Expansion jointing of thick tube sheets in heat exchangers
Thread Content
A heat exchanger with a diameter of 2000 mm and a tube sheet thickness of 100 mm, made of material Q345R; the heat exchange tubes are copper-nickel tubes with a diameter of 19 mm, and a pure expansion jointing method is used. Can expansion jointing ensure no leakage?
Please specify the operating temperature and pressure; expansion jointing certainly has a range of applicable conditions, which are related to the tools used as well as the skill level of the operator
Please refer to the relevant content in clause 6.6.1 of GB/T 151-2014 \"Heat Exchangers\".
Hydraulic expansion is used. The hydraulic expansion force is uniform, meeting the requirements of LZ.
Considering the operating conditions, it should be a strong expansion process; the material is not suitable for welding
The original poster doesn’t seem to have mentioned how great the pressure is, but if the design works, then the manufacturing process will definitely be successful
Slotted hydraulic expansion is used, followed by additional expansion until no leakage occurs during the water pressure test.
You can create a MOCK-UP to find the appropriate process parameters. This ensures better quality
With a mock-up, only the expansion joint parameters can be determined, but it still differs significantly from the actual product; it is not possible to simulate the container