Slope type wave absorbing device with adjustable porosity

Abstract

The invention provides a porosity-adjustable slope type wave absorbing device, which comprises a support device, a plurality of wave absorbing devices, a plurality of wave absorbing devices, a plurality of wave absorbing devices and a plurality of wave absorbing devices, the displacement adjusting device comprises a support fixedly installed on the supporting column and a displacement adjusting system fixedly installed on the support. The wave absorbing plate main body comprises a supporting frame, a lower-layer wave absorbing plate, an upper-layer wave absorbing plate and a spring reel; two ends of the supporting frame are respectively connected with the base and the strut through hinges; the lower-layer wave absorbing plate is fixedly mounted on the supporting frame; the cylinder part of the spring reel is fixed on the lower-layer wave absorbing plate; one end of the upper-layer wave absorbing plate is connected with the belt part of the spring reel through a rivet, and the other end is connected with the connecting structure of the displacement adjusting system through a bolt. According to the invention, continuous and linear accurate adjustment of the porosity is realized.

Description

Technical Field

[0001] This invention relates to the fields of marine engineering and coastal protection technology, specifically to a slope-type wave-damping device with adjustable porosity. Background Technology

[0002] In the field of coastal and marine engineering, sloping wave-damping structures are widely used for wave protection in ports, breakwaters, and other waterways. Wave tank model tests are a crucial component of these tests, and porous inclined thin plates, as an effective wave-damping device in wave tank model tests, rely heavily on porosity parameters for their wave-damping effectiveness. Research has confirmed that porosity directly determines the structure's reflection and transmission coefficients; excessively high or low porosity cannot achieve optimal wave attenuation, and an optimal porosity value exists under specific wave conditions.

[0003] Traditional wave-damping structures with fixed porosity are difficult to adapt to different working conditions and cannot maintain high wave-damping efficiency at all times. In existing technologies, porosity adjustment is typically achieved by physically disassembling and replacing different perforated plates. This method has significant drawbacks, including cumbersome construction, high cost, long adjustment cycles, and an inability to respond to real-time changes in wave conditions. Its lack of flexibility and adaptability limits its application in complex and variable laboratory and engineering practices. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a slope-type wave damping device with adjustable porosity.

[0005] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0006] A ramp-type wave-damping device with adjustable porosity, comprising:

[0007] The support device includes a base and a support column fixedly mounted on one end of the base;

[0008] The displacement adjustment device includes a bracket fixedly installed on the support column and a displacement adjustment system fixedly installed on the bracket;

[0009] The main body of the wave-damping plate includes a support frame, a lower wave-damping plate, an upper wave-damping plate, and a spring roller. The two ends of the support frame are connected to the base and the support column respectively by hinges. The lower wave-damping plate is fixedly installed on the support frame. The cylindrical part of the spring roller is fixed to the lower wave-damping plate. One end of the upper wave-damping plate is connected to the belt part of the spring roller by rivets, and the other end is connected to the connection structure of the displacement adjustment system by bolts.

[0010] The upper wave-damping plate is moved relative to the lower wave-damping plate by a displacement adjustment system, thereby changing the overlapping area of ​​the orifices on the two wave-damping plates and thus achieving continuous control of the overall porosity of the wave-damping device.

[0011] Furthermore, the base has a rectangular structure, with two pillars vertically fixed at both ends of one short side of the base.

[0012] Furthermore, the displacement adjustment system also includes a housing, a manual push-pull rod, a drive motor, and a control system; the housing has a cubic structure; the manual push-pull rod is a handle-shaped pull rod located on the side of the housing; the drive motor is a stepper motor located inside the housing; the control system is electrically connected to the drive motor to achieve remote control.

[0013] Furthermore, the connection structure of the displacement adjustment system is a rectangular thin sheet extending from the side of the housing near the main body of the wave-damping plate.

[0014] Furthermore, the bracket has an inverted L-shaped structure, consisting of a vertical plate and a horizontal plate, and the vertical plate and the horizontal plate are reinforced by a triangular plate; the vertical plate of the bracket is connected to the upper part of the support column by screws, and the horizontal plate of the bracket is connected to the lower surface of the housing of the displacement adjustment system.

[0015] Furthermore, the support frame is a scalloped frame, with one end connected to the short side of the base away from the support column via a hinge, and the other end connected to the upper part of the two support columns via a hinge.

[0016] Furthermore, the lower wave-damping plate is a rectangular thin sheet with square openings, and its lower surface is welded and fixed to the upper surface of the support frame.

[0017] Furthermore, the upper wave-damping plate is a rectangular thin sheet with square openings.

[0018] Furthermore, the upper and lower wave-damping plates have the same tilt angle.

[0019] Furthermore, the gap between the upper and lower wave-damping plates is 5mm.

