×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Struggling to stop pump leakage. Please advise if you have hydraulic/pneumatic experience / expertis

Struggling to stop pump leakage. Please advise if you have hydraulic/pneumatic experience / expertis

Struggling to stop pump leakage. Please advise if you have hydraulic/pneumatic experience / expertis

(OP)
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?

RE: Struggling to stop pump leakage. Please advise if you have hydraulic/pneumatic experience / expertis

Any chance you can scratch this out on a napkin including every detail you can think of? Take a picture of it and post it in here? Better info, better answers. Use the little Camera Image Icon for a direct insert into the post.

Keith Cress
kcress - http://www.flaminsystems.com

RE: Struggling to stop pump leakage. Please advise if you have hydraulic/pneumatic experience / expertis

Can you put a higher pressure capacity seal in the pump?

Ted

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

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.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - The Criticality of the E/E Architecture
Modern vehicles are highly sophisticated systems incorporating electrical, electronic, software and mechanical components. Mechanical systems are giving way to advanced software and electronic devices, driving automakers to innovate and differentiate their vehicles via the electric and electronic (E/E) architecture. As the pace of change accelerates, automotive companies need to evolve their development processes to deliver and maximize the value of these architectures. Download Now
White Paper - Model Based Engineering for Wire Harness Manufacturing
Modern cars, trucks, and other vehicles feature an ever-increasing number of sophisticated electrical and electronic features, placing a larger burden on the wiring harness that enables these new features. As complexity rises, current harness manufacturing methods are struggling to keep pace due to manual data exchanges and the inability to capture tribal knowledge. A model-based wire harness manufacturing engineering flow automates data exchange and captures tribal knowledge through design rules to help harness manufacturers improve harness quality and boost efficiency. Download Now
White Paper - Modeling and Optimizing Wire Harness Costs for Variation Complexity
This paper will focus on the quantification of the complexity related costs in harness variations in order to model them, allowing automated algorithms to optimize for these costs. A number of real world examples will be provided as well. Since no two businesses are alike, it is the aim of this paper to provide the foundational knowledge and methodology so the reader can assess their own business to model how variation complexity costs affect their business. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close