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Post by jonjel on Nov 25, 2015 11:46:29 GMT 1
I wonder if someone here can help.
I have a piece of equipment in the workshop and one of the cooling pipes is blocked. It is very old and has not been used in years.
To explain there is a small manifold block connected to 15mm pipe. The 15mm pipe is fine and cools another part of the system, but from the manifold block three copper tubes around 8mm OD are tightly wound several turns around a piece of the kit which is around 75mm OD, then go to another manifold and thence to drain. And those smaller pipes are blocked. It is impossible to mechanically clear out the pipes with wire or similar. The reason three pipes are fitted is because it would have been impossible to wind the 15mm pipe around that 75mm area of the kit.
We have tried soaking for a couple of days with standard kettle de-scaler and heated it, and we have tried a 10% solution of HCL, also for a couple of days and heated, to no avail, even with 100 psi of air pressure behind it.
I don't want to have to cut into the pies to clean them, but unless someone can suggest a chemical method that might work, I might have to but access is very difficult.
JJ
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Post by jean on Nov 25, 2015 15:04:00 GMT 1
I'm sure exco could help you, if only you could bring yourself to ask him.
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Post by jonjel on Nov 25, 2015 15:22:00 GMT 1
I'm sure exco could help you, if only you could bring yourself to ask him. Jean. I have tried to be polite to him and only lost it a few times, despite being called a racist, a member of UKIP and having been personally insulted on numerous occasions. I won't be asking him because I doubt that maths will solve the problem. Physics or chemistry might. You and I have fallen out on occasions but we have done so without either of us slinging personal insults at one another, which means it has never really been a problem. We have just disagreed in a fairly forceful manner. As for the pipes I would just add that I probably have considerably more practical experience in solving problems of this nature than he has, but this one is a bit of a pig.
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Post by jean on Nov 25, 2015 16:12:13 GMT 1
You and exco have both had your moments of personal insult, as I have observed. What does surprise me is that you don't seem to have noticed the personal insults on this forum. But I think this is what it's all about, really: ...I would just add that I probably have considerably more practical experience in solving problems of this nature than he has...
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Post by jonjel on Nov 25, 2015 16:22:33 GMT 1
You and exco have both had your moments of personal insult, as I have observed. What does surprise me is that you don't seem to have noticed the personal insults on this forum. Had they been directed at me I would have noticed them. And apart from when really riled I have not insulted him, or anyone else. It is not my way. His way seems to be just to goad. Especially if people don't have his particular political view.
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Post by jean on Nov 25, 2015 17:32:18 GMT 1
...Had they been directed at me I would have noticed them... Oh well, if that's all that matters to you! But perhaps, if you only notice insults directed at yourself, you shouldn't have been quite so confident in your more general assertion that on this board, posters ...obey the simple rules of decency and are not rude to one another...
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Post by jonjel on Nov 25, 2015 18:00:01 GMT 1
Jean, I am not quite sure what you want me to say. You have now quoted something I said on another board, totally out of context.
As I said, on that board, or if I didn't say it I implied it, if things change and get away from the endless wall to wall climate change debate which have been going on for months with continual repetition and I (speaking for myself) find mind numbingly boring then I might pop back in.
Look at the number of posts started by your friend and fellow Liverpudlian that have had zero response.
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Post by Progenitor A on Nov 25, 2015 18:26:57 GMT 1
Jonjel Ask Jean for some of her acid, dilute it with water 100:1, align the pipes vertically and pour in. After 24 hours give them a blast of compressed air Sounds problematical What sort of machine is it?
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Post by jonjel on Nov 25, 2015 20:39:29 GMT 1
Thanks pa. We have tried acid but simply can't get it to the place it is required and without stripping the whole damn thing down for a little bit stuffed
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Post by jean on Nov 25, 2015 23:53:45 GMT 1
Jean, I am not quite sure what you want me to say. You have now quoted something I said on another board... I'd just like you to recognise that this board is quite as dysfunctional as that one. (And hasn't got the huge advantage of aubrey's gentle yet incisive presence.)
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Post by Progenitor A on Nov 26, 2015 9:07:23 GMT 1
(And hasn't got the huge advantage of aubrey's gentle yet incisive presence.) By this she means the lazy bleating inadequate pornographer who once had a whole thread deleted because of his obscene nastiness
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Post by jean on Nov 26, 2015 10:21:52 GMT 1
QED, I think.
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Post by mrsonde on Nov 26, 2015 21:02:14 GMT 1
I wonder if someone here can help. I have a piece of equipment in the workshop and one of the cooling pipes is blocked. It is very old and has not been used in years. To explain there is a small manifold block connected to 15mm pipe. The 15mm pipe is fine and cools another part of the system, but from the manifold block three copper tubes around 8mm OD are tightly wound several turns around a piece of the kit which is around 75mm OD, then go to another manifold and thence to drain. And those smaller pipes are blocked. It is impossible to mechanically clear out the pipes with wire or similar. The reason three pipes are fitted is because it would have been impossible to wind the 15mm pipe around that 75mm area of the kit. We have tried soaking for a couple of days with standard kettle de-scaler and heated it, and we have tried a 10% solution of HCL, also for a couple of days and heated, to no avail, even with 100 psi of air pressure behind it. I don't want to have to cut into the pies to clean them, but unless someone can suggest a chemical method that might work, I might have to but access is very difficult. JJ Interesting, JJ. May I suggest the Picardi method? It's normally used for descaling industrial boilers but, chemically, the principles should still apply in this case. You need to apply a magnetic field to the pipe and then force water through it, rather than the usual technique of using still magnetised water, I think. I can't quite follow the dimensions of the design from your description: if you can do it electromagnetically that would be ideal. If not, try speaker magnets, arranged around the pipes, left for a few days, with water pressure continually applied. It's the water rather than the blockage that the field needs to be applied to.
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Post by jonjel on Nov 27, 2015 11:18:35 GMT 1
Now that is damned useful info Mr Sonde, and I think you. We are making very slow progress with acid, but will try your method if possible.
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Post by mrsonde on Nov 29, 2015 18:50:56 GMT 1
You're welcome JJ. Reading it back, I see I've misled you. The field needs to be applied to unpressurised water first - then apply the pressure.
As you know from our private discussions, I'm busily involved in the practical applications of this research. Effectively, I think (I've just been in Dortmund spending twenty grand on that piece of equipment.) This method should be equivalent to dosing your blockage with the most pure acid possible: that's how it works, as far as I can figure (i.e. you set up a stream of hydrogen ions at the surface of the pipe.) I should perhaps remark (I don't know how large this installation is), be aware that the resultant chemical reaction should produce methane and a certain amount of hydrogen: send your smokers outside.)
Incidentally - did you set up your account for crowd founding? I'm a man of my word: I have my £200 ready. Don't give up, my hero.
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