Matching method between boiler steam pressure and steam manifold pressure
1, The concept and function of boiler steam pressure and steam manifold pressure
Boiler steam pressure refers to the pressure of the steam generated by the boiler, which is an important parameter that directly affects the efficiency of power generation. If the steam pressure is too low, it will cause the generator speed to be too low and the power generation efficiency to decrease; If the steam pressure is too high, it may cause the boiler to explode. Therefore, in order to maximize the efficiency of the boiler, it is necessary to match the appropriate cylinder pressure.
steam manifold pressure refers to the pressure generated inside the steam turbine after the steam discharged from the boiler is introduced into the turbine. The cylinder pressure not only affects the power generation efficiency, but also affects the lifespan of the steam turbine. If the cylinder pressure is too low, it will lead to insufficient turbine speed, decreased power generation efficiency, and also cause wear on turbine blades; Excessive cylinder pressure can cause overheating and oscillation of the steam turbine, reducing its lifespan.
2, Matching method between boiler steam pressure and steam manifold pressure
The matching of boiler steam pressure and steam manifold is an important adjustment of power generation parameters. Below, we will provide a detailed introduction to the matching method between boiler steam pressure and cylinder pressure.
1. Determine the boiler steam pressure
Firstly, it is necessary to determine the required steam pressure for the generator. In general, choose the highest steam pressure that the boiler can generate.
2. Determine the number of sub cylinders
Determine the number of sub cylinders and the load of each sub cylinder based on the actual situation of the boiler and the demand of the generator.
3. Determine the cylinder pressure
Based on the steam pressure of the boiler and the number of cylinders, the pressure of each cylinder can be determined. In general, the pressure of the first split cylinder is 60% -70% of the boiler steam pressure, and as the split cylinder increases, the pressure of the split cylinder gradually decreases.
4. Adjust the matching scheme
In actual operation, it is necessary to adjust the matching scheme based on the actual situation of the boiler and the load of the generator. In general, the optimal matching can be achieved by adjusting the cylinder pressure and load.
3, Conclusion
From the above introduction, we can see that the matching of boiler steam pressure and cylinder pressure has a significant impact on power generation efficiency and the service life of the steam turbine. In order to achieve the best matching effect, it is necessary to adjust the cylinder pressure and load while determining the boiler steam pressure and the number of cylinders to achieve the best matching. Only in this way can we improve power generation efficiency and also extend the lifespan of the steam turbine.
