Key technological points of large heat exchanger units,Let's take a closer look together:
It is important to select the correct dosage. Too little medication will prevent the tube from expanding properly, while too much medication may cause the tube to burst.This results in large plastic deformation of the tube sheet and tube holes, and increases the difficulty of rework.
The gap between the pipe and the pipe hole should be properly controlled.If the gap is too small, the pipe and the tube sheet will only undergo elastic deformation, and the pipe will not expand tightly.Excessive gaps can cause excessive deformation of the pipe, resulting in cracks, leaks, or the pipe not expanding properly, a condition known as "loose expansion."
Grooves must be cut inside the tube sheet holes of large heat exchanger units.Because the degree of filling of the groove by explosive expansion is much better than that of mechanical rolling expansion, it is easier to generate stronger tensile strength.
The pressure resistance of explosion-prone joints increases as the surface roughness of the joint decreases.To enhance the fluidity of plastic deformation during explosive expansion, the surface roughness of the pipe and expansion joint should be minimized.
he same batch of detonators and the same fuse material must be used for the same explosion.To prevent the explosive charge from being carried out and damaging the tube due to different detonation times.
When detonating multiple holes simultaneously, a certain distance must be maintained. Generally, the distance between holes is about 1.5 times the pipe diameter, and the two ends of the pipe opening cannot be detonated at the same time.Safety protection measures must be in place at the detonation site, procedures must be established, there must be safety supervision, and someone must be in charge of command.
Well, the above is the editor's analysis of the precautions for debugging the fully automatic heat exchanger unit.I hope this helps you all.If you have any questions related to heating equipment in the future, you can leave a message to the editor in time.Please send an email to 9988xiaoshuai@gmail.com, we will reply you as soon as we see the email.
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