Yes, we thought about installing another pressure relief valve. the fluid is phenolic resin so ש blockage in the pressure relief valve is possible in a certain situations.
The gear pump discharge maximum pressure is around 30 bar.
The control will stop the pump after 2-3 seconds of very high...
Hello,
We plan to have a positive displacement pump that can get up to a discharge pressure of 30 bar.
we will have a pressure relief valve after the pump that will work at around 10 bar, and a pressure transmitter after the pump so we can stop the pump if we reach 8 bar.
I know that a pressure...
We use a servo motor to control the flow of the pump by increasing or decreasing the RPM of the pump (not Hz like VFD).
we checked the shafts and coupling and there was no issue with that.
It's a standard gear pump that one gear moves the other.
The decrease in pump performance is like the RPM...
Thank you, guys.
I will try to answer some of the questions:
1. please see a part of the P&ID of the system:
2. we run the pump without a PRV and the result is the same.
we also run the pump in our workshop after the fault (the customer send the pump to us) and we connected it straight to a...
Hello All,
We are dealing with a phenomenon of a very rapid drop in pump performance shortly after the system is activated.
To go deep into the details:
We have a tank with an agitator inside, there is a liquid inside(a mixture of water and oil) with level control. there is an outlet pipe going...
Hey all,
I will appreciate your opinion on adding booster pump as I mentioned above:
Beside some mechanical changes, do you think adding a booster pump at the outlet of the tank on the 1.5" pipe will help?
If yes, I will be happy to know what do you think are the parameters required to take to...
Beside some mechanical changes, do you think adding a booster pump at the outlet of the tank on the 1.5" pipe will help?
If yes, I will be happy to know what do you think are the parameters required to take to select the appropriate pump.
I was thinking of taking a centrifugal pump with a flow...
Hey all,
Here is a picture of the design of the system:
The connection to the lines going up to the pump is welded, the tees you can see behind is just for flushing.
I guess and as you say, we have an issue that can cause a cavitation, maybe because of to much losses in the pipes.
But my...
Hey,
So I meant we have full control on flow of each pump by a mass flow, and the pump is with servo motor.
We did some tests, for example 10 LPM (this is a normal flow in these machine) with one pump we got a stable flow.
When we tried to work with 5 LPM per pump x 2 pumps in parallels, we got...
Hey all,
Sorry for the delay, I will try to answer the question above:
If these are gears pumps what do you mean when you say "The flow is the same in one/two or three pumps." Flow in total or flow through each pump?
I meant if we work with 2/3 pumps the total flow for them is the same as a...
Hey all,
We are running a system with 3 positive gear pumps in parallel that installed at the outlet of a tank, like the picture below:
The left pump is the closest pump to the tank.
The outlet of the tank is 1.5", going up to suction of the pump is 3/4" for each pump and the discharge pipe is...
Hey All,
We want to design a water heater that works with a constant water flow in a pipe.
The pipe run in circles inside a water tank, the water in the tank is the heating medium.
We want to get an estimate of the required length pipe.
For this I take few assumptions:
surface temperature is...
Hello All,
I got into a discussion with some other mechanical ENGs about pressure drop in pipe.
We are running some tests for a gear pump and want to simulate a flow rate with back pressure in the end of a long line that as a connection to a 10 bar steam line. I suggest to use a short line and a...
