In-situ jet flow experiment device, system and method

Abstract

The invention relates to the technical field of ocean engineering, in particular to an in-situ jet experiment device, system and method. The device is a detachable movable jet device and comprises a frame body, a jet mechanism, a soil tank and a soil preparation mechanism. And the jet mechanism is detachably fixed in the frame body. The soil making mechanism is arranged at the upper end of the soil tank and connected with the soil tank through horizontal sliding rails arranged on the two sides of the interior of the soil tank. The soil tank can be moved out of the frame body. The jet mechanism comprises a nozzle and a moving platform. The moving platform comprises supporting legs, an X-axis sliding rail, an X-axis sliding block, a Y-axis sliding rail, a Y-axis sliding block, a Z-axis sliding rail and a Z-axis sliding block. A sensor is arranged in the nozzle and used for obtaining the position of the nozzle and real-time data of the nozzle, and a water inlet pipe of the nozzle is arranged to be in an arc shape. The device is of a detachable structure, is not limited by a fixed place, is flexible to use and high in maintenance efficiency, improves the experiment efficiency and accuracy, reduces energy consumption and loss through a counter-force structure, and prolongs the service life of equipment.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, and in particular to an in-situ jet experiment device and method. Background Art

[0002] The jet experiment has important application value in the field of marine engineering, especially in the design of offshore platforms, laying of submarine pipelines, environmental pollution control, etc. With the continuous development of technology, the jet experiment plays an increasingly important role in simulating the flow and interaction in the marine environment and optimizing engineering design. The current jet experiment is to collect in-situ soil and then arrive at a specific jet laboratory for experiment.

[0003] The above method has the following problems: 1. It takes some time for the in-situ soil to arrive at the laboratory after collection. During this process, it is easy to cause errors between the measured soil samples and the existing soil samples, affecting the accuracy of the experiment. 2. After the collection, subsequent experiments are carried out in specific laboratories, which affects the efficiency of the experiment. In addition, the nozzles used in existing jet experiments will have a certain impact on the nozzles during the injection process due to the reaction force, causing equipment failure and affecting the service life of the nozzles. In addition, the generated reaction force will cause a large amount of energy loss.

[0004] Therefore, in view of the shortcomings of the existing technology, it is now urgent to improve the existing jet experimental devices, systems and methods. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides an in-situ jet experiment device, system and method. The in-situ jet experiment device of the present invention is detachable and movable, and can perform real-time in-situ jet experiments, thereby improving the efficiency and accuracy of the jet experiments.

[0006] The technical solution of the present invention is:

[0007] An in-situ jet experiment device is provided as a detachable mobile jet device, which can be adaptively adjusted according to different experimental positions. It includes a frame, a jet mechanism, a soil trough box and a soil making mechanism. The jet mechanism is detachably fixed in the frame. The soil making mechanism is arranged at the upper end of the soil trough box and is connected to the soil trough box through horizontal slide rails arranged on both sides of the soil trough box. The soil trough box is arranged within the injection movement range of the jet mechanism and can be moved out of the frame. The jet mechanism includes a nozzle and a mobile platform. The mobile platform includes a support leg, an X-axis slide rail, an X-axis slider, a Y-axis slide rail, a Y-axis slider, a Z-axis slide rail and a Z-axis slider. The support leg is vertically fixed to the bottom surface of the frame. The X-axis slide rail is arranged at the upper end of the support leg and is perpendicular to the support leg. The Y-axis slide rail is connected to the X-axis slide rail through the X-axis slider. The Z-axis slide rail is connected to the Y-axis slide rail through the Y-axis slider. The nozzle is connected to the Z-axis through the Z-axis slider. A sensor is arranged inside the nozzle for obtaining the nozzle position and real-time data of the nozzle. The water inlet pipe of the nozzle is arranged in an arc shape.

[0008] Furthermore, the frame includes an I-beam frame, a door, a side sliding door, an electric control box, a water tank, a hydraulic box, a hydraulic rod and a moving plate. The door is arranged at the front end of the I-beam frame, and the side sliding door is arranged at one side of the I-beam frame. The movement of the side sliding door facilitates the entry and exit of the soil trough box. The electric control box, the water tank and the hydraulic box are arranged inside the I-beam frame and close to the side. The hydraulic rod is connected to the hydraulic box, and the output end of the hydraulic rod is connected to the moving plate to drive the horizontal movement of the moving plate, thereby moving the soil trough box arranged on the moving plate to a designated position.

[0009] Furthermore, the legs are arranged in a matrix of four. The X-axis slide rails include two sets arranged in parallel. Each set of X-axis slide rails is arranged as two sets arranged in parallel. The Y-axis slide rails are arranged as two sets arranged in parallel up and down. The two slide rails connect the two sets of X-axis slide rails through the X-axis slider. The Z-axis slide rail is arranged vertically and connected to the two Y-axis slide rails through the Y-axis slider.

[0010] Furthermore, a rack parallel to the X-axis slide rails is provided in the middle position of the two X-axis slide rails. A first drive motor is connected to one end of the Y-axis slider. A gear meshing with the rack is provided at the output end of the first drive motor. The first drive motor gear moves horizontally on the rack and drives the Y-axis slide rail to move horizontally on the X-axis slide rail. A first screw assembly is provided at the center of the two Y-axis slide rails. The Y-axis slider is connected to the first screw assembly. The first screw assembly rotates to drive the Y-axis slider to move, and then drives the Z-axis slide rail connected to the Y-axis slider to move. A second screw assembly is provided on the Z-axis slide rail. The Z-axis slider is connected to the second screw assembly. The second screw assembly rotates to drive the Z-axis slider to move up and down, and then drives the nozzle to move up and down.

