After testing and environmental research, it can be known that the noise of the pump system is transmitted through two main ways, namely through the air borne noise and through the floor wall and ceiling spread structure noise. Repair welding repair, weld defects need to exceed the standard container welding technology evaluation. Because the steel plate and pipe etc. and basically belongs to the carbon steel, the steel plate and pipe welding process qualification assessment process available instead of steel plate. The way to suppress these two kinds of noise is very different, so we should deal with it separately.
Structural noise should be resolved by the method of isolating the structural noise and vibration isolation to suppress the noise in the air. Two pump noise analysis and control method of pump noise can be divided into two parts, mechanical and hydraulic noise. There are many types of pumps, in general, the centrifugal pump, the pump's hydraulic noise is much greater than the mechanical noise, so focus on the analysis of the centrifugal pump.
Water is the main source of noise noise caused by the five aspects of noise vortex noise of the impeller inlet velocity distribution uneven caused by noise caused by the pump impeller cavitation caused by the noise caused by the surge of the clear noise source, noise control measures will have, such as relations between gap relationship between load and noise level and the rear edge of the blade and the volute tongue.
