A method, system, equipment, and medium for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station.

Abstract

This invention provides a method, system, equipment, and medium for constructing a hydrodynamic calculation model downstream of a daily regulating hydropower station, relating to the field of model construction technology. The model includes a water-adjacent ground surface, one side of which has a naturally formed slope with its bottom connected to the water surface. An installation rod is provided at the top of the slope and the water surface. A slope detection component is provided on the surface of the installation rod near the slope. The slope detection component includes a vertical frame with a slider in the middle, which slides onto the surface of the installation rod. Vertical grooves are formed on both sides of the vertical frame, and the slider slides along the grooves. A second spring is fixed to the inner wall of the top of the groove. Compared to existing technologies, this method, through the action of the flow detection component, viscosity detection component, and slope detection component, can simultaneously record changes in the flow velocity, water level, flow viscosity, and slope roughness of the watershed. A model is then built based on the recorded data, facilitating subsequent prediction of the downstream river flow field of the hydropower station.

Description

Technical Field

[0001] This invention relates to the field of model building technology, specifically to a method, system, equipment, and medium for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station. Background Technology

[0002] Due to the peak-shaving effect of daily regulating hydropower stations, downstream river channels no longer follow natural hydrological patterns. Under the influence of daily peak-shaving, especially large-scale peak-shaving, changes in outflow from the reservoir cause sharp rises and falls in downstream water levels, creating potential public safety risks in downstream river sections. Therefore, it is urgent and necessary to conduct research on the impact of peak-shaving flow from daily regulating hydropower stations on the flow movement process in downstream river sections, to avoid or mitigate the local impact effects of hydropower stations, and to provide strong guarantees for the safe release of water from hydropower stations. In the past, domestic methods for predicting water flow fields mainly included empirical analysis, physical model testing, and mathematical modeling. Among them, mathematical modeling establishes a mathematical model including governing equations and corresponding boundary conditions, and finally solves the mathematical model to obtain the flow field distribution. In recent years, with the development of computer performance and algorithm technology, mathematical modeling has gradually become an important means of studying river flow field distribution due to its low cost, strong versatility, and high accuracy.

[0003] Hydrodynamic calculation models require statistical analysis of various data. Based on the basic characteristics of fluid motion, water level, flow velocity and direction, viscosity, roughness, etc., are important factors affecting the establishment of hydrodynamic models. However, these factors are mostly determined by collecting historical water level data, on-site hydrological measurements, and empirical estimations, which affects the accuracy of the hydrodynamic calculation model and lacks the function of dynamically adjusting it according to actual conditions. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a method, system, equipment, and medium for constructing a hydrodynamic calculation model downstream of a daily regulating hydropower station to solve the problems mentioned in the background. The present invention has a novel structure. Through the action of a flow detection component, a viscosity detection component, and a slope detection component, it can simultaneously record the changes in flow velocity, water level, flow viscosity, and slope roughness of the watershed, and establish a model based on the recorded data, thereby facilitating subsequent prediction of the flow field in the downstream river channel of the hydropower station.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station, comprising a water-adjacent ground surface, one side of which has a naturally formed slope, the bottom of which connects to the bottom surface of the water. An installation rod is provided at the top of the slope and the bottom surface of the water. A slope detection component is provided on the surface of the installation rod near the slope. The slope detection component includes a vertical frame, with a slider in the middle of the frame, the slider slidingly fitted onto the surface of the installation rod. Vertical grooves are formed on both sides of the vertical frame, and the slider slides along the grooves. A second spring is fixed to the inner wall of the top of the groove, and the other end of the second spring is fixedly connected to the slider. A water flow detection component is provided on the surface of the installation rod located on the bottom surface, the water flow detection component including a first vertical rod. The first vertical pole is inserted into the middle of the river, and its top is fixedly connected to the mounting pole. A second vertical pole is installed on the surface of the mounting pole near the bottom of the slope. Floats are slidably installed on the surfaces of both the first and second vertical poles. A viscosity detection component is provided on the surface of the mounting pole between the first and second vertical poles. The viscosity detection component includes a detection box. A water inlet cylinder is provided at the front end of the detection box, and a connecting pipe is fixed near the top of the water inlet cylinder. The other end of the connecting pipe communicates with the detection chamber of the detection box. An upper circular plate is slidably installed inside the water inlet cylinder, and a lower circular plate is provided at the bottom of the upper circular plate. The lower circular plate is drivenly connected to the vertical frame. A fixing frame is fixed on the mounting pole at the positions of the water inlet cylinder and the detection box, and the water inlet cylinder and the detection box are fixedly connected to the mounting frame.

