Special coating production line equipment for oil pipeline
1. Project description
1.1 Brief principle
a) Interior epoxy powder coating for petroleum pipeline : surface pre-treatment→ pre-heating, → epoxypowder coating →curing of after coating
b) Principle schem of epoxy powder coating
2.Equipment process
2.1The high efficient powder jet in preheating pipe wall ,it is feeding via the powder pump (Venturi throat tune)
under the action of compressed air spray gun . Then the power combine and melt in the pipe inner surface.
2.2 Powder fluidized bed including barrel, a gas chamber, a plate with micro hole, Venturi nozzle, the powder feeding tube etc..
2.3 Spraying system and spraying gun walking is driven by a dolly.
2.4 Spray gun for spraying powder centralizer in spraying process when spraying working.
2.5 Cooling water machine and spray gun cooling system is use for the powder environment temperature stability when operating in the process.
2.6 Both ends of the pipeline configuration powder recovery machine. Both ends of the bag type filter device as
powder recovery and environmental protection dust removing device.
2.7 The sprayed pipe feeding and rotating device: the pipe receiving and discharging system in charge for loading and unloading the heating pile, spraying pipe rotation speed is adjustable.
2.8 Control system is used to realize the coordination function .
2.9 Control panel with manual, automatic, emergency stop function, and with the relevant function indicator..
3.Parameter
coating thickness:4-12 mil(stepless adjustable)
Gun walking speed:0.5-32 m/min;
Cycle time:about 1.5 to 4 minutes per spraying;
Pipe size:2_3/8″,2-7/8″,3_1/2″,4″,4-1/2″,5″,5-1/2″,6″,6-1/2″(ID 47-300mm )
Pipe length:L=3~14.5m
