A water flow trajectory simulation demonstration device

Abstract

This application provides a water flow trajectory simulation demonstration device, belonging to the field of groundwater dynamics technology. It includes a main tank, an inlet tank, an outlet tank, multiple injection pipes, a water level gauge, and multiple connecting pipes. The main tank has a demonstration tank, a transparent plate, and a sand body. The inlet and outlet tanks are installed at opposite ends of the main tank, each with its own inlet and outlet pipes; the outlet tank is lower than the inlet tank. Multiple injection pipes are arranged vertically at intervals and positioned close to the inlet tank, with one end passing through the transparent plate and connecting to the demonstration tank. The water level gauge has multiple vertically arranged indicator tubes and multiple connection ports at its lower end. Both ends of the multiple connecting pipes are connected to the bottom of the demonstration tank and the connection ports, respectively. The connection points between the multiple connecting pipes and the transparent plate are arranged horizontally at intervals. The water flow trajectory simulation demonstration device provided by this application achieves multi-point synchronous water level monitoring and improves the accuracy of water flow trajectory simulation.

Description

Technical Field

[0001] This application belongs to the field of groundwater dynamics technology, and more specifically, relates to a water flow trajectory simulation demonstration device. Background Technology

[0002] In the fields of hydraulic engineering and hydrogeology, it is often necessary to observe water flow traces using simulation devices to visually demonstrate the seepage patterns in porous media. Existing water flow trace demonstration devices mostly employ a decentralized structure, with the inlet and outlet systems separated from the demonstration tank. This requires additional complex piping connections, which is not only cumbersome to install but also prone to leaks and water flow disturbances, preventing the formation of a stable seepage field and affecting the accuracy of trace observation. Furthermore, existing devices typically inject tracers at a single point and height, failing to demonstrate water flow traces at different burial depths, resulting in a one-sided demonstration. In addition, water level monitoring often involves direct insertion into the demonstration tank, which easily disturbs the sand body and seepage field, and cannot simultaneously monitor water levels at multiple points, making it difficult to quickly create flow networks. These methods fail to meet the dual requirements of intuitive demonstration and accurate monitoring. Summary of the Invention

[0003] The purpose of this application is to provide a water flow trajectory simulation demonstration device to solve the technical problem that existing groundwater dynamics simulation operations are difficult to meet the requirements of intuitive demonstration and accurate detection.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a water flow trajectory simulation demonstration device, comprising: The main body has a demonstration tank inside and a transparent plate on one side for observation; the demonstration tank is filled with sand. A water inlet tank is installed at one end of the main tank, and the water inlet tank is provided with a water inlet pipe for adding water into the main tank; An outlet tank is installed at the other end of the main tank, and the outlet tank is lower than the inlet tank; the outlet tank is provided with an outlet pipe for discharging water from the main tank; Multiple injection tubes are arranged close to the water inlet tank, and one end of each tube passes through the transparent plate and is connected to the demonstration tank; the multiple injection tubes are arranged vertically at intervals to add tracer into the demonstration tank; The water level gauge has multiple vertically arranged indicator tubes; the lower end of the water level gauge has multiple connection ports that communicate with the indicator tubes. Multiple connecting pipes, one end of which passes through the transparent plate and connects to the bottom of the demonstration tank, and the other end of which is connected to multiple connection ports respectively; the connection positions of the multiple connecting pipes and the transparent plate are arranged horizontally at intervals.

[0005] In one possible implementation, both the inlet tank and the outlet tank have the freedom to move up and down.

[0006] In one possible implementation, mounting blocks are provided at both ends of the main housing, and the mounting blocks are provided with detachable fasteners and vertically arranged sliding grooves; the water inlet tank and the water outlet tank are respectively slidably connected in the two sliding grooves, and the fasteners are used to fix the water inlet tank and the water outlet tank to the mounting blocks.

