What is the purpose of a circulation line installed between the regenerator top reflux tank and the regenerator top reflux pump? Thank you!
Thread Content
What is the purpose of a circulation line installed between the regenerator top reflux tank and the regenerator top reflux pump? Thank you!
It might be the first time that the machine pumps are being tested during operation.
Reply 1# Where on the circulation loop does the Four Seasons Route connect to the return tank? The middle or the top?
Reply to 1# Walking Through the Four Seasons: It should be the pump’s return line, and its functions include the following: 1. This line can be used for testing the pump. 2. When the pump is operating normally, keeping this line slightly open helps prevent pressure buildup in the pump during automatic adjustments due to fluctuations in liquid level (some pumps have a minimum return flow protection feature). 3. When starting the pump, flow is first directed through the return line; after the pump begins to operate, the outlet valve is gradually opened while the return flow is reduced to adjust the pressure at the pump’s outlet
This is the pump’s minimum return line. On top of the tank. Something that is very common in other work sections. Active participation
Reply to 3# Shandong Huaxing: It’s on the top of the tank.
Reply to 5# zhezi2009.wang: What does the minimum return line mean, and what would happen if it were not present?
Reply to 3# Shandong Huaxing: What is the purpose of installing a circulation line between the regenerator top reflux tank and the regenerator top reflux pump? Thank you! The reply score exceeded 20 at 20:45 yesterday. What does that mean? Thank you!
Its main function is to prevent pressure buildup in the pump; it has no other functions
Reply to 7# zhanghui5557: When the pump’s operating flow rate is below 20% of its rated flow rate, a radial thrust in the vertical axis direction is generated. Moreover, since the pump operates at low efficiency, the liquid temperature at the inlet increases, leading to a rise in vapor pressure and an increased risk of cavitation. At this point, a minimum flow line must be established! Active participation
It is useless for the line to operate normally; it is generally used in the following situations: 1. During the startup phase, for water coupling and testing of pumps; 2. When starting up or shutting down, to ensure that the pumps operate within their appropriate operating range