Steam Turbine

Steam turbine consists of 4 basic parts:-

 1️⃣ Rotor, which carries the blades or buckets

 2️⃣ Stator, consisting of cylinder and casing, which are often combined and within which the rotor turns

3️⃣ Nozzles or flow passages for the steam, which are generally fixed to the inside of the cylinder

4️⃣ Frame or base for supporting the stator and rotor

There’re 4 Directions of the Steam inside ST:-

1️⃣ Axial Flow

🗜 It signifies steam flow substantially parallel to the axis of rotation, among blades that are set radially. This is the only arrangement used in medium and large turbines and is most commonly used also in small turbines.

2️⃣ Radial Flow

⌛️It’s obtained when the steam enters at or near the shaft and flows substantially radially outward among blades, which are placed parallel to the axis of rotation.

3️⃣ Tangential (Helical) Flow

🔋Tangential flow is the term applied when the steam enters through a nozzle placed approximately tangent to the periphery and directed into semicircular buckets milled obliquely into the edge of the wheel.

4️⃣ Mixed Flow

🚏Mixed flow is applied to the flow when it enters in the radial direction and leaves in the axial direction. These types of radial inflow turbines have been widely used with gasses and, in some cases, with steam.