How can the finned tube be maintained for a longer time?
Many users have put forward the following points for attention in the process of using finned tube: how to maintain the finned tube for a longer life due to careless maintenance of some finned tubes, which leads to short service life. Murphy experts will be here to share some useful tips for readers.
The finned tube is made of high frequency welding technology and scaly fins, so it is not allowed to collide and squeeze during installation and use, which will easily deform and even affect the heat dissipation effect.
Because of the spiral distribution of finned tube scales, there will be some sediment and water rust layer in long-term use. We need to clean them in time.
Check whether the joint of fin tube is loose and the foot pad falls off.
Where the fin tube is exposed to the outside, it shall be kept dry as far as possible and not too close to the ground to avoid the corrosion of the fin tube caused by the irrigation in the greenhouse.
Through the maintenance of finned tube, the service life of finned tube will be greatly increased. The long-term use of any item can not be separated from the care and maintenance, fin tube is no exception, so what are the specific aspects of fin tube maintenance? Let's take a look at the introduction given by the Murphy experts.
Regularly check whether the cleaning of each finned tube is perfect or not, and whether there are deposits, coking, rust layer and other scaling adhesion, and clean it immediately. At the same time, it is also necessary to check whether the adhesion between each fin tube and the rubber washer is tight, and whether the rubber washer itself is in good condition, so as to avoid leakage caused by rubber washer degumming and damage.
The plate heat exchanger should be lubricated with lubricating grease when pressing nuts and upper and lower guide rods.
Each instrument shall be regulated by a specially assigned person and operated and maintained in strict accordance with the operating procedures.
When the rubber gasket needs to be replaced or the degummed part needs to be repaired, the finned tube shall be removed and placed on the table, and the old gasket shall be removed, or the glue traces in the groove of the finned tube shall be wiped out with fine sandpaper at the degumming position, and then the oil traces in the groove shall be wiped out with carbon tetrachloride or trichloroethylene, and then the back of the new rubber gasket shall be wiped out with fine sandpaper, similarly with carbon tetrachloride or trichloroethylene The vinyl solvent wiped out the oil. Then, apply a thin layer of glue on the back of the groove and rubber washer, and let it dry a little bit, so as not to stick fingers, but it still sticks. That is to say, the rubber washer is embedded in the groove, the four sides are flattened, a layer of talcum powder is applied, and then the finned tube is installed on the equipment rack and clamped gently. According to the glue specification, it can be put into operation after a long period of time.
Pay attention to the scale position of the last time when pressing the finned tube again. Do not over press the rubber gasket, so as to reduce the service life of the gasket.
When replacing the rubber gasket of the finned tube, it is necessary to replace all the segments so as to avoid the uneven clearance between the fins and affect the heat transfer effect.
Murphy experts said: generally, when the operation starts to use clean water for circulation, there may be slight leakage. When the temperature rises to the sterilization temperature, the leakage will disappear by itself. If the leakage does not stop, the finned tube must be compressed a little more. If it is still ineffective, it is necessary to open and check the rubber gasket. It is also possible that the finned tubes are arranged according to the number sequence on the fins, which should be corrected.
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