[0006] Furthermore, a control box is fixed on the water-adjacent ground, and one end of the mounting rod is fixedly connected to the control box. A photovoltaic panel is installed on the top of the control box, and the mounting rod has hollow interior wires embedded inside.

[0007] Furthermore, the slope detection assembly also includes a spring telescopic rod. The mounting rod is provided with a spring telescopic rod on one side of the highest point of the slope, and a first sliding sleeve is fixed to the top of the spring telescopic rod. A second sliding sleeve is fixed to the top of the second vertical rod, and both the first and second sliding sleeves are slidably sleeved on the mounting rod. Locking bolts are inserted into the outer surfaces of the first and second sliding sleeves. A base plate is rotatably installed on the extended end of the spring telescopic rod and the bottom of the vertical frame, and the base plate slides in contact with the slope surface.

[0008] Furthermore, a winding seat is fixed on the outer surface of the first and second sliding sleeves on the same side, and a first motor is fixed on the top of the winding seat. The output end of the first motor is fixedly connected to the winding shaft of the winding seat. A traction rope is wound inside the winding shaft of the two winding seats. One side of the slider is fixedly connected to the traction rope. A rangefinder is fixedly installed on the top of the vertical frame.

[0009] Furthermore, the water flow detection component also includes a first water flow velocity meter. The first water flow velocity meter is installed at the bottom of the float, and a second water flow velocity meter is installed at the bottom of both the first and second vertical rods. A pointed tip is fixed at the bottom of the first vertical rod and is inserted into the bottom of the water. A storage groove is opened at the bottom of the second vertical rod, and a rod is slidably inserted into the storage groove. A ball is fixed at the bottom of the rod, and a first spring is fixed between the top of the ball and the inner wall of the storage groove.

[0010] Furthermore, the viscosity detection component also includes a water outlet. The bottom of the detection box has a water outlet, and the inside of the detection box is equipped with a detection chamber. The water outlet is connected to the detection chamber inside the detection box through a solenoid valve and a water pump. A second motor is fixedly installed on the top of the detection box.

[0011] Furthermore, the top and bottom of the water inlet cylinder are both open, and a top frame is fixed to the top of the water inlet cylinder. A third spring is fixed between the top of the top frame and the upper circular plate. A connecting rod is fixed to the bottom of the upper circular plate, and the other end of the connecting rod is fixedly connected to the lower circular plate. A pull rope is fixed to one side of the lower circular plate, and the pull rope slides through the upper circular plate and the top of the water inlet cylinder and is fixedly connected to the slider.

[0012] A method for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station, the method comprising the following steps:

[0013] (1) Preparation in advance: It is necessary to divide the grid, use underwater measuring points to confirm the boundary, and use the algorithm to automatically divide the grid. It is required to ensure the uniformity and integrity of the grid. Then, manually adjust the grid according to the calculation requirements, such as increasing the grid in neat areas, densifying the grid in complex areas, and arranging the monitoring points reasonably.

[0014] (2) Set up the site: Install various fluid detection devices at designated monitoring points, and use water velocity detection components, viscosity detection components and slope detection components to detect data such as flow velocity, water level, water viscosity and slope roughness changes at different locations and depths of the water body;

[0015] (3) Model building: Based on basic data such as hydrology and river topography, as well as various fluid monitoring data, a hydrodynamic calculation model is built. Using hydrodynamic principles and mathematical models, two-dimensional hydrodynamic calculations are performed to simulate the flow process of the river downstream of the hydropower station.

[0016] (4) Model prediction: The downstream water flow process is simulated by establishing a hydrodynamic calculation model, and the characteristics of water flow such as downstream water level change, propagation time, and steady-state period are compared and analyzed. The discharge flow conditions of different power stations are generalized, and the downstream water flow propagation law is analyzed.

[0017] (5) Prediction results: The calculation results are provided to the front end for display through the API interface to ensure the real-time and accuracy of the data, provide a scientific basis for water level monitoring and prediction, and make adjustments and modifications according to the software and hardware conditions under the domestic environment to meet the needs of independent control of water conservancy information infrastructure.

[0018] A hydrodynamic calculation model construction system for the downstream of a daily regulating hydropower station is provided, which is used to realize the aforementioned hydrodynamic joint calculation model construction equipment. The hydrodynamic calculation model construction system includes: a detection module for detecting various fluid data, including water flow velocity, water viscosity, water level, and roughness change values; a wireless data transmission module for transmitting the detected data to a terminal device; and a model construction module for constructing an initial hydrodynamic joint calculation model and integrating the received detection data.

