A device for dynamic simulation of upstream and downstream water levels in hydraulic engineering

Abstract

The utility model specifically is a kind of device for water conservancy engineering upstream and downstream water level dynamic simulation, including: support frame;Water inlet bucket;Water pump, water inlet of water pump is connected with the water inlet bucket;Water collecting tank, setting at support frame bottom, the water collecting tank is used to collect overflow water, and overflow water is returned to water inlet bucket by pipeline, forms closed cycle;Overflow tank, set in support frame, the top of water collecting tank is connected with water pump water outlet by overflow pipe;Lifting device, installation is in support frame top, and the lifting device in pull drive device is fixedly connected with overflow tank by rope;Lifting device executes the action of overflow tank height adjustment, realizes the dynamic change of upstream and downstream water level difference.The utility model has the advantages of: improving test response speed and adjustment accuracy, solve the problem of low efficiency and poor stability of traditional device manual adjustment;Through closed cycle water system, make test water form closed loop backflow, avoid waste.

Description

Technical Field

[0001] This utility model relates to the technical field of water conservancy engineering testing equipment, specifically a device for dynamic simulation of upstream and downstream water levels in water conservancy projects. Background Technology

[0002] In hydraulic engineering experimental research, the dynamic changes in upstream and downstream water levels are one of the key factors affecting the operational characteristics of hydraulic structures and water flow behavior. Developing corresponding simulation devices is of great significance for accurately simulating water level changes in actual engineering projects. Currently, most commonly used water level simulation devices employ a fixed structure, controlling water level by manually adjusting the flow rate through valves. However, these devices have the following shortcomings in practical applications:

[0003] First, traditional devices rely on manual operation to adjust the water level difference between upstream and downstream, a cumbersome process that takes a long time for the water level to stabilize, making rapid and precise dynamic adjustment difficult and affecting experimental efficiency and repeatability. Second, existing devices mostly use fixed overflow structures, with non-adjustable overflow heights or limited adjustment ranges, resulting in poor adaptability and difficulty in meeting the requirements of different experimental conditions regarding water level variation. Furthermore, some devices employ open water circulation systems, making it impossible to recycle and reuse experimental water, which not only wastes water resources but also limits the controllability and diversity of the experimental environment, hindering the conduct of long-term continuous experiments.

[0004] Therefore, there is an urgent need for a water level dynamic simulation device with a reasonable structure, flexible adjustment and water recycling function, so as to achieve rapid, stable and continuous adjustment of upstream and downstream water levels, meet the test requirements under various working conditions, and improve test efficiency and data accuracy. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for dynamic simulation of upstream and downstream water levels in water conservancy projects. This device is designed to provide a water conservancy project simulation device that can achieve dynamic adjustment of upstream and downstream water levels and has water recycling functions, thereby improving test efficiency, adaptability and water resource utilization.

[0006] To achieve the above objectives, a device for dynamic simulation of upstream and downstream water levels in water conservancy projects is designed, comprising: a support frame for supporting various components; an inlet tank for storing circulating water; a water pump, the inlet of which is connected to the inlet tank to transport water from the inlet tank to an overflow tank; a collection tank located at the bottom of the support frame for collecting overflow water and returning it to the inlet tank via a pipe, forming a closed loop; and an overflow tank located within the support frame, above the collection tank, connected to the water pump outlet via an overflow pipe for overflowing water. The tank is equipped with a level gauge to generate different overflow heads; a lifting device is installed on top of the support frame, and the lifting drive device inside the lifting device is fixedly connected to the overflow tank via ropes to adjust the height of the overflow tank; an electromagnetic flow meter is installed on the overflow pipe to collect dynamic flow data; the overflow pipe includes a connecting valve set on one side of the water collection tank, a pipe connecting one end of the connecting valve to the water pump, and a hose connecting the other end of the connecting valve to the overflow tank; wherein, the lifting device performs the action of adjusting the height of the overflow tank to realize the dynamic change of the water level difference between the upstream and downstream.

