A circulating water flow device simulating different riverbanks and river channels

Abstract

The invention discloses a circulating water flow device for simulating river channels with different riverbanks, comprising a support (1), a circulating water tank (2), a longitudinal slope adjustment mechanism and a circulating water device; the circulating water tank (2) is hinged to the support (1), and the longitudinal slope adjustment mechanism supports and adjusts the horizontal angle between the circulating water tank (2) and the support (1); two side plates (24) of the circulating water tank (2) are hinged to the two sides of the bottom plate (21) to form a V-shaped trough body with a V-shaped cross section with a variable opening angle; a front end plate (22) and a rear end plate (23) are respectively arranged at both ends of the V-shaped trough body, and are clamped and sealed with the V-shaped trough body by a clamping mechanism; a heat insulation cotton (3) and a placement simulation auxiliary device are arranged at the bottom of the V-shaped trough body; a water outlet (25) is opened below the front end plate (22), and a water inlet (26) is arranged above the rear end plate (23); the circulating water device connects the water inlet (26) and the water outlet (25) to circulate water into the V-shaped trough body. The continuous stepless adjustment angle of the horizontal and longitudinal slopes can be achieved simultaneously.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical structures, and in particular to a circulating water flow device for simulating river channels with different riverbanks. Background Art

[0002] Slope is an important factor affecting slope flow and slope erosion characteristics. Compared with gentle slopes, the water flow dynamic characteristics and erosion characteristics under steep slope conditions have their own particularities and require special research. The research methods are mainly field tests and indoor simulation tests. Due to the difficulty, long cycle and complex influencing factors of field observation, it is difficult to conduct systematic research. Indoor variable slope test flume is one of the important test methods and facilities for studying the process and mechanism of slope erosion. Traditional variable slope flumes usually use three fulcrums to support the flume, one power source and two fulcrums to support the flume. Therefore, it is difficult to synchronize the two fulcrums during the slope adjustment process, and repeated adjustment of the slope will cause great damage to the glass side wall. Most of the existing variable slope flumes use a support structure composed of two fulcrums. The entire flume is fixed on a hinge support and a movable fulcrum, which is convenient for slope adjustment, but the scale of the flume and the range of infinite slope adjustment are limited.

[0003] At present, most of the simulation test circulating water tanks only control a single factor, and have the characteristics of high cost, low utilization rate, low test efficiency, time-consuming and labor-intensive operation, and low precision. There are few accurate test devices that can take into account factors such as wind force, river channel morphology, bank soil, flow velocity, flow, common hydraulic structures, and temperature. Summary of the invention

[0004] The purpose of the present invention is to provide a circulating water flow device for simulating different riverbanks and channels, which can simultaneously realize continuous and infinite adjustment of the transverse and longitudinal slopes, thereby playing a role in changing the morphology of the riverbank.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A circulating water flow device for simulating different riverbanks and river channels, comprising a support 1, a circulating water tank 2, a longitudinal slope adjustment mechanism and a circulating water device;

[0007] The circulating water tank 2 is installed on the bracket 1, and one end is hinged to the bracket 1. The longitudinal slope adjustment mechanism is installed on the bracket 1 below the middle of the circulating water tank 2 to support and adjust the horizontal angle between the circulating water tank 2 and the bracket 1;

[0008] The circulating water tank 2 comprises a bottom plate 21, a front end plate 22, a rear end plate 23 and two side plates 24; the two side plates 24 are hinged to the two sides of the bottom plate 21 to form a V-shaped tank body with a V-shaped cross section with a variable opening angle; the front end plate 22 and the rear end plate 23 are respectively arranged at both ends of the V-shaped tank body, and are clamped and sealed with the V-shaped tank body through a clamping mechanism;

[0009] The bottom of the V-shaped trough is provided with heat insulation cotton 3, and the simulation auxiliary device is placed on the heat insulation cotton 3;

[0010] A water outlet 25 is provided below the front end plate 22, and a water inlet 26 is provided above the rear end plate 23. The circulating water device connects the water inlet 26 and the water outlet 25 to circulate water into the V-shaped groove body.

[0011] The longitudinal slope adjustment mechanism comprises a hydraulic cylinder 5 , the cylinder body of the hydraulic cylinder 5 is hinged on the bracket 1 , and the piston rod of the hydraulic cylinder 5 extends upward and the top end is hinged below the middle of the bottom plate 21 .

