Liquefied gas dripping structure and liquefied gas carrier

Abstract

The invention relates to a liquefied gas dripping structure and a liquefied gas carrier. The liquefied gas dripping and leaking structure comprises a dripping and leaking box body, wherein the dripping and leaking box body is provided with a containing cavity; the guide component is arranged in the drip box body and inclines towards the direction close to the bottom wall of the drip box body, a first communicating hole is formed in the end, close to the bottom wall of the drip box body, of the guide component, the guide component can divide the containing cavity into a first cavity and a second cavity, and the first communicating hole communicates with the first cavity and the second cavity; the first cavity can receive dripping low-temperature liquid, and the guiding component can enable the dripping liquid to enter the second cavity through the first communicating hole. Thus, the inclined guide part is arranged in the dripping box body, the liquefied gas dripping structure forms a double-layer structure, low-temperature liquid is prevented from splashing and overflowing through the guiding and blocking effects of the guide part, the height of the dripping box body can be reduced, and then the overall height and size of the liquefied gas dripping structure are reduced; the space utilization rate of the liquefied gas carrier is improved.

Description

Technical Field

[0001] The present application relates to the technical field of liquefied gas transportation, and particularly to a liquefied gas dripping structure and a liquefied gas carrier ship. Background Art

[0002] In recent years, the demand for cryogenic liquefied gas carrier ships, especially ships such as liquefied natural gas (LNG) carrier ships and very large ethane carrier (VLEC) ships, is increasing. Generally, cryogenic liquefied gas carrier ships are equipped with type A or type B liquefied gas tanks, which can store cryogenic liquefied gas to achieve the transportation of liquefied gas.

[0003] Among them, the drip tray is a local secondary shielding device specifically configured for IGC type B liquefied gas tanks. The IGC (The International Code For The Construction And Equipment Of Ships Carrying Liquefied Gases In Bulk) stipulates that when a crack leakage occurs in a type B liquefied gas tank, the cryogenic liquid can be guided to a designated position and received by a container installed there to prevent the cryogenic liquid from touching the hull structure. Moreover, its storage volume should ensure the leakage volume of the liquefied gas tank for 15 days.

[0004] Currently, in the limited applications of type B liquefied gas tanks, the function of the drip tray is limited to meeting the basic requirements of the IGC. It is usually a lidless structure made of stainless steel, with a splash-proof partition inside, and the bottom is isolated from the hull by wood.

[0005] However, the conventional drip tray has a large volume. To prevent overflow during rolling, the depth of the drip tray cannot be too shallow. For the protection of the hull, the drip tray and the hull are usually isolated by wood. This results in the need to increase the distance between the bottom of the type B liquefied gas tank and the double bottom of the hull, thereby reducing the utilization rate of the hull space. Summary of the Invention

[0006] Based on this, in view of the problem that the large volume of the conventional drip tray leads to an increase in structural dimensions and a reduction in the utilization rate of the hull space, it is necessary to provide a liquefied gas dripping structure and a liquefied gas carrier ship that can guide and block cryogenic liquids, prevent cryogenic liquids from splashing, and avoid external overflow of cryogenic liquids. At the same time, it can also reduce the overall height and improve the utilization rate of the space of the liquefied gas carrier ship.

[0007] A liquefied gas dripping structure includes:

[0008] A drip box body having a receiving cavity; and

[0009] The guiding component is arranged in the drip box body and is inclined towards the direction close to the bottom wall of the drip box body. The end of the guiding component close to the bottom wall of the drip box body has a first communication hole. The guiding component can divide the accommodating cavity into a first cavity and a second cavity, and the first communication hole communicates the first cavity and the second cavity;

[0010] The first cavity can receive the dripping low-temperature liquid, and the guiding component can make the dripping liquid enter the second cavity through the first communication hole.

[0011] In an embodiment of the present application, the guiding component includes a plurality of guiding plates, and each guiding plate is inclined towards the direction close to the bottom wall of the drip box body and is arranged in the drip box body;

[0012] The edges of adjacent guiding plates are connected and enclose the first communication hole, or adjacent guiding plates and the side wall of the drip box body enclose the first communication hole.

[0013] In an embodiment of the present application, the liquefied gas drip structure further includes a supporting component, and the supporting component is arranged in the second cavity and supports the drip box body and the guiding component.

[0014] In an embodiment of the present application, the supporting component includes a plurality of supporting plates, and the plurality of supporting plates are spaced apart in the second cavity and support the drip box body and the guiding component;

[0015] Each supporting plate divides the second cavity into accommodating cavities, the accommodating cavities communicate with each other, and at least one accommodating cavity communicates with the first communication hole.

[0016] In an embodiment of the present application, one ends of the plurality of supporting plates are spaced apart and connected to the inner wall of the drip box body, and the other ends of the plurality of supporting plates are connected to each other. Each supporting plate has at least one second communication hole penetrating therethrough, and the second communication hole communicates adjacent accommodating cavities; or there is a preset gap between adjacent supporting plates to communicate adjacent accommodating cavities;

[0017] And / or, the supporting plate has a recess corresponding to the first communication hole, and the recess communicates the first communication hole and the accommodating cavity.

[0018] In an embodiment of the present application, the drip box body includes a supporting bottom plate and a plurality of supporting side plates, and the plurality of supporting side plates are sequentially and circumferentially connected to the periphery of the supporting bottom plate and enclose the accommodating cavity with the supporting bottom plate;

[0019] The guiding component is connected to the inner wall of the supporting side plate and has a preset gap with the end of the supporting side plate away from the supporting bottom plate, so as to divide the accommodating cavity into the first cavity and the second cavity.

[0020] In an embodiment of the present application, the thickness of the supporting bottom plate is 1.1 times to 10 times the thickness of the supporting side plate.

[0021] In an embodiment of the present application, the liquefied gas drip structure further includes a heat conducting component, the heat conducting component is arranged on the hull of the liquefied gas carrier and extends out of the hull, and the drip box body is arranged on the top of the heat conducting component;

[0022] The heat conducting component is used to transfer the heat of the hull to the drip box body.

