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Principle Of AC Motor Dampers
Jun 16, 2017

An AC motor damper is a pressure vessel used to eliminate fluid pressure pulsation or flow pulsation in a pipe. Can play a stable fluid pressure and flow, eliminate pipeline vibration, protect the downstream instruments and equipment, AC Motor Damper increase the efficiency of the pump and so on. AC motor dampers are mainly two principles.

The liquid enters the pulse damper, and the gas blocked by the airbag is compressed; when the pressure drops, the compressed gas expands, and when the pressure of the liquid is increased, the pressure of the liquid is increased, And the pressure inside the pulse damper is pressed back to the pipe. AC motor dampers are common components that eliminate piping pulsations and are required accessories for volumetric pumps (eg metering pumps, pneumatic double diaphragm pumps, piston pumps, plunger pumps, peristaltic pumps and hose pumps). The AC motor damper can smooth the pulsation caused by the volumetric pump, slow down the system piping vibration and noise, and prevent the water hammer phenomenon. This type of AC motor damper is suitable for applications where the ripple frequency is less than 7Hz because if the frequency is too high, AC Motor Damper the diaphragm or airbag is too late to respond to the effect of eliminating pulsation;

The use of solid media directly to intercept the fluid in order to achieve the effect of buffer pressure pulsation or flow pulsation, such AC motor dampers for high frequency pulsation applications.

To select the appropriate AC motor damper, should first be based on the actual situation and process requirements to determine the required pulse to eliminate the rate of indicators, and then according to the technical indicators for quantitative selection.

Accurate AC motor dampers should be selected according to the flow, pressure, pump type, pump speed, pump cylinder number, pump phase difference (multi-stage pump), pulsation elimination rate, AC Motor Damper application purpose, pipeline fluid composition, pipe fluid density, Viscosity, pipe fluid temperature and other parameters of the comprehensive calculation and analysis to determine. Through the above parameters, the key need to calculate the amount of fluid pulse (that is, the pulse of the liquid sent by a pulse) and the pulse frequency. Combined with the pulse elimination rate indicators, you can initially calculate the required AC motor damper type and volume.

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