1.25MPa, 12.5kg, which can represent the steam pressure of industrial steam boilers, but everyone does not know much about the rated steam pressure. What does this parameter mean in industrial boilers? Let ’s take a look
1. Definition of rated steam pressure of industrial steam boiler
The rated steam pressure refers to the steam boiler pressure at the outlet of the main gas valve of the boiler superheater that must be guaranteed for long-term continuous operation of the steam boiler at the specified boiler thermal efficiency, steam temperature, feed water temperature and rated steam temperature, which is indicated on the boiler nameplate pressure. For boilers without superheaters, it is expressed by the saturated steam pressure at the outlet of the main gas valve.
Note:
1. The working pressure of the drum is greater than the rated pressure of the boiler. (If a boiler nameplate pressure is 6MPa, the working pressure of the drum is 6.8MPa)
2. If the working pressure is 1.25MPa, then the calculated pressure is 1.29MPa (GB / T9222-2208). The setting pressure of the safety valve is (low) 1.04X1.25 = 1.3MPa, (high) 1.06X1.25 = 1.325MPa
3. In fact, the rated pressure refers to the working pressure, which is marked on the boiler brand! The actual working pressure is generally not allowed to exceed the rated pressure!
Conversion of rated steam pressure units
As usual, the "kilogram" of pressure is actually "kilogram force / cm2" in the strict sense. You can convert it yourself. If the acceleration of gravity is about 10, 1 kgf / cm2 = 10 Newtons / cm2. = 10 × 10000 Newtons / square meter = 100,000 Pascals
Then 1MPa = 1000000Pa = 10 kgf / cm2, which is simply 10 kg, which is 1Kg / cm2 = 0.1Mpa
The above are the relevant details about the rated working pressure of industrial steam boilers that I have shared with you. I hope it will be useful to everyone.