[0023] In an embodiment of the present application, the heat conducting component includes a first heat conducting piece and a second heat conducting piece, the first heat conducting piece is arranged in the hull, the second heat conducting piece is located above the hull and is arranged on the first heat conducting piece, and the drip box body is arranged on the second heat conducting piece;

[0024] And / or, the liquefied gas drip structure further includes a heat insulating component, the heat insulating component is arranged on the hull and surrounds the periphery of the heat conducting component, and the heat insulating component is used to prevent the heat conducting component from transferring heat to the hull.

[0025] A liquefied gas carrier includes a hull, a liquefied gas tank and the liquefied gas drip structure according to any one of the above technical features;

[0026] The liquefied gas drip structure is arranged on the hull, and the liquefied gas tank is arranged on the hull and is located above the liquefied gas drip structure.

[0027] After adopting the above technical solution, the present application has at least the following technical effects:

[0028] In the liquefied gas drip structure and the liquefied gas carrier of the present application, in the liquefied gas drip structure, the guiding component is arranged in the accommodating cavity of the drip box body and divides the accommodating cavity into the first cavity and the second cavity. Moreover, the guiding component is inclined towards the direction close to the bottom wall of the drip box body, and one end of the guiding component close to the bottom wall of the drip box has a first communication hole, and the first communication hole communicates the first cavity and the second cavity. In this way, after the low-temperature liquid drops into the first cavity, the low-temperature liquid can flow along the guiding component and enter the second cavity through the first communication hole.

[0029] In this liquefied gas leakage structure, an inclined guiding component is arranged in the leakage box body, so that the liquefied gas leakage structure forms a double-layer structure. In this way, the inclined guiding component can guide the low-temperature liquid in the first cavity to enter the second cavity through the first communication hole, facilitating the storage of the low-temperature liquid in the second cavity and preventing the low-temperature liquid from splashing during the dripping process. At the same time, the guiding component can block the low-temperature liquid in the second cavity to prevent the low-temperature liquid from overflowing when the liquefied gas carrier sways. In this way, through the guiding and blocking effects of the guiding component, the height of the leakage box body can be reduced, thereby reducing the overall height and volume of the liquefied gas leakage structure.

[0030] When this liquefied gas leakage structure is applied to a liquefied gas carrier, the distance between the liquefied gas tank and the hull can be reduced, improving the space utilization rate of the liquefied gas carrier. Brief Description of the Drawings

[0031] Figure 1 It is a top view of the liquefied gas leakage structure according to an embodiment of the present application.

[0032] Figure 2 is Figure 1 a longitudinal sectional view of the liquefied gas leakage structure shown.

[0033] Figure 3 is Figure 2 a schematic diagram of the liquefied gas leakage structure shown arranged on the hull.

[0034] Wherein: 100, liquefied gas leakage structure; 110, leakage box body; 111, first cavity; 112, second cavity; 113, support bottom plate; 114, support side plate; 120, guiding component; 121, first communication hole; 122, guiding plate; 130, support component; 131, support plate; 132, second communication hole; 133, recessed part; 140, heat-conducting component; 141, first heat-conducting piece; 142, second heat-conducting piece; 150, heat-insulating piece; 200, hull. Detailed Embodiments

[0035] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0037] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present application, unless otherwise clearly specified and limited, if there are terms such as "mounted", "connected", "connected to", "fixed", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0040] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0041] It can be understood that the liquefied gas drip tray is a local secondary shielding device specifically configured for IGC Type B liquefied gas tanks. IGC (The International Code For The Construction And Equipment Of Ships Carrying Liquefied Gases In Bulk) stipulates that when a crack leak occurs in a Type B liquefied gas tank, the cryogenic liquid can be directed to a designated location and received by a container installed there to prevent the cryogenic liquid from touching the hull structure. Moreover, its storage volume should ensure the leakage volume of the liquefied gas tank for 15 days.

[0042] Currently, in the limited applications of Type B liquefied gas tanks, the function of the drip tray is limited to meeting the basic requirements of IGC. It is usually a lidless structure made of stainless steel, with a splash-proof partition inside, and the bottom is isolated from the hull by wood. However, the conventional drip tray has a relatively large volume. To prevent overflow during a roll, the depth of the drip tray cannot be too shallow. For the protection of the hull, the drip tray and the hull are usually isolated by wood. This results in the need to increase the distance between the bottom of the Type B liquefied gas tank and the double bottom of the hull, thereby reducing the utilization rate of the hull space.

[0043] For this reason, referring to Figures 1 to 3 , this application provides a novel liquefied gas drip structure 100, which is applied to a liquefied gas ship and disposed on the hull 200 of the liquefied gas ship. Figure 1 It is a top view of the liquefied gas drip structure 100 according to an embodiment of this application. Figure 2 For Figure 1 the longitudinal sectional view of the liquefied gas drip structure 100 shown in Figure 3 For Figure 2 the schematic diagram of the liquefied gas drip structure 100 shown in disposed on the hull 200.

[0044] A liquefied gas carrier is a liquid cargo ship specifically designed to transport liquefied gas. The liquefied gas carrier includes a hull 200 and liquefied gas tanks. The liquefied gas tanks are arranged on the hull 200 and are used to store the transported liquefied gas, enabling the long-distance transportation of liquefied gas.

[0045] If there are cracks in the liquefied gas tanks, the liquefied gas will seep out and drip through the cracks. Generally, the temperature of the liquefied gas in the liquefied gas tanks is relatively low. After the liquefied gas drips, it will form cryogenic liquid. Therefore, in the present application, a liquefied gas drip structure 100 of the present application is provided below the liquefied gas tanks and above the hull 200.