[0007] In one possible implementation, the mounting block has two spaced-apart mounting plates, and the groove is located between the two mounting plates; each mounting plate has a screw hole, and the fastener includes a screw rod and a tightening part fixedly installed at one end of the screw rod and a pressure plate fixedly installed at the other end of the screw rod. The screw rod is threaded into the screw hole, and the pressure plate is located in the groove, while the tightening part is located outside the mounting block.

[0008] In one possible implementation, the transparent plate has a plurality of first through holes arranged vertically at intervals, and the first through holes are arranged close to the water inlet tank; the water flow trajectory simulation demonstration device also includes a liquid storage box for holding tracer, the liquid storage box being higher than the first through holes; the two ends of the injection tube are respectively connected to the liquid storage box and the first through holes; the injection tube is provided with a valve for controlling the on / off state.

[0009] In one possible implementation, a spare hole is provided at one end of the injection tube connected to the first through hole, and a removable plug is provided on the spare hole.

[0010] In one possible implementation, the lower side of the transparent plate has a plurality of second through holes, and the plurality of second through holes are arranged horizontally at intervals; one end of the plurality of connecting tubes is respectively connected to the plurality of second through holes.

[0011] In one possible implementation, connection holes are provided on both sides of the bottom of the main body, and one end of the water inlet pipe and the water outlet pipe are respectively connected to the two connection holes.

[0012] In one possible implementation, the water level gauge is provided with a measuring scale and multiple markings, the measuring scale is arranged parallel to the indicator tube, and the multiple markings correspond one-to-one with the multiple indicator tubes.

[0013] In one possible implementation, the water flow trajectory simulation demonstration device further includes a support frame, on which the main tank, the inlet tank, and the outlet tank are all mounted.

[0014] The beneficial effects of the water flow trajectory simulation demonstration device provided in this application are as follows: Compared with the prior art, the water flow trajectory simulation demonstration device of this application consists of a main tank, an inlet tank, an outlet tank, multiple injection pipes, a water level gauge, and multiple connecting pipes. These components work together to overcome many shortcomings of the prior art. The main tank, as the core load-bearing component, has an internal demonstration tank filled with sand to simulate a natural porous media environment. A transparent plate on one side of the main tank provides a direct window for observing the water flow trajectory, allowing real-time observation of the internal flow pattern without disassembling the device.

[0015] The inlet tank and outlet tank are installed at both ends of the main tank, with the outlet tank lower than the inlet tank. This staggered arrangement eliminates the need for complex additional piping and allows for the formation of a stable pressure difference by utilizing the water level difference between the two tanks. This solves the problems of complicated piping connections, easy leakage, and large water flow disturbance in decentralized devices, thereby quickly forming a stable seepage field in the sand pores of the demonstration tank and ensuring the accuracy of trace observation.

[0016] Multiple injection tubes are arranged close to the water inlet tank, with one end passing through a transparent plate and connecting to the demonstration tank. They are also arranged vertically at intervals. Compared with the existing device's single-point, single-height tracer injection method, this design can inject tracers into the demonstration tank from different heights, clearly showing the water flow traces at different burial depths.

[0017] The water level gauge is equipped with multiple vertically arranged indicator tubes. The lower connection port is connected to the bottom of the demonstration tank via multiple connecting pipes. The connection points of the connecting pipes and the transparent plate are arranged horizontally at intervals. Water level monitoring is achieved using the principle of communicating vessels, eliminating the need to directly insert the monitoring components into the demonstration tank and avoiding disturbance to the sand body and seepage field. Simultaneously, it can monitor the water level at multiple points within the demonstration tank, facilitating rapid flow network mapping and meeting the dual requirements of intuitive demonstration and accurate monitoring.