[0007] Preferably, the present invention further includes: the lifting device is an electric hoist, which is connected to the overflow trough by a hoisting method to realize its vertical lifting and lowering adjustment.

[0008] Preferably, the present invention further includes: the overflow trough has a square structure and the trough body is made of transparent material, which facilitates observation of the water flow status.

[0009] Preferably, the present invention further includes: the level gauge is an electronic level gauge, which monitors the water level in the overflow tank in real time and is connected to a data acquisition system.

[0010] Preferably, the present invention further includes: the hose is a pressure-resistant flexible pipe that connects the valve and the overflow trough, adapting to the displacement changes during the lifting and lowering process of the overflow trough.

[0011] Preferably, the present invention further includes: a water outlet valve is provided on the upper part of one side of the water collection tank, which is connected to the water inlet tank through a pipe. The water outlet valve is used to drain water when the water level in the water collection tank exceeds a threshold in order to maintain dynamic balance. A filter screen is provided in the return path between the water collection tank and the water inlet tank to prevent impurities from entering the water inlet tank.

[0012] Preferably, the present invention further includes: the electromagnetic flowmeter having a data output interface for real-time recording of flow rate changes and supporting experimental data analysis.

[0013] Preferably, the present invention further includes: the support frame is a welded steel structure with sufficient rigidity and stability, suitable for long-term operation and multiple adjustment operations.

[0014] Preferably, the present invention further includes: the connecting valve is disposed on the lower part of one side of the water collection tank, one end of the connecting valve is connected to the water pump through a pipe to form a stable water pump supply circuit, and the other end of the connecting valve is connected to the overflow tank through a hose, so that the water pump forms a non-rigid connection with the overflow tank through the connecting valve.

[0015] Preferably, the present invention further includes: the device as a whole constitutes a closed loop system, realizing the reuse of water resources and avoiding water resource loss caused by open systems. The device is suitable for simulating the operation status of water conservancy projects such as pumping stations, sluice gates, and spillways under different upstream and downstream water level conditions.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This invention utilizes an electric hoist to adjust the overflow tank height, achieving rapid, continuous, and precise adjustment of the water level difference between upstream and downstream. This significantly improves the test response speed and adjustment accuracy, solving the problems of low efficiency and poor stability associated with manual adjustment in traditional devices. By setting up a closed-loop circulating water system, the test water forms a closed-loop return flow between the inlet tank, water pump, overflow tank, and collection tank, avoiding water waste caused by open systems. It has the advantages of water conservation, environmental protection, and low operating costs. The overall structure of the device is simple and easy to operate. The overflow tank height can be flexibly adjusted according to test requirements, enhancing the system's adaptability to different working conditions and improving the versatility and repeatability of the test. At the same time, the use of an electromagnetic flowmeter to collect flow data in real time provides accurate dynamic parameter support for the test process, helping to improve the reliability and analytical accuracy of the test data. It is suitable for the dynamic water level simulation needs of various hydraulic engineering models such as pumping stations, sluice gates, and spillways. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pipeline connection of the circulating water system;

[0019] Figure 2 This is the main view of the overall structure of the device;

[0020] Figure 3 This is a left view of the overall structure of the device;

[0021] Figure 4 This is a top view of the overall structure of the device;

[0022] In the diagram: 1. Inlet tank, 2. Water pump, 3. Lifting device, 4. Overflow tank, 5. Water collection tank, 6. Support frame, 7. Hose, 8. Pipe, 9. Outlet valve, 10. Connecting valve, 11. Electromagnetic flow meter. Detailed Implementation

[0023] To make the purpose, principle and structure of this utility model clearer, the following description is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] See Figures 1-4 This invention provides a device for dynamic simulation of upstream and downstream water levels in water conservancy projects. In this embodiment, the device is arranged on the foundation of the test site. The support frame 6 is a three-dimensional frame structure constructed by welding steel profiles, possessing sufficient rigidity to bear the weight of each component and the dynamic loads generated during operation. An electric hoist is installed on the top of the support frame 6 as a lifting device 3. The lifting device 3 is connected to the top of the overflow trough 4 via a steel wire rope, enabling vertical adjustment of the overflow trough 4 with an adjustment accuracy down to the millimeter level, meeting the requirements of precision testing.

