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Flow Control

Page history last edited by jim mason 14 years ago

Flow Control - Design Round 1

This was the original servo-controlled ball valve used under PID control to maintain reactor vacuum for the multi-fuel tests. This quick implementation is not easily reproducable for others and is generally not the most elegant design (it worked well however).

For researchers with a GCU who want to precisely control gasifier flow via the ejector with controlled compressed air, we will likely recommend a proportional solenoid valve which will likely run $200-300. Solenoid valves that do not offer variable (proportional) flow control are available for ~$30.

Flow Control - Design Round 2

This plate mounted ball valve and servo combo shows the start of development of a low cost solution for air mixture and other needs. This design is not yet viable, but shows the direction we are moving.

Some valves have both outlets cast in place, allowing a nice potential for saddle mounting. Most ball valves use one side to tighten the packing against the valve, disallowing seating this way. Fitting the saddle around the pipes therefore necessary.