Water tunnel cavitation experiment device

Abstract

The invention discloses a water tunnel cavitation experiment device, and relates to the technical field of water tunnel cavitation experiments, the water tunnel cavitation experiment device comprises a device base and an experiment box body, the experiment box body is internally provided with two vertically arranged wave-making push plates and a horizontally arranged wave-making push plate, and the water tunnel cavitation experiment device also comprises a driving assembly and a wave-making assembly; the driving assembly comprises a driving motor fixed to the device base, an output shaft of the driving motor is fixedly connected with a rotating plate, a limiting sinking groove is formed in one side of the rotating plate, a sliding block is slidably installed in the limiting sinking groove, and a conductive screw in threaded connection with the sliding block is rotatably installed on the rotating plate. A bevel gear is fixedly mounted at one end of the conductive screw rod, and a transmission column of an integrated structure is arranged on one side of the sliding block; according to the device, synchronous wave making can be carried out in three directions, the wave making effect can be adjusted more efficiently by adjusting the operation frequency and amplitude of the wave making assembly, and the wave making frequency and the actual amplitude can be adjusted in a self-adaptive mode, so that the sea wave simulating effect is ensured.

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 ship hull, simulating the wave disturbance in a complex marine environment is an important link to verify the hydrodynamic characteristics and cavitation effect of the ship hull. In the prior art, the adjustment method of the wave-making simulation device mainly relies on the control of the water pump speed or the drive of a mechanical cam link, but there are still significant technical limitations in practical applications, which are specifically manifested as follows: The current mainstream wave-making experiment devices mostly adopt the water pump drive mode, and generate waves by adjusting the water pump speed and start-stop frequency. However, such methods can only generate waves in a fixed direction (such as unidirectional or bidirectional 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 water pump drive is limited by the discrete gear control, and the continuous linear adjustment of the wave parameters cannot be realized. 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.

[0003] In view of the deficiencies of the water 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 the 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 the scenario of gradual or sudden change of 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 the data due to the discontinuous experimental conditions.

[0004] 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. In view of the above problems, the present application proposes a water tunnel cavitation experiment device to meet the current refined experimental requirements. Summary of the Invention

[0005] 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.

[0006] 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; The driving assembly includes a driving motor fixed to 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; The wave-making assembly 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. A long circular groove for movably cooperating 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; 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.

[0007] Preferably, the variable resistance unit includes a pair of support feet one fixed to the device base. A conductive ring one is fixedly connected to the two support feet one together. The conductive ring one is electrically connected with an input wire. The inner wall of the conductive ring one is in contact with the end of the conductive screw rod.

[0008] Preferably, two support feet two are fixed at a position of the device base close to the rotating plate. A power connection ring is fixedly connected to the two support feet two together. A conductive ring two is rotatably installed inside the power connection ring. A spiral resistance coil is fixedly connected to the inner side wall of the conductive ring two. 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.

[0009] Preferably, a conductive ring rod is fixedly connected to the transmission column. One end of the conductive ring rod is fixedly connected with a flexible conductive clip. 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.

[0010] Preferably, a pair of horizontally arranged electric telescopic rods are fixed at a position on the surface of the device base close to the driving motor. The ends of the two electric telescopic rods are fixedly connected with the bevel gear ring.

[0011] Preferably, the two vertically arranged wave-making push plates are fixedly connected with the two C-shaped transmission rods. 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.

[0012] Preferably, the wave-making push plate is provided with through openings distributed at equal intervals, and a movable plate adapted thereto is connected to one side of each through opening by a hinge. The cross-sections of the through openings and the movable plates are both trapezoidal structures.

[0013] 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. Bottom guide rails are fixedly arranged on one side of the device base close to the observation surface. A plurality of 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 to both sides of the bottom end of the experimental box body, and the guide frames are slidably matched with the C-shaped transmission rod.

[0014] 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.

[0015] Preferably, a pair of top guide rails are fixed to the top of the experimental box body, and electric sliders adapted thereto are installed on the two top guide rails. Vertical rods are fixed to 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. The bottom end of the T-shaped frame is fixedly connected to a hull model. Lifting hands are fixed to both ends of the T-shaped frame.

