×
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

Impossible pump requirements?

Impossible pump requirements?

Impossible pump requirements?

(OP)
Is there a way to get 1500psi of hyraulic fluid at a flowrate of 2400 gpm into a cylinder without having 2000 hp pump. Someone suggested having an air over fluid reserve and pumping the air to force out the fluid. Also if anyone knows of pump manufacturer who can pump 2400 gpm of hydraulic fluid at 1500psi let me know. Thanks.

RE: Impossible pump requirements?

This flow and pressure work out to 2100 hp.
End of discussion.

RE: Impossible pump requirements?

Sure,
Use a 2000 HP motor and not a 2000 hp pump.

HP=gpm x delta psi x .00058 = 2088 hp.

Note: this is not taking into consideration the motor/pump efficiency, it is the hydraulic hp.

RE: Impossible pump requirements?

......and as for air over fluid, it all depends on how many gallons you want to push into your cylinder in one go, and how quickly you want to do that again (duty cycle), but I'm guessing that you might be (more than) slightly shocked by the size of compression package required and also your reservoir.

RE: Impossible pump requirements?

IMO, amongst others, make three screw pumps which will meet your duty.For intermittent duty, air over oil is normally the way to go.
Many hydro turbines use air over oil to drive the servomotors (big rams) that close the wicket gates. This decouples the instantaneous servomotor power requirement from the pump rating. The main reason in this application is to ensure the wicket gates can still be closed if the pump or its power supply fail. However the principle is still the same.
If your duty is continuous then obviously the pump hydraulic power must exceed the cylinder demand.

Cheers

Steve

RE: Impossible pump requirements?

I posted a question in engine and fuel engineering:
Thread71-84432 there off the self hydraulic pumps capable of producing a load of 1000-2000hp and spin at 8000-10000 rpm or would they have to be geared slower?
Thanks,

Tim

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

eBook - Integrating the Engineering Ecosystem
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
Research Report - Simulation-Driven Design for SOLIDWORKS Users
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. Download Now
White Paper - Industry 4.0 and the Future of Engineering Education
With industries becoming more automated, more tech-driven and more complex, engineers need to keep their skills and knowledge up to date in order to stay on top of this wave—and to be prepared for the Industry 4.0 future. The University of Cincinnati offers two online Master of Engineering degree programs designed specifically for practicing engineers. Download Now
eBook - The Design Gridlock Manifesto
In this eBook, you’ll learn 6 ways old CAD technology slows your company down and hear how design teams have put those problems to rest. “The Design Gridlock Manifesto” shares first-hand modern CAD experiences from 15 companies around the world. 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