Actually had a fire(ish) in a water pump in Al Jebail , Saudi 198?. The friction and cavitation burnt the convoluted flexible hose. A lot bigger pump though (6.6KV). One of Weir's Pumps. Weird seeing a seawater pump hose smoking.yeah each joint will cause a dry point at the joints of the pipes and also a collection area for it
it should have been round so nothing sticks to it
also it will be a git to clean out
also it would have been better keeping the speed of flow not expanding it to a larger pipe
the one you have is causing restrictions with flow therefore becomes hot
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Errr . .. no. In a pumped system you got to a bigger pipe as soon as possible to minimise frictional loses, especially in with high power pumps.also it would have been better keeping the speed of flow not expanding it to a larger pipe
The pump you are using to test it with must be a decent size too, and that will be putting an awful lot of energy into the system that's nicely warming up the (recirculating I assume?) water.I don't know about hard or dried bits - it's all water. Getting warmer the longer we test though.
It's a hydro turbine - only a piddly 90kW, but the generator has been reused from a simple asynchronous generator (3 phase motor), with a new shaft pressed into the rotor, end casing ring added to take the shaft seal and guide vane positioner:-
45 to 35 head, with 6m discharge head to push against. But it obviously varies with flow. The turbine will be running into an inverter, mains connected, so we can try for bep at various flows. Shutdown and startup strategy will be interesting, seeing as we will be working within the confines of water works flows and surge pressures in the main.Just curious, what input head pressure are you working with? It takes a tremendous amount of pressure to get any useful work out of water, relatively speaking.
I do have numerous pics of the guide vanes, I'll dig one out. The vanes do the flow control, all linked and worling together.Do you have a picture of the guide vanes? Those linkages look pretty cool, why do they need to move though? I'd have thought it would be more "set and forget".
Remember it's water, you can't speed up the flow without reducing the pipe size like you can with air.
Simeone asked what is the application - its from a reservoir via a tunnel dug by hand by some navvies, then down a set of pipes from a balancing tank. The outlet goes up into the floculation tank of the water works. Its like shagging in a straightjacket, flow wise.I do have numerous pics of the guide vanes, I'll dig one out. The vanes do the flow control, all linked and worling together.
I had to google that, then google the words in the description.... Entered a rabbit hole of stuff I don't need to know.floculation
Looks to be very nicely made. Interesting project to work on. What is the water source that it will be installed on (dam, river etc.)?
Depending on where you live, your water supply will have been de-coloured and filtered by this process.I had to google that, then google the words in the description.... Entered a rabbit hole of stuff I don't need to know.
Thanks for sharing, could you please post installed/working pics.
Now thats my kind of description, of fluid dynamics.Simeone asked what is the application - its from a reservoir via a tunnel dug by hand by some navvies, then down a set of pipes from a balancing tank. The outlet goes up into the floculation tank of the water works. Its like shagging in a straightjacket, flow wise.
Fing big borer in the background!Couple of pics of the inside bit that spins around as the water flows through it. And to answer @addjunkie s question, the guide vanes are indeed adjusted to allow more or less water through as it runs. It comes in at the outside of the spinny thing (called a runner, not an impeller), out the middle.
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Couple of pics of the inside bit that spins around as the water flows through it. And to answer @addjunkie s question, the guide vanes are indeed adjusted to allow more or less water through as it runs. It comes in at the outside of the spinny thing (called a runner, not an impeller), out the middle.
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Office boy boots!!Those aren’t working boots? Lol
Looks like new boots day! Not mine.Those aren’t working boots? Lol
I was only yanking your chain my friend.Looks like new boots day! Not mine.
The borer is what they used to bore the centre out of the turbine once all the stainless rings had been welded in. The runner is a one off test piece in aloomium, the actual ones will be stainless steel two piece with stainless internal guide vanes - something like 22 piece, plus bolts. With any luck I can polish it up and hang it on a wall somewhere.