A water tunnel cavitation experiment device

Abstract

The present invention discloses a water tunnel cavitation experiment device, which relates to the technical field of water tunnel cavitation experiments. It includes a device base and an experimental box body. There are two vertically arranged and one horizontally arranged wave-making push plates in the experimental box body. It also includes a driving component and a wave-making component. The driving component includes a driving motor fixed on the device base. The output shaft of the driving motor is fixedly connected with a rotating plate. A limiting sunk groove is formed on one side of the rotating plate. A slider is slidably installed in the limiting sunk groove. A conductive screw rod threadedly connected with the slider is rotatably installed on the rotating plate. One end of the conductive screw rod is fixedly installed with a bevel gear. A transmission column with an integral structure is arranged on one side of the slider. The present invention can generate waves synchronously in three directions, and by adjusting the frequency and amplitude of the operation of the wave-making component, the wave-making effect can be adjusted more efficiently. Moreover, its wave-making frequency can be adaptively adjusted according to the actual amplitude to ensure the simulation of the sea wave effect.

Description

Technical Field

[0001] The present invention relates to the technical field of water tunnel cavitation experiments, and particularly to a water tunnel cavitation experiment device. Background Art

[0002] In the water tunnel cavitation experiment of a hull, simulating wave disturbances in a complex marine environment is an important link for verifying the hydrodynamic characteristics and cavitation effects of the hull. In the prior art, the adjustment method of the wave-making simulation device mainly relies on pump speed control or mechanical cam link drive, but there are still significant technical limitations in practical applications, which are specifically manifested as follows:

[0003] Currently, the mainstream wave-making experiment devices mostly adopt the pump drive mode, and generate waves by adjusting the pump speed and start-stop frequency. However, such methods can only generate waves in a fixed direction (such as one-way or two-way symmetry), and it is difficult to simulate the multi-angle wave environment in the real ocean, resulting in a deviation between the hydrodynamic conditions of the cavitation effect experiment and the actual combat scenario. In addition, the flow rate adjustment of the pump drive is limited by discrete gear control, and continuous linear adjustment of wave parameters cannot be achieved. For example, when it is necessary to accurately capture the critical state of cavitation inception, the discrete gear switching will lead to a decrease in the accuracy of experimental data, making it difficult to meet the requirements of high-resolution experiments.

[0004] To address the deficiencies of pump adjustment, some technologies adopt a cam link mechanism to drive the wave-making plate to generate waves. Such methods can adjust the wave frequency by changing the cam speed, but due to the mechanical structure characteristics, the adjustment of the single-wave-making amplitude (i.e., wave height) requires reconfiguring the cam profile or link stroke after stopping the machine, and the amplitude parameter cannot be dynamically adjusted during the experiment. For example, when it is necessary to simulate scenarios of gradual or sudden change in wave amplitude, the existing cam link system needs to interrupt the experiment for mechanical adjustment, which is not only inefficient but also may reduce the credibility of data due to inconsistent experimental conditions.

[0005] In summary, the existing wave-making experiment devices have significant deficiencies in terms of direction diversity, parameter continuity, and dynamic adjustment ability, which restrict the simulation accuracy of the water tunnel cavitation experiment for complex working conditions. To address the above problems, the present application proposes a water tunnel cavitation experiment device to meet the current refined experimental requirements. Summary of the Invention

[0006] The purpose of the present invention is to provide a water tunnel cavitation experiment device to solve the problems raised in the above background art.

