An adjustable diaphragm-type liquid tank anti-sloshing device

Abstract

This invention provides an adjustable membrane-type liquid tank sway reduction device, comprising a flexible membrane, a fixing component, and a buoyancy enhancement component. The fixing component is disposed on the inner cavity sidewall of the liquid tank. The buoyancy enhancement component includes a float. At least a portion of the edge of the flexible membrane is connected to the float. The float is detachably connected to the fixing component and can slide along the fixing component under buoyancy, so that one side surface of the flexible membrane adheres to the liquid surface. Multiple water-permeable holes are formed on the flexible membrane for returning accumulated liquid on the other side surface of the flexible membrane to the liquid tank. This solves the problems of poor sway reduction effect and difficulty in applying to different liquid tank depths and different ship roll amplitudes in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering, and in particular to an adjustable membrane liquid tank anti-sloshing device. Background Technology

[0002] With the deepening of trade globalization, the maritime transport industry occupies a pivotal position in transnational trade. As a means of transportation for ocean shipping, every ship, especially large LNG carriers, has ballast tanks, fuel tanks, and other free liquid surfaces. The presence of these free liquid surfaces can damage the ship's structure and, under special sea conditions, can even resonate with the ship's own rolling motion, leading to capsizing accidents. Therefore, improving anti-roll technology remains crucial in the field of ship design.

[0003] Researchers have proposed various sway reduction schemes for tanks containing free-floating fluid. For example, some scholars have proposed adding anti-sway baffles or perforated plates to the tanks, aiming to alter the fluid's motion frequency and distance it from the ship's dominant motion frequency. However, anti-sway baffles alter the overall structure of the ship, making modifications impossible once welding is complete. Other researchers have suggested incorporating porous foam structures into the tanks to dissipate fluid energy, but this method lacks adaptability to different tank depths and ship roll amplitudes, and its impact is limited. Therefore, these solutions have limited versatility.

[0004] Other researchers have achieved sloshing reduction in liquid tanks by adding porous media. For example, patent CN110873279A proposes an application in sloshing reduction of prefabricated wave-damping layer liquid tanks. It uses porous media technology to fill the steel cage with a porous media structure to dissipate liquid energy. The steel cages of this utility model are connected by rotatable components. The assembled wave-damping layer does not require additional anchoring or welding processes and has little impact on the overall integrity of the liquid tank itself. However, this technology cannot be changed with external sea conditions or liquid tank depth, and its effective range is small, so it cannot effectively suppress liquid surface movement.

[0005] It is evident that existing anti-sway devices suffer from poor anti-sway performance and are difficult to apply to different tank depths and ship roll amplitudes. Utility Model Content

[0006] This invention provides an adjustable membrane-type liquid tank anti-sway device, which solves the problems of poor anti-sway effect and difficulty in applying to different liquid tank depths and different ship roll amplitudes in the prior art.

[0007] This invention provides an adjustable membrane-type liquid tank anti-sway device, comprising a flexible membrane, a fixing component, and a buoyancy enhancement component.

[0008] The fixing component is located on the inner wall of the liquid tank, and the buoyancy enhancement component includes a float. At least a portion of the edge of the flexible film is connected to the float. The float is detachably connected to the fixing component and can slide along the fixing component under the action of buoyancy, so that one side surface of the flexible film is attached to the liquid surface.

[0009] The flexible membrane has multiple water-permeable holes, which are used to return the liquid accumulated on the other side of the flexible membrane to the liquid tank.

[0010] Optionally, the adjustable membrane-type liquid tank anti-sloshing device also includes a flow-blocking component; the first side of the flexible membrane is connected to the float, and the flow-blocking component includes a connecting rod and a flow-blocking cap, the first end of the connecting rod is connected to the middle of the flow-blocking cap, and the second end of the connecting rod is connected to the second side of the flexible membrane opposite to the first side; the two ends of the flow-blocking cap can move towards each other or away from each other around the first end of the connecting rod.