[0046] That is, the liquefied gas drip structure 100 is arranged between the liquefied gas tanks and the hull 200. The cryogenic liquid dripping from the liquefied gas tanks is received through the liquefied gas drip structure 100 of the present application, preventing the cryogenic liquid from directly dripping onto the hull 200, and further avoiding the spread of the cryogenic liquid on the hull 200.

[0047] It can be understood that the type B liquefied gas tank is a type of independent liquefied gas cargo tank. Model tests, sophisticated analysis software and methods are required to determine its stress level, fatigue life and crack propagation characteristics. The designed evaporation pressure should be less than 0.07 MPa. If the designed temperature of the liquid cargo is lower than -10°C under atmospheric pressure, local secondary shielding should be provided.

[0048] The liquefied gas drip structure 100 of the present application is mainly applied to type B liquefied gas tanks and is mainly used to receive the cryogenic liquid dripping from type B liquefied gas tanks. Of course, in other embodiments of the present application, the liquefied gas drip structure 100 can also be applied to other types of liquefied gas tanks. The present application only takes the application of the liquefied gas drip structure 100 to liquefied gas tanks as an example for illustration.

[0049] The liquefied gas drip structure 100 of the present application can guide and block the cryogenic liquid, prevent the cryogenic liquid from splashing, and avoid the spillage of the cryogenic liquid. At the same time, it can also reduce the overall height and improve the space utilization rate of the liquefied gas carrier. The following introduces the specific structure of the liquefied gas drip structure 100 of an embodiment.

[0050] See Figure 1 and Figure 2, in one embodiment, the liquefied gas leakage structure 100 includes a leakage box body 110 and a guiding member 120. The leakage box body 110 has a receiving cavity (not shown). The guiding member 120 is disposed in the leakage box body 110 and is inclined toward the direction close to the bottom wall of the leakage box body 110. The end of the guiding member 120 close to the bottom wall of the leakage box body 110 has a first communication hole 121. The guiding member 120 can divide the receiving cavity into a first cavity 111 and a second cavity 112. The first communication hole 121 communicates the first cavity 111 and the second cavity 112. The first cavity 111 can receive the dripping cryogenic liquid, and the guiding member 120 can make the dripping liquid enter the second cavity 112 through the first communication hole 121.

[0051] The leakage box body 110 is the main structure of the liquefied gas leakage structure 100, and the leakage box body 110 can receive the cryogenic liquid dripping from the liquefied gas tank. The top of the leakage box body 110 has an opening and extends to the middle area of the leakage box body 110, making the leakage box body 110 a hollow box body structure. The hollow inner cavity of the leakage box body 110 is the receiving cavity, and the cryogenic liquid is received through the receiving cavity.

[0052] The guiding member 120 is disposed in the receiving cavity of the leakage box body 110 and is inclined in the leakage box body 110. The edge of the guiding member 120 is connected to the side wall of the leakage box body 110 and is inclined toward the direction close to the bottom wall of the leakage box body 110. That is to say, the guiding member 120 is inclined from the top to the bottom.

[0053] It should be noted that this application takes Figure 2 and Figure 3 the up, down, left, and right directions shown as the reference. In Figure 2 and Figure 3 , the leakage box body 110 has a certain size in the height direction, and the left and right directions of the leakage box body 110 are the width directions. The up, down, left, and right directions will not be elaborated hereinafter.

[0054] After the guiding member 120 is disposed in the leakage box body 110, the guiding member 120 can divide the receiving cavity of the leakage box body 110 into a first cavity 111 and a second cavity 112. The first cavity 111 is located above the second cavity 112. That is, the space above the guiding member 120 is the first cavity 111, and the cavity below the guiding member 120 is the second cavity 112. The first cavity 111 is used to receive the cryogenic liquid, and the second cavity 112 is used to store the cryogenic liquid.

[0055] The end of the guiding member 120 close to the bottom wall of the drip box body 110 has a first communication hole 121. The first communication hole 121 can communicate the first cavity 111 with the second cavity 112. That is to say, the first communication hole 121 is located at the lowest point of the guiding member 120. In this way, the low-temperature liquid in the first cavity 111 can flow along the guiding member 120 and enter the second cavity 112 through the first communication hole 121.

[0056] Generally, the liquefied gas drip structure 100 is arranged below the liquefied gas tank. When the liquefied gas tank leaks low-temperature liquid through cracks, the low-temperature liquid can drip into the first cavity 111. Since the guiding member 120 is inclined, the guiding member 120 can guide and direct the low-temperature liquid, so that the low-temperature liquid flows along the guiding member 120.

[0057] Since the first communication hole 121 is located at the lowest point of the guiding member 120, at this time, the guiding member 120 can guide the low-temperature liquid in the first cavity 111 into the first communication hole 121, and then the low-temperature liquid can flow into the second cavity 112 through the first communication hole 121, and the low-temperature liquid is stored through the second cavity 112.

[0058] Moreover, due to the guiding effect of the guiding member 120, no accumulation of low-temperature liquid will occur in the first cavity 111. In this way, when the liquefied gas tank continuously drips low-temperature liquid, since no low-temperature liquid will accumulate in the first cavity 111, no splashing will occur when the low-temperature liquid drips, avoiding the low-temperature liquid from splashing to the outside of the drip box body 110.

[0059] At the same time, the guiding member 120 is above the second cavity 112, and the guiding member 120 can block the low-temperature liquid in the second cavity 112. When the liquefied gas ship shakes, the guiding member 120 can limit the low-temperature liquid in the second cavity 112, avoiding the low-temperature liquid from overflowing from the edge of the drip box body 110 and preventing the liquefied gas in the liquefied gas drip structure 100 from spilling.

[0060] In this way, after the guiding member 120 is arranged on the drip box body 110, the guiding member 120 divides the drip box body 110 into a first cavity 111 and a second cavity 112, making the liquefied gas drip structure 100 in the form of a double-layer structure. In this way, the guiding member 120 can guide the dripping liquid into the second cavity 112 to avoid splashing, and at the same time, the guiding member 120 can also block the low-temperature liquid to prevent the low-temperature liquid from overflowing.