[0011] Furthermore, the legs include a fixed leg and a movable leg. The bottom of the fixed leg is fixed to the frame. The movable leg is sleeved on the fixed leg. The fixed leg is provided with a plurality of limiting holes arranged in a matrix on the outside. The movable leg is provided with an elastic limiting column corresponding to the size of the limiting hole.

[0012] Furthermore, a first nozzle angle adjustment mechanism and a second nozzle angle adjustment mechanism are provided on the nozzle, the first nozzle angle adjustment mechanism is provided as a second drive motor, the output end of the second drive motor is connected to the cross frame, the cross frame is connected to the nozzle through the connecting frame, and the second drive motor rotates to drive the nozzle to swing left and right in the horizontal plane of the X-axis slide rail and the Y-axis slide rail. The second nozzle angle adjustment mechanism is provided as a third drive motor, the third drive motor is connected to the connecting frame, and the third drive motor rotates to drive the nozzle provided on the connecting frame to swing back and forth.

[0013] Furthermore, the X-axis slide rail is detachably connected to the support leg through a flange. A movable plate is arranged at the bottom of the frame. One end of the movable plate is connected to the frame through a hydraulic rod. The soil trough box is arranged on the movable plate.

[0014] Furthermore, the soil trough box is configured as a rectangular frame. A water-permeable partition disposed horizontally and spaced from the bottom plate of the soil trough box is disposed at the bottom of the soil trough box. The water-permeable partition is provided with a plurality of water-permeable holes arranged in a matrix at a distance. A central partition disposed vertically is also provided on the soil trough box. A water discharge inlet is provided at the rear bottom of the soil trough box.

[0015] Furthermore, the soil making mechanism includes a traveling frame, and traveling rollers are arranged on both sides of the traveling frame, and the traveling rollers are driven by a motor to move on a horizontal slide rail. The traveling frame is provided with two scraping tracks arranged parallel to the long sides of the traveling frame, and the two scraping tracks are connected to two compacting telescopic rods through the scraping rollers, and a screed plate is arranged at the bottom of the two compacting telescopic rods, and a scraper perpendicular to the screed plate is arranged on one side of the screed plate.

[0016] An in-situ jet experiment system. It includes the above-mentioned in-situ jet experiment device, and also includes a control module and a nozzle moving module connected to the control module, a nozzle injection module, a nozzle data acquisition module, a soil trough box input and output module, a data processing module and a data storage module. The nozzle moving module controls the movement of the nozzle on the X-axis slide rail, the Y-axis slide rail, and the Z-axis slide rail, as well as the left and right, front and back swings, to meet the injection needs of different positions. The injection module includes a water pump and a pipeline. The nozzle is connected to the water pump through a pipeline for supplying water flow to the nozzle and regulating the flow rate. The nozzle data acquisition module includes a flow sensor, a flow velocity sensor, a pressure sensor, an angle sensor and a position sensor, which are used to obtain the flow rate, flow velocity, pressure, angle and position data at the nozzle, and transmit these signals to the nozzle data acquisition module. The nozzle data acquisition module transmits the obtained data to the data processing module. A finite element analysis system is provided in the data processing module. The digital model and the physical model are compared through the finite element analysis system, and then the corresponding physical parameters such as the displacement of the nozzle or the injection velocity or the injection flow rate are adjusted through the control module. The soil trough box input and output module includes a hydraulic system. The movement of the moving plate is controlled by the hydraulic system to move the soil tank box into the injection movement range of the jet mechanism. The data storage module is used to store the data obtained during the experiment and generate an experimental report for subsequent analysis.

[0017] An in-situ fluidic experiment method, comprising the in-situ fluidic experiment device and the in-situ fluidic experiment system, comprises the following steps:

[0018] The equipment is powered on and started, and soil samples are prepared in the soil trough box. During the soil sample preparation process, each layer of soil sample is leveled by the soil making mechanism, and water is injected from the water inlet hole at the bottom of the soil trough box. After a single layer is saturated with water, the next layer is leveled and water is injected to achieve layered soil making.

[0019] After the soil sample is prepared, it is transported to the mobile platform for jetting operation.

[0020] The mobile platform performs self-check, enters standby mode, and adjusts the jet nozzle to the specified height.

[0021] Start the water pump to control the velocity and flow rate of the nozzle jet. The computer controls the corresponding motor to rotate, drive the nozzle to move, and achieve flushing and breaking of the soil at different positions.

[0022] The computer acquires the data collected by the sensor, displays it in real time, and analyzes the collected data.

[0023] The damage situation of the soil in the soil trough box is transmitted to the computer in real time via video to observe the damage law of the soil in the soil trough box.

[0024] The nozzle reaction force is collected and analyzed, and the soil destruction effects under different reaction forces are compared.

[0025] Call the data fitting program to give the soil deformation and reaction force curve.

[0026] Change input variables, such as jet velocity; adjust the nozzle angle to re-jet the soil in the soil trough box; run the scale model in the device system and the virtual finite element model in the computer at the same time; use the regression analysis algorithm to compare and verify the physical model results with the numerical calculation results; finally, give the optimized physical model and numerical model comparison results, and finally build an accurate digital twin model.

[0027] The beneficial effects achieved by the present invention are:

[0028] 1. The entire device of the present invention adopts a detachable structural design, which is convenient for corresponding adjustments according to the jet experiment in different positions. It is not restricted by the site and the water and electricity in a fixed location, and achieves the effect of "moving and using", which greatly improves the flexibility of the experiment. In-situ jet experiments are realized to improve the experimental efficiency and accuracy. In addition, the detachable structural design allows for timely disassembly and replacement of a component in the device when it is damaged, with low maintenance costs, and can avoid the continuity of the experiment and the reliability of the data caused by long-term downtime.