[0007] The technical solution of the present invention is: a water tunnel cavitation experiment device, including a device base and an experimental box body. Two vertically arranged and one horizontally arranged wave-making push plates are arranged in the experimental box body, and a driving component and a wave-making component are further included;

[0008] The driving component includes a driving motor fixed on the device base. The output shaft of the driving motor is fixedly connected with a rotating plate. A limiting sunk groove is formed on one side of the rotating plate. A slider is slidably installed in the limiting sunk groove. A conductive screw rod threadedly connected with the slider is rotatably installed on the rotating plate. One end of the conductive screw rod is fixedly installed with a bevel gear. A transmission column of an integral structure is arranged on one side of the slider. A variable resistance unit is arranged on one side of the driving motor;

[0009] The wave-making component includes a pair of C-shaped transmission rods and a transmission vertical plate. The two C-shaped transmission rods are slidably connected with two adjacent side walls of the experimental box body in the horizontal direction. The transmission vertical plate is slidably connected with the bottom of the experimental box body in the vertical direction. An oblong groove for active cooperation with the transmission column is formed at the bottom of the transmission vertical plate. Push-pull transmission rods are rotatably installed between the transmission vertical plate and the two C-shaped transmission rods through movable shafts;

[0010] A bevel gear ring coaxially arranged with the rotating plate is arranged on one side of the driving motor, and the bevel gear ring is adapted to the bevel gear.

[0011] Preferably, the variable resistance unit includes a pair of first supporting feet fixed on the device base. A first conductive ring is fixedly connected to the two first supporting feet together. The first conductive ring is electrically connected with an input wire. The inner wall of the first conductive ring is in contact with the end of the conductive screw rod.

[0012] Preferably, two second supporting feet are fixed at a position of the device base close to the rotating plate. A power connection ring is fixedly connected to the two second supporting feet together. A second conductive ring is rotatably installed inside the power connection ring. A spiral resistance coil is fixedly connected to the inner side wall of the second conductive ring. A plurality of connecting columns are fixedly connected between one side of the spiral resistance coil and the rotating plate. The bottom end of the power connection ring is electrically connected with an output wire.

[0013] Preferably, a conductive ring rod is fixedly connected to the transmission column. A flexible conductive clip is fixedly connected to one end of the conductive ring rod. The end of the flexible conductive clip is in contact with the spiral resistance coil. A corrugated film is fixedly connected between the slider and both ends of the limiting sunk groove.

[0014] Preferably, a pair of horizontally arranged electric telescopic rods are fixed on the surface of the device base close to the driving motor, and the ends of the two electric telescopic rods are fixedly connected with the bevel gear ring.

[0015] Preferably, the two vertically arranged wave-making push plates are fixedly connected with the two C-shaped transmission rods, and the horizontally arranged wave-making push plate is fixedly connected with the transmission vertical plate. Each wave-making push plate internally fixes heating wires arranged in a staggered manner. The output wire is electrically connected with the driving motor and the plurality of heating wires.

[0016] Preferably, the wave-making push plate is provided with through openings distributed at equal intervals, and one side of each through opening is connected by a hinge to a matching movable plate. The cross-sections of the through openings and the movable plates are both trapezoidal structures.

[0017] Preferably, the bottom of the experimental box body and both sides where the C-shaped transmission rod is slidably installed are made of metal materials. The other two sides of the experimental box body are made of transparent tempered glass materials and form an observation surface. And on one side of the device base close to the observation surface, bottom guide rails are fixedly arranged. Multiple high-speed camera assemblies are movably installed on the bottom guide rails. A support outer frame is fixedly installed between the outer wall of the experimental box body and the device base. Two guide frames are fixed at both sides of the bottom end of the experimental box body, and the guide frames are slidably matched with the C-shaped transmission rod.

[0018] Preferably, a pair of water pipes are fixedly communicated with one side of the experimental box body, and the two water pipes are communicated with an external clean water tank through an external water pump.

[0019] Preferably, a pair of top guide rails are fixed on the top of the experimental box body, and matching electric sliders are installed on the two top guide rails. Vertical rods are fixed on the two electric sliders. A plurality of L-shaped notches distributed at equal intervals are formed on each vertical rod. A T-shaped frame is jointly clamped in the corresponding two L-shaped notches. And the bottom end of the T-shaped frame is fixedly connected to a hull model. Lifting hands are fixed at both ends of the T-shaped frame.