[0018] In practice, firstly, sand is uniformly filled into the demonstration tank of the main chamber, ensuring that the sand is free of stratification and voids to simulate a real porous media environment. Secondly, the sealing of each component connection is checked to ensure that there are no leaks in the connection between the injection pipe, connecting pipe, and transparent plate. Then, water is injected into the demonstration tank through the inlet pipe on the inlet tank, while the outlet pipe on the outlet tank is opened to drain water. The water level difference between the inlet and outlet tanks is used to construct and maintain a stable seepage field in the sand pores. After the seepage field stabilizes and reaches dynamic equilibrium, tracer is injected into the injection pipe. Depending on the experimental requirements, tracer can be injected simultaneously or separately through injection pipes at different heights. The tracer will move along the seepage direction with the water flow in the sand pores, forming clear water flow traces. The staff can observe the trace morphology at different burial depths in real time through the transparent plate. Finally, the water level data at different horizontal points in the demonstration tank is read through multiple indicator tubes on the water level gauge. Combined with the observed water flow traces, a flow network is quickly drawn to complete the demonstration and monitoring of the seepage law.

[0019] In this way, the integrated design combines the inlet and outlet drainage system with the demonstration tank and water level monitoring system, eliminating complex external connecting pipes and facilitating installation. Simultaneously, the height difference between the inlet and outlet tanks creates a stable pressure differential, effectively preventing pipe leaks and water flow disturbance. This allows for the rapid construction of a stable seepage field, improving the accuracy of water flow trajectory simulation. Multiple vertically spaced injection pipes enable multi-height, multi-point tracer injection, clearly displaying water flow trajectories at different burial depths, making it more suitable for demonstrations and scientific research experiments studying seepage patterns at different burial depths. The use of connecting pipes between the water level gauge and the demonstration tank enables non-contact, multi-point synchronous water level monitoring. This avoids disturbance to the sand body and seepage field while quickly acquiring water level data from multiple points, facilitating flow network mapping and meeting the dual needs of intuitive demonstration and precise monitoring. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of the water flow trajectory simulation demonstration device provided in the embodiments of this application; Figure 2 A schematic diagram showing the connection of the injection tube, storage box, and main body provided in an embodiment of this application; Figure 3 A schematic diagram showing the connection of the support frame, main tank, inlet tank, and outlet tank provided in the embodiments of this application.

[0022] The following are the labeling elements in the figure: 10. Main box body; 11. Demonstration tank; 12. Transparent panel; 13. Sand body; 14. First through hole; 15. Second through hole; 16. Connecting hole; 20. Water inlet tank; 21. Water inlet pipe; 22. Mounting block; 23. Slide groove; 24. Mounting plate; 30. Water outlet tank; 31. Water outlet pipe; 32. Fastener; 33. Screw; 34. Tightening part; 35. Pressure plate; 40. Injection tube; 41. Tracer; 42. Storage container; 43. Valve; 44. Spare port; 45. Plug; 50. Water level gauge; 51. Indicator tube; 52. Connection port; 53. Measuring tape; 54. Marking; 60. Connecting pipe; 70. Support frame. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Please see Figures 1 to 3The water flow trajectory simulation demonstration device provided in this application will now be described. A water flow trajectory simulation demonstration device includes a main tank 10, an inlet tank 20, an outlet tank 30, multiple injection pipes 40, a water level gauge 50, and multiple connecting pipes 60. The main tank 10 has an internal demonstration tank 11, and one side has a transparent plate 12 for observation. The demonstration tank 11 is filled with sand 13. The inlet tank 20 is installed at one end of the main tank 10, and has an inlet pipe 21 for adding water into the main tank 10. The outlet tank 30 is installed at the other end of the main tank 10, and is lower than the inlet tank 20. The outlet tank 30 has a discharge port for discharging water from the main tank 10. The water outlet pipe 31 is provided; multiple injection pipes 40 are arranged near the water inlet tank 20, and one end of each pipe passes through the transparent plate 12 and is connected to the demonstration tank 11; the multiple injection pipes 40 are arranged vertically at intervals to add tracer 41 into the demonstration tank 11; the water level gauge 50 is provided with multiple vertically arranged indicator tubes 51; the lower end of the water level gauge 50 is provided with multiple connection ports 52 that are connected to the indicator tubes 51; one end of multiple connecting pipes 60 passes through the transparent plate 12 and is connected to the bottom of the demonstration tank 11, and the other end is connected to multiple connection ports 52 respectively; the connection positions of the multiple connecting pipes 60 and the transparent plate 12 are arranged horizontally at intervals.

