Double-layer vibration damper with temperature varying pipeline capable of stretching freely

Abstract

The invention discloses a double-layer vibration damper with a temperature varying pipeline capable of stretching freely, which belongs to the technical field of vibration damping and comprises a vibration damping bracket used for supporting a pipeline. The vibration damping bracket is fixed on a panel under the vibration damping bracket through symmetrically installed vibration damping bracket supports, and a spring absorber is installed under a panel. The spring absorber comprises a vibration damping spring, a spring vibration damping base plate, a rolling steel ball and a base support. One end of the vibration damping spring is installed on the lower end face of the panel, the other end of the vibration damping spring is installed on the spring vibration damping base plate, and the spring vibration damping base plate is installed on the base support through the rolling steel ball and is capable of rolling on the base support. The double-layer vibration damper enables a pipeline to be arranged in the support of the double-layer vibration damper, moves with the change of the axial size and the radial size of the pipeline and maintains the position of a damping system in the pipeline. The double-layer vibration damper has the advantages of being capable of enabling multiple-dimension size change of the pipeline in the vibration state caused by temperature change to be removed through the rolling steel ball under the double-layer damping system and simple in structure.

Description

Technical field [0001] The invention relates to a double-layer damping device for free expansion and contraction of a temperature-changing pipeline, which belongs to the technical field of vibration damping, and in particular can adapt to multi-dimensional dimensional changes of thermal expansion and cold contraction of steam pipelines. Background technique [0002] Pipeline vibration is caused by the internal fluid pressure and flow velocity. If the pipeline is subjected to vibration for a long time, fatigue damage will occur, especially at the stress concentration point. Fatigue damage can lead to pipeline breakage and medium leakage, causing serious production accidents. At present, there are many measures and methods to solve pipeline vibration. One is to change the natural frequency of the system by changing the damping of the system or changing the stiffness of the system to achieve the purpose of vibration elimination. One is the result of eliminating airflow vibratio...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing rubber damping brackets that cannot move freely due to changes in the axial and radial dimensions or displacement of the pipeline caused by temperature changes, the present invention provides a double-layer vibration damping device for freely expanding and contracting temperature-changing pipelines. Can adapt to the multi-dimensional size change of steam pipeline thermal expansion and contraction

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