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Open type water inlet tank for river model test

A river engineering model and open-type technology, which is applied in the field of open-type water inlet tank for river engineering model test, can solve problems such as energy dissipation, and achieve the effects of strong operability, real simulation effect and wide application range.

Inactive Publication Date: 2018-08-07
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual model tests, most of them are large flow tests. Large flow rates usually produce relatively high flow velocity through pipes with small diameters. It is difficult to avoid the inflow of model tests with large kinetic energy, and energy dissipation becomes a big problem.

Method used

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  • Open type water inlet tank for river model test
  • Open type water inlet tank for river model test
  • Open type water inlet tank for river model test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: It can be seen from the accompanying drawings that this river engineering model test is an open water inlet tank, which is used to simulate the incoming water from the upper reaches of the river, including a water tank body, the top of the water tank body is open, and the water tank body The body span is located in the width direction of the upstream of the simulated river,

[0027] The water tank body includes a base plate and four side plates, and the four side plates are successively connected end to end and sealed and vertically fixed around the base plate,

[0028] The side plate of the water tank facing the downstream side of the river is provided with several water outlet holes, and the water outlets are distributed on the entire surface of the side plate of the water tank facing the downstream of the river. This model is an inlet tank designed for the section height of the upstream channel or the reservoir model. Since the water depth of the upstre...

Embodiment 2

[0035] Embodiment 2: The water outlet holes are distributed on the upper part of the side plate of the water tank facing the downstream side of the river. Others are the same as in Example 1. The water inlet box is designed for a large-scale river engineering model with a simulation length greater than 100Km. Since the upstream and downstream spans are relatively large, and the river course has a certain slope (generally >1 / 100000), according to the river engineering model test regulations, the upstream and downstream The vertical height difference is large (>1m). In view of this phenomenon, the height of the upstream is greater than 1m higher than that of the downstream. If the downstream riverbed is placed on the ground, the upstream riverbed will be higher than 1m, which will make it difficult for the upstream to enter the water. Water leakage, if the water inlet tank is raised, the cost of the water inlet tank will be increased, and the management cost will also be increa...

Embodiment 3

[0037] Embodiment 3: The water outlet holes are distributed in the lower part of the side plate of the water tank facing the downstream side of the river. Others are the same as in Example 1. In the traditional river engineering model test, the inflow water has unstable flow velocity, unstable water level and unstable flow state. In the process of the river engineering model test, according to the requirements of the river engineering model test regulations, it is necessary to adjust the flow state of the influent to make the influent stable and maintain a certain water level and a certain flow rate. One-sided water intake will make the flow state of the water tank turbulent, forming strong turbulence in the water outlet direction, and forming a weakly disturbed dead water area in the backwater direction, which is easy to form dirt deposits.

[0038] Aiming at the problem of large water disturbance in the traditional water inlet tank, a double water inlet hole is designed to ...

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Abstract

The invention discloses an open type water inlet tank for a river model test. The water inlet tank is used for simulating upstream incoming water of a watercourse and is characterized by comprising awater tank body, the top of the water tank body is open, the water tank body is located in the width direction of the upstream of the simulant watercourse, a plurality of water outlet holes are formedin a side plate, facing the downstream side of the watercourse, of the water tank body, water inlet holes are formed in side plates, located on river banks on the two sides of the simulant watercourse, of the water tank body, water inlet pipes are fixedly connected in the water inlet holes and communicate with the interior of the water tank body, and the water is conveyed from the water inlet pipes towards the interior of the water tank body, flows out of the water outlet holes and enters the simulant watercourse so as to simulate the upstream water flow of the watercourse.

Description

technical field [0001] The invention relates to an open water inlet tank for a river engineering model test, and belongs to the technical field of river engineering model tests. Background technique [0002] The water supply of the water tank is one of the key technologies of the river engineering model test. Any river engineering model test needs water supply to carry out relevant tests. Therefore, the water tank for the model test is directly related to whether the river engineering model simulation can be carried out normally. [0003] During the river engineering model test, if the pipeline is directly connected to the model river bed, it will seriously interfere with the actual water level and flow velocity of the river and other hydrodynamic parameters, and it will also cause scour to the river, which will directly lead to the failure of the model test. In a normal model test, the upstream will maintain a slow overflow or a uniform flow close to no flow velocity. At th...

Claims

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Application Information

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IPC IPC(8): E02B1/02
CPCE02B1/02
Inventor 宋为威许青逄敏逄勇罗缙傅星乾宋达昊胡祉冰王茜甄自强瞿一清张鹏
Owner HOHAI UNIV
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