What is the function of the pump bypass line or circuit?
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What is the purpose of installing a bypass line on a pump? Why does the liquefied gas tank extraction pump A/B have a bypass line only on pump B, but not on pump A? (The premise is that the liquefied gas comes from the top of the stabilizer: liquefied gas is produced continuously). Is the goal to avoid using pumps and instead send the gas directly to the loading point via a bypass line? What are the main functions of having a bypass line for the heavy oil pump? Heavy reward.
Pumps used to establish a secondary line are generally positive-displacement pumps, and their main function is to regulate flow rate
Centrifugal pumps also have bypass lines; some are used to regulate pressure and flow, some serve to prevent freezing and condensation, and others have the function of shutting down the pump
Isn’t it more economical to use throttling to regulate pressure and flow in centrifugal pumps? I’m not quite sure about the functions of anti-freezing/anti-condensation and cut-off pumps; could you explain them?
Bypass: It can be used as a purge line when the unit is shut down. At the same time, if there is a problem with the pump, it can also be removed. For anti-freezing and anti-condensation purposes, pre-heating lines are generally used; this is a different concept from bypass systems. In a reciprocating pump, the component used to adjust flow rate should be called the return line. The A/B pumps of the original poster should share the same bypass line; in other words, the pump for B should be part of the A/B pump system.
Agree with the person above. The auxiliary line is called a connection line; it serves to isolate the pump and purge lines when shutdown occurs. What is exported are pre-heaters and heat pumps.