There is a check valve behind each pump. Can the two pumps operate simultaneously?
Thread Content
This post was last edited by Desert Fish on 2020-7-26 at 11:54. Improvement of piping technology: Check valves are installed after the pumps. Can the two pumps operate simultaneously? What precautions should be taken when they do?
In actual operation, it is recommended to use one pump for fixed-frequency operation and another for variable-frequency operation.
This question has no clear context or starting point, making it difficult to answer. As the saying goes, we should deal with things on their own terms; I hope more information can be provided before we continue the discussion
Depending on the situation, for the section from Tank A’s outlet to the tee inlet pipe, it is necessary to determine whether Pump B can operate at the required flow rate and whether the frequency converter has sufficient capacity. It is important that the diameter of the outlet pipeline is appropriate so that the pump can operate at full load. Since it is a variable-frequency pump, this method can be used for testing: 1. Start one pump and gradually increase its load to full capacity to see the results. 2. While keeping one pump at full load, start the other one and gradually increase its load. If there are fluctuations in the inlet pressure gauge, intermittent throttling sounds from the pump, or fluctuations in the outlet pressure gauge, it means that pump A is not capable of handling enough flow. If both pumps are set to 100% frequency and everything operates normally, then everything is fine. However, it is still better to have one pump running and another as a backup, especially in cases of continuous production
It’s hard to say, as the specific reason is unknown. If the supply pipeline can provide enough material, then the two units can be operated simultaneously
Both the primary and standby pumps in a chemical plant require pump switching operations, and during such switching, both pumps have to operate simultaneously for a while. It generally doesn’t take long; running two pumps simultaneously has disadvantages, such as one pump running dry due to insufficient flow in its suction pipe. It is also difficult to control the outlet flow rate and pressure when two pumps are operated together; if there is a large difference in the head capacity of the two pumps, it is possible to damage the pump with the lower head capacity
Why is it set up this way? ? One constant control, one variable control? ? ?
Flow regulation; variable frequency drives are relatively energy-efficient.