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Regarding the issue of connecting a centrifugal pump (at the front) in series with a plunger pump (at the back)

2018-06-05View Original

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What issues should be considered when connecting a centrifugal pump (front) and a plunger pump (back) in series? Everyone is welcome to discuss it.
Reply #22018-06-05
Regarding the flow rate selection, the front pump should be appropriately larger to prevent it from running dry
Reply #32018-06-05
I want to ask what the original poster’s purpose for doing this was Plunger pumps are reciprocating; a centrifugal pump is used in conjunction with them – I heard about this for the first time
Reply #42018-06-05
We have also used both centrifugal and reciprocating types before; this one works properly. Previously, we connected a centrifugal pump when using a high-pressure pump that was used for multiple purposes. Normally, the high-pressure pump is used intermittently, and since the other medium is located at a distance, it is brought in through the centrifugal pump
Reply #52018-06-05
I only have some basic knowledge of petrochemicals; I really had never seen this type of configuration before. I’ve learned something new today! :handshake
Reply #62018-06-05
On our end, since the plunger pump cannot withstand high temperatures, a high-temperature centrifugal pump and a heat exchanger have been added in front of it. There is about a 20% margin in flow rate, and the pressure before the plunger pump is designed to be 1 bar for calculations. Are there any other questions?
Reply #72018-06-05
On our end, since the plunger pump cannot withstand high temperatures, a high-temperature centrifugal pump and a heat exchanger have been added in front of it. There is about a 20% margin in flow rate, and the pressure before the plunger pump is designed to be 1 bar during calculations.
Reply #82018-06-05
On our end, since the plunger pump cannot withstand high temperatures, a high-temperature centrifugal pump and a heat exchanger have been added in front of it. There is about a 20% margin in terms of flow rate, and the pressure before the plunger pump is designed to be 1 bar in the calculations. There are still some issues.
Reply #92018-06-05
Of course, there are issues; it is recommended to add a tank after the centrifugal pump/heat exchanger, and then connect a plunger pump. If you don’t want pressure loss at the outlet of the centrifugal pump, you can replace the tank with a sump or a pulse damper.
Reply #102018-06-05
The outlet pressure of the centrifugal pump can be controlled via a bypass.
Reply #112018-06-05
A centrifugal pump (at the front) and a plunger pump (at the back) are connected in series; such a configuration has not been seen before, and it is very difficult to achieve a perfect match.

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