[0020] The present invention provides a water tunnel cavitation experiment device through improvement. Compared with the prior art, it has the following improvements and advantages:

[0021] First: The conical tooth ring provided in the present invention is used to mesh with the conical gear. When the two mesh with each other, the rotating plate drives the conductive screw to rotate, and under the action of the fixedly arranged conical tooth ring, the conical gear drives the conductive screw to rotate, thereby driving the slider to move along the limiting sunk groove, and then the distance between the transmission column and the center of the rotating plate can be adjusted, and the wave-making amplitude of the wave-making component can be adjusted more linearly without stopping the machine.

[0022] Second: When it is necessary to increase the wave-making amplitude of the wave-making component in the present invention, at this time, the set slider moves in the direction away from the center of the rotating plate under the rotation of the conductive screw. At this time, the distance between the rotating plate, the slider and the transmission column increases, so that the up-and-down movement distance of the transmission column driving the transmission vertical plate can be increased, and then the movement distance of the C-shaped transmission rod can be synchronously increased; at the same time, the transmission column drives the conductive ring rod and the flexible conductive clip to move towards the periphery of the spiral resistance coil, thereby reducing the resistance in the circuit, increasing the magnitude of the current, and increasing the rotation speed of the driving motor, so as to further improve the wave-making effect by increasing the wave-making frequency; on the contrary, when the wave-making amplitude of the wave-making component decreases, the current in the circuit also decreases synchronously, and the rotation speed of the driving motor is reduced, and the wave-making frequency is reduced to further reduce the wave-making effect;

[0023] Third: The present invention uses an input wire, a conductive ring one, a conductive screw, a slider, a transmission column, a conductive ring rod, a flexible conductive clip, a spiral resistance coil, a conductive ring two, a power connection ring and an output wire to form a circuit, realizing the power-on process for the driving motor and the subsequent heating wire, and adjusting the magnitude of the current to quickly and synchronously adjust the rotation speed of the driving motor and the power of the heating wire. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present invention from the first perspective;

[0026] Figure 2 It is a schematic three-dimensional structure diagram of the whole of the present invention from the second perspective;

[0027] Figure 3 It is a schematic three-dimensional structure diagram of the whole of the present invention from the third perspective;

[0028] Figure 4 It is a schematic internal structure diagram of the experimental box of the present invention;

[0029] Figure 5 It is a schematic sectional structure diagram of the experimental box of the present invention;

[0030] Figure 6 It is a schematic three-dimensional structure diagram of the top guide rail and the T-shaped frame of the present invention;

[0031] Figure 7 It is a schematic diagram of the state change when the wave-making push plate of the present invention is moving;

[0032] Figure 8 Schematic diagram of the three-dimensional structure of the first perspective of the driving component of the present invention;

[0033] Figure 9 Schematic diagram of the three-dimensional structure of the transmission vertical plate and the push-pull transmission rod of the present invention;

[0034] Figure 10 Schematic diagram of the three-dimensional structure of the second perspective of the driving component of the present invention;

[0035] Figure 11 Explosion structure diagram of the driving component of the present invention;

[0036] Figure 12 Schematic diagram of the partial sectional structure of the rotating plate of the present invention;

[0037] Figure 13 For the present invention Figure 12 Enlarged structure diagram at position A in

[0038] Reference numerals:

[0039] 1. Experimental box body; 2. Wave-making push plate; 201. Through port; 202. Movable plate; 203. Heating wire; 3. Device base; 4. Support outer frame; 5. Driving motor; 501. Rotating plate; 502. Conductive screw rod; 503. Bevel gear; 504. Slide block; 505. Transmission column; 506. Conductive ring rod; 507. Flexible conductive clip; 508. Limit sink; 509. Corrugated film; 510. Spiral resistance coil; 511. Connecting column; 512. Conductive ring two; 513. Power connection ring; 514. Output wire; 515. Input wire; 516. Conductive ring one; 6. Bottom guide rail; 7. Top guide rail; 701. Electric slide block; 702. Vertical rod; 703. L-shaped notch; 704. T-shaped frame; 705. Lifting hand; 706. Hull model; 8. Electric telescopic rod; 801. Bevel gear ring; 9. C-shaped transmission rod; 901. Guide frame; 10. Transmission vertical plate; 11. Oval slot; 12. Push-pull transmission rod; 13. High-speed camera assembly; 14. Water pipe. Detailed implementation manners

