Electromagnetic lever type water channel gate device for simulating instant dam break

Abstract

The invention belongs to hydraulics experimental model facilities and particularly relates to an electromagnetic lever type water channel gate device for simulating instant dam break. The device comprises a gantry type support, a gate door sheet and an electromagnetic lifting control device. A fixing plate is arranged on the gantry type support, and a guide groove matched with a vertical guide bar on the gate door sheet is fixed to the fixing plate. The electromagnetic lifting control device comprises an electromagnetic attraction disc, an electromagnet block, and a lever hinged to a hinge head fixed to a gantry cross beam. The two ends of the lever are connected with the gate door sheet and the electromagnetic attraction disc through steel cables respectively, and through the attraction effect of the electromagnet block on the electromagnetic attraction disc, instant opening and closing of the gate door sheet are achieved through the lever. Opening and resetting can be automatically achieved, the device is suitable for water channels of multiple sizes, mechanical oscillation generated in the opening process of a gate is greatly relieved, time and labor are saved, electromagnetic control is more efficient and convenient and rapid, and errors can be effectively reduced.

Description

technical field [0001] The invention belongs to hydraulic experiment model facilities, in particular to an electromagnetic lever type water tank gate device for simulating instantaneous dam breaks. Background technique [0002] The method of obtaining instantaneous dam-breaking water by opening the gate instantly in a rectangular tank has been used in various fluid-solid coupling experiments, and the interaction between the instantaneous dam-breaking water and its downstream structures is often used to simulate tsunami landing, Natural phenomena such as waves on deck. In addition, the experimental research data of the movement of dam-break water in the dry bed and the lower surface of the wet bed are often used to test the accuracy of various fluid-solid coupling numerical models. Around 2000, the European Union launched a series of studies on dam breaks (The Concerted Action on Dam-Break Modeling (CADAM) ), using a large number of rectangular tanks and opening the gates in...

AI Technical Summary

Problems solved by technology

Such experiments currently carried out must build expensive dam break test tanks for different experiments, instead of using the existing ordinary test tanks in the laboratory to carry out experiments

In addition, there are still the following defects in the current instant opening gate of the dam break tank: (1) Grooves need to be opened on the side of the tank where the gate is opened and at the bottom of the tank to block the gate to seal the water body, which not only damages the tank, but also allows fluid to flow through the groove When the flow state changes, the gate can only be set at the groove in the tank; (2) In order to achieve the purpose of opening the gate instantly, the gate is generally opened by falling heavy objects. Objects are generally carried by manpower, which is time-consuming and laborious. After the gate is opened, it must be manually stuck back to the water tank to start the next set of experiments, and it is difficult for heavy objects to fall stably, which often causes the whole device to shake seriously and affect the flow state. The repeatability of the experiment is poor and the error is large, which is not conducive to the smooth and fast progress of the experiment; (3) the gate and the water tank are integrated, and one gate can only be applied to a single water tank; (4) the gate is opened at a high speed and moves upward, At present, a rigid structure is generally used to forcibly stop it, which is likely to cause strong mechanical shocks and seriously endanger the stability of the entire structure.

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