[0029] 2. The nozzle in the present invention uses a mobile platform to offset the reaction force generated by the nozzle spray step by step, thereby avoiding damage to the nozzle and energy loss caused by the reaction force and increasing the life of the nozzle.

[0030] 3. The present invention sets a sensor at the upper end of the nozzle, which is closer to the reaction force point, and can accurately measure the jet reaction force. In addition, the data at the nozzle can be obtained in real time and accurately, thereby improving the accuracy of the experiment.

[0031] 4. The present invention acquires the parameters required by the device (such as soil properties, nozzle angle, flow rate, flow velocity, reaction force, etc.) by real-time acquisition of nozzle end sensor data and accurate simulation of the seabed conditions required for the experiment, and organizes and transmits these data to the finite element analysis (FEM) system. The FEM system performs efficient simulation calculations based on the input experimental related data to generate digital model results closely related to the experiment. Based on the in-depth analysis of the numerical results, the experimental device parameters are automatically adjusted to make the experimental results more in line with expectations. Finite element analysis is performed again based on the new experimental results, and the physical model parameters are further adjusted. This cycle repeats until the experimental results meet the expected requirements. This closed-loop mechanism achieves a high degree of coordination and interaction between digital and physical models, which not only promotes the optimization of experimental data, but also realizes the efficient application of digital twin technology, and completes the two-way adjustment and continuous optimization between digital models and physical models.

[0032] 5. In the process of soil making, the present invention levels each layer of soil sample through the soil making mechanism, and then injects water from the water inlet and outlet holes at the bottom of the soil trough box. After a single layer is saturated with water, the next layer is leveled and water is injected to make soil in layers. The accuracy of making in-situ soil is greatly improved by making soil in layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 It is a schematic diagram of the structure of the present invention after removing the door.

[0035] Figure 3 It is a schematic diagram of the structure of the mobile platform of the present invention.

[0036] Figure 4 It is an enlarged structural schematic diagram of the nozzle part in the present invention.

[0037] Figure 5 It is a schematic diagram of the soil tank structure of the present invention.

[0038] Figure 6 It is a schematic diagram of the structure of the soil making mechanism in the present invention.

[0039] Figure 7 It is a structural schematic diagram of the soil making mechanism of the present invention from another angle.

[0040] Figure 8 It is a schematic diagram of the connection between the moving plate and the hydraulic rod in the present invention.

[0041] Fig. 9 It is a system block diagram of the in-situ fluidic system of the present invention.

[0042] In the figure, 1, frame; 11, door; 12, side sliding door; 13, water tank; 14, hydraulic box; 15, electric control box; 16, moving plate; 17, hydraulic rod; 2, moving platform; 21, outrigger; 22, X-axis slide rail; 221, flange; 23, X-axis slider; 24, rack; 25, Y-axis slide rail; 26, Y-axis slider; 27, Z-axis slide rail; 28, gear; 29, second screw rod assembly; 3, soil trough box; 31, perspective window; 32, permeable partition; 33, drainage hole; 4, nozzle; 41, sensor; 42, water inlet pipe; 5, soil making mechanism; 51, walking frame; 52, walking roller; 53, horizontal slide rail; 54, compaction telescopic rod; 55, leveling plate; 6, first nozzle angle adjustment mechanism; 7, second nozzle angle adjustment mechanism. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the preferred embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" 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 mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0050] Example 1

[0051] like Figures 1 to 8 As shown, an in-situ jet experiment device is provided. The in-situ jet experiment device in this embodiment is configured as a detachable mobile jet device. It is convenient to make corresponding adjustments according to the jet experiments in different locations, is not restricted by the site, and is not restricted by the water and electricity in a fixed location. It realizes the effect of "moving and using", which greatly improves the flexibility of the experiment. In addition, when a component in the device is damaged, it can be disassembled and replaced in time, with low maintenance cost, and can avoid the continuity of the experiment and the reliability of the data caused by long-term downtime.

[0052] The present invention integrates different functional modules such as mobile platform 2, electromechanical cabinet, hydraulic system and control system into the same frame 1 through reasonable design and integration. The core idea of ​​the system is to organically integrate mechanical, electrical, hydraulic and control technologies to achieve better performance and precision through efficient collaborative work. Specifically, mobile platform 2 is responsible for performing physical displacement and motion tasks, providing precise position control and a stable operating platform. The electromechanical cabinet integrates the electrical control system, which can supply power, process signals and monitor each subsystem in real time. The hydraulic system is used to provide efficient power support to ensure that the system can maintain stable operation when carrying heavy objects or performing high-load tasks. The control system centrally controls each module through algorithms and software platforms to ensure coordination between different systems to achieve the best working state. This integrated design not only saves space and reduces the complexity of the system, but also effectively improves the reliability, precision and efficiency of the system. In modern manufacturing, automated production and precision operation, the technical application of electromechanical and hydraulic control integration is particularly important, and can provide strong technical support for various high-precision and high-load tasks.

[0053] In this embodiment, the in-situ jet experiment device includes a frame 1, a jet mechanism, a soil trough box 3 and a soil making mechanism 5. The jet mechanism is detachably fixed in the frame 1 by bolts. The soil making mechanism 5 is arranged at the upper end of the soil trough box 3 and is connected to the soil trough box 3 by horizontal slide rails 53 arranged on both sides of the soil trough box 3. The soil trough box 3 is arranged within the jetting movement range of the jet mechanism.

