Fin heating tube maintenance

Generally, when clean water is used for circulation at the beginning of operation, there may be slight leakage. When the temperature rises to the required temperature, the leakage will disappear by itself. If the leakage still does not stop, the fin tubes must be tightened a little more. If it still does not work, it is necessary to open and check the condition of the rubber gasket. It is also possible that the fin tubes are not arranged in the order of the numbers on the sheet, which should be corrected.

1. Regularly check whether the cleaning of each fin tube is perfect, whether there are sediments, coking, water rust layers and other scales attached, and clean them immediately. At the same time, it is also necessary to check whether the adhesion between each fin tube and the rubber gasket is tight, and whether the rubber gasket itself is intact, so as to avoid leakage caused by degumming and damage of the rubber gasket.

2. The compression nut and the upper and lower guide rods of the plate heat exchanger should be lubricated with grease frequently.

3. Each instrument adjustment should be responsible for the person in charge, and the operating procedures should be strictly followed for operation and maintenance.

4. When the rubber gasket needs to be replaced or the debonded part needs to be repaired, the fin tube needs to be removed and placed on the table, the old gasket needs to be removed, or the glue traces in the groove of the fin tube need to be wiped off with fine sandpaper at the debonded part, and then the oil traces in the groove need to be wiped off with solvents such as carbon tetrachloride or trichloroethylene, and then the back of the new rubber gasket needs to be rubbed with fine sandpaper, and the oil traces need to be wiped off with carbon tetrachloride or trichloroethylene solvents. Then a thin layer of glue is applied to the groove and the back of the rubber gasket, and it is slightly dry, so that it does not stick to the fingers but is still sticky. Then the rubber gasket is embedded in the groove, flattened around, and a layer of talcum powder is applied. Then the fin tube is installed on the equipment frame and gently clamped. It can be put into production and used after a period of time according to the glue manual.

5. Each time the fin tube is re-tightened, pay attention to the scale position when it was tightened last time, and do not over-tighten the rubber gasket, which will reduce the service life of the gasket.

6. When replacing the rubber gasket of the fin tube, the entire section must be replaced to avoid uneven gaps between the pieces, which will affect the heat transfer effect.