[0061] Moreover, after the liquefied gas leakage structure 100 is of a double-layer structure, splashing and overflow of the cryogenic liquid will not occur. In this way, the height dimension of the drip box body 110 can be appropriately reduced. That is, the height dimension of the drip box body 110 can be smaller, thereby reducing the overall height of the liquefied gas leakage structure 100 and improving the space utilization rate of the liquefied gas carrier.

[0062] In the liquefied gas leakage structure 100 of the above embodiment, an inclined guiding member 120 is provided in the drip box body 110 to make the liquefied gas leakage structure 100 form a double-layer structure. In this way, the inclined guiding member 120 can guide the cryogenic liquid in the first cavity 111 to enter the second cavity 112 through the first communication hole 121, facilitating the storage of the cryogenic liquid in the second cavity 112 and preventing splashing during the dripping process of the cryogenic liquid.

[0063] At the same time, the guiding member 120 can block the cryogenic liquid in the second cavity 112 to prevent the cryogenic liquid from overflowing when the liquefied gas carrier shakes. In this way, through the guiding and blocking effects of the guiding member 120, the height of the drip box body 110 can be reduced, thereby reducing the overall height and volume of the liquefied gas leakage structure 100.

[0064] In one embodiment, the drip box body 110 absorbs heat to evaporate the cryogenic liquid in the second cavity 112. The liquefied gas leakage structure 100 of the present application is arranged on the hull 200, and the heat of the seawater can be indirectly transferred to the drip box body 110 to heat and evaporate the cryogenic liquid in the second cavity 112.

[0065] Generally, the liquefied gas stored in the liquefied gas tank is cryogenic liquefied gas, and the temperature range of the liquefied gas is usually between -175°C and -269°C. When the liquefied gas leaks out of the liquefied gas tank and drips onto the drip box body 110, the temperature of the cryogenic liquid in the drip box body 110 will also be relatively low, which is much lower than the temperature of the hull 200.

[0066] The hull 200 sails in seawater. Generally, the temperature of the seawater is greater than 0°C, and thus the temperature of the seawater is also much greater than the temperature of the cryogenic liquid. In this way, the heat of the seawater can be indirectly transferred into the drip box body 110. Since the temperature of the seawater is much greater than the temperature of the cryogenic liquid, the cryogenic liquid can absorb the heat of the seawater and then evaporate.

[0067] That is to say, the liquefied gas leakage structure 100 of the present application uses the latent heat of the seawater to transfer heat to the cryogenic liquid, so that the cryogenic liquid can be heated and evaporated in the drip box body 110. In this way, the drip box body 110 can store the cryogenic liquid droplets while evaporating the cryogenic liquid.

[0068] In this way, the drip box body 110 does not need to be provided with a large volume, so that the drip box body 110 has the characteristics of small height and small volume, thereby reducing the height and volume of the liquefied gas drip structure 100, reducing the space occupied by the liquefied gas drip structure 100 below the liquefied gas tank, and improving the space utilization rate of the liquefied gas ship.

[0069] It should be noted that the structures of the guiding component 120 and the drip box body 110 are introduced here first, and how to transfer the heat of seawater to the drip box body 110 will be described in detail later. And the heat transfer in this application actually refers to the heat transfer process with a temperature higher than that of the low-temperature liquid, and the description of heat will not be repeated later.

[0070] See Figure 1 and Figure 2 , in one embodiment, the guiding component 120 includes a plurality of guiding plates 122, and each guiding plate 122 is inclined in the direction close to the bottom wall of the drip box body 110 and arranged in the drip box body 110. The edges of adjacent guiding plates 122 are connected and enclose the first communication hole 121.

[0071] The plurality of guiding plates 122 are spliced and connected to form the guiding component 120. One end of each guiding plate 122 is connected to the side wall of the drip box body 110, and the other end of each guiding plate 122 extends towards the middle area of the drip box body 110 and is inclined downward, and the side edges of adjacent guiding plates 122 are connected.

[0072] There is a gap at the other ends of the plurality of guiding plates 122 to form the first communication hole 121. In this way, after the plurality of guiding plates 122 are spliced and connected, a structure with a low middle and high edges is formed. That is, the guiding component 120 is generally in the shape of a funnel, and the first communication hole 121 is located in the middle area of the guiding component 120.

[0073] When the low-temperature liquid drops onto the guiding plate 122, the low-temperature liquid can flow along the guiding plate 122 and enter the second cavity 112 through the first communication hole 121. Moreover, no matter which guiding plate 122 the low-temperature liquid drops onto, the low-temperature liquid can flow along the corresponding guiding plate 122, and there will be no accumulation of low-temperature liquid.

[0074] In one embodiment, the shapes and sizes of the guiding plates 122 are exactly the same. In this way, after the guiding plates 122 are spliced, the guiding component 120 can be in a regular shape, which is convenient for the low-temperature liquid to flow. At the same time, it can also ensure that the flow rates of the low-temperature liquid on the guiding plates 122 are basically the same.

[0075] Of course, in other embodiments of the present application, the shapes and / or sizes of at least some of the guiding plates 122 are different, as long as an inclined guiding component 120 can be formed.

[0076] In one embodiment, the inclination angle of the guide plate 122 relative to the horizontal plane ranges from 1° to 75°. After the inclination angle of the guide plate 122 is within the above range, the guide plate 122 can guide the flow of cryogenic liquid, facilitating the cryogenic liquid to enter the second cavity 112 along the guide plate 122.

[0077] Preferably, the inclination angle of the guide plate 122 ranges from 1° to 30°. In this way, while ensuring the guiding of the cryogenic liquid by the guide plate 122, the size of the guide plate 122 extending into the second cavity 112 can be minimized as much as possible, ensuring that the second cavity 112 has sufficient volume to accommodate the cryogenic liquid.

