High-speed water tunnel device

Abstract

The invention relates to a high-speed water tunnel device, and belongs to the field of hydrodynamic experiments, and the high-speed water tunnel device comprises a test cylinder body, a test tube, a piston and a rocket propeller. Wherein the length direction of the test cylinder body is vertically arranged, and the test cylinder body is used for accommodating water; the top end of the test tube is connected and communicated to the bottom end of the test cylinder body, and a tested object is arranged in the test tube; the piston slides in the test cylinder body along the length direction of the test cylinder body; the rocket propeller is arranged at the top of the piston and used for pushing the piston to the test tube.

Description

Technical Field

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

[0002] The water tunnel test is mainly carried out in a closed, water-filled experimental device to study the interaction between fluid and objects by simulating the movement of objects in water flow. The principle is to use water as the working medium, circulate water in the tunnel through a power device to generate a stable water flow velocity field, and then place the test model in the water flow to observe and measure relevant physical quantities.

[0003] At present, the study of the dynamic behavior of seabed topography and underwater structures, especially the behavioral characteristics of these research objects under the conditions of simulating high-speed water flow, has important scientific significance and engineering application value. However, conventional water tunnel experimental devices have problems such as limited water flow speed and single loading method when simulating high-speed water flow environments, and cannot meet the experimental needs under special conditions. Summary of the invention

[0004] In view of the shortcomings in the related technologies, the present invention provides a high-speed water tunnel device, which uses gravity to stabilize the water distribution by setting the test cylinder vertically, and is connected to the test tube. With the help of a sliding piston and a rocket thruster, the piston can be pushed by the rocket thruster to make water rush into the test tube at high speed, providing a high-speed water flow environment for the tested objects, simulating the effect of high-speed water flow on the objects, and conducting related experimental research. Compared with the existing technology, this solution can provide high-speed water flow while saving energy, so as to solve the technical problems of the existing technology that it cannot provide high-speed water flow and consumes a lot of energy.

[0005] The present invention provides a high-speed water tunnel device, comprising: 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 is disposed on the top of the piston and is used to push the piston toward the test tube.

[0006] In the technical solution, the test cylinder is set vertically to use gravity to stabilize the water distribution, and is connected to the test tube. With the sliding piston and rocket thruster, the piston can be pushed by the rocket thruster to make water rush into the test tube at high speed, providing a high-speed water flow environment for the tested object, which is used to simulate the effect of high-speed water flow on the object and carry out relevant experimental research. Compared with the existing technology, this solution can provide high-speed water flow while saving energy.

[0007] In some embodiments, 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, the top end of which is connected to the bottom end of the contraction section; and the inner diameter of the test section is smaller than the inner diameter of the contraction section.

[0008] In the technical solution, the inner diameter of the contraction section of the test tube is smaller than the test cylinder body, which can accelerate the water flow into the test tube; the inner diameter of the test section is smaller than 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 test object under the specific environment of high-speed water flow.

[0009] In some embodiments, the high-speed water tunnel device further includes a pressure stabilizing structure, and the pressure stabilizing structure 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.

[0010] In the technical solution, the pressure-stabilizing tube is connected to the contraction section, and the pressure-stabilizing gas tank is connected to the pressure-stabilizing tube. When the piston pushes the water flow, the water pressure in the contraction section increases, and the water flows into the pressure-stabilizing gas tank. At this time, the air at the top of the pressure-stabilizing gas tank is compressed. When the pressure decreases, the air will rebound and push the water flow in the pressure-stabilizing gas tank into the contraction section, ensuring that the water flow pressure at the contraction section is stable. By regulating and stabilizing the water flow pressure in the test tube through the gas pressure in the pressure-stabilizing gas tank, pressure fluctuations are avoided, ensuring the accuracy and reliability of the test data.

[0011] In some embodiments, 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.

[0012] In the technical solution, the exhaust pipe and exhaust valve can discharge excess gas in the pressure-stabilizing gas tank, adjust the air pressure, accurately control the water flow pressure in the test tube, adapt to different test conditions, and facilitate system pressure balance adjustment and maintenance.