[0012] The clamping mechanism comprises a G-type clamp.

[0013] The circulating water device comprises a water storage tank 6, a steady flow water tank 7, a submersible pump 8 and a water pipe 9;

[0014] The water at the water outlet 25 of the circulating water tank 2 flows into the water storage tank 6. The submersible pump is arranged in the water storage tank 6 to pump the water from the water storage tank 6 into the steady flow water tank 7 through the water pipe 9. The steady flow water tank 7 is arranged on the rear end plate 23. The opening of the steady flow water tank 7 is higher than the circulating water tank 2. After the steady flow water tank 7 is full, the water flows into the circulating water tank 2 from the water inlet 26.

[0015] The steady flow water tank 7 is provided with a PVC steady flow pipe.

[0016] The simulation auxiliary device includes one or more of a pebble block 4, an electromagnetic flow meter, simulated artificial grass, an artificial aeration fan or a simulated dam.

[0017] It can be seen from the technical solution provided by the present invention described above that a circulating water flow device for simulating river channels with different riverbanks provided by an embodiment of the present invention can simultaneously realize continuous and infinite adjustment of the horizontal and vertical slopes. The circulating water tank is made of stainless steel as a whole, wherein the river channel slope is connected by three steel plates and movable hinges as a whole, which is convenient for changing the horizontal slope of the river channel, and the longitudinal slope of the river channel is controlled by the bottom hydraulic pump. The hydraulic circulation system consists of a water storage tank, a flow stabilization tank, a water pump and a circulation pipeline. The water pump is placed in the water storage tank and connected to the circulation pipeline. There is a valve at the connection between the circulation pipeline and the flow stabilization tank to control the overall flow rate. The auxiliary equipment system consists of a simulated river dam, an artificial aeration fan and a PVC flow stabilization pipe. These devices are not necessary devices and can be added or deleted according to experimental requirements. The circulating water tank can simulate the impact of different water treatment methods on water quality indicators in natural rivers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a circulating water flow device for simulating river channels with different riverbanks provided in an embodiment of the invention;

[0020] Figure 2 A schematic cross-sectional view of a circulating water tank of a circulating water flow device for simulating different riverbanks and river channels provided in an embodiment of the invention;

[0021] Figure 3 A schematic diagram of a circulating water device for simulating a circulating water flow device for a river channel with different riverbanks provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the front end plate structure of a circulating water flow device for simulating river channels with different riverbanks provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of a front end plate water outlet structure of a circulating water flow device for simulating river channels with different riverbanks provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the support, water tank support and water storage tank structure of a circulating water flow device for simulating different riverbanks and river channels provided in an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of a steady flow tank structure of a circulating water flow device for simulating river channels with different riverbanks provided in an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the rear end plate structure of a circulating water flow device for simulating river channels with different riverbanks provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0029] like Figure 1As shown, a circulating water flow device simulating different riverbanks and river channels includes a bracket 1, a circulating water tank 2, a longitudinal slope adjustment mechanism and a circulating water device; the circulating water tank 2 is installed on the bracket 1, and the circulating water tank 2 is made of stainless steel. The overall length of the river channel is 6m, the bottom width is 0.3m, and the width of the river banks on both sides is 0.6m. In addition, the water tank support 12 provides strength support. Figure 6 As shown, one end of the circulating water tank 2 is hinged to the bracket 1, and specifically, the bottom plate 21 or the front end plate 22 is hinged to the bracket 1. In this example, the water tank support 12 is hinged to the bracket 1 through a hinge 24. The longitudinal slope adjustment mechanism is installed on the bracket 1 below the middle of the circulating water tank 2 to support and adjust the horizontal angle between the circulating water tank 2 and the bracket 1; the specific longitudinal slope adjustment mechanism includes a hydraulic cylinder 5, the cylinder body of the hydraulic cylinder 5 is hinged to the bracket 1, and the piston rod of the hydraulic cylinder 5 extends upward and is hinged to the bottom of the middle of the bottom plate 21. By adjusting the height of the piston rod of the hydraulic cylinder 5 extending upward, the angle between the circulating water tank 2 and the horizontal plane is adjusted to be adjusted between 0 and 15°. Of course, the hydraulic cylinder 5 needs to be connected to the hydraulic control system such as the hydraulic pump 11 and the control valve. The specific technical scheme and method belong to common knowledge and will not be repeated.

