The function of a pressure regulator
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In our company, pressure stabilizing valves are installed after the flow meters on the outlet pipelines of the reciprocating pumps. What is the function of these pressure stabilizing valves? Besides stabilizing the pressure at the pump outlet upstream of them, do they also play some role in stabilizing the flow rate?
The pressure stabilizing valve on the pump outlet pipeline can, through its own regulation, reduce pressure fluctuations in the pipeline and mitigate pressure shocks. A pressure stabilizing valve can stabilize the pressure at the pump outlet located upstream of it; it can help reduce flow fluctuations, but it cannot achieve stability. In a pipe section, the flow rate of the fluid is greatly influenced by the pressure difference between the two ends of that pipe. As a result, pressure fluctuations are inevitable during the valve’s self-regulation process, and therefore it cannot stabilize the flow.
It’s better to add a pressure stabilizing tank; the results will be better, hehe
Installing buffer tanks at the outlets of reciprocating pumps and diaphragm pumps has a positive effect on extending the pump’s lifespan and reducing vibrations in the pipelines
In fact, the pressure stabilizing valve is placed after the flow meter in order to reduce fluctuations in flow rate and make the readings of the flow meter more stable; thus, its main function is to stabilize the flow rate. Otherwise, the flow rate readings fluctuate violently and cannot be measured ； Theoretically, pressure fluctuations are closely related to flow rate fluctuations. When the power of a reciprocating pump remains constant, the greater the pressure fluctuations, the greater the flow rate fluctuations as well; therefore, stabilizing the pressure means stabilizing the flow rate. A pressure reducing valve primarily stabilizes the pressure downstream, while a pressure regulating valve mainly stabilizes the flow rate, that is, to precisely control the flow.
A pressure regulator can only stabilize pressure; it cannot stabilize flow rate. But it can keep the fluctuation range of traffic very small! ! ! This can reduce the impact force of the fluid on the pipeline at the pump outlet! ! !
Is there an exact answer? The two people above mentioned two different opinions.