[0011] When the two ends of the flow-blocking cap move toward each other to the first position, the flow-blocking cap is in a closed state.

[0012] When the two ends of the flow-blocking cap move in opposite directions to the second position, the flow-blocking cap is in the open state.

[0013] Optionally, when both ends of the flow-blocking cap are in the second position, the flow-blocking element has a T-shaped structure.

[0014] Optionally, the buoyancy enhancement assembly also includes a float connected to the permeable hole, and / or, the float is connected between the first and second ends of the connecting rod.

[0015] Optionally, at least a portion of the edge of the flexible film is provided with a plurality of first fixing holes and a plurality of second fixing holes. The plurality of first fixing holes and the plurality of second fixing holes are respectively spaced apart along the axial direction of the float. The first fixing holes are located at the edge of the flexible film, and the second fixing holes are located on the side of the first fixing holes closer to the center of the flexible film. The first fixing holes and the second fixing holes are used to thread binding ropes through to wrap and bind at least a portion of the edge of the flexible film to the circumferential sidewall of the float.

[0016] Optionally, along the winding direction of the flexible film, at least some of the water-permeable holes are provided corresponding to the first fixing holes. The flexible film can be wound around the circumference of the float and attached to the circumferential side wall of the float and fixed by the first fixing holes and the corresponding water-permeable holes to accommodate the flexible film.

[0017] Optionally, the inner walls of the multiple water-permeable holes, the multiple first fixing holes, and the multiple second fixing holes are provided with an elastic protective layer.

[0018] Optionally, the fixing assembly includes a first column, a second column, a first float ring, a second float ring, a first column ring, a second column ring, a first limiting member, and a second limiting member; the first column and the second column are fixed to the inner cavity sidewall of the liquid tank;

[0019] The first float ring is sleeved on the outer wall of the first end of the float, the first column ring is sleeved on the circumferential outer wall of the first column, the first float ring passes through the first column ring, and the first limiting member is sleeved on the first end of the float to limit the first float ring to the first end of the float.

[0020] The second float ring is sleeved on the outer wall of the second end of the float, the second column ring is sleeved on the circumferential outer wall of the second column, the second float ring passes through the second column ring, and the second limiting member is sleeved on the second end of the float to limit the second float ring to the second end of the float.

[0021] The first column ring can slide along the side wall of the first column, and the second column ring can slide along the side wall of the second column.

[0022] Optionally, there are multiple flexible membranes, and the floats corresponding to the multiple flexible membranes are all located on the side of the flexible membrane close to the inner wall of the liquid tank.

[0023] Optionally, there are multiple pontoons, which are located on the second side of the corresponding flexible membrane and connected together.

[0024] The advantages of this utility model compared to the prior art are as follows:

[0025] 1. The adjustable membrane liquid tank anti-sway device provided by this utility model adopts a membrane flexible material. The structure itself has large deformation characteristics, high flexibility, and a large coverage area of ​​the free liquid surface. It can effectively suppress the fluid movement of the entire free liquid surface and can float freely with the water level change, unaffected by the change of liquid level height. Therefore, it can be applied to different liquid tank depths and different ship roll amplitudes.

[0026] 2. In the adjustable membrane liquid tank anti-sway device of this utility model embodiment, the free end (or can be understood as the second side) of the flexible membrane is connected by a flow-blocking component. The flow-blocking cap is controlled to close or open by the force of water flow, so that the flexible membrane can be automatically prevented from drifting to both sides of the tank wall without manual operation, thereby improving the anti-sway device's water flow resistance and thus having high anti-sway stability.

[0027] 3. The adjustable diaphragm liquid tank anti-sway device of this utility model has a float that is fixed to the inner wall of the liquid tank through a fixing component, which can greatly reduce the liquid level rise at the tank wall position and has a significant effect on reducing roll.

