A double-plate multifunctional internal wave generator

Abstract

The invention discloses a double-plate multifunctional internal wave maker, which belongs to the technical field of ocean internal wave simulation. The double-plate multifunctional internal wave maker comprises a frame, an upper push plate wave maker system and a lower push plate wave maker system installed on the frame, and a motor mounting plate installed on the frame, wherein the bottom of the upper push plate of the upper push plate wave maker system and the top of the lower push plate of the lower push plate wave maker system are flush and located on the boundary between the upper and lower fluid layers, and internal waves or internal solitary waves can be generated by controlling the upper push plate and the lower push plate to move horizontally in opposite directions with their own speed acceleration and stroke, and the upper and lower push plates are modularized, the upper and lower push plates are respectively spliced ​​by a number of identical push plate modules, and different numbers of modules are spliced ​​into push plates of different lengths, so that the length ratio of the upper and lower push plates can be changed, that is, the layer depth ratio of the upper and lower fluid layers can be changed, and finally both internal solitary waves and continuous internal waves can be generated, thereby solving the problem that the existing wave maker can only generate internal waves with a fixed layer depth ratio.

Description

Technical Field

[0001] The invention relates to the technical field of ocean internal wave simulation, and in particular to a double-plate multifunctional internal wave maker. Background Art

[0002] In the actual ocean, the temperature, salinity and density of seawater vary with space and time. Since the density distribution of seawater is often in an uneven state, the occurrence of internal waves in the ocean is a relatively common phenomenon. Internal waves are different from surface waves. The maximum amplitude occurs below the sea surface. Usually, the amplitude of internal waves is from a few meters to tens of meters, and some can reach hundreds of meters. Internal waves can transfer energy from the upper layer of the ocean to the deep layer, and can also bring the colder deep seawater and nutrients to the warmer shallow layer, promoting the reproduction of organisms. Internal waves cause the isopycnal surface to fluctuate, causing the size and direction of the sound speed to change, which has a great impact on sonar, is conducive to the concealment of submarines underwater, and also has a destructive effect on offshore facilities. Therefore, the study of internal waves is very important.

[0003] Most of the existing internal wave generators are fixed layer depth ratio internal wave generators, which can only generate internal solitary waves or internal waves for a certain fixed upper and lower layer fluid layer depth ratio. When the upper and lower layer fluid layer depth ratio is changed, the ideal waveform cannot be generated. In addition, most of the existing internal wave generators are single-function internal wave generators, which can only generate internal solitary waves or continuous internal waves, and cannot have the function of generating two different waves at the same time. Therefore, it is urgent to provide a multifunctional wave generator that can generate both internal solitary waves and laboratory internal waves to solve the defects existing in the existing technology. Summary of the invention

[0004] The invention provides a double-plate multifunctional internal wave generator, which can generate both internal solitary waves and continuous internal waves by changing the layer depth ratio and the wave generator function setting, thus solving the problem that the existing wave generator can only generate internal waves with a fixed layer depth ratio.

[0005] The specific technical solutions provided by the present invention are as follows:

[0006] The present invention provides a double-plate multifunctional internal wave maker, comprising a frame, an upper push plate wave maker system and a lower push plate wave maker system mounted on the frame, and a motor mounting plate mounted on the frame, wherein the upper push plate wave maker system comprises a first servo motor fixed on the motor mounting plate, a first lead screw support seat and a first lead screw support end fixed on the machine body, a first lead screw rotatably mounted on the first lead screw support seat, a first linear guide rail group fixedly mounted on the machine body, an upper push plate seat slidably mounted on the machine body, an upper push plate fixed on the upper push plate seat, and at least one upper push plate module mounted on the upper push plate, wherein the first lead screw drives The cam is mounted on the support frame of the second cam and is provided with a toothed structure, and the toothed structure is connected with the toothed structure to form a vertical cam, and the toothed structure is connected with the toothed structure to form a vertical cam. The cam is mounted on the support frame of the second cam and is provided with a toothed structure.

