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Shell and Tube Heat Exchanger _ Dismantle and Overhaul _ RoamerRealm

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Kind: captions
Language: en

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Hello guys, how are you? Gorgeous! It has been some time since I posted a video online because I was sailing outside
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As usual there was no internet on the ship.
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You are now back and today's videos are about heat exchanger / cooler
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On board the ship we will go through inspection, cleaning and
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"What to check" during the inspection.
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so let's go!
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Therefore, we have two sets of vacuum pump coolers on board.
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These are the two pump motors paired with the pump and next to them the coolers.
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Depending on the design, only one cooler is sufficient to keep the system running.
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The second cooler is more ready in case the first one malfunctions
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Or it should be opened for cleaning or any other maintenance.
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The vacuum pump has an internal waterproofing sealant also known as the liquid wick arrangement arrangement.
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This combined with an eccentric shaft along with an odd number of working pistons
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Enable a vacuum pump to work as it should.
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This water head tank is where the vacuum pump gets its fresh water.
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The tank in turn has a hydrophore contact topping.
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There is also optical glass to check the actual water level in the head tank.
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Coming to coolers:
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These are shell and tube type with double pass.
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Although the vacuum system is not currently used and both refrigerants can actually be opened simultaneously,
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I still prefer to do this job one chiller at a time.
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To insulate coolers
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The butterfly inlet and outlet valves are closed and the content is depleted via the equipped drain valve.
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Once drained, the end caps were removed. Before starting work on any system,
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We must make sure it is insulated, decompressing and draining the contents
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The working fluid in the pump cooler is sea water regardless of the type of filter and
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Anti-fouling systems on your ship, some pollution will definitely find its way into the chillers.
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This actually doesn't look so bad because as you can see, most of the tubes are still visible.
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Now, as I already mentioned, the working liquid is sea water,
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Therefore, to protect the material from corrosion, we have some carcass anode prepared for the body.
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Besides the general cleaning carried out, it is extremely important to check
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For the status of this contract, and depending on experience, you will know when to replace it.
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Failure to do so in a timely and routine manner will lead to corrosion of these tubes and even the shell
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Then it's a much bigger job to fix that. You also see anodes in different sizes.
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It is the cause of the site where it was installed
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The smallest of these two pockets are two
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This is what it looks like when installing and using it.
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The bigger one is from here and next to him what he looks like when he's in the process.
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It is important to remember that all fillings and connections must be renewed
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So to avoid the so-called "dual function" I mean later on, do the same again because now
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Gasket that has not been replaced leaks. In some cases, like this one,
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Seawater tube has an internal rubber coating to prevent it from corrosion.
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Check the condition only when it is peeling and you can apply some glue,
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I mean, the type available in freshwater generators, stick to the rubber back.
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Do not try to remove or pull this inner layer to
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Then you cannot return it and most likely you will have to fully replenish the tube.
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Also, do not use any type of glue for
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A wrong type of glue will make the rubber solid and brittle and will stop over time.
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Now, how to clean these tubes?
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Well, the instruction manual will tell you about some special long bristled brushes on the head
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But trust me, it takes a lot of time and there are easier ways!
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What is going on here is that we cut a section of copper back up tube
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Suitable diameter depends on the diameter of the cooling tube and
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Make it in a long nozzle. You can either use compressed air or water from the water system to
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Blow on these tubes and this is how they become clean.
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I prefer not to make the area too messy for the cleaning part that will come later,
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So, if possible, I mean
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Of course, if the size of the cold allows this, try placing a large trash bag or cap
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The other side while I was blowing air from the front end
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Because you use air, not water, the amount of waste that you will produce will be equal
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Less, I mean, there isn't much dirty water in the garbage bag
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This is a routine job. But sometimes if a tube is found to be clogged then
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One can also use copper, iron, or even a steel bar of suitable diameter and stop paying.
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Although I say this technique is more suitable for oversized coolers or heat exchangers
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Which will have a much larger tube diameter.
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Once the air blow is complete, have a quick look at the condition. If satisfied,
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Cooler components can be repackaged in reverse order as they are assembled * dis
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Well guys, that was the video - give me some
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Thumbs up or comment based on your opinion of the video.
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If you haven't already, please think about the subscription that motivates me the most.
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I will see you in the next one! thanks for watching!

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