[0040] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] The present invention provides a cavitation experiment device for a water tunnel by improvement. The technical solution of the present invention is as follows:

[0042] AsFigures 1 to 13 As shown in the figure, an embodiment of the present invention provides a water tunnel cavitation experiment device, which includes a device base 3 and an experimental box body 1. Two vertically arranged and one horizontally arranged wave-making push plates 2 are arranged in the experimental box body 1, and a driving component and a wave-making component are further included;

[0043] The driving component includes a driving motor 5 fixed on the device base 3. The driving motor 5 specifically adopts a DC motor. The output shaft of the driving motor 5 is fixedly connected with a rotating plate 501. A limiting sink 508 is opened on one side of the rotating plate 501. A slider 504 is slidably installed in the limiting sink 508. A conductive screw rod 502 threadedly connected with the slider 504 is rotatably installed on the rotating plate 501. One end of the conductive screw rod 502 is fixedly installed with a bevel gear 503. A transmission column 505 with an integral structure is arranged on one side of the slider 504. A variable resistance unit is arranged on one side of the driving motor 5; the arranged variable resistance unit is used to adapt to the amplitude of the wave-making component. When the amplitude of the wave-making increases, the resistance can be adaptively reduced, and by increasing the current, the rotation speed of the driving motor 5 and the heating effect of the subsequent heating wire 203 can be improved to experiment on the influence of temperature change on the water tunnel cavitation effect of the hull model 706.

[0044] The wave-making component includes a pair of C-shaped transmission rods 9 and a transmission vertical plate 10. The two C-shaped transmission rods 9 are slidably connected with two adjacent side walls of the experimental box body 1 in the horizontal direction. The transmission vertical plate 10 is slidably connected with the bottom of the experimental box body 1 in the vertical direction. An oval slot 11 for movably cooperating with the transmission column 505 is opened at the bottom of the transmission vertical plate 10. Push-pull transmission rods 12 are rotatably installed between the transmission vertical plate 10 and the two C-shaped transmission rods 9 through movable shafts; through the above structure, the arranged transmission vertical plate 10 and the two C-shaped transmission rods 9 are used to drive the subsequent wave-making push plates 2, and by using their reciprocating motion, wave-making can be realized simultaneously in the X-axis direction, Y-axis direction, and Z-axis direction to simulate the complex navigation environment of the hull on the ocean; specifically, when the driving motor 5 operates, the transmission vertical plate 10 moves up and down under the combined action of the transmission column 505 and the oval slot 11, and the two C-shaped transmission rods 9 are driven by the push-pull transmission rods 12 to perform reciprocating motion synchronously, thereby realizing synchronous wave-making processing in three directions.

[0045] A bevel gear ring 801 coaxially arranged with the rotating plate 501 is arranged on one side of the driving motor 5, and the bevel gear ring 801 is adapted to the bevel gear 503; the arranged bevel gear ring 801 is used to mesh with the bevel gear 503. When the two are meshed with each other, the rotating plate 501 drives the conductive screw rod 502 to rotate, and the bevel gear 503 drives the conductive screw rod 502 to rotate under the action of the fixedly arranged bevel gear ring 801, so as to drive the slider 504 to move along the limiting sink 508, and further the distance between the transmission column 505 and the center of the rotating plate 501 can be adjusted, and the wave-making amplitude of the wave-making component can be adjusted more linearly without stopping the machine.

[0046] As a further solution of the present invention, as Figure 5 , Figure 8 , Figures 9 - 13 shown, the variable resistance unit includes a pair of first support legs fixed to the device base 3. A first conductive ring 516 is fixedly connected to the two first support legs together. The first conductive ring 516 is electrically connected to an input wire 515. The inner wall of the first conductive ring 516 is in contact with the end of the conductive screw 502.

