At present, with the wide application of heat exchanger in various industries, shell and tube heat exchanger accounts for half of the current heat exchanger, especially plays an extremely important role in energy. In order to make shell and tube work with higher efficiency, daily maintenance and maintenance become an essential part:

1. First of all, we need to install a filter device at the place where the fluid medium enters the shell and tube heat exchanger, which can effectively enhance the water quality and reduce the occurrence of scale, scaling and corrosion in the heat exchanger.

2. If the connection between the tube bundle and the tube sheet has cracks, leading to its failure, we need to re expand, weld, expand, weld and other methods for maintenance.

3. If it is damaged heat exchange tube, we should use plugging method for emergency remedy first, but in most cases, the number of blocked tubes should not exceed 10% of the total number of main pipes, so if the heat exchange tube is damaged too much, it should be replaced.

4. Check the heat exchanger and know that it is easy to scale. Then, formulate corresponding maintenance measures according to the different components and degrees of the dirt.

5. When the temperature of the working environment is less than 0 ℃, the medium and circulating water in the heat exchanger shall be cleaned and discharged from the outside of the equipment to avoid the occurrence of frost cracking pipeline.

6. The tube changer shall be chemically cleaned according to the time.