[0028] The water flow trajectory simulation demonstration device provided in this application, compared with the prior art, consists of a main tank 10, an inlet tank 20, an outlet tank 30, multiple injection pipes 40, a water level gauge 50, and multiple connecting pipes 60. These components work together to overcome many shortcomings of the prior art. The main tank 10 serves as the core load-bearing component, and its internal demonstration tank 11 is filled with sand 13 to simulate a natural porous media environment. The transparent plate 12 on one side of the main tank 10 provides a direct window for observing the water flow trajectory, allowing real-time observation of the internal flow pattern without disassembling the device.

[0029] The inlet tank 20 and the outlet tank 30 are respectively installed at both ends of the main tank 10, and the outlet tank 30 is lower than the inlet tank 20. This staggered arrangement eliminates the need for additional complex piping and can utilize the water level difference between the two to form a stable pressure difference. This solves the problems of complicated piping connections, easy leakage, and large water flow disturbance in decentralized devices. Furthermore, it quickly forms a stable seepage field in the pores of the sand body 13 in the demonstration tank 11, ensuring the accuracy of trace observation.

[0030] Multiple injection tubes 40 are arranged close to the water inlet tank 20, with one end passing through the transparent plate 12 and connecting to the demonstration tank 11. They are also arranged vertically at intervals. Compared with the existing device's single-point, single-height tracer injection method, this design can inject tracer 41 into the demonstration tank 11 from different heights, which can clearly show the water flow traces at different burial depths.

[0031] The water level gauge 50 is equipped with multiple vertically arranged indicator tubes 51. The lower connection port 52 is connected to the bottom of the demonstration tank 11 through multiple connecting pipes 60. The connection positions of the connecting pipes 60 and the transparent plate 12 are arranged horizontally at intervals. Water level monitoring is achieved by using the principle of communicating vessels, eliminating the need to directly insert the monitoring components into the demonstration tank 11 and avoiding disturbance to the sand body 13 and the seepage field. At the same time, the water level height at multiple points in the demonstration tank 11 can be monitored simultaneously, facilitating the rapid drawing of flow networks and meeting the dual requirements of intuitive demonstration and accurate monitoring.

[0032] In specific operation, firstly, sand 13 is evenly filled into the demonstration tank 11 of the main tank 10 to ensure that the sand 13 is free of layering and voids, simulating a real porous media environment; secondly, the sealing of each component connection is checked to ensure that there is no leakage in the connection between the injection pipe 40, the connecting pipe 60 and the transparent plate 12. Then, water is injected into the demonstration tank 11 through the water inlet pipe 21 on the water inlet tank 20, and at the same time, the water outlet pipe 31 on the water outlet tank 30 is opened to drain water. By utilizing the water level difference between the water inlet tank 20 and the water outlet tank 30, a stable seepage field is constructed and maintained in the pores of the sand 13. After the seepage field stabilizes and forms a dynamic equilibrium, tracer 41 is injected into the injection pipe 40. Depending on the experimental requirements, tracer 41 can be injected simultaneously or separately through injection pipes 40 at different heights. The tracer 41 will move along the seepage direction with the water flow in the pores of the sand body 13, forming clear water flow traces. Staff can observe the trace morphology at different burial depths in real time through the transparent plate 12. Finally, the water level height data at different horizontal points in the demonstration tank 11 is read through multiple indicator tubes 51 on the water level gauge 50. Combined with the observed water flow traces, a flow network is quickly drawn to complete the demonstration and monitoring of the seepage law.

