Device used for pipeline vibration testing

Abstract

The invention belongs to the technical field of flow induced vibration and relates to a device for pipeline vibration testing. The device comprises a driving mechanism, vibration isolation sections attwo ends, a U-shaped bent pipe section, a test piece, a visual pipe section, a pipeline supporting structure and a pressure measuring system, wherein the vibration isolation sections are arranged attwo ends of the device, the visual pipe section, the test piece and the U-shaped bent pipe section are sequentially connected between the two vibration isolation sections, the pressure test system isinstalled before and behind the test piece, the driving mechanism is arranged at one side of the U-shaped bent pipe section and is connected with the vibration isolation section, and the pipeline supporting structure is used for supporting the whole device. The device can simulate a vibration problem caused by the change of a flow field inside a pipeline and verify the numerical calculation modelof pipeline vibration. With a simple method adopted, the state of the pipeline can be accurately evaluated, and a pipeline vibration solution can be verified.

Description

technical field [0001] The invention belongs to the technical field of flow-induced vibration, and in particular relates to a device for pipeline vibration test. Background technique [0002] At present, the pipeline vibration caused by the sudden change of the fluid flow field inside the pipeline is relatively common in nuclear power plants, and the flow channel changes at valves and throttles are important excitation sources for pipeline vibration. For example, the valve as a throttling part has a great influence on the flow state, the flow state has a large change, the flow rate increases, turbulent flow excitation, cavitation and other results are generated. However, there are no mature evaluation tools for such vibration problems, and detailed mechanical analysis calculations and measurements must be carried out for evaluation. This affects the efficiency of pipeline reliability evaluation on the one hand, and more importantly, due to the lack of clear standards and pr...

AI Technical Summary

Problems solved by technology

However, there are no mature evaluation tools for such vibration problems, and detailed mechanical analysis calculations and measurements must be carried out for evaluation. This affects the efficiency of pipeline reliability evaluation on the one hand, and more importantly, due to the lack of clear standards and processes, whose calculation accuracy is easily affected by the environment and experience

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