6 ton gas fired industrial boiler
How to prevent corrosion of the gas 6 ton fired industrial boiler gas boiler it if the temperature is too high, some of the components of the boiler working long hours in the intense heat of the environment at work, the situation will cause boiler corrosion occurs. So, we are in the process of work what to do to reduce the corrosion of it? Here to tell you about some of the methods of preventing corrosion of boiler gas. Reason and approach demands on internal corrosion of the gas boiler must be in accordance with the methods and principles of conduct, you can now use a more extensive domestic and international gas boiler corrosion detection approach is magnetic flux leakage and ultrasonic detection. Ultrasonic Ultrasonic detection is used to measure the wall thickness after etching using the principle of ultrasonic pulse reflection. The basic principle of magnetic flux leakage method leakage flux detection method is based on the high-permeability properties of the ferromagnetic materials, magnetic permeability of the gas boiler corrosion disadvantage is much less than the permeability of the furnace, the applied gas boiler is magnetized in a magnetic field effect, when the furnace is no disadvantage, most of the magnetic lines of force through the pipe. Uniform distribution of lines of magnetic force at the moment; when the internal elbow has the disadvantage that the onset of meander lines of magnetic force, and a part of magnetic lines of force from leaking out of the outer steel pipe. Detecting the escaping magnetic flux leakage outer elbow, it can be determined whether the shortcomings exist. When the probe detects a straight guide hot oil furnace inner wall emit ultrasound pulse, to receive from the probe first reflected pulse within the outer wall, and will receive the ultrasound probe, this pulse and the pulse reflected from the outer wall of the outer appearance of the reflected pulse trip distance between the reflecting wall thickness. Gas-fired boiler in accordance with the practices and conditions set forth in the demand for the detection of practice, in accordance with the detection of ultrasonic inspection method can be distinguished way. High temperature components such as a gas boiler front panel, convection superheater and reheater temperature is the primary structural member and the like inside the boiler, a very long time to work in the harsh environment of use of the medium flame, smoke, ash, etc., and therefore the working process changes occurred in the organization and function of a range of materials, these changes hit the gas boiler creep, fatigue, corrosion, erosion and other messy aging and failure mechanisms. These high temperatures Microstructure component material will follow the extension of working time deteriorated creep damage occurs, such as loose pearlite, spheroidized carbides, grain boundary and growth mobilization, holes creep, intergranular cracking occurs .
1, the safety valve should be mounted vertically in a high position in the pot business, set box.
2, between the safety valve and the drum or header, not equipped with access to the steam outlet pipe and the valve.
3, the lever-type safety valve should prevent movement of the self-apparatus and the weight limit leverage deviant guide tube, a spring safety valve should lift and handle means for preventing movement of the adjustment screw is screwed lightly.
4, the rated steam pressure less than or equal to 3.82MPa gas steam boiler safety valve throat diameter of not less than 25mm; power greater than the rated steam pressure 3.82MPa boiler safety valve throat diameter not less than 20mm.
5, the safety valve and coal-fired steam boiler tubes, the cross-sectional area not less than the cross-sectional area of the valve inlet. If several valves installed together with a short tube directly connected to the drum, the cross-sectional area of the passage should not step short tube to 1.25 times the area of all the exhaust valve.
6, the safety valve should normally be installed exhaust pipe, exhaust pipe should be through a safe place, and there is sufficient cross-sectional area to ensure the smooth flow of exhaust.
7, the safety valve exhaust pipe at the bottom should have received a place of safety posturing of drainage pipe, the exhaust pipe and drainage pipe not allow the installation of the valve.
8, rated evaporation to 0.5t h coal-fired steam boiler /, at least two safety valves installed; Rated evaporation 0.5t h less than or equal to electric boiler /, mounted on at least a safety valve.
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1. oil and gas steam 6 ton fired industrial boiler system
A complete gas boiler system mainly includes the boiler body, burner, control system and other auxiliary structures