[0033] In this way, the integrated design combines the inlet and outlet drainage system with the demonstration tank 11 and the water level monitoring system, eliminating complex external connection pipelines and facilitating installation. Simultaneously, the height difference between the inlet and outlet tanks 30 creates a stable pressure differential, effectively preventing pipeline leaks and water flow disturbances. This allows for the rapid construction of a stable seepage field, improving the accuracy of water flow trajectory simulation. Multiple vertically spaced injection pipes 40 enable multi-height, multi-point injection of tracer 41, clearly displaying water flow trajectories at different burial depths, making it more suitable for demonstrations and scientific research experiments studying seepage patterns at different burial depths. The use of connecting pipes 60 to connect the water level gauge 50 to the demonstration tank 11 enables contactless, multi-point synchronous water level monitoring. This avoids disturbance to the sand body 13 and the seepage field while quickly acquiring water level data from multiple points, facilitating flow network mapping and meeting the dual needs of intuitive demonstration and precise monitoring.

[0034] Please see Figure 1 and Figure 3As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, both the inlet tank 20 and the outlet tank 30 have the freedom to move vertically, meaning that their installation height can be adjusted vertically to adapt to different experimental needs. During operation, the vertical positions of the inlet tank 20 and the outlet tank 30 are adjusted according to the hydraulic gradient of the required seepage field, and fixed after reaching the preset height. Water is then injected through the inlet pipe 21 and drained through the outlet pipe 31, using the adjusted water level difference between the two to form a stable seepage field. In this way, the water level difference between the inlet and outlet tanks 30 can be flexibly changed, thereby adjusting the seepage velocity and hydraulic gradient within the demonstration tank 11. This solves the problem of existing devices having a fixed water level difference and being unable to simulate different seepage conditions. Water flow trajectory demonstrations under various working conditions can be completed without replacing the device, improving the versatility and practicality of the device.

[0035] Please see Figure 1 and Figure 3 As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, the main housing 10 is provided with mounting blocks 22 at both ends for installing and adjusting the height of the inlet tank 20 and the outlet tank 30. The mounting blocks 22 are provided with vertically arranged sliding grooves 23 and detachably connected fasteners 32. The sliding grooves 23 provide guidance for the up and down movement of the inlet tank 20 and the outlet tank 30, and the fasteners 32 are used to fix the positions of the two.

[0036] During operation, first embed the inlet tank 20 and outlet tank 30 into the corresponding grooves 23 of the mounting blocks 22 at both ends of the main tank 10, so that they can slide smoothly vertically along the grooves 23. According to the hydraulic gradient of the seepage field required for the experiment, move the inlet and outlet tanks 30 up and down to the preset height. After adjusting them to the correct position, tighten the fasteners 32 to firmly fix the inlet tank 20 and outlet tank 30 on the mounting blocks 22 to ensure that their positions are stable. If the height needs to be adjusted later, loosen the fasteners 32 to move them again, and then fix them again after adjustment.

[0037] The cooperation between the slide groove 23 and the fastener 32 enables precise guidance and stable fixation of the water inlet tank 20 and the water outlet tank 30 as they move up and down. The structure is simple and easy to operate. The water level difference between the two can be flexibly adjusted to adapt to different seepage conditions. The detachable fastener 32 facilitates the disassembly, maintenance and repair of the device.

[0038] Please see Figure 1 and Figure 3As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, the mounting block 22 adopts a double mounting plate 24 structure. The two mounting plates 24 are arranged at intervals, forming a vertical groove 23 between them. The groove 23 is used to accommodate the inlet tank 20 and the outlet tank 30, providing stable guidance for their up and down movement. At the same time, the double mounting plate 24 structure can enhance the structural strength of the mounting block 22 and prevent the groove 23 from deforming and affecting the smoothness of movement. Each mounting plate 24 is provided with a screw hole, which is adapted to the fastener 32. The fastener 32 consists of a screw 33, a tightening part 34, and a pressure plate 35. The screw 33 is threaded into the screw hole. The pressure plate 35 is fixed at one end of the screw 33 near the groove 23 and located inside the groove 23. The tightening part 34 is fixed at the other end of the screw 33 and extends out of the mounting block 22 for easy operation by the operator.