[0054] In this embodiment, the frame 1 includes an I-beam frame, a door 11, a side sliding door 12, an electric control box 15, a water tank 13, a hydraulic box 14, a hydraulic rod 17 and a mobile plate 16, which work together to provide efficient power support and flexible operation functions. The electric control box 15 provides power support for the entire experimental device, ensures the stable operation of the system and controls the electrical operation of each subsystem. The water tank 13 is responsible for providing the water source required by the soil trough box 3 and the jet nozzle 4, ensuring a stable supply of water flow to meet different experimental requirements. The hydraulic system provides a driving force for the soil trough box 3, so that it can be separated from the frame system and moved to an external site for soil sample preparation. After the soil sample preparation is completed, the hydraulic system returns the soil trough box 3 to the experimental position through the return function of the mobile plate 16. The entire frame 1 greatly improves the convenience of operation and the efficiency of experimental preparation through precise electrical control and flexible hydraulic drive, ensuring that the experimental process is carried out efficiently and stably.

[0055] The jet mechanism includes a nozzle 4 and a mobile platform 2. The mobile platform 2 includes a leg 21, an X-axis slide rail 22, an X-axis slider 23, a Y-axis slide rail 25, a Y-axis slider 26, a Z-axis slide rail 27 and a Z-axis slider. The function of the mobile platform 2 is to achieve accurate positioning of the jet nozzle 4 and real-time monitoring of experimental data. The leg 21 is fixedly connected to the bottom of the frame 1 by bolts to ensure the stability of the mobile platform 2. The X-axis slide rail 22, the Y-axis slide rail 25 and the Z-axis slide rail 27 accurately control the three-dimensional movement of the nozzle 4 in space, wherein the Z-axis slide rail 27 can achieve a wide range of adjustment and fine adjustment in this direction through the leg 21. The leg 21 is an adjustable leg 21, including a fixed leg 21 and a mobile leg 21. The bottom of the fixed leg 21 is fixed on the frame 1. The mobile leg 21 is sleeved on the fixed leg 21. The outside of the fixed leg 21 is provided with a plurality of limit holes arranged in a matrix. The movable leg 21 is provided with an elastic limiting column corresponding to the size of the limiting hole.

[0056] The displacement in each direction is realized by driving the gears 28 or the screw rods of each part to rotate through the motors of each slide rail axis. The motor on the X-axis slide rail 22 realizes its displacement in the X direction by controlling the rotation of the gear 28. Specifically, the legs 21 are arranged in a matrix of four. The X-axis slide rail 22 includes two groups arranged in parallel. Each group of X-axis slide rails 22 is arranged as two parallel ones. The Y-axis slide rail 25 is arranged as two parallel ones arranged up and down. The two slide rails connect the two groups of X-axis slide rails 22 through the X-axis slider 23. The Z-axis slide rail 27 is arranged vertically and connected to the two Y-axis slide rails 25 through the Y-axis slider 26. A rack 24 parallel to the X-axis slide rail 22 is arranged in the middle position of the two X-axis slide rails 22. One end of the Y-axis slider 26 is connected to a first drive motor. The output end of the first drive motor is provided with a gear 28 meshing with the rack 24. The first drive motor drives the gear 28 to move horizontally on the rack 24 and then drives the Y-axis slide rail 25 to move horizontally on the X-axis slide rail 22. A first screw assembly is provided at the center of the two Y-axis slide rails 25. The Y-axis slider 26 is connected to the first screw assembly. The first screw assembly rotates to drive the Y-axis slider 26 to move, thereby driving the Z-axis slide rail 27 connected to the Y-axis slider 26 to move. A second screw assembly 29 is provided on the Z-axis slide rail 27. The Z-axis slider is connected to the second screw assembly 29. The second screw assembly 29 rotates to drive the Z-axis slider to move up and down, thereby driving the nozzle 4 to move up and down.

[0057] Moreover, in this embodiment, the Y-axis slide rail 25 is connected to the X-axis slide rail 22 through the X-axis slide rail 22. The Z-axis slide rail 27 is connected to the Y-axis slide rail 25 through the Y-axis slider 26. The nozzle 4 is connected to the Z-axis through the Z-axis slider. The entire mobile platform 2 forms a step-by-step reaction force structure, which effectively distributes the local force generated by the nozzle 4 to the entire mobile platform 2, reduces the risk of failure, and increases the life of the device. Through the reaction force structure, the reaction force at the nozzle 4 is changed from being offset by only a small part of the nozzle 4 structure to being transmitted to the entire frame for offset.

[0058] In order to further meet the multi-degree-of-freedom adjustment of the nozzle 4, a first nozzle angle adjustment mechanism 6 and a second nozzle angle adjustment mechanism 7 are provided on the nozzle 4. The first nozzle angle adjustment mechanism 6 is provided on the Z-axis slider. The first nozzle angle adjustment mechanism 6 drives the nozzle 4 to swing left and right in the horizontal plane of the X-axis slide rail 22 and the Y-axis slide rail 25. The second nozzle angle adjustment mechanism 7 is provided to adjust the forward and backward swing of the nozzle 4. The first nozzle angle adjustment mechanism 6 includes a second drive motor. The output shaft of the second drive motor is connected to one end of the cross frame. The rotation of the second drive motor drives the cross frame to rotate, thereby realizing the left and right swing of the nozzle 4. The second nozzle angle adjustment mechanism 7 is provided as a third drive motor. The rotation of the third drive motor drives the connecting frame to rotate, thereby realizing the forward and backward swing of the nozzle 4.

