Frequency dividing combined pressure fluctuation attenuation device and method

Abstract

The invention belongs to the technical field of silencing and in particular discloses a frequency dividing combined pressure fluctuation attenuation device and method. The device comprises a body, anenergy accumulator and an attenuator, wherein the body is of a hollow structure and is taken as a conveying channel of a to-be-attenuated fluid; the energy accumulator is arranged on the body and is connected to the conveying channel; the attenuator is arranged around the energy accumulator and is also connected to the conveying channel. Therefore, pressure fluctuation of the fluid is attenuated as the energy accumulator and the attenuator are matched. The device can reduce fluid noise and pipeline vibration effectively and is suitable for multi-stage frequency attenuation of pressure fluctuation of various fluids such as water, hydraulic oil and gas.

Description

technical field [0001] The invention belongs to the technical field of noise reduction, and more specifically relates to a frequency division combined pressure pulsation attenuation device and method. Background technique [0002] In order to eliminate the pressure pulsation of the fluid power system and achieve the purpose of reducing noise and vibration, it is generally necessary to install a pressure pulsation muffler, also called a pressure pulsation attenuator, in the pipeline of the system. At present, common pressure pulsation attenuators include accumulators and Helmholtz mufflers. However, the traditional accumulator has a low natural frequency, and its effect of reducing low-frequency pressure pulsations is better, and the effect of reducing high-frequency pressure pulsations is poor. Traditional accumulators cannot eliminate low-frequency pressure pulsation and high-frequency pressure pulsation at the same time, that is, it is impossible to achieve multi-frequency...

AI Technical Summary

Problems solved by technology

At present, common pressure pulsation attenuators include accumulators and Helmholtz mufflers. However, the natural frequency of traditional accumulators is low, and the effect of reducing low-frequency pressure pulsations is better, and the effect of reducing high-frequency pressure pulsations is poor. Traditional accumulators cannot eliminate low-frequency pressure pulsation and high-frequency pressure pulsation at the same time, that is, it is impossible to achieve multi-frequency attenuation of pressure pulsation; while Helmholtz mufflers are often used as gas mufflers, and their natural frequency is relatively large, so they are used for other fluids For example, when water and hydraulic oil are used, their volume and mass need to be designed larger

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