Flow control of reciprocating pumps
Thread Content
It is well known that there are three methods for flow control in reciprocating pumps: adjusting the stroke of the reciprocating pump, bypass regulation, and frequency conversion regulation. When any two or all three of these three control methods are capable of regulating the flow rate of the reciprocating pump during normal operation, which one should we choose? Which one is more convenient to use and results in the least wear and tear on the equipment?
Variable frequency control can also help save electricity.
Although variable-frequency control can save electricity, it requires higher capital investment. If the requirements are not particularly strict, it is possible to adjust the stroke of the reciprocating pump ； If stricter requirements are needed, bypass adjustment can be used.
Variable frequency regulation or bypass return should be selected.
This post was last edited by hand over VS flow on 2010-4-30 at 14:11. Generally, reciprocating pumps come with stroke adjustment mechanisms – so why isn’t it used? Variable frequency control is the most energy-efficient method, but it is particularly effective for centrifugal pumps; the energy-saving effect of reciprocating pumps is somewhat less significant.
This post was last edited by wang*nhua77020 on 2010-4-30 at 12:46. Regulation is achieved through frequency converters to save energy and reduce consumption; if the flow rate is low but high precision is required, frequency conversion along with stroke adjustment can be employed
Personally, I think that considering equipment wear and tear, bypass regulation should be the choice. Since both frequency conversion and stroke adjustment involve operating the equipment, the higher the frequency of such operations, the greater the risk of damaging the equipment. In contrast, bypass adjustment refers to regulating the outlet flow, and it does not cause any significant damage to the equipment; on the contrary, it helps to protect it.
Stroke adjustment and circuit adjustment completely solve the problem