High-speed water tunnel device

Abstract

The present invention relates to a high-speed water tunnel device, belonging to the field of hydrodynamic experiments. The high-speed water tunnel device comprises: a test cylinder body, a test tube, a piston and a rocket thruster. Among them, the length direction of the test cylinder body is vertically arranged, and the test cylinder body is used to accommodate water; the top end of the test tube is connected and communicated with the bottom end of the test cylinder body, and the test tube is used to arrange the article to be tested; the piston slides in the test cylinder body along the length direction of the test cylinder body; the rocket thruster is arranged on the top of the piston, and the rocket thruster is used to push the piston towards the test tube.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrodynamic experiments, and particularly relates to a high-speed water tunnel device. Background Art

[0002] The water tunnel test is mainly carried out in a closed experimental equipment filled with water. By simulating the movement of an object in the water flow, the interaction between the fluid and the object is studied. Its principle is to use water as the working medium, and through a power device, the water circulates in the tunnel to generate a stable water flow velocity field. Then, the test model is placed in the water flow, and relevant physical quantities are observed and measured.

[0003] Currently, the research on the dynamic behavior of submarine topography and underwater structures, especially simulating the behavior characteristics of these research objects under high-speed water flow conditions, has important scientific significance and engineering application value. However, conventional water tunnel experimental devices have problems such as limited water flow velocity and single loading method when simulating high-speed water flow environments, and cannot well meet the experimental requirements under special conditions. Summary of the Invention

[0004] In view of the deficiencies in the related art, the present invention provides a high-speed water tunnel device. By vertically arranging the test cylinder body, the water distribution is stabilized by gravity, and it is connected and communicated with the test tube. Cooperating with the sliding piston and the rocket thruster, the piston can be pushed by the rocket thruster to make the water rush into the test tube at high speed, providing a high-speed water flow environment for the test item, simulating the action of high-speed water flow on the item, and carrying out relevant test research. Compared with the prior art, this solution can provide high-speed water flow while saving energy, so as to solve the technical problems in the prior art that high-speed water flow cannot be provided and the energy consumption is large.

[0005] The present invention provides a high-speed water tunnel device, including:

[0006] A test cylinder body, the length direction of the test cylinder body is vertically arranged, and the test cylinder body is used to accommodate water;

[0007] A test tube, the top end of the test tube is connected and communicated with the bottom end of the test cylinder body, and the test tube is used to arrange the test item;

[0008] A piston, the piston slides in the test cylinder body along the length direction of the test cylinder body;

[0009] A rocket thruster, the rocket thruster is arranged on the top of the piston, and the rocket thruster is used to push the piston towards the test tube.

[0010] In the technical solution, the test cylinder is vertically arranged to make the water distribution stable by gravity and is connected to the test tube. Cooperating with the sliding piston and the rocket thruster, the piston can be pushed by the rocket thruster to make the water rush into the test tube at high speed, providing a high-speed water flow environment for the article to be tested, simulating the action of high-speed water flow on the article, and carrying out relevant experimental studies. Compared with the prior art, this solution can provide high-speed water flow while saving energy.

[0011] In some of the embodiments, the test tube includes:

[0012] A contraction section, the top end of the contraction section is connected to the bottom end of the test cylinder, and the inner diameter of the contraction section is smaller than the inner diameter of the test cylinder;

[0013] A test section, the top end of the test section is connected to the bottom end of the contraction section; the inner diameter of the test section is smaller than the inner diameter of the contraction section.

[0014] In the technical solution, the inner diameter of the contraction section of the test tube is smaller than that of the test cylinder, which can make the water flow accelerate into the test tube; the inner diameter of the test section is smaller than that of the contraction section, which can form a stable high-speed water flow area in the test section and accurately test the performance data of the article to be tested under a specific high-speed water flow environment.

[0015] In some of the embodiments, the high-speed water tunnel device further includes a pressure stabilizing structure, and the pressure stabilizing structure includes:

[0016] A pressure stabilizing pipe, one end of the pressure stabilizing pipe is connected to the contraction section;

[0017] A pressure stabilizing air tank, the bottom end of the pressure stabilizing air tank is connected to the pressure stabilizing pipe.

