Device for inhibiting sloshing of liquid tank

Abstract

The invention discloses a device for inhibiting sloshing of a liquid tank, which comprises a plurality of sloshing inhibiting plates arranged in the liquid tank, the plurality of sloshing inhibiting plates are transversely and longitudinally staggered and are not contacted with each other, and the transverse and longitudinal sloshing inhibiting plates work independently and are not interfered with each other; a plurality of damping holes are evenly formed in the oscillation restraining plate, and the oscillation restraining plate is made of elastic materials. The oscillation restraining plate is made of an elastic material, the oscillation of liquid in the liquid tank can be relieved or restrained through the elastic buffering principle of the oscillation restraining plate, and the oscillation restraining plate cannot be damaged; on the basis of U-shaped elastic deformation of the original oscillation suppression plate and vortex generation of a flow field by the circular damping holes, the special-shaped holes are added, so that the fluid oscillation weakening capability of the device can be effectively enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of transportation engineering, and in particular to a device for suppressing sloshing of a liquid tank. Background Art

[0002] Sloshing is a common phenomenon of liquid motion, which refers to the free surface motion of liquid in a partially loaded container when it is forced to move by external excitation. The sloshing phenomenon is highly nonlinear and random. When the frequency of external excitation is close to the natural frequency of the tank loaded with liquid, the liquid will resonate and slosh, resulting in very violent liquid motion, which will cause violent impact on the tank wall, causing relatively large sloshing loads, and in severe cases, causing structural damage, which will also affect the stability of the ship's navigation.

[0003] At present, in order to suppress or reduce the sloshing of liquid tanks and reduce the damage of liquid tank sloshing to the liquid tank wall during liquid transportation, the main technical method adopted is to use a fixed sloshing plate or a floating plate. However, the fixed sloshing plate has a limited range of action on the liquid tank loading rate. When the liquid loading rate is high, the sloshing effect of the sloshing plate is very small, and when the impact load on the fixed sloshing plate is large, it is easy to break and fail. The floating plate is a floating sloshing plate, which is a floating and constrained vertical plate or horizontal plate or a combination of them placed on the free liquid surface to suppress the fluctuation of the free liquid surface wave height, so as to achieve the purpose of sloshing; however, the floating plate collides with the liquid tank wall. In order to avoid the collision between the floating plate and the liquid tank wall, an anti-collision device needs to be added, which makes the overall assembly procedure complicated. In summary, the existing methods of suppressing or reducing the sloshing of liquid tanks have poor buffering effect when dealing with the impact of liquids, and it is difficult to avoid damage to the sloshing plate itself. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a device for suppressing tank sloshing which can enhance the buffering effect and protect the sloshing suppression plate itself.

[0005] Technical solution: The present invention discloses a device for suppressing sloshing of a liquid tank, comprising a sloshing suppression plate arranged inside the liquid tank, wherein a plurality of the sloshing suppression plates are arranged in a staggered manner horizontally and vertically without contacting each other, and the horizontal and vertical sloshing suppression plates operate independently without interfering with each other; a plurality of damping holes are evenly arranged on the sloshing suppression plates, and the sloshing suppression plates are set to be made of elastic material.

[0006] Furthermore, the damping plate is provided with a plurality of separation slits in groups of two, and the damping plate between two separation slits in the same group is provided with shaped holes arranged vertically in the horizontal and vertical directions, and the separation slits separate the damping holes and the shaped holes.

[0007] Furthermore, slit circular tubes are installed at the upper and lower edges of the swing suppression plate to prevent the plate from turning over, and the slit circular tubes are made of rigid material.

[0008] Furthermore, a reinforcing rod is provided at the separation seam, and two ends of the reinforcing rod are fixedly connected to two slit circular tubes corresponding to the swing suppression plate.

[0009] Furthermore, one side of the reinforcing rod close to the special-shaped hole is fixedly connected to the swing suppression plate, and a gap is left on the other side.

[0010] Furthermore, the longitudinally distributed sway suppression plates are parallel to the forward direction of the ship, the transversely distributed sway suppression plates are perpendicular to the forward direction of the ship, and the number of the longitudinally distributed sway suppression plates is greater than the number of the transversely distributed sway suppression plates.

[0011] Furthermore, a fixing frame is fixedly installed on the vertical inner wall of the liquid tank, and both ends of the slit circular tube extend into the fixing frame and are fixedly connected thereto.