[0020] The beneficial effects of this invention are:

[0021] (1) Achieved continuous and linear precise adjustment of porosity: Based on the principle of double-layer plate misalignment, the porosity can be changed steplessly and continuously through simple linear displacement. The porosity and displacement have a clear linear relationship, and the adjustment process is precise and controllable. It can quickly and accurately match the optimal porosity parameters under different wave conditions, overcoming the problem of poor adaptability of fixed porosity structures.

[0022] (2) Simple and reliable structure, low manufacturing and maintenance costs: The core adjustment mechanism of this invention consists of only two rectangular thin plates with square holes, which are compact and easy to process and manufacture.

[0023] (3) The adjustment method is flexible, efficient and easy to automate: The device of the present invention can be manually adjusted by a push-pull rod to meet basic needs, or it can be controlled by a motor to achieve one-button operation or fully automatic intelligent adjustment.

[0024] (4) Stable wave-damping performance and high overall efficiency: By optimizing the porosity of the main structure of the wave-damping plate in real time, the device of the present invention can always control the reflection coefficient and transmission coefficient within the ideal range, attenuate wave energy to the maximum extent, avoid interference caused by secondary reflection of transmitted waves, and thus maintain high and stable wave-damping efficiency under various working conditions.

[0025] (5) Strong engineering applicability and scalability: The device of the present invention is not only suitable for wave tank tests in the laboratory, but also, through the robust connection of the support device, displacement adjustment device and the main body of the wave damping plate, as well as the corrosion-resistant design of the stainless steel material, it is easy to apply on a large scale in actual marine engineering, such as ports and breakwaters. In addition, the upper wave damping plate of the device can be replaced with different materials to change the roughness of the contact surface of the device, thus having good scalability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the slope-type wave-damping device with adjustable porosity described in this invention.

[0027] Figure 2 This is a schematic diagram of the frame of the slope-type wave-damping device with adjustable porosity described in this invention.

[0028] Figure 3 This is a schematic diagram of the support device and displacement adjustment device described in this invention.

[0029] Figure 4 This is a schematic diagram of the main body of the wave-damping plate described in this invention.

[0030] In the diagram: 1. Base; 2. Hinge; 3. Screw; 4. Spring coil; 5. Bolt; 6. Lower wave-damping plate; 7. Support frame; 8. Upper wave-damping plate; 9. Rivet; 10. Displacement adjustment system; 11. Bracket; 12. Column. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0032] like Figure 1-4 As shown, a slope-type wave-damping device with adjustable porosity includes a support device, a displacement adjustment device, and a wave-damping plate body.

[0033] The support device includes a base 1 and two support columns 12. The two support columns 12 are welded vertically to both ends of a short side of the rectangular base 1.

[0034] The displacement adjustment device includes a displacement adjustment system 10 and a support 11. The displacement adjustment system 10 includes a housing, a manual push-pull rod, a connecting structure, a drive motor, and a control system. The housing is a cube structure. The manual push-pull rod is a handle-like rod located on the side of the housing. The connecting structure is a rectangular thin plate extending from the side of the housing near the main body of the wave-damping plate. The drive motor is a stepper motor located inside the housing. The control system is electrically connected to the drive motor to achieve remote control. The support 11 is an inverted L-shaped structure composed of a vertical plate and a horizontal plate. The vertical and horizontal plates are made of stainless steel and are reinforced by two triangular plates. The vertical plate of the support 11 is connected to the upper part of two support columns 12 by screws 3. The upper surface of the horizontal plate of the support 11 is welded to the lower surface of the housing of the displacement adjustment system 10.

[0035] The main body of the wave-damping plate includes an upper wave-damping plate 8, a lower wave-damping plate 6, a support frame 7, and a spring coil 4. The support frame 7 is a H-shaped stainless steel frame. One end of the support frame 7 is connected to the short side of the base 1 away from the support column 12 via two hinges 2, and the other end is connected to the upper part of the two support columns 12 via two hinges 2 respectively. The lower wave-damping plate 6 is a rectangular thin sheet with square openings. The lower surface of the lower wave-damping plate 6 is welded and fixed to the upper surface of the support frame 7 to ensure that the main body of the wave-damping plate has a certain rigidity. The cylindrical part of the spring coil 4 is welded to the end of the upper surface of the lower wave-damping plate 6 away from the support column 12. The upper wave-damping plate 8 is a rectangular thin sheet with square openings. One end has two connection ports, and the other end has a connection structure. The connection ports of the upper wave-damping plate 8 are connected to the belt part of the spring coil 4 via rivets 9, and the connection structure of the upper wave-damping plate 8 is connected to the connection structure of the displacement adjustment system 10 via bolts 5.