[0018] In the technical solution, the pressure stabilizing pipe is connected to the contraction section, and the pressure stabilizing air tank is connected to the pressure stabilizing pipe. When the piston pushes the water flow, the water pressure in the contraction section becomes larger, and the water flow enters the pressure stabilizing air tank. At this time, the air at the top end of the pressure stabilizing air tank is compressed. When the pressure becomes smaller, the air will rebound and push the water flow in the pressure stabilizing air tank into the contraction section to ensure the stability of the water flow pressure at the contraction section. By adjusting and stabilizing the water flow pressure in the test tube through the gas pressure in the pressure stabilizing air tank, pressure fluctuations are avoided, and the accuracy and reliability of the test data are ensured.

[0019] In some of the embodiments, the pressure stabilizing structure further includes:

[0020] An exhaust pipe, one end of the exhaust pipe is connected to the top end of the pressure stabilizing air tank, and the other end is connected to the outside;

[0021] An exhaust valve, the exhaust valve is arranged on the exhaust pipe, and the exhaust valve is used to open or close the exhaust pipe.

[0022] In the technical solution, the exhaust pipe and the exhaust valve can discharge the excess gas in the pressure stabilizing tank, adjust the air pressure, accurately control the water flow pressure in the test pipe, adapt to different test conditions, and facilitate the adjustment and maintenance of the system pressure balance.

[0023] In some of the embodiments, a first stop valve is connected to the pressure stabilizing pipe, and the first stop valve is used to open or close the pressure stabilizing pipe.

[0024] In the technical solution, the first stop valve can control the connection state between the pressure stabilizing pipe and the test pipe, and can be opened or closed as needed, so that the operation mode of the test system is diverse, the operation is convenient, and the applicability and controllability of the device are improved.

[0025] In some of the embodiments, the high-speed water tunnel device further includes a reflux structure, and the reflux structure includes:

[0026] A drain pool, the bottom end of the test pipe is communicated with the drain pool, and the drain pool is communicated with the outside;

[0027] A return water pipe, one end of the return water pipe is communicated with the drain pool;

[0028] A water storage tank, the other end of the return water pipe is communicated with the water storage tank;

[0029] A return water pump, the return water pump is arranged on the return water pipe, and the return water pump is used to transport the water in the drain pool to the water storage tank.

[0030] In the technical solution, the drain pool in the reflux structure collects the water after the test, and the return water pipe, the water storage tank and the return water pump recycle and store the water, realizing the recycling of water, saving water resources, reducing the test cost and reducing the drainage pressure.

[0031] In some of the embodiments, the bottom end of the test pipe is communicated with the drain pool through a connecting pipe; a second stop valve for opening or closing the connecting pipe is arranged on the connecting pipe.

[0032] In the technical solution, the second stop valve on the connecting pipe controls the connection between the test pipe and the drain pool. After the test is completed, the second stop valve is closed, and then the test cylinder body is filled with water, which is convenient for preparing for the next test.

[0033] In some of the embodiments, the reflux structure further includes:

[0034] A water filling pipe, one end of the water filling pipe is communicated with the water storage tank, and the other end is communicated with the test cylinder body;

[0035] A water filling pump, the water filling pump is arranged on the water filling pipe, and the water filling pump is used to transport the water in the water storage tank to the test cylinder body;

[0036] A water stop valve is provided on the water supply pipe and is used to open or close the water stop valve.

[0037] In the technical solution, the water supply pipe, the water supply pump and the water stop valve can supplement the water in the water storage tank to the test cylinder, accurately control the water supply volume, and maintain the normal operation of the test system. The water stop valve prevents water leakage and backflow, ensuring the stability and safety of the system.

[0038] In some embodiments, an overflow pipe is further connected to the top of the water storage tank, and the overflow pipe is connected to the top inside the test cylinder.

[0039] In the technical solution, when there is too much water inside the test cylinder and the water level exceeds the height of the overflow pipe, the excess water will flow into the water storage tank through the overflow pipe, thereby ensuring the stability of the water flow inside the test cylinder. And when the piston is pressed down, air can be discharged through the overflow pipe to avoid air remaining inside the test cylinder.

