Process of turbulence will produce pneumatic valve or the vibration of the pneumatic valve components

the pneumatic valve is one of the most obvious and the most uncomfortable question is noisy. For humans, not only interfere with noisy life, and it also can lead to permanent hearing failure and unsafe working conditions. Research shows that when exposed to high noise levels for a long time, hearing damage. The hearing damage is progressive and irreversible, starting with failure of high frequency, top listening to a malfunctioning will finally lead to a lower frequency, it affected the ability to listen to natural language. When suffering from low frequency noise, the function of the human organs such as heart or liver, may also be affected. In addition, the noise and associated vibration may also affect the pneumatic valve performance and lead to fatigue pneumatic valve line and the adjacent equipment. In essence, when vibration produces a wide range of changes in atmospheric pressure, will produce noisy, and then as a noisy to the eardrum. [eardrum with sound It is ft/s ( m/s） Or m/h ( km/h） ] To spread. The noise of the pneumatic valve can arise in many different ways, however, is the most common cause of the turbulence generated by the pneumatic valve geometry, and caused by diffusion downstream piping. In many cases, not noisy pneumatic valve body diffusion, because pneumatic valve body itself is rigid and sturdy. Process of turbulence will produce pneumatic valve or the vibration of the pneumatic valve components. Is noisy by a pneumatic valve assembly, pressure fluctuation, the vibration generated by collision or by fluid obstacles in logistics, such as pneumatic valve, pneumatic valve plate closed or other components produced by the vibration. When closing element hammered its guide, for a long time will cause the noise of the explosion. Because of its frequency level lower than Hertz, it don't interfere with the normal spectators. But the pneumatic valve stem or shaft with guide of explosion can damage limit guidance and pneumatic valve seat surface. Pneumatic valve parts of explosion noise another pair of benefits is the secondary manic sound pressure pneumatic valve generated within the turbulent provide warning information, so before the accident correction is required. Vibration can also be produced by some on its natural frequency resonance of the pneumatic valve parts or accessories, they are often at a lower level (noisy Less than a dBA. This type is characteristic of single tone or noisy buzz ( Frequency in Hz). . . , it produces high levels of stress in materials, and make the parts material caused by fatigue and weak. Can also be used by the fluid power or noisy caused by aerodynamic of fluid. For liquid, fluid power is noisy by the result of turbulence in the flow, cavitation and flash, or in the fluid through the cross section of contraction caused by the high speed. All in all, produced by liquid logistics does not produce high levels of noisy and noisy endure for staff. In severe air pockets or flash operation, the noisy can achieve higher level must undergo change process or in the air-pocket components installed in the pneumatic valve for disposal.