Composite wave absorbing device combining vegetation model and plastic blind ditch

Abstract

The invention discloses a vegetation model and plastic blind ditch combined composite wave absorbing device which comprises a square supporting amplitude modulation frame, a lifting mechanism and a vegetation model. The square supporting amplitude modulation frame comprises a bottom support, a block-shaped plastic blind ditch plate arranged on the bottom support, two guide sliding rails arranged on the two sides of the top of the block-shaped plastic blind ditch plate correspondingly, and a porous net-shaped vegetation fixing grid arranged between the two guide sliding rails. A plurality of plug-in type grooves are formed in the porous net-shaped vegetation fixing grids, vegetation strips are inserted into the plug-in type grooves to form a vegetation model, one end of the bottom support is connected with the water tank, the other end of the bottom support is connected with the lifting mechanism, and the lifting mechanism is used for adjusting the angle between the square supporting amplitude modulation frame and the water tank. The vegetation model and the plastic blind ditch plate are combined, reflection waves are reduced through double wave absorption of the vegetation model and the plastic blind ditch plate, and the wave absorption effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wave breaking, relates to the design of a wave tail end wave breaking device, and specifically relates to a composite wave breaking device combining a vegetation model with a plastic blind ditch. Background Art

[0002] As a key research platform for physical model experiments in the field of hydrodynamics, the wave tank has indispensable scientific research value in cutting-edge areas such as parameter optimization of coastal protection projects, performance testing of marine renewable energy devices, and exploration of wave-structure coupling mechanisms in ships and marine engineering structures. By manipulating relevant parameters, the platform can replicate the generation, propagation, breaking, and interaction of waves with structures, providing key theoretical support and data verification for engineering practice. However, in wave tank experiments, wave reflection has always been a major problem affecting the stability of wave generation. Severe wave reflection directly affects the availability and accuracy of experimental data. Due to the length of the wave tank, when the wave propagates to the end of the tank, the reflected wave and the incident wave are superimposed on each other, forming a complex flow field environment, resulting in a significant decrease in test accuracy. In addition, in wave experiments, disturbed water often requires longer waiting time, which prolongs the experimental cycle.

[0003] The wave tail end wave absorbing device is an important device for reducing or eliminating the reflected waves and interference waves generated during the wave generation process. Although traditional wave absorbing devices such as wire mesh arrays and gravel embankments can consume wave energy to a certain extent, they have many limitations. For example, their wave reflection coefficient is high, and the wave absorbing range that the device is adapted to is narrow, and it cannot effectively cope with complex test wave frequencies. The currently commonly used plastic blind ditch wave absorbing device, with its porous mesh structure, can effectively increase the contact area between waves and materials, dissipate wave energy, and show better wave absorbing effect and installation convenience than traditional wave absorbing devices. However, the design of this device mostly adopts a single angle structure, which limits its performance to a certain extent. Especially for experiments with high data accuracy requirements, its wave absorbing ability is difficult to meet the required experimental standards. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, a composite wave-breaking device combining a vegetation model with a plastic blind ditch is provided, which combines the vegetation model with the plastic blind ditch plate to reduce the generation of reflected waves through the dual wave-breaking of the vegetation model and the plastic blind ditch plate.

[0005] Technical solution: To achieve the above-mentioned purpose, the present invention provides a composite wave-breaking device combining a vegetation model and a plastic blind ditch, comprising a square support amplitude modulation frame, a lifting mechanism and a vegetation model. The square support amplitude modulation frame comprises a bottom bracket, a block plastic blind ditch plate arranged on the bottom bracket, two guide rails respectively arranged on both sides of the top of the block plastic blind ditch plate, and a porous mesh vegetation holding grid arranged between the two guide rails. The porous mesh vegetation holding grid is provided with a plurality of plug-in slots, and the plug-in slots are used for inserting vegetation strips to form a vegetation model. One end of the bottom bracket is connected to the water tank, and the other end is connected to the lifting mechanism. The lifting mechanism is used to adjust the angle between the square support amplitude modulation frame and the water tank.

[0006] Furthermore, the lifting mechanism includes a lifting rod, a fixing plate and a lifting shaft, the fixing plate is welded to the lower end of the lifting shaft, the lifting shaft is fitted on the lifting rod, and the lifting rod passes through the fixing plate and is connected to the bottom bracket.

[0007] Furthermore, the bottom bracket is provided with two columns with holes and fasteners matched with the two columns with holes, and the lifting rod is connected to the two columns with holes through the fasteners.

[0008] Furthermore, the distance between the two columns with holes is greater than the cross-sectional diameter of the lifting rod.

[0009] Furthermore, triangular connectors are provided at the four corners of the bottom bracket, and the block-shaped plastic blind ditch plate is fixed to the bottom bracket via the triangular connectors.

[0010] Furthermore, both sides of the end of the bottom bracket are provided with clamping protrusions, and the bottom bracket is connected to the bottom of the sink through the clamping protrusions.