[0019] A computer-readable storage medium, wherein the computer program instructions are configured to perform the operation of the hydrodynamic calculation model construction method at runtime.

[0020] The beneficial effects of this invention are:

[0021] 1. In this invention, as the vertical frame moves to the left along the mounting rod, the pull rope pulls the upper and lower circular plates upward. At this time, the movement of the upper circular plate creates negative pressure in the water inlet cylinder, drawing water into the cylinder. When the upper circular plate approaches the connecting pipe, the lower circular plate enters the bottom of the water inlet cylinder. Subsequently, the upper and lower circular plates continue to move, pushing the water upward through the lower circular plate. When the upper circular plate passes the connection port of the connecting pipe, the water sample is pushed into the detection chamber from the connecting pipe by the lower circular plate. As the vertical frame moves to the right, the upper and lower circular plates can be reset by the elastic force of the third spring, facilitating the next test. This allows for simultaneous detection of slope changes and water sample viscosity.

[0022] 2. This invention, by arranging the surfaces of the first and second vertical rods, can detect and record the water flow velocity at the bottom and top of the middle and near-shore areas of the water flow, respectively. The float can measure the height of the middle and near-shore areas of the water flow, and the float's change data can be recorded by devices such as displacement sensors. The first vertical rod is inserted into the water surface through its pointed bottom, and the ball at the bottom of the second vertical rod can be moved telescopically by the elastic force of the insertion rod and the first spring, thereby facilitating the adjustment of the position of the second vertical rod in the water so that its bottom is close to the lowest point of the slope.

[0023] 3. The spring telescopic rod and the second vertical rod of the present invention are installed on the mounting rod through the first and second sliding sleeves, respectively corresponding to the highest and lowest points of the slope. The vertical frame is driven to slide along the surface of the mounting rod by the winding seat and the traction rope of the two rods. The bottom plate of the vertical frame slides along the slope surface. During this process, the traction rope can be moved in different directions by the alternating winding and unwinding of the two winding seats, which drives the vertical frame to move horizontally. The slope surface is monitored. When the slope is washed away by the water, the height of the bottom plate and the vertical frame will change. The height change value is measured by the elastic force of the second spring and the distance measuring instrument, and the change value is recorded for periodic detection of slope changes.

[0024] 4. Compared with the prior art, the present invention, through the action of the water flow detection component, viscosity detection component and slope detection component, can simultaneously record the changes in flow velocity, water level, water flow viscosity and slope roughness of the water basin, and establish a model based on the recorded data, thereby facilitating the subsequent prediction of the flow field of the downstream river channel of the hydropower station. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating a method for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station according to the present invention.

[0026] Figure 2 This is a schematic diagram of the overall structure of a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention;

[0027] Figure 3 This is a schematic diagram of the overall side structure of a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention;

[0028] Figure 4 This is a schematic diagram of the water flow detection component structure of a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention;

[0029] Figure 5 This is a schematic diagram of the viscosity detection component structure of a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention;

[0030] Figure 6 This is a schematic diagram of the slope detection component structure of a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the inlet cylinder of a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention;

[0032] Figure 8 This is a schematic diagram of the top structure of the vertical frame of a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention.

[0033] Figure 9 This is a schematic diagram of the bottom structure of the first and second vertical rods of the device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to the present invention.

