The oscillation is caused by media of injection fluid and fluctuating, the initiation is comprised of the valve outlet velocity is too fast, pipeline settlement is not reasonable and valve parts rigidity is not enough, and so on. Reduce the processing method is mechanical vibration noise, preset reasonably to reduce the gap pressure valve bushings and the valve stem, machining precision and the natural frequency and activity of parts rigidity, accurately choose material, etc. The initiation of noise reducing pressure valve, mechanical oscillation of zero when the fluid flow pneumatic - valve device will initiation machinery vibration, mechanical vibration and can be divided into two ways: (1) low frequency oscillation. (2) the cavitation noise, i. e. , reduce the pressure valve in the process of reduced pressure, when the fluid velocity reaches a certain value, the fluid ( Liquid) Set out to the liquid gas, when the liquid in the bubble son suffered pressure reaches a certain value, it will explode. Q: reduce the pressure valve is mainly comprised of noise a: reduce the pressure valve is mainly comprised of noise can be divided into three categories as follows: 1. Reduce the pressure valve mechanical vibration noise; 2. Fluid dynamic noise; 3. Aerodynamic noise. Second, the fluid dynamics of fluid dynamic noise is noise of fluid passes through the lower pressure Industrial Valves to reduce pressure mouth after the initiation of turbulent flow and eddy current, the initiation of the process can be divided into two phases: (1) electric actuators turbulence noise, namely by the turbulent fluid and reduce the pressure in the valve or piping appearance interaction and initiation of the noise, the frequency and noise level are low, average noise is not a problem. Self-reliance type stem valve this, but also to note Marine valve means relative to the disc of the fluid flow direction of medium. The shock wave is lead to reduce the pressure valve cavitation and noise is a major factor. 。 When the explosion bubble son, want to in the part of the pressure and shock wave initiation of tall, self-reliance type regulator at the shock pressure of up to 196 mpa, core, but far away from the explosion pressure decay rapidly. (2) the high frequency oscillation. This kind of mechanical oscillation noise has nothing to do with the medium flow rate, mostly because of lower default not reasonable initiation pressure valve itself. Third, aerodynamic noise when steam compressible fluid through a lower pressure valve in the lower part, the fluid mechanical energy change for sound energy initiation to sum up, basically, reducing pressure valve initiation noise were associated with its own preset and production process. The oscillation in the natural frequency and excitation, as a result of media flow to encourage frequency are exactly the same, hydrodynamic stem valve actuating resonance, it is a way of reducing pressure valve within a certain range to reduce pressure of initiation, and once conditions changes slightly, the noise is very big change. Reduce the mechanical vibration noise processing method is in default to reduce pressure valve, it is important to reduce the lower pressure valve pressure value stem below the critical value, and it is probably best & amp; Delta; P here at first, due to reduction of pressure valve actually reduce pressure value & amp; Delta; P on initial value, the liquid to the initiation of cavitation, and noise will increase rapidly. Notes to the order: The national standard) A, A: B: product name, model, nominal size medium and temperature, pressure range C: whether there is attachment, delivery time, and special requirements so that we can correct selection for you. Second, if the valve has been selected by design unit of our company model, please order according to the valves parameters directly with our sales center. Three, it is very important when you use the occasion or the environment is more complex, would you please provide design drawings and detailed parameters, our engineers experts will concentrate on review and analysis for you. We can provide you with professional solutions, including design, customization, complete, operation and service. We've been working on the valve leader in the field of industry, to provide you with the latest knowledge of the valve, the best service, best technical adviser. Thank you for visiting our website, if you have any questions, you can call us, we will be dedicated to provide you with quality services. The factory provides professional ball valve, butterfly valve, gate valve, globe valve, check valve, relief Industrial Valves, safety valve, Marine Industrial Valves, oil valve, hydraulic control valve and other kinds of valves.
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