[0016] The present invention provides a water tunnel cavitation experiment device through improvement. Compared with the prior art, it has the following improvements and advantages: First: The conical gear 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 rod to rotate, and the conical gear drives the conductive screw rod to rotate under the action of the fixedly arranged conical gear ring, so as to drive the slider to move along the limiting sunk groove, and further adjust the distance between the transmission column and the center of the rotating plate, and more linearly adjust the wave-making amplitude of the wave-making component without stopping the machine. 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 a direction away from the center of the rotating plate under the rotation of the conductive screw rod. At this time, the distance between the rotating plate, the slider and the transmission column increases, so as to increase the up and down moving distance of the transmission column driving the transmission vertical plate, and further synchronously increase the moving distance of the C-shaped transmission rod; 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; conversely, 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, reducing the wave-making frequency, so as to further reduce the wave-making effect. Thirdly: The present invention uses an input wire, a first conductive ring, a conductive screw, a slider, a transmission column, a conductive ring rod, a flexible conductive clip, a spiral resistance coil, a second conductive ring, a power connection ring, and an output wire to form a circuit, realizing the power-on process for the drive motor and the subsequent heating wire, and adjusting the current magnitude to quickly and synchronously adjust the rotational speed of the drive motor and the power of the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic perspective view of the overall first perspective of the present invention; Figure 2 is a schematic perspective view of the overall second perspective of the present invention; Figure 3 is a schematic perspective view of the overall third perspective of the present invention; Figure 4 is a schematic diagram of the internal structure of the experimental box of the present invention; Figure 5 is a schematic diagram of the sectional structure of the experimental box of the present invention; Figure 6 is a schematic perspective view of the top guide rail and the T-shaped frame of the present invention; Figure 7 is a schematic diagram of the state change when the wave-making push plate of the present invention is moving; Figure 8 is a schematic perspective view of the first perspective of the drive assembly of the present invention; Figure 9 is a schematic perspective view of the transmission vertical plate and the push-pull transmission rod of the present invention; Figure 10 is a schematic perspective view of the second perspective of the drive assembly of the present invention; Figure 11 is an exploded schematic view of the drive assembly of the present invention; Figure 12 is a schematic diagram of the partial sectional structure of the rotating plate of the present invention; Figure 13 of the present invention Figure 12 is an enlarged schematic view of the structure at A in

[0019] Reference numerals: 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. Limiting sunk groove; 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 manner

[0020] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0021] The present invention provides a water tunnel cavitation experiment device through improvement. The technical solution of the present invention is as follows: As Figures 1 to 13 shown, the embodiment of the present invention provides a water tunnel cavitation experiment device, including 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; 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 sunk groove 508 is opened on one side of the rotating plate 501. A slide block 504 is slidably installed in the limiting sunk groove 508. A conductive screw rod 502 threadedly connected with the slide block 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 slide block 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 the current is increased to improve the rotation speed of the driving motor 5 and the heating effect of the subsequent heating wire 203, so as to experiment on the influence of temperature change on the water tunnel cavitation effect of the hull model 706.

[0022] The wave-making assembly includes a pair of C-shaped drive rods 9 and a drive vertical plate 10. The two C-shaped drive rods 9 are slidably connected to two adjacent side walls of the experimental box 1 in the horizontal direction, and the drive vertical plate 10 is slidably connected to the bottom of the experimental box 1 in the vertical direction. A long circular groove 11 for movably cooperating with the drive column 505 is formed at the bottom of the drive vertical plate 10. Push-pull drive rods 12 are rotatably installed between the drive vertical plate 10 and the two C-shaped drive rods 9 through movable shafts; through the above structure, the provided drive vertical plate 10 and the two C-shaped drive rods 9 are used to drive the subsequent wave-making push plate 2, and by using their reciprocating motion, wave-making is realized 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 drive motor 5 operates, the drive vertical plate 10 moves up and down under the combined action of the drive column 505 and the long circular groove 11, and the two C-shaped drive rods 9 are synchronously reciprocated by using the push-pull drive rods 12, thereby realizing synchronous wave-making processing in three directions.

[0023] On one side of the drive motor 5, a conical tooth ring 801 coaxially arranged with the rotating plate 501 is provided, and the conical tooth ring 801 is adapted to the conical gear 503; the provided conical tooth ring 801 is used to mesh with the conical gear 503. When the two are meshed with each other, the rotating plate 501 drives the conductive screw rod 502 to rotate, and the conical gear 503 drives the conductive screw rod 502 to rotate under the action of the fixedly arranged conical tooth ring 801, so as to drive the slider 504 to move along the limit sunk groove 508, and further adjust the distance between the drive column 505 and the center of the rotating plate 501, and adjust the wave-making amplitude of the wave-making assembly more linearly without stopping the machine.

[0024] 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 feet fixed to 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 to an input wire 515, and the inner wall of the first conductive ring 516 is in contact with the end of the conductive screw rod 502.

[0025] Furthermore, two second support feet 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 feet together. A second conductive ring 512 is rotatably installed inside the power receiving ring 513, and 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.

[0026] Further, a conductive ring rod 506 is fixedly connected to the transmission column 505, and a flexible conductive clip 507 is fixedly connected to one end of the conductive ring rod 506. 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 two ends of the slider 504 and 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 rod 502.