[0012] Furthermore, both ends of the sway suppression plate do not extend into the interior of the fixing frame.

[0013] Furthermore, the fixing frame is provided with a groove matching the slit circular tube, and fixing holes connected to the groove are provided on both sides of the fixing frame, and mounting holes matching the fixing holes are provided at both ends of the slit circular tube extending into the groove, and bolts and nuts are respectively provided on both sides of the fixing frame, and one end of the bolt is connected to the nut after passing through the fixing hole and the mounting hole.

[0014] Furthermore, arc grooves matching the slit circular tube are arranged on both sides of the groove, and a sponge cushion layer for protecting the slit circular tube is installed in the arc groove.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the sloshing suppression plate of the present invention is set to an elastic material, and the principle of elastic buffering of the sloshing suppression plate is utilized, which is beneficial to slow down or suppress the sloshing of the liquid in the liquid tank, and significantly reduces the amplitude of the sloshing pressure during the liquid sloshing process, and will not damage the sloshing suppression plate itself.

[0016] The anti-sloshing plates are arranged in a staggered manner in the liquid tank, which can suppress the sloshing of the liquid in both the horizontal and vertical directions.

[0017] The present invention adds a circular damping hole on the basis of the original U-shaped elastic deformation suppression plate, and the circular damping hole generates a vortex in the flow field, which is beneficial to enhancing the overall ability of the device to suppress sloshing; the present invention adds a special-shaped hole on the basis of the original U-shaped elastic deformation suppression plate, and utilizes the damping characteristics of the closed elastic hole to further enhance the ability of the device to weaken fluid sloshing; the separation seam divides the suppression plate into multiple independent areas, which is beneficial to suppressing uniform deformation of the suppression plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a longitudinal cross-sectional view of the present invention;

[0020] Figure 3 is a transverse cross-sectional view of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the fixing frame of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the sway suppression plate of the present invention;

[0023] Figure 6 It is an enlarged view of the special-shaped hole of the present invention. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0025] The present invention discloses a device for suppressing sloshing of a liquid tank, such as Figure 1-Figure 3 As shown, it includes a liquid tank 1, a sway suppression plate 2 and a fixing frame 3. A plurality of damping holes 5 are evenly provided on the sway suppression plate 2. A slit circular tube 4 is fixedly installed at the upper and lower edges of the sway suppression plate 2. The fixing frame 3 is fixedly installed on the vertical inner wall of the liquid tank 1. The fixing frame 3 is provided with an even number of fixing frames 3 and is symmetrically distributed on the inner wall of the liquid tank 1. Both ends of the slit circular tube 4 extend into the fixing frame 3 and are fixedly connected thereto. The sway suppression plate 2 is set to be an elastic material. When the sway suppression plate 2 responds to the swaying impact of the fluid, it generates tensile elastic deformation to absorb and weaken the fluid energy. Preferably, the sway suppression plate 2 is made of EVA material. EVA has the advantages of good cushioning, impact resistance, heat insulation, moisture resistance, chemical resistance, non-toxicity, and non-absorption of liquid. The thickness of the sway suppression plate 2 is 5 mm. The slit circular tube 4 is set to be a rigid material. Preferably, the slit circular tube 4 is made of a carbon fiber composite material, which has sufficient bending resistance and is not prone to large deflection deformation or even breakage. Preferably, the surface of the fixing frame 3 is coated with a super-hydrophobic film layer to prevent the fixing frame 3 from being corroded by being immersed in liquid for a long time. The slit circular tube 4 fixedly installed at the upper and lower edges of the anti-sway plate 2 is used to install the anti-sway plate 2 on the one hand, and on the other hand, it can prevent the anti-sway plate 2 from flipping and twisting up and down when subjected to excessive impact of the liquid, thereby avoiding the anti-sway plate 2 from being entangled and twisted and deformed and failing. The setting of the damping hole 5 can generate a vortex in the flow field, thereby dissipating the energy of the liquid oscillation. Preferably, the diameter of the damping hole 5 is 4 mm, and the distance between adjacent damping holes 5 is 4 mm.