[0040] In some embodiments, the high-speed water tunnel device further includes a feeding structure, and the feeding structure includes:

[0041] A slide rail is provided above the test cylinder.

[0042] A lifting frame is slidably connected to the slide rail, and the lifting frame is used to lift the piston and / or the rocket thruster.

[0043] A hoisting frame is slidably connected to the slide rail, and the hoisting frame is used to place or remove the test article.

[0044] In the technical solution, the slide rail of the feeding structure provides a moving track for the lifting frame and the hoisting frame. The lifting frame facilitates lifting the piston and the rocket thruster, and the hoisting frame accurately places or removes the test article, improving the operation convenience and test efficiency, and facilitating the test and equipment management.

[0045] Based on the above technical solution, in the embodiment of the present invention, the test cylinder is vertically arranged to make the water distribution stable by gravity, and is connected to the test pipe. Cooperating with the sliding piston and the rocket thruster, the piston can be pushed by the rocket thruster to make the water rush into the test pipe at high speed, providing a high-speed water flow environment for the test article, and used to simulate the action of high-speed water flow on the article to carry out relevant test research. Compared with the prior art, this solution can provide high-speed water flow while saving energy. Description of the Drawings

[0046] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0047] Figure 1 Schematic diagram of the overall structure of an embodiment of the high-speed water tunnel device of the present invention;

[0048] Figure 2 Front view of an embodiment of the high-speed water tunnel device of the present invention;

[0049] Figure 3 Top view of an embodiment of the high-speed water tunnel device of the present invention;

[0050] Figure 4 Side view of an embodiment of the high-speed water tunnel device of the present invention;

[0051] Figure 5 is Figure 4 Cross-sectional view in the A-A direction in [the figure].

[0052] In the figure:

[0053] 100, test cylinder; 200, test tube; 201, contraction section; 202, test section; 300, piston; 400, rocket thruster; 500, pressure stabilizing tube; 501, first stop valve; 600, pressure stabilizing gas tank; 700, exhaust pipe; 800, exhaust valve; 900, discharge pool; 110, return water pipe; 120, water storage tank; 130, return water pump; 140, connecting pipe; 150, second stop valve; 160, water filling pipe; 170, water filling pump; 180, water stop valve; 190, gas removal device; 210, overflow pipe; 220, valve; 230, slide rail; 240, lifting frame; 250, hoisting frame. Specific embodiments

[0054] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0056] The terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include one or more of such features.

[0057] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Please refer to all the drawings. In a schematic embodiment of the high-speed water tunnel device of the present invention, the high-speed water tunnel device includes a test cylinder 100. The length direction of the test cylinder 100 is vertically arranged, and the test cylinder 100 is used to hold water.

[0059] In some embodiments, the high-speed water tunnel device includes a test tube 200. The top end of the test tube 200 is connected and communicated with the bottom end of the test cylinder 100, and the test tube 200 is used to place the article to be tested.

[0060] In some embodiments, the high-speed water tunnel device includes a piston 300. The piston 300 slides in the test cylinder 100 along the length direction of the test cylinder 100.

[0061] In some embodiments, the high-speed water tunnel device includes a rocket thruster 400. The rocket thruster 400 is arranged on the top of the piston 300, and the rocket thruster 400 is used to push the piston 300 towards the test tube 200. The rocket thruster 400 can

[0062] Through the above solution, the vertical arrangement of the test cylinder 100 makes the water distribution stable by using gravity, and it is communicated with the test tube 200. Cooperating with the sliding piston 300 and the rocket thruster 400, the rocket thruster 400 can push the piston 300, so that the water rushes into the test tube 200 at a high speed, providing a high-speed water flow environment for the article to be tested, simulating the action of high-speed water flow on the article, and carrying out relevant experimental studies. Compared with the prior art, this solution can provide high-speed water flow while saving energy.