[0059] The multi-degree-of-freedom control of the nozzle 4 can meet the precise positioning requirements of complex experiments. The nozzle 4 can be flexibly adjusted through the slide rail system to ensure the accuracy of the jet. The sensor 41 following the nozzle 4 monitors the various parameters of the nozzle 4 (such as flow rate, flow rate, injection angle, reaction force, etc.) in real time, and feeds the data back to the control module to ensure that the data during the experiment is accurate and reliable. The mobile platform 2 provides high flexibility and high precision support for the jet experiment through precise control and real-time monitoring, which significantly improves the accuracy and repeatability of the experiment.

[0060] In order to avoid the influence of the incoming water on the nozzle 4, the water inlet pipe 42 is configured as an arc structure to ensure that the direction of the incoming water flow is on the central axis of the nozzle 4.

[0061] In this embodiment, the X-axis slide rail 22 is detachably connected to the leg 21 through the flange 221. The flange 221 can be quickly disassembled and assembled, greatly improving work efficiency. In addition, the design of the flange 221 allows the torque of the force of the entire frame to be changed from the entire X-axis slide rail 22 to the distance from the action point to the flange 221, reducing the torque and reducing damage to the frame.

[0062] A movable plate 16 is provided at the bottom of the frame 1. One end of the movable plate 16 is connected to the frame 1 through a hydraulic rod 17, and the soil trough box 3 is arranged on the movable plate 16. The movement of the movable plate 16 is achieved by the extension and retraction of the hydraulic rod 17, thereby achieving the entry or exit of the soil trough box 3.

[0063] like Figure 5 As shown, the soil trough box 3 is configured as a rectangular frame, including an outer frame, a water-permeable baffle 32, and a water discharge inlet 33. A perspective window 31 is provided in front of the outer frame, and observers can observe and record experiments through the outer perspective window 31.

[0064] The bottom of the soil trough box 3 is provided with a horizontally arranged permeable partition 32 spaced apart from the bottom plate of the soil trough box 3. The permeable partition 32 is provided with a plurality of permeable holes arranged in a matrix at a spacing distance. The rear bottom of the soil trough box 3 is provided with a water discharge inlet 33. The soil trough box 3 in this embodiment has a flexible structural design and can be adjusted according to different experimental requirements. The soil samples and sand and gravel will be placed evenly on the upper and lower sides of the permeable partition 32 in sequence, and the water discharge inlet is used to guide the water flow from the bottom of the permeable partition 32 into the soil trough box 3. By adjusting the water flow, it is ensured that the soil sample meets the preset experimental requirements. The observer can observe and record the experiment through the external perspective window 31. When the soil sample conditions in the soil trough box 3 meet the experimental standards, the entire soil trough box 3 can be flexibly moved to the designated position for experimental operation as needed. In order to facilitate the movement of the soil trough box 3, a rotating wheel is provided at the bottom of the soil trough box 3, and the movable soil trough box 3 greatly reduces the difficulty of soil making. Furthermore, during the use of the two-layer soil tank box 3, the soil sample is placed on the water-permeable partition plate 32, and water is slowly introduced into the lower part. Such a structural design makes the soil sample saturated more evenly.

[0065] In this embodiment, the upper ends of the inner walls on both sides of the soil trough box 3 are provided with horizontal slide rails 34, and the soil making mechanism 5 is provided at the upper end of the soil trough box 3, and is connected to the soil trough box 3 through the horizontal slide rails 34 provided on both sides of the soil trough box 3. The soil making mechanism 5 includes a traveling frame 51, and traveling rollers 52 are provided on both sides of the traveling frame 51, and the traveling rollers 52 are driven by a motor to move on the horizontal slide rails 34. Two scraping tracks 53 arranged parallel to the long sides of the traveling frame 51 are provided on the traveling frame 51, and the scraping tracks 53 are connected to the compacting telescopic rod 54 through the scraping rollers, and a screed plate 55 is provided at the bottom of the compacting telescopic rod 54, and a scraper perpendicular to the screed plate 55 is provided on one side of the screed plate 55. Through the setting of the soil making mechanism 5, layered soil making in the soil trough box 3 is realized, and the accuracy of the in-situ soil is improved.

[0066] The motor drives the traveling frame 51 to move, driving the lower end screed plate 55 to move, and the compacting telescopic rod 54 adjusts the up and down movement of the screed plate 55. The two front and rear compacting telescopic rods 54 are set, and the rear scraper can level the soil sample in the soil trough box 3 when the front end of the screed plate 55 is tilted by adjusting the height of the two compacting telescopic rods 54, and then the screed plate 55 moves up and down to achieve the compaction of the soil sample. The two links of leveling and compacting can realize the preparation of the soil sample required for the experiment.

[0067] The working process of the in-situ jet experiment device in this embodiment is as follows:

[0068] 1. Soil making process and preparation before experiment:

[0069] The prepared soil sample is placed in the soil trough box 3. During the process of preparing the soil sample, each layer of the soil sample is leveled by the soil making mechanism 5, and water is injected from the water inlet and outlet holes 33 at the bottom of the soil trough box 3. After a single layer is saturated with water, the next layer is leveled and water is injected to prepare the soil in layers. The soil sample is further compacted by the soil making mechanism 5 to obtain a soil sample that meets the conditions required for the experiment.

