How to adjust the balance between two pools and four pumps?
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There are two tanks, A and B. Four pumps are used to pump water from tank A to tank B; tank B supplies water for production purposes, while tank A is fed with water that has been reused in production. I would like to know how to set up rules for starting and stopping these pumps so that the levels in both tanks remain within certain limits. The existing rules use the water level in Tank A to control the start and stop of the pumps: for example, when the level is at 1, Pump 1 starts; when the level reaches 2, the pumps stop, and so on. In Tank B, the water level determines the number of pumps that can operate – four pumps can run when the level is below 1, two pumps when the level is between 1 and 2, one pump when the level is between 2 and 3, and no pumps at all when the level exceeds 3. At the critical levels in Tank B, this results in frequent start and stop of the pumps. Is there any good way to solve this problem?
If we talk about “how to set start and stop rules to ensure that the two pools vary within a certain range.” ”For automatic control, it is necessary to set up automatic level control; you can check online to find distributors. If a relatively stable liquid level is required, a pneumatic or electric self-regulating valve must be installed to make adjustments based on the differential pressure transmitter of the level gauge. For reference.
Water level control is only implemented in tank B, to control the start and stop of the pump that transfers water from A to B, thereby maintaining the water level in tank B.
Could the critical point cause the four pumps to start and stop frequently?
When the liquid level is below 1, all 4 pumps can be started; when the level is between 1 and 2, 2 pumps are started; when it is between 2 and 3, 1 pump is started; when the level is above 3, all pumps stop operating
It is recommended to contact control system manufacturers such as Hilscher or Zhejiang University Control System
I agree with the view from the third floor: a low liquid level protection mechanism should be installed in tank A to activate the pump, thereby preventing the pump from running idle. The issue of frequent start-stop operations can be addressed by adding a delay in the program. It is recommended that you sketch your current control method and upload it for a look.