[0063] In the prior art, when using a conventional turbine or water pump for water supply, due to structural limitations, it is impossible to achieve a water flow output with an extremely high velocity. If multi-stage acceleration is adopted, multiple turbine or water pump structures are required, and their structures are very numerous and occupy a large amount of space. Moreover, in a series of multiple structures, as long as one structure is damaged, the entire system cannot be implemented, and the stability is extremely poor. Additionally, even if high-speed water flow is achieved through a multi-stage structure, it requires extremely high energy consumption. A single test in China's high-speed wind tunnel consumes one million kilowatt-hours of electricity, and it can be imagined how difficult and power-consuming it is for water, whose density is significantly greater than that of air, to reach a high speed.

[0064] Therefore, in the present invention, a rocket thruster 400 is adopted for propulsion, which can provide a powerful thrust and instantaneously push the piston 300 to move rapidly within the test cylinder 100. This powerful thrust can enable the water within the test cylinder 100 to obtain an extremely high velocity within an extremely short time and rush into the test tube 200 at a high speed. The magnitude of the thrust of the rocket thruster 400 can be precisely controlled by a certain method, such as adjusting the fuel quantity and ratio. This enables experimenters to flexibly adjust the velocity and pressure of the water flow according to different experimental requirements. The rocket thruster 400 has the characteristic of rapid response. Once started, it can reach the set thrust output within an extremely short time, enabling the water flow to quickly reach the required velocity and state. This is particularly important for some experiments that require quickly establishing a stable high-speed water flow environment. Each time the rocket thruster 400 is started, as long as the control parameters are the same, the thrust it generates and the effect on the water flow have a high degree of consistency and repeatability. This is very crucial for scientific research and engineering tests that require conducting multiple repeated experiments to obtain reliable data. The rocket thruster 400 itself has a relatively compact structure and occupies a small amount of space within the entire high-speed water tunnel device, and will not cause excessive interference to the overall layout of the device and the installation and operation of other components. This is conducive to the overall design and optimization of the device, making the entire high-speed water tunnel device more reasonable and compact in structure, facilitating installation, debugging, and maintenance, and at the same time reducing the manufacturing cost and operation risk of the device. The rocket thruster 400 does not rely on a complex external power transmission system and has the ability to independently generate powerful power by itself. Under some special environments or experimental conditions, even if there are short-term fluctuations or failures in the external power supply, the rocket thruster 400 can still operate normally, ensuring the continuity and stability of the experiment. Moreover, compared with electricity, the fuel of the rocket thruster 400 is easier to store and has a lower price.

[0065] In some embodiments, most of the structures of the high-speed water tunnel device are buried underground.

[0066] Further, the test cylinder 100 and the test tube 200 are buried underground. It can effectively reduce the impact of external environmental factors on the experimental device. Interference factors such as vibration, temperature change, airflow on the ground have little effect on the device buried underground, which is conducive to maintaining the stability of the device structure during the experiment and ensuring the accuracy of the experimental data. For example, in areas with busy ground traffic, the vibration generated by vehicle driving may interfere with the stability of the water flow in the experimental device and the accuracy of the measuring instrument, and underground burial can effectively avoid such problems. The underground soil environment can provide a certain lateral support force for the test cylinder 100 and the test tube 200, making it more stable when it withstands the internal water flow pressure and the strong thrust of the rocket thruster 400, and enhancing the overall strength of the device. The test cylinder 100 and the test tube 200 are buried underground, which can reduce the safety risks caused by equipment failure or unexpected situations to a certain extent. For example, if extreme situations such as the rocket thruster 400 is out of control or the test tube 200 breaks, underground burial can reduce the direct damage to personnel and surrounding facilities caused by debris splashing, water jets, etc., and improve safety.

[0067] In some embodiments, the test cylinder body 100 is cylindrical and vertically arranged, and the top of the test cylinder body 100 is open. The top of the test cylinder body 100 may not be lower than the ground, so as to prevent soil from entering the test cylinder body 100 and polluting the water source.

