Noise Control of Pressure Reducing Valves
Pressure reducing valves, also known as pressure reducing valves, are widely used in industrial production to reduce the pressure of a fluid flowing through a pipeline to a required level. In operation, the pressure reducing valve often produces noise, and this noise seriously affects the safe operation of the pipeline system and the working environment of people nearby. Therefore, it is necessary to take corresponding measures to control the noise of the pressure reducing valve.
The noise generated by the pressure reducing valve is mainly composed of three parts: mechanical noise, flow noise and aerodynamic noise. Mechanical noise is mainly generated by the action of mechanism parts such as valve core, guide sleeve and seat. Flow noise is generated due to the sharp change of flow rate or pressure generated by the action of the valve core. Aerodynamic noise is generated due to the flow of fluid across the valve core and the wall around the valve core. Therefore, to reduce the noise of the pressure reducing valve, the noise generated by these three parts needs to be addressed.
Generally speaking, measures should be taken from two aspects: structural design and installation. To reduce mechanical noise, the quality and structure of the valve should be improved, and the introduction of elastic components should be considered. Such as adding rubber gaskets and additional damping components to increase the damping effect. At the same time, the elimination of interference between parts can be realized by selecting proper material, changing the structure form, adjusting the concentricity, precision and clearance of parts.
In order to reduce flow noise, measures can be taken such as setting longer guiding sleeve and symmetric structure, optimizing large pipeline to reduce the impact of flow turbulence and using laminar flow structure, so as to ensure the uniformity of static pressure and reduce the generation of flow noise. As for aerodynamic noise, measures such as increasing the length and quality of the passage, changing the radius ratio of the passage, reducing the ratio of the sectional area and partial velocity, changing the flow direction and changing the vent orifice of the wall should be taken.
In addition, it is also necessary to pay attention to the installation to reduce the noise of the pressure reducing valve. In particular, attention should be paid to the installation, adjustment and vibration isolation and noise reduction treatment of the pressure reducing valve in the pipeline, so as to reduce the transmission of the noise to the outside, reduce the vibration of the valve itself and the pipeline, and thus achieve the purpose of reducing the noise of the pressure reducing valve.
In summary, the noise of the pressure reducing valve can be effectively controlled by improving the structural design, selecting appropriate materials, optimizing the flow style and using appropriate installation measures. It is of great significance to improve the environment, reduce the impact on personnel and ensure the smooth operation of equipment.
