1. The utility model provides a leakage liquid storage device of independent liquid tank, is equipped with heat preservation (2) at the outer wall of liquid tank (3), just leave leak passage (4) between liquid tank (3) and heat preservation (2), its characterized in that wear to be equipped with honeycomb duct (61) in heat preservation (2) of liquid tank (3) bottom, the upper end of honeycomb duct (61) with leak passage (4) are linked together, and the lower extreme intercommunication has bleeder valve (6), the below of bleeder valve (6) is equipped with receiver (5), receiver (5) divide into upper and lower two halves, and the latter half sets up in the bottom of hull (1), can dismantle between upper half and the latter half and be connected, upper half is including seting up the opening at the top, bleeder valve (6) are located among the opening.

2. The leaking liquid storing device according to claim 1, wherein the relief valve (6) is a rupture disc.

3. A leaking liquid storing device according to claim 1, characterized in that the edge of the opening of the upper half is provided with a ring of baffles (521).

4. The leaking liquid storing apparatus according to claim 1, wherein the opening of the upper half is rectangular or circular.

5. A leaking liquid storing device according to claim 1, c h a r a c t e r i z e d i n that a first laminated wood (54) is arranged between the upper and lower halves.

6. The leaking liquid storing apparatus according to claim 1, wherein said upper half portion comprises an upper surrounding wall plate (52) having a Z-shaped longitudinal section.

7. The leaking liquid storing apparatus according to claim 6, wherein said upper wall panel (52) is cold-formed from a steel plate.

8. A storage device for leakage liquid according to claim 1, wherein the lower half comprises a support panel (56), a lower wall panel (51) and a bottom panel (53) connected vertically in sequence, and the inner side of the bottom panel (53) is coated with a thermal insulation material (531).

9. The leaking liquid storing device according to claim 8, characterized in that the bottom plate (53) is supported at the bottom of the hull (1) by a second laminated wood (58).

10. A leaking liquid storage device according to claim 9, characterized in that the bottom plate (53) is provided with a limiting plate (581) on the outside, the hull (1) is provided with an embedded plate (582) on the bottom, and the second laminated wood (58) is embedded on the embedded plate (582) and abuts against the limiting plate (581).

Background

The liquefied gas carrier is used for transporting liquefied gas cargos, and due to the fact that the temperature of the liquefied gas cargos is very low, if the liquefied gas cargos leak to the ship body in the transportation process, the temperature of the local area of the ship body is suddenly reduced, and the safety of the structure of the ship body is damaged. Therefore, when designing a ship, consideration is given to how the leaked liquid is stored. Generally, containers for storing leaked liquid need to be able to accommodate more than 15 days of leakage, and how to meet storage requirements and avoid excessive space usage is a design consideration.

Disclosure of Invention

In view of the above-mentioned drawbacks, the present invention provides a leakage liquid storage device with simple structure and easy assembly and disassembly.

The invention provides a leakage liquid storage device of an independent liquid tank, wherein an insulating layer is arranged on the outer wall of the liquid tank, a leakage channel is reserved between the liquid tank and the insulating layer, a flow guide pipe penetrates through the insulating layer at the bottom of the liquid tank, the upper end of the flow guide pipe is communicated with the leakage channel, the lower end of the flow guide pipe is communicated with a discharge valve, a liquid storage container is arranged below the discharge valve, the liquid storage container is divided into an upper half part and a lower half part, the lower half part is arranged at the bottom of a ship body and is detachably connected with the upper half part, the upper half part comprises an opening arranged at the top, and the discharge valve is positioned in the opening.

Preferably, the relief valve is a rupture disc.

Preferably, the edge of the opening of the upper half part is provided with a ring of baffle plates.

Preferably, the opening of the upper half is rectangular or circular.

Preferably, a first laminated wood is arranged between the upper half part and the lower half part.

Preferably, the upper half portion comprises an upper wall panel having a Z-shaped longitudinal cross-section.