[0068] In some embodiments, the test tube 200 includes a contraction section 201 and a test section 202. The top of the contraction section 201 is connected to the bottom of the test cylinder 100, and the inner diameter of the contraction section 201 is smaller than the inner diameter of the test cylinder 100. The top of the test section 202 is connected to the bottom of the contraction section 201; the inner diameter of the test section 202 is smaller than the inner diameter of the contraction section 201. The contraction section 201 of the test tube 200 has an inner diameter smaller than the test cylinder 100, which can accelerate the water flow into the test tube 200; the test section 202 has an inner diameter smaller than the contraction section 201, which can form a stable high-speed water flow area in the test section 202, and accurately test the performance data of the tested item under a specific environment of high-speed water flow.

[0069] Furthermore, the contraction section 201 is in a circular tube shape, and the contraction section 201 is coaxially connected to the test cylinder body 100. The bottom or the entirety of the contraction section 201 has an inner diameter that gradually decreases from top to bottom.

[0070] Furthermore, the test section 202 is in a circular tube shape, and the test section 202 is coaxially connected to the contraction section 201 .

[0071] In some embodiments, the high-speed water tunnel device further includes a pressure stabilizing structure, and the pressure stabilizing structure includes a pressure stabilizing pipe 500 and a pressure stabilizing air tank 600. One end of the pressure stabilizing pipe 500 is communicated with the contraction section 201; the bottom end of the pressure stabilizing air tank 600 is communicated with the pressure stabilizing pipe 500. The pressure stabilizing pipe 500 is communicated with the contraction section 201, and the pressure stabilizing air tank 600 is connected to the pressure stabilizing pipe 500. When the piston 300 pushes the water flow, the water pressure in the contraction section 201 increases, and the water flow enters the pressure stabilizing air tank 600. At this time, the air at the top of the pressure stabilizing air tank 600 is compressed. When the pressure decreases, the air will rebound and push the water flow in the pressure stabilizing air tank 600 into the contraction section 201 to ensure the stable water pressure at the contraction section 201. By adjusting the gas pressure in the pressure stabilizing air tank 600 and stabilizing the water pressure in the test pipe 200, pressure fluctuations are avoided, and the accuracy and reliability of the test data are ensured.

[0072] The air at the top of the pressure stabilizing pipe acts like a spring. When the pressure in the contraction section 201 decreases, the water pressure in the pressure stabilizing air tank 600 also decreases. The water in the pressure stabilizing air tank 600 is pushed into the contraction section 201 by the rebound of the air at the top of the pressure stabilizing air tank 600 to make up for the missing pressure in the contraction section 201. Ensure the stable pressure of the water flow entering the test section 202 and improve the test accuracy and effect.

[0073] In some embodiments, an airbag is provided in the pressure stabilizing air tank 600. The water entering the pressure stabilizing air tank 600 is below the airbag. When the airbag is compressed, the peripheral wall of the airbag presses against the inner wall of the pressure stabilizing air tank 600 to achieve sealing. When the pressure stabilizing air tank 600 is damaged and leaks, the effect of stabilizing the pressure can still be achieved.

[0074] In some embodiments, the pressure stabilizing structure further includes an exhaust pipe 700 and an exhaust valve 800. Wherein, one end of the exhaust pipe 700 is communicated with the top end of the pressure stabilizing air tank 600, and the other end is communicated with the outside. The exhaust valve 800 is arranged on the exhaust pipe 700, and the exhaust valve 800 is used to open or close the exhaust pipe 700. The exhaust pipe 700 and the exhaust valve 800 can discharge the excess gas in the pressure stabilizing air tank 600, adjust the air pressure, accurately control the water pressure in the test pipe 200, adapt to different test conditions, and facilitate the adjustment and maintenance of the system pressure balance.

[0075] In some embodiments, a first stop valve 501 is connected to the pressure stabilizing pipe 500, and the first stop valve 501 is used to open or close the pressure stabilizing pipe 500. The first stop valve 501 can control the communication state between the pressure stabilizing pipe 500 and the test pipe 200, and can be opened or closed as needed, so that the operation mode of the test system is diverse, the operation is convenient, and the applicability and controllability of the device are improved.