[0047] Furthermore, two second support legs are fixed at a position of the device base 3 close to the rotating plate 501. A power receiving ring 513 is fixedly connected to the two second support legs together. A second conductive ring 512 is rotatably installed inside the power receiving ring 513. A spiral resistance coil 510 is fixedly connected to the inner side wall of the second conductive ring 512. A plurality of connecting columns 511 are fixedly connected between one side of the spiral resistance coil 510 and the rotating plate 501. The bottom end of the power receiving ring 513 is electrically connected to an output wire 514.

[0048] Furthermore, a conductive ring rod 506 is fixedly connected to the transmission column 505. One end of the conductive ring rod 506 is fixedly connected to a flexible conductive clip 507. The end of the flexible conductive clip 507 is in contact with the spiral resistance coil 510. A corrugated film 509 is fixedly connected between the slider 504 and both ends of the limit sunk groove 508; the provided corrugated film 509 is beneficial to covering the limit sunk groove 508 and protecting the internal conductive screw 502.

[0049] Through the above structure, a circuit is formed by using the input wire 515, the first conductive ring 516, the conductive screw 502, the slider 504, the transmission column 505, the conductive ring rod 506, the flexible conductive clip 507, the spiral resistance coil 510, the second conductive ring 512, the power receiving ring 513 and the output wire 514 to realize the power-on process of the drive motor 5 and the subsequent heating wire 203, and by adjusting the current magnitude, the rotation speed of the drive motor 5 and the power of the heating wire 203 can be quickly and synchronously adjusted; by adjusting the power of the heating wire 203, the wave-making effect can be improved synchronously while increasing the temperature of the water liquid to detect the influence on the cavitation effect of the ship's water tunnel in this case;

[0050] Specifically, when it is necessary to increase the wave-making amplitude of the wave-making component, at this time, the set slider 504 moves away from the center of the rotating plate 501 under the rotation of the conductive screw 502. At this time, the distances between the rotating plate 501, the slider 504, and the transmission column 505 increase, so that the up-and-down movement distance of the transmission column 505 driving the transmission vertical plate 10 can be increased, and then the movement distance of the C-shaped transmission rod 9 can be synchronously increased. At the same time, the transmission column 505 drives the conductive ring rod 506 and the flexible conductive clip 507 to move towards the periphery of the spiral resistance coil 510, thereby reducing the resistance in the circuit, increasing the magnitude of the current, and increasing the rotation speed of the drive motor 5. By increasing the wave-making frequency, the wave-making effect can be further improved.

[0051] On the contrary, when the wave-making amplitude of the wave-making component decreases, the current in the circuit also decreases synchronously, and the rotation speed of the drive motor 5 is reduced, and the wave-making frequency is reduced to further reduce the wave-making effect.

[0052] As a further solution of the present invention, as Figure 5 and Figure 10 shown, a pair of horizontally arranged electric telescopic rods 8 are fixed at a position on the surface of the device base 3 close to the drive motor 5, and the ends of the two electric telescopic rods 8 are fixedly connected to the conical tooth ring 801. By using the provided electric telescopic rods 8, it is convenient to control and adjust the position of the conical tooth ring 801. When the conical tooth ring 801 is in contact with the conical gear 503, the conical gear 503 can rotate, thereby driving the conductive screw 502 to rotate. At the same time, in order to avoid rigid collision between the conical tooth ring 801 and the conical gear 503 resulting in structural damage, in this application, the conical tooth ring 801 and the conical gear 503 can be made of rubber material, which has sufficient friction and can avoid rigid collision.

[0053] Further, the two vertically arranged wave-making push plates 2 are fixedly connected to the two C-shaped transmission rods 9, the horizontally arranged wave-making push plate 2 is fixedly connected to the transmission vertical plate 10, and staggered heating wires 203 are fixed inside each wave-making push plate 2. The output wire 514 is electrically connected to the drive motor 5 and the multiple heating wires 203.