Preferably, the upper enclosure wall plate is made of cold-bent steel plate.

Preferably, the lower half portion comprises a supporting panel, a lower wall enclosing plate and a bottom plate which are vertically connected in sequence, and the inner side of the bottom plate is laid with a heat insulation material.

Preferably, the bottom plate is supported at the bottom of the hull by a second laminated wood.

Preferably, the outer side of the bottom plate is provided with a limiting plate, the bottom of the ship body is provided with an embedded plate, and the second laminated wood is embedded on the embedded plate and is abutted to the limiting plate.

The invention has the advantages of simple structure and strong universality, can be widely applied to liquefied gas ships or dual-fuel power ships for carrying low-temperature liquid cargos such as LPG, LEG, LNG and the like, can temporarily store leaked liquid on the basis of not influencing the structural strength of the ship body, and has lower cost.

Drawings

FIG. 1 is a schematic view of a half-section of a marine vessel;

FIG. 2 is an enlarged schematic view of the structure at C in FIG. 1;

FIG. 3 is a top view at A-A of FIG. 2 in the form of an opening;

FIG. 4 is a top view A-A of FIG. 2 in the form of an alternative opening;

fig. 5 is a schematic view of the distribution of the reservoirs at the bottom of the tank.

Element number description:

1 hull of ship

2 insulating layer

3 liquid cabin

4 leakage pathway

5 liquid storage container

51 lower wall board

52 upper wall board

521 baffle

522 first support toggle plate

53 bottom plate

531 Heat insulating material

54 first laminated wood

55 fastening piece

56 support panel

57 second support toggle

58 second laminated wood

581 limit plate

582 embedded plate

6 relief valve

61 honeycomb duct

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, in the liquefied gas carrier, the liquid tank 3 is an independent tank body arranged in the hull 1, and the outer wall of the liquid tank 3 is provided with an insulating layer 2 to prevent the cryogenic liquid in the liquid tank 3 from directly contacting the hull 1 and further influencing the structural strength of the hull 1. A leakage channel 4 is left between the tank 3 and the insulation 2 so that leakage liquid can flow through the leakage channel 4 to the reservoir.

As shown in fig. 1 and 2, the present invention provides a leaked liquid storage device of an independent liquid tank, wherein a flow guide pipe 61 is arranged in an insulating layer 2 at the bottom of a liquid tank 3 in a penetrating manner, the upper end of the flow guide pipe 61 is communicated with a leakage channel 4, the lower end of the flow guide pipe is communicated with a relief valve 6, a liquid storage container 5 is arranged below the relief valve 6, the liquid storage container 5 is divided into an upper half part and a lower half part, the lower half part is arranged at the bottom of a ship body 1, the upper half part and the lower half part are detachably connected, the upper half part comprises an opening arranged at the top, and the relief valve 6 is positioned in the opening. When a leakage occurs in the tank 3, the leaking liquid is free to flow downwards through the leakage channel 4 under the influence of gravity and the shaking motion of the vessel and then through the draft tube 61 to the relief valve 6. Specifically, the relief valve 6 is a rupture disk, and when no liquid leaks, the temperature and the pressure of the rupture disk cannot change greatly, and the rupture disk is in a perfect closed state. The rupture disk can adopt two forms of temperature sensing and pressure sensing, when the temperature sensing type rupture disk is adopted, when the leaked liquid contacts the rupture disk, the temperature of the rupture disk can be obviously reduced, when the temperature is reduced to a preset temperature value, the rupture disk is exploded, and the leaked liquid flows into the liquid storage container 5; when the rupture disk is in a pressure induction type, along with the increase of leakage liquid contacting the rupture disk, the pressure borne by the rupture disk is gradually increased, when the pressure rises to a preset pressure value, the rupture disk is exploded, and the leakage liquid flows into the liquid storage container 5.

