Electromagnetic lever-type water tank gate device for simulating instantaneous dam failure

Abstract

The invention belongs to a hydraulic experimental model facility, in particular to an electromagnetic lever-type water tank gate device for simulating an instantaneous dam break, comprising a gantry-type bracket, a gate door plate and an electromagnetic lifting control device. The gantry type bracket is provided with a fixing plate, and the fixing plate is fixed with a guide groove matched with the vertical guide bar on the gate plate of the gate. The electromagnetic lift control device includes an electromagnetic adsorption plate, an electromagnet block and a lever hingedly connected with a hinge joint fixed on the gantry beam. The two ends of the lever are respectively connected with the gate door plate and the electromagnetic adsorption disk through the steel cable. Through the adsorption of the electromagnet block on the electromagnetic adsorption disk, the lever is used to realize the instant opening and gate entry of the gate door plate. The present invention can be automatically opened and reset, suitable for various sizes of water tanks, greatly reduces the mechanical shock during the opening process of the gate, saves time and labor, the electromagnetic control is more efficient and convenient, and can effectively reduce errors.

Description

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

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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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