[0054] Further, as Figure 7 shown, the wave-making push plate 2 is provided with equally spaced through openings 201, and a matching movable plate 202 is hinged to one side of each through opening 201. The cross-sections of the through openings 201 and the movable plates 202 are both trapezoidal structures. When the wave-making push plate 2 makes waves, as shown in the left schematic diagram in Figure 7 , its movable plate 202 fits with the through opening 201 under the action of water flow. At this time, the pushing area of the wave-making push plate 2 can be increased to ensure the wave-making effect. When the wave-making push plate 2 is reset, as shown in Figure 7As shown in the right schematic diagram in [reference], at this time, under the action of water flow, the movable plate 202 will be partially separated from the through-port 201. At this time, part of the water flow can flow through the through-port 201, thereby effectively reducing the resistance when the wave-making push plate 2 returns to its original position.

[0055] Furthermore, the bottom of the experimental box body 1 and both sides where the C-shaped transmission rod 9 is slidably installed are made of metal materials. The other two sides of the experimental box body 1 are made of transparent tempered glass materials and form an observation surface. And on one side of the device base 3 close to the observation surface, bottom guide rails 6 are fixedly arranged. Multiple high-speed camera assemblies 13 are movably installed on the bottom guide rails 6. A support outer frame 4 is fixedly installed between the outer wall of the experimental box body 1 and the device base 3. In order to make the movement of the C-shaped transmission rod 9 more stable, two guide frames 901 are fixed at both ends of the bottom of the experimental box body 1, and the guide frames 901 are slidably matched with the C-shaped transmission rod 9; through the above structure, the provided high-speed camera assemblies 13 are used to take high-speed pictures of the cavitation phenomenon of the hull model in water.

[0056] Furthermore, as Figures 1 - 2 shown, a pair of water pipes 14 are fixedly connected to one side of the experimental box body 1, and the two water pipes 14 are connected to an external clean water tank through an external water pump; by using the above structure, the liquid in the experimental box body 1 can be passed into the external clean water tank through the two water pipes 14 and the external water pump for filtration treatment to ensure the transparency of the test liquid and avoid the influence of impurities in the liquid on the test.

[0057] As a further solution of the present invention, as Figure 1 、 Figure 2 and Figure 6 shown, a pair of top guide rails 7 are fixed on the top of the experimental box body 1, and electric sliders 701 adapted to each other are installed on the two top guide rails 7. Vertical rods 702 are fixed on the two electric sliders 701. A plurality of equidistantly distributed L-shaped notches 703 are formed on each vertical rod 702. A T-shaped frame 704 is jointly clamped in the corresponding two L-shaped notches 703, and the bottom end of the T-shaped frame 704 is fixedly connected to a hull model 706. Lifting hands 705 are fixed at both ends of the T-shaped frame 704; through the above structure, the position of the hull model 706 relative to the inside of the experimental box body 1 can be adjusted. Specifically, by moving the electric slider 701, the horizontal position of the hull model 706 can be adjusted; and by placing the T-shaped frame 704 in different L-shaped notches 703, the height of the hull model 706 can be adjusted.

[0058] Working principle: When in use, as Figures 1 - 3 shown, the hull model 706 is arranged on the experimental box body 1. By moving the electric slider 701, the horizontal position of the hull model 706 can be adjusted; and by placing the T-shaped frame 704 in different L-shaped notches 703, the height of the hull model 706 can be adjusted.