[0076] In some embodiments, the high-speed water tunnel device further includes a reflux structure, which includes a drain pool 900, a return water pipe 110, a water storage tank 120, and a return water pump 130. Among them, the bottom end of the test pipe 200 communicates with the drain pool 900, and the drain pool 900 communicates with the outside. One end of the return water pipe 110 communicates with the drain pool 900. The other end of the return water pipe 110 communicates with the water storage tank 120. The return water pump 130 is arranged on the return water pipe 110, and the return water pump 130 is used to transport the water in the drain pool 900 to the water storage tank 120. The drain pool 900 in the reflux structure collects the water after the test, and the return water pipe 110, the water storage tank 120, and the return water pump 130 recycle and store the water, realizing the recycling of water, saving water resources, reducing the test cost, and reducing the drainage pressure.

[0077] In some embodiments, the return pool can be a single pool or a water tank.

[0078] In some embodiments, the bottom end of the test pipe 200 communicates with the drain pool 900 through a connecting pipe 140; a second stop valve 150 for opening or closing the connecting pipe 140 is arranged on the connecting pipe 140. The second stop valve 150 on the connecting pipe 140 controls the communication between the test pipe 200 and the drain pool 900. After the test is completed, the second stop valve 150 is closed, and then the test cylinder 100 is filled with water to facilitate the preparation for the next test.

[0079] In some embodiments, the reflux structure further includes a water filling pipe 160, a water filling pump 170, and a water stop valve 180. One end of the water filling pipe 160 communicates with the water storage tank 120, and the other end communicates with the test cylinder 100. The water filling pump 170 is arranged on the water filling pipe 160, and the water filling pump 170 is used to transport the water in the water storage tank 120 to the test cylinder 100. The water stop valve 180 is arranged on the water filling pipe 160, and the water stop valve 180 is used to open or close the water stop valve 180. The water filling pipe 160, the water filling pump 170, and the water stop valve 180 can replenish the water in the water storage tank 120 to the test cylinder 100, accurately control the water filling amount, maintain the normal operation of the test system, and the water stop valve 180 prevents water leakage and backflow, ensuring the stability and safety of the system.

[0080] In some embodiments, a gas removal device 190 is further arranged on the water filling pipe 160 to avoid gas entering the test cylinder 100 and affecting the test.

[0081] In some embodiments, an overflow pipe 210 is further connected to the top end of the water storage tank 120, and the overflow pipe 210 communicates with the top end inside the test cylinder 100. When the water in the test cylinder 100 is too much and the water level exceeds the height of the overflow pipe 210, the excess water will flow into the water storage tank 120 through the overflow pipe 210, thereby ensuring the stability of the water flow in the test cylinder 100. Moreover, when the piston 300 is pressed down, air can be discharged through the overflow pipe 210 to avoid air remaining in the test cylinder 100.

[0082] In some embodiments, a valve 220 is provided on the overflow pipe 210. The valve 220 can be an ordinary valve 220 and can be opened or closed according to requirements. The valve 220 can be a relief valve to ensure that the water in the test cylinder 100 can enter the water storage tank 120 while preventing the air in the water storage tank 120 from entering the test cylinder 100. Moreover, the water level height in the test cylinder 100 can be controlled by the valve 220.

[0083] In some embodiments, the high-speed water tunnel device further includes a feeding structure, which includes a slide rail 230, a lifting frame 240, and a hoisting frame 250. Among them, the slide rail 230 is arranged above the test cylinder 100. The lifting frame 240 is slidably connected to the slide rail 230, and the lifting frame 240 is used to lift the piston 300 and / or the rocket thruster 400. The hoisting frame 250 is slidably connected to the slide rail 230, and the hoisting frame 250 is used to place or remove the test article. The slide rail 230 of the feeding structure provides a moving track for the lifting frame 240 and the hoisting frame 250. The lifting frame 240 facilitates the lifting of the piston 300 and the rocket thruster 400, and the hoisting frame 250 accurately places or removes the test article, improving the operation convenience and test efficiency, and facilitating the test progress and equipment management.

[0084] In some embodiments, there are two parallel slide rails 230, and the slide rails 230 are horizontally arranged. The top end of the test cylinder 100 is located between the two slide rails 230. It can be imagined that lifting tools are connected to both the lifting frame 240 and the hoisting frame 250.

