Dry gas seals are a type of mechanical seal used in various industries, including oil and gas, chemical, and petrochemical industries.
These dry gas mechanical seals are designed to prevent the leakage of gas between the rotating and stationary parts of a machine, such as a compressor or pump.
The dry gas seal working principle is based on the concept of a mating pair of seal faces that create a thin film of gas between them. The seal faces are made of hard-wearing materials such as carbon and ceramics, and their geometry is designed to create a narrow gap between them. When the equipment is running, the process gas enters this gap and creates a hydrodynamic film, which acts as a lubricant between the seal faces.
The hydrodynamic film prevents the seal faces from coming into direct contact with each other which could cause wear and tear. This ensures that the seal operates without any friction, reducing the amount of heat generated during operation and improving efficiency.
Dry gas seals offer several advantages over traditional liquid-lubricated seals, including improved reliability, reduced maintenance requirements, and enhanced safety.