[0013] In some embodiments, a first stop valve is connected to the voltage regulator tube, and the first stop valve is used to open or close the voltage regulator tube.

[0014] In the technical solution, the first stop valve can control the connection state between the voltage-stabilizing tube and the test tube, and open or close it as needed, so that the test system has diverse operating modes, convenient operation, and improves the applicability and controllability of the device.

[0015] In some embodiments, the high-speed water tunnel device further includes a reflux structure, and the reflux structure 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.

[0016] In the technical solution, the drainage pool in the return structure collects the water after the test, and the return pipe, water storage tank and return pump recycle and store the water to achieve water recycling, save water resources, reduce test costs and reduce drainage pressure.

[0017] In some embodiments, the bottom end of the test tube 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.

[0018] In the technical solution, the second stop valve on the connecting pipe controls the test pipe to be connected to the drain tank. After the test is completed, the second stop valve is closed and water is injected into the test cylinder to facilitate preparation for the next test.

[0019] In some embodiments, 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.

[0020] In the technical solution, the water supply pipe, water supply pump and water stop valve can add water from the water storage tank to the test cylinder, accurately control the amount of water added, and maintain the normal operation of the test system. The water stop valve prevents water leakage and backflow to ensure the stability and safety of the system.

[0021] In some embodiments, the top of the water storage tank is also connected to an overflow pipe, and the overflow pipe is connected to the top of the interior of the test cylinder.

[0022] 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 in the test cylinder. When the piston is pressed down, the air can be discharged through the overflow pipe to prevent air from remaining in the test cylinder.

[0023] In some embodiments, the high-speed water tunnel device further includes a feeding structure, wherein the feeding structure 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.

[0024] In the technical solution, the slide rails of the feeding structure provide moving tracks for the lifting frame and the hoisting frame. The lifting frame facilitates lifting the piston and rocket thruster, and the hoisting frame accurately places or takes out the test objects, thereby improving operational convenience and test efficiency, and facilitating test progress and equipment management.

[0025] Based on the above technical solution, in the embodiment of the present invention, the test cylinder is vertically arranged to use gravity to stabilize the water distribution, and is connected to the test tube. With the sliding piston and rocket thruster, the piston can be pushed by the rocket thruster to make water rush into the test tube at high speed, providing a high-speed water flow environment for the tested object, which is used to simulate the effect of high-speed water flow on the object and carry out relevant experimental research. Compared with the existing technology, this solution can provide high-speed water flow while saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall structure of an embodiment of the high-speed water tunnel device of the present invention; Figure 2 A front view of an embodiment of a high-speed water tunnel device of the present invention; Figure 3 A top view of an embodiment of a high-speed water tunnel device of the present invention; Figure 4 A side view of an embodiment of a high-speed water tunnel device of the present invention; Figure 5 yes Figure 4Cross-sectional view along the AA direction.

[0027] In the figure: 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, drain tank; 110, return pipe; 120, water storage tank; 130, return pump; 140, connecting pipe; 150, second stop valve; 160, water supply pipe; 170, water supply pump; 180, water stop valve; 190, gas removal device; 210, overflow pipe; 220, valve; 230, slide rail; 240, lifting frame; 250, hoisting frame. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations 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 understood as a limitation on the present invention.

[0030] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Please refer to all the drawings. In an illustrative 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 contain water.

[0033] In some embodiments, the high-speed water tunnel device includes a test tube 200 , the top end of the test tube 200 is connected to and communicated with the bottom end of the test cylinder 100 , and the test tube 200 is used to place the test object.

[0034] In some embodiments, the high-speed water tunnel device includes a piston 300 , and the piston 300 slides in the test cylinder 100 along the length direction of the test cylinder 100 .

[0035] In some embodiments, the high-speed water tunnel device includes a rocket thruster 400, which is disposed on the top of the piston 300 and is used to push the piston 300 toward the test tube 200. The rocket thruster 400 can Through the above scheme, the test cylinder 100 is vertically arranged to use gravity to stabilize the water distribution, and is connected to the test tube 200. With the sliding piston 300 and the rocket thruster 400, the piston 300 can be pushed by the rocket thruster 400 to make water rush into the test tube 200 at high speed, providing a high-speed water flow environment for the tested object, which is used to simulate the effect of high-speed water flow on the object and carry out relevant experimental research. Compared with the existing technology, this scheme can provide high-speed water flow while saving energy.

