Diaphragm Pulsation Damper

Diaphragm Pulsation Damper

The diaphragm pulsation damper is a device used to control the flow of liquid or gas and provide a damping effect. It is a standard component for eliminating pipeline pulsation and a necessary accessory for metering pumps.

The diaphragm damper can alleviate the pipeline pulsation and system water hammer phenomenon caused by diaphragm pumps and other positive displacement pumps. It uses a corrosion-resistant diaphragm to isolate the gas from the liquid in the pipeline and solve the pipeline pulsation by changing the volume of the gas chamber.

The Working Principle of Diaphragm Pulsation Damper

Since the metering pump is a reciprocating pump, all the output fluids are pulsating flows. This pulsation will generate pressure in the pipeline system and sometimes have adverse effects on the process system. Therefore, a pulsation damper is needed to alleviate the pulsation of the liquid in the pipeline system.

A diaphragm damper usually has an elastic diaphragm inside, which divides the internal space of the damper into two chambers. When liquid or gas passes through the damper, the fluid will be buffered by the diaphragm, so that the flow speed is slowed down and the pressure fluctuations are absorbed. The elastic material of the diaphragm can deform according to the pressure changes of the fluid, thereby achieving a damping effect.

Diaphragm Damper Drawing

The Main Functions of the Diaphragm Damper

• Reduce or eliminate the harm of water hammer to the pipeline system.
• Reduce the peak value of the medium flow velocity fluctuation at the outlet of the diaphragm pump.
• Reduce the impact of the diaphragm outlet pressure fluctuation on the pipeline and valve.
• Establish an optimal working environment for the metering pump to enhance its operational performance and efficiency.
• When used alongside other accessories like back pressure valves, the pressure fluctuations within the system pipeline can be reduced to nearly zero.
• Reduce the influence of pipeline pressure fluctuation on other metering instruments such as flow meters.
• Smoothly and continuously transport the dosing material to the dosing point.

Advantages of Diaphragm Pulsation Dampers

1. High-pressure resistant, high-pressure diaphragm structure, separation of medium and compressed gas to ensure long-term stability
2. No moving parts, use the solid medium to directly intercept fluid to achieve the effect of buffering pressure pulsation or flow pulsation.
3. The damper has a reasonable structure design, effectively absorbs pulses and buffers pressure, and is of reliable quality.
4. Simple structure, compared with other complex damping devices, the diaphragm damper has a simple structure, and installation and maintenance are relatively convenient.
5. For high durability, the diaphragm material is usually selected from materials with high wear resistance and corrosion resistance, which are suitable for a variety of harsh environments.
6. The effect is obvious, the diaphragm can quickly respond to changes in fluid pressure and achieve the timely buffering effect.