[0034] In the diagram: 1. Water-adjacent ground; 11. Slope; 12. Bottom surface; 2. Control box; 21. Photovoltaic panel; 22. Mounting rod; 3. Water flow detection component; 31. First vertical rod; 32. Second vertical rod; 33. Float; 34. First water flow velocity meter; 35. Second water flow velocity meter; 36. Pointed tip; 37. Storage slot; 38. Sphere; 39. Insert rod; 310. First spring; 4. Slope detection component; 41. Vertical frame; 42. Base plate; 43. First sliding sleeve; 44. Second sliding sleeve 45. Winding seat; 46. First motor; 47. Traction rope; 48. Locking bolt; 49. Slider; 410. Vertical groove; 411. Second spring; 412. Spring telescopic rod; 413. Rangefinder; 5. Viscosity testing assembly; 51. Testing box; 52. Second motor; 53. Water outlet; 54. Water inlet cylinder; 55. Connecting pipe; 56. Fixing frame; 57. Top frame; 58. Third spring; 59. Upper circular plate; 510. Connecting rod; 511. Lower circular plate; 512. Pull rope. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] Please see Figures 1 to 9This invention provides a technical solution: a device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station, comprising a water-adjacent ground surface 1, one side of which has a naturally formed slope 11, and the bottom of the slope 11 is connected to a water bottom surface 12. An installation rod 22 is provided at the top of the slope 11 and the water bottom surface 12. A slope detection component 4 is provided on the surface of the installation rod 22 near the slope 11. The slope detection component 4 includes a vertical frame 41, with a slider 49 in the middle of the vertical frame 41, and the slider 49 is slidably fitted onto the surface of the installation rod 22. Vertical grooves 410 are formed on both sides of the vertical frame 41. The slider 49 slides along the groove. A second spring 411 is fixed to the inner wall of the top of the vertical groove 410, and the other end of the second spring 411 is fixedly connected to the slider 49. A water flow detection component 3 is provided on the surface of the mounting rod 22 on the bottom surface 12. The water flow detection component 3 includes a first vertical rod 31, which is inserted into the middle of the river. The top of the first vertical rod 31 is fixedly connected to the mounting rod 22. A second vertical rod 32 is installed on the surface of the mounting rod 22 near the bottom of the slope 11. Floats 33 are slidably installed on both the first vertical rod 31 and the second vertical rod 32. A viscosity detection component 5 is provided on the surface of the mounting rod 22 located between the first vertical rod 31 and the second vertical rod 32. The viscosity detection component 5 includes a detection box 51. A water inlet cylinder 54 is provided at the front end of the detection box 51, and a connecting pipe 55 is fixed near the top of the water inlet cylinder 54. The other end of the connecting pipe 55 communicates with the detection cavity of the detection box 51. An upper circular plate 59 is slidably installed inside the water inlet cylinder 54, and a lower circular plate 511 is provided at the bottom of the upper circular plate 59. The lower circular plate 511 is connected to the vertical frame 41. The mounting rod 22 is fixed at the position of the water inlet cylinder 54 and the detection box 51. A fixed frame 56 is provided, and the water inlet cylinder 54 and the detection box 51 are fixedly connected to the mounting frame. When using the device, the control box 2 is fixed on the water-adjacent ground 1. The first vertical rod 31 of the water flow velocity detection component is arranged in the middle area of ​​the water flow, and the second vertical rod 32 is arranged near the lowest point of the slope 11. The slope detection component 4 and the viscosity detection component are installed on the mounting rod 22 through the mounting rod 22, and the water flow velocity, water viscosity, water level and slope 11 roughness changes are detected respectively. The detected data are summarized. The device can be arranged in multiple groups in different areas to perform multi-segment detection of the water flow area.

[0037] In this embodiment, a control box 2 is fixed on the water-adjacent ground 1, and one end of the mounting rod 22 is fixedly connected to the control box 2. A photovoltaic panel 21 is installed on the top of the control box 2. The mounting rod 22 has hollow wires embedded inside. The device generates electricity through the photovoltaic panel 21 to power the electrical components. The control box 2 contains a control system, including a detection module, a storage module, and a wireless data transmission module, which transmits and records various detected data to facilitate the subsequent establishment of a hydrodynamic calculation model.

[0038] In this embodiment, the slope detection component 4 further includes a spring telescopic rod 412. The spring telescopic rod 412 is provided on the side of the mounting rod 22 located at the highest point of the slope 11. A first sliding sleeve 43 is fixed to the top of the spring telescopic rod 412, and a second sliding sleeve 44 is fixed to the top of the second vertical rod 32. Both the first sliding sleeve 43 and the second sliding sleeve 44 are slidably sleeved on the mounting rod 22. Locking bolts 48 are inserted into the outer surfaces of the first sliding sleeve 43 and the second sliding sleeve 44. A base plate 42 is rotatably mounted on the extended end of the spring telescopic rod 412 and the bottom of the vertical frame 41. The base plate 42 slides in contact with the surface of the slope 11. A winding seat 45 is fixed to the outer surface of the first sliding sleeve 43 and the second sliding sleeve 44 on the same side. A first motor 46 is fixed to the top of the winding seat 45. The output end of the first motor 46 is fixedly connected to the winding shaft of the winding seat 45. A traction rope 4 is wound inside the winding shafts of the two winding seats 45. 7. One side of the slider 49 is fixedly connected to the traction rope 47. A rangefinder 413 is fixedly installed on the top of the vertical frame 41. The spring telescopic rod 412 and the second vertical rod 32 are installed on the mounting rod 22 through the first sliding sleeve 43 and the second sliding sleeve 44, respectively corresponding to the highest and lowest points of the slope 11. The vertical frame 41 is driven to slide along the surface of the mounting rod 22 by the winding seat 45 of the two and the traction rope 47. The bottom plate 42 of the bottom of the vertical frame 41 slides along the surface of the slope 11. During this process, the traction rope 47 can be moved in different directions by the two winding seats 45 alternately winding and unwinding, driving the vertical frame 41 to move horizontally and detect the surface of the slope 11. When the slope 11 is washed away by the height of the water, the height of the bottom plate 42 and the vertical frame 41 will change. The change value is measured by the elastic force of the second spring 411 and the rangefinder 413, and the change value is recorded for periodic monitoring of the changes in the slope 11.

