Low-noise valve element device based on bionic structure vein fractal

Abstract

A low-noise valve element device based on bionic structure vein fractal comprises a sleeve body, the sleeve body is of a hollow cylinder structure, the top face and the bottom face of the sleeve body are each provided with an annular protruding structure, a sleeve upper cover is installed on the top face of the sleeve body in a matched mode, and a sleeve lower cover is installed on the bottom face of the sleeve upper cover in a matched mode; a plurality of fluid channels with vein fractal structures are circumferentially distributed on the plane of the sleeve body, and the structure of each fluid channel is as follows: a first-stage flow channel is sequentially arranged from the inner wall surface to the outer wall surface of the sleeve body, an outlet of the first-stage flow channel is divided into two paths to form a second-stage flow channel, and a third-stage flow channel is arranged at an outlet of each second-stage flow channel; a single third-stage flow channel is divided into two paths to form a fourth-stage flow channel; the multi-stage flow dividing flow channel is arranged, the flow channel is expanded and slowed down at equal ratio, a resonant cavity is arranged in each branch flow channel so that stable pressure reduction and speed control of high-pressure fluid can be achieved, and the resonant cavity is formed through a short pipe of a flow channel bypass and a vertical channel so as to further conduct low and medium frequency noise reduction on the fluid.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and noise reduction of fluid machinery, pipelines and valves, in particular to a low-noise valve core device based on bionic structure leaf vein fractal. Background technique [0002] Control valve is a valve type commonly used in industrial pipeline systems, mainly for pressure distribution and flow adjustment of pipelines. [0003] Generally speaking, the most commonly used control valve spool structure is a conical structure, and the conical shape cooperates with the round hole of the valve body to form a throttling effect, thereby changing the pressure distribution state of the flowmeter in the pipeline system. However, this throttling structure is accompanied by relatively strong cavitation and turbulent pressure fluctuations when the opening is small, and produces significant air noise, flow noise, and valve body vibration. These vibration noises will inevitably have a negative i...

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Problems solved by technology

[0005] Aiming at the disadvantages of high noise, vibration and potential safety hazards in the adjustment process of the control valve in the existing production technology and engineering application mentioned above, the applicant provides a low-noise valve core device based on the bionic structure leaf vein fractal, which has multi-stage shunt The flow channel and the flow channel are enlarged and reduced in equal ratio, and the resonance cavity is built in each branch flow channel to realize the steady pressure reduction and speed control of the high-pressure fluid, and the resonance cavity is formed by the short pipe and the vertical channel bypassing the flow channel to further improve the fluid flow. Medium and low frequency noise reduction

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