Application of tandem gas film mechanical seal (2)-

Application of Tandem Gas Film Mechanical Seal (2)

　2018-11-09　　

Application of Tandem Gas Film Mechanical Seal (2):

Zero leakage of sealing medium, 286 mechanical seal

When the sealed medium is not allowed to leak into the environment, a self-monitoring gas supply system is indispensable. The sealing device is shown in Figure 4-23. In addition to being used to lubricate the secondary seal, the buffer gas can also send the leaked gas from the primary seal to the burner for combustion. There is a throttle valve between the burner discharge port and the buffer gas supply. On the one hand, it can reduce the consumption of buffer gas; on the other hand, when the main seal on the side of the sealed medium fails, it can reduce the pressure and pressure of the sealed medium. The volume of leakage into the atmosphere. The check valve installed in the gas supply system can prevent the sealed medium from entering the buffer gas pipeline.

Figure 4-23 Series gas film seal + gas supply system

During the sealing process, any leakage of toxic media can be forced into a closed system for storage or burned by a burner by the pressure of the buffer gas from the sealed chamber to avoid entering the atmosphere. In the gas supply system, it can be monitored by a pressure switch or a flow control unit. Relying on the pressure of nitrogen in the sealed chamber, the seal on the atmosphere side can be operated like a liquid film seal or a gas film seal. The safety throttle valve installed between the seals can limit the leakage of the medium.　　976.html,

Application of Tandem Gas Film Mechanical Seal (1) 　　 Application Examples of Tandem Gas Film Mechanical Seal