Double gate inner solitary wave generator

Abstract

The application relates to a double-gate internal isolated wave making device, which comprises a layered water pool, a sealing gate is arranged in the layered water pool, the sealing gate divides the layered water pool into a wave making section and a test section, the sealing gate makes the fluids in the test section and the wave making section not in communication, the upper layer of the layered water pool is filled with fresh water, the lower layer is filled with salt water, the sealing gate forms an internal interface difference between the wave making section and the test section, a non-sealing water gate can move left and right in the layered water pool, so that the distance between the non-sealing water gate and the sealing gate can be adjusted according to the wave making requirement; gate lifting mechanisms are symmetrically arranged at the two ends of the sealing gate, the gate lifting mechanisms control the lifting of the sealing gate, the whole operation is simple, and the wave making parameter control is accurate and convenient.

Description

Technical Field

[0001] This invention relates to the field of wave-generating devices for experimental water tanks, and in particular to a double-gate internal solitary wave-generating device. Background Technology

[0002] Internal waves are a type of internal wave phenomenon occurring in stratified oceans. Internal solitary waves, in particular, have large amplitudes, long propagation distances, and significant impacts on deep-sea equipment, exhibiting strong destructive power. With the gradual implementation of deep-sea entry, exploration, and development, human activities in the deep sea are increasing. Therefore, the motion response of deep-sea equipment caused by internal solitary waves is receiving increasing attention. Pool model tests are an important means of studying the environmental effects of internal solitary waves. They can simulate the stratified ocean environment under controllable conditions and generate internal solitary waves, partially replacing sea trials and providing verification for theoretical and numerical studies.

[0003] In stratified flow test pools, internal solitary wave generation is mostly carried out by imitating the surface wave pusher plate wave generation method. In pusher plate wave generation, the upper and lower plates move horizontally in opposite directions, disturbing the stratified water body and exciting internal waves. This causes serious damage to the stratification profile and makes it difficult to generate large-amplitude internal solitary waves.

[0004] Dam-break mechanisms can also generate internal isolated waves. A sealed gate is installed at one end of the stratified flow basin, creating a difference in the interface between the stratified fluids inside and outside the gate, thus forming an internal interface difference. When the gate is raised, the fluids on the higher side of the internal interface leak out towards the lower side, disturbing the stratified fluids and generating an internal isolated wave. The parameters of the internal wave are determined by two parameters: the internal interface difference and the length of the water body inside the gate. The gate's sealing performance is crucial in creating a controllable internal interface difference. This is typically achieved by moving the sealed gate left or right, which places high demands on the gate's sealing performance and is difficult to implement. Summary of the Invention

[0005] In response to the shortcomings of the existing production technology, the applicant provides a dual-gate internal isolated wave generating device. The sealed gate serves to create an internal interface difference, while the non-sealed movable gate serves to adjust the length of the water body in the wave generating section. The dual-gate scheme can effectively separate the two functions of a single gate, making it easy to operate and allowing for precise and convenient control of wave generating parameters.

[0006] The technical solution adopted in this invention is as follows:

[0007] A dual-gate internal isolated wave generating device includes a stratified flow tank. A sealed gate is installed within the stratified flow tank, dividing the tank into a wave-generating section and a test section. The sealed gate prevents the fluids in the test section and the wave-generating section from communicating. The upper layer of the stratified flow tank is filled with fresh water, and the lower layer with saline water. The sealed gate creates an internal interface difference between the wave-generating section and the test section. A non-sealed water-dividing gate moves left and right within the stratified flow tank to adjust the distance between the non-sealed water-dividing gate and the sealed gate according to wave generation requirements. Gate lifting mechanisms are symmetrically installed at both ends of the sealed gate, controlling its raising and lowering.

[0008] Its further technical solution lies in:

[0009] The structure of the sealing gate is as follows: it includes a wave-generating gate with multiple holes to connect the upper fluid inside and outside the sealing gate; a support frame is provided on the top surface of the wave-generating gate; the sides and bottom surfaces of the wave-generating gate are fitted with edging by bolts; and the wave-generating gate is fitted with a gate water seal by a P-type rubber sealing gasket.

[0010] The gate lifting mechanism has the following structure: a base, an electric cylinder fixed on the base, a sliding plate that slides up and down on the inner side of the electric cylinder, a horizontal flat plate installed on the sliding plate, the flat plate being snapped into the support frame, and an actuating rod on the top of the electric cylinder, the actuating rod being hinged to the support frame.