[0039] During operation, the inlet tank 20 and outlet tank 30 are respectively embedded into the sliding grooves 23 between the double mounting plates 24 of the corresponding mounting blocks 22, allowing them to slide vertically along the sliding grooves 23. After adjusting to the preset height, the screw 34 is rotated to drive the screw 33 to rotate. The screw 33 is pushed inward along the screw hole, pushing the pressure plate 35 to adhere to the side wall of the inlet tank 20 or outlet tank 30. The pressure of the pressure plate 35 achieves a firm fixation between the two. If the height needs to be adjusted, the screw 34 is rotated in the opposite direction, and the screw 33 drives the pressure plate 35 to move backward, releasing the pressure on the inlet tank 20 or outlet tank 30. The inlet tank 20 or outlet tank 30 can then be moved up and down to the new position. The fasteners 32 are tightened again to complete the fixation.

[0040] The double mounting plates 24 cooperate with the sliding groove 23 to ensure that the water inlet tank 20 or the water outlet tank 30 moves smoothly without deviation, improving the adjustment accuracy. The fastener 32, composed of the screw 33, the screwing part 34 and the pressure plate 35, has a simple structure and reliable connection. It achieves tightening and loosening through threaded transmission, which is convenient and labor-saving to operate and has a stable fixing effect. It can effectively prevent the water inlet tank 20 or the water outlet tank 30 from shifting due to water flow impact during the experiment, ensuring the stability of the seepage field. At the same time, the detachable structure of the threaded connection makes it easy to disassemble, replace and maintain the fastener 32. Moreover, the screwing part 34 is located outside the mounting block 22, so the operation can be completed without disassembling other parts.

[0041] Optionally, the mounting block 22 has a U-shaped structure, and its two wing plates are two mounting plates 24.

[0042] Please see Figure 1 and Figure 2As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, the transparent plate 12 has multiple first through holes 14, which are arranged vertically at intervals and adjacent to the water inlet tank 20, for connecting the injection pipe 40 and the demonstration tank 11. The vertically spaced arrangement can adapt to the injection requirements of tracer 41 at different burial depths. The device is also equipped with a liquid storage box 42 for storing tracer 41, and the liquid storage box 42 is installed at a height higher than the first through holes 14, so that the tracer 41 can be injected by gravity without the need for additional power equipment. The two ends of the injection pipe 40 are connected to the liquid storage box 42 and the first through holes 14 respectively, which serves to transport the tracer 41. The valve 43 installed on the pipe can flexibly control the injection of tracer 41.

[0043] During operation, first inject an appropriate amount of tracer 41 into the liquid storage box 42, ensuring that the height of the liquid storage box 42 is higher than the first through hole 14; after a stable seepage field is formed in the demonstration tank 11, open the valve 43 on the corresponding height injection pipe 40 according to the experimental requirements, and the tracer 41 flows into the corresponding burial depth in the demonstration tank 11 along the injection pipe 40 and the first through hole 14 under the action of gravity; when the injection is completed or when it is necessary to pause, close the valve 43.

[0044] The placement of the liquid storage box 42 above the first through hole 14 enables the tracer 41 to be injected by gravity, saving power costs and ensuring smooth injection while avoiding disturbance of the seepage field. The vertically spaced first through holes 14, in conjunction with the injection pipe 40, can accurately inject the tracer 41 into different burial depths, ensuring the demonstration effect of water flow traces at different burial depths. The valve 43 allows for flexible control of the injection timing and dosage, preventing waste of tracer 41 or excessive injection that could affect observation.

