Spark Plug Shell

A spark plug shell for a gas turbine is the outer casing or housing that encases the internal components of the spark plug. It plays a crucial role in protecting the electrode and insulator while ensuring proper mounting and electrical insulation.

Key Features of a Gas Turbine Spark Plug Shell:

1. High-Temperature Resistance – Made from heat-resistant alloys like Inconel, stainless steel, or other nickel-based superalloys to withstand extreme combustion temperatures.

2. Corrosion Resistance – Designed to endure harsh operating environments, including exposure to fuel combustion gases and oxidation.

3. Durability and Strength – The shell must be robust enough to handle high-pressure environments without cracking or deforming.

4. Electrical Insulation Support – Works in conjunction with an insulator (often made from high-purity ceramics) to prevent electrical leakage and ensure efficient spark generation.

5. Precise Machining – Must have accurate threading and sealing surfaces to fit securely in the gas turbine combustion chamber.