Author Topic: New feed pump for the boat.  (Read 26232 times)

Offline steamer

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Re: New feed pump for the boat.
« Reply #45 on: September 30, 2013, 02:59:47 AM »
Thanks Steve!

I've got work to do on the boat!....lot's of changes.     The feed tank is coming out, and in it's place a pair of batteries.  Then some running lights, and I get to mount this little beauty where the bow tank deck fill fitting is.



"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Don1966

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Re: New feed pump for the boat.
« Reply #46 on: October 03, 2013, 02:06:45 AM »
Hi Dave I like your spot light. It's a must around here since we do have a lot of swamps. When you change the power cord see if you have glass sleeving on the wires that connect to the lamp. If it doesn't let me know and I will send you some. The glass sleeving helps keep the insulation on the wire. These lamps generator a lot of heat. Happy boating my friend.

Don

Offline Alan Haisley

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Re: New feed pump for the boat.
« Reply #47 on: October 03, 2013, 06:47:01 PM »
Dave,
I've got an iggorant question for you (and others): What the heck is "wet air", where does it come from, where do you want it to go, and what will it do when it gets there?
I'm one of those poor, unenlightened, souls who has never seen a real steam engine, never talked with a real engineer about one, and just learn what I can by reading.
Alan

Offline steamer

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Re: New feed pump for the boat.
« Reply #48 on: October 03, 2013, 08:58:46 PM »
Aren't these names just wonderful? :lolb:

Wet Air Pump

OK what is Wet Air.    Wet Air is the air and condensate coming out of the condenser.   Its wet because its mixed with the condensed steam...( water)....hence the name....

So

A Wet Air Pump takes the water and air from the condenser and assists in keeping a vacuum..  It delivers the mix  to a Hot well.  A hot well is a open tank which the wet air  the mix is deposited...and hopefully if done correctly, the water temperature is above 160F which will drive off the entrained oxygen   The boiler feed pump then takes that de arated water and pumps it back into the boiler
Dave
« Last Edit: October 05, 2013, 03:09:22 PM by steamer »
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: New feed pump for the boat.
« Reply #49 on: October 03, 2013, 08:59:50 PM »
Hi Dave I like your spot light. It's a must around here since we do have a lot of swamps. When you change the power cord see if you have glass sleeving on the wires that connect to the lamp. If it doesn't let me know and I will send you some. The glass sleeving helps keep the insulation on the wire. These lamps generator a lot of heat. Happy boating my friend.

Don

Hey Don,

I am seriously considering changing this one over to an LED high intensity....but will keep your offer in mind!

Thanks Bud!

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: New feed pump for the boat.
« Reply #50 on: October 05, 2013, 08:51:07 PM »
Got the orings and the bolts I needed.    Ill get some more done today.....but im at the track with the kids.
Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: New feed pump for the boat.
« Reply #51 on: October 07, 2013, 12:08:36 AM »
Ok got the valve keepers done, and mounted along with the shuttle valves..and hardware....there is a adapter plug I need to make that goes between the two.   but it seems to be coming together.





Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Online Kim

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Re: New feed pump for the boat.
« Reply #52 on: October 07, 2013, 04:00:19 AM »
Looks good Dave!
Those are some nice sized hunks of brass you've used here!
Kim

Offline steamer

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Re: New feed pump for the boat.
« Reply #53 on: October 07, 2013, 10:56:23 AM »
Aren't they!....I've only changed the form of the valves inside.   the rest is exactly as Ray drew it.   Next up is the plug adapter and the piston, and the water side parts will be done.


Dave   
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: New feed pump for the boat.
« Reply #54 on: October 08, 2013, 04:29:19 PM »
Oh and I didn't have a 1/2-20 die for the valve keepers...so I had to single point them to the shoulder where there is a .07 O-ring groove.   Now normally, that would require some "puckering" and back gear and to be quick on the reverse...but not so on Samantha with the VFD...I could crawl to the corner and back away quickly ...no worries......Love that VFD!

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: New feed pump for the boat.
« Reply #55 on: October 09, 2013, 03:28:56 AM »
Well I got the body of the plunger turned to size.   I had a piece of old prop shaft....Nasty stuff...It turned with some coaxing....

I still need to cut it to length and cut the O ring groove...but it pumps water!....so I'm doing something right.

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline steamer

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Re: New feed pump for the boat.
« Reply #56 on: October 21, 2013, 11:52:37 PM »
Not a lot happened this past weekend....spent some time setting up Solidworks on my home PC.  My son loves it, and is working on it. :ThumbsUp:.....better than most of the video games....

I got the pump plunger to progress a bit though.   It still needs the slot and hole cut for the wrist pin though.

I need to lay in the existing engine mounts so I can modify the base plate to fit my application, though first I want it to reliably pump to 400 psi.    Then I'll be confident this will be the pump for the boat.

Dave

"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline b.lindsey

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Re: New feed pump for the boat.
« Reply #57 on: October 22, 2013, 02:04:44 AM »
You are making some good progress Dave. It's looking really good too.
Bill

Offline tel

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Re: New feed pump for the boat.
« Reply #58 on: October 22, 2013, 09:05:37 AM »
Quote
I want it to reliably pump to 400 psi.    Then I'll be confident this will be the pump for the boat.

Don't think you will have any problem on that score Dave, these type of pumps can produce scarily high pressures.
The older I get, the better I was.
Lacerta es reptiles quisnam mos non exsisto accuso nusquam

Offline steamer

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Re: New feed pump for the boat.
« Reply #59 on: October 22, 2013, 10:02:52 AM »
Good!....I need about 200 consistently.   Max steam pressure is 160 psi...but with the feedwater heater, and the economizer....there is some pressure loss. 
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

 

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