[0078] In this embodiment, the inclination angle of the guide plate 122 is 10°. Of course, in other embodiments of the present application, the inclination angle of the guide plate 122 can also be other values.

[0079] Of course, in other embodiments of the present application, the adjacent guide plate 122 and the side wall of the drip box body 110 enclose the first communication hole 121. That is to say, one side edge of the guide plate 122 is connected to the side wall of the drip box body 110, and the other side edge of the guide plate 122 extends toward the inner wall of the other side of the drip box body 110. At this time, each guide plate 122 and the inner wall of the drip box body 110 enclose the first communication hole 121.

[0080] In this embodiment, the number of the guide plates 122 is four. The shapes of the four guide plates 122 are the same, and the guide plates 122 are arranged substantially in a triangular shape. The hypotenuse of the guide plate 122 is connected to the side wall of the drip box body 110, and the two right-angled sides of the guide plate 122 are connected to the side edges of the adjacent guide plates 122. And, the right-angled ends of the guide plates 122 are obliquely cut so that the right-angled ends of each guide plate 122 enclose the first communication hole 121.

[0081] That is to say, the guide plate 122 is arranged in an isosceles trapezoid shape. The bottom edge of the guide plate 122 is connected to the side wall of the drip box body 110, the side edges of the guide plate 122 are connected to the side edges of the adjacent guide plates 122, the top edges of the guide plate 122 and the top edges of the other guide plates 122 enclose the first communication hole 121, and the guide plate 122 is inclined from the bottom edge to the top edge to guide the cryogenic liquid into the first communication hole 121.

[0082] And, in this embodiment, the shape of the first communication hole 121 is quadrilateral. Of course, in other embodiments of the present application, the number of the guide plates 122 can also be other numbers, and the first communication hole 121 can also be circular, triangular or other shapes.

[0083] See Figure 2 and Figure 3, in one embodiment, the liquefied gas leakage structure 100 further includes a support member 130, which is disposed in the second cavity 112 and supports the leakage box body 110 and the guiding member 120. The support member 130 is disposed in the second cavity 112 and extends in the height direction.

[0084] The bottom of the support member 130 is connected to the bottom wall of the leakage box body 110, and the top of the support member 130 is connected to the lower surface of the guiding member 120. In this way, the support member 130 can support the guiding member 120 in the second cavity 112 to ensure the reliability of the guiding member 120 during operation.

[0085] At the same time, the support member 130 can also increase the heat transfer area of the leakage box body 110. After the heat of the seawater is transferred to the leakage box body 110, the leakage box body 110 can transfer the heat to the low-temperature liquid therein, and the leakage box body 110 can also transfer the heat to the support member 130 so that the support member 130 transfers the heat to the low-temperature liquid.

[0086] In this way, the support member 130 of the present application can reliably support the guiding member 120 in the leakage box body 110, avoid the impact of the impact force of the dripping of the low-temperature liquid on the guiding member 120, and thus avoid damage to the guiding member 120. At the same time, the support member 130 increases the heat transfer area of the liquefied gas leakage structure 100, further enhancing the evaporation performance of the low-temperature liquid.

[0087] See Figure 2 and Figure 3 , in one embodiment, the support member 130 includes a plurality of support plates 131, and the plurality of support plates 131 are spaced apart in the second cavity 112 and support the leakage box body 110 and the guiding member 120. Each of the support plates 131 divides the second cavity 112 into accommodation cavities, and the accommodation cavities communicate with each other, and at least one of the accommodation cavities communicates with the first communication hole 121.

[0088] The plurality of support plates 131 extend in the height direction and are located in the second cavity 112, and the plurality of support plates 131 are spaced apart in the second cavity 112. And the top of each support plate 131 is connected to the lower surface of the guiding member 120, and the bottom of each support plate 131 is connected to the lower surface of the leakage box body 110, and the reliable support of the guiding member 120 is realized through the plurality of support plates 131, and the heat transfer area is increased.

[0089] After multiple support plates 131 are disposed in the second cavity 112, the multiple support plates 131 can divide the multiple accommodating cavities. The multiple accommodating cavities communicate with each other, and at least one accommodating cavity communicates with the first communication hole 121. In this way, after the cryogenic liquid in the first cavity 111 enters at least one accommodating cavity through the first communication hole 121, the cryogenic liquid can flow in each accommodating cavity, so that the temperatures of the cryogenic liquid in each accommodating cavity are substantially the same.

[0090] In this embodiment, the first communication hole 121 communicates with each accommodating cavity. In this way, the first communication hole 121 can respectively deliver the cryogenic liquid to each accommodating cavity. Of course, in other embodiments of the present application, the first communication hole 121 may also only communicate with some of the accommodating cavities.

[0091] At the same time, the support plate 131 can also block the cryogenic liquid. When the liquefied gas carrier shakes, the support plate 131 can block the cryogenic liquid, so that the cryogenic liquid is not likely to overflow, thereby reducing the height of the drip box body 110.

[0092] See Figure 2 and Figure 3 , in an embodiment, one ends of the multiple support plates 131 are connected to the inner wall of the drip box body 110 at intervals, the other ends of the multiple support plates 131 are connected to each other, and each support plate 131 has at least one second communication hole 132 penetrating therethrough, and the second communication hole 132 communicates with the adjacent accommodating cavities.

[0093] One ends of the multiple support plates 131 are connected to the side wall of the drip box body 110, and the other sides of the multiple support plates 131 are connected to each other. In this way, the multiple support plates 131 can divide the second cavity 112 into multiple independent accommodating cavities. Each accommodating cavity has at least one second communication hole 132, and the second communication hole 132 can communicate with two adjacent accommodating cavities.

[0094] In this way, after the cryogenic liquid enters at least one accommodating cavity through the first communication hole 121, the cryogenic liquid in each accommodating cavity can flow evenly through the second communication hole 132, so that the amounts of the cryogenic liquid in each accommodating cavity are substantially uniform, avoiding too much cryogenic liquid in a certain accommodating cavity and preventing the cryogenic liquid in the accommodating cavity from overflowing.

