Flow weir experiment device

Abstract

The utility model discloses a flow weir experiment device which comprises a water guide bottom plate, a weir plate, a side coaming, a water supply system and an adjusting device, the weir plate is arranged on the first side of the water guide bottom plate, and a weir opening for water flow to pass through is formed in the weir plate; the side coaming is arranged on the side face of the water guide bottom plate in a surrounding mode, and a water outlet groove is defined by the side coaming, the weir plate and the water guide bottom plate. The water supply system comprises a water outlet which is used for providing water flow with preset flow for the water tank; wherein the water guide bottom plate can rotate by taking the end part, close to one end of the weir plate, of the water guide bottom plate as an axis, so that an included angle between the water guide bottom plate and the horizontal plane is adjusted to a preset angle, and the flow weir experiment device disclosed by the utility model can simulate each working environment of the flow weir.

Description

Technical Field

[0001] The utility model relates to the technical field of flow weirs, in particular to a flow weir experimental device. Background Art

[0002] In order to prevent major water inrush accidents during tunnel construction, it is necessary to conduct engineering surveys of mountain tunnels during the construction process, especially special hydrogeological surveys in karst areas. At present, the flow weir monitoring method is often used at home and abroad to measure the flow of surface rivers and underground ditches in mountainous areas, that is, flow monitoring is performed by setting up a flow weir. In monitoring work, groundwater and surface water rivers with different slopes are often encountered. The size of the slope will have a negative impact on the flow weir monitoring. In particular, steep slope rivers will cause large measurement errors in the monitoring data, which will bring certain risks to engineering construction.

[0003] At present, there is a lack of research on the influence of different slopes on the accuracy of river flow monitoring in China. In the problem of flow measurement in steep slope rivers, previous studies have focused on the selection of flow measurement buildings on steep slope rivers and the hydraulic characteristics of flow measurement buildings, but lack research on the influence of different slopes on the accuracy of flow weir monitoring. In order to reduce the above measurement deviation, an experimental device that can simulate the above environment is needed. Utility Model Content

[0004] The utility model provides a flow weir experimental device to solve the environmental simulation problem of the flow weir.

[0005] According to one aspect of the utility model, a flow weir experimental device is provided, the flow weir experimental device comprising:

[0006] Water guide bottom plate;

[0007] A weir plate is arranged on a first side of the water guide bottom plate, and a weir opening is formed on the weir plate for water to pass through;

[0008] A side panel is arranged on the side of the water guide bottom plate, and together with the weir plate and the water guide bottom plate, a water outlet trough is arranged;

[0009] A water supply system, comprising a water outlet, wherein the water outlet is used to provide a water flow of a preset flow rate to the water tank;

[0010] The water guide bottom plate can rotate with its end portion close to one end of the weir plate as an axis, so as to adjust the angle between the water guide bottom plate and the horizontal plane to a preset angle.

[0011] In some embodiments, the water supply system includes a water supply tank and a water pipe, the water outlet is provided in the water supply tank, the water pipe is connected to the water supply tank, and the water pipe is used to provide water to the water supply tank at a preset flow rate.

[0012] In some embodiments, the water supply system includes a water pump and a flow meter, the water pump is connected to the water pipe, and the flow meter is arranged on the water pipe or the water supply tank.

[0013] In some embodiments, the water supply tank is located on a second side of the water guide bottom plate, and the first side is opposite to the second side.

[0014] In some embodiments, the water supply system includes a water tank, which is arranged on a side of the weir plate away from the water guide bottom plate and is used to receive water flowing out of the weir mouth, and the water guide pipe is connected to the water tank.

[0015] In some embodiments, the water outlet is provided in plurality, and the plurality of water outlets are spaced apart and arranged in a straight line and are parallel to a side edge of the water guide bottom plate close to the weir plate.

[0016] In some embodiments, the flow weir experimental device also includes an adjusting device, which is used to adjust the angle between the water-guiding bottom plate and the horizontal plane to a preset angle. The adjusting device includes an adjusting rod and a supporting portion provided on the adjusting rod and retractable relative to the adjusting rod, and the supporting portion is connected to the water-guiding bottom plate.

[0017] In some embodiments, the flow weir experimental device includes a water level gauge, and a mounting groove is provided in the area below the weir mouth of the weir plate, and the water level gauge is installed in the mounting groove.

