A wide-spectrum fluid pressure pulsation attenuator for a composite hydraulic system

Abstract

The invention discloses a composite hydraulic system broad-spectrum fluid pressure pulsation attenuator. The two ends of a shell are provided with a front end cap and a rear end cap. A small-diameter inner pipe, a large-diameter inner pipe and a fluid attenuation assembly are fixedly mounted in the portions, between the front end cap and the rear end cap, of the shell. The two ends of the small-diameter inner pipe separately communicate with a fluid inlet and a fluid outlet. The pipe walls of the small-diameter inner pipe and the large-diameter inner pipe are both provided with damping holes. The fluid attenuation assembly comprises circular hole screen heads arranged at the two ends of the small-diameter inner pipe, a mesh enclosure particle assembly arranged in the small-diameter inner pipe and an elastic string barrel arranged between the small-diameter inner pipe and the large-diameter inner pipe. By adoption of the composite hydraulic system broad-spectrum fluid pressure pulsation attenuator, pulsation energy can be effective attenuated in the mode that a dissipation system and a mass-spring system are combined, fluid is guided to flow, the transmission speed is greatly decreased to control fluid fluctuation, the pulsation amplitude of the pressure fluid flowing through the attenuator is effectively and greatly decreased, the frequency bandwidth of pulsation attenuation is further broadened, broad spectrum and maximization of the attenuation effect are achieved, and the double-filtering effect of structure resonance and fluid resonance is achieved.

Description

technical field [0001] The invention relates to a pressure pulsation attenuator, in particular to a composite hydraulic system wide-spectrum fluid pressure pulsation attenuator. Background technique [0002] In the actual working conditions of the hydraulic system, the pressure and flow output from the outlet of the hydraulic pump are not absolutely stable, and due to the volume change of the hydraulic pump, component defects and other reasons, the outlet of the hydraulic pump will always output pressure fluid with a certain oscillation , the pressure pulsation in the hydraulic system will inevitably lead to flow pulsation. The coupling effect of pressure pulsation and flow pulsation brings unavoidable harm to the hydraulic system: the coupling pulsation will cause some components with the same natural frequency and pulsation frequency to resonate, which will not only cause fatigue damage to these components themselves, but also cause other components in the system. Vibrati...

AI Technical Summary

Problems solved by technology

The coupling effect of pressure pulsation and flow pulsation brings unavoidable harm to the hydraulic system: the coupling pulsation will cause some components with the same natural frequency and pulsation frequency to resonate, which will not only cause fatigue damage to these components themselves, but also cause other components in the system. Vibration of components; at the same time, system noise can also endanger the health of workers

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