can also be used, as long as an adiabatic connection component 11 that can achieve the effect of isolating the cold energy transfer in the drip tray 5 is used.

[0062] In this embodiment, the material of the drip tray 5 is stainless steel. In other alternative embodiments, the material of the drip tray 5 can also be set as nickel steel or aluminum alloy. The above-mentioned materials have better low-temperature resistance. Setting the drip tray 5 to be made of the above-mentioned materials enables the drip tray 5 to correspondingly have better low-temperature resistance, which is beneficial to the reliable operation of the secondary shielding device.

[0063] The present utility model also provides a ship, which includes the above-mentioned secondary screen wall device for ships.

[0064] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present utility model is defined by the appended claims. Without departing from the principles and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A secondary shielding device for a ship, the ship having a B-type independent liquid tank, an inner hull bottom, an outer hull bottom and a secondary shielding device, the B-type independent liquid tank being installed on the inner hull bottom, a double bottom space being enclosed between the inner hull bottom and the outer hull bottom, the B-type independent liquid tank having a leakage position, characterized in that: The secondary shielding device comprises a drip tray, which is used to be arranged in the double-bottom space, and an inlet end of the drip tray is connected to the leakage position.

2. The secondary shielding device for a ship according to claim 1, characterized in that: The drip plate is connected to the longitudinal bones of the inner bottom of the hull through a connecting assembly, and the drip plate is suspended in the double bottom space.

3. The secondary shielding device for a ship according to claim 1, characterized in that: The secondary shielding device further comprises a flow guide pipe, the drip tray is a box structure with an opening on the top, the opening forms the inlet end, and the flow guide pipe is used to connect the leakage position and the opening; One end of the flow guide pipe close to the drip plate extends from the opening into the drip plate.

4. The secondary shielding device for a ship according to claim 1, characterized in that: A mounting opening is formed on the hull bottom at a position where the drip tray is arranged; The secondary shielding device further comprises a protective member, the protective member is located in the double bottom space, the protective member is connected to the side wall of the inner bottom of the hull, and is arranged around the outside of the drip tray; The connection position between the protective member and the inner bottom of the hull is located outside the installation opening.

5. The secondary shielding device for a ship according to claim 4, characterized in that: The protective member is a square opening structure, the protective member cover is arranged outside the drip tray, and one end of the protective member with an opening is connected to the inner bottom of the hull.

6. The secondary shielding device for a ship according to claim 2, characterized in that: The connecting component is made of a heat-insulating material.

7. The secondary shielding device for a ship according to claim 6, characterized in that: The drip tray is detachably connected to the longitudinal bones of the hull inner bottom through the connecting assembly.

8. The secondary shielding device for a ship according to claim 7, characterized in that: The connection assembly includes a wood bolt and a thermal insulation gasket; The top plate of the drip tray has a first mounting hole, the first mounting hole is used to match the second mounting hole on the longitudinal bone of the hull bottom, and the thermal insulation gasket is sandwiched between the longitudinal bone of the hull bottom and the top plate of the drip tray; The wooden bolt passes through the second mounting hole, the thermal insulation gasket and the first mounting hole in sequence.

9. The secondary shielding device for a ship according to any one of claims 1 to 8, characterized in that: The drip tray is made of stainless steel, nickel steel, or aluminum alloy.

10. A ship, characterized in that: It comprises the secondary shielding device for a ship as claimed in any one of claims 1-9.

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