[0039] In this embodiment, the water flow detection component 3 further includes a first water flow velocity meter 34. The first water flow velocity meter 34 is installed at the bottom of the float 33, and a second water flow velocity meter 35 is installed at the bottom of both the first vertical rod 31 and the second vertical rod 32. A pointed tip 36 is fixed at the bottom of the first vertical rod 31 and is inserted into the bottom surface 12. A receiving groove 37 is provided at the bottom of the second vertical rod 32, and a rod 39 is slidably inserted into the receiving groove 37. A ball 38 is fixed at the bottom of the rod 39, and a first spring 310 is fixed between the top of the ball 38 and the inner wall of the receiving groove 37. The first water flow velocity meter 34 and the second water flow velocity meter 35 are both existing technologies. By being arranged on the surfaces of the first vertical rod 31 and the second vertical rod 32, the water flow velocity at the bottom and upper layers of the middle and near-shore areas can be monitored and recorded. The float 33 can measure the height of the middle and near-shore areas of the water flow through displacement. Sensors and other devices can record the changes in the float 33. The first vertical rod 31 is inserted into the water surface through the pointed end 36 at the bottom. The ball 38 at the bottom of the second vertical rod 32 can be moved telescopically by the elastic force of the insertion rod 39 and the first spring 310, so as to facilitate the adjustment of the position of the second vertical rod 32 in the water, so that its bottom is close to the lowest point of the slope 11. Displacement sensors are installed at the top of the first vertical rod 31 and the second vertical rod 32. The float 33 moves along the path of the first vertical rod 31 and the second vertical rod 32 through the displacement sensors. The water level is calculated based on the change in the position of the float 33. The first vertical rod 31 and the second vertical rod 32 are of fixed length. In actual installation, it is necessary to select an appropriate length of the first vertical rod 31 and the second vertical rod 32 according to the water depth, and keep the bottom of the first vertical rod 31 and the second vertical rod 32 on the same straight line as the bottom of the slope as much as possible. The flow velocity at the high point and the low point of the water flow is measured by the flow velocity sensors at the bottom of the vertical rod and the bottom of the float 33.

[0040] In this embodiment, the viscosity detection component 5 further includes a water outlet 53. The water outlet 53 is located at the bottom of the detection box 51 and is connected to the detection chamber via a solenoid valve and a water pump. A second motor 52 is fixedly installed on the top of the detection box 51. The top and bottom of the water inlet cylinder 54 are both open, and a top frame 57 is fixed to the top of the water inlet cylinder 54. A third spring 58 is fixed between the top of the top frame 57 and the upper circular plate 59. A connecting rod 510 is fixed to the bottom of the upper circular plate 59, and the other end of the connecting rod 510 is fixedly connected to the lower circular plate 511. A pull rope 512 is fixed to one side of the lower circular plate 511, and the pull rope 512 slides through the upper circular plate 59 and the top of the water inlet cylinder 54 and is fixedly connected to the slider 49. The detection element inside the detection box 51 is controlled by the second motor 52, and its principle is the same as that of the existing rotational viscometer. Water samples are drawn through the water inlet cylinder 54 and sent into the detection chamber of the detection box 51. The second motor 52 drives the water to rotate and detects its viscosity. Specifically, the upper circular plate 59 and the lower circular plate 511 inside the water inlet cylinder 54 are used to draw water samples and send water samples into the detection box 51, respectively. The rope 512 provides traction. In the initial state, due to the connection of the connecting rod 510 and the elastic force of the third spring 58, the upper circular plate 59 is close to the bottom of the water inlet cylinder 54, and the lower circular plate 511 is located at the outer end of the bottom of the water inlet cylinder 54. As the vertical frame 41 moves to the left along the mounting rod 22, the rope 512 pulls the upper circular plate 59 and the lower circular plate 511 upward. At this time, the movement of the upper circular plate 59 creates a negative pressure inside the water inlet cylinder 54, drawing water into the water inlet cylinder 54. When the upper circular plate 59 is close to the connecting pipe 55, the lower circular plate 511 enters the water inlet cylinder. At the bottom of the water cylinder 54, the upper circular plate 59 and the lower circular plate 511 continue to move. The water is pushed upward by the lower circular plate 511. The upper circular plate 59 passes the connection port of the connecting pipe 55. The water sample is pushed into the detection box 51 by the lower circular plate 511 from the connecting pipe 55. After the water sample viscosity is detected, the water is discharged through the bottom drain. As the vertical frame 41 moves to the right, it can work with the elastic force of the third spring 58 to reset the upper circular plate 59 and the lower circular plate 511, which is convenient for the next test. At the same time, the detection of the slope 11 change and the detection of the water sample viscosity are carried out simultaneously.

