What is the purpose of seal oil system?

The purpose of a seal oil system, particularly in a gas turbine or similar machinery, is to provide a barrier between the process gas and the atmosphere. Here are the steps explaining its purpose:

1. Prevent Leakage: The primary purpose of the seal oil system is to prevent the leakage of process gas to the atmosphere. This is particularly important in machinery like gas turbines where the process gas could be harmful if released.

2. Lubrication: The seal oil system also provides lubrication to the shaft seals. This reduces friction and wear, prolonging the life of the seals.

3. Cooling Effect: The seal oil system helps in cooling the seals and the shaft area. This is important as it prevents overheating which could lead to equipment failure.

4. Maintaining Pressure Balance: The seal oil system helps in maintaining a pressure balance between the process gas side and the atmosphere side. This is done by keeping the seal oil pressure slightly higher than the process gas pressure.

5. Protection Against Contaminants: The seal oil system also protects the machinery from contaminants. It does this by creating a barrier that prevents contaminants from entering the machinery.

In summary, the seal oil system plays a crucial role in ensuring the safe and efficient operation of machinery like gas turbines.