[0011] The P-type rubber sealing gasket is fixed to the wave-making gate on the flat side, and the circular side is designed to be hollow so that the rubber can be more easily compressed, thereby achieving a better sealing effect.

[0012] The gate water seal is in the shape of a "┗┛" structure.

[0013] The gate water seal is equipped with a bottom channel and a side channel, with the side channel having a slope that is narrower at the bottom and wider at the top.

[0014] The electric cylinder is driven by two electric cylinders, and the motor of the electric cylinder is a servo motor.

[0015] The non-sealed water diversion gate consists of a water baffle plate, a bottom plate, and a triangular support device.

[0016] The sealed gate, P-type rubber gasket, gate water seal, and non-sealed water diversion gate are all made of salt water corrosion resistant materials.

[0017] A crossbeam is installed between the top surfaces of the two airtight gate lifting mechanisms.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention features a compact and rational structure, and is easy to operate. Through the coordinated operation of components such as the sealed gate, gate lifting mechanism and control system, and the non-sealed diversion gate, the sealed gate functions to create an internal interface difference, while the non-sealed movable gate adjusts the length of the wave-generating section. The dual-gate scheme effectively separates the two functions of a single gate. The dual-gate internal solitary wave generating device provided by this invention can achieve internal solitary wave generation in a stratified flow pool without moving the sealed gate. The gate's sealing performance is easily guaranteed, and the length of the dam-break wave-generating water body can be adjusted via the non-sealed movable diversion gate. Operation is convenient, and wave-generating parameters are precisely and easily controlled. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation of the sealing gate and gate lifting mechanism of the present invention.

[0021] Figure 2 This is a schematic diagram illustrating the installation of the sealing gate, gate lifting mechanism, and gate water seal of the present invention.

[0022] Figure 3 for Figure 2 The main view.

[0023] Figure 4 This is a schematic diagram of the structure of the P-type rubber sealing gasket of the present invention.

[0024] Figure 5 This is a schematic diagram of the gate water seal structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the non-sealed water diversion gate of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the dual-gate internal solitary wave generation device of the present invention.

[0027] The components include: 1. Sealed gate; 2. Gate lifting mechanism; 3. Horizontal frame; 4. P-type rubber sealing gasket; 5. Gate water seal;

[0028] 101. Wave gate; 102. Edge banding; 103. Bolt; 104. Hole; 105. Support frame;

[0029] 201. Actuating rod; 202. Electric cylinder; 203. Sliding plate; 204. Flat plate; 205. Base;

[0030] 501. Bottom channel; 502. Side channel. Detailed Implementation

[0031] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] like Figures 1-7As shown, the dual-gate internal isolated wave generating device of this embodiment includes a stratified flow tank, in which a sealing gate 1 is installed. The sealing gate 1 divides the stratified flow tank into a wave generating section and a test section. The sealing gate 1 keeps the fluids in the test section and the wave generating section in a non-communicating state. The upper layer of the stratified flow tank is filled with fresh water, and the lower layer is filled with salt water. The sealing gate 1 creates an internal interface difference between the wave generating section and the test section. The non-sealed water distribution gate can move left and right in the stratified flow tank to adjust the distance between the non-sealed water distribution gate and the sealing gate 1 according to the wave generating requirements. Gate lifting mechanisms 2 are symmetrically installed at both ends of the sealing gate 1, and the gate lifting mechanisms 2 control the raising and lowering of the sealing gate 1.

[0033] The structure of the sealing gate 1 is as follows: it includes a wave-generating gate 101, which has multiple holes 104 to connect the upper fluid inside and outside the sealing gate 1. A support frame 105 is provided on the top surface of the wave-generating gate 101. The sides and bottom surfaces of the wave-generating gate 101 are fitted with edging 102 by bolts 103. The wave-generating gate 101 is fitted with a gate water seal 5 by a P-type rubber sealing gasket 4.

[0034] The gate lifting mechanism 2 has the following structure: it includes a base 205, an electric cylinder 202 is fixed on the base 205, a sliding plate 203 that slides up and down is provided on the inner side of the electric cylinder 202, a horizontal plate 204 is installed on the sliding plate 203, the plate 204 is snapped into the support frame 105, and an actuating rod 201 is provided on the top of the electric cylinder 202, the actuating rod 201 is hinged to the support frame 105.