[0028] 4. In the adjustable membrane liquid tank anti-sway device of this utility model embodiment, the flexible membrane can be rolled around the circumference of the float and fixed by the water-permeable holes and fixing holes for storage. This structure can adjust the anti-sway performance of the device according to different sea conditions, further enriching the applicable scenarios of the adjustable membrane liquid tank anti-sway device in different sea conditions. It can also prevent the flexible membrane from being exposed to seawater impact for a long time when idle, thus playing a good protective role.

[0029] 5. The adjustable membrane liquid tank anti-sway device of this utility model connects the flexible membrane, float, and inner wall of the liquid tank together through the first column, the second column, the first float ring, the second float ring, the first column ring, the second column ring, the first limiting member, and the second limiting member. This not only ensures the flexibility of the flexible membrane to slide relative to the fixed components under the action of buoyancy, but also allows for easy disassembly. It can be removed when not in operation, making the entire device have the advantages of low cost, easy replacement, and lightweight structure. Attached Figure Description

[0030] Figure a The graphs show the free surface variation curves of the liquid tank at different locations, obtained through OpenFOAM calculation and analysis. The solid lines represent the liquid surface variation curves near the tank wall, and the dashed lines represent the liquid surface variation curves at the center of the tank.

[0031] Figure b This is a schematic diagram of the velocity distribution of liquid tank sloshing along water depth, obtained by OpenFOAM calculation and analysis.

[0032] Figure 1 This is a schematic diagram of the adjustable diaphragm liquid tank anti-sloshing device according to an embodiment of the present invention;

[0033] Figure 2 This is a partial structural schematic diagram of the adjustable diaphragm liquid tank anti-sloshing device according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the flow-blocking component in the adjustable membrane liquid tank anti-sloshing device of this utility model embodiment, wherein the flow-blocking cap is in a closed state;

[0035] Figure 4 This is a schematic diagram of the flow-blocking component in the adjustable membrane liquid tank anti-sloshing device of this utility model embodiment, wherein the flow-blocking cap is in the open state;

[0036] Figure 5 This is a schematic diagram of the structure of the first fixing hole, the second fixing hole, and the float in the adjustable membrane liquid tank anti-sway device of this utility model embodiment;

[0037] Figure 6This is a schematic diagram of the fixed component in the adjustable diaphragm liquid tank anti-sway device according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the disassembly tool for the adjustable diaphragm liquid tank anti-sloshing device according to an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Adjustable diaphragm-type liquid tank anti-sloshing device;

[0041] 10. Flexible film; 101. First flexible film; 102. Second flexible film; 103. Water-permeable hole; 104. First side; 105. Second side; 106. First fixing hole; 107. Second fixing hole;

[0042] 11. Fixing assembly; 111. First column; 112. Second column; 113. First float ring; 115. First column ring; 117. First limiting component;

[0043] 121. Floating rod; 122. Floating tube; 123. Rope;

[0044] 13. Flow-blocking component; 131. Connecting rod; 1311. First end; 1312. Second end; 132. Flow-blocking cap;

[0045] 2. Liquid tank;

[0046] 31. Wrench; 32. Joystick. Detailed Implementation

[0047] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0048] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0050] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0051] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0052] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0053] This invention employs the open-source software OpenFOAM to conduct a numerical study on the sloshing energy distribution in a conventional liquid tank. Please refer to [link / reference needed]. Figure a and Figure b ,like Figure a As shown, the energy of the sloshing fluid motion in the tank is mainly concentrated at the free surface, especially near the tank walls where the liquid level rises significantly. Figure b As shown, the closer to the free surface, the faster the fluid particles move; the closer to the bulkhead, the greater the amplitude of the surface movement.

[0054] Based on the above numerical studies, this invention provides an adjustable diaphragm-type liquid tank anti-sloshing device 1. Please refer to [link / reference]. Figures 1-6 It includes a flexible film 10, a fixing component 11, and a buoyancy enhancement component.

[0055] The fixing component 11 is located on the inner wall of the liquid tank 2. The buoyancy enhancement component includes a float 121. At least a portion of the edge of the flexible film 10 is connected to the float 121. The float 121 is detachably connected to the fixing component 11 and can slide along the fixing component 11 under the action of buoyancy, so that one side surface of the flexible film 10 is attached to the liquid surface.