[0045] Please see Figure 1 and Figure 2 As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, the end of the injection pipe 40 connected to the first through hole 14 is provided with a spare hole 44 and a removable plug 45. During operation, the spare hole 44 is normally blocked with the plug 45, and the tracer 41 is injected into the demonstration tank 11 only through the main channel; when it is necessary to adjust the injection position or add injection points, the plug 45 can be removed, and the tracer 41 can be injected again through the spare hole 44.

[0046] This method can flexibly adapt to different experimental needs without requiring overall device modification. It ensures the stability of liquid injection, improves the flexibility and practicality of the device, is easy to operate and does not affect the realization of core functions, and is suitable for experimental needs in multiple scenarios.

[0047] Please see Figure 1As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, a plurality of horizontally spaced second through holes 15 are provided on the lower side of the transparent plate 12. The second through holes 15 are the connection interfaces between the connecting pipes 60 and the demonstration tank 11. During operation, one end of each connecting pipe 60 is connected to a different second through hole 15 to ensure a tight and leak-free connection. The connecting pipes 60 enable communication between the demonstration tank 11 and an external water level monitoring component, transmitting the water level status in the demonstration tank 11 in real time.

[0048] The horizontally spaced second through holes 15 enable simultaneous monitoring at multiple points, ensuring comprehensive water level data collection and avoiding monitoring blind spots. At the same time, there is no need for complex modifications to the transparent plate 12, which improves the accuracy and efficiency of water level monitoring while ensuring the integrity of the transparent plate 12.

[0049] Please see Figure 1 As a specific implementation of the water flow trajectory simulation demonstration device provided in this application, the main housing 10 has connection holes 16 on both sides of its bottom. These connection holes 16 provide dedicated interfaces for the connection of the inlet pipe 21, the outlet pipe 31 and the main housing 10, ensuring that the pipe connections are standardized and orderly.

[0050] During operation, connect one end of the inlet pipe 21 to the connection hole 16 on one side of the main tank 10, and connect one end of the outlet pipe 31 to the connection hole 16 on the other side. Tighten the connector at the interface to ensure a leak-proof seal. When filling with water, the water flows into the main tank 10 through the inlet pipe 21 and the connection hole 16 to replenish the water in the demonstration tank 11. After use, drain the water from the demonstration tank 11 through the outlet pipe 31 and the connection hole 16. At the same time, residual water can be cleaned through the connection hole 16.

[0051] This method eliminates the need for additional pipe supports, simplifies the installation process, avoids messy pipework, ensures smooth and stable water inlet and outlet, guarantees the continuity of water circulation, facilitates later inspection and maintenance, and reduces pipe obstruction of the observation field, thus improving operational convenience.

[0052] Please see Figure 1 As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, the water level gauge 50 is equipped with a measuring scale 53 and multiple labels 54. The measuring scale 53 is arranged parallel to the indicator tube 51, and the multiple labels 54 correspond one-to-one with the multiple indicator tubes 51, clearly indicating the correspondence between each indicator tube 51. During operation, the operator can intuitively read the water level height in each indicator tube 51 through the measuring scale 53, and quickly distinguish different indicator tubes 51 by combining the corresponding labels 54, accurately recording the water level data at each measuring point without the need for additional measuring tools.

[0053] This structure is simple, intuitive and easy to understand. It can quickly locate each indicator tube 51, clearly distinguish different monitoring points, simplify the water level reading process, improve the accuracy and efficiency of data recording, and facilitate the quick verification of the water level of each indicator tube 51, providing convenience for subsequent flow network drawing and data statistics.

[0054] Please see Figure 1 and Figure 3 As a specific embodiment of the water flow trajectory simulation demonstration device provided in this application, the water flow trajectory simulation demonstration device also includes a support frame 70, which provides a stable installation and bearing foundation for the entire device. The main tank 10, the inlet tank 20 and the outlet tank 30 are all fixedly installed on the support frame 70.

