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Back pressure steam turbines are a type of steam turbine used to generate electricity. They work on the principle of converting the thermal energy of steam into mechanical energy, which is then used to turn an electrical generator.
When steam enters the turbine through an inlet nozzle, it is directed towards the turbine blades. As the steam passes over the blades, it imparts a force that causes the turbine to rotate. The rotating motion is then transferred to an electrical generator, which produces electricity.
But unlike other types of steam turbines, back pressure steam turbines are designed to operate at a constant pressure. This means that the steam that exits the turbine must have the same pressure as the steam that enters it. To achieve this, back pressure steam turbines are equipped with various components, each of which plays a crucial role in maintaining the pressure of the system.
One of the most significant components of a back pressure steam turbine is the governor. The governor is responsible for controlling the speed of the turbine by regulating the amount of steam that enters the turbine. The governor also helps maintain the constant pressure of the system by adjusting the steam inlet valve.
The steam inlet valve is another crucial component of a back pressure steam turbine. This valve regulates the amount of steam that enters the turbine, which affects the pressure and speed of the turbine. The steam inlet valve is operated by the governor, which adjusts it to maintain a constant pressure.
The steam chest is a chamber that sits between the turbine blades and the steam inlet valve. It acts as a buffer, allowing the steam to enter the turbine at a constant pressure and temperature. The steam chest also helps prevent fluctuations in pressure and temperature that could damage the turbine.
Finally, the condenser is responsible for cooling the steam after it exits the turbine. Cooling the steam increases its density, which helps maintain the pressure of the system. The condenser also removes excess heat from the system, which helps prevent damage to the turbine.
In summary, back pressure steam turbines work by converting the thermal energy of steam into mechanical energy, and they require several components to maintain a constant pressure. The governor, steam inlet valve, steam chest, and condenser are all crucial components of a back pressure steam turbine.
Негізгі бет How Back-pressure Steam turbine works and significance of its components | Electrical & Automation
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