What is normally used to compensate for...

Question 1 / 270705eccefa0bacbc34ba4d4711e

Question 1 of 270705eccefa0bacbc34ba4d4711e

What is normally used to compensate for thermal expansion and contraction of the main turbine casing?

Question 1 of 27070

What is normally used to compensate for thermal expansion and contraction of the main turbine casing?

🔍 Key Concepts

• Thermal expansion of turbine casings and how the casing is allowed to move as temperature changes • The difference between supports/mountings and bearings in a main turbine installation • How piping arrangements vs foundation arrangements handle movement due to heat

💭 Think About

• Which part of the turbine system is designed specifically so the casing can grow longer as it heats up without creating stress or distortion? • Think about which option would allow controlled movement in the structure holding the casing, rather than in the lube bearings or the steam pipes. • Which choice, if made too rigid, would cause the casing to bind or distort as it heats and cools?

✅ Before You Answer

• Identify which item directly supports the turbine casing on the foundation, and how it allows movement in one direction. • Consider whether bearings are mainly for supporting and aligning the shaft or for compensating for casing expansion. • Ask whether curved steam lines are primarily designed to protect the piping system or the turbine casing itself from expansion stresses.

Question 1 of 27070

What is normally used to compensate for thermal expansion and contraction of the main turbine casing?

Flexible I-beam supports

Rigid mountings

Curved steam lines

Babbitt lined bearings