The opening of the upper half part of the liquid storage container 5 is rectangular as shown in fig. 3 or circular as shown in fig. 4, and the opening is mainly used for increasing the vaporization effect of the leaked liquid, so that the partially vaporized leaked liquid can be discharged from the opening, the amount of the liquid stored in the liquid storage container 5 is reduced, the size of the liquid storage container 5 is reduced on the basis of meeting the requirement of the working time of the liquid storage container 5, and the space occupied by the liquid storage container 5 is reduced. The edge of the opening is provided with a circle of baffle 521, the baffle 521 can prevent the liquid in the relief valve 6 from splashing out in the relief process, and can also prevent the liquid in the liquid storage container 5 from splashing upwards due to sloshing in the ship navigation process, so that the structural safety of the ship body is damaged. The baffle 521 is preferably made of flat steel.

As shown in fig. 2, the upper half portion includes an upper wall plate 52 having a Z-shaped longitudinal section, the upper wall plate 52 is formed by cold bending a steel plate, and two corners are rounded to facilitate reducing welding seams and improving the sealing performance of the liquid storage container 5. In addition, the bottom plate area of the upper wall panel 52 is provided with at least three first support brackets 522, and the first support brackets 522 may have an arc shape or a triangular shape, which is mainly used for increasing the rigidity of the upper wall panel 52. The lower half part of the liquid storage container 5 comprises a support panel 56, a lower wall panel 51 and a bottom plate 53 which are vertically connected in sequence, and the inner side of the bottom plate 53 is laid with a thermal insulation material 531 (the "inner side" refers to the side close to the discharge valve 6), so that the phenomenon that the temperature of the ship hull 1 is suddenly reduced due to the fact that the low-temperature liquid in the liquid storage container 5 excessively absorbs the heat of the ship hull 1, and the structural safety is damaged is avoided. A plurality of second support brackets 57 are also provided between the support panel 56 and the base plate 53, the second support brackets 57 being connected to the lower wall panel 51 for increasing the lateral stiffness of the lower wall panel 51 whilst bearing vertical loads.

In a preferred embodiment of the invention, a first laminate 54 is provided between the upper wall panel 52 and the support panel 56, the three being releasably connected by fasteners 55, the fasteners 55 comprising in particular hex nuts, studs, bolts and washers. When the relief valve 6 is faulty or needs to be replaced, the operator can release the fasteners 55 and repair the relief valve 6 by removing the upper wall panel 52 by lateral movement within the limited space between the thermal insulation 2 and the hull 1. The bottom plate 53 is supported on the bottom of the hull 1 by the second laminated wood 58 so that the liquid storage container 5 can be kept at a distance from the hull 1 sufficient to effectively ensure that the temperature change of the hull 1 is within a safe range, taking into account the very low thermal conductivity of the laminated wood and air. In a specific implementation, the outer side of the bottom plate 53 (here, "outer side" refers to the side away from the bleed valve 6) is provided with a limit plate 581, the bottom of the hull 1 is welded with an embedded plate 582, and the second laminated wood 58 is embedded on the embedded plate 582 and abuts against the limit plate 581, so that double fixation of the second laminated wood 58 is achieved.

As shown in fig. 5, the liquid storage container 5 has a sufficient volume to contain 15 days of leakage liquid according to the international requirements of the regulations on the ship for bulk transport of liquefied gas (IGC CODE), so that the liquid storage container 5 can be arranged at four corners of the bottom of each tank 3, and whether the liquid storage container 5 needs to be additionally arranged in the middle area or other areas of the tank 3 is selected according to the estimated leakage amount, so that the sufficient collection of the leakage liquid can be ensured, and the occupied space of each liquid storage container 5 can be reduced.

In conclusion, the leaked liquid storage device has the advantages of simple structure and strong universality, can be widely applied to liquefied gas ships or dual-fuel power ships carrying low-temperature liquid cargos such as LPG, LEG, LNG and the like, can temporarily store leaked liquid on the basis of not influencing the structural strength of the ship body, and is low in cost.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.