[0007] Optionally, the first servo motor uses a first coupling to drive the first lead screw to rotate, and the second servo motor uses a second coupling to drive the second lead screw to rotate.

[0008] Optionally, the first servo motor and the second servo motor are installed side by side on the motor mounting plate, the first screw support seat and the first screw support end are respectively located at two ends of the first screw, and the second screw support seat and the second screw support end are respectively located at two ends of the second screw.

[0009] Optionally, waist-shaped holes are provided on both sides of the upper push plate, and the upper push plate module is installed in the waist-shaped holes.

[0010] Optionally, waist-shaped holes are provided on both sides of the push-down plate, and the push-down plate module is installed in the waist-shaped holes.

[0011] Optionally, the first linear guide rail group and the second linear guide rail group each include two linear guide rails and two sliders arranged on each of the linear guide rails.

[0012] The beneficial effects of the present invention are as follows:

[0013] The embodiment of the present invention provides a double-plate multifunctional internal wave maker, comprising a frame, an upper push plate wave maker system and a lower push plate wave maker system installed on the frame, and a motor mounting plate installed on the frame, wherein the bottom of the upper push plate of the upper push plate wave maker system and the top of the lower push plate of the lower push plate wave maker system are flush and located on the boundary between the upper and lower fluid layers, and the upper push plate and the lower push plate can be controlled to move horizontally in opposite directions with their respective speed acceleration and stroke to generate internal waves or internal solitary waves, and the upper and lower push plates are modularized, the upper and lower push plates are respectively composed of a number of identical push plate modules, and different numbers of modules are spliced ​​into push plate modules of different lengths, so that the length ratio of the upper and lower push plates can be changed, that is, the layer depth ratio of the upper and lower fluid layers can be changed, and finally, by changing the layer depth ratio and changing the movement of the wave-making push plate, both internal solitary waves and continuous internal waves can be generated, thereby solving the problem that the existing wave maker can only generate internal waves with a fixed layer depth ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is an isometric structural schematic diagram of a double-plate multifunctional internal wave generator according to an embodiment of the present invention;

[0016] Figure 2 It is a schematic diagram of the top view of a double-plate multifunctional internal wave generator according to an embodiment of the present invention;

[0017] Figure 3 It is a front view structural schematic diagram of a double-plate multifunctional internal wave generator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The following will be combined Figure 1~Figure 3 A double-plate multifunctional internal wave generator according to an embodiment of the present invention is described in detail.

[0020] refer to Figure 1 and Figure 2As shown, a double-plate multifunctional internal wave maker provided by an embodiment of the present invention includes a frame 16, an upper push plate wave making system A and a lower push plate wave making system B installed on the frame 16, and a motor mounting plate 3 installed on the frame, wherein the upper push plate wave making system A includes a first servo motor 1 fixed on the motor mounting plate 3, a first lead screw support seat 4 and a first lead screw support end 9 fixed on the machine body 16, a first lead screw 6 rotatably mounted on the first lead screw support seat 4, a first linear guide rail group 20 fixedly mounted on the machine body 16, an upper push plate seat 8 slidably mounted on the machine body 16, an upper push plate 11 fixed on the upper push plate seat 8, at least one upper push plate module 12 installed on the upper push plate 11, and the first lead screw 6 is used to drive the upper push plate 11 to do reciprocating motion; the lower push plate wave-making system B includes a second servo motor 2 fixed on the motor mounting plate 3, a second screw support seat 5 and a second screw support end 10 fixed on the fuselage 16, a second screw 15 rotatably mounted on the second screw support seat 5, a second linear guide rail group 19 fixedly mounted on the fuselage 16, a lower push plate seat 7 slidably mounted on the fuselage 16, a lower push plate 13 fixed on the lower push plate seat 7, and at least one lower push plate module 14 mounted on the lower push plate 13, and the second screw 15 drives the lower push plate 13 to do reciprocating motion; the first linear guide rail group 20 is located on the inner side of the second linear guide rail group 19, and the lower push plate module 14 is located below the upper push plate module 12.