[0025] The overflow tank 4 is a square structure made of transparent material, facilitating observation of the water flow during the experiment. An electronic level gauge is installed inside the overflow tank 4 to monitor the water level in real time. The level data can be transmitted to an external data acquisition system via a data cable, enabling real-time recording and analysis of water level changes. The overflow tank 4 has an inlet at the bottom, connected to the outlet of the water pump 2 via an overflow pipe. The overflow pipe includes a connecting valve 10 located on the lower side wall of the water collection tank 5. The outer end of the connecting valve 10 is connected to the water pump 2 via a pipe 8, while the inner end of the connecting valve 10 is connected to the overflow tank 4 via a flexible hose 7. The reason for this arrangement is that the rigid pipe 8 can ensure the water pump 2 can stabilize the water input and pump in with low loss. However, for the overflow trough 4, which needs to generate elevation changes and vertical movement, the rigid pipe 8 will cause limiting conflicts. Therefore, a flexible hose 7 is used to connect with the overflow trough 4, and a connecting valve 10 is set on the fixed water collection tank 5 as an anchor point. The connecting valve 10 can be fixed on the water collection tank 5 to form a stable support and connection, thereby realizing the conversion and conduction between the flexible hose 7 and the rigid pipe 8. The length of the hose 7 is sufficient to adapt to the displacement changes during the lifting and lowering process of the overflow trough 4, ensuring continuous and stable water flow. The material properties of the rigid pipe 8 can ensure that the water pressure pumped out by the water pump 2 is transmitted to the overflow trough 4, which needs to overflow, in a form with the lowest possible loss. Furthermore, the arrangement of the connecting valve 10, the hose 7, and the pipe 8 allows the water inlet path of the overflow tank 4 to be as close as possible to the center of gravity of the overflow tank 4, reducing the impact of the pipe connection and water input offset on the overflow tank 4. The connecting valve 10 not only provides stable support for the water inlet path, but also cleverly passes through the water collection tank 5 without interfering with it.

[0026] Preferably, the length of the hose 7 can be reserved to be longer than the maximum elevation gap between the water collection tank 5 and the overflow tank 4, or the hose 7 can be configured as a flexible and deformable material, and the maximum deformation stroke of the hose 7 is greater than the maximum elevation gap between the water collection tank 5 and the overflow tank 4, so that the hose 7 can ensure that the overflow tank 4, the connecting valve 10 and the water pump 2 are always connected when the overflow tank 4 moves to any position.

[0027] Water pump 2 is placed on one side of water inlet tank 1, and the two are connected by pipe 8. Water inlet tank 1 is a tank with a cavity structure used to store test water. After water pump 2 starts, it transports water from water inlet tank 1 to overflow tank 4 through overflow pipe. The water accumulates in the tank to a certain height and then overflows evenly from the top edge of the tank, forming a stable water head. The overflow water falls into water collection tank 5 located directly below overflow tank 4. Water collection tank 5 has an outlet on its side wall and flows back to water inlet tank 1 through pipe 8, forming a closed circulation path. The return pipe 8 is equipped with a filter screen to intercept any impurities that may be carried in the water, preventing them from entering water inlet tank 1 and affecting water quality and the operation of water pump 2.

[0028] An electromagnetic flow meter 11 is installed on the overflow pipe connecting the water pump 2 and the overflow tank 4 to monitor the water flow rate in real time. The electromagnetic flow meter 11 has a data output function, which can transmit the flow signal to the data acquisition system and record it synchronously with the water level data, so as to facilitate subsequent analysis of the relationship between upstream and downstream water level changes and flow rate.

