ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Increasing demand factors in residential
by gfretwell - 03/28/24 12:43 AM
Portable generator question
by Steve Miller - 03/19/24 08:50 PM
Do we need grounding?
by NORCAL - 03/19/24 05:11 PM
240V only in a home and NEC?
by dsk - 03/19/24 06:33 AM
Cordless Tools: The Obvious Question
by renosteinke - 03/14/24 08:05 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
0 members (), 255 guests, and 16 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 2 1 2
#121122 06/19/05 07:00 AM
Joined: Jan 2003
Posts: 4,391
I
Moderator
Thanks electure. [Linked Image]

Where I worked we had many air receivers some as large as 500 gallons and running 125 to 175 PSI. The care of these was a great concern.

We had a picture of a 3 or 4 bay garage that was made of concrete block that was literally two thirds leveled by a receiver explosion.

Compressed gases are very dangerous, we also had hydraulic accumulators that operated on compressed nitrogen. Think of these as storage batteries for hydraulic pressure.

The hydraulic pump could be off and there would still be full line pressure (2000 to 3000 psi) in the hydraulic system. This could easily kill the untrained.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#121123 06/20/05 08:42 PM
Joined: Jul 2002
Posts: 8,443
Likes: 3
Trumpy Offline OP
Member
Quote
The hydraulic pump could be off and there would still be full line pressure (2000 to 3000 psi) in the hydraulic system. This could easily kill the untrained.
Whoa Bob !!,
I wouldn't disagree with a statement like that at all. [Linked Image] [Linked Image] [Linked Image]

#121124 06/21/05 01:34 AM
Joined: Mar 2005
Posts: 1,803
Member
Bob,
Were the nitrogen accumulators for high-pressure diecasting of aluminium by any chance? I worked for a company that made these machines, (Alfred Herbert, long since kaput) and the Foreman, Fred Bignold, had a party-piece where he put a nylon shirt ( remember those things!) into the injection sleeve and fired it into a test mould at 4000psi. The result was unbelievable- it came out as a disc 2" in diameter and 1/2" thick, and you could see the buttons inside it. A quick manipulation, and voila! the shirt was resurected- it was a bit creased though! [Linked Image]

PS. as is the vagaries of this modern mad world, it seems it's cheaper to buy a whole blinking compressor than just a receiver! Still looking!
Alan


Wood work but can't!
#121125 06/23/05 09:55 PM
Joined: Jul 2002
Posts: 8,443
Likes: 3
Trumpy Offline OP
Member
From Alan:
Quote
Took the pot off the compressor during dismantling, and dropped it on the floor. Oh! #***~?#*!! Never mind, my oldest son is making an exact copy in Gloucester, ( because his ma told him to! ), so there will be a slight delay while his CNC machines whittle another one from a solid chunk of Meehanite.

[Linked Image]


[This message has been edited by Trumpy (edited 06-23-2005).]

#121126 07/15/05 02:56 AM
Joined: Jul 2002
Posts: 8,443
Likes: 3
Trumpy Offline OP
Member
The Latest from Alan!:
Quote
Hot off the machines, the new cylinder barrel to replace the one I broke. I kept to the spirit of the renovation and spent an additional US$75 having the fins machined axially, rather than turned like a motorcycle pot. It's being shipped to me shortly via a visitor. I'm going to drill and tap the mating holes using the existing parts as jigs, and do a bit of filing and sinking to blend in the sharp corners. We used a medium carbon steel in the end, as cast iron proved too expensive. I'll use a moly oil-additive to prevent ring pick up till it's run in, unless any gasoline-head members think different!.

[Linked Image]

Thanks Alan. [Linked Image]

#121127 07/15/05 04:05 PM
Joined: Dec 2004
Posts: 161
G
Member
If it's well polished/burnished it shouldn't really need running in.

Page 2 of 2 1 2

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5