[0021] refer to Figure 1 and Figure 2 As shown, the first servo motor 1 uses the first coupling 17 to drive the first lead screw 6 to rotate, and the second servo motor 2 uses the second coupling 18 to drive the second lead screw 15 to rotate. That is, the first lead screw 6 and the second lead screw 15 are connected to the first servo motor 1 and the second servo motor 2 respectively by couplings, and then the first lead screw 6 and the second lead screw 15 can be driven by the first servo motor 1 and the second servo motor 2 respectively to rotate forward or reverse as needed. Figure 1 and Figure 2 As shown, the first servo motor 1 and the second servo motor 2 are installed side by side on the motor mounting plate 3, the first screw support seat 4 and the first screw support end 9 are respectively located at the two ends of the first screw 6, and the second screw support seat 5 and the second screw support end 10 are respectively located at the two ends of the second screw 16.

[0022] refer to Figure 1 and Figure 2As shown, waist-shaped holes are provided on both sides of the upper push plate 11, and the upper push plate module 12 is installed in the waist-shaped holes. The waist-shaped holes processed on both sides of the upper push plate 11 can adjust the spacing between the two after the upper push plate module 12 is installed, so as to ensure that the two adjacent upper push plate modules 12 are closely fitted. Waist-shaped holes are provided on both sides of the lower push plate 13, and the lower push plate module 14 is installed in the waist-shaped holes on both sides of the lower push plate. The waist-shaped holes processed on both sides of the lower push plate 13 can adjust the spacing between the two after the lower push plate module 14 is installed, so as to ensure that the two adjacent lower push plate modules 14 are closely fitted. The double-plate multifunctional internal wave maker of the embodiment of the present invention adopts a modular upper push plate module 12 and a lower push plate module 14 to form an upper and lower push plate, that is, the upper and lower push plates are respectively composed of a plurality of identical upper push plate modules 12 and lower push plate modules 14 spliced ​​together, and different numbers of upper push plate modules 12 and lower push plate modules 14 are spliced ​​together to form push plates of different lengths, which can change the length ratio of the upper and lower push plates, that is, change the layer depth ratio of the upper and lower fluids. Therefore, the double-plate multifunctional internal wave maker of the embodiment of the present invention can change the length ratio of the upper and lower push plates by changing the number of upper push plate modules 12 set on the upper push plate 11 or changing the number of lower push plate modules 14 set on the lower push plate 13, and can change different layer depth ratios, thereby generating both internal solitary waves and continuous internal waves.

[0023] refer to Figure 2 and Figure 3 As shown, the first linear guide group 20 and the second linear guide group 19 each include two linear guides and two sliders arranged on each linear guide. The upper push plate seat 8 is installed on the first linear guide group 20. To ensure the connection strength, the first linear guide group 20 includes two linear guides, and each linear guide is equipped with two sliders. The upper push plate seat 8 is connected to the nut seat on the first lead screw 6, and the nut seat cooperates with the first lead screw for power transmission. When the entire upper push plate wave-making system A is in operation, the first linear guide group bears all the loads of the entire upper push plate wave-making system A during wave-making, and the first lead screw only plays a role in power transmission. The lower push plate seat 7 is installed on the second linear guide group 19. To ensure the connection strength, the second linear guide group 19 includes two linear guides, and each linear guide is equipped with two sliders. The lower push plate seat 7 is connected to the nut seat on the second lead screw 15, and the nut seat cooperates with the second lead screw for power transmission. When the entire push-down plate wave-making system B is in operation, the second linear guide rail group bears all the loads of the entire push-down plate wave-making system B during wave-making, and the second lead screw only plays a role in power transmission.

