Authorized Personnel Only -S2E20- Do Generators Have Brakes?
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- čas přidán 28. 08. 2024
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Basically it works the same way that the brakes on your car work. Hydraulic pressure forces a piston out, pushing a brake pad against the surface causing friction and heat slowing it down, as bad as it sounds, i would absolutely love to see, on camera from far away, a massive generator over speed until catastrophic failure, it would be absolutely spectacular! And don't lie Chris, you know you would love to see it happen, just not yours 😂
Damn straight! That would be one hell of a show. If I ever get to decommission an old plant that's the kind of thing I would try to do. Of course there would be 20 cameras rolling and a lot of fun sensors for Vibration, Velocity, Temperature, and Decibells.
@@PhysicsduckChina would probably pay you good money to do it tomorrow...
The brakes will never stop the unit from spinning if the wicket gates don't close, they will simply smoke! The brakes are only used to stop a unit from spinning under normal shutdown. In fact if the unit does not stop quickly, the brakes must be released. And the mercury speed switch on the top of the unit is useless on a grid tied unit.
It is interesting to see the safety brakes need an oil pressure to stop the rotor. I would expect the opposite: the oil pressure to be needed to actually release the brakes (e.g. lifting the rotor by the thrust bearing from the fixed brake pads up into the free operating position, or so...), so it can not move out of control even when e.g. some seal or line bursts open...
but if it relies on no pressure it cannot actually exert meaningful pressure
@@minoupower554 They could be mounted on top with weights on them.
On a sidenote, i expected electric resistance breaking…
I reckon you could employ a system similar in nature to air brakes. Pressure is applied to keep the brakes down, the bottom of the piston could be spring loaded so that on a pressure loss, the brakes apply. But then you have to have all sorts of interlocks to ensure grid disconnection, wicket closure, a whole mess of other shit i know nothing about. I guess you could have stop logs ready to drop but that feels excessive and then spill ways which means you get Grady from Practical Engineering involved. Really quite excessive. But there ain't no kill like over kill...
Chris those are great videos and I must say, I love the name of the series, it's perfect!
Chris thank you for taking us through your plant it's always fascinating to see all the old gear still being kept on line. I really enjoyed your last video about the great scientific experience center you guys had it's something the world needs more of.
My pleasure! Thank you for watching! I'm sincerely glad you're enjoying these.
@@Physicsduck I binged on you videos when time permits you sir are a wise and very talented man do you have Instagram or Facebook? I especially liked your video on borrowing someone else's gear I'm glad I am not the only person who thinks give it back better than it started out. Best wishes to you and looking forward to seeing your new video I can't wait to see that beast running again 👍👍
Awwwwwwwwwwwww thank you sir. I'm glad you're enjoying the channel. Yes, I have a Facebook and Instagram, as well as a LOT of other videos on other channels. Here's the beginning of the rabbit hole, it goes deeper than you imagine. Good luck, and thanks for watching!
Considering the insane amounts of energy involved it's kinda surprising how few dam disasters happen
If you can read this, you have voided your warranty.. Love it.. Just concerned that the disclaimer does not cover nearby super novas. My neighbor still drive a Chevy Nova, and I worry about his insurance. Does this mean he is not covered? (for those who are missing my logic, just read the disclaimer).
This was really cool to see, thanks for this rare look at something like this!
Glad you enjoyed it!
yeah! I was looking for this comment. That disclaimer was really inspirational. I've never seen anything like it.
I know for a fact that the power station close to where I grew up that was in operation until the 50's used a log to brake the rotor. It had 150 meters aka 213 psi feed pressure, and 2 meters diameter of hand riveted iron pipe about 2 kilometres long. It had two generators, and was constructed in 1910. The building has the black and white checker board pattern floor,- and has been restored.
It lacks the generators and hardware,- and there is only remains of the pipeline that did lead up to the dam.
1:34
HE SAID THE THING
Where I retired from I rebuild generator brakes cylinders very often .
Betcha the pads are a custom order for that beast. Thanks for the look!
they probably are.
You know.....those are quite likely the original set.
@@Physicsduck oh oh that means the evil asbestos lives here. close it back up quick, we didn't see that....
@@Physicsduck They probably have never been used other than in a test maybe. It's really only for a failure of the wicket gates, right?
Great videos man. Got me hooked. Can't explain my recent fascination with this stuff, and you're not helping lol
They won't stop a runaway generator. We have the same type set up on our Allis Chalmers. The brakes operate on air and can be used to jack during maintenance with a hydraulic hand pump. The brakes are to bring a unit to a complete stop in a reasonable time so the unit doesn't creep / coast which is bad for the bearings.
Really interesting video! This might be a super dumb question, but can't you just short the generator? I would assume that would massively increase the load and bring it almost to a complete stop in almost no time
That's literally short circuit.
Its called a caliper sir! Lol
See! I thought it was funny, YOU thought it was funny.....
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Any chance of getting the outro disclaimer in text form?
It........it _is_ in text form. But here's a more slow speed version for you. Will this work? czcams.com/video/f2A2QWMoYj4/video.html
are these brakes the source of the oil leak that caused all the gunk to build up on the stator?
oh my god, that disclaimer. XD
I was looking to see if anyone else had read the whole thing, lord thats a mess.
How is the hydraulic pump for that driven?
The disclaimer st the end has me dyin
There's a whole video of just the disclaimer at a slow speed. :)
"Brakes" implies plural. I only see one. That's a "Brake". Still nifty all the same. You ever had to change the brake pad?
Wonder if they have to bleed the lines?
Hey Chris! can you do a video on the PLC industrial controls for the plant?
When I replace them, yes. That will be in the next season.
Is that a wicket gate on the snare Reverb?
I gate my snares AND my toms.
@@Physicsduck absolutely!
Who was the company that made the generator? EM. Electro Motive?
Lol last min is all disclaimer, scrolled through it to see if there was anything else like they do in movies but nope. Just disclaimer lol 😂😂🤷🏻♂️
have u read that disclaimer though? It's got plenty of hidden gems lmao
I assume that there must be more than one brake pad to avoid asymmetric pressure.
There's 4, one on each corner. :)
Breaks!
Brakes!
@@Anvilshock Yes, brakes, so the generator doesn't break.
two minutes of content, seven minutes of outro...
3 and a half, and it's a great outtro. You tracking time like that is why your girl keeps sending me those pics. Be nice, I taught her that thing you like.