[0011] Furthermore, vertical connecting pieces are provided at both ends of the guide rail, and the guide rail is connected to the block-shaped plastic blind ditch plate through the vertical connecting pieces.

[0012] Furthermore, connecting edges are provided at both ends of the porous mesh vegetation retaining grid, and mounting holes are provided on the connecting edges. The two connecting edges are respectively fitted in the track grooves of the two guide rails, and the porous mesh vegetation retaining grid is installed and fixed on the two guide rails through the mounting holes.

[0013] Furthermore, the porous mesh vegetation retaining grid is a mesh hollow structure, and each node position is provided with a plug-in slot.

[0014] Furthermore, a hand-operated opening and closing device is provided on the lifting shaft.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0016] 1. Effectiveness: During wave-breaking operations, incoming waves first dissipate some of their energy through the damping and deformation of the vegetation model. They then enter the plastic blind ditch plate, where they are broken and generate turbulence. The vortex structures in this turbulent flow continuously interact with the surrounding area, further consuming wave energy. The dual wave-breaking effect of the vegetation model and the plastic blind ditch plate ensures excellent wave-breaking performance and allows for better adaptation to changing wave conditions.

[0017] 2. Flexibility: The present invention has the function of freely adjusting the angle of the device and the relative position of the vegetation belt. In actual applications, due to the different shapes and sizes of the water tanks, and different hydrodynamic conditions such as wave height and wave period, the parameters required for the wave-breaking device are also different. By flexibly adjusting the angle of the device through the lifting rod, the waves can contact the vegetation model and the plastic blind ditch plate at a more suitable incident angle, thereby enhancing the damping effect of the vegetation and the turbulent energy dissipation effect inside the plastic blind ditch plate, thereby improving the wave-breaking efficiency. At the same time, a slide rail is equipped to adjust the relative position of the vegetation belt, and the vegetation belt can be placed in the area where wave energy is concentrated according to the wave propagation characteristics to maximize its energy dissipation effect. The device has good adaptability and can adapt to a variety of water tanks and hydrodynamic conditions. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of a square support AM frame;

[0020] Figure 3 is a schematic diagram of the guide rail;

[0021] Figure 4 It is a schematic diagram of a porous mesh vegetation retention grid;

[0022] Figure 5 This is a comparison chart of reflection coefficients. DETAILED DESCRIPTION

[0023] The present invention is further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0024] Example 1:

[0025] like Figures 1 to 4As shown, this embodiment provides a composite wave-breaking device combining a vegetation model with a plastic blind ditch, comprising a square support amplitude modulation frame, a lifting mechanism and a vegetation model. The square support amplitude modulation frame comprises a bottom bracket 8, a block plastic blind ditch plate 2 arranged on the bottom bracket 8, two guide rails 3 respectively arranged on both sides of the top of the block plastic blind ditch plate 2, and a porous mesh vegetation holding grid 4 arranged between the two guide rails 3. The porous mesh vegetation holding grid 4 is a mesh hollow structure, and each node position is provided with a plug-in slot 41. The plug-in slot 41 is used for inserting vegetation strips 13 to form a vegetation model. One end of the bottom bracket 8 is connected to the water tank, and the other end is connected to the lifting mechanism. The lifting mechanism is used to adjust the angle between the square support amplitude modulation frame and the water tank.

[0026] In this embodiment, the lifting mechanism includes a lifting rod 5, a fixing plate 7 and a lifting shaft 14. The fixing plate 7 is a long thick iron sheet structure. The fixing plate 7 is fixed above the water tank and welded to the lower end of the lifting shaft 14. The lifting rod 5 has a threaded structure. A limiting disc is provided on the top of the lifting rod 5. The lifting shaft 14 is fitted on the lifting rod 5, and the lifting rod 5 passes through the fixing plate 7 longitudinally and is connected to the bottom bracket 8; a hand-cranked opening and closing device 15 is provided on the lifting shaft 14, and the hand-cranked opening and closing device 15 is used to open or close the lifting state of the lifting rod 5.

[0027] In this embodiment, two perforated columns 9 and fasteners 16 that cooperate with the two perforated columns 9 are provided on the bottom bracket 8. The lifting rod 5 is connected to the two perforated columns 9 through the fasteners 16. The fasteners 16 can be bolts, hinges, etc.; the distance between the two perforated columns 9 is slightly larger than the cross-sectional diameter of the lifting rod 5, providing displacement compensation space for the lateral slight growth of the bottom bracket 8 during the lifting movement.

[0028] In this embodiment, triangular connectors 10 are provided at the four corners of the bottom bracket 8, and the block-shaped plastic blind ditch plate 2 is fixed to the bottom bracket 8 through the triangular connectors 10; both sides of the end of the bottom bracket 8 are provided with snap-fit protrusions 11, and the bottom bracket 8 is connected to the bottom of the sink through the snap-fit protrusions 11 with the help of a chimeric structure.

