Blockage in tubular heat exchangers
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I’m seeking help from fellow experts: There’s a leak in the tubes of a tubular heat exchanger. I recall seeing in the maintenance procedures for 300,000-ton ammonia and urea production equipment of the Meihuo type that semi-hollow plugs could be used to seal these tubes, but I can’t remember the relevant parameters now. Does anyone among you know them? Please share them as soon as possible – it’s urgent! Thank you!
The tool used to block a pipe is called a TUBE PLUG; it has a certain taper and is wedged into the pipe.
This is a common method used in less important heat exchangers; its drawback is that it tends to cause stress on the surrounding tube sheets, thereby increasing the leakage rate in those areas.