Dam-break circulation water tank

Abstract

The invention discloses a dam-break circulation water tank which comprises an experimental water tank, a dam-break gate, a water storage tank, a drainage gate, a pump tank, a circulation water pump, awater inlet pipe, an upstream water injection pipe, a downstream water injection pipe, a drainage pipe and a water guiding pipe. The dam-break gate is arranged in the experimental water tank, and isperpendicular to the direction of water flow in the experimental water tank. The water storage tank is located directly under the experimental water tank and is connected with the water outlet of theexperimental water tank. The drainage gate is located in the experimental water tank and is near the water outlet of the experimental water tank. The pump tank is located on the side of the water storage tank and is connected with the water outlet of the water storage tank, and the absolute elevation is smaller than the absolute elevation of the water storage tank. The water inlet pipe, the upstream water injection pipe, the downstream water injection pipe and the water guiding pipe are connected through four-way connection, and the circulation water pump is connected with the water guiding pipe. According to the invention, the device can complete dam-break repeated experiments efficiently and conveniently, and can be used for a wave making experiment and a uniform water flow circulation experiment; the function of gradient adjusting can work well with each hydrodynamic experiment; and the applicable range is greatly improved.

Description

technical field [0001] The invention relates to hydrodynamic experiment facilities, in particular to a dam-breaking circulating water tank. Background technique [0002] For hydrodynamic prototype experiments, it is difficult to control various parameters separately, and the cost is high. For some projects, it is sometimes impossible to conduct prototype experiments before completion. Therefore, most current hydrodynamic experiments use model experiments. In the hydrodynamic model experiment, some problems can be solved by theoretical analysis or numerical calculation; however, the theoretical solution can only give the mean value of the flow field but not the real flow field fluctuation evolution process. In addition, the theoretical value is used to calculate the structural force There will be a lot of errors; numerical calculations cannot simulate the flow field well for complex wave flows, and the calculation efficiency is low; in addition, some problems are not clear be...

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Problems solved by technology

[0004] 1. The functions of the experimental water tanks used in the existing hydrodynamic experiments are relatively single, and the experimenters often need to build expensive experimental water tanks according to the needs of different experimental directions, and it is not convenient to use the same experimental water tank to complete various types. Hydrodynamic experiment

[0005] 2. General hydrodynamic experiments, especially dam break experiments, often require multiple sets of experiments due to the randomness of experimental data collection. After the dam break gate is opened, the upstream liquid will fill the entire tank. Before starting the next set of experiments, it is necessary to After the gate is closed, the downstream water body is manually moved back to the upstream. Since the downstream part of most experimental tanks usually adopts a closed design, this process is time-consuming and laborious, which reduces the efficiency of repeated experiments.

At present, most of the circulating water tanks usually realize the water circulation of the experimental water tank by setting a suction pipe in the downstream of the water tank to cooperate with the circulating water pump. Compared with manual drainage, this improved method improves the drainage efficiency to a certain extent, but when the experimental water tank When there is a lot of water in the tank, it still takes a long time to use this method to drain the experimental tank, and the water cycle of the tank cannot meet the needs of high-velocity uniform flow circulating water experiments.

[0006] 3. Most of the current hydrodynamic experiments adopt the method of directly setting the experimental water tank horizontally on the ground. This experimental water tank often cannot meet the needs of the flexible slope test in the hydrodynamic experiment.

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