Boiler explosion mainly refers to steam drum explosion. Since the steam drum explosion is completed in the time of the smashing, the medium does not have time to stop the heat exchange. Therefore, the maximum energy released by the pot water and the saturated steam after the steam drum explosion is equal to the difference between the internal energy before and after the explosion of the pot water and the saturated steam.
Under various pressures, the explosion energy per unit volume of saturated water and saturated steam is as shown in the sum. The explosive energy per unit volume of explosive energy per unit volume can be seen from the table, the explosive energy increases with the increase of pressure. According to the unit volume, the explosive energy of saturated water is larger than that of saturated steam, but as the pressure increases, the difference between the two decreases.
When the pressure is critical, there is no difference between the two. If the steam volume of the steam drum is 10m3, the explosion energy can reach up to 3x108kJ when the pressure is 0.9MPa, and the explosion energy can be as high as 2.1x109kJ when the pressure is 11MPa. The explosive energy of the explosive is 8.5x105kJ/kg. When the boiler with a volume of 10 m3 of steam has an explosion.
Its destructive ability is equivalent to a boiler with a pressure of 0.9 MPa and 350 kg of TNT. The boiler with a pressure of 11 MPa is equivalent to the 2.47 tTNT explosive. It can be seen that when the boiler explodes, its destruction ability is very large, and the result is catastrophic. Therefore, from the design, manufacture, installation and application of the boiler, it is absolutely necessary to ensure that the steam drum does not explode.
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