Shell and tube heat exchanger inspection and maintenance method

- Aug 21, 2018-

Shell and tube heat exchanger inspection and maintenance method

Any shell-and-tube heat exchanger will have different degrees of failures and problems after a long period of use. Therefore, it is very important for the shell-and-tube heat exchanger inspection and shell-and-tube heat exchanger maintenance methods. I believe many customers are I really want to know and understand that the following are some of the data compiled by VRcooler.

The inspection and repair methods of shell-and-tube heat exchangers are generally divided into three categories according to different degrees: minor repair, medium repair, overhaul

 

First, the repair of the shell-and-tube heat exchanger is minor:

 

1. Remove the caps and tube boxes at both ends of the shell-and-tube heat exchanger and clean the shell-and-tube heat exchanger;

2. Check whether there are any problems such as corrosion cracks in the corrugated sand holes at the ends of the shell-and-tube heat exchanger, and whether there are foreign objects in the inner and outer surface shells of the shell tube for cleaning and cleaning;

3. It is indispensable to test and test the tube bundle and the shell when there is a side leakage problem;

4. Do a good job of carefully checking the bolts, insulation and anti-corrosion work;

5. Partial thickness measurement of shell-and-tube heat exchangers is also a method of heat exchanger maintenance.

 

Second, the repair range of the shell-and-tube heat exchanger overhaul:

 

1. The medium repair includes all the above minor repairs;

2. To repair the deformation and bending of the heat transfer tube of the shell-and-tube heat exchanger, how to affect the degree of the tube, and to remove the tube bundle heat exchanger tube bundle for cleaning, finishing and cleaning;

3. Inspection and repair of the corrosion degree of the tie bolts, baffles and partitions;

4. Carefully check the sealing surfaces of the heat exchanger. There should be no scratches, pits and pitting on the surface of the heat exchanger.

 

Third, the shell and tube heat exchanger maintenance method overhaul method:

 

1. Continuation of methods including medium and small repairs;

2. Perform coloring inspection on the welding points of the tube sheet and the shell tube, and comprehensively check whether the heat exchanger is running normally;

In summary, the inspection and repair methods of the shell-and-tube heat exchanger and the shell-and-tube heat exchanger are processed according to the different degrees of damage, and the steps are sequentially tested by minor repair, medium repair, overhaul, etc. Heater maintenance is very helpful.