Dynamic vibration absorption device suitable for pipeline

Abstract

The invention discloses a dynamic vibration absorption device suitable for a pipeline. The dynamic vibration absorption device comprises a first vibration reduction box and a second vibration reduction box, wherein the first vibration reduction box and the second vibration reduction box are matched to be used for being clamped on the pipeline, each of the first vibration reduction box and the second vibration reduction box internally comprises a fixed plate and a vibration reduction mechanism, one end of each vibration reduction mechanism is fixed to the corresponding fixed plate, the other end of the vibration reduction mechanism moves freely, an adjusting block is arranged on the vibration reduction mechanism, and the adjusting block is used for changing the vibration frequency of the vibration reduction mechanism. According to the dynamic vibration absorption device suitable for a pipeline, the rigidity of an adjusting beam is changed by adjusting the position of the adjusting block on the vibration absorption mechanism, the vibration frequency of the vibration absorption mechanism is changed, the performance of the vibration absorber is adjusted, a better vibration absorption effect is achieved by utilizing the principle of dynamic vibration absorption, and effective vibration absorption of the pipeline is achieved through clamping of the two vibration reduction boxes.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant pipeline protection and vibration reduction, in particular to a multi-directional tunable dynamic vibration absorption device for nuclear power plant pipelines. Background technique [0002] The number of pipelines in nuclear power plants is large and the arrangement is complex. During the operation of the unit, the phenomenon of weld cracks or fractures caused by the alternating stress behavior of the pipeline system occurs from time to time. Once the pipeline fails, it will cause the unit to be forced to shut down at light level, or cause serious accidents involving casualties. [0003] According to on-site experience feedback, the main failure mode of nuclear power plant pipelines is fatigue cracking at the welds. Usually, methods such as improving the welding process and adding support frames are used to prolong the life of the pipelines. In the existing research, such as patents ...

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Problems solved by technology

Although the above scheme can protect the pipeline welds from a technical level, it has problems such as high deployment cost, poor maintainability and poor flexibility, and cannot meet the protection requirements of pipeline welds under complex working conditions.

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