[0026] The anti-sway plates 2 are arranged vertically and horizontally in a crisscross pattern inside the liquid tank 1, and the slotted circular tubes 4 on different anti-sway plates 2 do not touch each other. On the one hand, this can ensure that the longitudinal anti-sway plates 2 and the horizontal anti-sway plates 2 do not touch each other when the liquid sloshes, so that the elastic deformations of the anti-sway plates 2 in the two directions do not affect each other; on the other hand, the non-contact of the anti-sway plates 2 can avoid occupying too much tank volume, and there is no need to continuously arrange the anti-sway plates 2 from the bottom of the liquid tank 1 to the liquid surface.

[0027] The number of anti-sway plates 2 distributed longitudinally is more than that distributed horizontally. The horizontally distributed anti-sway plates 2 are mainly used to suppress the lateral sloshing of the liquid, and the longitudinally distributed anti-sway plates 2 are mainly used to suppress the longitudinal sloshing of the liquid, because in actual sea wave conditions, the probability of the ship encountering longitudinal waves is higher. The forward direction of the ship is longitudinal, and the direction perpendicular to the forward direction of the ship is transverse.

[0028] As Figure 2 , Figure 3 , Figure 4 and Figure 6 shown, multiple pairs of partition seams are provided on the anti-sway plates 2, and a reinforcing rod 6 is provided at the partition seams. One side of the reinforcing rod 6 is fixedly connected to the anti-sway plate 2, and there is a gap on the other side. The two ends of the reinforcing rod 6 are fixedly connected to the two slotted circular tubes 4 of the corresponding anti-sway plate 2. Special-shaped holes 7 are arranged vertically and horizontally on the anti-sway plate 2 between the two partition seams in the same group. The damping holes 5 and the special-shaped holes 7 are separated by the reinforcing rod 6. Preferably, the special-shaped holes 7 are arranged in a "king" shape. The reinforcing rod 6 is fixedly connected to the anti-sway plate 2 on the side close to the special-shaped holes 7. The setting of the partition seams can further enhance the function of the anti-sway plates 2 in suppressing sloshing. When the fluid passes through the special-shaped holes 7, due to its own elasticity, the special-shaped holes 7 open and close with damping, which can further weaken the energy of the fluid sloshing motion and improve the overall sloshing suppression ability. The reinforcing rod 6 is fixedly connected between the two slotted circular tubes 4, which can enhance the overall structural stability of the slotted circular tubes 4 and the anti-sway plates 2, and reduce the risk of breakage in the middle of the upper and lower two slotted circular tubes 4 caused by the liquid impact force. The partition seams divide the complete anti-sway plate 2 into multiple independent buffer areas. The sloshing degrees of the liquid at different positions in the liquid tank 1 are different. The multiple independent buffer areas can generate different degrees of U-shaped elastic deformations according to the different sloshing degrees of the liquid, improving the overall ability to suppress the liquid sloshing. And when the liquid passes through the special-shaped holes 7, due to its own elasticity, the special-shaped holes 7 open and close with damping, which can further weaken the energy of the fluid sloshing motion and improve the overall sloshing suppression ability. In addition, the partition seams divide the complete anti-sway plate 2 into multiple independent buffer areas, which is beneficial to the uniform deformation of the anti-sway plates 2.

[0029] The fixing frame 3 is provided with a groove 8 matching the slotted circular tube 4. Preferably, the depth of the groove 8 is 80 mm. Preferably, arc grooves matching the slotted circular tube 4 are provided on both sides of the groove 8, and a sponge pad layer for protecting the slotted circular tube 4 is installed in the arc groove. The sponge pad can prevent the slotted circular tube 4 from breaking due to stress concentration when bending. Preferably, the two ends of the swing plate 2 do not extend into the inside of the fixing frame 3, that is, the two ends of the swing plate 2 do not extend into the groove 8, so that the groove 8 can be prevented from limiting the elastic deformation of the swing plate 2.

[0030] like Figure 4 and Figure 5 As shown, fixing holes communicating with the groove 8 are provided on both sides of the fixing frame 3, mounting holes 9 matching with the fixing holes are provided at both ends of the slit circular tube 4 extending into the groove 8, bolts 10 and nuts 11 are provided on both sides of the fixing frame 3, and one end of the bolt 10 passes through the fixing hole and the mounting hole 9 and is connected with the nut 11. That is, the two ends of the slit circular tube 4 are detachably connected with the fixing frame 3 through the bolts 10 and the nuts 11, so in actual use, the staff can adjust the relative position of the anti-sway plate 2 in the liquid tank 1 according to different liquid loading depths, and ensure that the transverse anti-sway plate 2 is at the free liquid surface, that is, ensure that the transverse anti-sway plate 2 is on the liquid surface.