[0095] In an embodiment, the shape of the second communication hole 132 is a partial circle, square, ellipse or other regular or irregular shapes. In this embodiment, the shape of the second communication hole 132 is a semi-circle and / or a quarter circle, etc. Of course, in other embodiments of the present application, the second communication hole 132 may also be a circle, square or other shapes.

[0096] In one embodiment, each support plate 131 is provided with at least two second communication holes 132. The at least two second communication holes 132 can be arranged at the bottom edge, side edge, etc. of the support plate 131. This can facilitate the flow of cryogenic liquid. Of course, in other embodiments of the present application, the number and position of the second communication holes 132 on each support plate 131 can also be other.

[0097] In another embodiment of the present application, there is a preset gap between adjacent support plates 131 to communicate adjacent accommodation cavities. That is to say, there is a gap between one end of the support plate 131 and the other support plates 131 to realize the communication of each accommodation cavity.

[0098] See Figure 2 , in one embodiment, the support plate 131 has a recess 133 corresponding to the first communication hole 121, and the recess 133 communicates the first communication hole 121 with the accommodation cavity. In this way, the support portion will not block the first communication hole 121 at the first communication hole 121, which is convenient for the first communication hole 121 to communicate with each accommodation cavity.

[0099] In this embodiment, the number of support plates 131 is four. The four support plates 131 are respectively arranged in the second cavity 112 along the diagonal direction of the drip box body 110, and the two support plates 131 on the same diagonal are connected. The top of each support plate 131 is connected between two adjacent guide plates 122. At the same time, the first communication hole 121 communicates with the four accommodation cavities and conveys cryogenic liquid to the four accommodation cavities.

[0100] In this way, the four support plates 131 can be arranged in the form of a cross rib plate in the second cavity 112. The four support plates 131 can support the guide plates 122. At the same time, they can also transfer the heat of the drip box body 110 to the cryogenic liquid in the second cavity 112 to increase the heat transfer area. And the support plate 131 can also block the cryogenic liquid in the corresponding accommodation cavity to prevent the cryogenic liquid from overflowing.

[0101] See Figure 2 and Figure 3 , in one embodiment, the drip box body 110 includes a support bottom plate 113 and a plurality of support side plates 114. The plurality of support side plates 114 are sequentially connected around the periphery of the support bottom plate 113 and enclose the accommodation cavity with the support bottom plate 113. The guiding member 120 is connected to the inner wall of the support side plate 114 and has a preset gap with the end of the support side plate 114 away from the support bottom plate 113 to divide the accommodation cavity into the first cavity 111 and the second cavity 112.

[0102] The supporting bottom plate 113 is located at the bottom. A plurality of supporting side plates 114 are arranged above the supporting bottom plate 113 and extend in the height direction, and the sides of adjacent supporting side plates 114 are connected. In this way, the supporting bottom plate 113 and the plurality of supporting side plates 114 can enclose a drip box body 110 in the shape of a box.

[0103] The space enclosed by the supporting bottom plate 113 and the plurality of supporting side plates 114 is an accommodation cavity. After the guiding component 120 is arranged in the drip box body 110, the guiding component 120 is connected to the side wall of the supporting side plate 114, and there is a certain distance between the guiding component 120 and the supporting bottom plate 113, and there is also a certain distance between the guiding component 120 and the top of the supporting side plate 114.

[0104] In this way, the guiding component 120 can divide the accommodation cavity of the drip box body 110 into a first cavity 111 and a second cavity 112, so that the liquefied gas drip structure 100 forms a double-layer structure. After the cryogenic liquid drops into the first cavity 111, the cryogenic liquid can move along the guiding component 120 and enter the second cavity 112 through the first communication hole 121.

[0105] See Figure 2 , in an embodiment, the thickness of the supporting bottom plate 113 is 1.1 times to 10 times the thickness of the supporting side plate 114. That is to say, the supporting bottom plate 113 is thickened and the supporting bottom plate 113 is a thick plate. In this way, the supporting bottom plate 113 which is a thick plate can improve the structural strength of the drip box body 110, and further improve the ability of the liquefied gas drip structure 100 to resist low-temperature impact.

[0106] In an embodiment, the drip box body 110, the supporting component 130 and the guiding component 120 are made of stainless steel material. In this way, the drip box body 110, the supporting component 130 and the guiding component 120 can have a certain heat transfer ability, which is convenient for transferring heat to the cryogenic liquid. At the same time, it can also ensure that the drip box body 110, the supporting component 130 and the guiding component 120 have a certain structural strength and ensure the impact resistance of the liquefied gas drip structure 100.

[0107] Of course, in other embodiments of the present application, the drip box body 110, the supporting component 130 and the guiding component 120 can also be made of other materials that can both achieve heat transfer and ensure structural strength.

[0108] See Figure 2 and Figure 3, in one embodiment, the liquefied gas leakage structure 100 further includes a heat conducting component 140, which is disposed on the hull 200 of the liquefied gas carrier and extends out of the hull 200, and the drip box body 110 is disposed on the top of the heat conducting component 140. The heat conducting component 140 is used to transfer the heat of the hull 200 to the drip box body 110.

[0109] The heat conducting component 140 is disposed on the hull 200 in the height direction. The bottom of the heat conducting component 140 is connected to the bottom of the hull 200, and the top of the heat conducting component 140 passes through the top of the hull 200 and extends out. The drip box body 110 is disposed on the top of the heat conducting component 140. That is, there is a certain distance between the drip box body 110 and the hull 200, and the drip box body 110 is supported by the heat conducting component 140.

[0110] When the liquefied gas carrier is sailing in seawater, the heat of the seawater can be transferred to the heat conducting component 140 through the bottom of the hull 200. Then, the heat conducting component 140 can transfer the heat to the bottom of the drip box body 110, and the drip box body 110 can transfer the heat to the cryogenic liquid in the second cavity 112 and the support component 130. The support component 130 can also transfer heat to the cryogenic liquid in the second cavity 112.