[0027] Through the above structure, a circuit is formed by the input wire 515, the first conductive ring 516, the conductive screw rod 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 connection ring 513 and the output wire 514 to realize the electrification 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 under this condition; Specifically, when it is necessary to increase the wave-making amplitude of the wave-making assembly, at this time, the provided slider 504 moves in the direction away from the center of the rotating plate 501 under the rotation of the conductive screw rod 502. At this time, the distance between the rotating plate 501, the slider 504 and the transmission column 505 increases, 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 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 assembly 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.

[0028] As a further solution of the present invention, as Figure 5 and Figure 10As shown in the figure, 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 and cause 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.

[0029] Furthermore, 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 fixedly installed inside each wave-making push plate 2. The output wire 514 is electrically connected to the drive motor 5 and multiple heating wires 203.

[0030] Furthermore, as Figure 7 shown, the wave-making push plate 2 is provided with equally spaced through holes 201, and a movable plate 202 adapted thereto is connected to one side of each through hole 201 by a hinge. The cross-sections of the through hole 201 and the movable plate 202 are both trapezoidal structures; when the wave-making push plate 2 makes waves, as Figure 7 shown in the left schematic diagram in the figure, its movable plate 202 fits with the through hole 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 Figure 7 shown in the right schematic diagram in the figure, at this time, also under the action of water flow, the provided movable plate 202 will be partially separated from the through hole 201. At this time, part of the water flow can flow through the through hole 201, thereby effectively reducing the resistance when the wave-making push plate 2 is reset.

[0031] 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 material, the other two sides of the experimental box body 1 are made of transparent tempered glass material and form an observation surface, and bottom guide rails 6 are fixedly arranged on one side of the device base 3 close to the observation surface. 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 for high-speed shooting of the cavitation phenomenon of the hull model in water.

[0032] Furthermore, as Figures 1 - 2As shown in the figure, 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; with the above structure, the liquid in the experimental box body 1 can be passed into the external clean water tank through the cooperation of the two water pipes 14 and the external water pump for filtration treatment to ensure the permeability of the test liquid and avoid the influence of impurities in the liquid on the test.

[0033] As a further solution of the present invention, as Figure 1 , Figure 2 and Figure 6 shown in the figure, 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 L-shaped notches 703 are equidistantly distributed 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.

[0034] Working principle: When in use, as Figures 1 - 3 shown in the figure, 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; When specifically conducting a cavitation experiment, the arranged transmission vertical plate 10 and the two C-shaped transmission rods 9 are used to drive the subsequent wave-making push plate 2, and by using their reciprocating motion, wave-making is 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 uses the push-pull transmission rod 12 to pull the two C-shaped transmission rods 9 to perform reciprocating motion synchronously, thereby realizing synchronous wave-making treatment in three directions; when the wave-making push plate 2 makes waves, then as Figure 7 shown in the left schematic diagram in the figure, 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; and when the wave-making push plate 2 resets, then as Figure 7 shown in the right schematic diagram in the figure, at this time, also under the action of water flow, the arranged 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; By using the provided electric telescopic rod 8, it is convenient to control and adjust the position of the conical gear ring 801. When the conical gear ring 801 is in contact with the conical gear 503, the conical gear 503 can rotate, thereby driving the conductive screw 502 to rotate; When it is necessary to increase the wave-making amplitude of the wave-making assembly, at this time, the provided 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 thus 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 rotational speed of the drive motor 5, 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 assembly decreases, the drive motor 5 can be controlled to rotate in the reverse direction, and under the action of the conical gear ring 801 and the conical gear 503, the conductive screw 502 rotates in the reverse direction, so that the slider 504 and the transmission 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 rotational speed of the drive motor 5 is reduced, reducing the wave-making frequency, so as to further reduce the wave-making effect; During the specific experiment process, the hull model 706 is photographed by the provided multi-group high-speed camera assemblies 13, so as to facilitate the subsequent analysis of its hydrodynamic characteristics and cavitation effect.

