×
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

HPU Accumulator charge time

HPU Accumulator charge time

HPU Accumulator charge time

(OP)
I know very little about hydraulic systems but am looking at one for closure of ESD valves.

We have pumps (not normally running) and accumulators which will provide system volume to move valves.

I'm wondering about the criticality of the charge time of these accumulators. The duty pump kicks in when system pressure drops by a certain amount to re charge the system and accumulators. I'm wondering what the time to charge the system back to the required pressure should be, if this is important and why?

Thanks

RE: HPU Accumulator charge time

Generally not very much time.  It depends on the size of the accumulators or the charge volume is and the delivery volume of the pump.  If the charge volume is 5 gals. and the pump can deliver 5 gpm at pressure then charge time is one minute.  Assuming no other function is consuming the pump flow when the accumulators are being charged.

Ted

RE: HPU Accumulator charge time

Typically, these pumps would run when the system pressure dropped to the minimum pressure that would still allow the valve to actuate and turn off when the maximum operating pressure is reached.  If this is the case, then the charge time is not critical as the valve should always be available.  The pump be capable of moving more fluid than the amount discharging/leaking causing the drop in system pressure.

I2I

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!


Resources