[0056] The flexible membrane 10 has multiple water-permeable holes 103, which are used to return the liquid accumulated on the other side of the flexible membrane 10 to the liquid tank 2 to prevent liquid accumulation.

[0057] The adjustable membrane-type liquid tank anti-sloshing device 1 provided by this utility model adopts a membrane-type flexible material. Its structure itself has large deformation characteristics and high flexibility. It has a large coverage area of ​​the free liquid surface, effectively suppressing fluid movement across the entire free liquid surface. It can float and sink freely with changes in water level, unaffected by changes in liquid level height. Therefore, it can be applied to different liquid tank depths and different ship roll amplitudes. Furthermore, the float 121 is installed on the inner cavity sidewall of the liquid tank 2 through the fixing component 11, which can greatly reduce liquid level rise at the tank wall location, resulting in a significant anti-sloshing effect.

[0058] The flexible film is a continuous, lightweight, deformable, flexible, and corrosion-resistant film of a certain thickness, capable of changing its shape according to the movement of the free liquid surface. This invention is not limited in the type or shape of the flexible film 10; for example, it can be a flexible polymer film, an aluminized high-barrier polyester film, a TPU alloy film, a plastic film, a silicone film, etc. The shape of the flexible film 10 is not limited and can be designed according to the shape of the liquid tank. The float 121 can be, for example, a lightweight hollow plastic corrosion-resistant tube. In a more specific embodiment, the diameter of the float 121 is 20-30 cm, and the wall thickness can be selected as 2-3 cm.

[0059] The thickness of the flexible membrane 10 is not limited, for example, it can be 0.05-0.25 cm. Furthermore, the number of flexible membranes 10 is also not limited. Taking a cubic liquid tank as an example, there can be one or more flexible membranes 10. In one embodiment, the floats 121 corresponding to multiple flexible membranes 10 are all located on the side of the flexible membrane close to the inner wall of the liquid tank. Figure 1 As shown, there are two flexible films 10, including a first flexible film 101 and a second flexible film 102 arranged opposite each other. In other alternative embodiments, the number of flexible films 10 may also be three, four, etc.

[0060] Furthermore, in one embodiment, a plurality of permeable holes 103 are arranged in an array, including multiple permeable hole groups. Each permeable hole group includes multiple permeable holes 103. The multiple permeable hole groups are spaced apart along the extension direction of the float 121, and the multiple permeable holes in each permeable hole group are spaced apart along the radial direction of the float 121. In a specific embodiment, the number of permeable hole groups is three, and the number of permeable holes 103 in each permeable hole group is three. The number of permeable holes 103 in the radial direction of the float 121 (or can be understood as the width direction of the flexible film 10) directly affects the number of adjustable performance levels of the anti-sway device, and its number can be appropriately increased if necessary.

[0061] In one embodiment, a gap may be left between the flexible membrane 10 and the front and rear walls of the liquid tank 2 to prevent the flexible membrane 10 from rubbing against the tank wall and thus affecting the movement of the flexible membrane 10 with the free liquid surface.

[0062] In one implementation, please refer to Figures 2-4 The adjustable diaphragm-type liquid tank anti-sloshing device 1 also includes a flow-blocking element 13. The first side 104 of the flexible diaphragm 10 is connected to the float 121, and the flow-blocking element 13 is located on the second side 105 of the flexible diaphragm 10 opposite to the first side 104. Figure 3 and Figure 4 As shown, the flow-blocking component 13 includes a connecting rod 131 and a flow-blocking cap 132. The first end 1311 of the connecting rod 131 is connected to the middle of the flow-blocking cap 132, and the second end 1312 of the connecting rod 131 is connected to the second side 105 of the flexible film 10. The two ends of the flow-blocking cap 132 can move towards each other or away from each other around the first end 1311 of the connecting rod 131.