[0059] When specifically conducting cavitation experiments, the driving vertical plate 10 and two C-shaped driving rods 9 are set to drive the subsequent wave-making push plate 2. By using their reciprocating motion, wave-making is achieved simultaneously in the X-axis direction, Y-axis direction, and Z-axis direction to simulate the complex navigation environment of a ship on the ocean. Specifically, when the driving motor 5 operates, the driving vertical plate 10 moves up and down under the combined action of the driving column 505 and the oval slot 11, and uses the push-pull driving rod 12 to drive the two C-shaped driving rods 9 to reciprocate synchronously, thereby realizing synchronous wave-making processing in three directions. When the wave-making push plate 2 makes waves, as shown in the left schematic diagram in Figure 7 , its movable plate 202 fits with the through port 201 under the action of water flow. At this time, the pushing area of the wave-making push plate 2 can be increased to ensure the wave-making effect. When the wave-making push plate 2 resets, as shown in the right schematic diagram in Figure 7 , at this time, also under the action of water flow, the set movable plate 202 will be partially separated from the through port 201. At this time, part of the water flow can flow through the through port 201, thereby effectively reducing the resistance when the wave-making push plate 2 resets;

[0060] The electric telescopic rod 8 is used to facilitate the control and adjustment of the position of the conical gear ring 801. When the conical gear ring 801 fits with the conical gear 503, the conical gear 503 can rotate, thereby driving the conductive screw rod 502 to rotate;

[0061] When it is necessary to increase the wave-making amplitude of the wave-making assembly, at this time, the set slider 504 moves away from the center of the rotating plate 501 under the rotation of the conductive screw rod 502. At this time, the distances between the rotating plate 501, the slider 504, and the driving column 505 increase, so that the up and down movement distance of the driving column 505 driving the driving vertical plate 10 can be increased, and thus the movement distance of the C-shaped driving rod 9 can be synchronously increased. At the same time, the driving column 505 drives the conductive ring rod 506 and the flexible conductive clip 507 to move towards the periphery of the spiral resistance coil 510, thereby reducing the resistance in the circuit, increasing the magnitude of the current, and increasing the rotation speed of the driving motor 5. By increasing the wave-making frequency, the wave-making effect is further improved;

[0062] On the contrary, when the wave-making amplitude of the wave-making assembly decreases, the driving motor 5 can be controlled to rotate in the reverse direction. Under the action of the conical gear ring 801 and the conical gear 503, the conductive screw rod 502 rotates in the reverse direction, so that the slider 504 and the driving column 505 move towards the center of the rotating plate 501. At this time, the resistance in the circuit increases, the current in the circuit also decreases synchronously, and the rotation speed of the driving motor 5 is reduced, reducing the wave-making frequency to further reduce the wave-making effect;

[0063] During the specific experimental process, the hull model 706 is photographed by multiple sets of high-speed camera components 13 set, so as to facilitate the subsequent analysis of its hydrodynamic characteristics and cavitation effect.

[0064] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water tunnel cavitation experiment device, comprising a device base (3) and an experimental box body (1), characterized in that, There are two vertically arranged and one horizontally arranged wave-making push plates (2) inside the experimental box body (1), and it also includes a driving component and a wave-making component; The driving component includes a driving motor (5) fixed on the device base (3). The output shaft of the driving motor (5) is fixedly connected with a rotating plate (501). A limiting sunk groove (508) is formed on one side of the rotating plate (501). A slider (504) is slidably installed in the limiting sunk groove (508). A conductive screw rod (502) threadedly connected with the slider (504) is rotatably installed on the rotating plate (501). One end of the conductive screw rod (502) is fixedly installed with a bevel gear (503). A transmission column (505) with an integral structure is arranged on one side of the slider (504). A variable resistance unit is arranged on one side of the driving motor (5); The wave-making component includes a pair of C-shaped transmission rods (9) and a transmission vertical plate (10). The two C-shaped transmission rods (9) are slidably connected with two adjacent side walls of the experimental box body (1) in the horizontal direction. The transmission vertical plate (10) is slidably connected with the bottom of the experimental box body (1) in the vertical direction. A long circular groove (11) for movably cooperating with the transmission column (505) is formed at the bottom of the transmission vertical plate (10). Push-pull transmission rods (12) are rotatably installed between the transmission vertical plate (10) and the two C-shaped transmission rods (9) through movable shafts; A bevel gear ring (801) coaxially arranged with the rotating plate (501) is arranged on one side of the driving motor (5), and the bevel gear ring (801) is adapted to the bevel gear (503).