[0041] A method for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station, the method comprising the following steps:

[0042] (1) Preparation in advance: It is necessary to divide the grid, use underwater measuring points to confirm the boundary, and use the algorithm to automatically divide the grid. It is required to ensure the uniformity and integrity of the grid. Then, manually adjust the grid according to the calculation requirements, such as increasing the grid in neat areas, densifying the grid in complex areas, and arranging the monitoring points reasonably.

[0043] (2) Set up the site: Install various fluid detection devices at designated monitoring points, and use water velocity detection components, viscosity detection components and slope detection components to detect data such as flow velocity, water level, water viscosity and slope roughness changes at different locations and depths of the water body;

[0044] (3) Model building: Based on basic data such as hydrology and river topography, as well as various fluid monitoring data, a hydrodynamic calculation model is built. Using hydrodynamic principles and mathematical models, two-dimensional hydrodynamic calculations are performed to simulate the flow process of the river downstream of the hydropower station.

[0045] (4) Model prediction: The downstream water flow process is simulated by establishing a hydrodynamic calculation model, and the characteristics of water flow such as downstream water level change, propagation time, and steady-state period are compared and analyzed. The discharge flow conditions of different power stations are generalized, and the downstream water flow propagation law is analyzed.

[0046] (5) Prediction results: The calculation results are provided to the front end for display through the API interface to ensure the real-time and accuracy of the data, provide a scientific basis for water level monitoring and prediction, and make adjustments and modifications according to the software and hardware conditions under the domestic environment to meet the needs of independent control of water conservancy information infrastructure.

[0047] A system for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station, used to implement the aforementioned hydrodynamic joint calculation model construction equipment; the hydrodynamic calculation model construction system includes: a detection module. The system is used to detect various fluid data, including water flow velocity, water viscosity, water level, and slope roughness changes. A wireless data transmission module transmits the detected data to terminal devices. A model building module constructs an initial hydrodynamic joint calculation model, integrating the received detection data. It employs a self-developed two-dimensional mathematical model based on the Navier-Stokes equations, which are triaxially incompressible and uniformly distributed with Reynolds values, and adhere to the Boussinesq assumption and hydrostatic pressure assumption. This part uses existing technologies and algorithm equations. The data monitoring and prediction module directly relates to the system's ability to monitor the current water level accurately and provide reliable water level predictions in real time. It utilizes NodeJS and Express to build backend services, processing real-time water level data and combining historical data and the hydrodynamic model for short-term water level prediction. NodeJS's asynchronous I / O and non-blocking characteristics make it well-suited for handling high-concurrency real-time data requests. The backend service receives real-time water level data from sensors or data sources and preprocesses it. In addition to real-time data, the backend service also integrates historical water level data.

[0048] Develop API interfaces, including those for obtaining real-time water level data and querying historical water level data, for front-end calls to display water level changes and prediction results.

[0049] A computer-readable storage medium storing instructions configured to execute the hydrodynamic calculation model construction method at runtime, wherein the storage medium records various detection data of the water body.

