Kelvion is a market leader in double tube safety technology, with more than 40 years‘ experience in supplying pioneering solutions that are at the forefront of industry standards. Our product line Shell & Tube Double Safety comprises standard, advanced and customized models, all designed and manufactured in close cooperation with our customers to meet the demands of their applications. We are continuously adapting our range to suit changing market requirements, as well as developing new products.
Double Tubes - Function and Design
Unlike a standard shell & tube heat exchanger with a single wall design, the tubes in double tube safety models have two walls, consisting of an inner and outer tube. They also have two tube sheets at each end. If a tube wall is damaged, the product flows through leakage channels arranged between the double tubes into a leakage collection space and triggers an alarm in the leak detection device. Because the second tube wall remains undamaged, the media are kept separate. This means that the plant operator can continue to run the heat exchanger until the next maintenance, avoiding costly unplanned downtimes, as well as contamination of your process and its equipment.
Safety First with Double Tubes
Kelvion double tube safety heat exchangers are available in different materials or their combinations, depending on application and media. The inner tube is normally plain, while the outer tube has a carved fin profile on the inside. This ensures the contact between the two tubes for optimum heat transfer. It also generates channels between the tubes for leaking media, which are then registered by the leak detector. Depending on the application and different media properties, the outer surface of the outer tube can be executed in a plain or low-fin design.
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