[0085] In some embodiments, the valve 220, the exhaust valve 800, the first stop valve 501, the second stop valve 150, and the water stop valve 180 can all be solenoid valves. The solenoid valve can precisely control the opening degree of the valve 220 through a controller or a program, thereby precisely regulating the flow rate and pressure of water or air flow. In a high-speed water tunnel device, for different experimental requirements, such as simulating water flow environments with different flow velocities and pressures, by precisely controlling the opening degree of the valve 220, the water flow velocity and pressure in the test tube 200 can be accurately adjusted to make the experimental conditions more accurately meet the preset requirements. In addition, with the aid of program control, these solenoid valves can automatically perform opening and closing actions according to the preset experimental procedures and conditions. Manually controlled through the controller, the operator does not need to directly operate on-site at the valve 220, and can achieve centralized control of multiple valves 220 in a control room far from the experimental device. This is particularly important in large experimental devices or experimental environments with certain risks, and the operator can monitor and adjust the experimental process more safely and conveniently. When the state of the valve 220 needs to be quickly adjusted during the experimental process, the solenoid valve can quickly respond to the instructions of the controller or the program. Compared with the manual valve 220, the solenoid valve has a faster opening and closing speed, can achieve the on-off or flow rate adjustment of water or air flow within a short time, and can timely meet the dynamic requirements during the experimental process.

[0086] In some embodiments, an installation part is provided on the piston 300, and a plurality of rocket slots are opened on the installation part. Different numbers of rocket thrusters 400 can be inserted into different rocket slots according to requirements.

[0087] In some embodiments, a feed pipe is directly provided on the installation part, the feed pipe communicates with each rocket slot, and an electromagnetic valve is provided at the corresponding position of each rocket slot in the feed pipe. The rocket thruster 400 inserted on the rocket slot can be directly refueled through the feed pipe.

[0088] In some embodiments, a sensor is provided in the rocket slot. After the sensor senses the insertion of the rocket thruster 400, the corresponding electromagnetic valve can be controlled to open. To supply fuel to the corresponding rocket thruster 400.

[0089] In some embodiments, the experimental method using the high-speed water tunnel device includes but is not limited to the following steps:

[0090] Step 1, in the experimental preparation stage, lift the piston 300 and place the test piece;

[0091] Step 2, start the water pump 170, slowly inject the water in the water storage tank 120 into the test cylinder 100 until the piston 300 reaches the ground, and keep the water level stable. Control the opening and closing of the overflow valve to control the height of the water surface in the test cylinder 100;

[0092] Step 3: Loading stage. Start the rocket engine to quickly compress the water body and accelerate the water flow in the test section 202.

[0093] Step 4: Data acquisition stage. Use measuring instruments installed inside or outside the test cylinder 100 to record key parameters such as water flow velocity and pressure.

[0094] Step 5: After the experiment, analyze the data and evaluate the response of the test piece under high-speed water flow.

[0095] Step 6: Start the water return pump 130 to inject the water that has entered the water return pool into the water storage tank 120.

[0096] Through the description of multiple embodiments of the high-speed water tunnel device of the present invention, it can be seen that the embodiments of the high-speed water tunnel device of the present invention have at least one or more of the following advantages:

[0097] 1. The test cylinder 100 is vertically arranged to make the water distribution stable by gravity, and is connected to the test tube 200. In cooperation with the sliding piston 300 and the rocket thruster 400, the piston 300 can be pushed by the rocket thruster 400 to make the water rush into the test tube 200 at high speed, providing a high-speed water flow environment for the item to be tested, simulating the action of high-speed water flow on the item, and carrying out relevant experimental studies. Compared with the prior art, this solution can provide high-speed water flow while saving energy.