[0036] The upper wave-damping plate 8 and the lower wave-damping plate 6 have the same tilt angle, ensuring that the displacement adjustment system 10 can control the upper wave-damping plate 8 to move in a direction parallel to the plane of the lower wave-damping plate 6, thereby adjusting the porosity. The displacement of the upper wave-damping plate 8 is linearly related to the porosity of the slope-type wave-damping device. The gap between the upper wave-damping plate 8 and the lower wave-damping plate 6 is 5 mm to reduce the influence of an excessively large gap between the two wave-damping plates on the porosity of the slope-type wave-damping device, while ensuring the principle of a single variable in the experiment.

[0037] In this embodiment, the upper wave-damping plate 8 can be replaced with materials of different roughness as needed. The base 1, support column 12, lower wave-damping plate 6, spring coil 4, and hinge 2 are all made of stainless steel.

[0038] Based on the above structure, the slope-type wave-damping device achieves porosity control based on the double-plate misalignment principle. Specifically, the initial position is when the orifices of the upper wave-damping plate 8 and the lower wave-damping plate 6 are completely aligned. During wave pool testing, the slope-type wave-damping device first calculates the required porosity based on wave parameters. Then, according to the required porosity, the tension on the upper wave-damping plate 8 is manually or electrically increased or decreased through the displacement adjustment system 10, causing the spring coil 4 to extend or retract, driving the upper wave-damping plate 8 to move to the required position. Finally, as the waves propagate to the upper wave-damping plate 8, the adjusted pore structure guides the water flow to form a high-speed shear flow within the channels, significantly improving the eddy viscosity dissipation intensity and increasing the wave-damping efficiency. The interaction between the broken backflow and the incoming flow further increases energy loss and enhances turbulence characteristics.

[0039] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A ramp-type wave-damping device with adjustable porosity, characterized in that, include: The support device includes a base (1) and a support column (12) fixedly installed on one end of the base (1). The displacement adjustment device includes a bracket (11) fixedly installed on the support column (12) and a displacement adjustment system (10) fixedly installed on the bracket (11). The main body of the wave-damping plate includes a support frame (7), a lower wave-damping plate (6), an upper wave-damping plate (8), and a spring roller (4); the two ends of the support frame (7) are connected to the base (1) and the support column (12) respectively by hinges (2); the lower wave-damping plate (6) is fixedly installed on the support frame (7); the cylindrical part of the spring roller (4) is fixed on the lower wave-damping plate (6); one end of the upper wave-damping plate (8) is connected to the belt part of the spring roller (4) by rivets (9), and the other end is connected to the connection structure of the displacement adjustment system (10) by bolts (5); The upper wave-damping plate (8) is driven to move relative to the lower wave-damping plate (6) by the displacement adjustment system (10) to change the overlapping area of ​​the orifices on the two wave-damping plates, thereby realizing the continuous control of the overall porosity of the wave-damping device.

2. The slope-type wave-damping device with adjustable porosity according to claim 1, characterized in that, The base (1) is a rectangular structure, and two pillars (12) are respectively vertically fixed at both ends of a short side of the base (1).

3. The slope-type wave-damping device with adjustable porosity according to claim 1, characterized in that, The displacement adjustment system (10) also includes a housing, a manual push-pull rod, a drive motor, and a control system; the housing is a cube structure; the manual push-pull rod is a handle-shaped pull rod located on the side of the housing; the drive motor is a stepper motor located inside the housing; the control system is electrically connected to the drive motor to realize remote control.

4. The slope-type wave-damping device with adjustable porosity according to claim 3, characterized in that, The connection structure of the displacement adjustment system (10) is a rectangular thin sheet extending from the side of the shell near the main body of the wave-damping plate.

5. The slope-type wave-damping device with adjustable porosity according to claim 3, characterized in that, The bracket (11) is an inverted L-shaped structure, consisting of a vertical plate and a horizontal plate, and the vertical plate and the horizontal plate are reinforced by a triangular plate; the vertical plate of the bracket (11) is connected to the upper part of the support column (12) by screws (3), and the horizontal plate of the bracket (11) is connected to the lower surface of the housing of the displacement adjustment system (10).

6. The slope-type wave-damping device with adjustable porosity according to claim 1, characterized in that, The support frame (7) is a s-shaped frame. One end of it is connected to the short side of the base (1) away from the support column (12) by a hinge (2), and the other end is connected to the upper part of the two support columns (12) by a hinge (2).

7. The slope-type wave-damping device with adjustable porosity according to claim 1, characterized in that, The lower wave-damping plate (6) is a rectangular thin sheet with square openings, and its lower surface is welded and fixed to the upper surface of the support frame (7).

8. The slope-type wave-damping device with adjustable porosity according to claim 1, characterized in that, The upper wave-damping plate (8) is a rectangular thin sheet with square openings.

9. The slope-type wave-damping device with adjustable porosity according to claim 1, characterized in that, The upper wave-damping plate (8) and the lower wave-damping plate (6) have the same tilt angle.

10. The slope-type wave-damping device with adjustable porosity according to claim 1, characterized in that, The gap between the upper wave-damping plate (8) and the lower wave-damping plate (6) is 5 mm.

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