Issues regarding the flow pattern on the minimum return line of ultra-high pressure boiler feed water pumps
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Issues regarding the flow pattern on the minimum return line of ultra-high pressure boiler feed water pumps
As shown in the PID diagram, it represents the flow path on the minimum return line of the ultra-high pressure boiler feed water pump. The ultra-high pressure boiler feed water exits the pump, passes through FVC90325, from where a branch for the minimum flow rate is formed; this branch then passes through a self-acting valve and subsequently through the valve labeled LO. What is SSP94040 in this context? What functions does it have? I hope the experts can explain it. Thank you
Furthermore, since this line eventually returns to the deaerator, where is the high pressure reduced?
Where do the control signals for FVC90325 come from?