CR4 - The Engineer's Place for News and Discussion®

Previous in Forum: AC Line Voltage Turned On By Low Battery Monitoring   Next in Forum: Purpose of Tertiary Coil/Capacitor in Battery Charger
Close

Comments Format:






Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







6 comments
Anonymous Poster

Barring Gear Motor and Turning Gear Motor

02/14/2011 1:14 PM

hi.........Is there any difference between the functioning/purpose of barring gear * turning gear motor......thank you.

Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru

Join Date: Dec 2010
Posts: 795
Good Answers: 56
#1

Re: Barring Gear Motor and Turning Gear Motor

02/14/2011 2:52 PM

See the following, from Wikipedia search :-

http://en.wikipedia.org/wiki/Thermal_power_station#Barring_gear

However, although barring and turning might be often used interchangeably, there may be a difference. Turning gear might be provided only for turning a "stopped" set for mechanical inspection [or to shift it, if a piston has stopped so close to top or bottom "dead centre" there is no turning torque for (steam/air) starting] and be engaged only to a stationary unit, probably manually. Barring gear has to be engaged and dis-engaged to/from a turning unit and needs a more complicated mechanism and electric control - usually automatic. Regarding the motors, there could be a difference in size due to the speed required or the starting torque required. It is likely, if a unit needs barring, that this would also be suitable for turning (two speed?) - rather than have another gear/motor unit.

Reply
Guru
Engineering Fields - Electrical Engineering - New Member United Kingdom - Member - New Member Engineering Fields - Electromechanical Engineering - New Member

Join Date: Aug 2010
Location: Under the Major Oak
Posts: 3629
Good Answers: 143
#2

Re: Barring Gear Motor and Turning Gear Motor

02/14/2011 2:53 PM

Not really both do the same job.

Some baring gear use diesel engines particularly on rotary kilns where a loss of power could damage a kiln beyond repair. I've had a kiln drive motor fail in heavy rain, the diesel donkey engine wouldn't start, the kiln was bent 10" out of true. Most of the refractory lining fell out!

__________________
Pessimists are rarely disappointed.
Reply
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Ketchikan, AK, USA
Posts: 15841
Good Answers: 621
#3
In reply to #2

Re: Barring Gear Motor and Turning Gear Motor

02/14/2011 3:12 PM

Gives a whole new meaning to "That's the way the cookie crumbles"!

__________________
In vino veritas; in cervisia carmen; in aqua E. coli.
Reply
Guru
Engineering Fields - Electrical Engineering - New Member United Kingdom - Member - New Member Engineering Fields - Electromechanical Engineering - New Member

Join Date: Aug 2010
Location: Under the Major Oak
Posts: 3629
Good Answers: 143
#4
In reply to #3

Re: Barring Gear Motor and Turning Gear Motor

02/14/2011 3:28 PM

Crumble? It went with an almighty bang!

We straightened out the kiln by putting a low flame in it and slowly turning it on the donkey.

__________________
Pessimists are rarely disappointed.
Reply
Guru

Join Date: Dec 2010
Posts: 795
Good Answers: 56
#5
In reply to #2

Re: Barring Gear Motor and Turning Gear Motor

02/15/2011 1:52 PM

Hello TonyS,

Good to learn about the non-electric applications. What were you cooking in that kiln?

Reply
Guru
Engineering Fields - Electrical Engineering - New Member United Kingdom - Member - New Member Engineering Fields - Electromechanical Engineering - New Member

Join Date: Aug 2010
Location: Under the Major Oak
Posts: 3629
Good Answers: 143
#6
In reply to #5

Re: Barring Gear Motor and Turning Gear Motor

02/16/2011 8:41 AM

Lime ½ " to 2" for the stainless steel process.

__________________
Pessimists are rarely disappointed.
Reply
Reply to Forum Thread 6 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Copy to Clipboard

Users who posted comments:

67model (2); TonyS (3); Tornado (1)

Previous in Forum: AC Line Voltage Turned On By Low Battery Monitoring   Next in Forum: Purpose of Tertiary Coil/Capacitor in Battery Charger

Advertisement