Carbon Ring Nitrogen Seal Blower

Carbon ring nitrogen seals typically utilize a three-ring structure, symmetrically distributed around the shaft. These three rings are arranged sequentially and tightly hug the shaft's exterior. During operation, the shaft rubs against the carbon rings, causing gradual wear. However, external springs maintain a tight seal by tightening the rings, ensuring a continuous seal. Graphite is added to the carbon rings, providing excellent lubrication, effectively reducing friction and wear between the shaft and the carbon rings, ensuring stable operation of the sealing system.

Nitrogen Injection and Pressure Control

In the sealing system, a large amount of nitrogen is injected into the chamber through a specially designed pipe. The design features more carbon rings on the exterior than on the interior, typically two on the exterior and one on the interior. The injected nitrogen pressure is significantly higher than the internal pressure of the chamber. This significant pressure differential is crucial for achieving a seal. Once the nitrogen enters the chamber, pressure causes it to flow simultaneously toward both sides of the shaft, with some flowing toward the interior and some toward the exterior. Analysis of the Zero-Leakage Principle
As nitrogen flows inward, the two outer carbon rings act as a critical barrier. These rings create significant resistance, forcing the majority of the nitrogen (approximately 80%) to flow into the chamber, while only a small amount (approximately 20%) leaks outward. Because the pressure of the injected nitrogen is always higher than the pressure of the blower chamber, the inward-flowing nitrogen effectively suppresses the gas within the chamber, preventing it from leaking outward. Strictly speaking, this design achieves zero leakage of gas from the flow channel to the outside world. Leakage from within the chamber is undetectable to the outside world, thus ensuring the efficiency and reliability of the sealing system and providing strong support for the safe and stable operation of industrial production.