Removable Tube Sheet Heat Exchanger
Tube removal is a procedure that involves cutting tubes, pulling elsewhere tubes and tube stubs, and still knocking tubes out of the vessel. You be able to look to Elliott for all your tube removal needs ranging from tube cutters to tube tuggers to pneumatic hammers. The tube removal development includes several process steps that must be performed with critical sequencing and tolerances. The initial step of our process is the Tungsten Inert Gas (TIG) shrinking of the tube to-tube sheet expansion joints (where applicable), which is performed with our standard plug removal TIG system. For hard rolled and tubes the shrinking process is necessary to relieve the radial stress between the tube and tube sheet. The TIG process is carefully monitored for power and travel so that only designated areas in the tube are shrunk. For some tubes with minimal tube sheet contact, shrinking is not required.
Tube Removers-One or a combination of the three below methods is used to remove a tube from a boiler or chiller vessel
Tube Cutters - Tube Cutters are used to internally cut from the inside to the outside of the tube behind the tube sheet on one end. This lessens the force required to pull a tube. To eliminate tube cutting chips in the vessel, tubes should be scored and not totally cut through. The tube cutter needs to have sufficient reach to cut behind the tube sheet. Proper lubrication and cutting speed will increase cutting blade life.