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Anonymous Poster #1

Generator Position

07/05/2013 7:53 AM

1) Why in a STG set, generator always is placed on the LP side & not on the HP side of the Turbine.?? What might be the probable reason for that.??

2) How axial thrust is balanced in HP turbine? Why double flow steam turbines are preferred?

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Guru
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#1

Re: Generator Position

07/05/2013 2:50 PM

Is this a homework question? It has that feel to it.

We don't do homework for people. However, if you want advice on whether your reasoning is valid/reasonable, we'd be happy to comment on your proposed answer...

One more thing: why not post with your username showing, so we know to whom we're talking? We don't bite (unless asked )

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Anonymous Poster #1
#5
In reply to #1

Re: Generator Position

07/08/2013 2:18 AM

Oh yes English Thorny Rose.. It is....
I had doubt which I wanted to get cleared, that's it.. I amen't asking anyone to do any homework for me... BTW, could you please define what homework actually means..??If you don't wanna answer, no need to interfere even... I expect answers for questions, that's it.. Hope its clear to you..
..|..

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#6
In reply to #5

Re: Generator Position

07/08/2013 9:04 AM

We don't do homework and we don't help RUDE anonymous posters!!!

I have a doubt, too. I doubt that you will go very far in life by asking others to do your work.

It's Google for you. I'd start by searching for manners, since you have none!

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Guru
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#7
In reply to #5

Re: Generator Position

07/11/2013 11:56 AM

Accepted public definition of Homework.

I find it interesting that you bothered having a rant at me, but were not inclined to say "Thank you" to IRSHAD for his informative answer.

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Guru

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#2

Re: Generator Position

07/05/2013 3:08 PM
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Guru

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#3

Re: Generator Position

07/05/2013 8:32 PM

Your instructor is giving you a trick question; pressure has nothing to do with the answer.

What other feature of a Turbine do you suppose could require that the generator be placed at the "LP" end ?

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#4

Re: Generator Position

07/06/2013 8:42 AM

Due to high generator rotor mass, generator is always placed on LP turbine side since it will cause high torsional stress in HP rotor. LP rotor shaft is bigger in mass , size and rigidity and will endure the induced torsional stress.

In HP turbine, balancing holes are provided in the disc which to some extent reduce pressure difference on both sides of a stage to balance the turbine. Double flow steam turbines are provided to balance axial thrust.

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Anonymous Poster (1); English Rose (2); IRSHAD (1); lyn (2); WJMFIRE (1)

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