[0024] refer to Figure 1 and Figure 2As shown, the first servo motor 1 of the upper push plate wave-making system A is flexibly connected to the first screw 6 through the first coupling 17. The first screw 6 is fixed on the frame 16 through the first screw support seat 4 and the first screw support end 9. The frame 16 can be connected to the wave flume. The upper push plate modules 12 are selected in different quantities according to the experimental conditions and are installed on the upper push plate 11 from bottom to top. The upper push plate 11 has waist-shaped holes on both sides. The waist-shaped holes are used to adjust the spacing between the upper push plate modules 12 after installation to ensure that the two adjacent upper push plate modules 12 fit tightly. The control terminal controls the first servo motor 1 to rotate with a certain speed curve and acceleration curve, thereby driving the first screw 6 to rotate. The first screw 6 converts the rotational motion of the first servo motor 1 into the reciprocating linear motion of the upper push plate 11 through the nut seat that cooperates with it.

[0025] refer to Figure 1 , Figure 2 and Figure 3 As shown, the second servo motor 2 of the push plate wave making system B is flexibly connected to the second lead screw 15 through the second coupling 18, and the second lead screw 15 is fixed on the frame 16 through the second lead screw support seat 5 and the second lead screw support end 10. The push plate modules 14 are set in different quantities according to the needs of the experimental situation, and are installed on the push plate 13 from bottom to top. The two sides of the push plate 13 are processed with waist-shaped holes. The spacing between the two push plate modules 14 can be adjusted after the push plate modules are installed to ensure that the two adjacent push plate modules 14 fit closely. The control terminal controls the second servo motor 2 to rotate at a certain speed curve and acceleration curve, thereby driving the second lead screw 15. The second lead screw 15 converts the rotational motion of the second servo motor 2 into the reciprocating linear motion of the push plate 13 through the nut seat matched with it.

[0026] For example, one end of the control terminal is connected to the first servo motor 1 and the second servo motor 2, respectively, and the other end is connected to the host computer. The control terminal receives the instructions issued by the host computer software, converts them into servo motion commands, and transmits them to the first servo motor 1 and the second servo motor 2 to control the upper push plate 11 and the lower push plate 13 to move in the opposite direction with their respective speed curves, acceleration curves and strokes. For example, the control terminal can be a mobile phone or a microcomputer, which is not limited in the embodiments of the present invention.

[0027] The process of generating continuous internal waves by using the double-plate multifunctional internal wave generator of the embodiment of the present invention is as follows: 1) Select different numbers of upper push plate modules 12 and lower push plate modules 14 according to the experimental setting and install and fix them on the upper push plate 11 and the lower push plate 13 respectively; 2) Inject two layers of fluid with different densities into the wave-making tank, and make the density jump layer located at the boundary between the upper push plate 11 and the lower push plate 13, and the liquid level of the upper fluid layer is flush with or slightly lower than the top of the upper push plate module 12 which is located at the uppermost position in the upper push plate 11; 3) Open the upper computer wave-making software in the existing technology used in conjunction, set the wave-making cycle, stroke, number of waves, upper and lower fluid depths and other parameters, and the operation and control terminal receives the motion command of the upper computer, converts it into a drive servo motion signal, drives the servo motor to move, and drives the upper push plate and the lower push plate to continuously move in the opposite direction through the power transmission system, so that the two layers of fluid in the tank flow in the opposite direction, thereby generating convex or concave continuous internal waves at the interface between the two layers of fluid.

[0028] The process of generating internal solitary waves by using the double-plate multifunctional internal wave generator of the embodiment of the present invention is as follows: 1) select different numbers of upper push plate modules 12 and lower push plate modules 14 according to the experimental setting and install and fix them on the upper push plate 11 and the lower push plate 13 respectively; 2) inject two layers of fluid with different densities into the wave-making tank, and make the density jump layer located at the boundary between the upper push plate 11 and the lower push plate 13, and the liquid level of the upper fluid layer is flush with or slightly lower than the top of the upper push plate module 12 which is located at the uppermost position in the upper push plate 11; 3) open the upper computer wave-making software, set the parameters such as the wave height, amplitude, convex or concave of the internal solitary wave, run it, and the control terminal receives the motion command of the upper computer, converts it into a driving servo motion signal, drives the servo motor to move, and drives the upper and lower push plates to move continuously in the opposite direction through the power transmission system, so that the two layers of fluid in the tank flow in the opposite direction, thereby generating a convex or concave internal solitary wave at the interface between the two layers of fluid.