[0050] When using the device, the control box 2 is fixed on the water-adjacent ground 1. The first vertical rod 31 of the water flow velocity detection component is arranged in the middle area of ​​the water flow, and the second vertical rod 32 is arranged near the lowest point of the slope 11. The slope detection component 4 and the viscosity detection component are installed on the mounting rod 22 via the mounting rod 22. The spring telescopic rod 412 and the second vertical rod 32 are installed on the mounting rod 22 via the first sliding sleeve 43 and the second sliding sleeve 44, respectively corresponding to the highest and lowest points of the slope 11. The vertical frame 41 is driven to slide along the surface of the mounting rod 22 via the winding seat 45 and the traction rope 47 of both components. The bottom plate 42 of the vertical frame 41 slides along the surface of the slope 11. During this process, the vertical frame 41 can slide along the surface of the slope 11. The traction rope 47 moves in different directions by alternately winding and unwinding the two winding seats 45, driving the vertical frame 41 to move horizontally and detect the surface of the slope 11. When the slope 11 is washed away by the water, the height of the bottom plate 42 and the vertical frame 41 will change. The change in height is measured by the elastic force of the second spring 411 and the distance measuring instrument 413, and the change value is recorded for periodic detection of the change in the slope 11. In the initial state, due to the connection of the connecting rod 510 and the elastic force of the third spring 58, the upper circular plate 59 is close to the bottom of the water inlet cylinder 54, and the lower circular plate 511 is located at the outer end of the bottom of the water inlet cylinder 54. During the movement of the vertical frame 41 to the left along the mounting rod 22 Pulling rope 512 moves the upper circular plate 59 and lower circular plate 511 upwards. At this time, the movement of the upper circular plate 59 creates negative pressure inside the water inlet cylinder 54, drawing water into it. When the upper circular plate 59 approaches the connecting pipe 55, the lower circular plate 511 enters the bottom of the water inlet cylinder 54. Then, the upper and lower circular plates 59 and 511 continue to move, pushing the water upwards through the lower circular plate 511. The upper circular plate 59 passes the connection port of the connecting pipe 55, and the water sample is pushed into the detection chamber 51 by the lower circular plate 511 from the connecting pipe 55. After the viscosity of the water sample is tested, the water is discharged through the bottom drain. During the movement of the vertical frame 41 to the right, the elastic force of the third spring 58 can help to push the upper circular plate 59 upwards. Plate 59 and lower circular plate 511 are reset to facilitate the next test, while the detection of slope 11 changes and water sample viscosity are carried out simultaneously. The first water flow velocity meter 34 and the second water flow velocity meter 35 are both existing technologies. By being arranged on the surfaces of the first vertical rod 31 and the second vertical rod 32, the water flow velocity in the middle and near the shore areas of the water flow can be detected and recorded. The float 33 can measure the height of the middle and shore areas of the water flow. The change data of the float 33 can be recorded by displacement sensors and other devices. The various detected data are summarized. The device can be arranged in multiple groups in different areas to perform multi-segment detection of the water flow area.

[0051] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station, comprising a water-adjacent ground surface, characterized in that: One side of the water-adjacent ground has a naturally formed slope, with its bottom connected to the bottom of the water. An installation rod is mounted on the top of both the slope and the bottom. A slope detection component is mounted on the surface of the installation rod near the slope. The slope detection component includes a vertical frame with a slider in the middle, which slides onto the surface of the installation rod. Vertical grooves are formed on both sides of the vertical frame, and the slider slides along these grooves. A second spring is fixed to the inner wall of the top of each groove, with its other end fixedly connected to the slider. A water flow detection component is mounted on the surface of the installation rod near the bottom of the water. This water flow detection component includes a first vertical rod inserted into the middle of the river, with its top fixed to the installation rod. The mounting rod is connected to a second vertical rod mounted on its surface near the bottom of the slope. Floats are slidably mounted on both the first and second vertical rods. A viscosity detection component is located on the surface of the mounting rod between the first and second vertical rods. The viscosity detection component includes a detection box. A water inlet cylinder is located at the front end of the detection box, and a connecting pipe is fixed near the top of the water inlet cylinder. The other end of the connecting pipe communicates with the detection chamber of the detection box. An upper circular plate is slidably mounted inside the water inlet cylinder, and a lower circular plate is located at the bottom of the upper circular plate. The lower circular plate is connected to the vertical frame. A fixing frame is fixed to the mounting rod at the positions of the water inlet cylinder and the detection box, and the water inlet cylinder and the detection box are fixedly connected to the mounting frame.

2. The device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to claim 1, characterized in that: A control box is fixed on the water-adjacent ground, and one end of the mounting rod is fixedly connected to the control box. A photovoltaic panel is installed on the top of the control box, and the mounting rod has hollow interiors with embedded wires.