[0070] 2. Adjustment of the position of the soil trough box 3 and movement of the nozzle 4:

[0071] After the soil sample preparation is completed, the soil trough box 3 is carefully moved to the mobile plate 16. The hydraulic system provides a steady propulsion force for the soil trough box 3, moving it to the appropriate position and fixing it. At this time, the soil trough box 3 works in conjunction with the mobile platform 2. The X-axis slide rail 22, Y-axis slide rail 25, and Z-axis slide rail 27 system of the mobile platform 2 enable the nozzle 4 to move freely and accurately in three directions, ensuring that the nozzle 4 can be accurately aligned with the soil trough box 3. This adjustment process uses an automated control system for precise positioning to ensure that the nozzle 4 remains stable during the experiment and can implement jets in different areas. Specifically, if you want the nozzle to jet at an angle of 15°, then set the "angle" in the code instruction to 15° and combine the algorithm and the coordinates of the point to be jetted to derive the coordinates of the nozzle in the x, y, and z directions, thereby achieving precise positioning.

[0072] 3. Experimental operation and jet process:

[0073] After all the preparations are completed, the two side sliding doors 12 are closed and the frame 1 is closed to form a sealed experimental environment. The experimenter observes the changes in the soil trough box 3 through the perspective window 31 in front of the soil trough box 3, and records the experimental data and on-site conditions in real time. The nozzle 4 is precisely adjusted by swinging left and right and forward and backward, and the jet experiment begins. During the jet process, the key parameters of the nozzle 4, such as the flow rate, flow rate, and injection angle, will have an important impact on the experimental results. Therefore, the rear end of the nozzle 4 is equipped with a high-precision sensor to monitor and collect various data of the nozzle 4 in real time, such as flow rate, pressure, injection angle, etc. These data will be transmitted to the monitoring personnel at the rear through the data acquisition system for analysis to ensure the accuracy and real-time nature of the experimental data.

[0074] 4. Data feedback and monitoring:

[0075] The data collected by the sensor is fed back to the monitoring system in real time, and the experimenter can quickly adjust the parameters of the nozzle 4 or other experimental settings during the experiment to cope with different soil sample reactions and jet characteristics. Through the data processing system, the monitoring personnel can evaluate the progress of the experiment, the status of the nozzle 4 and the soil sample reaction in real time to ensure that the experiment proceeds smoothly according to the predetermined plan. At the same time, all experimental data will be automatically recorded and formed into an experimental report for subsequent analysis.

[0076] 5. End of the experiment and subsequent processing:

[0077] After the experiment is completed, the soil trough box 3 is smoothly pushed out of the frame 1 by the hydraulic rod 17 and enters the subsequent processing and cleaning stage. The hydraulic system ensures that the soil trough box 3 will not tilt or be damaged during the pushing process, ensuring the safety and integrity of the equipment. In the subsequent work, the soil samples in the soil trough box 3 can be processed or analyzed again, or removed and cleaned to prepare for the next experiment. In addition, all experimental equipment and data acquisition systems will be fully inspected and maintained to ensure that the next experiment can proceed smoothly.

[0078] The working process combines precise mechanical adjustment, automatic control and real-time data monitoring to ensure the efficiency, flexibility and reliability of the jet experiment. At the same time, the modular design and intelligent monitoring system of the experimental equipment greatly improve the adaptability and fault tolerance of the experimental process, enabling it to operate stably in a changing experimental environment.

[0079] Example 2

[0080] like Fig. 9As shown, an in-situ jet experiment system. It includes the in-situ jet experiment device of embodiment 1, and also includes a control module and a nozzle moving module connected to the control module, a nozzle injection module, a nozzle data acquisition module, a soil trough box input and output module, a data processing module and a data storage module. The nozzle moving module controls the movement of the nozzle 4 on the X-axis slide 22, the Y-axis slide 25, and the Z-axis slide 27, as well as the left and right, front and back swings to meet the injection needs of different positions. The injection module includes a water pump and a pipeline. The nozzle 4 is connected to the water pump through a pipeline for supplying water flow to the nozzle 4 and regulating the flow rate. The nozzle 4 data acquisition module includes a flow sensor, a flow velocity sensor, a pressure sensor, an angle sensor and a position sensor, which are used to obtain the flow, flow velocity, pressure, angle and position data at the nozzle 4, and transmit these signals to the nozzle data acquisition module. The nozzle data acquisition module transmits the obtained data to the data processing module. A finite element analysis (FEM) system is provided in the data processing module. The FEM system performs efficient simulation calculations based on the input experimental related data to generate digital simulation results closely related to the experiment. Based on the in-depth analysis of the numerical results, the experimental device parameters are automatically adjusted to make the experimental results more in line with expectations. According to the new experimental results, finite element analysis is performed again to further adjust the physical model parameters. This cycle is repeated until the experimental results meet the expected requirements. This closed-loop mechanism achieves a high degree of coordination and interaction between the digital model and the physical model, which not only promotes the optimization of experimental data, but also realizes the efficient application of digital twin technology, and completes the two-way adjustment and continuous optimization between the digital model and the physical model. The input and output module of the soil trough box 3 includes a hydraulic system. The movement of the movable plate 16 is controlled by the hydraulic system to move the soil trough box 3 into the injection movement range of the jet mechanism. The data storage module is used to store the data obtained during the experiment and generate an experimental report for subsequent analysis.

[0081] Specifically, a mathematical model of the jet experiment is established, a simulation design is made, a finite element model is built, the whole is gridded, the specific conditions of each position are subdivided, and an in-depth analysis is conducted on the experimental simulation results based on the grid model (the working conditions are simulated by software, the model is run, and the theoretical data of the model is obtained). The in-depth analysis data of the experimental working conditions is calculated by computer, and the data measured by the experimental sensor and the finite element model data run by the software are compared. The theoretical data of the model is used as a reference, and the experimental parameters are adjusted accordingly. Then, the experiment is conducted based on the model data. Finally, through continuous debugging of the two, the most ideal experiment is carried out.