[0029] The embodiment of the present invention provides a double-plate multifunctional internal wave maker, comprising a frame, an upper push plate wave maker system and a lower push plate wave maker system installed on the frame, and a motor mounting plate installed on the frame, wherein the bottom of the upper push plate of the upper push plate wave maker system and the top of the lower push plate of the lower push plate wave maker system are flush and located on the boundary between the upper and lower fluid layers, and the upper push plate and the lower push plate can be controlled to move horizontally in opposite directions with their respective speed acceleration and stroke to generate internal waves or internal solitary waves, and the upper and lower push plates are modularized, the upper and lower push plates are respectively composed of a number of identical push plate modules, and different numbers of modules are spliced ​​into push plate modules of different lengths, so that the length ratio of the upper and lower push plates can be changed, that is, the layer depth ratio of the upper and lower fluid layers can be changed, and finally, by changing the layer depth ratio and changing the movement of the wave-making push plate, both internal solitary waves and continuous internal waves can be generated, thereby solving the problem that the existing wave maker can only generate internal waves with a fixed layer depth ratio.

[0030] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A double-plate multifunctional internal wave generator, characterized in that: The double-plate multifunctional internal wave maker includes a fuselage, an upper push plate wave-making system and a lower push plate wave-making system installed on the fuselage, and a motor mounting plate installed on the fuselage, wherein the upper push plate wave-making system includes a first servo motor fixed on the motor mounting plate, a first screw support seat and a first screw support end fixed on the fuselage, a first screw rotatably mounted on the first screw support seat, a first linear guide rail group fixedly mounted on the fuselage, an upper push plate seat slidably mounted on the fuselage, an upper push plate fixed on the upper push plate seat, and at least one upper push plate module installed on the upper push plate, wherein the first screw drives the upper push plate to reciprocate; the lower push plate wave-making system includes a second servo motor fixed on the motor mounting plate, a second screw support seat and a second screw support end fixed on the fuselage, a first screw rotatably mounted on the first screw support seat, a first linear guide rail group fixedly mounted on the fuselage, an upper push plate seat slidably mounted on the fuselage, an upper push plate fixed on the upper push plate seat, and at least one upper push plate module installed on the upper push plate, wherein the first screw drives the upper push plate to reciprocate; the lower push plate wave-making system includes a second servo motor fixed on the motor mounting plate, a second screw support seat and a second screw support end fixed on the fuselage, a The cam is an angular channel block which is arranged on a pair of camshafts which are connected to each other to move the camshafts back and forth along the length of the camshafts. The camshafts are connected by a threaded cantilever cam which is located adjacent to the top of the camshaft and are used to move the camshafts back and forth.

2. The double-plate multifunctional internal wave generator according to claim 1, characterized in that: The first servo motor drives the first lead screw to rotate by using a first coupling, and the second servo motor drives the second lead screw to rotate by using a second coupling.

3. The double-plate multifunctional internal wave generator according to claim 1, characterized in that: The first servo motor and the second servo motor are installed side by side on the motor mounting plate, the first screw support seat and the first screw support end are respectively located at two ends of the first screw, and the second screw support seat and the second screw support end are respectively located at two ends of the second screw.

4. The double-plate multifunctional internal wave generator according to claim 2 or 3, characterized in that: Waist-shaped holes are arranged on both sides of the upper push plate, and the upper push plate module is installed in the waist-shaped holes.

5. The double-plate multifunctional internal wave generator according to claim 2 or 3, characterized in that: Waist-shaped holes are arranged on both sides of the push-down plate, and the push-down plate module is installed in the waist-shaped holes.

6. The double-plate multifunctional internal wave generator according to claim 1, characterized in that: The first linear guide rail group and the second linear guide rail group each include two linear guide rails and two sliders arranged on each of the linear guide rails.

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