2. The cavitation experiment device for a water tunnel according to claim 1, characterized in that: The variable resistance unit includes a pair of first support feet fixed on the device base (3). A first conductive ring (516) is fixedly connected to the two first support feet together. The first conductive ring (516) is electrically connected with an input wire (515). The inner wall of the first conductive ring (516) is in contact with the end of the conductive screw rod (502).

3. The cavitation experiment device for a water tunnel according to claim 2, characterized in that: Two second support feet are fixed at a position of the device base (3) close to the rotating plate (501). A power connection ring (513) is fixedly connected to the two second support feet together. A second conductive ring (512) is rotatably installed inside the power connection ring (513). A spiral resistance coil (510) is fixedly connected to the inner side wall of the second conductive ring (512). A plurality of connecting columns (511) are fixedly connected between one side of the spiral resistance coil (510) and the rotating plate (501). The bottom end of the power connection ring (513) is electrically connected with an output wire (514).

4. The cavitation experiment device for a water tunnel according to claim 3, characterized in that: A conductive ring rod (506) is fixedly connected to the transmission column (505). One end of the conductive ring rod (506) is fixedly connected with a flexible conductive clip (507). The end of the flexible conductive clip (507) is in contact with the spiral resistance coil (510). A corrugated film (509) is fixedly connected between the slider (504) and the two ends of the limiting sunk groove (508).

5. The cavitation experiment device in a water tunnel according to claim 1, characterized in that: A pair of horizontally arranged electric telescopic rods (8) are fixed on the surface of the device base (3) close to the driving motor (5), and the ends of the two electric telescopic rods (8) are fixedly connected with the bevel gear ring (801).

6. The cavitation experimental device for a water tunnel according to claim 3, characterized in that: The two vertically arranged wave-making push plates (2) are fixedly connected to two C-shaped transmission rods (9), the horizontally arranged wave-making push plate (2) is fixedly connected to a transmission vertical plate (10), and staggered heating wires (203) are fixedly installed inside each wave-making push plate (2). The output wire (514) is electrically connected to the drive motor (5) and a plurality of heating wires (203).

7. The cavitation experiment device in a water tunnel according to claim 6, characterized in that: The wave-making push plate (2) is provided with equally spaced openings (201), and a movable plate (202) adapted thereto is connected to one side of each opening (201) by a hinge. The cross-sections of the opening (201) and the movable plate (202) are both trapezoidal structures.

8. The cavitation experiment device in a water tunnel according to claim 1, wherein: The bottom of the experimental box body (1) and both sides where the C-shaped transmission rod (9) is slidably installed are made of metal materials. The other two sides of the experimental box body (1) are made of transparent tempered glass and form an observation surface. Bottom guide rails (6) are fixedly arranged on one side of the device base (3) close to the observation surface. A plurality of high-speed camera assemblies (13) are movably installed on the bottom guide rails (6). A support outer frame (4) is fixedly installed between the outer wall of the experimental box body (1) and the device base (3). Two guide frames (901) are fixed at both ends of the bottom of the experimental box body (1), and the guide frames (901) are slidably matched with the C-shaped transmission rod (9).

9. The cavitation experiment device for a water tunnel according to claim 1, characterized in that: One side of the experimental box body (1) is fixedly communicated with a pair of water pipes (14), and the two water pipes (14) are connected to an external clean water tank through an external water pump.

10. The cavitation experiment device in a water tunnel according to claim 1, characterized in that: A pair of top guide rails (7) are fixed to the top of the experimental box body (1), and electric sliders (701) adapted thereto are installed on both of the top guide rails (7). Vertical rods (702) are fixed to both of the electric sliders (701). A plurality of equally spaced L-shaped notches (703) are formed in each vertical rod (702). A T-shaped frame (704) is jointly clamped in the corresponding two L-shaped notches (703). The bottom end of the T-shaped frame (704) is fixedly connected to a hull model (706). Lifting hands (705) are fixed to both ends of the T-shaped frame (704).

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