[0098] 2. The high-speed water tunnel device further includes a pressure stabilizing structure, and the pressure stabilizing structure includes a pressure stabilizing tube 500 and a pressure stabilizing gas tank 600. One end of the pressure stabilizing tube 500 is connected to the contraction section 201; the bottom end of the pressure stabilizing gas tank 600 is connected to the pressure stabilizing tube 500. The pressure stabilizing tube 500 is connected to the contraction section 201, and the pressure stabilizing gas tank 600 is connected to the pressure stabilizing tube 500. When the piston 300 pushes the water flow, the water pressure in the contraction section 201 increases, and the water flow enters the pressure stabilizing gas tank 600. At this time, the air at the top of the pressure stabilizing gas tank 600 is compressed. When the pressure decreases, the air will rebound and push the water flow in the pressure stabilizing gas tank 600 into the contraction section 201 to ensure the stability of the water flow pressure at the contraction section 201. By adjusting the gas pressure in the pressure stabilizing gas tank 600 to stabilize the water flow pressure in the test tube 200, pressure fluctuations are avoided, ensuring the accuracy and reliability of the test data.

[0099] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and the key points of each embodiment are the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0100] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or make equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A high-speed water tunnel device, characterized in that: include: A test cylinder body, wherein the length direction of the test cylinder body is vertically arranged and the test cylinder body is used to contain water; A test tube, the top end of which is connected to and communicated with the bottom end of the test cylinder, and the test tube is used to place the test object; A piston, wherein the piston slides inside the test cylinder along the length direction of the test cylinder; A rocket thruster, the rocket thruster is arranged on the top of the piston, and the rocket thruster is used to push the piston toward the test tube; The test tube comprises: A contraction section, the top end of which is connected to the bottom end of the test cylinder, and the inner diameter of which is smaller than the inner diameter of the test cylinder; A test section, wherein the top end of the test section is connected to the bottom end of the contraction section; the inner diameter of the test section is smaller than the inner diameter of the contraction section; The high-speed water tunnel device also includes a pressure stabilizing structure, which includes: A voltage regulator tube, one end of which is connected to the contraction section; A pressure-stabilizing gas tank, the bottom end of which is connected to a pressure-stabilizing tube.

2. The high-speed water tunnel device according to claim 1, characterized in that: The voltage stabilizing structure further includes: An exhaust pipe, one end of which is connected to the top of the pressure-stabilizing gas tank, and the other end of which is connected to the outside; An exhaust valve is arranged on the exhaust pipe, and is used to open or close the exhaust pipe.

3. The high-speed water tunnel device according to claim 1, characterized in that: The voltage-stabilizing tube is connected with a first stop valve, and the first stop valve is used to open or close the voltage-stabilizing tube.

4. The high-speed water tunnel device according to claim 1, characterized in that: The high-speed water tunnel device also includes a reflux structure, which includes: A drain tank, the bottom end of the test tube is connected to the drain tank, and the drain tank is connected to the outside world; A water return pipe, one end of which is connected to the drain tank; A water storage tank, the other end of the water return pipe is connected to the water storage tank; A return water pump is arranged on the return water pipe, and is used to transport water in the drainage tank to the water storage tank.

5. The high-speed water tunnel device according to claim 4, characterized in that: The bottom end of the test pipe is connected to the drain tank via a connecting pipe; a second stop valve for opening or closing the connecting pipe is provided on the connecting pipe.

6. The high-speed water tunnel device according to claim 4, characterized in that: The reflux structure further comprises: A water supply pipe, one end of which is connected to the water storage tank, and the other end of which is connected to the test cylinder; A water adding pump, the water adding pump is arranged on the water adding pipe, and the water adding pump is used to transport the water in the water storage tank to the test cylinder; A water stop valve is arranged on the water supply pipe, and the water stop valve is used to open or close the water stop valve.

7. The high-speed water tunnel device according to claim 4, characterized in that: The top of the water storage tank is also connected with an overflow pipe, and the overflow pipe is connected with the top of the interior of the test cylinder.

8. The high-speed water tunnel device according to any one of claims 1 to 7, characterized in that: The high-speed water tunnel device also includes a feeding structure, which includes: A slide rail, the slide rail is arranged above the test cylinder body; A lifting frame, the lifting frame is slidably connected to the slide rail, and the lifting frame is used to lift the piston and / or the rocket thruster; A hanging frame is slidably connected to the slide rail and is used to put in or take out the tested object.

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