[0082] Example 3

[0083] An in-situ jet experiment method, comprising the in-situ jet experiment device of embodiment 1 and the in-situ jet experiment system of embodiment 2, comprises the following steps:

[0084] The equipment is powered on and started, and the soil trough box 3 prepares soil samples. During the soil sample preparation process, each layer of soil sample is leveled by the soil making mechanism 5, and water is injected from the water inlet and outlet holes 33 at the bottom of the soil trough box 3. After a single layer is saturated with water, the next layer is leveled and water is injected to prepare the soil in layers.

[0085] After the soil sample is prepared, it is transported to the mobile platform 2 for jetting operation.

[0086] The mobile platform 2 performs a self-check, enters a standby state, and adjusts the jet nozzle 4 to reach a specified height.

[0087] The water pump is started to control the velocity and flow rate of the jet from the nozzle 4. The computer controls the corresponding motor to rotate, driving the nozzle 4 to move, thereby achieving flushing and breaking of the soil at different positions.

[0088] The computer acquires the data collected by the sensor, displays it in real time, and analyzes the collected data.

[0089] The damage situation of the soil in the soil trough box 3 is transmitted to the computer in real time through video, so as to observe the damage law of the soil in the soil trough box 3.

[0090] The reaction force of nozzle 4 is collected and analyzed, and the soil destruction effects under different reaction forces are compared.

[0091] Call the data fitting program to give the soil deformation and reaction force curve.

[0092] Change input variables, such as jet velocity; adjust the angle of the nozzle 4 to re-jet the soil in the soil trough box 3; the scale model in the device system and the virtual finite element model in the computer, the above two models need to be generated by the software during the experiment or after the experimental conditions are determined, combined with the actual situation, and the two models are run simultaneously after generation; use the regression analysis algorithm to compare and verify the physical model results with the numerical calculation results; finally give the optimized physical model and numerical model comparison results, and finally build an accurate digital twin model.

[0093] The above embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An in-situ jet experiment device, characterized in that: The in-situ jet experiment device is configured as a detachable and movable jet device, which can be adaptively adjusted according to different experimental positions; it comprises a frame (1), a jet mechanism, a soil trough box (3) and a soil making mechanism (5); the jet mechanism is detachably fixed in the frame (1); the soil trough box (3) is arranged within the jetting movement range of the jet mechanism and can be moved out of the frame (1); the soil making mechanism (5) is arranged at the upper end of the soil trough box (3) and is connected to the soil trough box (3) via horizontal slide rails (34) arranged on both sides of the soil trough box (3); the jet mechanism comprises a nozzle (4) and a mobile platform (2); the mobile platform (2) comprises a support leg (21), an X-axis slide rail (22), an X-axis slider (23); and a plurality of support legs (21). 3), a Y-axis slide rail (25), a Y-axis slider (26), a Z-axis slide rail (27) and a Z-axis slider, the leg (21) is vertically fixed on the bottom surface of the frame (1), the X-axis slide rail (22) is arranged at the upper end of the leg (21) and is perpendicular to the leg (21), the Y-axis slide rail (25) is connected to the X-axis slide rail (22) through the X-axis slider (23), the Z-axis slide rail (27) is connected to the Y-axis slide rail (25) through the Y-axis slider (26), and the nozzle (4) is connected to the Z-axis through the Z-axis slider; a sensor (41) is arranged in the nozzle (4) for obtaining the position of the nozzle (4) and the real-time data of the nozzle (4), and the water inlet pipe (42) of the nozzle (4) is arranged in an arc shape.

2. The in-situ fluidic experimental device according to claim 1, characterized in that: The frame (1) comprises an I-beam frame, a door (11), a side sliding door (12), an electric control box (15), a water tank (13), a hydraulic box (14), a hydraulic rod (17) and a movable plate (16); the door (11) is arranged at the front end of the I-beam frame, the side sliding door (12) is arranged at one side of the I-beam frame, and the movement of the side sliding door (11) facilitates the entry and exit of the soil trough box (3); the electric control box (15), the water tank (13) and the hydraulic box (14) are arranged inside the I-beam frame and close to the side; the hydraulic rod (17) is connected to the hydraulic box (14), and the output end of the hydraulic rod (17) is connected to the movable plate (16) to drive the horizontal movement of the movable plate (16), thereby moving the soil trough box (3) arranged on the movable plate (16) to a specified position.

3. The in-situ fluidic experimental device according to claim 1, characterized in that: The legs (21) are arranged in a matrix with four rails, the X-axis rails (22) include two groups arranged in parallel, each group of X-axis rails (22) is arranged with two rails arranged in parallel, the Y-axis rails (25) are arranged with two rails arranged in parallel up and down, and the two rails connect the two groups of X-axis rails (22) through an X-axis slider (23); the Z-axis rail (27) is arranged vertically and connected to the two Y-axis rails (25) through a Y-axis slider (26).

