Fluid-solid coupling experiment platform based on influence of flow velocity on cantilever fluid conveying pipe

Abstract

The invention discloses a fluid-solid coupling experiment platform based on the influence of the flow velocity on a cantilever fluid conveying pipe. The experiment platform is composed of an experiment table, an excitation table, a pulse motor, a flange, a water tank, a camera and the like. The flange decouples transverse vibration displacement and axial vibration displacement and only retains axial vibration displacement, the water pump adopts a pulse water pump to ensure stable pulse flow velocity, the vibration excitation table and the hard tube are connected through a specially designed clamp, all required experiment devices are basic experiment devices used in experiments, in the way, what is guaranteed is that the experiment can meet the requirement for accurately measuring the influence of the flow velocity on the cantilever fluid conveying pipe, experiment equipment is not wasted, local materials are conveniently used, the experiment cost is reduced, the influence of the flow velocity on the vibration mode and the vibration frequency of the fluid conveying pipe is measured through a relatively simple experiment device, and the result accuracy is guaranteed.

Description

technical field [0001] The invention relates to the technical field of fluid-solid coupling flow delivery pipelines, in particular to the influence of experimentally measured flow velocity on the vibration of flow delivery pipelines. Background technique [0002] Fluid piping systems are widely used in power, petroleum, chemical industry, ships, aircraft and daily life. Fluid pipelines are used to transmit mass flow, momentum flow, and energy flow. At the same time, there are fluid pressure pulsations and structural vibrations of the pipe wall in the piping system, which may cause damage to the piping system in severe cases. There are many kinds of vibration waves in the fluid pipeline, and the vibration mechanism is very complicated. At the same time, vibration and accompanying noise also cause environmental pollution. The vibration of fluid pipeline is a typical fluid-solid coupling vibration. Fluid-structure coupled vibration is also called fluid-induced vibration. ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is exactly in order to overcome the difficulty mentioned in the background technology, the experimental device that is used to measure the influence of flow velocity on the cantilever flow tube at present is relatively large, the equipment is heavy, the cost of the experimental equipment is high, and some parts inside are inconvenient to change. It is mostly used in fluid experiments, and there is no simple experimental device specially used for measuring cantilever flow pipes. In order to overcome this difficulty, the present invention designs a relatively simple experimental platform to measure the influence of flow velocity on vibration frequency. The present invention is the largest The advantage is that it is very convenient to change the experimental equipment if there is a problem. In addition, in order to ensure the accuracy of the experiment, some parts and fixtures are specially designed in the present invention to achieve the desired effect.

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