[0031] The sloshing suppression plate 2 is subjected to the impact of liquid sloshing and undergoes tensile elastic deformation to absorb and dissipate the energy generated by the sloshing of the liquid in the cabin, which effectively eliminates or buffers the impact of the liquid and reduces the pressure on the cabin wall caused by the sloshing of the liquid. The setting of the damping hole 5 can generate vortices in the flow field, thereby dissipating the energy of the liquid sloshing. When the fluid passes through the special-shaped hole 7, due to its own elasticity, the special-shaped hole 7 opens and closes in a damping manner, which can further weaken the energy of the fluid sloshing motion and enhance the overall ability to suppress sloshing. In summary, the device for suppressing the sloshing of the liquid tank of the present invention adds the special-shaped hole 7 on the basis of the original U-shaped elastic deformation of the sloshing suppression plate 2 and the circular damping hole 5 to generate vortices in the flow field, and utilizes the damping characteristics of the closed elastic hole to effectively enhance the ability of the device to weaken the sloshing of the fluid.

Claims

1. A device for suppressing sloshing of a liquid tank, comprising a sloshing suppression plate (2) arranged inside the liquid tank (1), characterized in that: The plurality of sway suppression plates (2) are arranged in a staggered manner in a horizontal and vertical direction and do not contact each other, and the horizontal and vertical sway suppression plates (2) operate independently and do not interfere with each other; a plurality of damping holes (5) are evenly arranged on the sway suppression plates (2), and the sway suppression plates (2) are configured to be made of elastic material.

2. The device for suppressing tank sloshing according to claim 1, characterized in that: The sway suppression plate (2) is provided with a plurality of separation slits arranged in groups of two, and the sway suppression plate (2) located between two separation slits in the same group is provided with a shaped hole (7) arranged vertically in the horizontal and vertical directions, and the separation slits separate the damping hole (5) and the shaped hole (7).

3. The device for suppressing tank sloshing according to claim 2, characterized in that: The upper and lower edges of the swing suppression plate (2) are both provided with slotted circular tubes (4) to prevent the plate from turning over, and the slotted circular tubes (4) are made of a rigid material.

4. The device for suppressing tank sloshing according to claim 3, characterized in that: A reinforcing rod (6) is provided at the separation seam, and two ends of the reinforcing rod (6) are fixedly connected to two slotted circular tubes (4) corresponding to the swing suppression plate (2).

5. The device for suppressing tank sloshing according to claim 4, characterized in that: The reinforcing rod (6) is fixedly connected to the swing suppression plate (2) on one side close to the special-shaped hole (7), and a gap is left on the other side.

6. The device for suppressing tank sloshing according to claim 1, characterized in that: The longitudinally distributed sway suppression plates (2) are parallel to the advancing direction of the ship, the transversely distributed sway suppression plates (2) are perpendicular to the advancing direction of the ship, and the number of the longitudinally distributed sway suppression plates (2) is greater than the number of the transversely distributed sway suppression plates (2).

7. The device for suppressing tank sloshing according to claim 3, characterized in that: A fixing frame (3) is fixedly mounted on the vertical inner wall of the liquid tank (1), and both ends of the slit circular tube (4) extend into the fixing frame (3) and are fixedly connected thereto.

8. The device for suppressing tank sloshing according to claim 7, characterized in that: The two ends of the sway suppression plate (2) do not extend into the interior of the fixing frame (3).

9. The device for suppressing tank sloshing according to claim 7, characterized in that: The fixing frame (3) is provided with a groove (8) matching with the slit circular tube (4), and fixing holes communicating with the groove (8) are provided on both sides of the fixing frame (3), and mounting holes (9) matching with the fixing holes are provided at both ends of the slit circular tube (4) extending into the groove (8), and bolts (10) and nuts (11) are respectively provided on both sides of the fixing frame (3), and one end of the bolt (10) passes through the fixing hole and the mounting hole (9) and is connected to the nut (11).

10. The device for suppressing tank sloshing according to claim 9, characterized in that: Arc grooves matching the slotted circular tube (4) are arranged on both sides of the groove (8), and a sponge cushion layer for protecting the slotted circular tube (4) is installed in the arc groove.

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