The so-called "four-tube" of a boiler refers to the boiler water wall, superheater, reheater, and economizer. To prevent the leakage of the four-tube of the boiler in the traditional sense means to prevent the leakage of metal pipes in the furnace at the above locations. The four tubes of the boiler cover the entire heating surface of the boiler. They internally bear the pressure of the working medium and the role of some chemical components, and the outside bears the environmental effects of high temperature, erosion, and wear. The harmony between water and fire is where the contradictions are concentrated, so it is easy to cause failure and leakage. OEM Carbon Steel Machining Products Manufacturer shares with you.
In recent years, the number of unplanned outages caused by boiler equipment accidents in China has accounted for 48.9% of the total number of unplanned outages of the unit, and the unplanned outages caused by the boiler four-pipe leakage accident accounted for 60.5% of the total number of boilers.
There are many leakage accidents of the four pipes, which not only poses a serious threat to the stable operation of the unit, affects the completion of power generation indicators and leads to a reduction in economic benefits, but also directly affects the normal dispatching of the power grid. Looking at the reasons for the failure of the four-tube leakage failure of large boilers across the country, it can be clearly found that efforts must be made from the entire process of design standards, design selection, manufacturing, installation, and commissioning to prevent the most effective accidents.
First, a wear-proof and explosion-proof inspection of boiler pressure parts
The anti-wear and explosion-proof work of boilers involves boiler, metal, chemistry, thermal engineering, welding, and other specialties. It is very complicated, even trivial and very professional systemic work. To do this work, we must give full play to the role of wear-proof and explosion-proof networks and systems. The inspection of the "four pipes" of the boiler shall be carried out by a special person. Each person shall have a clear inspection scope and sign the inspection results and shall bear corresponding responsibilities for the parts that can not be inspected due to the lack of responsibility. Taking such an inspection method has strengthened the sense of responsibility of inspectors. It is true that the anti-wear and anti-explosion inspection work is very tiring, tired and dirty, but the key to avoiding the leakage of the four tubes of the boiler is in the hands of each inspector. With a little more attention and a little more input, you may well have avoided an unplanned outage and made your own contribution to the economic benefits of the plant.
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