[0063] When the two ends of the flow-blocking cap 132 move towards each other to the first position, as Figure 3 As shown, the flow-blocking cap 132 is in a closed state. At this time, its front end is relatively pointed. When the flexible membrane 10 moves from the center of the liquid tank 2 to both sides of the liquid tank under the action of the swaying liquid surface, the water flow exerts a force on the flow-blocking cap 132, such as... Figure 4 As shown by the dashed arrow, the flow-blocking cap 132 is driven to the second position. When the two ends of the flow-blocking cap 132 move in opposite directions to the second position, as... Figure 4 As shown, the flow-blocking cap 132 is in the open state. At this time, the flow-blocking effect of the cap's upstream surface is significant, thus inhibiting the flexible membrane 10 from continuing to move along the sides of the liquid tank. When the flexible membrane 10 moves from the sides of the liquid tank towards the center, the water flow exerts a force on the flow-blocking cap 132, such as... Figure 3 As shown by the dashed arrow, the drive cap 132 closes. The small frontal flow obstruction effect allows the flexible film 10 to move quickly to the center position. Over time, this keeps the flexible film 10 in a taut and flat state.

[0064] In one embodiment, when both ends of the flow-blocking cap 132 are in the second position, the flow-blocking member 13 has a T-shaped structure. This invention does not limit the shape of the flow-blocking cap 132, as long as it can change the flow-blocking capacity of the upstream surface by closing and opening, it does not depart from the scope of this invention. For example, it can be disc-shaped or elongated. In one exemplary embodiment, the longitudinal cross-sectional shape of the flow-blocking cap 132 is crescent-shaped. The flow-blocking cap 132 can be a rigid structure or a flexible structure; for example, it can be a part integrally formed with the flexible film 10 located at the edge of the flexible film 10.

[0065] The adjustable membrane liquid tank anti-sway device 1 of this utility model has a free end (or can be understood as the second side 105) of the flexible membrane 10 connected by a flow-blocking element 13. The flow-blocking cap is controlled to close or open by the force of water flow, so that the flexible membrane 10 can be automatically prevented from drifting to both sides of the tank wall without manual operation, thereby improving the anti-water flow capability of the anti-sway device and thus having high anti-sway stability.

[0066] In a further implementation, such as Figure 2 As shown, the buoyancy enhancement component also includes floats 122 for increasing the end buoyancy of the free end of the flexible membrane 10. The floats 122 are connected to the permeable holes 103 via ropes 123, and / or, the floats 122 are connected between the first end 1311 and the second end 1312 of the connecting rod 131 of the flow-blocking member 13. In one exemplary embodiment, each flexible membrane 10 has three floats 122. The connecting rod 131 and the floats 122 each have binding holes. The middle float 122 is bound to the connecting rod 131 via ropes. The floats 122 on both sides are connected to corresponding permeable holes. In severe sea conditions, the ropes 123 of the floats 122 on both sides should be long enough to prevent excessive tension from reducing the deformation capacity of the flexible membrane 10 and affecting the contraction operation of the anti-sway device. The ropes 123 may be, for example, made of flexible fiber material. In one embodiment, the float 122 is a cylindrical hollow plastic barrel.

[0067] During operation, the buoyancy generated by the float 121 and float 122 will drive the flexible membrane 10 to move. The deformation capability of the flexible membrane 10 can adapt to the movement of the free liquid surface. In turn, through the viscosity of the fluid itself and the suction generated by the two, it will always stick to the liquid surface, reducing the movement speed of the fluid particles on the liquid surface of the entire liquid tank 2. Furthermore, since the flexible membrane 10 has a certain weight, its own gravity will also inhibit the movement of the entire free liquid surface, thereby achieving a good anti-sway effect.

[0068] In one exemplary embodiment, there are multiple buoys 122, which are disposed on the second side 105 of the corresponding flexible membrane 10 and connected together. For example, in harsh sea conditions, the multiple buoys 122 connected to the multiple flexible membranes 10 can be connected one by one by ropes, which can also prevent the buoys 122 and the flexible membranes 10 from moving toward the bulkhead.

