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ASHOK KUMAR JENA
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Join Date: Oct 2012
Posts: 4

Boiler Feed Pump

10/17/2012 7:40 AM

We have replaced the bearings bearing housing and lub oil as per OEM OF THE BFW pump.

But the still the thrust bearing tempreraure is high.

Can any one give any superior idea to get rid of that.
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Joshi
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Join Date: Oct 2007
Location: India
Posts: 1246
Good Answers: 34
#1

Re: BOILER FEED PUMP

10/17/2012 7:54 AM

What is the temperature of the boiler feed water?

What is the temperature of the thrust bearing?
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ASHOK KUMAR JENA
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Posts: 4
#4
In reply to #1

Re: BOILER FEED PUMP

10/24/2012 5:07 AM

It is 125 deg c. c and the temp of thrust bearing is going as high as 98deg c.
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Joshi
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Location: India
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#7
In reply to #4

Re: BOILER FEED PUMP

10/24/2012 5:31 AM

Water boils at 1000 C. Is it not apparent to you that boiler feed temperature is unduly high? Please read this:

The Feedtank and Feedwater Conditioning
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Drew K
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Engineering Fields - Mechanical Engineering -

Join Date: Sep 2009
Posts: 1651
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#2

Re: BOILER FEED PUMP

10/17/2012 8:01 AM

How are bearings cooled? Separate electric pump or shaft off the motor or pump?

Check for adequate flow to bearings.

Also have your vibrations guy check for problems (providing he is better at vib analysis than I am :)

Drew K

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ASHOK KUMAR JENA
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Join Date: Oct 2012
Posts: 4
#5
In reply to #2

Re: BOILER FEED PUMP

10/24/2012 5:12 AM

cooling is by a shaft mounted fan. it is new. oil circulation is by oil rings only. the same pump (stand by) thrust bearing temp is 56-60 deg c. but his pump mentains above 85deg c.

vibration of both the pumps are equal.
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#3

Re: Boiler Feed Pump

10/18/2012 3:30 AM

Well, it must be worth a couple of telephone calls to the OEMs of both the bearing and the pump.

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ASHOK KUMAR JENA
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Join Date: Oct 2012
Posts: 4
#6
In reply to #3

Re: Boiler Feed Pump

10/24/2012 5:15 AM

have done shaft , bearing seal replacement by OEM Only.
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ducon
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#8

Re: Boiler Feed Pump

10/28/2012 1:22 AM

What is the height of your Boiler Feed tank?

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ASHOK KUMAR JENA (3); Drew K (1); ducon (1); Joshi (2); PWSlack (1)

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