[0111] In this way, the heat conducting component 140 can transfer the heat of the seawater to the cryogenic liquid in the second cavity 112, causing the cryogenic liquid to evaporate by heating. After the cryogenic liquid evaporates, it will not occupy the space of the second cavity 112, and the volume of the second cavity 112 can be appropriately reduced, while ensuring the ability of the second cavity 112 to store the cryogenic liquid.

[0112] In this way, for the liquefied gas leakage structure 100 of the present application, the heat conducting component 140 is used to transfer the heat of the seawater to the drip box body 110, making full use of the latent heat of the ambient seawater to heat the cryogenic liquid in the drip box body 110 and enhancing the natural evaporation ability of the cryogenic liquid.

[0113] See Figure 2 and Figure 3 , in one embodiment, the heat conducting component 140 includes a first heat conducting member 141 and a second heat conducting member 142. The first heat conducting member 141 is disposed in the hull 200, the second heat conducting member 142 is located above the hull 200 and is disposed on the first heat conducting member 141, and the drip box body 110 is disposed on the second heat conducting member 142.

[0114] The first heat conducting member 141 is arranged in the hull 200 along the height direction. The bottom of the first heat conducting member 141 is connected to the bottom of the hull 200, and the top of the first heat conducting member 141 is connected to the top of the hull 200. The second heat conducting member 142 is located above the hull 200 and is connected to the top of the first heat conducting member 141. The top of the second heat conducting member 142 is connected to the liquefied gas leakage structure 100.

[0115] In this way, the first heat conducting member 141 can absorb the heat of seawater and transfer the heat of seawater to the second heat conducting member 142. Furthermore, the second heat conducting member 142 transfers the heat of seawater to the drip box body 110. In this way, the latent heat of environmental seawater can be fully utilized to heat the low-temperature liquid in the drip box body 110, and the natural evaporation ability of the low-temperature liquid is enhanced.

[0116] In one embodiment, the first heat conducting member 141 is a heat conducting rod, and the second heat conducting member 142 is a heat conducting seat. The cross-sectional area of the heat conducting seat is larger than that of the heat conducting rod. In this way, the contact area between the drip box body 110 and the second heat conducting member 142 can be increased, and the heat transfer effect can be ensured.

[0117] Of course, in other embodiments of the present application, the first heat conducting member 141 and the second heat conducting member 142 can also be both heat conducting plates, heat conducting rods, heat conducting seats or other components capable of realizing heat transfer.

[0118] In one embodiment, both the first heat conducting member 141 and the second heat conducting member 142 are made of aluminum alloy material. In this way, the first heat conducting member 141 and the second heat conducting member 142 have good heat conducting ability, which is convenient for heat transfer. At the same time, the stable support of the liquefied gas leakage structure 100 can also be realized.

[0119] See Figure 2 and Figure 3 , in one embodiment, the liquefied gas leakage structure 100 further includes a heat insulation member 150. The heat insulation member 150 is arranged on the hull 200 and surrounds the periphery of the heat conducting component 140. The heat insulation member 150 is used to prevent the heat conducting component 140 from transferring heat to the hull 200.

[0120] The heat insulation member 150 is arranged in the hull 200 and is arranged on the periphery of the first heat conducting member 141 and the second heat conducting member 142. The heat insulation member 150 can minimize the heat transfer between the heat conducting component 140 and the hull 200 as much as possible, avoid the loss of heat transferred by the first heat conducting member 141 and the second heat conducting member 142, and enhance the evaporation ability of the low-temperature liquid.

[0121] Meanwhile, the temperature of the cryogenic liquid is relatively low, and its cold energy will also be transferred reversely through the second heat conducting member 142. After the heat insulation member 150 is provided, the heat insulation member 150 can prevent the cold energy of the cryogenic liquid from being transferred to the hull 200. Generally, the temperature of the cryogenic liquid is relatively low, and if the cold energy of the cryogenic liquid is transferred to the hull 200, there may be potential safety hazards.

[0122] After the heat insulation member 150 is provided on the hull 200 in this application, the transfer of the cold energy of the cryogenic liquid to the hull 200 can be minimized as much as possible, ensuring that the temperature of the hull 200 is at room temperature. Moreover, even if there is cold energy transfer, due to the limitation of the heat insulation member 150, the temperature of the hull 200 will not deviate too much, avoiding damage to the operators caused by too low temperature and reducing potential safety hazards.

[0123] Optionally, the heat insulation member 150 is made of E-grade steel plate. Of course, in other embodiments of this application, the heat insulation member 150 can also be made of other materials that can prevent cold energy from being transferred to the hull 200.

[0124] In the liquefied gas leakage structure 100 of this application, the guiding member 120 is inclined and arranged in the leakage box body 110, making the liquefied gas leakage structure 100 form a double-layer structure. When the cryogenic liquid leaks from the liquefied gas tank, the cryogenic liquid drips into the first cavity 111. At this time, the cryogenic liquid can flow along the guiding member 120 and then enter the second cavity 112 through the first communication hole 121.

[0125] In this way, the guiding member 120 can guide the cryogenic liquid to be stored in the second cavity 112, avoiding the accumulation of the cryogenic liquid on the guiding member 120, and thus avoiding splashing when the cryogenic liquid drips. At the same time, the guiding member 120 can also block the cryogenic liquid in the second cavity 112 to prevent the cryogenic liquid from overflowing.

[0126] In this way, the height of the leakage box body 110 can be appropriately reduced, and then the height of the entire liquefied gas leakage structure 100 can be reduced. At the same time, the support bottom plate 113 of the leakage box body 110 is thickened to improve the structural strength of the leakage box body 110, and then the ability of the leakage box body 110 to resist low-temperature impact is improved.