[0029] In this embodiment, vertical connectors 12 are provided at both ends of the guide rails 3 . The two guide rails 3 are symmetrically connected to the two sides of the block-shaped plastic blind ditch plate 2 through the vertical connectors 12 . The opposite surfaces of the two guide rails 3 are provided with track grooves 31 .

[0030] like Figure 4 As shown, connecting edges 42 are provided at both ends of the porous mesh vegetation retaining grid 4, and two mounting holes 43 are provided on the connecting edges 42. The two connecting edges 42 are respectively matched in the track grooves 31 of the two guide rails 3. The porous mesh vegetation retaining grid 4 is installed and fixed between the two guide rails 3 using the mounting holes 43 and fasteners such as nuts.

[0031] In this embodiment, the composite wave absorbing device is specifically applied, and the process includes:

[0032] 1) Based on factors such as the shape, size, and hydrodynamic conditions of the water tank, determine the relative angle between the square support modulator and the water tank, the position of the vegetation model on the two guide rails 3, and the parameter conditions of the vegetation model;

[0033] 2) According to the position of the vegetation model on the two guide rails 3, adjust the porous mesh vegetation holding grid 4 to the corresponding position and fix it with fasteners such as nuts;

[0034] 3) According to the parameter conditions of the vegetation model, the corresponding vegetation strip 13 is inserted into the corresponding plug-in slot 41 to form a vegetation model with the specified conditions;

[0035] 4) Adjust the relative angle between the square support and the water tank to a specified value by rotating the lifting rod 5, and then fix the lifting rod 5 using the hand-cranked opening and closing device 15;

[0036] 5) When the water flume is conducting the experiment, the waves will contact the vegetation model and the block plastic blind ditch plate 2 at a specified incident angle, realizing composite wave absorption.

[0037] Example 2:

[0038] In order to verify the effectiveness and effect of the present invention, the reflection coefficients K of the plastic blind ditch plate wave absorbing device and the composite wave absorbing device provided by the present invention are respectively measured in this embodiment. r The water depth H is 0.35m, the wave period T is 1.4s, and the wave height h is 0.03m~0.06m. The specific wave absorption performance is as follows Figure 5 As shown, it can be seen that the present invention has better wave-absorbing performance, thereby verifying the effectiveness and effect of the present invention.

Claims

1. A composite wave-breaking device combining a vegetation model with a plastic blind ditch, characterized in that: It includes a square support amplitude modulation frame, a lifting mechanism and a vegetation model. The square support amplitude modulation frame includes a bottom bracket, a block plastic blind ditch plate arranged on the bottom bracket, two guide slides respectively arranged on both sides of the top of the block plastic blind ditch plate, and a porous mesh vegetation holding grid arranged between the two guide slides. The porous mesh vegetation holding grid is provided with a plurality of plug-in slots, and the plug-in slots are used for inserting vegetation strips to form a vegetation model. One end of the bottom bracket is connected to the water tank, and the other end is connected to the lifting mechanism. The lifting mechanism is used to adjust the angle between the square support amplitude modulation frame and the water tank.

2. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 1 is characterized in that: The lifting mechanism includes a lifting rod, a fixing plate and a lifting shaft. The fixing plate is welded to the lower end of the lifting shaft. The lifting shaft is fitted on the lifting rod. The lifting rod passes through the fixing plate and is connected to the bottom bracket.

3. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 2 is characterized in that: The bottom bracket is provided with two columns with holes and fasteners matched with the two columns with holes, and the lifting rod is connected to the two columns with holes through the fasteners.

4. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 3 is characterized in that: The distance between the two columns with holes is greater than the cross-sectional diameter of the lifting rod.

5. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 1 is characterized in that: The four corners of the bottom bracket are all provided with triangular connecting pieces, and the block-shaped plastic blind ditch plate is fixed on the bottom bracket through the triangular connecting pieces.

6. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 1 is characterized in that: Both sides of the end of the bottom bracket are provided with clamping protrusions, and the bottom bracket is connected to the bottom of the sink through the clamping protrusions.

7. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 1 is characterized in that: Both ends of the guide rail are provided with vertical connecting pieces, and the guide rail is connected to the block-shaped plastic blind ditch plate through the vertical connecting pieces.

8. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 1 is characterized in that: The porous mesh vegetation retaining grid is provided with connecting edges at both ends, and mounting holes are provided on the connecting edges. The two connecting edges are respectively fitted in the track grooves of the two guide rails, and the porous mesh vegetation retaining grid is installed and fixed on the two guide rails through the mounting holes.

9. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 1, characterized in that: The porous mesh vegetation retaining grid is a mesh hollow structure, and each node position is provided with a plug-in slot.

10. The composite wave-absorbing device combining a vegetation model and a plastic blind ditch according to claim 2, characterized in that: A hand-operated opening and closing device is provided on the lifting shaft.

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