Have you ever seen a centrifugal pump that starts automatically?
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:Lol, what are the conditions required for an centrifugal pump to start automatically? Is it sufficient if the outlet valve adjusts itself?
The electrical and instrumentation systems should be equipped with auto-start conditions; there should be check valves at the outlet, and the manual valves at the inlet and outlet should be in the open position. Of course, level or flow control valves are essential and must be set to automatic mode.
Pressure gauges and level gauges can both be used to control the automatic start-up of the pump! Install a check valve at the outlet of the import and export valves! It is best to use variable-frequency starting for the motor, as this ensures a smooth start-up of the motor pump!
:Lol, could you give a detailed example? Is the investment cost very high in that case?
Aren’t pressure gauges and level gauges designed for local display? Or can they be connected to the control panel, which would then automatically adjust the outlet valve?
Isn’t the condensate pump in the compressor interstage tank a self-starting pump, controlled by a level interlock?
The motor power needs to cover the entire curve.
What kind of process, what type of pump? What does self-start mean? Does the valve open automatically, and does the motor start automatically as well?
There are too many self-priming centrifugal pumps, with the inlet and outlet valves remaining open. There are interlocks for low pressure, low oil pressure, and low flow rate.
It has never been used in the manufacturing process; at most, a frequency converter is used to adjust the pump speed, and that is also on a manual basis. Fire pumps use automatic pressure regulation systems, and such a device has not been seen in any manufacturing processes
It is controlled by DCS; the level gauge has remote transmission capability, rather than being a local display type. If DCS is available, the investment required is 100,000