[0069] For further implementation methods, please refer to Figure 5The flexible film 10 has at least a portion of its edge provided with a plurality of first fixing holes 106 and a plurality of second fixing holes 107. The plurality of first fixing holes 106 and the plurality of second fixing holes 107 are respectively spaced apart along the axial direction of the float 121. The first fixing holes 106 are located at the edge of the flexible film 10, and the second fixing holes 107 are located on the side of the first fixing holes 106 near the center of the flexible film 10. The first fixing holes 106 and the second fixing holes 107 are used to thread binding ropes through, so as to wrap and bind at least a portion of the edge of the flexible film 10 to the circumferential sidewall of the float 121.

[0070] The number of the first fixing hole 106 and the second fixing hole 107 is not limited. For example, the number of the first fixing hole 106 can be 3 to 5, and the number of the second fixing hole 107 corresponds to the number of the first fixing hole 106.

[0071] In one example embodiment, the distance between the first fixing hole 106 and the second fixing hole 107 along the radial direction of the float 121 (or can be understood as the width direction of the flexible film) is equal to the perimeter of the cross section of the float 121. After the flexible film 10 wraps around the float 121 once, the first fixing hole 106 and the second fixing hole 107 are nearly coincident, which facilitates binding.

[0072] In one embodiment, at least some of the permeable holes 103 are correspondingly arranged with the first fixing hole 106 along the winding direction of the flexible film 10. The flexible film 10 can be wound around the circumference of the float 121 and fixed to the circumferential sidewall of the float 121 by the first fixing hole 106 and the corresponding permeable holes 103, so as to accommodate the flexible film 10. The flexible film 10 can be deployed and retracted by rotating the float 121. When the retracted position of the flexible film 10 reaches the position of a certain row of permeable holes 103, the retracted part can be tied to the float 121 by passing a rope through the permeable holes 103. In this way, the effective area of ​​the flexible film 10 can be changed, the anti-sway level can be adjusted, and a flexible film 10 of a corresponding area can be released for different sea conditions. Specifically, the flexible film 10 and the float 122 can be disassembled and deployed on the deck, or the flexible film 10 can be retrieved by rotating the float 121 with a wrench.

[0073] The adjustable membrane liquid tank anti-sway device 1 of this utility model embodiment has a flexible membrane 10 that can be wound around the circumference of the float 121 and fixed by the water-permeable hole 103 and the fixing hole for storage. This structure can adjust the anti-sway performance of the device according to different sea conditions, further enriching the applicable scenarios of the adjustable membrane liquid tank anti-sway device 1 in different sea conditions. It can also prevent the flexible membrane from being exposed to seawater impact for a long time when idle, thus playing a good protective role.

[0074] In a further embodiment, the inner walls of the plurality of water-permeable holes 103, the plurality of first fixing holes 106, and the plurality of second fixing holes 107 are provided with an elastic protective layer to prevent binding or other operations from damaging the flexible film 10 at the opening.

[0075] For further implementation methods, please refer to Figure 6 and combined Figure 1 It is understood that the fixing assembly 11 includes a first column 111, a second column 112, a first float ring 113, a second float ring, a first column ring 115, a second column ring, a first limiting member 117, and a second limiting member. The first column 111 and the second column 112 are fixed to the inner cavity sidewall of the liquid tank 2, for example, they can be welded to the sidewall of the liquid tank 2.

[0076] The first float ring 113 is sleeved on the outer wall of the first end of the float 121, the first column ring 115 is sleeved on the circumferential outer wall of the first column 111, the first float ring 113 passes through the first column ring 115, and the first limiting member 117 is sleeved on the first end of the float 121 to limit the first float ring 113 to the first end of the float 121. The connection relationship of the second column 112, the second float ring, the second column ring, the second limiting member, and the corresponding float 121 is similar. The second float ring is sleeved on the outer wall of the second end of the float 121, the second column ring is sleeved on the circumferential outer wall of the second column 112, the second float ring passes through the second column ring, and the second limiting member is sleeved on the second end of the float 121 to limit the second float ring to the second end of the float 121.