[0127] And, the leakage box body 110 is supported on the hull 200 through the heat conducting member 140, and the heat conducting member 140 can transfer the heat of the seawater to the cryogenic liquid to fully utilize the latent heat of the seawater to heat the cryogenic liquid in the leakage box body 110 and strengthen the evaporation of the cryogenic liquid.

[0128] Moreover, the support member 130 is disposed in the second cavity 112 and supports the drip box body 110 and the guiding member 120. The heat of the drip box body 110 is transferred to the low-temperature liquid and the support member 130 in the second cavity 112, and the support member 130 can also transfer heat to the low-temperature liquid, increasing the heat transfer area of the liquefied gas drip structure 100 to the low-temperature liquid.

[0129] In this way, the latent heat of the seawater environment is utilized to strengthen the evaporation ability of the low-temperature liquid in the drip box body 110, reducing the amount of the low-temperature liquid in the second cavity 112 and equivalently expanding the volume of the second cavity 112. In this way, the volume of the second cavity 112 can be appropriately reduced, and then the volume of the entire drip box body 110 can be reduced to reduce the volume of the entire liquefied gas drip structure 100.

[0130] In the liquefied gas drip structure 100 of the present application, the guiding member 120 is disposed in the drip box body 110, making the liquefied gas drip structure 100 a double-layer structure, so that the low-temperature liquid will not splash and overflow. Moreover, heat is transferred to the drip box body 110 through the heat conducting member 140 to strengthen the evaporation ability of the low-temperature liquid. In this way, the height and volume of the drip box body 110 can be reduced, and then the volume of the entire liquefied gas drip structure 100 can be reduced, improving the space utilization rate of the liquefied gas carrier.

[0131] The present application also provides a liquefied gas carrier, which includes a hull 200, a liquefied gas tank, and the liquefied gas drip structure 100 as described in any of the above embodiments. The liquefied gas drip structure 100 is disposed on the hull 200, and the liquefied gas tank is disposed on the hull 200 and is located above the liquefied gas drip structure 100.

[0132] After the liquefied gas carrier of the present application adopts the liquefied gas drip structure 100 of the above embodiment, it can prevent the low-temperature liquid from splashing and overflowing while realizing the collection of the low-temperature liquid, and can reduce the height and volume of the entire liquefied gas drip structure 100, improving the space utilization rate of the liquefied gas carrier.

[0133] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0134] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A liquefied gas leakage structure, characterized in that Comprising: A drip box body having a receiving cavity; and A guiding member disposed in the drip box body and inclined towards the bottom wall of the drip box body. The end of the guiding member close to the bottom wall of the drip box body has a first communication hole. The guiding member can divide the receiving cavity into a first cavity and a second cavity, and the first communication hole communicates the first cavity with the second cavity; The first cavity can receive the dripping low-temperature liquid, and the guiding member can cause the dripping liquid to enter the second cavity through the first communication hole.

2. The liquefied gas leakage structure according to claim 1, characterized in that, The guiding member includes a plurality of guiding plates, and each guiding plate is inclined towards the bottom wall of the drip box body and disposed in the drip box body; The edges of adjacent guiding plates are connected to enclose the first communication hole, or adjacent guiding plates and the side wall of the drip box body enclose the first communication hole.

3. The liquefied gas leakage structure according to claim 1, wherein The liquefied gas drip structure further includes a supporting member disposed in the second cavity and supporting the drip box body and the guiding member.

4. The liquefied gas leakage structure according to claim 3, wherein, The supporting member includes a plurality of supporting plates spaced apart in the second cavity and supporting the drip box body and the guiding member; Each of the supporting plates divides the second cavity into accommodation cavities. The accommodation cavities communicate with each other, and at least one accommodation cavity communicates with the first communication hole.

5. The liquefied gas drip structure according to claim 4, characterized in that, One ends of the plurality of supporting plates are spaced apart and connected to the inner wall of the drip box body, and the other ends of the plurality of supporting plates are connected to each other. Each supporting plate has at least one second communication hole penetrating therethrough, and the second communication hole communicates the adjacent accommodation cavities; or there is a preset gap between adjacent supporting plates to communicate the adjacent accommodation cavities; And / or, the supporting plate has a recess corresponding to the first communication hole, and the recess communicates the first communication hole with the accommodation cavity.

6. The liquefied gas leakage structure according to claim 1, wherein, The drip box body includes a supporting bottom plate and a plurality of supporting side plates. The plurality of supporting side plates are sequentially connected around the periphery of the supporting bottom plate and enclose the receiving cavity with the supporting bottom plate; The guiding member is connected to the inner wall of the supporting side plate and has a preset gap with the end of the supporting side plate away from the supporting bottom plate to divide the receiving cavity into the first cavity and the second cavity.

7. The liquefied gas leakage structure according to claim 6, wherein The thickness of the supporting bottom plate is 1.1 times to 10 times the thickness of the supporting side plate.

8. The liquefied gas leakage structure according to any one of claims 1 to 7, characterized in that, The liquefied gas drip structure further includes a heat-conducting member disposed on the hull of the liquefied gas carrier and protruding from the hull, and the drip box body is disposed on the top of the heat-conducting member; The heat-conducting member is used to transfer the heat of the hull to the drip box body.

9. The liquefied gas leakage structure according to claim 8, characterized in that, The heat-conducting member includes a first heat-conducting member and a second heat-conducting member. The first heat-conducting member is disposed in the hull, the second heat-conducting member is located above the hull and disposed on the first heat-conducting member, and the drip box body is disposed on the second heat-conducting member; And / or, the liquefied gas leakage structure further includes a heat insulation member, which is arranged on the hull and surrounds the periphery of the heat conduction component, and the heat insulation member is used to prevent the heat conduction component from transferring heat to the hull.

10. A liquefied gas carrier, characterized in that, Comprising a hull, a liquefied gas tank, and the liquefied gas leakage structure according to any one of claims 1 to 9; The liquefied gas leakage structure is arranged on the hull, and the liquefied gas tank is arranged on the hull and located above the liquefied gas leakage structure.

Images