[0018] In some embodiments, the water supply system includes a flow control valve, and the flow control valve is disposed on the water pipe.

[0019] In some embodiments, the weir opening of the weir plate is any one of a rectangular shape, a triangular shape, or a composite structure of a rectangular shape and a triangular shape.

[0020] The utility model has the following beneficial effects: by rotating the water-guiding bottom plate with its end close to one end of the weir plate as the axis, the angle between the water-guiding bottom plate and the horizontal plane is adjusted to a preset angle. In this way, the slope of the water-guiding bottom plate can be changed to achieve simulation of different slopes. On this basis, water of a preset flow rate is provided to the water tank through the water outlet of the water supply system to achieve multiple environmental simulations of the flow weir.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the line structure of the flow weir experimental device of the preferred embodiment of the utility model;

[0024] Figure 2 It is a side schematic diagram of a flow weir experimental device according to a preferred embodiment of the utility model.

[0025] Legend:

[0026] 10. Water guide bottom plate; 10a. Water trough; 20. Weir plate; 20a. Weir mouth; 30. Side panel; 40. Water supply system; 40a. Water outlet; 41. Water supply tank; 42. Water guide pipe; 43. Water pump; 44. Flow meter; 45. Water tank; 50. Adjustment device; 60. Water level gauge. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0028] In recent years, with the vigorous development of high-speed railway and highway tunnel construction in mountainous areas, in order to prevent major sudden water inrush accidents during tunnel construction, it is particularly important to do a good job in mountain tunnel engineering survey, especially hydrogeological special survey in karst areas, during the construction process. This puts higher requirements on basic hydrological monitoring work. The accuracy of hydrological monitoring work also affects the accuracy of water inflow prediction. Improving the accuracy of long-term real-time hydrological monitoring of groundwater and surface water in small watersheds in mountainous areas where tunnels pass through is an urgent task.

[0029] At present, the flow weir monitoring method is often used at home and abroad to measure the flow of surface rivers and underground ditches in mountainous areas. In actual engineering and hydrological monitoring work, groundwater and surface water rivers with different slopes are often encountered. The size of the slope will have a negative impact on the flow weir monitoring, especially the steep slope river will bring obvious measurement errors to the monitoring data, bringing risks to engineering construction. At present, there is a lack of research on the impact of different slopes on the accuracy of river flow monitoring in China. On the issue of flow measurement in steep slope rivers, previous studies have focused on the selection of flow measurement buildings on steep slope rivers and the hydraulic characteristics of flow measurement buildings, and lack of research on the influence of different slopes on the accuracy of flow weir monitoring.

[0030] like Figure 1 and Figure 2As shown, a flow weir experimental device of this embodiment includes a water guide bottom plate 10, a weir plate 20, a side panel 30, a water supply system 40 and a regulating device 50.

[0031] The weir plate 20 is disposed on a first side of the water guide bottom plate 10, and a weir opening 20a for water flow to pass through is formed on the weir plate 20. It can be understood that the water flow can flow along the water guide bottom plate 10 to the weir plate 20 and flow out from the weir opening 20a.

[0032] The side panels 30 are arranged around the sides of the water guide bottom plate 10, and together with the weir plate 20 and the water guide bottom plate 10, form a water outlet trough 10a. It can be understood that the weir plate 20 is connected to the side panels 30, and the two are together around the water guide bottom plate 10, thereby forming the water trough 10a structure.

[0033] The water supply system 40 includes a water outlet 40a, which is used to provide a preset flow of water to the water tank 10a. Here, the preset flow of water means that the flow of water is a constant value and is relatively fixed and does not fluctuate during the simulation process.

[0034] The water guide bottom plate 10 can rotate with its end close to the weir plate 20 as the axis, so as to adjust the angle between the water guide bottom plate 10 and the horizontal plane to a preset angle. In other words, the slope of the water guide bottom plate 10 can be changed, so as to achieve simulation of different slopes. It should be noted that after the slope of the water guide bottom plate 10 is adjusted, the water guide bottom plate 10 and the weir plate 20 and the side panel 30 are still sealed and watertight. If necessary, a sealing ring can be added for waterproofing, or a removable sealant can be applied.