[0029] During the experiment, operators controlled the lifting device 3 to raise and lower, adjusting the height of the overflow trough 4 to change the overflow head and simulate different upstream water level conditions. The downstream water level could be adjusted through the downstream water collection structure or the water level control device in the test model; the two worked together to achieve dynamic changes in the upstream and downstream water level difference. The entire adjustment process did not require stopping the water flow, enabling continuous operation and significantly improving experimental efficiency.

[0030] This device is suitable for simulating the flow characteristics of hydraulic structures such as pumping stations, sluice gates, and spillways under different upstream and downstream water level conditions. By replacing the overflow tank 4 with different specifications or adjusting the configuration of the inlet tank 1 and the water pump 2, the applicability of the device can be expanded to meet various test requirements. The closed-loop circulation system ensures the reuse of test water, making it suitable for long-term continuous tests, and has good water-saving effect and operating economy.

[0031] In summary, the device in this embodiment has a compact structure, is easy to operate, and is flexible in adjustment. It can achieve rapid, stable, and continuous adjustment of upstream and downstream water levels and has data acquisition capabilities, providing reliable technical support for water conservancy engineering experiments.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A device for dynamic simulation of upstream and downstream water levels in water conservancy projects, characterized in that, include: The supporting frame is used to support the various components; The inlet tank is used to store circulating water; A water pump, the water pump inlet of which is connected to the water inlet tank, is used to transport water in the water inlet tank to the overflow tank; A water collection tank is installed at the bottom of the support frame. The water collection tank is used to collect overflow water and return the overflow water to the inlet tank through a pipe to form a closed loop. An overflow trough is installed inside the support frame, above the water collection tank, and is connected to the water pump outlet through an overflow pipe. A level gauge is installed inside the overflow trough to generate different overflow heads. The lifting device is installed on the top of the support frame. The lifting drive device inside the lifting device is fixedly connected to the overflow trough by ropes and is used to adjust the height of the overflow trough. An electromagnetic flow meter, installed on an overflow pipe, is used to collect dynamic flow data; The overflow pipe includes a connecting valve disposed on one side of the water collection tank, a pipe connecting one end of the connecting valve to the water pump, and a flexible hose connecting the other end of the connecting valve to the overflow tank. The lifting device adjusts the height of the overflow channel to achieve dynamic changes in the water level difference between the upstream and downstream.

2. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The lifting device is an electric hoist, which is connected to the overflow trough by a hoisting method to achieve vertical lifting and lowering adjustment.

3. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The overflow trough has a square structure and is made of transparent material to facilitate observation of the water flow.

4. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The level gauge is an electronic level gauge that monitors the water level in the overflow tank in real time and is connected to the data acquisition system.

5. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The hose is a pressure-resistant flexible pipe that connects the valve and the overflow trough, adapting to displacement changes during the lifting and lowering of the overflow trough.

6. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The upper part of one side of the water collection tank is equipped with a water outlet valve, which is connected to the water inlet tank through a pipe. The water outlet valve is used to drain water when the water level in the water collection tank exceeds the threshold in order to maintain dynamic balance. The return path between the water collection tank and the water inlet tank is equipped with a filter screen to prevent impurities from entering the water inlet tank.

7. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The electromagnetic flowmeter has a data output interface for real-time recording of flow rate changes and supports experimental data analysis.

8. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The support frame is a welded steel structure with sufficient rigidity and stability, suitable for long-term operation and repeated adjustment operations.

9. The device for dynamic simulation of upstream and downstream water levels in water conservancy projects according to claim 1, characterized in that, The connecting valve is located on the lower part of one side of the water collection tank. One end of the connecting valve is connected to the water pump through a pipe to form a stable water pump supply circuit. The other end of the connecting valve is connected to the overflow tank through a hose so that the water pump forms a non-rigid connection with the overflow tank with variable stroke through the connecting valve.

Images