[0036] In the prior art, if conventional turbines or water pumps are used for water supply, it is impossible to achieve extremely high flow rate water output due to structural limitations. If multi-stage acceleration is adopted, multiple turbine or water pump structures are required, which have many structures and occupy a large space. And if one of the multiple series structures is damaged, the entire system cannot be implemented and the stability is extremely poor. Moreover, even if the water flow is achieved at a high speed through a multi-stage structure, it requires a huge amount of energy consumption. A single test in my country's high-speed wind tunnel requires millions of kilowatt-hours of electricity, and the difficulty and power consumption of achieving high speed with water whose density is significantly greater than that of air can be imagined.

[0037] Therefore, the rocket thruster 400 is used in the present invention to push, which can provide a strong thrust, and instantly push the piston 300 to move quickly in the test cylinder body 100. This strong thrust can make the water in the test cylinder body 100 obtain a very high speed in a very short time, and rush into the test tube 200 at high speed. The thrust size of the rocket thruster 400 can be accurately controlled in a certain way, such as adjusting the amount of fuel and the ratio. This allows the experimenter to flexibly adjust the speed and pressure of the water flow according to different experimental requirements. The rocket thruster 400 has the characteristics of rapid response. Once started, it can reach the set thrust output in a very short time, so that the water flow quickly reaches the required speed and state. This is particularly important for some experiments that need to quickly establish a stable high-speed water flow environment. When the rocket thruster 400 is started each time, 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 critical for scientific research and engineering tests that require repeated experiments to obtain reliable data. The rocket thruster 400 itself has a relatively compact structure and occupies less space in the entire high-speed water tunnel device, and will not cause too much 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, easy to install, debug and maintain, while also reducing the manufacturing cost and operating 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. In some special environments or experimental conditions, even if the external power supply fluctuates or fails briefly, the rocket thruster 400 can still work normally to ensure the continuity and stability of the experiment. And the fuel of the rocket thruster 400 is easier to store and cheaper than electricity.

[0038] In some embodiments, most of the structure of the high-speed water tunnel device is buried underground.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 entire contraction section 201 has a gradually decreasing inner diameter from top to bottom.

[0043] Furthermore, the test section 202 is in a circular tube shape, and the test section 202 is coaxially connected to the contraction section 201 .

[0044] In some embodiments, the high-speed water tunnel device further includes a pressure stabilizing structure, which includes 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 becomes smaller, the air will rebound and push the water flow in the pressure stabilizing gas tank 600 into the contraction section 201, ensuring that the water flow pressure at the contraction section 201 is stable. The water flow pressure in the test tube 200 is regulated and stabilized by the gas pressure in the pressure stabilizing gas tank 600 to avoid pressure fluctuations and ensure the accuracy and reliability of the test data.

[0045] The air at the top of the pressure-stabilizing air pipe acts as 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. This ensures that the pressure of the water flow entering the test section 202 is stable, thereby improving the accuracy and effect of the test.

[0046] In some embodiments, an air bag is provided in the pressure-stabilizing gas tank 600. Water entering the pressure-stabilizing gas tank 600 is below the air bag, and when the air bag is compressed, the peripheral wall of the air bag presses against the inner wall of the pressure-stabilizing gas tank 600 to achieve sealing. When the pressure-stabilizing gas tank 600 is damaged and leaks, the pressure-stabilizing effect can also be achieved.

[0047] In some embodiments, the pressure stabilizing structure further includes an exhaust pipe 700 and an exhaust valve 800. One end of the exhaust pipe 700 is connected to the top of the pressure stabilizing gas tank 600, and the other end is connected to 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 gas tank 600, adjust the air pressure, accurately control the water flow pressure in the test tube 200, adapt to different test conditions, and facilitate the pressure balance adjustment and maintenance of the system.