[0077] The first column ring 115 can slide along the side wall of the first column 111, and the second column ring (not shown in the figure) can slide along the side wall of the second column 112.

[0078] In one embodiment, the first column 111 and the second column 112 can be, for example, solid thin rods, arranged in the corners of the inner cavity of the liquid tank 2. They only need to have sufficient strength and do not need to have a large diameter; for example, a rigid structure with a diameter of 5-8 cm can be used. To reduce the friction between the column and the column ring, the diameter of the column ring can be set to approximately twice the diameter of the column. The diameter of the float ring can, for example, be slightly larger than the diameter of the float 121 to facilitate disassembly.

[0079] The first and second limiting components can be nuts, and larger nuts can be selected to prevent the column ring and float ring from falling off during operation. In one exemplary embodiment, such as... Figure 7 As shown, the first limiting member 117 (e.g., a nut) can be disassembled and installed by a wrench 31. The end of the wrench 31 is also provided with a rocker arm 32. There should be two rocker arms 32 to facilitate the simultaneous operation of both ends of the float 121 for disassembly and the recycling of the flexible film 10.

[0080] Those skilled in the art will understand that when there are multiple flexible films 10, there are also multiple floats 121. Therefore, the number of the above-mentioned components must match the number of floats 121. Each float 121 is matched with a corresponding first column 111, second column 112, first float ring 113, second float ring, first column ring 115, second column ring, first limiting member 117, and second limiting member. The adjustable membrane liquid tank anti-sway device 1 of this utility model connects the flexible membrane 10, the float 121 and the inner wall of the liquid tank 2 together through the first column 111, the second column 112, the first float ring 113, the second float ring, the first column ring 115, the second column ring, the first limiting member 117 and the second limiting member. This not only ensures the flexibility of the flexible membrane 10 to slide relative to the fixed component 11 under the action of buoyancy, but also allows for easy disassembly. It can be removed when not in operation, making the whole device have the advantages of low cost, easy replacement and lightweight structure.

[0081] The ropes used in each part of this invention are made of fiber material of appropriate thickness, which facilitates disassembly and avoids squeezing damage to the flexible structure.

[0082] In one example of operation, when the liquid tank 2 causes the fluid inside to slosh, a flexible membrane 10 of a certain thickness adheres to the free liquid surface using the viscosity of the fluid, the buoyancy of the flexible membrane 10 itself, and the buoyancy provided by the floats 121 and pontoons 122. Through interaction with the free liquid surface, it effectively reduces the energy of the liquid surface movement. The design of the flow-blocking component 13 can prevent the flexible membrane 10 from moving towards the tank wall. In extreme sea conditions, the pontoons 122 on the left and right sides can be connected one by one to prevent the flexible membrane 10 from moving towards the fixed end. In addition to the flexible membrane 10, the floats 121 can also effectively reduce the liquid surface rise at the tank wall location. When the liquid level changes, the floats 121 follow the movement of the liquid surface through the float ring (e.g., the first float ring 113) and the column ring (e.g., the first column ring 115), thereby driving the movement of the flexible membrane 10 and other anti-sloshing devices to achieve the function of autonomously adapting to the water level. When dealing with different sea conditions, the permeable holes 103 can serve the same function as the fixed holes (e.g., the first fixed hole 106 and the second fixed hole 107). That is, the flexible membrane 10 can be deployed and retracted through the permeable holes 103. The retracted flexible membrane 10 is wrapped around the float 121. The flexible membrane 10 can be tied by passing a rope through a row of permeable holes 103. Deploying flexible membranes 10 of different areas can achieve different anti-sway effects. The anti-sway device can be installed and removed through the first limiting member 117 and the second limiting member (e.g., nuts). By removing the nuts at both ends with the wrench 31 and then removing the float ring from the float 121, the float 121 and other devices can be removed. If only the flexible membrane 10 and other devices (excluding the float 121) need to be removed, only the rope at the fixed end needs to be untied.