[0030] like Figure 2 As shown, the circulating water tank 2 includes a bottom plate 21, a front end plate 22, a rear end plate 23 and two side plates 24; the two side plates 24 are hinged to the two sides of the bottom plate 21 to form a V-shaped trough body with a V-shaped cross section with a variable opening angle, and the front end plate 22 and the rear end plate 23 are respectively arranged at both ends of the V-shaped trough body, and are clamped and sealed with the V-shaped trough body by a clamping mechanism; the clamping mechanism includes a G-type clip 10, that is, a G-type anchor, which is a general commodity and will not be described in detail. Since the two side plates 24 are hinged to the two sides of the bottom plate 21, the opening angle of the V-shaped cross section can be adjusted, and the maximum range of the angle between the side plate 24 and the bottom plate 21 is 0 to 90°, generally controlled at 15 to 90°, and different angles on the left and right sides can be achieved, such as 30° on one side and 45° on the other side, to simulate different river banks. When in use, loosen the G-type clamp 10, adjust the side plate 24 and the bottom plate 21 to a suitable angle, and then tighten the G-type clamp 10. A sealing strip is provided between the side plate 24 and the front plate 22 and the rear plate 23 to achieve a watertight seal.

[0031] The bottom of the V-shaped trough is provided with insulation cotton 3, and a simulation auxiliary device is placed on the insulation cotton 3. The insulation cotton 3 is made of black insulation cotton. The simulation auxiliary device includes one or more of pebbles 4, electromagnetic flowmeter, simulated artificial grass, artificial aeration fan or simulated dam. Pebbles 4 Pebbles 4 ensure that the water temperature of the water tank is not too high or too low, and also provide a certain roughness, so that the circulating water tank is similar to the actual river channel. The simulated soil column is a 120cm×20cm×70cm riverbank simulated soil column, which is filled with different soils to explore the evolution of the water quality of the percolation water. Artificial aeration fans, electric fans are placed at equal intervals on the edge of the circulating water tank to simulate the effect of aeration on the experimental water quality indicators; the simulated dam is a detachable simulated dam with self-adjustable height, which simulates the effect of common hydraulic structures on river water quality.

[0032] like Figure 4 and 5 As shown, a water outlet 25 is provided below the front end plate 22, and a water guide groove 13 is provided at the water outlet 25. A water inlet 26 is provided above the rear end plate 23. Figure 7 As shown, the water inlet 26 is arranged on the steady flow water tank 7 described later, and the circulating water device connects the water inlet 26 and the water outlet 25 to circulate water into the V-shaped tank body.

[0033] like Figure 3 As shown, the circulating water device includes a water storage tank 6, a steady flow water tank 7, a submersible pump 8 and a water pipe 9; the water from the water outlet 25 of the circulating water tank 2 flows into the water storage tank 6 through the water guide trough 13, the submersible pump is arranged in the water storage tank 6, and pumps the water storage tank 6 into the steady flow water tank 7 through the water pipe 9, the steady flow water tank 7 is provided with a steady flow water tank inlet 15 on the side, the water pipe 9 is connected to the steady flow water tank inlet 15, the steady flow water tank 7 is arranged on the rear end plate 23, the opening of the steady flow water tank 7 is higher than the circulating water tank 2, after the steady flow water tank 7 is filled, the water flows into the circulating water tank 2 from the water inlet 26, and a cycle is completed. The steady flow water tank 7 is provided with a PVC steady flow pipe. The PVC steady flow pipe is arranged in the downstream steady flow water tank 7, and the honeycomb PVC pipe with a diameter of 3 cm and a length of 5 cm is a steady flow device, which plays a role in stabilizing the flow direction and flow rate of the incoming water and making the water flow straight.

