Are there pumps that operate intermittently?
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I wonder if anyone has come across pumps that operate intermittently? For example, when the flow rate or liquid level falls below a certain value, this pump starts to operate ； When the flow rate and liquid level reach normal values, this pump stops working and ceases to feed? If so, could you attach a diagram? :handshake
This should have nothing to do with the pump; it’s mainly a matter of setting the control system.
The pump can be equipped with a level control system, and the operation of the motor can be interlocked with the level gauge. Variable frequency control can also be used, that is, the pump runs continuously, and the motor speed is controlled to regulate the liquid level. If the motor is not large, it offers energy savings through variable frequency control, is easy to operate, and requires minimal investment. I don’t know where you are from; if you need anything, you can get in touch with me, but I’m not in the business of selling things.
This has nothing to do with the pump; the key is the control system
The submersible pump used for the underground vent tank in coking is interlocked with the liquid level in that tank: the pump stops operating when the level falls below a certain threshold, and it starts running when the level rises above that threshold. This can be achieved by providing data to the electrical control devices and instruments.
Such a pump is an intelligent pump! It is generally used in aerospace, as well as in various high-tech applications! The cost of this pump is too high! It is generally not used in refineries.
This is a regular pump that is widely used in the fine chemical industry; perhaps you are in the petrochemical industry, where pumps generally operate continuously. As long as the relevant control parameters, such as liquid level/flow rate/pressure, are provided to the pump, it can be made to operate intermittently based on the corresponding commands; it’s simply a control issue and has nothing to do with smart pumps at all
Whether it is intermittent or continuous depends on the process requirements; a corresponding control system can be designed for the actual operation. The pump itself is the same as one that operates continuously; just design an appropriate control system, and that’s it!
Implement a level control in the control system; the operation of the motor can be interlocked with the level gauge.
It’s quite normal; for example, in the case of submersible pumps, it’s sufficient to add a liquid level control system.
The pump itself does not operate in an intermittent manner, but to achieve energy savings, a variable frequency drive or similar device can be used to adjust the speed, thereby controlling the flow rate and reducing power consumption
Such systems are ubiquitous; for example, high-rise building water supply systems, etc
In some highly automated factories, some backup pumps need to start automatically; these are actually pumps that operate intermittently, and this can be achieved by simply changing the control scheme~~~