Relationship between pressure and flow rate
Thread Content
In a short pipe, can the flow rate be varied while keeping the fluid pressure constant by adjusting the valve?
The process pressure also fluctuates as the flow rate is adjusted
In fact, the control principles of hydraulic systems or components are inseparable from pressure and flow rate; the basic Bernoulli equation includes pressure and velocity, and velocity is equal to flow rate divided by the cross-sectional area through which the fluid flows； The working principles of pilot-operated relief valves, speed control valves, many variable pumps, and so on also illustrate the relationship between pressure and flow. When dealing with hydraulic issues, pressure and flow cannot be considered separately; they must be taken into account together.
It can maintain pressure and increase flow rate. Below, I will only explain how to implement it, but it may not necessarily use your specific operating conditions. Pressure regulators and flow valves can be installed in the pipeline according to the flow direction. The flow valve is first set to a half-open position to determine the pipeline pressure; increasing the opening degree of the flow valve raises the flow rate, which in turn lowers the pressure. Then, the pressure regulator located earlier is adjusted to restore the pipeline pressure to its previous level, and naturally, the flow rate in the pipeline increases as well.
Reply to 4# bashengfu: So it’s still one pressure corresponding to one flow rate, right?