[0048] In some embodiments, the voltage regulator tube 500 is connected to a first stop valve 501, and the first stop valve 501 is used to open or close the voltage regulator tube 500. The first stop valve 501 can control the connection state between the voltage regulator tube 500 and the test tube 200, and can be opened or closed as needed, so that the test system has various operation modes, convenient operation, and improved applicability and controllability of the device.

[0049] In some embodiments, the high-speed water tunnel device further includes a backflow structure, which includes a drain tank 900, a backflow pipe 110, a water storage tank 120, and a backflow pump 130. The bottom end of the test tube 200 is connected to the drain tank 900, and the drain tank 900 is connected to the outside. One end of the backflow pipe 110 is connected to the drain tank 900. The other end of the backflow pipe 110 is connected to the water storage tank 120. The backflow pump 130 is arranged on the backflow pipe 110, and the backflow pump 130 is used to transport the water in the drain tank 900 to the water storage tank 120. The drain tank 900 in the backflow structure collects the water after the test, and the backflow pipe 110, the water storage tank 120, and the backflow pump 130 recycle and store the water, so as to realize the recycling of water, save water resources, reduce the test cost, and reduce the drainage pressure.

[0050] In some embodiments, the return water pool can be a pool or a water tank.

[0051] In some embodiments, the bottom end of the test tube 200 is connected to the drain tank 900 through a connecting tube 140; the connecting tube 140 is provided with a second stop valve 150 for opening or closing the connecting tube 140. The second stop valve 150 on the connecting tube 140 controls the test tube 200 to be connected to the drain tank 900. After the test is completed, the second stop valve 150 is closed, and water is then injected into the test cylinder 100 to facilitate preparation for the next test.

[0052] In some embodiments, the reflux structure further includes a water supply pipe 160, a water supply pump 170 and a water stop valve 180. One end of the water supply pipe 160 is connected to the water storage tank 120, and the other end is connected to the test cylinder 100. The water supply pump 170 is arranged on the water supply pipe 160, and the water supply 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 supply pipe 160, and the water stop valve 180 is used to open or close the water stop valve 180. The water supply pipe 160, the water supply pump 170 and the water stop valve 180 can add water from the water storage tank 120 to the test cylinder 100, accurately control the amount of water added, maintain the normal operation of the test system, and the water stop valve 180 prevents water leakage and backflow, and ensures the stability and safety of the system.

[0053] In some embodiments, a gas removal device 190 is further provided on the water supply pipe 160 to prevent gas from entering the test cylinder 100 and affecting the test.

[0054] In some embodiments, the top of the water storage tank 120 is also connected to an overflow pipe 210, and the overflow pipe 210 is connected to the top of the inside of the test cylinder 100. When there is too much water inside the test cylinder 100 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, and when the piston 300 is pressed down, the air can be discharged through the overflow pipe 210 to prevent the air from remaining in the test cylinder 100.

[0055] In some embodiments, a valve 220 is provided on the overflow pipe 210, and the valve 220 may be a common valve 220, which is opened or closed as required. The valve 220 may be an overflow valve, which ensures that the water in the test cylinder 100 can enter the water storage tank 120 and prevents the air in the water storage tank 120 from entering the test cylinder 100. In addition, the water level in the test cylinder 100 may be controlled by the valve 220.

[0056] In some embodiments, the high-speed water tunnel device also includes a feeding structure, which includes a slide rail 230, a lifting frame 240 and a hanging 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 hanging frame 250 is slidably connected to the slide rail 230, and the hanging frame 250 is used to put in or take out the tested object. The slide rail 230 of the feeding structure provides a moving track for the lifting frame 240 and the hanging frame 250, and the lifting frame 240 facilitates the lifting of the piston 300 and the rocket thruster 400, and the hanging frame 250 accurately puts in or takes out the tested object, improves the convenience of operation and the test efficiency, and is conducive to the test and equipment management.

[0057] In some embodiments, there are two parallel slide rails 230, and the slide rails 230 are arranged horizontally. The top of the test cylinder 100 is located between the two slide rails 230. It is conceivable that both the lifting frame 240 and the hanging frame 250 are connected with hanging tools.

