Vibration absorption device used for active vibration attenuation of pipeline

Abstract

The invention discloses a vibration absorption device used for active vibration attenuation of a pipeline. The vibration absorption device comprises a split-type flange and execution mechanisms, wherein each execution mechanism comprises a guide rail and slide block mechanism and an actuator, each guide rail and slide block mechanism comprises a guide rail fixed to the split-type flange and a slide block matched with the guide rail, a rotor of each actuator is integrally connected with the pipeline through a pipeline connecting plate, a stator of each actuator constitutes a vibration absorption block with the corresponding slide block after being fixed to the slide block, and is connected with the outer end of the corresponding guide rail through a plate spring, the slide blocks are connected with the pipeline connecting plates through spiral springs, and are provided with displacement sensors facing the pipeline connecting plates, and the output ends of the displacement sensors are connected with a controller. According to the vibration absorption device, by using the displacement sensors to conduct measurement and output relative displacement signals between the vibration absorption blocks and the pipeline, and reasonably adjusting the proportion of signals and the differential feedback coefficient, working current of the execution mechanisms is controlled so that energy of vibration of the pipeline can be absorbed through motion of the vibration absorption blocks, and in this way, the purpose of lowering the vibration of the pipeline is achieved.

Description

technical field [0001] The invention belongs to the field of vibration control, in particular to a vibration absorber device used for active vibration reduction of pipelines. Background technique [0002] In the fields of machinery, chemical industry, aerospace and other fields, piping systems are widely used in industrial production and equipment manufacturing as the main way of raw material transportation and heat exchange. The pipeline system plays a very important role in industrial production and urban life. It is crucial to ensure the normal operation of various equipment in industrial production, the normal operation of urban life, and the safe navigation of aircraft and ships. [0003] In the actual operation of the pipeline, due to structural changes such as elbows, variable diameters, and tees in the pipeline, and the periodic and intermittent changes in the suction and displacement of the compressors and pumps at the front and rear ends of the pipeline system, the...

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Problems solved by technology

[0006] However, in the actual vibration process of the pipeline, there are often vibrations of multiple frequencies. At this time, the traditional passive vibration reduction device and semi-active vibration reduction device cannot reduce the vibration of different frequencies at the same time.

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