4. The in-situ fluidic experimental device according to claim 3, characterized in that: A rack (24) parallel to the X-axis slide rails (22) is arranged at the middle position of the two X-axis slide rails (22); one end of the Y-axis slider (26) is connected to a first drive motor; an output end of the first drive motor is provided with a gear (28) meshing with the rack (24); the first drive motor drives the gear (28) to move horizontally on the rack (24) and thereby drives the Y-axis slide rail (25) to move horizontally on the X-axis slide rail (22); a first screw rod assembly is arranged at the center of the two Y-axis slide rails (25); the Y-axis slider (26) is connected to the first screw rod assembly; the first screw rod assembly rotates to drive the Y-axis slider (26) to move, thereby driving the Z-axis slide rail (27) connected to the Y-axis slider (26) to move; a second screw rod assembly (29) is arranged on the Z-axis slide rail (27); the Z-axis slider is connected to the second screw rod assembly (29); the second screw rod assembly (29) rotates to drive the Z-axis slider to move up and down, thereby driving the nozzle (4) to move up and down.

5. The in-situ fluidic experimental device according to claim 1, characterized in that: The legs (21) comprise a fixed leg (21) and a movable leg (21); the bottom of the fixed leg (21) is fixed on the frame (1); the movable leg (21) is sleeved on the fixed leg (21); a plurality of limiting holes arranged in a matrix are arranged on the outside of the fixed leg (21); and an elastic limiting column corresponding to the size of the limiting hole is arranged on the movable leg (21).

6. The in-situ fluidic experimental device according to claim 1, characterized in that: A first nozzle angle adjustment mechanism (6) and a second nozzle angle adjustment mechanism (7) are arranged on the nozzle (4); the first nozzle angle adjustment mechanism (6) is arranged as a second drive motor; the output end of the second drive motor is connected to a cross frame; the cross frame is connected to the nozzle (4) via a connecting frame; the second drive motor rotates to drive the nozzle (4) to swing left and right within the horizontal plane of the X-axis slide rail (22) and the Y-axis slide rail (25); the second nozzle angle adjustment mechanism 7 is arranged as a third drive motor; the third drive motor is connected to the connecting frame; the third drive motor rotates to drive the nozzle (4) arranged on the connecting frame to swing back and forth.

7. The in-situ fluidic experimental device according to claim 1, characterized in that: The X-axis slide rail (22) is detachably connected to the support leg (21) via a flange (221); the soil trough box (3) is configured as a rectangular frame, a water-permeable baffle (32) is horizontally arranged at a distance from the bottom plate of the soil trough box (3) at the bottom of the soil trough box (3), and a plurality of water-permeable holes arranged in a matrix at a distance are provided on the water-permeable baffle (32); and a water discharge inlet (33) is provided at the rear bottom end of the soil trough box (3).

8. The in-situ jet experiment device according to claim 1, characterized in that: The soil making mechanism (5) comprises a traveling frame (51), and traveling rollers (52) are arranged on both sides of the traveling frame (51), and the traveling rollers (52) are driven by a motor to move on a horizontal slide rail (34); two scraping tracks (53) arranged parallel to the long side of the traveling frame (51) are arranged on the traveling frame (51), and two compacting telescopic rods (54) are connected to the two scraping tracks (53) through the scraping rollers, and a screed plate (55) is arranged at the bottom of the two compacting telescopic rods (54), and a scraper perpendicular to the screed plate (55) is arranged on one side of the screed plate (55).

9. An in-situ jet flow experimental system, characterized in that: An in-situ jet experiment device comprising any one of claims 1 to 8, further comprising a control module and a nozzle moving module connected to the control module, a nozzle spraying module, a nozzle data acquisition module, a soil tank box input and output module, a data processing module and a data storage module; The nozzle moving module controls the movement of the nozzle (4) on the X-axis slide rail (22), the Y-axis slide rail (25), and the Z-axis slide rail (27) as well as the left-right and front-back swinging to meet the spraying needs at different positions; The injection module comprises a water pump and a pipeline, and the nozzle (4) is connected to the water pump through the pipeline, which is used for supplying water flow to the nozzle (4) and adjusting the flow rate; the nozzle data acquisition module comprises a flow sensor, a flow velocity sensor, a pressure sensor, an angle sensor and a position sensor, which are used for obtaining flow rate, flow velocity, pressure, angle and position data at the nozzle (4), and transmitting these signals to the nozzle data acquisition module, and the nozzle data acquisition module transmits the obtained data to the data processing module, and the data processing module is provided with a finite element analysis system, and the digital model and the physical model are compared by the finite element analysis system, and then the displacement of the nozzle (4) or the injection velocity or injection flow rate and other corresponding physical parameters are adjusted by the control module; the soil trough box input and output module comprises a hydraulic system, and the movement of the movable plate (16) is controlled by the hydraulic system to move the soil trough box (3) into the injection movement range of the jet mechanism; the data storage module is used for storing the data obtained during the experiment and generating an experimental report for subsequent analysis.

10. An in-situ jet experiment method, characterized in that: The in-situ fluidic experimental device according to any one of claims 1 to 8 and the in-situ fluidic experimental system according to claim 9 comprise the following steps: The equipment is powered on and started, and the soil trough box (3) prepares soil samples. During the soil sample preparation process, each layer of soil sample is leveled by the soil preparation mechanism, and then water is injected from the water discharge and inlet holes (33) at the bottom of the soil trough box (3). After a single layer is saturated with water, the next layer is leveled and water is injected to achieve layered soil preparation; After the soil sample is prepared, it is transported to the mobile platform (2) and subjected to jetting operation; The mobile platform (2) performs a self-check, enters a standby state, and adjusts the jet nozzle (4) to a specified height; The water pump is started to control the velocity and flow rate of the jet from the nozzle (4); the computer controls the corresponding motor to rotate, driving the nozzle (4) to move, so as to achieve flushing and breaking of soil at different positions; The computer obtains the data collected by the sensor and displays it in real time, analyzes the collected data and finally builds an accurate digital twin model.

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