Pipeline system three-way active and passive vibration absorbing ring

Abstract

The invention belongs to the technical field of vibration noise control, and particularly relates to ship pipeline vibration noise control and a pipeline system three-way active / passive vibration absorbing ring. According to the technical scheme, the pipeline system three-way active / passive vibration absorbing ring comprises a ring-shaped clamp (1) and six single-degree-of-freedom active / passive dynamic vibration absorbers (2). The pipeline system three-way active / passive vibration absorbing ring provided by the invention adopts an active vibration suppression mode and a passive vibration suppression mode; in the active vibration suppression mode, a vibration signal detected by a sensor in a pipeline structure is utilized, the coil current of the six single-degree-of-freedom active / passive dynamic vibration absorbers on the ring-shaped clamp is controlled by adopting a self-adaptive control algorithm, the output force which is opposite to the pipeline line-spectrum vibration phase and equivalent to the pipeline line-spectrum vibration amplitude is generated by utilizing the electromagnetic induction principle, thereby offsetting the pipeline line-spectrum vibration and achieving active vibration suppression; and in the passive vibration suppression mode, a diaphragm spring being moderate in rigidity is mounted for adjustment of the own rigidity of each six single-degree-of-freedom active / passive dynamic vibration absorber, thereby achieving the optimal suppression performance of the pipeline system three-way active / passive vibration absorbing ring on one line spectrum.

Description

technical field [0001] The invention belongs to the technical field of vibration and noise control, in particular to the control of vibration and noise of ship pipelines. Background technique [0002] Ships use a large number of sea piping systems to provide cooling sea water for equipment. Among them, the water pump connected to the pipeline will vibrate during operation, which will arouse the vibration of the pipeline structure, so that the vibration will be transmitted to the hull through the pipeline support or the sea pipeline, causing the vibration of the hull and generating radiated noise, which seriously affects the ship. Acoustic stealth performance of the boat. Therefore, research and development of vibration control devices for pipeline systems has become an urgent problem to be solved. [0003] Although passive vibration reduction technologies such as rubber-type pipeline supports are currently used, effective suppression of high-frequency component vibration o...

AI Technical Summary

Problems solved by technology

However, most of the traditional dynamic vibration absorbers are single-degree-of-freedom passive vibration-absorbing devices. The vibration suppression effect is limited and can only be aimed at a single line spectrum, which cannot satisfy the vibration suppression of multi-line spectrum and multi-direction in the pipeline system.

Images