Tube disassembly technology

Hydraulic tearing of tubes from holes in the tube sheet

Regardless of the method used to connect tubes with the tube sheet, the basic action that must be taken is to tear the tube out.

This task is always performed with a special jaw set in the tube hole, which is controlled and moved with a 6-32 ton multi-piston hydraulic actuator.

By using this technique, one can replace the tubes in a tube sheet numerous times without the risk of damage to the holes.

hydraulic tearing of tubes from holes in the tube sheet

Supplementary tasks:

Removal of plugs

Before the tubes are removed, it is necessary to remove all the plugs from the damaged tubes. They are disassembled or bored out.

removal of plugs

Removal of deposit from the tubes

All solid deposits (scale, corrosion) are removed from the openings using special drills. This is necessary to effectively use other special precision tools.

removal of deposit from the tubes

Cutting out of the weld

In exchangers where tubes were additionally welded to the tube sheet, the welds are removed with special cutterheads prior to tearing out the tubes.

cutting out of the weld

Cutting the tube past the tube sheet

When thin-wall tubes are being removed, they are cut past the tube sheet with a special tool. This is necessary when there are multiple partitions inside the exchanger.

cutting the tube past the tube sheet

Taking the torn out tube with a special actuator

In most cases, torn out tubes are removed from the bank manually. However, there are some exchangers where the outside surfaces of the tubes are covered with a solid deposit or with deformed tubes; in such cases it is necessary to use greater axial forces (a special actuator) when removing the tubes.

taking the torn out tube with a special actuator