[0035] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious 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 hole cavitation experimental device, comprising a device base (3) and an experimental box (1), characterized in that: The experimental box (1) is provided with two vertically arranged and one horizontally arranged wave-making push plates (2), and also includes a driving component and a wave-making component; The drive assembly comprises a drive motor (5) fixed on a device base (3); an output shaft of the drive motor (5) is fixedly connected to a rotating plate (501); a limiting recess (508) is provided on one side of the rotating plate (501); a slider (504) is slidably mounted in the limiting recess (508); a conductive screw (502) threadedly connected to the slider (504) is rotatably mounted on the rotating plate (501); a bevel gear (503) is fixedly mounted on one end of the conductive screw (502); a transmission column (505) of an integral structure is provided on one side of the slider (504); and a variable resistance unit is provided on one side of the drive motor (5); The wave-making assembly comprises a pair of C-shaped transmission rods (9) and a transmission vertical plate (10), the two C-shaped transmission rods (9) being slidably connected to two adjacent side walls of the experimental box (1) in the horizontal direction, the transmission vertical plate (10) being slidably connected to the bottom of the experimental box (1) in the vertical direction, the bottom of the transmission vertical plate (10) being provided with an elongated circular groove (11) movably engaged with the transmission column (505), and a push-pull transmission rod (12) being rotatably mounted between the transmission vertical plate (10) and the two C-shaped transmission rods (9) via a movable shaft; A conical gear ring (801) is provided on one side of the driving motor (5) and is coaxially arranged with the rotating plate (501), and the conical gear ring (801) is adapted to the conical gear (503).

2. A water hole cavitation experimental device according to claim 1, characterized in that: The variable resistance unit comprises a pair of legs one fixed on a device base (3), a conductive ring one (516) being fixedly connected to the two legs one, the conductive ring one (516) being electrically connected to an input wire (515), and the inner wall of the conductive ring one (516) being in contact with the end of the conductive screw (502).

3. A water hole cavitation experimental device according to claim 2, characterized in that: Two supporting legs (513) are fixedly provided on the device base (3) at a position close to the rotating plate (501), and the two supporting legs (513) are fixedly connected to each other. A conductive ring (512) is rotatably mounted inside the conductive ring (513), and a spiral-shaped resistance ring (510) is fixedly connected to the inner wall of the conductive ring (512). A plurality of connecting columns (511) are fixedly connected between one side of the spiral-shaped resistance ring (510) and the rotating plate (501), and an output wire (514) is electrically connected to the bottom end of the conductive ring (513).

4. A water hole cavitation experimental device according to claim 3, characterized in that: A conductive ring rod (506) is fixedly connected to the transmission column (505), and a flexible conductive clip (507) is fixedly connected to one end of the conductive ring rod (506), an end of the flexible conductive clip (507) is in contact with a volute-shaped resistor coil (510), and a corrugated membrane (509) is fixedly connected between the slider (504) and both ends of the limiting sink groove (508).

5. The water cavity cavitation experimental device according to claim 1, characterized in that: A pair of horizontally arranged electric telescopic rods (8) are fixed at positions close to the drive motor (5) on the surface of the device base (3), and the ends of the two electric telescopic rods (8) are fixedly connected to the conical gear ring (801).

6. A water hole cavitation experimental device 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), and the horizontally arranged wave-making push plates (2) are fixedly connected to the transmission vertical plates (10). Staggered heating wires (203) are fixed inside each of the wave-making push plates (2), and the output wires (514) are electrically connected to the drive motor (5) and the plurality of heating wires (203).

7. A water hole cavitation experimental device according to claim 6, characterized in that: The wave-making push plate (2) is provided with openings (201) distributed at equal distances, and one side of each opening (201) is connected to a corresponding movable plate (202) via a hinge, and the cross-sections of the opening (201) and the movable plate (202) are both trapezoidal structures.

8. The water cavity cavitation experimental device according to claim 1, characterized in that: The bottom of the experimental box (1) and the two sides on which the C-shaped transmission rod (9) is slidably mounted are made of metal material. The other two sides of the experimental box (1) are made of transparent tempered glass and constitute an observation surface. A bottom guide rail (6) is fixedly arranged on one side of the device base (3) close to the observation surface. A plurality of groups of high-speed camera assemblies (13) are movably mounted on the bottom guide rail (6). A supporting frame (4) is fixedly mounted between the outer wall of the experimental box (1) and the device base (3). Two guide frames (901) are fixed on both sides of the bottom end of the experimental box (1), and the guide frames (901) are slidably matched with the C-shaped transmission rod (9).

9. A water hole cavitation experimental device according to claim 1, characterized in that: One side of the experimental box (1) is fixedly connected to a pair of water pipes (14), and the two water pipes (14) are connected to an external clean water tank via an external water pump.

10. The cavitation experiment device for a water tunnel according to claim 1, characterized in that: A pair of top guide rails (7) are fixed on the top of the experimental box (1), and matching electric sliders (701) are installed on the two top guide rails (7), and vertical rods (702) are fixed on the two electric sliders (701), and each of the vertical rods (702) is provided with a plurality of L-shaped slots (703) distributed at equal distances, and a T-shaped frame (704) is commonly clamped in the two corresponding L-shaped slots (703), and the bottom end of the T-shaped frame (704) is fixedly connected to a hull model (706), and lifting handles (705) are fixed at both ends of the T-shaped frame (704).

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