[0034] The circulating water flow device of the present invention simulates different riverbanks and river channels to control variables in the simulation experiment from five aspects to explore the influence of certain specific factors on water quality indicators:

[0035] First, the influence of the change of the horizontal and vertical slope on the water quality can be explored. In this case, the horizontal and vertical slope angles are controlled by controlling the angle between the side plate 24 and the bottom plate 21 and the lifting and lowering of the vertical slope adjustment mechanism, so as to explore the influence of the horizontal and vertical slopes of the river on the water quality indicators;

[0036] Secondly, the influence of flow rate on water quality can be explored. The experimenter can control the opening and closing valves connected to the circulation pipeline and the steady flow tank to control the incoming water flow. The device sets an electromagnetic flowmeter in the circulation pipeline with a flow range of 0.08 to 1236 m 3 / h, with an accuracy level of ±0.5%R (0.5 parts per thousand) to achieve precise control of flow rate and analyze the impact of flow rate and velocity on water quality. In the later stage, the pulse flow rate can be set manually to further explore the impact of pulse flow rate on water quality indicators. At the same time, the water pump specifications can also be replaced to further explore the impact of a wider range of flow rate and flow on water quality indicators.

[0037] Third, we can explore the effect of aeration on water quality indicators by installing artificial aeration fans with a measurement range of 0.3 to 45 m / s and a wind temperature range of 0 to 45°. Electric fans are placed at equal intervals on the edge of the circulating water tank to simulate the effect of aeration on experimental water quality indicators;

[0038] Fourth, we can explore the impact of common hydraulic structures on water quality. We can install simulated dams and place removable and height-adjustable stainless steel plates or nylon canvas bags in the water tank to simulate water retaining dams and rubber dams. By comparing before and after, we can find out the impact of common hydraulic structures on water quality indicators. Later, we can place other river channel molds in the circulating water tank for further exploration. At the same time, changing the season of use of the circulating water tank, the quality of incoming water, etc. can further explore the impact of temperature, initial water quality, etc. on water quality indicators;

[0039] Fifth, we can explore the impact of river bank roughness on water quality and flow. We can paste a certain amount of simulated artificial grass on the river bank slope to simulate the riverbank vegetation under natural conditions, and find out the impact of river bank roughness on water quality indicators. Later, we can replace different types of simulated artificial grass on the river bank for further research.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A circulating water flow device for simulating different riverbanks and river channels, characterized in that: It comprises a bracket (1), a circulating water tank (2), a longitudinal slope adjustment mechanism and a circulating water device; The circulating water tank (2) is mounted on the bracket (1), one end of which is hinged to the bracket (1); the longitudinal slope adjustment mechanism is mounted on the bracket (1) below the middle of the circulating water tank (2) to support and adjust the horizontal angle between the circulating water tank (2) and the bracket (1); The circulating water tank (2) comprises a bottom plate (21), a front end plate (22), a rear end plate (23) and two side plates (24); the two side plates (24) are hinged to the two sides of the bottom plate (21) to form a V-shaped tank body with a V-shaped cross section with a variable opening angle; the front end plate (22) and the rear end plate (23) are respectively arranged at two ends of the V-shaped tank body and are clamped and sealed with the V-shaped tank body by a clamping mechanism; The bottom of the V-shaped trough is provided with heat insulation cotton (3), and a simulation auxiliary device is placed on the heat insulation cotton (3); A water outlet (25) is provided below the front end plate (22), a water inlet (26) is provided above the rear end plate (23), and the circulating water device connects the water inlet (26) and the water outlet (25) to circulate water into the V-shaped groove body; The longitudinal slope adjustment mechanism comprises a hydraulic cylinder (5), the cylinder body of the hydraulic cylinder (5) is hinged on the bracket (1), and the piston rod of the hydraulic cylinder (5) extends upward and the top end is hinged below the middle of the bottom plate (21); The clamping mechanism is a G-type clamp; The circulating water device comprises a water storage tank (6), a steady flow water tank (7), a submersible pump (8) and a water pipe (9); Water from the water outlet (25) of the circulating water tank (2) flows into the water storage tank (6). A submersible pump is arranged in the water storage tank (6) to pump the water from the water storage tank (6) into the steady flow tank (7) through the water pipe (9). The steady flow tank (7) is arranged on the rear end plate (23). The opening of the steady flow tank (7) is higher than the circulating water tank (2). After the steady flow tank (7) is filled, the water flows into the circulating water tank (2) from the water inlet (26).

2. The circulating water flow device for simulating different riverbanks and river channels according to claim 1, characterized in that: A PVC flow stabilizing pipe is provided in the flow stabilizing water tank (7).

3. The circulating water flow device for simulating different riverbanks according to claim 1, characterized in that: The simulation auxiliary device comprises one or more of a pebble block (4), an electromagnetic flow meter, a simulated artificial grass artificial aeration fan or a simulated dam.

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