Fire Tube Boilers Also referred to as smoke tube boilers, shell boilers, package boilers Multiple gas paths - 2, 3 and 4 pass Internal furnace or fire box as the 1st pass Dry back or wet back design Single fuel or dual fuel design Little or no steam separation equipment
Digital radiographic systems detect boiler tube cracks
Doppler ultrasonic crack detection Cobra scanner with Phased array transducer for boiler tube inspection, US $ 4200 - 6200 / Piece, Guangdong, China, DOPPLER, waterproof transducer.Source from Guangzhou Doppler Electronic Technologies Incorporated Company on Alibaba.com.
Boiler Tube Leakage detection by Acoustic Instrument in Thermal Powe…
the ﬂue gases, these boilers are also called three-pass shell boilers. Industrial boiler systems can cope with much higher pressures than pressure cookers. These boilers are welded from thick steel plates that are up to 35 mm thick, making pressures of 30 bar and more possible.
Boiler tube leakage is the major reason of affecting the safe operation of the unit now, there are 3 methods of the "four tube" leakage detection: Traditional method, filtering method and
292 Chapter 14 Stack—an opening at the top of the boiler that is used to remove flue gas, p. 297. Steam drum—the top drum of a boiler where all of the generated steam is collected before entering the distribution system, p. 293. Steam trap—a device used to remove condensate or liquid from steam systems, p. 294. Superheated steam—steam that has been heated to a very high temperature so
Introduction:FGR means that the exhaust gas is recycled proportionately back into the furnace to reuse and lower the flame temperature as well as to improve efficiency. It is designed for customers who are in large demand for Heating supply. Water tube boiler is bigger and more complex than fire tube boiler.