[0083] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An adjustable diaphragm-type liquid tank anti-sloshing device, characterized in that, Includes flexible films, fixing components, and buoyancy enhancement components; The fixing component is disposed on the inner cavity sidewall of the liquid tank, the buoyancy enhancement component includes a float, at least a portion of the edge of the flexible film is connected to the float, the float is detachably connected to the fixing component and can slide along the fixing component under the action of buoyancy, so that one side surface of the flexible film is attached to the liquid surface. The flexible film has multiple water-permeable holes, which are used to return the liquid accumulated on the other side of the flexible film to the liquid tank.

2. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 1, characterized in that, It also includes a flow-blocking component; the first side of the flexible film is connected to the float, the flow-blocking component includes a connecting rod and a flow-blocking cap, the first end of the connecting rod is connected to the middle of the flow-blocking cap, and the second end of the connecting rod is connected to the second side of the flexible film opposite to the first side; the two ends of the flow-blocking cap can move towards each other or away from each other around the first end of the connecting rod. When the two ends of the flow-blocking cap move toward each other to the first position, the flow-blocking cap is in a closed state; When the two ends of the flow-blocking cap move in opposite directions to the second position, the flow-blocking cap is in the open state.

3. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 2, characterized in that, When both ends of the flow-blocking cap are in the second position, the flow-blocking element has a T-shaped structure.

4. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 2, characterized in that, The buoyancy enhancement component further includes a float connected to the water-permeable hole, and / or the float is connected between the first end and the second end of the connecting rod.

5. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 1, characterized in that, The flexible film has at least a portion of its edge with a plurality of first fixing holes and a plurality of second fixing holes. The plurality of first fixing holes and the plurality of second fixing holes are respectively spaced apart along the axial direction of the float. The first fixing holes are located at the edge of the flexible film, and the second fixing holes are located on the side of the first fixing holes closer to the center of the flexible film. The first fixing holes and the second fixing holes are used to thread binding ropes through to wrap and bind at least a portion of the edge of the flexible film to the circumferential sidewall of the float.

6. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 5, characterized in that, Along the winding direction of the flexible film, at least some of the water-permeable holes are correspondingly arranged with the first fixing hole. The flexible film can be rolled around the circumference of the float and fixed by binding it with the first fixing hole and the corresponding water-permeable hole to accommodate the flexible film.

7. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 5, characterized in that, The inner walls of the plurality of water-permeable holes, the plurality of first fixing holes, and the plurality of second fixing holes are all provided with an elastic protective layer.

8. The adjustable diaphragm-type liquid tank anti-sloshing device according to any one of claims 1 to 7, characterized in that, The fixing assembly includes a first column, a second column, a first float ring, a second float ring, a first column ring, a second column ring, a first limiting member, and a second limiting member; the first column and the second column are fixed to the inner cavity sidewall of the liquid tank; The first float ring is sleeved on the outer wall of the first end of the float, the first column ring is sleeved on the circumferential outer wall of the first column, the first float ring passes through the first column ring, and the first limiting member is sleeved on the first end of the float to limit the first float ring to the first end of the float. The second float ring is sleeved on the outer wall of the second end of the float, the second column ring is sleeved on the circumferential outer wall of the second column, the second float ring passes through the second column ring, and the second limiting member is sleeved on the second end of the float to limit the second float ring to the second end of the float; The first column ring can slide along the side wall of the first column, and the second column ring can slide along the side wall of the second column.

9. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 4, characterized in that, There are multiple flexible films, and the floats corresponding to the multiple flexible films are all located on the side of the flexible film close to the inner wall of the liquid tank.

10. The adjustable diaphragm-type liquid tank anti-sloshing device according to claim 9, characterized in that, There are multiple pontoons, which are located on the second side of the corresponding flexible film and are connected together.

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