[0035] The P-type rubber sealing gasket 4 is fixed on the flat side of the wave-making gate 101, and the circular side is designed to be hollow so that the rubber can be more easily compressed, thereby achieving a better sealing effect.

[0036] The gate water seal has a "┗┛" structure.

[0037] The gate water seal 5 is equipped with a bottom channel 501 and a side channel 502. The side channel 502 adopts a slope that is narrower at the bottom and wider at the top.

[0038] The electric cylinder 202 is driven by two electric cylinders, and the motor of the electric cylinder 202 is a servo motor.

[0039] The non-sealed water diversion gate consists of a water baffle plate, a bottom plate, and a triangular support device.

[0040] The sealed gate 1, P-type rubber sealing gasket 4, gate water seal 5, and non-sealed water diversion gate are all made of salt water corrosion resistant materials.

[0041] A crossbeam 3 is installed between the top surfaces of the two airtight gate lifting mechanisms 2.

[0042] The specific structure and function of the dual-gate internal solitary wave generation device described in this invention are as follows:

[0043] It mainly includes a sealed gate 1, a gate lifting mechanism 2 and control system, and a non-sealed water diversion gate, etc.

[0044] The sealing gate 1 consists of a wave-making gate 101, a P-type rubber sealing gasket 4 fixed thereon, and a gate water seal 5. The wave-making gate 101 is made of stainless steel. For ease of maintenance and replacement, the P-type rubber sealing strip is installed around the gate. The wave-making gate 101 has an opening 104 at the top, which allows the upper fluid inside and outside the gate to communicate.

[0045] The gate water seal 5 consists of a side channel 502 and a bottom channel 501, which are respectively installed and fixed to the bottom and side concrete pool walls of the gate. When the gate falls from the channel, the wave-making gate 101 and the gate water seal 5 are connected by P-type rubber sealing gaskets 4.

[0046] The P-type rubber sealing gasket 4 adopts a universal cover sealing form on the gate. The flat side is used to fix it on the gate, and the circular side is designed to be hollow so that the rubber can be more easily compressed, thereby achieving a better sealing effect.

[0047] The gate water seal 5 consists of a side channel 502 and a bottom channel 501. It is made of stainless steel to ensure corrosion resistance underwater. The side channel 502 adopts a slope design that is narrow at the bottom and wide at the top, so that the sealing gate 1 can be naturally pressed together when it is lowered. After the sealing gate 1 is lowered, the tightness between the P-type rubber sealing gasket 4 and the gate water seal 5 can be adjusted by adjusting the tightness of the fasteners on the side of the channel, which is more conducive to the adjustment of water tightness.

[0048] Electric cylinder 202 employs a dual-cylinder drive system, with a single PLC simultaneously issuing control commands to both cylinder drivers to ensure synchronization. The motor in electric cylinder 202 is a servo motor with continuously adjustable speed.

[0049] The sealing gate 1 is connected to the plate 204 of the electric cylinder 202.

[0050] The internal isolated wave generating gate system spans across the side wall of the stratified flow pool via the base 205 of the electric cylinder 202.

[0051] The non-sealed water diversion gate consists of a baffle plate, a base plate, and a triangular support device, such as... Figure 6 As shown. The non-sealed water diversion gate can be moved left and right to adjust the distance between the non-sealed water diversion gate and the sealed gate 1 according to the wave generation requirements.

[0052] Double-gate internal solitary wave generator, such as Figure 7As shown, the sealed gate 1 divides the water tank into a wave-generating section and a test section. The upper layer of the water tank is filled with fresh water, and the lower layer is filled with saline water. The barrier of the sealed gate 1 allows a difference in the internal interface between the wave-generating section and the test section. The non-sealed water-dividing gate can move left and right, adjusting the distance between the non-sealed water-dividing gate and the sealed gate 1 according to the wave-generating requirements.

[0053] In actual operation, the wave generation process of the solitary wave generator in the double gate is as follows:

[0054] S1. Prepare a saline solution of a certain concentration;

[0055] S2, the sealing gate 1 remains in the raised state;

[0056] S3. Move the non-sealed water diversion gate and adjust the distance between the non-sealed water diversion gate and the sealed gate 1.