[0058] 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 achieve precise control of the opening of the valve 220 through a controller or a program, thereby accurately adjusting the flow rate and pressure of the water flow or air flow. In the high-speed water tunnel device, for different experimental requirements, such as simulating a water flow environment with different flow rates and pressures, by accurately controlling the opening of the valve 220, the water flow rate and pressure in the test tube 200 can be accurately adjusted, so that the experimental conditions more accurately meet the preset requirements. In addition, with the help of program control, these solenoid valves can automatically perform switching actions according to the preset experimental process and conditions. Manual control is performed through a controller, and the operator does not need to directly operate the valve 220 on site, and can achieve centralized control of multiple valves 220 in a control room far away from the experimental device. This is particularly important in large-scale 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 experiment, the solenoid valve can quickly respond to the instructions of the controller or program. Compared with the manual valve 220, the solenoid valve has a faster switching speed, and can realize the on-off or flow regulation of water flow or air flow in a short time, so as to meet the dynamic needs in the experiment process in time.

[0059] In some embodiments, a mounting piece is provided on the piston 300, and a plurality of rocket slots are provided on the mounting piece. Different numbers of rocket thrusters 400 can be inserted into different rocket slots according to requirements.

[0060] In some embodiments, a feed pipe is directly provided on the mounting member, the feed pipe is connected to each rocket slot, and an electric control valve is provided at the corresponding feed pipe in each rocket slot. The rocket thruster 400 inserted in the rocket slot can be directly refueled through the feed pipe.

[0061] In some embodiments, a sensor is provided in the rocket slot. When the sensor senses that the rocket thruster 400 is inserted, the corresponding electric control valve can be controlled to open, thereby supplying fuel to the corresponding rocket thruster 400.

[0062] In some embodiments, the experimental method using the high-speed water tunnel apparatus includes but is not limited to the following steps: Step 1: In the experimental preparation stage, the piston 300 is lifted and the test piece is placed; 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, and control the height of the horizontal surface in the test cylinder 100 by opening and closing the overflow valve; Step 3, loading stage, starting the rocket engine to quickly compress the water body to accelerate the water flow in the test section 202; Step 4: Data collection stage: using measuring instruments installed inside or outside the test cylinder 100 to record key parameters such as water flow velocity and pressure; Step 5: After the experiment, analyze the data and evaluate the response of the test piece under high-speed water flow.

[0063] Step 6: Start the return water pump 130 to inject the water entering the return water pool into the water storage tank 120.

[0064] Through the description of multiple embodiments of the high-speed water tunnel device of the present invention, it can be seen that the high-speed water tunnel device of the present invention has at least one or more of the following advantages: 1. The test cylinder 100 is vertically arranged to use gravity to stabilize the water distribution, and is connected to the test tube 200. With the sliding piston 300 and the rocket thruster 400, the piston 300 can be pushed by the rocket thruster 400 to make water rush into the test tube 200 at high speed, providing a high-speed water flow environment for the tested object, which is used to simulate the effect of high-speed water flow on the object and carry out relevant experimental research. Compared with the existing technology, this solution can provide high-speed water flow while saving energy; 2. The high-speed water tunnel device also includes a pressure stabilizing structure, which includes 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, ensuring that the water flow pressure at the contraction section 201 is stable. The water flow pressure in the test tube 200 is regulated and stabilized by the gas pressure in the pressure stabilizing gas tank 600 to avoid pressure fluctuations and ensure the accuracy and reliability of the test data.

[0065] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of 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 is disposed on the top of the piston and is used to push the piston toward the test tube.

2. The high-speed water tunnel device according to claim 1, characterized in that: 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, the top end of which is connected to the bottom end of the contraction section; and the inner diameter of the test section is smaller than the inner diameter of the contraction section.

3. The high-speed water tunnel device according to claim 2, characterized in that: 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.

4. The high-speed water tunnel device according to claim 3, 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.

5. The high-speed water tunnel device according to claim 3, 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.

6. The high-speed water tunnel device according to claim 2, 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.

7. The high-speed water tunnel device according to claim 6, 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.

8. The high-speed water tunnel device according to claim 6, 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.

9. The high-speed water tunnel device according to claim 6, 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.

10. The high-speed water tunnel device according to any one of claims 1 to 9, 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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