[0035] By rotating the water guide bottom plate 10 with its end close to the weir plate 20 as the axis, the angle between the water guide bottom plate 10 and the horizontal plane is adjusted to a preset angle. In this way, the slope of the water guide bottom plate 10 can be changed to achieve simulations of different slopes. On this basis, water with a preset flow rate is provided to the water tank 10a through the water outlet 40a of the water supply system 40 to achieve various environmental simulations of the flow weir.

[0036] In some embodiments, the water supply system 40 includes a water supply tank 41 and a water pipe 42, a water outlet 40a is provided in the water supply tank 41, the water pipe 42 is connected to the water supply tank 41, and the water pipe 42 is used to provide water at a preset flow rate to the water supply tank 41. The water supply tank 41 is used to store water and inject water into the water tank 10a through the water outlet 40a.

[0037] It should be noted that the side panel 30 may be a part of the water supply box 41, that is, a part of the surface of the water supply box 41 participates in enclosing the water tank 10a.

[0038] In some embodiments, in order to achieve flow control, the water supply system 40 includes a flow control valve, which is disposed on the water conduit 42. That is, the water outlet 40a is supplied with water at a preset flow rate through the flow control valve.

[0039] In some embodiments, the water supply system 40 includes a water pump 43 and a flow meter 44, the water pump 43 is connected to the water pipe 42, and the flow meter 44 is arranged in the water pipe 42 or the water supply tank 41. It can be understood that the flow meter 44 can obtain the water flow rate flowing into the water supply tank 41. Thereby assisting in controlling the water supply flow rate in the water pipe 42 or the water supply tank 41. That is, the output flow rate of the current water pump can be confirmed by the flow meter 44, and then the adjustment amount can be confirmed to adjust the output flow rate of the water pump, so that the actual output flow rate of the water pump is the same as the simulated preset flow rate.

[0040] In some embodiments, the water supply box 41 is located on the second side of the water guide bottom plate 10, and the first side is opposite to the second side. Thus, the water supply box 41 located on the second side is relatively far away from the weir plate 20 located on the first side, thereby reducing the disturbance of the water supply hole on the measurement result.

[0041] In some embodiments, the water supply system 40 includes a water tank 45, which is disposed on the side of the weir plate 20 away from the water guide bottom plate 10, and is used to receive the water flowing out of the weir 20a, and the water guide pipe 42 is connected to the water tank 45. In this way, the water supply system 40 is a circulation system, and the water flow inside it can be recycled to achieve water conservation.

[0042] In some embodiments, a plurality of water outlets 40a are provided, and the plurality of water outlets 40a are arranged in a straight line at intervals and are parallel to one side of the water guide bottom plate 10 close to the weir plate 20. In this way, the water outlets 40a can be relatively evenly distributed in the width direction of the water guide bottom plate 10, and the height direction of each water outlet 40a and the water guide bottom plate is relatively consistent, thereby reducing disturbance and improving measurement accuracy.

[0043] In some embodiments, the flow weir experimental device further includes an adjusting device 50. The adjusting device 50 is used to rotate the water guide bottom plate 10 around its end close to one end of the weir plate 20, so as to adjust the angle between the water guide bottom plate 10 and the weir plate 20.

[0044] The water guide bottom plate 10 is rotated with its end close to the weir plate 20 as the axis through the adjusting device 50, so as to adjust the angle between the water guide bottom plate 10 and the weir plate 20. That is to say, the slope of the water guide bottom plate 10 can be changed under the action of the adjusting device 50, so as to realize the simulation of different slopes.

[0045] The adjusting device 50 includes an adjusting rod and a supporting portion which is arranged on the adjusting rod and is retractable relative to the adjusting rod, and the supporting portion is connected to the water guide bottom plate 10. By making the supporting portion retractable relative to the adjusting rod, the overall height of the adjusting device 50 is adjusted, thereby adjusting the inclination angle of the water guide bottom plate 10.

[0046] It is understandable that the extension and retraction method of the adjusting rod and the support part is not limited. For example, the adjusting rod and the support part can be a threaded extension structure, or can be electrically driven. The adjusting rod can also have a gear structure to drive the support part of the rack structure to rise and fall.