3. The device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to claim 1, characterized in that: The slope detection assembly also includes a spring telescopic rod. The mounting rod is provided on one side of the highest point of the slope, and a first sliding sleeve is fixed to the top of the spring telescopic rod. A second sliding sleeve is fixed to the top of the second vertical rod, and both the first and second sliding sleeves are slidably sleeved on the mounting rod. Locking bolts are inserted into the outer surfaces of the first and second sliding sleeves. A base plate is rotatably installed on the extended end of the spring telescopic rod and the bottom of the vertical frame, and the base plate slides in contact with the slope surface.

4. The device for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station according to claim 3, characterized in that: A take-up seat is fixed on the outer surface of the first and second sliding sleeves on the same side, and a first motor is fixed on the top of the take-up seat. The output end of the first motor is fixedly connected to the take-up shaft of the take-up seat. A traction rope is wound inside the take-up shaft of the two take-up seats. One side of the slider is fixedly connected to the traction rope. A rangefinder is fixedly installed on the top of the vertical frame.

5. The device for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station according to claim 4, characterized in that: The water flow detection component also includes a first water flow velocity meter. The first water flow velocity meter is installed at the bottom of the float, and a second water flow velocity meter is installed at the bottom of both the first and second vertical rods. The bottom of the first vertical rod is fixed with a pointed tip that is inserted into the bottom of the water. The bottom of the second vertical rod is provided with a storage groove, and a rod is slidably inserted into the storage groove. The bottom of the rod is fixed with a ball, and a first spring is fixed between the top of the ball and the inner wall of the storage groove.

6. The device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to claim 1, characterized in that: The viscosity testing component also includes a water outlet. The bottom of the testing box has a water outlet, and the inside of the testing box is equipped with a testing chamber. The water outlet is connected to the testing chamber inside the testing box through a solenoid valve and a water pump. A second motor is fixedly installed on the top of the testing box.

7. The device for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station according to claim 6, characterized in that: The water inlet cylinder has openings at both the top and bottom, and a top frame is fixed to the top of the water inlet cylinder. A third spring is fixed between the top of the top frame and the upper circular plate. A connecting rod is fixed to the bottom of the upper circular plate, and the other end of the connecting rod is fixedly connected to the lower circular plate. A pull rope is fixed to one side of the lower circular plate, and the pull rope slides through the upper circular plate and the top of the water inlet cylinder and is fixedly connected to the slider.

8. A method for constructing a downstream hydrodynamic calculation model of a daily regulating hydropower station using the construction equipment described in claim 1, characterized in that: The construction method includes the following steps: (1) Preparatory work: It is necessary to divide the grid, confirm the boundary using underwater measuring points, and perform automatic grid division using algorithms. It is required to ensure the uniformity and integrity of the grid. Then, manually adjust the grid according to the calculation requirements. Increase the grid size in neat areas and densify the grid in complex areas. Arrange the monitoring points reasonably. (2) Set up the site: Install various fluid detection devices at designated monitoring points, and use the water velocity detection component, viscosity detection component and slope detection component to detect the changes in flow velocity, water level, water viscosity and slope roughness at different locations and depths of the water body; (3) Model building: Based on basic hydrological and river topographic data and various fluid monitoring data, a hydrodynamic calculation model is built. Using hydrodynamic principles and mathematical models, two-dimensional hydrodynamic calculations are performed to simulate the flow process of the river downstream of the hydropower station. (4) Model prediction: The downstream water flow process is simulated by establishing a hydrodynamic calculation model, and the characteristics of downstream water level changes, propagation time, and steady-state periodic water flow are compared and analyzed. The discharge flow conditions of different power stations are generalized, and the downstream water flow propagation law is analyzed. (5) Prediction results: The calculation results are provided to the front end for display through the API interface to ensure the real-time and accuracy of the data, provide a scientific basis for water level monitoring and prediction, and make adjustments and modifications according to the software and hardware conditions under the domestic environment to meet the needs of independent control of water conservancy information infrastructure.

9. A system for constructing a downstream hydrodynamic calculation model for a daily regulating hydropower station, characterized in that, The device for constructing a hydrodynamic joint calculation model as described in any one of claims 1 to 7; the hydrodynamic calculation model construction system includes: a detection module for detecting various fluid data, including water flow velocity, water viscosity, water level and roughness change values; a wireless data transmission module for transmitting the detected data to a terminal device; and a model algorithm construction module for constructing an initial hydrodynamic joint calculation model and summarizing and fusing the received detection data.

10. A computer-readable storage medium storing instructions, characterized in that, The instruction is configured to execute the hydrodynamic calculation model construction method as described in claim 8 at runtime.

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