Removable Tube Sheet Heat Exchangers Manufacturer INDIA
Tube removal a process that involves cutting tubes, pulling out tubes & tube stubs, & even knocking tubes out of the vessel. You can look to Elliott for all your tube removal needs ranging from tube cutters to tube tuggers to pneumatic hammers.The tube removal process includes several process steps that must be performed with critical sequencing & tolerances. The initial step of our process the Tungsten Inert Gas (TIG) shrinking of the tube to-tube sheet expansion joints (where applicable), which performed with our st&ard plug removal TIG system. Hard rolled & tubes the shrinking process necessary to relieve the radial stress between the tube & tube sheet. The TIG process carefully monitored for power & travel so that only designated areas in the tube are shrunk. Some tubes with minimal tube sheet contact, shrinking not required.
Tube Removers:-One or a combination of the three below methods 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. Th lessens the force required to pull a tube. To eliminate tube cutting chips in vessel, tubes should be scored & not totally cut through. The tube cutter needs to have sufficient reach to cut behind the tube sheet. Proper lubrication & cutting speed will increase cutting blade life.
Tube Pullers:- Used to break the seal & pull exp&ed tubes from a tube sheet. A spear or exp&ing collet inserted & engaged into the tube inner diameter. A ram / gun applies force to exert an extracting force on the tube. The power to pull the tube generated manually through an hydraulic pump. The hydraulic pump can be manually, electrically or pneumatically driven. The pulling force required will vary with the tube size & wall, the depth of the tube sheet & tube material.
Pneumatic Hammers:-Pneumatic Hammers are an alternative method to remove tube stubs from heat exchangers & boilers. Maintenance technicians use piloted knockout tools to avoid damage the tube sheet. The knockout tool inserted into the tube & the impact pneumatic hammer actuated to punch out the tube stub.
Tube Installation (Tube Exp&ers):- Tube Exp&ing the art of reducing a tube wall by compressing the outer diameter of the tube against a fixed container such as rolling tubes into tube sheets, drums, ferrules or flanges. Construction of heat exchangers, boilers, & surface condenser tubes mainly limited to copper, steel, stainless steel, & cast iron with exceptions such as the use of titanium in ultra high pressure vessel applications. To assure a proper tube joint, the tube wall must be reduced by a predetermined percentage dependent upon the material the tube constructed