[0047] For the convenience of adjustment, a scale may be provided on the support portion or the adjustment rod, and a number of inclinations may be marked at intervals on the scale. When the support portion rises or falls to a corresponding inclination, it indicates that the water guide bottom plate 10 is adjusted to the corresponding inclination.

[0048] In some embodiments, the flow weir experimental device includes a water level meter 60 , and a mounting groove is provided in the area below the weir opening 20 a of the weir plate 20 , and the water level meter 60 is installed in the mounting groove.

[0049] It should be noted that, since the surface of the water guide bottom plate 10 is inclined, and when the inclination changes, the height will also change accordingly, by setting the mounting groove in the mounting groove of the weir plate 20, the influence of the above changes on the water level detection result can be avoided.

[0050] The water level meter 60 may be an automatic water level recorder, which can automatically record the water level detection result. The automatic water level recorder can be connected to a display device signal, so that the operator can observe it conveniently.

[0051] It is understandable that the shape of the weir plate 20 is not limited. In some embodiments, the weir opening 20a of the weir plate 20 is any one of a rectangle, a triangle, or a composite structure of a rectangle and a triangle.

[0052] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flow weir experimental device, characterized in that: The flow weir experimental device comprises: A water guide bottom plate (10); a weir plate (20) disposed on a first side of the water guide bottom plate (10), the weir plate (20) being provided with a weir opening (20a) for water to flow through; a side enclosure plate (30) disposed on a side of the water guide bottom plate (10), and together with the weir plate (20) and the water guide bottom plate (10) enclosing a water outlet trough (10a); A water supply system (40), comprising a water outlet (40a), wherein the water outlet (40a) is used to provide a water flow of a preset flow rate to the water tank (10a); The water guide bottom plate (10) is capable of rotating with its end portion close to one end of the weir plate (20) as the axis, thereby adjusting the angle between the water guide bottom plate (10) and the horizontal plane to a preset angle.

2. The flow weir experimental device according to claim 1, characterized in that: The water supply system (40) comprises a water supply box (41) and a water pipe (42); the water outlet (40a) is arranged on the water supply box (41); the water pipe (42) is connected to the water supply box (41); and the water pipe (42) is used to supply water to the water supply box (41) at a preset flow rate.

3. The flow weir experimental device according to claim 2, characterized in that: The water supply system (40) comprises a water pump (43) and a flow meter (44); the water pump (43) is connected to the water pipe (42); and the flow meter (44) is arranged on the water pipe (42) or the water supply tank (41).

4. The flow weir experimental device according to claim 2, characterized in that: The water supply box (41) is located on a second side of the water guide bottom plate (10), and the first side is opposite to the second side.

5. The flow weir experimental device according to claim 3, characterized in that: The water supply system (40) comprises a water tank (45), which is arranged on the side of the weir plate (20) away from the water guide bottom plate (10) and is used to receive the water flowing out from the weir opening (20a). The water guide pipe (42) is connected to the water tank (45).

6. The flow weir experimental device according to any one of claims 1 to 5, characterized in that: A plurality of water outlets (40a) are provided, and the plurality of water outlets (40a) are spaced apart and arranged in a straight line and are parallel to a side edge of the water guide bottom plate (10) close to the weir plate (20).

7. The flow weir experimental device according to any one of claims 1 to 5, characterized in that: The flow weir experimental device further comprises an adjusting device (50), wherein the adjusting device (50) is used to adjust the angle between the water guide bottom plate (10) and the horizontal plane to a preset angle, wherein the adjusting device (50) comprises an adjusting rod and a supporting portion which is arranged on the adjusting rod and is retractable relative to the adjusting rod, wherein the supporting portion is connected to the water guide bottom plate (10).

8. The flow weir experimental device according to any one of claims 1 to 5, characterized in that: The flow weir experimental device comprises a water level meter (60); a mounting groove is provided in the area below the weir opening (20a) of the weir plate (20); and the water level meter (60) is mounted in the mounting groove.

9. The flow weir experimental device according to any one of claims 2 to 5, characterized in that: The water supply system (40) comprises a flow control valve, and the flow control valve is arranged on the water conduit (42).

10. The flow weir experimental device according to any one of claims 1 to 5, characterized in that: The weir opening (20a) of the weir plate (20) is any one of a rectangle, a triangle, or a composite structure of a rectangle and a triangle.

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