[0057] S4. Fill the stratified water tank with fresh water (clean tap water is fine) to a certain depth through the water inlet at the bottom of the stratified water tank;

[0058] S5. Slowly fill the stratified water tank with brine to a certain depth through the water inlet at the bottom of the stratified water tank;

[0059] S6. The sealing gate 1 is lowered, making the wave generation section and the test section disconnected.

[0060] S7. If the freshwater depth is less than (greater than) the saline depth, a certain depth of saline in the wavemaking section is pumped back (replenished) through the bottom inlet of the wavemaking section in the stratified water tank. The test section and the wavemaking section form an inner wave interface layer. The opening 104 at the top of the sealing gate 1 allows the freshwater in the upper layer of the wavemaking section and the test section to be connected, so that the total liquid level (freshwater depth plus saline depth) of the wavemaking section and the test section remains equal.

[0061] S8. The PLC simultaneously sends control commands to the two electric cylinders 202 to quickly lift the sealing gate 1 to the state of leaving the water surface. Since the density of salt water is greater than that of fresh water, after the sealing gate 1 is lifted, the fluid at the interface difference will generate a dam-break disturbance under the action of gravitational potential, forming an internal solitary wave.

[0062] Adjust the depth of fresh water and salt water, and the distance between the non-sealed water distribution gate and the sealed gate 1 according to the wave generation requirements, and repeat steps S1 to S8.

[0063] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A dual-gate internal solitary wave generation device, characterized in that: The system includes a stratified flow tank, which is equipped with a sealed gate (1). The sealed gate (1) divides the stratified flow tank into a wave-generating section and a test section. The sealed gate (1) keeps the fluids in the test section and the wave-generating section in a non-communicating state. The upper layer of the stratified flow tank is filled with fresh water, and the lower layer is filled with salt water. The sealed gate (1) creates an internal interface difference between the wave-generating section and the test section. The non-sealed water-dividing gate moves left and right in the stratified flow tank to adjust the distance between the non-sealed water-dividing gate and the sealed gate (1) according to the wave-generating requirements. The sealed gate (1) is symmetrically equipped with gate lifting mechanisms (2) at both ends, which control the raising and lowering of the sealed gate (1). The structure of the sealed gate (1) is as follows: it includes a wave-generating gate (101), which has multiple holes (104) to allow the sealed gate to pass through. The upper and lower layers of the sealing gate (1) are connected to the fluid. The top surface of the wave-making gate (101) is provided with a support frame (105). The sides and bottom surfaces of the wave-making gate (101) are fitted with edging (102) by bolts (103). The wave-making gate (101) is fitted with a gate water seal (5) by a P-type rubber sealing gasket (4). The structure of the gate lifting mechanism (2) is as follows: it includes a base (205), an electric cylinder (202) is fixed on the base (205), a sliding plate (203) is provided on the inner side of the electric cylinder (202) for sliding up and down, a horizontal plate (204) is installed on the sliding plate (203), the plate (204) is snapped with the support frame (105), and an execution rod (201) is provided on the top of the electric cylinder (202). The execution rod (201) is hinged with the support frame (105).

2. The dual-gate internal solitary wave generation device as described in claim 1, characterized in that: The P-type rubber sealing gasket (4) is fixed on the planar side of the wave-making gate (101), and the circular side is designed to be hollow so that the rubber can be more easily compressed and thus achieve a better sealing effect.

3. The dual-gate internal solitary wave generation device as described in claim 2, characterized in that: The gate water seal (5) is in the form of a "┗┛" structure.

4. The dual-gate internal solitary wave generation device as described in claim 3, characterized in that: The gate water seal (5) is provided with a bottom channel (501) and a side channel (502), and the side channel (502) adopts a slope that is narrow at the bottom and wide at the top.

5. The dual-gate internal solitary wave generation device as described in claim 4, characterized in that: The electric cylinder (202) is driven by two electric cylinders, and the motor of the electric cylinder (202) is a servo motor.

6. The dual-gate internal solitary wave generation device as described in claim 5, characterized in that: The non-sealed water diversion gate consists of a water baffle plate, a bottom plate, and a triangular support device.

7. The dual-gate internal solitary wave generation device as described in claim 6, characterized in that: The sealed gate (1), P-type rubber sealing gasket (4), gate water seal (5), and non-sealed water diversion gate are all made of salt water corrosion resistant materials.

8. The dual-gate internal solitary wave generation device as described in claim 7, characterized in that: A crossbeam (3) is installed between the top surfaces of the two airtight gate lifting mechanisms (2).

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