[0055] During operation, first place the support frame 70 stably, then install the main tank 10, inlet tank 20, and outlet tank 30 at their designated positions on the support frame 70, and secure them firmly with bolts and other connectors to ensure that all components are installed flat and accurately positioned. This design effectively improves the stability of the entire device and avoids water flow disturbance caused by uneven placement. It also raises the device height for easier observation and operation, and protects the bottom of the main tank 10 and all pipe interfaces, reducing wear.

[0056] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water flow trajectory simulation demonstration device, characterized in that, include: The main body has a demonstration tank inside and a transparent plate on one side for observation; the demonstration tank is filled with sand. A water inlet tank is installed at one end of the main tank, and the water inlet tank is provided with a water inlet pipe for adding water into the main tank; An outlet tank is installed at the other end of the main tank, and the outlet tank is lower than the inlet tank; the outlet tank is provided with an outlet pipe for discharging water from the main tank; Multiple injection tubes are arranged close to the water inlet tank, and one end of each tube passes through the transparent plate and is connected to the demonstration tank; the multiple injection tubes are arranged vertically at intervals to add tracer into the demonstration tank; The water level gauge has multiple vertically arranged indicator tubes; the lower end of the water level gauge has multiple connection ports that communicate with the indicator tubes. Multiple connecting pipes, one end of which passes through the transparent plate and connects to the bottom of the demonstration tank, and the other end of which is connected to multiple connection ports respectively; the connection positions of the multiple connecting pipes and the transparent plate are arranged horizontally at intervals.

2. The water flow trajectory simulation demonstration device as described in claim 1, characterized in that, Both the inlet tank and the outlet tank have the freedom to move up and down.

3. The water flow trajectory simulation demonstration device as described in claim 2, characterized in that, Both ends of the main housing are provided with mounting blocks, and the mounting blocks are provided with detachable fasteners and vertically arranged sliding grooves; the water inlet tank and the water outlet tank are respectively slidably connected in the two sliding grooves, and the fasteners are used to fix the water inlet tank and the water outlet tank to the mounting blocks.

4. The water flow trajectory simulation demonstration device as described in claim 3, characterized in that, The mounting block has two spaced mounting plates, and the sliding groove is located between the two mounting plates; each mounting plate has a screw hole, and the fastener includes a screw rod and a screwing part fixedly installed at one end of the screw rod and a pressure plate fixedly installed at the other end of the screw rod. The screw rod is threaded into the screw hole, and the pressure plate is located in the sliding groove, while the screwing part is located outside the mounting block.

5. The water flow trajectory simulation demonstration device as described in claim 1, characterized in that, The transparent plate has multiple first through holes arranged vertically at intervals, and the first through holes are located close to the water inlet tank; the water flow trajectory simulation demonstration device also includes a liquid storage box for holding tracer, the liquid storage box being higher than the first through holes; the two ends of the injection tube are respectively connected to the liquid storage box and the first through holes; the injection tube is equipped with a valve for controlling the on / off state.

6. The water flow trajectory simulation demonstration device as described in claim 5, characterized in that, The injection tube has a spare hole at one end connected to the first through hole, and a removable plug is provided on the spare hole.

7. The water flow trajectory simulation demonstration device as described in claim 1, characterized in that, The transparent plate has multiple second through holes on its lower side, and the multiple second through holes are arranged horizontally at intervals; one end of each of the multiple connecting tubes is connected to the multiple second through holes.

8. The water flow trajectory simulation demonstration device as described in claim 1, characterized in that, The bottom of the main body is provided with connection holes on both sides, and one end of the water inlet pipe and the water outlet pipe are respectively connected to the two connection holes.

9. The water flow trajectory simulation demonstration device as described in claim 1, characterized in that, The water level gauge is equipped with a measuring scale and multiple markings. The measuring scale is arranged parallel to the indicator tube, and the multiple markings correspond one-to-one with the multiple indicator tubes.

10. The water flow trajectory simulation demonstration device as described in claim 1, characterized in that, The water flow trajectory simulation demonstration device also includes a support frame, on which the main tank, the inlet tank, and the outlet tank are all mounted.

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