Regarding water pressure calculation
Thread Content
The booster pump has a head of 30 meters; the water pressure at the pump’s inlet is 0.2 MPa. The water is pumped to a height of 20 meters. Assuming that the pressure at that height is also 0.2 MPa, will this pressure of 0.2 MPa be maintained at a height of 20 meters once the pump stops operating and the flow at the pump’s outlet is cut off? If it cannot be maintained, how can a pressure interlock be set to keep the pump from remaining in the normally open state?
Install an electric contact pressure gauge: the low-pressure pump starts when the pressure drops below a set value, and it stops when the pressure reaches the set value. It’s very simple; I’ve seen it used this way before
The problem is that some people say that failing to maintain a high pressure level will cause the pump to remain in operation continuously
Why can’t the pressure be maintained? If water is coming out, of course the pump has to keep running. If there is no water output pressure, then there is a leak; all that needs to be done is to fix the leak. Besides, if you need water at a higher level, then when the pressure at that height is insufficient, the pump must stay on. Why keep the pressure high when you’re not using water?
In my opinion, your chain mechanism isn’t very reasonable; in an emergency situation, it shouldn’t be a source of stress, and what’s the point of ensuring a pressure of 0.2 MPa at this position?
Is a check valve installed at the pump outlet?
Ensure a certain water pressure to meet the usage requirements
If I have a dozen or so water usage points and do not maintain a detection pressure, how can I ensure that the pump starts when water is needed?
Previously, such devices were used with a high-level tank and an SV program valve
The sump is a good method, but after considering it, we found it unsuitable or too costly