We have a reciprocating pump that feeds off 2 gear pumps with highly viscous sealer. There is one line coming off of the main reciprocating pump, tees off at the front gear pump and goes another 20ft to the rear gear pump. The reciprocating pump works at the same frequency throughout the cycle of 30 seconds from start to finish. The problem is, the rear gear pump finishes its job 5 seconds earlier than the front gear pump. Looks like, as soon as the rear gear pump closes, all the flow is directed to the front gear pump which increases the internal pressure and causes the sealer to leak out of the shaft seals. We have had sealer leakage out of front gear pump since we installed it. We can't reduce the rate/pressure of the reciprocating pump as it would starve the system. If I put pressure regulators just before each gear pump, would that prevent pressure surge at the front pump after rear is done ahead of time? Or do I need to put flow control valves to limit amount of sealer going into both gear pumps? If I put flow control valves, and reciprocating sealer pump is working at the same rate, how do I protect the system from destroying itself? I can't put pressure release valve on a line full of sealer… How do you think this leakage can be prevented?
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Leading manufacturers are aligning their people, processes, and tools from initial product ideation through to field service. They do so by providing access to product and enterprise data in the context of each personâ€™s domain expertise. However, it can be complicated and costly to unite engineering with the factory and supply chain. Download Now
This whitepaper describes the role of thermal transient measurement to characterize semiconductor thermal behavior. It focuses on the value measurement derived structure functions provide through interpretation of the heat flow path inside a package for use in thermal characterization, failure diagnosis, and improving simulation thermal model accuracy. Download Now
By leveraging comprehensive digital twins of both product and production, manufacturers can design and validate assembly processes and entire facilities virtually, improving quality and accelerating the ramp-up to volume production. Download Now
Itâ€™s easy to fall in love with your own CAD design on the computer screen, but itâ€™s how everything fits together off the screen that really matters. Beyond the design, products need to solve real-life problems or provide huge benefits that genuinely merit separating money from wallets. Download Now