Full-band working condition adaptive hydraulic filtering equipment with S-shaped cavity

Abstract

The invention relates to full-band working condition adaptive hydraulic filtering equipment with an S-shaped cavity. An input tube and an output tube of the equipment are respectively connected to two ends of a shell; an S-shaped elastic thin wall is mounted in the shell; series resonance cavities I and II and a parallel resonance cavity are formed between the S-shaped elastic thin wall and the shell; the series resonance cavities I and II are separated from each other by an elastic partition; a plurality of conical damping holes are uniformly formed in the S-shaped elastic thin wall; a plurality of conical inserting tubes are uniformly arranged on the elastic partition and communicate with the series resonance cavities I and II; an inserted type H-shaped filter is positioned in the parallel resonance cavity; another inserted type series H-shaped filter is positioned in the series resonance cavities I and II; and the two inserted type H-shaped filters are symmetric axially and form an inserted type series parallel H-shaped filter. Pulsating pressure of high, middle and low bands in a hydraulic system can be attenuated, so that the full-band working condition adaptive filtering effect is achieved.

Description

【Technical field】 [0001] The invention relates to a hydraulic filter device, in particular to a hydraulic filter device with an S-shaped cavity capable of adapting to full-frequency working conditions, and belongs to the technical field of hydraulic devices. 【Background technique】 [0002] The hydraulic system has the characteristics of high power density and good operation stability, and has been widely used in the engineering field. With the development of hydraulic technology towards high pressure, high speed and large flow, the influence of pressure pulsation inherent in hydraulic system is becoming more and more prominent. Relevant studies have shown that when the pressure pulsation amplitude exceeds 10% of the working pressure of the hydraulic system, the pipeline will form a higher pressure and cause damage to the pipeline system; when the pressure pulsation amplitude exceeds 2-10% of the hydraulic system working pressure , pipelines and valves will wear and tear, en...

AI Technical Summary

Problems solved by technology

But the current resistance filter has the following disadvantages: (1) The pressure pulsation in the hydraulic pipeline is a function of time and position, and the hydraulic filter installed in the position cannot adapt to the variable working conditions; (2) the resistance filter is only suitable for Specific frequency points and narrow frequency bands have good filtering effects, and broad-spectrum filtering cannot be achieved; (3) The attenuation effect of hydraulic filters on pressure pulsations is not ideal; (4) There is no filtering effect on flow pulsations

The filtering effect of the vibration damping muffler of this patent is closely related to the radius and thickness of each filter unit on the elastic thin plate. Since there are multiple filter units on the elastic thin plate to achieve broad-spectrum filtering, the radius and thickness of each unit are different. It is limited, so it affects the filtering effect; at the same time, the vibration damping muffler of this patent does not solve the problem that the pressure pulsation changes with the position, and the adaptability to changing working conditions is not good; it has no filtering effect on the flow pulsation

Images